diff options
author | Thiago de Arruda <tpadilha84@gmail.com> | 2014-01-31 10:39:15 -0300 |
---|---|---|
committer | Thiago de Arruda <tpadilha84@gmail.com> | 2014-01-31 10:39:15 -0300 |
commit | 72cf89bce8e4230dbc161dc5606f48ef9884ba70 (patch) | |
tree | 3ee06dbd8c57e291a8713289670ae1cb51397d44 /src/misc1.c | |
download | rneovim-72cf89bce8e4230dbc161dc5606f48ef9884ba70.tar.gz rneovim-72cf89bce8e4230dbc161dc5606f48ef9884ba70.tar.bz2 rneovim-72cf89bce8e4230dbc161dc5606f48ef9884ba70.zip |
Import vim from changeset v5628:c9cad40b4181
- Cleanup source tree, leaving only files necessary for compilation/testing
- Process files through unifdef to remove tons of FEAT_* macros
- Process files through uncrustify to normalize source code formatting.
- Port the build system to cmake
Diffstat (limited to 'src/misc1.c')
-rw-r--r-- | src/misc1.c | 9097 |
1 files changed, 9097 insertions, 0 deletions
diff --git a/src/misc1.c b/src/misc1.c new file mode 100644 index 0000000000..92fc47189b --- /dev/null +++ b/src/misc1.c @@ -0,0 +1,9097 @@ +/* vi:set ts=8 sts=4 sw=4: + * + * VIM - Vi IMproved by Bram Moolenaar + * + * Do ":help uganda" in Vim to read copying and usage conditions. + * Do ":help credits" in Vim to see a list of people who contributed. + * See README.txt for an overview of the Vim source code. + */ + +/* + * misc1.c: functions that didn't seem to fit elsewhere + */ + +#include "vim.h" +#include "version.h" + +static char_u *vim_version_dir __ARGS((char_u *vimdir)); +static char_u *remove_tail __ARGS((char_u *p, char_u *pend, char_u *name)); +static void init_users __ARGS((void)); +static int copy_indent __ARGS((int size, char_u *src)); + +/* All user names (for ~user completion as done by shell). */ +static garray_T ga_users; + +/* + * Count the size (in window cells) of the indent in the current line. + */ +int get_indent() { + return get_indent_str(ml_get_curline(), (int)curbuf->b_p_ts); +} + +/* + * Count the size (in window cells) of the indent in line "lnum". + */ +int get_indent_lnum(lnum) +linenr_T lnum; +{ + return get_indent_str(ml_get(lnum), (int)curbuf->b_p_ts); +} + +/* + * Count the size (in window cells) of the indent in line "lnum" of buffer + * "buf". + */ +int get_indent_buf(buf, lnum) +buf_T *buf; +linenr_T lnum; +{ + return get_indent_str(ml_get_buf(buf, lnum, FALSE), (int)buf->b_p_ts); +} + +/* + * count the size (in window cells) of the indent in line "ptr", with + * 'tabstop' at "ts" + */ +int get_indent_str(ptr, ts) +char_u *ptr; +int ts; +{ + int count = 0; + + for (; *ptr; ++ptr) { + if (*ptr == TAB) /* count a tab for what it is worth */ + count += ts - (count % ts); + else if (*ptr == ' ') + ++count; /* count a space for one */ + else + break; + } + return count; +} + +/* + * Set the indent of the current line. + * Leaves the cursor on the first non-blank in the line. + * Caller must take care of undo. + * "flags": + * SIN_CHANGED: call changed_bytes() if the line was changed. + * SIN_INSERT: insert the indent in front of the line. + * SIN_UNDO: save line for undo before changing it. + * Returns TRUE if the line was changed. + */ +int set_indent(size, flags) +int size; /* measured in spaces */ +int flags; +{ + char_u *p; + char_u *newline; + char_u *oldline; + char_u *s; + int todo; + int ind_len; /* measured in characters */ + int line_len; + int doit = FALSE; + int ind_done = 0; /* measured in spaces */ + int tab_pad; + int retval = FALSE; + int orig_char_len = -1; /* number of initial whitespace chars when + 'et' and 'pi' are both set */ + + /* + * First check if there is anything to do and compute the number of + * characters needed for the indent. + */ + todo = size; + ind_len = 0; + p = oldline = ml_get_curline(); + + /* Calculate the buffer size for the new indent, and check to see if it + * isn't already set */ + + /* if 'expandtab' isn't set: use TABs; if both 'expandtab' and + * 'preserveindent' are set count the number of characters at the + * beginning of the line to be copied */ + if (!curbuf->b_p_et || (!(flags & SIN_INSERT) && curbuf->b_p_pi)) { + /* If 'preserveindent' is set then reuse as much as possible of + * the existing indent structure for the new indent */ + if (!(flags & SIN_INSERT) && curbuf->b_p_pi) { + ind_done = 0; + + /* count as many characters as we can use */ + while (todo > 0 && vim_iswhite(*p)) { + if (*p == TAB) { + tab_pad = (int)curbuf->b_p_ts + - (ind_done % (int)curbuf->b_p_ts); + /* stop if this tab will overshoot the target */ + if (todo < tab_pad) + break; + todo -= tab_pad; + ++ind_len; + ind_done += tab_pad; + } else { + --todo; + ++ind_len; + ++ind_done; + } + ++p; + } + + /* Set initial number of whitespace chars to copy if we are + * preserving indent but expandtab is set */ + if (curbuf->b_p_et) + orig_char_len = ind_len; + + /* Fill to next tabstop with a tab, if possible */ + tab_pad = (int)curbuf->b_p_ts - (ind_done % (int)curbuf->b_p_ts); + if (todo >= tab_pad && orig_char_len == -1) { + doit = TRUE; + todo -= tab_pad; + ++ind_len; + /* ind_done += tab_pad; */ + } + } + + /* count tabs required for indent */ + while (todo >= (int)curbuf->b_p_ts) { + if (*p != TAB) + doit = TRUE; + else + ++p; + todo -= (int)curbuf->b_p_ts; + ++ind_len; + /* ind_done += (int)curbuf->b_p_ts; */ + } + } + /* count spaces required for indent */ + while (todo > 0) { + if (*p != ' ') + doit = TRUE; + else + ++p; + --todo; + ++ind_len; + /* ++ind_done; */ + } + + /* Return if the indent is OK already. */ + if (!doit && !vim_iswhite(*p) && !(flags & SIN_INSERT)) + return FALSE; + + /* Allocate memory for the new line. */ + if (flags & SIN_INSERT) + p = oldline; + else + p = skipwhite(p); + line_len = (int)STRLEN(p) + 1; + + /* If 'preserveindent' and 'expandtab' are both set keep the original + * characters and allocate accordingly. We will fill the rest with spaces + * after the if (!curbuf->b_p_et) below. */ + if (orig_char_len != -1) { + newline = alloc(orig_char_len + size - ind_done + line_len); + if (newline == NULL) + return FALSE; + todo = size - ind_done; + ind_len = orig_char_len + todo; /* Set total length of indent in + * characters, which may have been + * undercounted until now */ + p = oldline; + s = newline; + while (orig_char_len > 0) { + *s++ = *p++; + orig_char_len--; + } + + /* Skip over any additional white space (useful when newindent is less + * than old) */ + while (vim_iswhite(*p)) + ++p; + + } else { + todo = size; + newline = alloc(ind_len + line_len); + if (newline == NULL) + return FALSE; + s = newline; + } + + /* Put the characters in the new line. */ + /* if 'expandtab' isn't set: use TABs */ + if (!curbuf->b_p_et) { + /* If 'preserveindent' is set then reuse as much as possible of + * the existing indent structure for the new indent */ + if (!(flags & SIN_INSERT) && curbuf->b_p_pi) { + p = oldline; + ind_done = 0; + + while (todo > 0 && vim_iswhite(*p)) { + if (*p == TAB) { + tab_pad = (int)curbuf->b_p_ts + - (ind_done % (int)curbuf->b_p_ts); + /* stop if this tab will overshoot the target */ + if (todo < tab_pad) + break; + todo -= tab_pad; + ind_done += tab_pad; + } else { + --todo; + ++ind_done; + } + *s++ = *p++; + } + + /* Fill to next tabstop with a tab, if possible */ + tab_pad = (int)curbuf->b_p_ts - (ind_done % (int)curbuf->b_p_ts); + if (todo >= tab_pad) { + *s++ = TAB; + todo -= tab_pad; + } + + p = skipwhite(p); + } + + while (todo >= (int)curbuf->b_p_ts) { + *s++ = TAB; + todo -= (int)curbuf->b_p_ts; + } + } + while (todo > 0) { + *s++ = ' '; + --todo; + } + mch_memmove(s, p, (size_t)line_len); + + /* Replace the line (unless undo fails). */ + if (!(flags & SIN_UNDO) || u_savesub(curwin->w_cursor.lnum) == OK) { + ml_replace(curwin->w_cursor.lnum, newline, FALSE); + if (flags & SIN_CHANGED) + changed_bytes(curwin->w_cursor.lnum, 0); + /* Correct saved cursor position if it is in this line. */ + if (saved_cursor.lnum == curwin->w_cursor.lnum) { + if (saved_cursor.col >= (colnr_T)(p - oldline)) + /* cursor was after the indent, adjust for the number of + * bytes added/removed */ + saved_cursor.col += ind_len - (colnr_T)(p - oldline); + else if (saved_cursor.col >= (colnr_T)(s - newline)) + /* cursor was in the indent, and is now after it, put it back + * at the start of the indent (replacing spaces with TAB) */ + saved_cursor.col = (colnr_T)(s - newline); + } + retval = TRUE; + } else + vim_free(newline); + + curwin->w_cursor.col = ind_len; + return retval; +} + +/* + * Copy the indent from ptr to the current line (and fill to size) + * Leaves the cursor on the first non-blank in the line. + * Returns TRUE if the line was changed. + */ +static int copy_indent(size, src) +int size; +char_u *src; +{ + char_u *p = NULL; + char_u *line = NULL; + char_u *s; + int todo; + int ind_len; + int line_len = 0; + int tab_pad; + int ind_done; + int round; + + /* Round 1: compute the number of characters needed for the indent + * Round 2: copy the characters. */ + for (round = 1; round <= 2; ++round) { + todo = size; + ind_len = 0; + ind_done = 0; + s = src; + + /* Count/copy the usable portion of the source line */ + while (todo > 0 && vim_iswhite(*s)) { + if (*s == TAB) { + tab_pad = (int)curbuf->b_p_ts + - (ind_done % (int)curbuf->b_p_ts); + /* Stop if this tab will overshoot the target */ + if (todo < tab_pad) + break; + todo -= tab_pad; + ind_done += tab_pad; + } else { + --todo; + ++ind_done; + } + ++ind_len; + if (p != NULL) + *p++ = *s; + ++s; + } + + /* Fill to next tabstop with a tab, if possible */ + tab_pad = (int)curbuf->b_p_ts - (ind_done % (int)curbuf->b_p_ts); + if (todo >= tab_pad && !curbuf->b_p_et) { + todo -= tab_pad; + ++ind_len; + if (p != NULL) + *p++ = TAB; + } + + /* Add tabs required for indent */ + while (todo >= (int)curbuf->b_p_ts && !curbuf->b_p_et) { + todo -= (int)curbuf->b_p_ts; + ++ind_len; + if (p != NULL) + *p++ = TAB; + } + + /* Count/add spaces required for indent */ + while (todo > 0) { + --todo; + ++ind_len; + if (p != NULL) + *p++ = ' '; + } + + if (p == NULL) { + /* Allocate memory for the result: the copied indent, new indent + * and the rest of the line. */ + line_len = (int)STRLEN(ml_get_curline()) + 1; + line = alloc(ind_len + line_len); + if (line == NULL) + return FALSE; + p = line; + } + } + + /* Append the original line */ + mch_memmove(p, ml_get_curline(), (size_t)line_len); + + /* Replace the line */ + ml_replace(curwin->w_cursor.lnum, line, FALSE); + + /* Put the cursor after the indent. */ + curwin->w_cursor.col = ind_len; + return TRUE; +} + +/* + * Return the indent of the current line after a number. Return -1 if no + * number was found. Used for 'n' in 'formatoptions': numbered list. + * Since a pattern is used it can actually handle more than numbers. + */ +int get_number_indent(lnum) +linenr_T lnum; +{ + colnr_T col; + pos_T pos; + + regmatch_T regmatch; + int lead_len = 0; /* length of comment leader */ + + if (lnum > curbuf->b_ml.ml_line_count) + return -1; + pos.lnum = 0; + + /* In format_lines() (i.e. not insert mode), fo+=q is needed too... */ + if ((State & INSERT) || has_format_option(FO_Q_COMS)) + lead_len = get_leader_len(ml_get(lnum), NULL, FALSE, TRUE); + regmatch.regprog = vim_regcomp(curbuf->b_p_flp, RE_MAGIC); + if (regmatch.regprog != NULL) { + regmatch.rm_ic = FALSE; + + /* vim_regexec() expects a pointer to a line. This lets us + * start matching for the flp beyond any comment leader... */ + if (vim_regexec(®match, ml_get(lnum) + lead_len, (colnr_T)0)) { + pos.lnum = lnum; + pos.col = (colnr_T)(*regmatch.endp - ml_get(lnum)); + pos.coladd = 0; + } + vim_regfree(regmatch.regprog); + } + + if (pos.lnum == 0 || *ml_get_pos(&pos) == NUL) + return -1; + getvcol(curwin, &pos, &col, NULL, NULL); + return (int)col; +} + + +static int cin_is_cinword __ARGS((char_u *line)); + +/* + * Return TRUE if the string "line" starts with a word from 'cinwords'. + */ +static int cin_is_cinword(line) +char_u *line; +{ + char_u *cinw; + char_u *cinw_buf; + int cinw_len; + int retval = FALSE; + int len; + + cinw_len = (int)STRLEN(curbuf->b_p_cinw) + 1; + cinw_buf = alloc((unsigned)cinw_len); + if (cinw_buf != NULL) { + line = skipwhite(line); + for (cinw = curbuf->b_p_cinw; *cinw; ) { + len = copy_option_part(&cinw, cinw_buf, cinw_len, ","); + if (STRNCMP(line, cinw_buf, len) == 0 + && (!vim_iswordc(line[len]) || !vim_iswordc(line[len - 1]))) { + retval = TRUE; + break; + } + } + vim_free(cinw_buf); + } + return retval; +} + +/* + * open_line: Add a new line below or above the current line. + * + * For VREPLACE mode, we only add a new line when we get to the end of the + * file, otherwise we just start replacing the next line. + * + * Caller must take care of undo. Since VREPLACE may affect any number of + * lines however, it may call u_save_cursor() again when starting to change a + * new line. + * "flags": OPENLINE_DELSPACES delete spaces after cursor + * OPENLINE_DO_COM format comments + * OPENLINE_KEEPTRAIL keep trailing spaces + * OPENLINE_MARKFIX adjust mark positions after the line break + * OPENLINE_COM_LIST format comments with list or 2nd line indent + * + * "second_line_indent": indent for after ^^D in Insert mode or if flag + * OPENLINE_COM_LIST + * + * Return TRUE for success, FALSE for failure + */ +int open_line(dir, flags, second_line_indent) +int dir; /* FORWARD or BACKWARD */ +int flags; +int second_line_indent; +{ + char_u *saved_line; /* copy of the original line */ + char_u *next_line = NULL; /* copy of the next line */ + char_u *p_extra = NULL; /* what goes to next line */ + int less_cols = 0; /* less columns for mark in new line */ + int less_cols_off = 0; /* columns to skip for mark adjust */ + pos_T old_cursor; /* old cursor position */ + int newcol = 0; /* new cursor column */ + int newindent = 0; /* auto-indent of the new line */ + int n; + int trunc_line = FALSE; /* truncate current line afterwards */ + int retval = FALSE; /* return value, default is FAIL */ + int extra_len = 0; /* length of p_extra string */ + int lead_len; /* length of comment leader */ + char_u *lead_flags; /* position in 'comments' for comment leader */ + char_u *leader = NULL; /* copy of comment leader */ + char_u *allocated = NULL; /* allocated memory */ +#if defined(FEAT_SMARTINDENT) || defined(FEAT_VREPLACE) || defined(FEAT_LISP) \ + || defined(FEAT_CINDENT) || defined(FEAT_COMMENTS) + char_u *p; +#endif + int saved_char = NUL; /* init for GCC */ + pos_T *pos; + int do_si = (!p_paste && curbuf->b_p_si + && !curbuf->b_p_cin + ); + int no_si = FALSE; /* reset did_si afterwards */ + int first_char = NUL; /* init for GCC */ + int vreplace_mode; + int did_append; /* appended a new line */ + int saved_pi = curbuf->b_p_pi; /* copy of preserveindent setting */ + + /* + * make a copy of the current line so we can mess with it + */ + saved_line = vim_strsave(ml_get_curline()); + if (saved_line == NULL) /* out of memory! */ + return FALSE; + + if (State & VREPLACE_FLAG) { + /* + * With VREPLACE we make a copy of the next line, which we will be + * starting to replace. First make the new line empty and let vim play + * with the indenting and comment leader to its heart's content. Then + * we grab what it ended up putting on the new line, put back the + * original line, and call ins_char() to put each new character onto + * the line, replacing what was there before and pushing the right + * stuff onto the replace stack. -- webb. + */ + if (curwin->w_cursor.lnum < orig_line_count) + next_line = vim_strsave(ml_get(curwin->w_cursor.lnum + 1)); + else + next_line = vim_strsave((char_u *)""); + if (next_line == NULL) /* out of memory! */ + goto theend; + + /* + * In VREPLACE mode, a NL replaces the rest of the line, and starts + * replacing the next line, so push all of the characters left on the + * line onto the replace stack. We'll push any other characters that + * might be replaced at the start of the next line (due to autoindent + * etc) a bit later. + */ + replace_push(NUL); /* Call twice because BS over NL expects it */ + replace_push(NUL); + p = saved_line + curwin->w_cursor.col; + while (*p != NUL) { + if (has_mbyte) + p += replace_push_mb(p); + else + replace_push(*p++); + } + saved_line[curwin->w_cursor.col] = NUL; + } + + if ((State & INSERT) + && !(State & VREPLACE_FLAG) + ) { + p_extra = saved_line + curwin->w_cursor.col; + if (do_si) { /* need first char after new line break */ + p = skipwhite(p_extra); + first_char = *p; + } + extra_len = (int)STRLEN(p_extra); + saved_char = *p_extra; + *p_extra = NUL; + } + + u_clearline(); /* cannot do "U" command when adding lines */ + did_si = FALSE; + ai_col = 0; + + /* + * If we just did an auto-indent, then we didn't type anything on + * the prior line, and it should be truncated. Do this even if 'ai' is not + * set because automatically inserting a comment leader also sets did_ai. + */ + if (dir == FORWARD && did_ai) + trunc_line = TRUE; + + /* + * If 'autoindent' and/or 'smartindent' is set, try to figure out what + * indent to use for the new line. + */ + if (curbuf->b_p_ai + || do_si + ) { + /* + * count white space on current line + */ + newindent = get_indent_str(saved_line, (int)curbuf->b_p_ts); + if (newindent == 0 && !(flags & OPENLINE_COM_LIST)) + newindent = second_line_indent; /* for ^^D command in insert mode */ + + /* + * Do smart indenting. + * In insert/replace mode (only when dir == FORWARD) + * we may move some text to the next line. If it starts with '{' + * don't add an indent. Fixes inserting a NL before '{' in line + * "if (condition) {" + */ + if (!trunc_line && do_si && *saved_line != NUL + && (p_extra == NULL || first_char != '{')) { + char_u *ptr; + char_u last_char; + + old_cursor = curwin->w_cursor; + ptr = saved_line; + if (flags & OPENLINE_DO_COM) + lead_len = get_leader_len(ptr, NULL, FALSE, TRUE); + else + lead_len = 0; + if (dir == FORWARD) { + /* + * Skip preprocessor directives, unless they are + * recognised as comments. + */ + if ( + lead_len == 0 && + ptr[0] == '#') { + while (ptr[0] == '#' && curwin->w_cursor.lnum > 1) + ptr = ml_get(--curwin->w_cursor.lnum); + newindent = get_indent(); + } + if (flags & OPENLINE_DO_COM) + lead_len = get_leader_len(ptr, NULL, FALSE, TRUE); + else + lead_len = 0; + if (lead_len > 0) { + /* + * This case gets the following right: + * \* + * * A comment (read '\' as '/'). + * *\ + * #define IN_THE_WAY + * This should line up here; + */ + p = skipwhite(ptr); + if (p[0] == '/' && p[1] == '*') + p++; + if (p[0] == '*') { + for (p++; *p; p++) { + if (p[0] == '/' && p[-1] == '*') { + /* + * End of C comment, indent should line up + * with the line containing the start of + * the comment + */ + curwin->w_cursor.col = (colnr_T)(p - ptr); + if ((pos = findmatch(NULL, NUL)) != NULL) { + curwin->w_cursor.lnum = pos->lnum; + newindent = get_indent(); + } + } + } + } + } else { /* Not a comment line */ + /* Find last non-blank in line */ + p = ptr + STRLEN(ptr) - 1; + while (p > ptr && vim_iswhite(*p)) + --p; + last_char = *p; + + /* + * find the character just before the '{' or ';' + */ + if (last_char == '{' || last_char == ';') { + if (p > ptr) + --p; + while (p > ptr && vim_iswhite(*p)) + --p; + } + /* + * Try to catch lines that are split over multiple + * lines. eg: + * if (condition && + * condition) { + * Should line up here! + * } + */ + if (*p == ')') { + curwin->w_cursor.col = (colnr_T)(p - ptr); + if ((pos = findmatch(NULL, '(')) != NULL) { + curwin->w_cursor.lnum = pos->lnum; + newindent = get_indent(); + ptr = ml_get_curline(); + } + } + /* + * If last character is '{' do indent, without + * checking for "if" and the like. + */ + if (last_char == '{') { + did_si = TRUE; /* do indent */ + no_si = TRUE; /* don't delete it when '{' typed */ + } + /* + * Look for "if" and the like, use 'cinwords'. + * Don't do this if the previous line ended in ';' or + * '}'. + */ + else if (last_char != ';' && last_char != '}' + && cin_is_cinword(ptr)) + did_si = TRUE; + } + } else { /* dir == BACKWARD */ + /* + * Skip preprocessor directives, unless they are + * recognised as comments. + */ + if ( + lead_len == 0 && + ptr[0] == '#') { + int was_backslashed = FALSE; + + while ((ptr[0] == '#' || was_backslashed) && + curwin->w_cursor.lnum < curbuf->b_ml.ml_line_count) { + if (*ptr && ptr[STRLEN(ptr) - 1] == '\\') + was_backslashed = TRUE; + else + was_backslashed = FALSE; + ptr = ml_get(++curwin->w_cursor.lnum); + } + if (was_backslashed) + newindent = 0; /* Got to end of file */ + else + newindent = get_indent(); + } + p = skipwhite(ptr); + if (*p == '}') /* if line starts with '}': do indent */ + did_si = TRUE; + else /* can delete indent when '{' typed */ + can_si_back = TRUE; + } + curwin->w_cursor = old_cursor; + } + if (do_si) + can_si = TRUE; + + did_ai = TRUE; + } + + /* + * Find out if the current line starts with a comment leader. + * This may then be inserted in front of the new line. + */ + end_comment_pending = NUL; + if (flags & OPENLINE_DO_COM) + lead_len = get_leader_len(saved_line, &lead_flags, dir == BACKWARD, TRUE); + else + lead_len = 0; + if (lead_len > 0) { + char_u *lead_repl = NULL; /* replaces comment leader */ + int lead_repl_len = 0; /* length of *lead_repl */ + char_u lead_middle[COM_MAX_LEN]; /* middle-comment string */ + char_u lead_end[COM_MAX_LEN]; /* end-comment string */ + char_u *comment_end = NULL; /* where lead_end has been found */ + int extra_space = FALSE; /* append extra space */ + int current_flag; + int require_blank = FALSE; /* requires blank after middle */ + char_u *p2; + + /* + * If the comment leader has the start, middle or end flag, it may not + * be used or may be replaced with the middle leader. + */ + for (p = lead_flags; *p && *p != ':'; ++p) { + if (*p == COM_BLANK) { + require_blank = TRUE; + continue; + } + if (*p == COM_START || *p == COM_MIDDLE) { + current_flag = *p; + if (*p == COM_START) { + /* + * Doing "O" on a start of comment does not insert leader. + */ + if (dir == BACKWARD) { + lead_len = 0; + break; + } + + /* find start of middle part */ + (void)copy_option_part(&p, lead_middle, COM_MAX_LEN, ","); + require_blank = FALSE; + } + + /* + * Isolate the strings of the middle and end leader. + */ + while (*p && p[-1] != ':') { /* find end of middle flags */ + if (*p == COM_BLANK) + require_blank = TRUE; + ++p; + } + (void)copy_option_part(&p, lead_middle, COM_MAX_LEN, ","); + + while (*p && p[-1] != ':') { /* find end of end flags */ + /* Check whether we allow automatic ending of comments */ + if (*p == COM_AUTO_END) + end_comment_pending = -1; /* means we want to set it */ + ++p; + } + n = copy_option_part(&p, lead_end, COM_MAX_LEN, ","); + + if (end_comment_pending == -1) /* we can set it now */ + end_comment_pending = lead_end[n - 1]; + + /* + * If the end of the comment is in the same line, don't use + * the comment leader. + */ + if (dir == FORWARD) { + for (p = saved_line + lead_len; *p; ++p) + if (STRNCMP(p, lead_end, n) == 0) { + comment_end = p; + lead_len = 0; + break; + } + } + + /* + * Doing "o" on a start of comment inserts the middle leader. + */ + if (lead_len > 0) { + if (current_flag == COM_START) { + lead_repl = lead_middle; + lead_repl_len = (int)STRLEN(lead_middle); + } + + /* + * If we have hit RETURN immediately after the start + * comment leader, then put a space after the middle + * comment leader on the next line. + */ + if (!vim_iswhite(saved_line[lead_len - 1]) + && ((p_extra != NULL + && (int)curwin->w_cursor.col == lead_len) + || (p_extra == NULL + && saved_line[lead_len] == NUL) + || require_blank)) + extra_space = TRUE; + } + break; + } + if (*p == COM_END) { + /* + * Doing "o" on the end of a comment does not insert leader. + * Remember where the end is, might want to use it to find the + * start (for C-comments). + */ + if (dir == FORWARD) { + comment_end = skipwhite(saved_line); + lead_len = 0; + break; + } + + /* + * Doing "O" on the end of a comment inserts the middle leader. + * Find the string for the middle leader, searching backwards. + */ + while (p > curbuf->b_p_com && *p != ',') + --p; + for (lead_repl = p; lead_repl > curbuf->b_p_com + && lead_repl[-1] != ':'; --lead_repl) + ; + lead_repl_len = (int)(p - lead_repl); + + /* We can probably always add an extra space when doing "O" on + * the comment-end */ + extra_space = TRUE; + + /* Check whether we allow automatic ending of comments */ + for (p2 = p; *p2 && *p2 != ':'; p2++) { + if (*p2 == COM_AUTO_END) + end_comment_pending = -1; /* means we want to set it */ + } + if (end_comment_pending == -1) { + /* Find last character in end-comment string */ + while (*p2 && *p2 != ',') + p2++; + end_comment_pending = p2[-1]; + } + break; + } + if (*p == COM_FIRST) { + /* + * Comment leader for first line only: Don't repeat leader + * when using "O", blank out leader when using "o". + */ + if (dir == BACKWARD) + lead_len = 0; + else { + lead_repl = (char_u *)""; + lead_repl_len = 0; + } + break; + } + } + if (lead_len) { + /* allocate buffer (may concatenate p_extra later) */ + leader = alloc(lead_len + lead_repl_len + extra_space + extra_len + + (second_line_indent > 0 ? second_line_indent : 0) + 1); + allocated = leader; /* remember to free it later */ + + if (leader == NULL) + lead_len = 0; + else { + vim_strncpy(leader, saved_line, lead_len); + + /* + * Replace leader with lead_repl, right or left adjusted + */ + if (lead_repl != NULL) { + int c = 0; + int off = 0; + + for (p = lead_flags; *p != NUL && *p != ':'; ) { + if (*p == COM_RIGHT || *p == COM_LEFT) + c = *p++; + else if (VIM_ISDIGIT(*p) || *p == '-') + off = getdigits(&p); + else + ++p; + } + if (c == COM_RIGHT) { /* right adjusted leader */ + /* find last non-white in the leader to line up with */ + for (p = leader + lead_len - 1; p > leader + && vim_iswhite(*p); --p) + ; + ++p; + + /* Compute the length of the replaced characters in + * screen characters, not bytes. */ + { + int repl_size = vim_strnsize(lead_repl, + lead_repl_len); + int old_size = 0; + char_u *endp = p; + int l; + + while (old_size < repl_size && p > leader) { + mb_ptr_back(leader, p); + old_size += ptr2cells(p); + } + l = lead_repl_len - (int)(endp - p); + if (l != 0) + mch_memmove(endp + l, endp, + (size_t)((leader + lead_len) - endp)); + lead_len += l; + } + mch_memmove(p, lead_repl, (size_t)lead_repl_len); + if (p + lead_repl_len > leader + lead_len) + p[lead_repl_len] = NUL; + + /* blank-out any other chars from the old leader. */ + while (--p >= leader) { + int l = mb_head_off(leader, p); + + if (l > 1) { + p -= l; + if (ptr2cells(p) > 1) { + p[1] = ' '; + --l; + } + mch_memmove(p + 1, p + l + 1, + (size_t)((leader + lead_len) - (p + l + 1))); + lead_len -= l; + *p = ' '; + } else if (!vim_iswhite(*p)) + *p = ' '; + } + } else { /* left adjusted leader */ + p = skipwhite(leader); + /* Compute the length of the replaced characters in + * screen characters, not bytes. Move the part that is + * not to be overwritten. */ + { + int repl_size = vim_strnsize(lead_repl, + lead_repl_len); + int i; + int l; + + for (i = 0; p[i] != NUL && i < lead_len; i += l) { + l = (*mb_ptr2len)(p + i); + if (vim_strnsize(p, i + l) > repl_size) + break; + } + if (i != lead_repl_len) { + mch_memmove(p + lead_repl_len, p + i, + (size_t)(lead_len - i - (p - leader))); + lead_len += lead_repl_len - i; + } + } + mch_memmove(p, lead_repl, (size_t)lead_repl_len); + + /* Replace any remaining non-white chars in the old + * leader by spaces. Keep Tabs, the indent must + * remain the same. */ + for (p += lead_repl_len; p < leader + lead_len; ++p) + if (!vim_iswhite(*p)) { + /* Don't put a space before a TAB. */ + if (p + 1 < leader + lead_len && p[1] == TAB) { + --lead_len; + mch_memmove(p, p + 1, + (leader + lead_len) - p); + } else { + int l = (*mb_ptr2len)(p); + + if (l > 1) { + if (ptr2cells(p) > 1) { + /* Replace a double-wide char with + * two spaces */ + --l; + *p++ = ' '; + } + mch_memmove(p + 1, p + l, + (leader + lead_len) - p); + lead_len -= l - 1; + } + *p = ' '; + } + } + *p = NUL; + } + + /* Recompute the indent, it may have changed. */ + if (curbuf->b_p_ai + || do_si + ) + newindent = get_indent_str(leader, (int)curbuf->b_p_ts); + + /* Add the indent offset */ + if (newindent + off < 0) { + off = -newindent; + newindent = 0; + } else + newindent += off; + + /* Correct trailing spaces for the shift, so that + * alignment remains equal. */ + while (off > 0 && lead_len > 0 + && leader[lead_len - 1] == ' ') { + /* Don't do it when there is a tab before the space */ + if (vim_strchr(skipwhite(leader), '\t') != NULL) + break; + --lead_len; + --off; + } + + /* If the leader ends in white space, don't add an + * extra space */ + if (lead_len > 0 && vim_iswhite(leader[lead_len - 1])) + extra_space = FALSE; + leader[lead_len] = NUL; + } + + if (extra_space) { + leader[lead_len++] = ' '; + leader[lead_len] = NUL; + } + + newcol = lead_len; + + /* + * if a new indent will be set below, remove the indent that + * is in the comment leader + */ + if (newindent + || did_si + ) { + while (lead_len && vim_iswhite(*leader)) { + --lead_len; + --newcol; + ++leader; + } + } + + } + did_si = can_si = FALSE; + } else if (comment_end != NULL) { + /* + * We have finished a comment, so we don't use the leader. + * If this was a C-comment and 'ai' or 'si' is set do a normal + * indent to align with the line containing the start of the + * comment. + */ + if (comment_end[0] == '*' && comment_end[1] == '/' && + (curbuf->b_p_ai + || do_si + )) { + old_cursor = curwin->w_cursor; + curwin->w_cursor.col = (colnr_T)(comment_end - saved_line); + if ((pos = findmatch(NULL, NUL)) != NULL) { + curwin->w_cursor.lnum = pos->lnum; + newindent = get_indent(); + } + curwin->w_cursor = old_cursor; + } + } + } + + /* (State == INSERT || State == REPLACE), only when dir == FORWARD */ + if (p_extra != NULL) { + *p_extra = saved_char; /* restore char that NUL replaced */ + + /* + * When 'ai' set or "flags" has OPENLINE_DELSPACES, skip to the first + * non-blank. + * + * When in REPLACE mode, put the deleted blanks on the replace stack, + * preceded by a NUL, so they can be put back when a BS is entered. + */ + if (REPLACE_NORMAL(State)) + replace_push(NUL); /* end of extra blanks */ + if (curbuf->b_p_ai || (flags & OPENLINE_DELSPACES)) { + while ((*p_extra == ' ' || *p_extra == '\t') + && (!enc_utf8 + || !utf_iscomposing(utf_ptr2char(p_extra + 1))) + ) { + if (REPLACE_NORMAL(State)) + replace_push(*p_extra); + ++p_extra; + ++less_cols_off; + } + } + if (*p_extra != NUL) + did_ai = FALSE; /* append some text, don't truncate now */ + + /* columns for marks adjusted for removed columns */ + less_cols = (int)(p_extra - saved_line); + } + + if (p_extra == NULL) + p_extra = (char_u *)""; /* append empty line */ + + /* concatenate leader and p_extra, if there is a leader */ + if (lead_len) { + if (flags & OPENLINE_COM_LIST && second_line_indent > 0) { + int i; + int padding = second_line_indent + - (newindent + (int)STRLEN(leader)); + + /* Here whitespace is inserted after the comment char. + * Below, set_indent(newindent, SIN_INSERT) will insert the + * whitespace needed before the comment char. */ + for (i = 0; i < padding; i++) { + STRCAT(leader, " "); + less_cols--; + newcol++; + } + } + STRCAT(leader, p_extra); + p_extra = leader; + did_ai = TRUE; /* So truncating blanks works with comments */ + less_cols -= lead_len; + } else + end_comment_pending = NUL; /* turns out there was no leader */ + + old_cursor = curwin->w_cursor; + if (dir == BACKWARD) + --curwin->w_cursor.lnum; + if (!(State & VREPLACE_FLAG) || old_cursor.lnum >= orig_line_count) { + if (ml_append(curwin->w_cursor.lnum, p_extra, (colnr_T)0, FALSE) + == FAIL) + goto theend; + /* Postpone calling changed_lines(), because it would mess up folding + * with markers. */ + mark_adjust(curwin->w_cursor.lnum + 1, (linenr_T)MAXLNUM, 1L, 0L); + did_append = TRUE; + } else { + /* + * In VREPLACE mode we are starting to replace the next line. + */ + curwin->w_cursor.lnum++; + if (curwin->w_cursor.lnum >= Insstart.lnum + vr_lines_changed) { + /* In case we NL to a new line, BS to the previous one, and NL + * again, we don't want to save the new line for undo twice. + */ + (void)u_save_cursor(); /* errors are ignored! */ + vr_lines_changed++; + } + ml_replace(curwin->w_cursor.lnum, p_extra, TRUE); + changed_bytes(curwin->w_cursor.lnum, 0); + curwin->w_cursor.lnum--; + did_append = FALSE; + } + + if (newindent + || did_si + ) { + ++curwin->w_cursor.lnum; + if (did_si) { + int sw = (int)get_sw_value(curbuf); + + if (p_sr) + newindent -= newindent % sw; + newindent += sw; + } + /* Copy the indent */ + if (curbuf->b_p_ci) { + (void)copy_indent(newindent, saved_line); + + /* + * Set the 'preserveindent' option so that any further screwing + * with the line doesn't entirely destroy our efforts to preserve + * it. It gets restored at the function end. + */ + curbuf->b_p_pi = TRUE; + } else + (void)set_indent(newindent, SIN_INSERT); + less_cols -= curwin->w_cursor.col; + + ai_col = curwin->w_cursor.col; + + /* + * In REPLACE mode, for each character in the new indent, there must + * be a NUL on the replace stack, for when it is deleted with BS + */ + if (REPLACE_NORMAL(State)) + for (n = 0; n < (int)curwin->w_cursor.col; ++n) + replace_push(NUL); + newcol += curwin->w_cursor.col; + if (no_si) + did_si = FALSE; + } + + /* + * In REPLACE mode, for each character in the extra leader, there must be + * a NUL on the replace stack, for when it is deleted with BS. + */ + if (REPLACE_NORMAL(State)) + while (lead_len-- > 0) + replace_push(NUL); + + curwin->w_cursor = old_cursor; + + if (dir == FORWARD) { + if (trunc_line || (State & INSERT)) { + /* truncate current line at cursor */ + saved_line[curwin->w_cursor.col] = NUL; + /* Remove trailing white space, unless OPENLINE_KEEPTRAIL used. */ + if (trunc_line && !(flags & OPENLINE_KEEPTRAIL)) + truncate_spaces(saved_line); + ml_replace(curwin->w_cursor.lnum, saved_line, FALSE); + saved_line = NULL; + if (did_append) { + changed_lines(curwin->w_cursor.lnum, curwin->w_cursor.col, + curwin->w_cursor.lnum + 1, 1L); + did_append = FALSE; + + /* Move marks after the line break to the new line. */ + if (flags & OPENLINE_MARKFIX) + mark_col_adjust(curwin->w_cursor.lnum, + curwin->w_cursor.col + less_cols_off, + 1L, (long)-less_cols); + } else + changed_bytes(curwin->w_cursor.lnum, curwin->w_cursor.col); + } + + /* + * Put the cursor on the new line. Careful: the scrollup() above may + * have moved w_cursor, we must use old_cursor. + */ + curwin->w_cursor.lnum = old_cursor.lnum + 1; + } + if (did_append) + changed_lines(curwin->w_cursor.lnum, 0, curwin->w_cursor.lnum, 1L); + + curwin->w_cursor.col = newcol; + curwin->w_cursor.coladd = 0; + + /* + * In VREPLACE mode, we are handling the replace stack ourselves, so stop + * fixthisline() from doing it (via change_indent()) by telling it we're in + * normal INSERT mode. + */ + if (State & VREPLACE_FLAG) { + vreplace_mode = State; /* So we know to put things right later */ + State = INSERT; + } else + vreplace_mode = 0; + /* + * May do lisp indenting. + */ + if (!p_paste + && leader == NULL + && curbuf->b_p_lisp + && curbuf->b_p_ai) { + fixthisline(get_lisp_indent); + p = ml_get_curline(); + ai_col = (colnr_T)(skipwhite(p) - p); + } + /* + * May do indenting after opening a new line. + */ + if (!p_paste + && (curbuf->b_p_cin + || *curbuf->b_p_inde != NUL + ) + && in_cinkeys(dir == FORWARD + ? KEY_OPEN_FORW + : KEY_OPEN_BACK, ' ', linewhite(curwin->w_cursor.lnum))) { + do_c_expr_indent(); + p = ml_get_curline(); + ai_col = (colnr_T)(skipwhite(p) - p); + } + if (vreplace_mode != 0) + State = vreplace_mode; + + /* + * Finally, VREPLACE gets the stuff on the new line, then puts back the + * original line, and inserts the new stuff char by char, pushing old stuff + * onto the replace stack (via ins_char()). + */ + if (State & VREPLACE_FLAG) { + /* Put new line in p_extra */ + p_extra = vim_strsave(ml_get_curline()); + if (p_extra == NULL) + goto theend; + + /* Put back original line */ + ml_replace(curwin->w_cursor.lnum, next_line, FALSE); + + /* Insert new stuff into line again */ + curwin->w_cursor.col = 0; + curwin->w_cursor.coladd = 0; + ins_bytes(p_extra); /* will call changed_bytes() */ + vim_free(p_extra); + next_line = NULL; + } + + retval = TRUE; /* success! */ +theend: + curbuf->b_p_pi = saved_pi; + vim_free(saved_line); + vim_free(next_line); + vim_free(allocated); + return retval; +} + +/* + * get_leader_len() returns the length in bytes of the prefix of the given + * string which introduces a comment. If this string is not a comment then + * 0 is returned. + * When "flags" is not NULL, it is set to point to the flags of the recognized + * comment leader. + * "backward" must be true for the "O" command. + * If "include_space" is set, include trailing whitespace while calculating the + * length. + */ +int get_leader_len(line, flags, backward, include_space) +char_u *line; +char_u **flags; +int backward; +int include_space; +{ + int i, j; + int result; + int got_com = FALSE; + int found_one; + char_u part_buf[COM_MAX_LEN]; /* buffer for one option part */ + char_u *string; /* pointer to comment string */ + char_u *list; + int middle_match_len = 0; + char_u *prev_list; + char_u *saved_flags = NULL; + + result = i = 0; + while (vim_iswhite(line[i])) /* leading white space is ignored */ + ++i; + + /* + * Repeat to match several nested comment strings. + */ + while (line[i] != NUL) { + /* + * scan through the 'comments' option for a match + */ + found_one = FALSE; + for (list = curbuf->b_p_com; *list; ) { + /* Get one option part into part_buf[]. Advance "list" to next + * one. Put "string" at start of string. */ + if (!got_com && flags != NULL) + *flags = list; /* remember where flags started */ + prev_list = list; + (void)copy_option_part(&list, part_buf, COM_MAX_LEN, ","); + string = vim_strchr(part_buf, ':'); + if (string == NULL) /* missing ':', ignore this part */ + continue; + *string++ = NUL; /* isolate flags from string */ + + /* If we found a middle match previously, use that match when this + * is not a middle or end. */ + if (middle_match_len != 0 + && vim_strchr(part_buf, COM_MIDDLE) == NULL + && vim_strchr(part_buf, COM_END) == NULL) + break; + + /* When we already found a nested comment, only accept further + * nested comments. */ + if (got_com && vim_strchr(part_buf, COM_NEST) == NULL) + continue; + + /* When 'O' flag present and using "O" command skip this one. */ + if (backward && vim_strchr(part_buf, COM_NOBACK) != NULL) + continue; + + /* Line contents and string must match. + * When string starts with white space, must have some white space + * (but the amount does not need to match, there might be a mix of + * TABs and spaces). */ + if (vim_iswhite(string[0])) { + if (i == 0 || !vim_iswhite(line[i - 1])) + continue; /* missing white space */ + while (vim_iswhite(string[0])) + ++string; + } + for (j = 0; string[j] != NUL && string[j] == line[i + j]; ++j) + ; + if (string[j] != NUL) + continue; /* string doesn't match */ + + /* When 'b' flag used, there must be white space or an + * end-of-line after the string in the line. */ + if (vim_strchr(part_buf, COM_BLANK) != NULL + && !vim_iswhite(line[i + j]) && line[i + j] != NUL) + continue; + + /* We have found a match, stop searching unless this is a middle + * comment. The middle comment can be a substring of the end + * comment in which case it's better to return the length of the + * end comment and its flags. Thus we keep searching with middle + * and end matches and use an end match if it matches better. */ + if (vim_strchr(part_buf, COM_MIDDLE) != NULL) { + if (middle_match_len == 0) { + middle_match_len = j; + saved_flags = prev_list; + } + continue; + } + if (middle_match_len != 0 && j > middle_match_len) + /* Use this match instead of the middle match, since it's a + * longer thus better match. */ + middle_match_len = 0; + + if (middle_match_len == 0) + i += j; + found_one = TRUE; + break; + } + + if (middle_match_len != 0) { + /* Use the previously found middle match after failing to find a + * match with an end. */ + if (!got_com && flags != NULL) + *flags = saved_flags; + i += middle_match_len; + found_one = TRUE; + } + + /* No match found, stop scanning. */ + if (!found_one) + break; + + result = i; + + /* Include any trailing white space. */ + while (vim_iswhite(line[i])) + ++i; + + if (include_space) + result = i; + + /* If this comment doesn't nest, stop here. */ + got_com = TRUE; + if (vim_strchr(part_buf, COM_NEST) == NULL) + break; + } + return result; +} + +/* + * Return the offset at which the last comment in line starts. If there is no + * comment in the whole line, -1 is returned. + * + * When "flags" is not null, it is set to point to the flags describing the + * recognized comment leader. + */ +int get_last_leader_offset(line, flags) +char_u *line; +char_u **flags; +{ + int result = -1; + int i, j; + int lower_check_bound = 0; + char_u *string; + char_u *com_leader; + char_u *com_flags; + char_u *list; + int found_one; + char_u part_buf[COM_MAX_LEN]; /* buffer for one option part */ + + /* + * Repeat to match several nested comment strings. + */ + i = (int)STRLEN(line); + while (--i >= lower_check_bound) { + /* + * scan through the 'comments' option for a match + */ + found_one = FALSE; + for (list = curbuf->b_p_com; *list; ) { + char_u *flags_save = list; + + /* + * Get one option part into part_buf[]. Advance list to next one. + * put string at start of string. + */ + (void)copy_option_part(&list, part_buf, COM_MAX_LEN, ","); + string = vim_strchr(part_buf, ':'); + if (string == NULL) { /* If everything is fine, this cannot actually + * happen. */ + continue; + } + *string++ = NUL; /* Isolate flags from string. */ + com_leader = string; + + /* + * Line contents and string must match. + * When string starts with white space, must have some white space + * (but the amount does not need to match, there might be a mix of + * TABs and spaces). + */ + if (vim_iswhite(string[0])) { + if (i == 0 || !vim_iswhite(line[i - 1])) + continue; + while (vim_iswhite(string[0])) + ++string; + } + for (j = 0; string[j] != NUL && string[j] == line[i + j]; ++j) + /* do nothing */; + if (string[j] != NUL) + continue; + + /* + * When 'b' flag used, there must be white space or an + * end-of-line after the string in the line. + */ + if (vim_strchr(part_buf, COM_BLANK) != NULL + && !vim_iswhite(line[i + j]) && line[i + j] != NUL) { + continue; + } + + /* + * We have found a match, stop searching. + */ + found_one = TRUE; + + if (flags) + *flags = flags_save; + com_flags = flags_save; + + break; + } + + if (found_one) { + char_u part_buf2[COM_MAX_LEN]; /* buffer for one option part */ + int len1, len2, off; + + result = i; + /* + * If this comment nests, continue searching. + */ + if (vim_strchr(part_buf, COM_NEST) != NULL) + continue; + + lower_check_bound = i; + + /* Let's verify whether the comment leader found is a substring + * of other comment leaders. If it is, let's adjust the + * lower_check_bound so that we make sure that we have determined + * the comment leader correctly. + */ + + while (vim_iswhite(*com_leader)) + ++com_leader; + len1 = (int)STRLEN(com_leader); + + for (list = curbuf->b_p_com; *list; ) { + char_u *flags_save = list; + + (void)copy_option_part(&list, part_buf2, COM_MAX_LEN, ","); + if (flags_save == com_flags) + continue; + string = vim_strchr(part_buf2, ':'); + ++string; + while (vim_iswhite(*string)) + ++string; + len2 = (int)STRLEN(string); + if (len2 == 0) + continue; + + /* Now we have to verify whether string ends with a substring + * beginning the com_leader. */ + for (off = (len2 > i ? i : len2); off > 0 && off + len1 > len2; ) { + --off; + if (!STRNCMP(string + off, com_leader, len2 - off)) { + if (i - off < lower_check_bound) + lower_check_bound = i - off; + } + } + } + } + } + return result; +} + +/* + * Return the number of window lines occupied by buffer line "lnum". + */ +int plines(lnum) +linenr_T lnum; +{ + return plines_win(curwin, lnum, TRUE); +} + +int plines_win(wp, lnum, winheight) +win_T *wp; +linenr_T lnum; +int winheight; /* when TRUE limit to window height */ +{ + /* Check for filler lines above this buffer line. When folded the result + * is one line anyway. */ + return plines_win_nofill(wp, lnum, winheight) + diff_check_fill(wp, lnum); +} + +int plines_nofill(lnum) +linenr_T lnum; +{ + return plines_win_nofill(curwin, lnum, TRUE); +} + +int plines_win_nofill(wp, lnum, winheight) +win_T *wp; +linenr_T lnum; +int winheight; /* when TRUE limit to window height */ +{ + int lines; + + if (!wp->w_p_wrap) + return 1; + + if (wp->w_width == 0) + return 1; + + /* A folded lines is handled just like an empty line. */ + /* NOTE: Caller must handle lines that are MAYBE folded. */ + if (lineFolded(wp, lnum) == TRUE) + return 1; + + lines = plines_win_nofold(wp, lnum); + if (winheight > 0 && lines > wp->w_height) + return (int)wp->w_height; + return lines; +} + +/* + * Return number of window lines physical line "lnum" will occupy in window + * "wp". Does not care about folding, 'wrap' or 'diff'. + */ +int plines_win_nofold(wp, lnum) +win_T *wp; +linenr_T lnum; +{ + char_u *s; + long col; + int width; + + s = ml_get_buf(wp->w_buffer, lnum, FALSE); + if (*s == NUL) /* empty line */ + return 1; + col = win_linetabsize(wp, s, (colnr_T)MAXCOL); + + /* + * If list mode is on, then the '$' at the end of the line may take up one + * extra column. + */ + if (wp->w_p_list && lcs_eol != NUL) + col += 1; + + /* + * Add column offset for 'number', 'relativenumber' and 'foldcolumn'. + */ + width = W_WIDTH(wp) - win_col_off(wp); + if (width <= 0) + return 32000; + if (col <= width) + return 1; + col -= width; + width += win_col_off2(wp); + return (col + (width - 1)) / width + 1; +} + +/* + * Like plines_win(), but only reports the number of physical screen lines + * used from the start of the line to the given column number. + */ +int plines_win_col(wp, lnum, column) +win_T *wp; +linenr_T lnum; +long column; +{ + long col; + char_u *s; + int lines = 0; + int width; + + /* Check for filler lines above this buffer line. When folded the result + * is one line anyway. */ + lines = diff_check_fill(wp, lnum); + + if (!wp->w_p_wrap) + return lines + 1; + + if (wp->w_width == 0) + return lines + 1; + + s = ml_get_buf(wp->w_buffer, lnum, FALSE); + + col = 0; + while (*s != NUL && --column >= 0) { + col += win_lbr_chartabsize(wp, s, (colnr_T)col, NULL); + mb_ptr_adv(s); + } + + /* + * If *s is a TAB, and the TAB is not displayed as ^I, and we're not in + * INSERT mode, then col must be adjusted so that it represents the last + * screen position of the TAB. This only fixes an error when the TAB wraps + * from one screen line to the next (when 'columns' is not a multiple of + * 'ts') -- webb. + */ + if (*s == TAB && (State & NORMAL) && (!wp->w_p_list || lcs_tab1)) + col += win_lbr_chartabsize(wp, s, (colnr_T)col, NULL) - 1; + + /* + * Add column offset for 'number', 'relativenumber', 'foldcolumn', etc. + */ + width = W_WIDTH(wp) - win_col_off(wp); + if (width <= 0) + return 9999; + + lines += 1; + if (col > width) + lines += (col - width) / (width + win_col_off2(wp)) + 1; + return lines; +} + +int plines_m_win(wp, first, last) +win_T *wp; +linenr_T first, last; +{ + int count = 0; + + while (first <= last) { + int x; + + /* Check if there are any really folded lines, but also included lines + * that are maybe folded. */ + x = foldedCount(wp, first, NULL); + if (x > 0) { + ++count; /* count 1 for "+-- folded" line */ + first += x; + } else { + if (first == wp->w_topline) + count += plines_win_nofill(wp, first, TRUE) + wp->w_topfill; + else + count += plines_win(wp, first, TRUE); + ++first; + } + } + return count; +} + +/* + * Insert string "p" at the cursor position. Stops at a NUL byte. + * Handles Replace mode and multi-byte characters. + */ +void ins_bytes(p) +char_u *p; +{ + ins_bytes_len(p, (int)STRLEN(p)); +} + +#if defined(FEAT_VREPLACE) || defined(FEAT_INS_EXPAND) \ + || defined(FEAT_COMMENTS) || defined(FEAT_MBYTE) || defined(PROTO) +/* + * Insert string "p" with length "len" at the cursor position. + * Handles Replace mode and multi-byte characters. + */ +void ins_bytes_len(p, len) +char_u *p; +int len; +{ + int i; + int n; + + if (has_mbyte) + for (i = 0; i < len; i += n) { + if (enc_utf8) + /* avoid reading past p[len] */ + n = utfc_ptr2len_len(p + i, len - i); + else + n = (*mb_ptr2len)(p + i); + ins_char_bytes(p + i, n); + } + else + for (i = 0; i < len; ++i) + ins_char(p[i]); +} +#endif + +/* + * Insert or replace a single character at the cursor position. + * When in REPLACE or VREPLACE mode, replace any existing character. + * Caller must have prepared for undo. + * For multi-byte characters we get the whole character, the caller must + * convert bytes to a character. + */ +void ins_char(c) +int c; +{ + char_u buf[MB_MAXBYTES + 1]; + int n; + + n = (*mb_char2bytes)(c, buf); + + /* When "c" is 0x100, 0x200, etc. we don't want to insert a NUL byte. + * Happens for CTRL-Vu9900. */ + if (buf[0] == 0) + buf[0] = '\n'; + + ins_char_bytes(buf, n); +} + +void ins_char_bytes(buf, charlen) +char_u *buf; +int charlen; +{ + int c = buf[0]; + int newlen; /* nr of bytes inserted */ + int oldlen; /* nr of bytes deleted (0 when not replacing) */ + char_u *p; + char_u *newp; + char_u *oldp; + int linelen; /* length of old line including NUL */ + colnr_T col; + linenr_T lnum = curwin->w_cursor.lnum; + int i; + + /* Break tabs if needed. */ + if (virtual_active() && curwin->w_cursor.coladd > 0) + coladvance_force(getviscol()); + + col = curwin->w_cursor.col; + oldp = ml_get(lnum); + linelen = (int)STRLEN(oldp) + 1; + + /* The lengths default to the values for when not replacing. */ + oldlen = 0; + newlen = charlen; + + if (State & REPLACE_FLAG) { + if (State & VREPLACE_FLAG) { + colnr_T new_vcol = 0; /* init for GCC */ + colnr_T vcol; + int old_list; + + /* + * Disable 'list' temporarily, unless 'cpo' contains the 'L' flag. + * Returns the old value of list, so when finished, + * curwin->w_p_list should be set back to this. + */ + old_list = curwin->w_p_list; + if (old_list && vim_strchr(p_cpo, CPO_LISTWM) == NULL) + curwin->w_p_list = FALSE; + + /* + * In virtual replace mode each character may replace one or more + * characters (zero if it's a TAB). Count the number of bytes to + * be deleted to make room for the new character, counting screen + * cells. May result in adding spaces to fill a gap. + */ + getvcol(curwin, &curwin->w_cursor, NULL, &vcol, NULL); + new_vcol = vcol + chartabsize(buf, vcol); + while (oldp[col + oldlen] != NUL && vcol < new_vcol) { + vcol += chartabsize(oldp + col + oldlen, vcol); + /* Don't need to remove a TAB that takes us to the right + * position. */ + if (vcol > new_vcol && oldp[col + oldlen] == TAB) + break; + oldlen += (*mb_ptr2len)(oldp + col + oldlen); + /* Deleted a bit too much, insert spaces. */ + if (vcol > new_vcol) + newlen += vcol - new_vcol; + } + curwin->w_p_list = old_list; + } else if (oldp[col] != NUL) { + /* normal replace */ + oldlen = (*mb_ptr2len)(oldp + col); + } + + + /* Push the replaced bytes onto the replace stack, so that they can be + * put back when BS is used. The bytes of a multi-byte character are + * done the other way around, so that the first byte is popped off + * first (it tells the byte length of the character). */ + replace_push(NUL); + for (i = 0; i < oldlen; ++i) { + if (has_mbyte) + i += replace_push_mb(oldp + col + i) - 1; + else + replace_push(oldp[col + i]); + } + } + + newp = alloc_check((unsigned)(linelen + newlen - oldlen)); + if (newp == NULL) + return; + + /* Copy bytes before the cursor. */ + if (col > 0) + mch_memmove(newp, oldp, (size_t)col); + + /* Copy bytes after the changed character(s). */ + p = newp + col; + mch_memmove(p + newlen, oldp + col + oldlen, + (size_t)(linelen - col - oldlen)); + + /* Insert or overwrite the new character. */ + mch_memmove(p, buf, charlen); + i = charlen; + + /* Fill with spaces when necessary. */ + while (i < newlen) + p[i++] = ' '; + + /* Replace the line in the buffer. */ + ml_replace(lnum, newp, FALSE); + + /* mark the buffer as changed and prepare for displaying */ + changed_bytes(lnum, col); + + /* + * If we're in Insert or Replace mode and 'showmatch' is set, then briefly + * show the match for right parens and braces. + */ + if (p_sm && (State & INSERT) + && msg_silent == 0 + && !ins_compl_active() + ) { + if (has_mbyte) + showmatch(mb_ptr2char(buf)); + else + showmatch(c); + } + + if (!p_ri || (State & REPLACE_FLAG)) { + /* Normal insert: move cursor right */ + curwin->w_cursor.col += charlen; + } + /* + * TODO: should try to update w_row here, to avoid recomputing it later. + */ +} + +/* + * Insert a string at the cursor position. + * Note: Does NOT handle Replace mode. + * Caller must have prepared for undo. + */ +void ins_str(s) +char_u *s; +{ + char_u *oldp, *newp; + int newlen = (int)STRLEN(s); + int oldlen; + colnr_T col; + linenr_T lnum = curwin->w_cursor.lnum; + + if (virtual_active() && curwin->w_cursor.coladd > 0) + coladvance_force(getviscol()); + + col = curwin->w_cursor.col; + oldp = ml_get(lnum); + oldlen = (int)STRLEN(oldp); + + newp = alloc_check((unsigned)(oldlen + newlen + 1)); + if (newp == NULL) + return; + if (col > 0) + mch_memmove(newp, oldp, (size_t)col); + mch_memmove(newp + col, s, (size_t)newlen); + mch_memmove(newp + col + newlen, oldp + col, (size_t)(oldlen - col + 1)); + ml_replace(lnum, newp, FALSE); + changed_bytes(lnum, col); + curwin->w_cursor.col += newlen; +} + +/* + * Delete one character under the cursor. + * If "fixpos" is TRUE, don't leave the cursor on the NUL after the line. + * Caller must have prepared for undo. + * + * return FAIL for failure, OK otherwise + */ +int del_char(fixpos) +int fixpos; +{ + if (has_mbyte) { + /* Make sure the cursor is at the start of a character. */ + mb_adjust_cursor(); + if (*ml_get_cursor() == NUL) + return FAIL; + return del_chars(1L, fixpos); + } + return del_bytes(1L, fixpos, TRUE); +} + +/* + * Like del_bytes(), but delete characters instead of bytes. + */ +int del_chars(count, fixpos) +long count; +int fixpos; +{ + long bytes = 0; + long i; + char_u *p; + int l; + + p = ml_get_cursor(); + for (i = 0; i < count && *p != NUL; ++i) { + l = (*mb_ptr2len)(p); + bytes += l; + p += l; + } + return del_bytes(bytes, fixpos, TRUE); +} + +/* + * Delete "count" bytes under the cursor. + * If "fixpos" is TRUE, don't leave the cursor on the NUL after the line. + * Caller must have prepared for undo. + * + * return FAIL for failure, OK otherwise + */ +int del_bytes(count, fixpos_arg, use_delcombine) +long count; +int fixpos_arg; +int use_delcombine UNUSED; /* 'delcombine' option applies */ +{ + char_u *oldp, *newp; + colnr_T oldlen; + linenr_T lnum = curwin->w_cursor.lnum; + colnr_T col = curwin->w_cursor.col; + int was_alloced; + long movelen; + int fixpos = fixpos_arg; + + oldp = ml_get(lnum); + oldlen = (int)STRLEN(oldp); + + /* + * Can't do anything when the cursor is on the NUL after the line. + */ + if (col >= oldlen) + return FAIL; + + /* If 'delcombine' is set and deleting (less than) one character, only + * delete the last combining character. */ + if (p_deco && use_delcombine && enc_utf8 + && utfc_ptr2len(oldp + col) >= count) { + int cc[MAX_MCO]; + int n; + + (void)utfc_ptr2char(oldp + col, cc); + if (cc[0] != NUL) { + /* Find the last composing char, there can be several. */ + n = col; + do { + col = n; + count = utf_ptr2len(oldp + n); + n += count; + } while (UTF_COMPOSINGLIKE(oldp + col, oldp + n)); + fixpos = 0; + } + } + + /* + * When count is too big, reduce it. + */ + movelen = (long)oldlen - (long)col - count + 1; /* includes trailing NUL */ + if (movelen <= 1) { + /* + * If we just took off the last character of a non-blank line, and + * fixpos is TRUE, we don't want to end up positioned at the NUL, + * unless "restart_edit" is set or 'virtualedit' contains "onemore". + */ + if (col > 0 && fixpos && restart_edit == 0 + && (ve_flags & VE_ONEMORE) == 0 + ) { + --curwin->w_cursor.col; + curwin->w_cursor.coladd = 0; + if (has_mbyte) + curwin->w_cursor.col -= + (*mb_head_off)(oldp, oldp + curwin->w_cursor.col); + } + count = oldlen - col; + movelen = 1; + } + + /* + * If the old line has been allocated the deletion can be done in the + * existing line. Otherwise a new line has to be allocated + * Can't do this when using Netbeans, because we would need to invoke + * netbeans_removed(), which deallocates the line. Let ml_replace() take + * care of notifying Netbeans. + */ + was_alloced = ml_line_alloced(); /* check if oldp was allocated */ + if (was_alloced) + newp = oldp; /* use same allocated memory */ + else { /* need to allocate a new line */ + newp = alloc((unsigned)(oldlen + 1 - count)); + if (newp == NULL) + return FAIL; + mch_memmove(newp, oldp, (size_t)col); + } + mch_memmove(newp + col, oldp + col + count, (size_t)movelen); + if (!was_alloced) + ml_replace(lnum, newp, FALSE); + + /* mark the buffer as changed and prepare for displaying */ + changed_bytes(lnum, curwin->w_cursor.col); + + return OK; +} + +/* + * Delete from cursor to end of line. + * Caller must have prepared for undo. + * + * return FAIL for failure, OK otherwise + */ +int truncate_line(fixpos) +int fixpos; /* if TRUE fix the cursor position when done */ +{ + char_u *newp; + linenr_T lnum = curwin->w_cursor.lnum; + colnr_T col = curwin->w_cursor.col; + + if (col == 0) + newp = vim_strsave((char_u *)""); + else + newp = vim_strnsave(ml_get(lnum), col); + + if (newp == NULL) + return FAIL; + + ml_replace(lnum, newp, FALSE); + + /* mark the buffer as changed and prepare for displaying */ + changed_bytes(lnum, curwin->w_cursor.col); + + /* + * If "fixpos" is TRUE we don't want to end up positioned at the NUL. + */ + if (fixpos && curwin->w_cursor.col > 0) + --curwin->w_cursor.col; + + return OK; +} + +/* + * Delete "nlines" lines at the cursor. + * Saves the lines for undo first if "undo" is TRUE. + */ +void del_lines(nlines, undo) +long nlines; /* number of lines to delete */ +int undo; /* if TRUE, prepare for undo */ +{ + long n; + linenr_T first = curwin->w_cursor.lnum; + + if (nlines <= 0) + return; + + /* save the deleted lines for undo */ + if (undo && u_savedel(first, nlines) == FAIL) + return; + + for (n = 0; n < nlines; ) { + if (curbuf->b_ml.ml_flags & ML_EMPTY) /* nothing to delete */ + break; + + ml_delete(first, TRUE); + ++n; + + /* If we delete the last line in the file, stop */ + if (first > curbuf->b_ml.ml_line_count) + break; + } + + /* Correct the cursor position before calling deleted_lines_mark(), it may + * trigger a callback to display the cursor. */ + curwin->w_cursor.col = 0; + check_cursor_lnum(); + + /* adjust marks, mark the buffer as changed and prepare for displaying */ + deleted_lines_mark(first, n); +} + +int gchar_pos(pos) +pos_T *pos; +{ + char_u *ptr = ml_get_pos(pos); + + if (has_mbyte) + return (*mb_ptr2char)(ptr); + return (int)*ptr; +} + +int gchar_cursor() { + if (has_mbyte) + return (*mb_ptr2char)(ml_get_cursor()); + return (int)*ml_get_cursor(); +} + +/* + * Write a character at the current cursor position. + * It is directly written into the block. + */ +void pchar_cursor(c) +int c; +{ + *(ml_get_buf(curbuf, curwin->w_cursor.lnum, TRUE) + + curwin->w_cursor.col) = c; +} + +/* + * When extra == 0: Return TRUE if the cursor is before or on the first + * non-blank in the line. + * When extra == 1: Return TRUE if the cursor is before the first non-blank in + * the line. + */ +int inindent(extra) +int extra; +{ + char_u *ptr; + colnr_T col; + + for (col = 0, ptr = ml_get_curline(); vim_iswhite(*ptr); ++col) + ++ptr; + if (col >= curwin->w_cursor.col + extra) + return TRUE; + else + return FALSE; +} + +/* + * Skip to next part of an option argument: Skip space and comma. + */ +char_u * skip_to_option_part(p) +char_u *p; +{ + if (*p == ',') + ++p; + while (*p == ' ') + ++p; + return p; +} + +/* + * Call this function when something in the current buffer is changed. + * + * Most often called through changed_bytes() and changed_lines(), which also + * mark the area of the display to be redrawn. + * + * Careful: may trigger autocommands that reload the buffer. + */ +void changed() { + + if (!curbuf->b_changed) { + int save_msg_scroll = msg_scroll; + + /* Give a warning about changing a read-only file. This may also + * check-out the file, thus change "curbuf"! */ + change_warning(0); + + /* Create a swap file if that is wanted. + * Don't do this for "nofile" and "nowrite" buffer types. */ + if (curbuf->b_may_swap + && !bt_dontwrite(curbuf) + ) { + ml_open_file(curbuf); + + /* The ml_open_file() can cause an ATTENTION message. + * Wait two seconds, to make sure the user reads this unexpected + * message. Since we could be anywhere, call wait_return() now, + * and don't let the emsg() set msg_scroll. */ + if (need_wait_return && emsg_silent == 0) { + out_flush(); + ui_delay(2000L, TRUE); + wait_return(TRUE); + msg_scroll = save_msg_scroll; + } + } + changed_int(); + } + ++curbuf->b_changedtick; +} + +/* + * Internal part of changed(), no user interaction. + */ +void changed_int() { + curbuf->b_changed = TRUE; + ml_setflags(curbuf); + check_status(curbuf); + redraw_tabline = TRUE; + need_maketitle = TRUE; /* set window title later */ +} + +static void changedOneline __ARGS((buf_T *buf, linenr_T lnum)); +static void changed_lines_buf __ARGS((buf_T *buf, linenr_T lnum, linenr_T lnume, + long xtra)); +static void changed_common __ARGS((linenr_T lnum, colnr_T col, linenr_T lnume, + long xtra)); + +/* + * Changed bytes within a single line for the current buffer. + * - marks the windows on this buffer to be redisplayed + * - marks the buffer changed by calling changed() + * - invalidates cached values + * Careful: may trigger autocommands that reload the buffer. + */ +void changed_bytes(lnum, col) +linenr_T lnum; +colnr_T col; +{ + changedOneline(curbuf, lnum); + changed_common(lnum, col, lnum + 1, 0L); + + /* Diff highlighting in other diff windows may need to be updated too. */ + if (curwin->w_p_diff) { + win_T *wp; + linenr_T wlnum; + + for (wp = firstwin; wp != NULL; wp = wp->w_next) + if (wp->w_p_diff && wp != curwin) { + redraw_win_later(wp, VALID); + wlnum = diff_lnum_win(lnum, wp); + if (wlnum > 0) + changedOneline(wp->w_buffer, wlnum); + } + } +} + +static void changedOneline(buf, lnum) +buf_T *buf; +linenr_T lnum; +{ + if (buf->b_mod_set) { + /* find the maximum area that must be redisplayed */ + if (lnum < buf->b_mod_top) + buf->b_mod_top = lnum; + else if (lnum >= buf->b_mod_bot) + buf->b_mod_bot = lnum + 1; + } else { + /* set the area that must be redisplayed to one line */ + buf->b_mod_set = TRUE; + buf->b_mod_top = lnum; + buf->b_mod_bot = lnum + 1; + buf->b_mod_xlines = 0; + } +} + +/* + * Appended "count" lines below line "lnum" in the current buffer. + * Must be called AFTER the change and after mark_adjust(). + * Takes care of marking the buffer to be redrawn and sets the changed flag. + */ +void appended_lines(lnum, count) +linenr_T lnum; +long count; +{ + changed_lines(lnum + 1, 0, lnum + 1, count); +} + +/* + * Like appended_lines(), but adjust marks first. + */ +void appended_lines_mark(lnum, count) +linenr_T lnum; +long count; +{ + mark_adjust(lnum + 1, (linenr_T)MAXLNUM, count, 0L); + changed_lines(lnum + 1, 0, lnum + 1, count); +} + +/* + * Deleted "count" lines at line "lnum" in the current buffer. + * Must be called AFTER the change and after mark_adjust(). + * Takes care of marking the buffer to be redrawn and sets the changed flag. + */ +void deleted_lines(lnum, count) +linenr_T lnum; +long count; +{ + changed_lines(lnum, 0, lnum + count, -count); +} + +/* + * Like deleted_lines(), but adjust marks first. + * Make sure the cursor is on a valid line before calling, a GUI callback may + * be triggered to display the cursor. + */ +void deleted_lines_mark(lnum, count) +linenr_T lnum; +long count; +{ + mark_adjust(lnum, (linenr_T)(lnum + count - 1), (long)MAXLNUM, -count); + changed_lines(lnum, 0, lnum + count, -count); +} + +/* + * Changed lines for the current buffer. + * Must be called AFTER the change and after mark_adjust(). + * - mark the buffer changed by calling changed() + * - mark the windows on this buffer to be redisplayed + * - invalidate cached values + * "lnum" is the first line that needs displaying, "lnume" the first line + * below the changed lines (BEFORE the change). + * When only inserting lines, "lnum" and "lnume" are equal. + * Takes care of calling changed() and updating b_mod_*. + * Careful: may trigger autocommands that reload the buffer. + */ +void changed_lines(lnum, col, lnume, xtra) +linenr_T lnum; /* first line with change */ +colnr_T col; /* column in first line with change */ +linenr_T lnume; /* line below last changed line */ +long xtra; /* number of extra lines (negative when deleting) */ +{ + changed_lines_buf(curbuf, lnum, lnume, xtra); + + if (xtra == 0 && curwin->w_p_diff) { + /* When the number of lines doesn't change then mark_adjust() isn't + * called and other diff buffers still need to be marked for + * displaying. */ + win_T *wp; + linenr_T wlnum; + + for (wp = firstwin; wp != NULL; wp = wp->w_next) + if (wp->w_p_diff && wp != curwin) { + redraw_win_later(wp, VALID); + wlnum = diff_lnum_win(lnum, wp); + if (wlnum > 0) + changed_lines_buf(wp->w_buffer, wlnum, + lnume - lnum + wlnum, 0L); + } + } + + changed_common(lnum, col, lnume, xtra); +} + +static void changed_lines_buf(buf, lnum, lnume, xtra) +buf_T *buf; +linenr_T lnum; /* first line with change */ +linenr_T lnume; /* line below last changed line */ +long xtra; /* number of extra lines (negative when deleting) */ +{ + if (buf->b_mod_set) { + /* find the maximum area that must be redisplayed */ + if (lnum < buf->b_mod_top) + buf->b_mod_top = lnum; + if (lnum < buf->b_mod_bot) { + /* adjust old bot position for xtra lines */ + buf->b_mod_bot += xtra; + if (buf->b_mod_bot < lnum) + buf->b_mod_bot = lnum; + } + if (lnume + xtra > buf->b_mod_bot) + buf->b_mod_bot = lnume + xtra; + buf->b_mod_xlines += xtra; + } else { + /* set the area that must be redisplayed */ + buf->b_mod_set = TRUE; + buf->b_mod_top = lnum; + buf->b_mod_bot = lnume + xtra; + buf->b_mod_xlines = xtra; + } +} + +/* + * Common code for when a change is was made. + * See changed_lines() for the arguments. + * Careful: may trigger autocommands that reload the buffer. + */ +static void changed_common(lnum, col, lnume, xtra) +linenr_T lnum; +colnr_T col; +linenr_T lnume; +long xtra; +{ + win_T *wp; + tabpage_T *tp; + int i; + int cols; + pos_T *p; + int add; + + /* mark the buffer as modified */ + changed(); + + /* set the '. mark */ + if (!cmdmod.keepjumps) { + curbuf->b_last_change.lnum = lnum; + curbuf->b_last_change.col = col; + + /* Create a new entry if a new undo-able change was started or we + * don't have an entry yet. */ + if (curbuf->b_new_change || curbuf->b_changelistlen == 0) { + if (curbuf->b_changelistlen == 0) + add = TRUE; + else { + /* Don't create a new entry when the line number is the same + * as the last one and the column is not too far away. Avoids + * creating many entries for typing "xxxxx". */ + p = &curbuf->b_changelist[curbuf->b_changelistlen - 1]; + if (p->lnum != lnum) + add = TRUE; + else { + cols = comp_textwidth(FALSE); + if (cols == 0) + cols = 79; + add = (p->col + cols < col || col + cols < p->col); + } + } + if (add) { + /* This is the first of a new sequence of undo-able changes + * and it's at some distance of the last change. Use a new + * position in the changelist. */ + curbuf->b_new_change = FALSE; + + if (curbuf->b_changelistlen == JUMPLISTSIZE) { + /* changelist is full: remove oldest entry */ + curbuf->b_changelistlen = JUMPLISTSIZE - 1; + mch_memmove(curbuf->b_changelist, curbuf->b_changelist + 1, + sizeof(pos_T) * (JUMPLISTSIZE - 1)); + FOR_ALL_TAB_WINDOWS(tp, wp) + { + /* Correct position in changelist for other windows on + * this buffer. */ + if (wp->w_buffer == curbuf && wp->w_changelistidx > 0) + --wp->w_changelistidx; + } + } + FOR_ALL_TAB_WINDOWS(tp, wp) + { + /* For other windows, if the position in the changelist is + * at the end it stays at the end. */ + if (wp->w_buffer == curbuf + && wp->w_changelistidx == curbuf->b_changelistlen) + ++wp->w_changelistidx; + } + ++curbuf->b_changelistlen; + } + } + curbuf->b_changelist[curbuf->b_changelistlen - 1] = + curbuf->b_last_change; + /* The current window is always after the last change, so that "g," + * takes you back to it. */ + curwin->w_changelistidx = curbuf->b_changelistlen; + } + + FOR_ALL_TAB_WINDOWS(tp, wp) + { + if (wp->w_buffer == curbuf) { + /* Mark this window to be redrawn later. */ + if (wp->w_redr_type < VALID) + wp->w_redr_type = VALID; + + /* Check if a change in the buffer has invalidated the cached + * values for the cursor. */ + /* + * Update the folds for this window. Can't postpone this, because + * a following operator might work on the whole fold: ">>dd". + */ + foldUpdate(wp, lnum, lnume + xtra - 1); + + /* The change may cause lines above or below the change to become + * included in a fold. Set lnum/lnume to the first/last line that + * might be displayed differently. + * Set w_cline_folded here as an efficient way to update it when + * inserting lines just above a closed fold. */ + i = hasFoldingWin(wp, lnum, &lnum, NULL, FALSE, NULL); + if (wp->w_cursor.lnum == lnum) + wp->w_cline_folded = i; + i = hasFoldingWin(wp, lnume, NULL, &lnume, FALSE, NULL); + if (wp->w_cursor.lnum == lnume) + wp->w_cline_folded = i; + + /* If the changed line is in a range of previously folded lines, + * compare with the first line in that range. */ + if (wp->w_cursor.lnum <= lnum) { + i = find_wl_entry(wp, lnum); + if (i >= 0 && wp->w_cursor.lnum > wp->w_lines[i].wl_lnum) + changed_line_abv_curs_win(wp); + } + + if (wp->w_cursor.lnum > lnum) + changed_line_abv_curs_win(wp); + else if (wp->w_cursor.lnum == lnum && wp->w_cursor.col >= col) + changed_cline_bef_curs_win(wp); + if (wp->w_botline >= lnum) { + /* Assume that botline doesn't change (inserted lines make + * other lines scroll down below botline). */ + approximate_botline_win(wp); + } + + /* Check if any w_lines[] entries have become invalid. + * For entries below the change: Correct the lnums for + * inserted/deleted lines. Makes it possible to stop displaying + * after the change. */ + for (i = 0; i < wp->w_lines_valid; ++i) + if (wp->w_lines[i].wl_valid) { + if (wp->w_lines[i].wl_lnum >= lnum) { + if (wp->w_lines[i].wl_lnum < lnume) { + /* line included in change */ + wp->w_lines[i].wl_valid = FALSE; + } else if (xtra != 0) { + /* line below change */ + wp->w_lines[i].wl_lnum += xtra; + wp->w_lines[i].wl_lastlnum += xtra; + } + } else if (wp->w_lines[i].wl_lastlnum >= lnum) { + /* change somewhere inside this range of folded lines, + * may need to be redrawn */ + wp->w_lines[i].wl_valid = FALSE; + } + } + + /* Take care of side effects for setting w_topline when folds have + * changed. Esp. when the buffer was changed in another window. */ + if (hasAnyFolding(wp)) + set_topline(wp, wp->w_topline); + } + } + + /* Call update_screen() later, which checks out what needs to be redrawn, + * since it notices b_mod_set and then uses b_mod_*. */ + if (must_redraw < VALID) + must_redraw = VALID; + + /* when the cursor line is changed always trigger CursorMoved */ + if (lnum <= curwin->w_cursor.lnum + && lnume + (xtra < 0 ? -xtra : xtra) > curwin->w_cursor.lnum) + last_cursormoved.lnum = 0; +} + +/* + * unchanged() is called when the changed flag must be reset for buffer 'buf' + */ +void unchanged(buf, ff) +buf_T *buf; +int ff; /* also reset 'fileformat' */ +{ + if (buf->b_changed || (ff && file_ff_differs(buf, FALSE))) { + buf->b_changed = 0; + ml_setflags(buf); + if (ff) + save_file_ff(buf); + check_status(buf); + redraw_tabline = TRUE; + need_maketitle = TRUE; /* set window title later */ + } + ++buf->b_changedtick; +} + +/* + * check_status: called when the status bars for the buffer 'buf' + * need to be updated + */ +void check_status(buf) +buf_T *buf; +{ + win_T *wp; + + for (wp = firstwin; wp != NULL; wp = wp->w_next) + if (wp->w_buffer == buf && wp->w_status_height) { + wp->w_redr_status = TRUE; + if (must_redraw < VALID) + must_redraw = VALID; + } +} + +/* + * If the file is readonly, give a warning message with the first change. + * Don't do this for autocommands. + * Don't use emsg(), because it flushes the macro buffer. + * If we have undone all changes b_changed will be FALSE, but "b_did_warn" + * will be TRUE. + * Careful: may trigger autocommands that reload the buffer. + */ +void change_warning(col) +int col; /* column for message; non-zero when in insert + mode and 'showmode' is on */ +{ + static char *w_readonly = N_("W10: Warning: Changing a readonly file"); + + if (curbuf->b_did_warn == FALSE + && curbufIsChanged() == 0 + && !autocmd_busy + && curbuf->b_p_ro) { + ++curbuf_lock; + apply_autocmds(EVENT_FILECHANGEDRO, NULL, NULL, FALSE, curbuf); + --curbuf_lock; + if (!curbuf->b_p_ro) + return; + /* + * Do what msg() does, but with a column offset if the warning should + * be after the mode message. + */ + msg_start(); + if (msg_row == Rows - 1) + msg_col = col; + msg_source(hl_attr(HLF_W)); + MSG_PUTS_ATTR(_(w_readonly), hl_attr(HLF_W) | MSG_HIST); + set_vim_var_string(VV_WARNINGMSG, (char_u *)_(w_readonly), -1); + msg_clr_eos(); + (void)msg_end(); + if (msg_silent == 0 && !silent_mode) { + out_flush(); + ui_delay(1000L, TRUE); /* give the user time to think about it */ + } + curbuf->b_did_warn = TRUE; + redraw_cmdline = FALSE; /* don't redraw and erase the message */ + if (msg_row < Rows - 1) + showmode(); + } +} + +/* + * Ask for a reply from the user, a 'y' or a 'n'. + * No other characters are accepted, the message is repeated until a valid + * reply is entered or CTRL-C is hit. + * If direct is TRUE, don't use vgetc() but ui_inchar(), don't get characters + * from any buffers but directly from the user. + * + * return the 'y' or 'n' + */ +int ask_yesno(str, direct) +char_u *str; +int direct; +{ + int r = ' '; + int save_State = State; + + if (exiting) /* put terminal in raw mode for this question */ + settmode(TMODE_RAW); + ++no_wait_return; +#ifdef USE_ON_FLY_SCROLL + dont_scroll = TRUE; /* disallow scrolling here */ +#endif + State = CONFIRM; /* mouse behaves like with :confirm */ + setmouse(); /* disables mouse for xterm */ + ++no_mapping; + ++allow_keys; /* no mapping here, but recognize keys */ + + while (r != 'y' && r != 'n') { + /* same highlighting as for wait_return */ + smsg_attr(hl_attr(HLF_R), (char_u *)"%s (y/n)?", str); + if (direct) + r = get_keystroke(); + else + r = plain_vgetc(); + if (r == Ctrl_C || r == ESC) + r = 'n'; + msg_putchar(r); /* show what you typed */ + out_flush(); + } + --no_wait_return; + State = save_State; + setmouse(); + --no_mapping; + --allow_keys; + + return r; +} + +/* + * Return TRUE if "c" is a mouse key. + */ +int is_mouse_key(c) +int c; +{ + return c == K_LEFTMOUSE + || c == K_LEFTMOUSE_NM + || c == K_LEFTDRAG + || c == K_LEFTRELEASE + || c == K_LEFTRELEASE_NM + || c == K_MIDDLEMOUSE + || c == K_MIDDLEDRAG + || c == K_MIDDLERELEASE + || c == K_RIGHTMOUSE + || c == K_RIGHTDRAG + || c == K_RIGHTRELEASE + || c == K_MOUSEDOWN + || c == K_MOUSEUP + || c == K_MOUSELEFT + || c == K_MOUSERIGHT + || c == K_X1MOUSE + || c == K_X1DRAG + || c == K_X1RELEASE + || c == K_X2MOUSE + || c == K_X2DRAG + || c == K_X2RELEASE; +} + +/* + * Get a key stroke directly from the user. + * Ignores mouse clicks and scrollbar events, except a click for the left + * button (used at the more prompt). + * Doesn't use vgetc(), because it syncs undo and eats mapped characters. + * Disadvantage: typeahead is ignored. + * Translates the interrupt character for unix to ESC. + */ +int get_keystroke() { + char_u *buf = NULL; + int buflen = 150; + int maxlen; + int len = 0; + int n; + int save_mapped_ctrl_c = mapped_ctrl_c; + int waited = 0; + + mapped_ctrl_c = FALSE; /* mappings are not used here */ + for (;; ) { + cursor_on(); + out_flush(); + + /* Leave some room for check_termcode() to insert a key code into (max + * 5 chars plus NUL). And fix_input_buffer() can triple the number of + * bytes. */ + maxlen = (buflen - 6 - len) / 3; + if (buf == NULL) + buf = alloc(buflen); + else if (maxlen < 10) { + /* Need some more space. This might happen when receiving a long + * escape sequence. */ + buflen += 100; + buf = vim_realloc(buf, buflen); + maxlen = (buflen - 6 - len) / 3; + } + if (buf == NULL) { + do_outofmem_msg((long_u)buflen); + return ESC; /* panic! */ + } + + /* First time: blocking wait. Second time: wait up to 100ms for a + * terminal code to complete. */ + n = ui_inchar(buf + len, maxlen, len == 0 ? -1L : 100L, 0); + if (n > 0) { + /* Replace zero and CSI by a special key code. */ + n = fix_input_buffer(buf + len, n, FALSE); + len += n; + waited = 0; + } else if (len > 0) + ++waited; /* keep track of the waiting time */ + + /* Incomplete termcode and not timed out yet: get more characters */ + if ((n = check_termcode(1, buf, buflen, &len)) < 0 + && (!p_ttimeout || waited * 100L < (p_ttm < 0 ? p_tm : p_ttm))) + continue; + + if (n == KEYLEN_REMOVED) { /* key code removed */ + if (must_redraw != 0 && !need_wait_return && (State & CMDLINE) == 0) { + /* Redrawing was postponed, do it now. */ + update_screen(0); + setcursor(); /* put cursor back where it belongs */ + } + continue; + } + if (n > 0) /* found a termcode: adjust length */ + len = n; + if (len == 0) /* nothing typed yet */ + continue; + + /* Handle modifier and/or special key code. */ + n = buf[0]; + if (n == K_SPECIAL) { + n = TO_SPECIAL(buf[1], buf[2]); + if (buf[1] == KS_MODIFIER + || n == K_IGNORE + || (is_mouse_key(n) && n != K_LEFTMOUSE) + ) { + if (buf[1] == KS_MODIFIER) + mod_mask = buf[2]; + len -= 3; + if (len > 0) + mch_memmove(buf, buf + 3, (size_t)len); + continue; + } + break; + } + if (has_mbyte) { + if (MB_BYTE2LEN(n) > len) + continue; /* more bytes to get */ + buf[len >= buflen ? buflen - 1 : len] = NUL; + n = (*mb_ptr2char)(buf); + } +#ifdef UNIX + if (n == intr_char) + n = ESC; +#endif + break; + } + vim_free(buf); + + mapped_ctrl_c = save_mapped_ctrl_c; + return n; +} + +/* + * Get a number from the user. + * When "mouse_used" is not NULL allow using the mouse. + */ +int get_number(colon, mouse_used) +int colon; /* allow colon to abort */ +int *mouse_used; +{ + int n = 0; + int c; + int typed = 0; + + if (mouse_used != NULL) + *mouse_used = FALSE; + + /* When not printing messages, the user won't know what to type, return a + * zero (as if CR was hit). */ + if (msg_silent != 0) + return 0; + +#ifdef USE_ON_FLY_SCROLL + dont_scroll = TRUE; /* disallow scrolling here */ +#endif + ++no_mapping; + ++allow_keys; /* no mapping here, but recognize keys */ + for (;; ) { + windgoto(msg_row, msg_col); + c = safe_vgetc(); + if (VIM_ISDIGIT(c)) { + n = n * 10 + c - '0'; + msg_putchar(c); + ++typed; + } else if (c == K_DEL || c == K_KDEL || c == K_BS || c == Ctrl_H) { + if (typed > 0) { + MSG_PUTS("\b \b"); + --typed; + } + n /= 10; + } else if (mouse_used != NULL && c == K_LEFTMOUSE) { + *mouse_used = TRUE; + n = mouse_row + 1; + break; + } else if (n == 0 && c == ':' && colon) { + stuffcharReadbuff(':'); + if (!exmode_active) + cmdline_row = msg_row; + skip_redraw = TRUE; /* skip redraw once */ + do_redraw = FALSE; + break; + } else if (c == CAR || c == NL || c == Ctrl_C || c == ESC) + break; + } + --no_mapping; + --allow_keys; + return n; +} + +/* + * Ask the user to enter a number. + * When "mouse_used" is not NULL allow using the mouse and in that case return + * the line number. + */ +int prompt_for_number(mouse_used) +int *mouse_used; +{ + int i; + int save_cmdline_row; + int save_State; + + /* When using ":silent" assume that <CR> was entered. */ + if (mouse_used != NULL) + MSG_PUTS(_("Type number and <Enter> or click with mouse (empty cancels): ")); + else + MSG_PUTS(_("Type number and <Enter> (empty cancels): ")); + + /* Set the state such that text can be selected/copied/pasted and we still + * get mouse events. */ + save_cmdline_row = cmdline_row; + cmdline_row = 0; + save_State = State; + State = CMDLINE; + + i = get_number(TRUE, mouse_used); + if (KeyTyped) { + /* don't call wait_return() now */ + /* msg_putchar('\n'); */ + cmdline_row = msg_row - 1; + need_wait_return = FALSE; + msg_didany = FALSE; + msg_didout = FALSE; + } else + cmdline_row = save_cmdline_row; + State = save_State; + + return i; +} + +void msgmore(n) +long n; +{ + long pn; + + if (global_busy /* no messages now, wait until global is finished */ + || !messaging()) /* 'lazyredraw' set, don't do messages now */ + return; + + /* We don't want to overwrite another important message, but do overwrite + * a previous "more lines" or "fewer lines" message, so that "5dd" and + * then "put" reports the last action. */ + if (keep_msg != NULL && !keep_msg_more) + return; + + if (n > 0) + pn = n; + else + pn = -n; + + if (pn > p_report) { + if (pn == 1) { + if (n > 0) + vim_strncpy(msg_buf, (char_u *)_("1 more line"), + MSG_BUF_LEN - 1); + else + vim_strncpy(msg_buf, (char_u *)_("1 line less"), + MSG_BUF_LEN - 1); + } else { + if (n > 0) + vim_snprintf((char *)msg_buf, MSG_BUF_LEN, + _("%ld more lines"), pn); + else + vim_snprintf((char *)msg_buf, MSG_BUF_LEN, + _("%ld fewer lines"), pn); + } + if (got_int) + vim_strcat(msg_buf, (char_u *)_(" (Interrupted)"), MSG_BUF_LEN); + if (msg(msg_buf)) { + set_keep_msg(msg_buf, 0); + keep_msg_more = TRUE; + } + } +} + +/* + * flush map and typeahead buffers and give a warning for an error + */ +void beep_flush() { + if (emsg_silent == 0) { + flush_buffers(FALSE); + vim_beep(); + } +} + +/* + * give a warning for an error + */ +void vim_beep() { + if (emsg_silent == 0) { + if (p_vb + ) { + out_str(T_VB); + } else { + out_char(BELL); + } + + /* When 'verbose' is set and we are sourcing a script or executing a + * function give the user a hint where the beep comes from. */ + if (vim_strchr(p_debug, 'e') != NULL) { + msg_source(hl_attr(HLF_W)); + msg_attr((char_u *)_("Beep!"), hl_attr(HLF_W)); + } + } +} + +/* + * To get the "real" home directory: + * - get value of $HOME + * For Unix: + * - go to that directory + * - do mch_dirname() to get the real name of that directory. + * This also works with mounts and links. + * Don't do this for MS-DOS, it will change the "current dir" for a drive. + */ +static char_u *homedir = NULL; + +void init_homedir() { + char_u *var; + + /* In case we are called a second time (when 'encoding' changes). */ + vim_free(homedir); + homedir = NULL; + + var = mch_getenv((char_u *)"HOME"); + + if (var != NULL && *var == NUL) /* empty is same as not set */ + var = NULL; + + + if (var != NULL) { +#ifdef UNIX + /* + * Change to the directory and get the actual path. This resolves + * links. Don't do it when we can't return. + */ + if (mch_dirname(NameBuff, MAXPATHL) == OK + && mch_chdir((char *)NameBuff) == 0) { + if (!mch_chdir((char *)var) && mch_dirname(IObuff, IOSIZE) == OK) + var = IObuff; + if (mch_chdir((char *)NameBuff) != 0) + EMSG(_(e_prev_dir)); + } +#endif + homedir = vim_strsave(var); + } +} + +#if defined(EXITFREE) || defined(PROTO) +void free_homedir() { + vim_free(homedir); +} + +void free_users() { + ga_clear_strings(&ga_users); +} + +#endif + +/* + * Call expand_env() and store the result in an allocated string. + * This is not very memory efficient, this expects the result to be freed + * again soon. + */ +char_u * expand_env_save(src) +char_u *src; +{ + return expand_env_save_opt(src, FALSE); +} + +/* + * Idem, but when "one" is TRUE handle the string as one file name, only + * expand "~" at the start. + */ +char_u * expand_env_save_opt(src, one) +char_u *src; +int one; +{ + char_u *p; + + p = alloc(MAXPATHL); + if (p != NULL) + expand_env_esc(src, p, MAXPATHL, FALSE, one, NULL); + return p; +} + +/* + * Expand environment variable with path name. + * "~/" is also expanded, using $HOME. For Unix "~user/" is expanded. + * Skips over "\ ", "\~" and "\$" (not for Win32 though). + * If anything fails no expansion is done and dst equals src. + */ +void expand_env(src, dst, dstlen) +char_u *src; /* input string e.g. "$HOME/vim.hlp" */ +char_u *dst; /* where to put the result */ +int dstlen; /* maximum length of the result */ +{ + expand_env_esc(src, dst, dstlen, FALSE, FALSE, NULL); +} + +void expand_env_esc(srcp, dst, dstlen, esc, one, startstr) +char_u *srcp; /* input string e.g. "$HOME/vim.hlp" */ +char_u *dst; /* where to put the result */ +int dstlen; /* maximum length of the result */ +int esc; /* escape spaces in expanded variables */ +int one; /* "srcp" is one file name */ +char_u *startstr; /* start again after this (can be NULL) */ +{ + char_u *src; + char_u *tail; + int c; + char_u *var; + int copy_char; + int mustfree; /* var was allocated, need to free it later */ + int at_start = TRUE; /* at start of a name */ + int startstr_len = 0; + + if (startstr != NULL) + startstr_len = (int)STRLEN(startstr); + + src = skipwhite(srcp); + --dstlen; /* leave one char space for "\," */ + while (*src && dstlen > 0) { + copy_char = TRUE; + if ((*src == '$' + ) + || (*src == '~' && at_start)) { + mustfree = FALSE; + + /* + * The variable name is copied into dst temporarily, because it may + * be a string in read-only memory and a NUL needs to be appended. + */ + if (*src != '~') { /* environment var */ + tail = src + 1; + var = dst; + c = dstlen - 1; + +#ifdef UNIX + /* Unix has ${var-name} type environment vars */ + if (*tail == '{' && !vim_isIDc('{')) { + tail++; /* ignore '{' */ + while (c-- > 0 && *tail && *tail != '}') + *var++ = *tail++; + } else +#endif + { + while (c-- > 0 && *tail != NUL && ((vim_isIDc(*tail)) + )) { + *var++ = *tail++; + } + } + +#if defined(MSDOS) || defined(MSWIN) || defined(OS2) || defined(UNIX) +# ifdef UNIX + if (src[1] == '{' && *tail != '}') +# else + if (*src == '%' && *tail != '%') +# endif + var = NULL; + else { +# ifdef UNIX + if (src[1] == '{') +# else + if (*src == '%') +#endif + ++tail; +#endif + *var = NUL; + var = vim_getenv(dst, &mustfree); +#if defined(MSDOS) || defined(MSWIN) || defined(OS2) || defined(UNIX) + } +#endif + } + /* home directory */ + else if ( src[1] == NUL + || vim_ispathsep(src[1]) + || vim_strchr((char_u *)" ,\t\n", src[1]) != NULL) { + var = homedir; + tail = src + 1; + } else { /* user directory */ +#if defined(UNIX) || (defined(VMS) && defined(USER_HOME)) + /* + * Copy ~user to dst[], so we can put a NUL after it. + */ + tail = src; + var = dst; + c = dstlen - 1; + while ( c-- > 0 + && *tail + && vim_isfilec(*tail) + && !vim_ispathsep(*tail)) + *var++ = *tail++; + *var = NUL; +# ifdef UNIX + /* + * If the system supports getpwnam(), use it. + * Otherwise, or if getpwnam() fails, the shell is used to + * expand ~user. This is slower and may fail if the shell + * does not support ~user (old versions of /bin/sh). + */ +# if defined(HAVE_GETPWNAM) && defined(HAVE_PWD_H) + { + struct passwd *pw; + + /* Note: memory allocated by getpwnam() is never freed. + * Calling endpwent() apparently doesn't help. */ + pw = getpwnam((char *)dst + 1); + if (pw != NULL) + var = (char_u *)pw->pw_dir; + else + var = NULL; + } + if (var == NULL) +# endif + { + expand_T xpc; + + ExpandInit(&xpc); + xpc.xp_context = EXPAND_FILES; + var = ExpandOne(&xpc, dst, NULL, + WILD_ADD_SLASH|WILD_SILENT, WILD_EXPAND_FREE); + mustfree = TRUE; + } + +# else /* !UNIX, thus VMS */ + /* + * USER_HOME is a comma-separated list of + * directories to search for the user account in. + */ + { + char_u test[MAXPATHL], paths[MAXPATHL]; + char_u *path, *next_path, *ptr; + struct stat st; + + STRCPY(paths, USER_HOME); + next_path = paths; + while (*next_path) { + for (path = next_path; *next_path && *next_path != ','; + next_path++) ; + if (*next_path) + *next_path++ = NUL; + STRCPY(test, path); + STRCAT(test, "/"); + STRCAT(test, dst + 1); + if (mch_stat(test, &st) == 0) { + var = alloc(STRLEN(test) + 1); + STRCPY(var, test); + mustfree = TRUE; + break; + } + } + } +# endif /* UNIX */ +#else + /* cannot expand user's home directory, so don't try */ + var = NULL; + tail = (char_u *)""; /* for gcc */ +#endif /* UNIX || VMS */ + } + +#ifdef BACKSLASH_IN_FILENAME + /* If 'shellslash' is set change backslashes to forward slashes. + * Can't use slash_adjust(), p_ssl may be set temporarily. */ + if (p_ssl && var != NULL && vim_strchr(var, '\\') != NULL) { + char_u *p = vim_strsave(var); + + if (p != NULL) { + if (mustfree) + vim_free(var); + var = p; + mustfree = TRUE; + forward_slash(var); + } + } +#endif + + /* If "var" contains white space, escape it with a backslash. + * Required for ":e ~/tt" when $HOME includes a space. */ + if (esc && var != NULL && vim_strpbrk(var, (char_u *)" \t") != NULL) { + char_u *p = vim_strsave_escaped(var, (char_u *)" \t"); + + if (p != NULL) { + if (mustfree) + vim_free(var); + var = p; + mustfree = TRUE; + } + } + + if (var != NULL && *var != NUL + && (STRLEN(var) + STRLEN(tail) + 1 < (unsigned)dstlen)) { + STRCPY(dst, var); + dstlen -= (int)STRLEN(var); + c = (int)STRLEN(var); + /* if var[] ends in a path separator and tail[] starts + * with it, skip a character */ + if (*var != NUL && after_pathsep(dst, dst + c) +#if defined(BACKSLASH_IN_FILENAME) || defined(AMIGA) + && dst[-1] != ':' +#endif + && vim_ispathsep(*tail)) + ++tail; + dst += c; + src = tail; + copy_char = FALSE; + } + if (mustfree) + vim_free(var); + } + + if (copy_char) { /* copy at least one char */ + /* + * Recognize the start of a new name, for '~'. + * Don't do this when "one" is TRUE, to avoid expanding "~" in + * ":edit foo ~ foo". + */ + at_start = FALSE; + if (src[0] == '\\' && src[1] != NUL) { + *dst++ = *src++; + --dstlen; + } else if ((src[0] == ' ' || src[0] == ',') && !one) + at_start = TRUE; + *dst++ = *src++; + --dstlen; + + if (startstr != NULL && src - startstr_len >= srcp + && STRNCMP(src - startstr_len, startstr, startstr_len) == 0) + at_start = TRUE; + } + } + *dst = NUL; +} + +/* + * Vim's version of getenv(). + * Special handling of $HOME, $VIM and $VIMRUNTIME. + * Also does ACP to 'enc' conversion for Win32. + * "mustfree" is set to TRUE when returned is allocated, it must be + * initialized to FALSE by the caller. + */ +char_u * vim_getenv(name, mustfree) +char_u *name; +int *mustfree; +{ + char_u *p; + char_u *pend; + int vimruntime; + + + p = mch_getenv(name); + if (p != NULL && *p == NUL) /* empty is the same as not set */ + p = NULL; + + if (p != NULL) { + return p; + } + + vimruntime = (STRCMP(name, "VIMRUNTIME") == 0); + if (!vimruntime && STRCMP(name, "VIM") != 0) + return NULL; + + /* + * When expanding $VIMRUNTIME fails, try using $VIM/vim<version> or $VIM. + * Don't do this when default_vimruntime_dir is non-empty. + */ + if (vimruntime +#ifdef HAVE_PATHDEF + && *default_vimruntime_dir == NUL +#endif + ) { + p = mch_getenv((char_u *)"VIM"); + if (p != NULL && *p == NUL) /* empty is the same as not set */ + p = NULL; + if (p != NULL) { + p = vim_version_dir(p); + if (p != NULL) + *mustfree = TRUE; + else + p = mch_getenv((char_u *)"VIM"); + + } + } + + /* + * When expanding $VIM or $VIMRUNTIME fails, try using: + * - the directory name from 'helpfile' (unless it contains '$') + * - the executable name from argv[0] + */ + if (p == NULL) { + if (p_hf != NULL && vim_strchr(p_hf, '$') == NULL) + p = p_hf; +#ifdef USE_EXE_NAME + /* + * Use the name of the executable, obtained from argv[0]. + */ + else + p = exe_name; +#endif + if (p != NULL) { + /* remove the file name */ + pend = gettail(p); + + /* remove "doc/" from 'helpfile', if present */ + if (p == p_hf) + pend = remove_tail(p, pend, (char_u *)"doc"); + +#ifdef USE_EXE_NAME + /* remove "src/" from exe_name, if present */ + if (p == exe_name) + pend = remove_tail(p, pend, (char_u *)"src"); +#endif + + /* for $VIM, remove "runtime/" or "vim54/", if present */ + if (!vimruntime) { + pend = remove_tail(p, pend, (char_u *)RUNTIME_DIRNAME); + pend = remove_tail(p, pend, (char_u *)VIM_VERSION_NODOT); + } + + /* remove trailing path separator */ + /* With MacOS path (with colons) the final colon is required */ + /* to avoid confusion between absolute and relative path */ + if (pend > p && after_pathsep(p, pend)) + --pend; + + /* check that the result is a directory name */ + p = vim_strnsave(p, (int)(pend - p)); + + if (p != NULL && !mch_isdir(p)) { + vim_free(p); + p = NULL; + } else { +#ifdef USE_EXE_NAME + /* may add "/vim54" or "/runtime" if it exists */ + if (vimruntime && (pend = vim_version_dir(p)) != NULL) { + vim_free(p); + p = pend; + } +#endif + *mustfree = TRUE; + } + } + } + +#ifdef HAVE_PATHDEF + /* When there is a pathdef.c file we can use default_vim_dir and + * default_vimruntime_dir */ + if (p == NULL) { + /* Only use default_vimruntime_dir when it is not empty */ + if (vimruntime && *default_vimruntime_dir != NUL) { + p = default_vimruntime_dir; + *mustfree = FALSE; + } else if (*default_vim_dir != NUL) { + if (vimruntime && (p = vim_version_dir(default_vim_dir)) != NULL) + *mustfree = TRUE; + else { + p = default_vim_dir; + *mustfree = FALSE; + } + } + } +#endif + + /* + * Set the environment variable, so that the new value can be found fast + * next time, and others can also use it (e.g. Perl). + */ + if (p != NULL) { + if (vimruntime) { + vim_setenv((char_u *)"VIMRUNTIME", p); + didset_vimruntime = TRUE; + } else { + vim_setenv((char_u *)"VIM", p); + didset_vim = TRUE; + } + } + return p; +} + +/* + * Check if the directory "vimdir/<version>" or "vimdir/runtime" exists. + * Return NULL if not, return its name in allocated memory otherwise. + */ +static char_u * vim_version_dir(vimdir) +char_u *vimdir; +{ + char_u *p; + + if (vimdir == NULL || *vimdir == NUL) + return NULL; + p = concat_fnames(vimdir, (char_u *)VIM_VERSION_NODOT, TRUE); + if (p != NULL && mch_isdir(p)) + return p; + vim_free(p); + p = concat_fnames(vimdir, (char_u *)RUNTIME_DIRNAME, TRUE); + if (p != NULL && mch_isdir(p)) + return p; + vim_free(p); + return NULL; +} + +/* + * If the string between "p" and "pend" ends in "name/", return "pend" minus + * the length of "name/". Otherwise return "pend". + */ +static char_u * remove_tail(p, pend, name) +char_u *p; +char_u *pend; +char_u *name; +{ + int len = (int)STRLEN(name) + 1; + char_u *newend = pend - len; + + if (newend >= p + && fnamencmp(newend, name, len - 1) == 0 + && (newend == p || after_pathsep(p, newend))) + return newend; + return pend; +} + +/* + * Our portable version of setenv. + */ +void vim_setenv(name, val) +char_u *name; +char_u *val; +{ +#ifdef HAVE_SETENV + mch_setenv((char *)name, (char *)val, 1); +#else + char_u *envbuf; + + /* + * Putenv does not copy the string, it has to remain + * valid. The allocated memory will never be freed. + */ + envbuf = alloc((unsigned)(STRLEN(name) + STRLEN(val) + 2)); + if (envbuf != NULL) { + sprintf((char *)envbuf, "%s=%s", name, val); + putenv((char *)envbuf); + } +#endif + /* + * When setting $VIMRUNTIME adjust the directory to find message + * translations to $VIMRUNTIME/lang. + */ + if (*val != NUL && STRICMP(name, "VIMRUNTIME") == 0) { + char_u *buf = concat_str(val, (char_u *)"/lang"); + + if (buf != NULL) { + bindtextdomain(VIMPACKAGE, (char *)buf); + vim_free(buf); + } + } +} + +/* + * Function given to ExpandGeneric() to obtain an environment variable name. + */ +char_u * get_env_name(xp, idx) +expand_T *xp UNUSED; +int idx; +{ +# if defined(AMIGA) || defined(__MRC__) || defined(__SC__) + /* + * No environ[] on the Amiga and on the Mac (using MPW). + */ + return NULL; +# else +# ifndef __WIN32__ + /* Borland C++ 5.2 has this in a header file. */ + extern char **environ; +# endif +# define ENVNAMELEN 100 + static char_u name[ENVNAMELEN]; + char_u *str; + int n; + + str = (char_u *)environ[idx]; + if (str == NULL) + return NULL; + + for (n = 0; n < ENVNAMELEN - 1; ++n) { + if (str[n] == '=' || str[n] == NUL) + break; + name[n] = str[n]; + } + name[n] = NUL; + return name; +# endif +} + +/* + * Find all user names for user completion. + * Done only once and then cached. + */ +static void init_users() { + static int lazy_init_done = FALSE; + + if (lazy_init_done) + return; + + lazy_init_done = TRUE; + ga_init2(&ga_users, sizeof(char_u *), 20); + +# if defined(HAVE_GETPWENT) && defined(HAVE_PWD_H) + { + char_u* user; + struct passwd* pw; + + setpwent(); + while ((pw = getpwent()) != NULL) + /* pw->pw_name shouldn't be NULL but just in case... */ + if (pw->pw_name != NULL) { + if (ga_grow(&ga_users, 1) == FAIL) + break; + user = vim_strsave((char_u*)pw->pw_name); + if (user == NULL) + break; + ((char_u **)(ga_users.ga_data))[ga_users.ga_len++] = user; + } + endpwent(); + } +# endif +} + +/* + * Function given to ExpandGeneric() to obtain an user names. + */ +char_u* get_users(xp, idx) +expand_T *xp UNUSED; +int idx; +{ + init_users(); + if (idx < ga_users.ga_len) + return ((char_u **)ga_users.ga_data)[idx]; + return NULL; +} + +/* + * Check whether name matches a user name. Return: + * 0 if name does not match any user name. + * 1 if name partially matches the beginning of a user name. + * 2 is name fully matches a user name. + */ +int match_user(name) +char_u* name; +{ + int i; + int n = (int)STRLEN(name); + int result = 0; + + init_users(); + for (i = 0; i < ga_users.ga_len; i++) { + if (STRCMP(((char_u **)ga_users.ga_data)[i], name) == 0) + return 2; /* full match */ + if (STRNCMP(((char_u **)ga_users.ga_data)[i], name, n) == 0) + result = 1; /* partial match */ + } + return result; +} + +/* + * Replace home directory by "~" in each space or comma separated file name in + * 'src'. + * If anything fails (except when out of space) dst equals src. + */ +void home_replace(buf, src, dst, dstlen, one) +buf_T *buf; /* when not NULL, check for help files */ +char_u *src; /* input file name */ +char_u *dst; /* where to put the result */ +int dstlen; /* maximum length of the result */ +int one; /* if TRUE, only replace one file name, include + spaces and commas in the file name. */ +{ + size_t dirlen = 0, envlen = 0; + size_t len; + char_u *homedir_env, *homedir_env_orig; + char_u *p; + + if (src == NULL) { + *dst = NUL; + return; + } + + /* + * If the file is a help file, remove the path completely. + */ + if (buf != NULL && buf->b_help) { + STRCPY(dst, gettail(src)); + return; + } + + /* + * We check both the value of the $HOME environment variable and the + * "real" home directory. + */ + if (homedir != NULL) + dirlen = STRLEN(homedir); + + homedir_env_orig = homedir_env = mch_getenv((char_u *)"HOME"); + /* Empty is the same as not set. */ + if (homedir_env != NULL && *homedir_env == NUL) + homedir_env = NULL; + + if (homedir_env != NULL && vim_strchr(homedir_env, '~') != NULL) { + int usedlen = 0; + int flen; + char_u *fbuf = NULL; + + flen = (int)STRLEN(homedir_env); + (void)modify_fname((char_u *)":p", &usedlen, + &homedir_env, &fbuf, &flen); + flen = (int)STRLEN(homedir_env); + if (flen > 0 && vim_ispathsep(homedir_env[flen - 1])) + /* Remove the trailing / that is added to a directory. */ + homedir_env[flen - 1] = NUL; + } + + if (homedir_env != NULL) + envlen = STRLEN(homedir_env); + + if (!one) + src = skipwhite(src); + while (*src && dstlen > 0) { + /* + * Here we are at the beginning of a file name. + * First, check to see if the beginning of the file name matches + * $HOME or the "real" home directory. Check that there is a '/' + * after the match (so that if e.g. the file is "/home/pieter/bla", + * and the home directory is "/home/piet", the file does not end up + * as "~er/bla" (which would seem to indicate the file "bla" in user + * er's home directory)). + */ + p = homedir; + len = dirlen; + for (;; ) { + if ( len + && fnamencmp(src, p, len) == 0 + && (vim_ispathsep(src[len]) + || (!one && (src[len] == ',' || src[len] == ' ')) + || src[len] == NUL)) { + src += len; + if (--dstlen > 0) + *dst++ = '~'; + + /* + * If it's just the home directory, add "/". + */ + if (!vim_ispathsep(src[0]) && --dstlen > 0) + *dst++ = '/'; + break; + } + if (p == homedir_env) + break; + p = homedir_env; + len = envlen; + } + + /* if (!one) skip to separator: space or comma */ + while (*src && (one || (*src != ',' && *src != ' ')) && --dstlen > 0) + *dst++ = *src++; + /* skip separator */ + while ((*src == ' ' || *src == ',') && --dstlen > 0) + *dst++ = *src++; + } + /* if (dstlen == 0) out of space, what to do??? */ + + *dst = NUL; + + if (homedir_env != homedir_env_orig) + vim_free(homedir_env); +} + +/* + * Like home_replace, store the replaced string in allocated memory. + * When something fails, NULL is returned. + */ +char_u * home_replace_save(buf, src) +buf_T *buf; /* when not NULL, check for help files */ +char_u *src; /* input file name */ +{ + char_u *dst; + unsigned len; + + len = 3; /* space for "~/" and trailing NUL */ + if (src != NULL) /* just in case */ + len += (unsigned)STRLEN(src); + dst = alloc(len); + if (dst != NULL) + home_replace(buf, src, dst, len, TRUE); + return dst; +} + +/* + * Compare two file names and return: + * FPC_SAME if they both exist and are the same file. + * FPC_SAMEX if they both don't exist and have the same file name. + * FPC_DIFF if they both exist and are different files. + * FPC_NOTX if they both don't exist. + * FPC_DIFFX if one of them doesn't exist. + * For the first name environment variables are expanded + */ +int fullpathcmp(s1, s2, checkname) +char_u *s1, *s2; +int checkname; /* when both don't exist, check file names */ +{ +#ifdef UNIX + char_u exp1[MAXPATHL]; + char_u full1[MAXPATHL]; + char_u full2[MAXPATHL]; + struct stat st1, st2; + int r1, r2; + + expand_env(s1, exp1, MAXPATHL); + r1 = mch_stat((char *)exp1, &st1); + r2 = mch_stat((char *)s2, &st2); + if (r1 != 0 && r2 != 0) { + /* if mch_stat() doesn't work, may compare the names */ + if (checkname) { + if (fnamecmp(exp1, s2) == 0) + return FPC_SAMEX; + r1 = vim_FullName(exp1, full1, MAXPATHL, FALSE); + r2 = vim_FullName(s2, full2, MAXPATHL, FALSE); + if (r1 == OK && r2 == OK && fnamecmp(full1, full2) == 0) + return FPC_SAMEX; + } + return FPC_NOTX; + } + if (r1 != 0 || r2 != 0) + return FPC_DIFFX; + if (st1.st_dev == st2.st_dev && st1.st_ino == st2.st_ino) + return FPC_SAME; + return FPC_DIFF; +#else + char_u *exp1; /* expanded s1 */ + char_u *full1; /* full path of s1 */ + char_u *full2; /* full path of s2 */ + int retval = FPC_DIFF; + int r1, r2; + + /* allocate one buffer to store three paths (alloc()/free() is slow!) */ + if ((exp1 = alloc(MAXPATHL * 3)) != NULL) { + full1 = exp1 + MAXPATHL; + full2 = full1 + MAXPATHL; + + expand_env(s1, exp1, MAXPATHL); + r1 = vim_FullName(exp1, full1, MAXPATHL, FALSE); + r2 = vim_FullName(s2, full2, MAXPATHL, FALSE); + + /* If vim_FullName() fails, the file probably doesn't exist. */ + if (r1 != OK && r2 != OK) { + if (checkname && fnamecmp(exp1, s2) == 0) + retval = FPC_SAMEX; + else + retval = FPC_NOTX; + } else if (r1 != OK || r2 != OK) + retval = FPC_DIFFX; + else if (fnamecmp(full1, full2)) + retval = FPC_DIFF; + else + retval = FPC_SAME; + vim_free(exp1); + } + return retval; +#endif +} + +/* + * Get the tail of a path: the file name. + * When the path ends in a path separator the tail is the NUL after it. + * Fail safe: never returns NULL. + */ +char_u * gettail(fname) +char_u *fname; +{ + char_u *p1, *p2; + + if (fname == NULL) + return (char_u *)""; + for (p1 = p2 = get_past_head(fname); *p2; ) { /* find last part of path */ + if (vim_ispathsep_nocolon(*p2)) + p1 = p2 + 1; + mb_ptr_adv(p2); + } + return p1; +} + +static char_u *gettail_dir __ARGS((char_u *fname)); + +/* + * Return the end of the directory name, on the first path + * separator: + * "/path/file", "/path/dir/", "/path//dir", "/file" + * ^ ^ ^ ^ + */ +static char_u * gettail_dir(fname) +char_u *fname; +{ + char_u *dir_end = fname; + char_u *next_dir_end = fname; + int look_for_sep = TRUE; + char_u *p; + + for (p = fname; *p != NUL; ) { + if (vim_ispathsep(*p)) { + if (look_for_sep) { + next_dir_end = p; + look_for_sep = FALSE; + } + } else { + if (!look_for_sep) + dir_end = next_dir_end; + look_for_sep = TRUE; + } + mb_ptr_adv(p); + } + return dir_end; +} + +/* + * Get pointer to tail of "fname", including path separators. Putting a NUL + * here leaves the directory name. Takes care of "c:/" and "//". + * Always returns a valid pointer. + */ +char_u * gettail_sep(fname) +char_u *fname; +{ + char_u *p; + char_u *t; + + p = get_past_head(fname); /* don't remove the '/' from "c:/file" */ + t = gettail(fname); + while (t > p && after_pathsep(fname, t)) + --t; + return t; +} + +/* + * get the next path component (just after the next path separator). + */ +char_u * getnextcomp(fname) +char_u *fname; +{ + while (*fname && !vim_ispathsep(*fname)) + mb_ptr_adv(fname); + if (*fname) + ++fname; + return fname; +} + +/* + * Get a pointer to one character past the head of a path name. + * Unix: after "/"; DOS: after "c:\"; Amiga: after "disk:/"; Mac: no head. + * If there is no head, path is returned. + */ +char_u * get_past_head(path) +char_u *path; +{ + char_u *retval; + + retval = path; + + while (vim_ispathsep(*retval)) + ++retval; + + return retval; +} + +/* + * Return TRUE if 'c' is a path separator. + * Note that for MS-Windows this includes the colon. + */ +int vim_ispathsep(c) +int c; +{ +#ifdef UNIX + return c == '/'; /* UNIX has ':' inside file names */ +#else +# ifdef BACKSLASH_IN_FILENAME + return c == ':' || c == '/' || c == '\\'; +# else + return c == ':' || c == '/'; +# endif +#endif +} + +/* + * Like vim_ispathsep(c), but exclude the colon for MS-Windows. + */ +int vim_ispathsep_nocolon(c) +int c; +{ + return vim_ispathsep(c) +#ifdef BACKSLASH_IN_FILENAME + && c != ':' +#endif + ; +} + +/* + * return TRUE if 'c' is a path list separator. + */ +int vim_ispathlistsep(c) +int c; +{ +#ifdef UNIX + return c == ':'; +#else + return c == ';'; /* might not be right for every system... */ +#endif +} + +#if defined(FEAT_GUI_TABLINE) || defined(FEAT_WINDOWS) \ + || defined(FEAT_EVAL) || defined(PROTO) +/* + * Shorten the path of a file from "~/foo/../.bar/fname" to "~/f/../.b/fname" + * It's done in-place. + */ +void shorten_dir(str) +char_u *str; +{ + char_u *tail, *s, *d; + int skip = FALSE; + + tail = gettail(str); + d = str; + for (s = str;; ++s) { + if (s >= tail) { /* copy the whole tail */ + *d++ = *s; + if (*s == NUL) + break; + } else if (vim_ispathsep(*s)) { /* copy '/' and next char */ + *d++ = *s; + skip = FALSE; + } else if (!skip) { + *d++ = *s; /* copy next char */ + if (*s != '~' && *s != '.') /* and leading "~" and "." */ + skip = TRUE; + if (has_mbyte) { + int l = mb_ptr2len(s); + + while (--l > 0) + *d++ = *++s; + } + } + } +} +#endif + +/* + * Return TRUE if the directory of "fname" exists, FALSE otherwise. + * Also returns TRUE if there is no directory name. + * "fname" must be writable!. + */ +int dir_of_file_exists(fname) +char_u *fname; +{ + char_u *p; + int c; + int retval; + + p = gettail_sep(fname); + if (p == fname) + return TRUE; + c = *p; + *p = NUL; + retval = mch_isdir(fname); + *p = c; + return retval; +} + +/* + * Versions of fnamecmp() and fnamencmp() that handle '/' and '\' equally + * and deal with 'fileignorecase'. + */ +int vim_fnamecmp(x, y) +char_u *x, *y; +{ +#ifdef BACKSLASH_IN_FILENAME + return vim_fnamencmp(x, y, MAXPATHL); +#else + if (p_fic) + return MB_STRICMP(x, y); + return STRCMP(x, y); +#endif +} + +int vim_fnamencmp(x, y, len) +char_u *x, *y; +size_t len; +{ +#ifdef BACKSLASH_IN_FILENAME + char_u *px = x; + char_u *py = y; + int cx = NUL; + int cy = NUL; + + while (len > 0) { + cx = PTR2CHAR(px); + cy = PTR2CHAR(py); + if (cx == NUL || cy == NUL + || ((p_fic ? MB_TOLOWER(cx) != MB_TOLOWER(cy) : cx != cy) + && !(cx == '/' && cy == '\\') + && !(cx == '\\' && cy == '/'))) + break; + len -= MB_PTR2LEN(px); + px += MB_PTR2LEN(px); + py += MB_PTR2LEN(py); + } + if (len == 0) + return 0; + return cx - cy; +#else + if (p_fic) + return MB_STRNICMP(x, y, len); + return STRNCMP(x, y, len); +#endif +} + +/* + * Concatenate file names fname1 and fname2 into allocated memory. + * Only add a '/' or '\\' when 'sep' is TRUE and it is necessary. + */ +char_u * concat_fnames(fname1, fname2, sep) +char_u *fname1; +char_u *fname2; +int sep; +{ + char_u *dest; + + dest = alloc((unsigned)(STRLEN(fname1) + STRLEN(fname2) + 3)); + if (dest != NULL) { + STRCPY(dest, fname1); + if (sep) + add_pathsep(dest); + STRCAT(dest, fname2); + } + return dest; +} + +/* + * Concatenate two strings and return the result in allocated memory. + * Returns NULL when out of memory. + */ +char_u * concat_str(str1, str2) +char_u *str1; +char_u *str2; +{ + char_u *dest; + size_t l = STRLEN(str1); + + dest = alloc((unsigned)(l + STRLEN(str2) + 1L)); + if (dest != NULL) { + STRCPY(dest, str1); + STRCPY(dest + l, str2); + } + return dest; +} + +/* + * Add a path separator to a file name, unless it already ends in a path + * separator. + */ +void add_pathsep(p) +char_u *p; +{ + if (*p != NUL && !after_pathsep(p, p + STRLEN(p))) + STRCAT(p, PATHSEPSTR); +} + +/* + * FullName_save - Make an allocated copy of a full file name. + * Returns NULL when out of memory. + */ +char_u * FullName_save(fname, force) +char_u *fname; +int force; /* force expansion, even when it already looks + * like a full path name */ +{ + char_u *buf; + char_u *new_fname = NULL; + + if (fname == NULL) + return NULL; + + buf = alloc((unsigned)MAXPATHL); + if (buf != NULL) { + if (vim_FullName(fname, buf, MAXPATHL, force) != FAIL) + new_fname = vim_strsave(buf); + else + new_fname = vim_strsave(fname); + vim_free(buf); + } + return new_fname; +} + + +static char_u *skip_string __ARGS((char_u *p)); +static pos_T *ind_find_start_comment __ARGS((void)); + +/* + * Find the start of a comment, not knowing if we are in a comment right now. + * Search starts at w_cursor.lnum and goes backwards. + */ +static pos_T * ind_find_start_comment() { /* XXX */ + return find_start_comment(curbuf->b_ind_maxcomment); +} + +pos_T * find_start_comment(ind_maxcomment) /* XXX */ +int ind_maxcomment; +{ + pos_T *pos; + char_u *line; + char_u *p; + int cur_maxcomment = ind_maxcomment; + + for (;; ) { + pos = findmatchlimit(NULL, '*', FM_BACKWARD, cur_maxcomment); + if (pos == NULL) + break; + + /* + * Check if the comment start we found is inside a string. + * If it is then restrict the search to below this line and try again. + */ + line = ml_get(pos->lnum); + for (p = line; *p && (colnr_T)(p - line) < pos->col; ++p) + p = skip_string(p); + if ((colnr_T)(p - line) <= pos->col) + break; + cur_maxcomment = curwin->w_cursor.lnum - pos->lnum - 1; + if (cur_maxcomment <= 0) { + pos = NULL; + break; + } + } + return pos; +} + +/* + * Skip to the end of a "string" and a 'c' character. + * If there is no string or character, return argument unmodified. + */ +static char_u * skip_string(p) +char_u *p; +{ + int i; + + /* + * We loop, because strings may be concatenated: "date""time". + */ + for (;; ++p) { + if (p[0] == '\'') { /* 'c' or '\n' or '\000' */ + if (!p[1]) /* ' at end of line */ + break; + i = 2; + if (p[1] == '\\') { /* '\n' or '\000' */ + ++i; + while (vim_isdigit(p[i - 1])) /* '\000' */ + ++i; + } + if (p[i] == '\'') { /* check for trailing ' */ + p += i; + continue; + } + } else if (p[0] == '"') { /* start of string */ + for (++p; p[0]; ++p) { + if (p[0] == '\\' && p[1] != NUL) + ++p; + else if (p[0] == '"') /* end of string */ + break; + } + if (p[0] == '"') + continue; + } + break; /* no string found */ + } + if (!*p) + --p; /* backup from NUL */ + return p; +} + + +/* + * Do C or expression indenting on the current line. + */ +void do_c_expr_indent() { + if (*curbuf->b_p_inde != NUL) + fixthisline(get_expr_indent); + else + fixthisline(get_c_indent); +} + +/* + * Functions for C-indenting. + * Most of this originally comes from Eric Fischer. + */ +/* + * Below "XXX" means that this function may unlock the current line. + */ + +static char_u *cin_skipcomment __ARGS((char_u *)); +static int cin_nocode __ARGS((char_u *)); +static pos_T *find_line_comment __ARGS((void)); +static int cin_islabel_skip __ARGS((char_u **)); +static int cin_isdefault __ARGS((char_u *)); +static char_u *after_label __ARGS((char_u *l)); +static int get_indent_nolabel __ARGS((linenr_T lnum)); +static int skip_label __ARGS((linenr_T, char_u **pp)); +static int cin_first_id_amount __ARGS((void)); +static int cin_get_equal_amount __ARGS((linenr_T lnum)); +static int cin_ispreproc __ARGS((char_u *)); +static int cin_ispreproc_cont __ARGS((char_u **pp, linenr_T *lnump)); +static int cin_iscomment __ARGS((char_u *)); +static int cin_islinecomment __ARGS((char_u *)); +static int cin_isterminated __ARGS((char_u *, int, int)); +static int cin_isinit __ARGS((void)); +static int cin_isfuncdecl __ARGS((char_u **, linenr_T, linenr_T)); +static int cin_isif __ARGS((char_u *)); +static int cin_iselse __ARGS((char_u *)); +static int cin_isdo __ARGS((char_u *)); +static int cin_iswhileofdo __ARGS((char_u *, linenr_T)); +static int cin_is_if_for_while_before_offset __ARGS((char_u *line, int *poffset)); +static int cin_iswhileofdo_end __ARGS((int terminated)); +static int cin_isbreak __ARGS((char_u *)); +static int cin_is_cpp_baseclass __ARGS((colnr_T *col)); +static int get_baseclass_amount __ARGS((int col)); +static int cin_ends_in __ARGS((char_u *, char_u *, char_u *)); +static int cin_starts_with __ARGS((char_u *s, char *word)); +static int cin_skip2pos __ARGS((pos_T *trypos)); +static pos_T *find_start_brace __ARGS((void)); +static pos_T *find_match_paren __ARGS((int)); +static int corr_ind_maxparen __ARGS((pos_T *startpos)); +static int find_last_paren __ARGS((char_u *l, int start, int end)); +static int find_match __ARGS((int lookfor, linenr_T ourscope)); +static int cin_is_cpp_namespace __ARGS((char_u *)); + +/* + * Skip over white space and C comments within the line. + * Also skip over Perl/shell comments if desired. + */ +static char_u * cin_skipcomment(s) +char_u *s; +{ + while (*s) { + char_u *prev_s = s; + + s = skipwhite(s); + + /* Perl/shell # comment comment continues until eol. Require a space + * before # to avoid recognizing $#array. */ + if (curbuf->b_ind_hash_comment != 0 && s != prev_s && *s == '#') { + s += STRLEN(s); + break; + } + if (*s != '/') + break; + ++s; + if (*s == '/') { /* slash-slash comment continues till eol */ + s += STRLEN(s); + break; + } + if (*s != '*') + break; + for (++s; *s; ++s) /* skip slash-star comment */ + if (s[0] == '*' && s[1] == '/') { + s += 2; + break; + } + } + return s; +} + +/* + * Return TRUE if there is no code at *s. White space and comments are + * not considered code. + */ +static int cin_nocode(s) +char_u *s; +{ + return *cin_skipcomment(s) == NUL; +} + +/* + * Check previous lines for a "//" line comment, skipping over blank lines. + */ +static pos_T * find_line_comment() { /* XXX */ + static pos_T pos; + char_u *line; + char_u *p; + + pos = curwin->w_cursor; + while (--pos.lnum > 0) { + line = ml_get(pos.lnum); + p = skipwhite(line); + if (cin_islinecomment(p)) { + pos.col = (int)(p - line); + return &pos; + } + if (*p != NUL) + break; + } + return NULL; +} + +/* + * Check if string matches "label:"; move to character after ':' if true. + */ +static int cin_islabel_skip(s) +char_u **s; +{ + if (!vim_isIDc(**s)) /* need at least one ID character */ + return FALSE; + + while (vim_isIDc(**s)) + (*s)++; + + *s = cin_skipcomment(*s); + + /* "::" is not a label, it's C++ */ + return **s == ':' && *++*s != ':'; +} + +/* + * Recognize a label: "label:". + * Note: curwin->w_cursor must be where we are looking for the label. + */ +int cin_islabel() { /* XXX */ + char_u *s; + + s = cin_skipcomment(ml_get_curline()); + + /* + * Exclude "default" from labels, since it should be indented + * like a switch label. Same for C++ scope declarations. + */ + if (cin_isdefault(s)) + return FALSE; + if (cin_isscopedecl(s)) + return FALSE; + + if (cin_islabel_skip(&s)) { + /* + * Only accept a label if the previous line is terminated or is a case + * label. + */ + pos_T cursor_save; + pos_T *trypos; + char_u *line; + + cursor_save = curwin->w_cursor; + while (curwin->w_cursor.lnum > 1) { + --curwin->w_cursor.lnum; + + /* + * If we're in a comment now, skip to the start of the comment. + */ + curwin->w_cursor.col = 0; + if ((trypos = ind_find_start_comment()) != NULL) /* XXX */ + curwin->w_cursor = *trypos; + + line = ml_get_curline(); + if (cin_ispreproc(line)) /* ignore #defines, #if, etc. */ + continue; + if (*(line = cin_skipcomment(line)) == NUL) + continue; + + curwin->w_cursor = cursor_save; + if (cin_isterminated(line, TRUE, FALSE) + || cin_isscopedecl(line) + || cin_iscase(line, TRUE) + || (cin_islabel_skip(&line) && cin_nocode(line))) + return TRUE; + return FALSE; + } + curwin->w_cursor = cursor_save; + return TRUE; /* label at start of file??? */ + } + return FALSE; +} + +/* + * Recognize structure initialization and enumerations: + * "[typedef] [static|public|protected|private] enum" + * "[typedef] [static|public|protected|private] = {" + */ +static int cin_isinit(void) { + char_u *s; + static char *skip[] = {"static", "public", "protected", "private"}; + + s = cin_skipcomment(ml_get_curline()); + + if (cin_starts_with(s, "typedef")) + s = cin_skipcomment(s + 7); + + for (;; ) { + int i, l; + + for (i = 0; i < (int)(sizeof(skip) / sizeof(char *)); ++i) { + l = (int)strlen(skip[i]); + if (cin_starts_with(s, skip[i])) { + s = cin_skipcomment(s + l); + l = 0; + break; + } + } + if (l != 0) + break; + } + + if (cin_starts_with(s, "enum")) + return TRUE; + + if (cin_ends_in(s, (char_u *)"=", (char_u *)"{")) + return TRUE; + + return FALSE; +} + +/* + * Recognize a switch label: "case .*:" or "default:". + */ +int cin_iscase(s, strict) +char_u *s; +int strict; /* Allow relaxed check of case statement for JS */ +{ + s = cin_skipcomment(s); + if (cin_starts_with(s, "case")) { + for (s += 4; *s; ++s) { + s = cin_skipcomment(s); + if (*s == ':') { + if (s[1] == ':') /* skip over "::" for C++ */ + ++s; + else + return TRUE; + } + if (*s == '\'' && s[1] && s[2] == '\'') + s += 2; /* skip over ':' */ + else if (*s == '/' && (s[1] == '*' || s[1] == '/')) + return FALSE; /* stop at comment */ + else if (*s == '"') { + /* JS etc. */ + if (strict) + return FALSE; /* stop at string */ + else + return TRUE; + } + } + return FALSE; + } + + if (cin_isdefault(s)) + return TRUE; + return FALSE; +} + +/* + * Recognize a "default" switch label. + */ +static int cin_isdefault(s) +char_u *s; +{ + return STRNCMP(s, "default", 7) == 0 + && *(s = cin_skipcomment(s + 7)) == ':' + && s[1] != ':'; +} + +/* + * Recognize a "public/private/protected" scope declaration label. + */ +int cin_isscopedecl(s) +char_u *s; +{ + int i; + + s = cin_skipcomment(s); + if (STRNCMP(s, "public", 6) == 0) + i = 6; + else if (STRNCMP(s, "protected", 9) == 0) + i = 9; + else if (STRNCMP(s, "private", 7) == 0) + i = 7; + else + return FALSE; + return *(s = cin_skipcomment(s + i)) == ':' && s[1] != ':'; +} + +/* Maximum number of lines to search back for a "namespace" line. */ +#define FIND_NAMESPACE_LIM 20 + +/* + * Recognize a "namespace" scope declaration. + */ +static int cin_is_cpp_namespace(s) +char_u *s; +{ + char_u *p; + int has_name = FALSE; + + s = cin_skipcomment(s); + if (STRNCMP(s, "namespace", 9) == 0 && (s[9] == NUL || !vim_iswordc(s[9]))) { + p = cin_skipcomment(skipwhite(s + 9)); + while (*p != NUL) { + if (vim_iswhite(*p)) { + has_name = TRUE; /* found end of a name */ + p = cin_skipcomment(skipwhite(p)); + } else if (*p == '{') { + break; + } else if (vim_iswordc(*p)) { + if (has_name) + return FALSE; /* word character after skipping past name */ + ++p; + } else { + return FALSE; + } + } + return TRUE; + } + return FALSE; +} + +/* + * Return a pointer to the first non-empty non-comment character after a ':'. + * Return NULL if not found. + * case 234: a = b; + * ^ + */ +static char_u * after_label(l) +char_u *l; +{ + for (; *l; ++l) { + if (*l == ':') { + if (l[1] == ':') /* skip over "::" for C++ */ + ++l; + else if (!cin_iscase(l + 1, FALSE)) + break; + } else if (*l == '\'' && l[1] && l[2] == '\'') + l += 2; /* skip over 'x' */ + } + if (*l == NUL) + return NULL; + l = cin_skipcomment(l + 1); + if (*l == NUL) + return NULL; + return l; +} + +/* + * Get indent of line "lnum", skipping a label. + * Return 0 if there is nothing after the label. + */ +static int get_indent_nolabel(lnum) /* XXX */ +linenr_T lnum; +{ + char_u *l; + pos_T fp; + colnr_T col; + char_u *p; + + l = ml_get(lnum); + p = after_label(l); + if (p == NULL) + return 0; + + fp.col = (colnr_T)(p - l); + fp.lnum = lnum; + getvcol(curwin, &fp, &col, NULL, NULL); + return (int)col; +} + +/* + * Find indent for line "lnum", ignoring any case or jump label. + * Also return a pointer to the text (after the label) in "pp". + * label: if (asdf && asdfasdf) + * ^ + */ +static int skip_label(lnum, pp) +linenr_T lnum; +char_u **pp; +{ + char_u *l; + int amount; + pos_T cursor_save; + + cursor_save = curwin->w_cursor; + curwin->w_cursor.lnum = lnum; + l = ml_get_curline(); + /* XXX */ + if (cin_iscase(l, FALSE) || cin_isscopedecl(l) || cin_islabel()) { + amount = get_indent_nolabel(lnum); + l = after_label(ml_get_curline()); + if (l == NULL) /* just in case */ + l = ml_get_curline(); + } else { + amount = get_indent(); + l = ml_get_curline(); + } + *pp = l; + + curwin->w_cursor = cursor_save; + return amount; +} + +/* + * Return the indent of the first variable name after a type in a declaration. + * int a, indent of "a" + * static struct foo b, indent of "b" + * enum bla c, indent of "c" + * Returns zero when it doesn't look like a declaration. + */ +static int cin_first_id_amount() { + char_u *line, *p, *s; + int len; + pos_T fp; + colnr_T col; + + line = ml_get_curline(); + p = skipwhite(line); + len = (int)(skiptowhite(p) - p); + if (len == 6 && STRNCMP(p, "static", 6) == 0) { + p = skipwhite(p + 6); + len = (int)(skiptowhite(p) - p); + } + if (len == 6 && STRNCMP(p, "struct", 6) == 0) + p = skipwhite(p + 6); + else if (len == 4 && STRNCMP(p, "enum", 4) == 0) + p = skipwhite(p + 4); + else if ((len == 8 && STRNCMP(p, "unsigned", 8) == 0) + || (len == 6 && STRNCMP(p, "signed", 6) == 0)) { + s = skipwhite(p + len); + if ((STRNCMP(s, "int", 3) == 0 && vim_iswhite(s[3])) + || (STRNCMP(s, "long", 4) == 0 && vim_iswhite(s[4])) + || (STRNCMP(s, "short", 5) == 0 && vim_iswhite(s[5])) + || (STRNCMP(s, "char", 4) == 0 && vim_iswhite(s[4]))) + p = s; + } + for (len = 0; vim_isIDc(p[len]); ++len) + ; + if (len == 0 || !vim_iswhite(p[len]) || cin_nocode(p)) + return 0; + + p = skipwhite(p + len); + fp.lnum = curwin->w_cursor.lnum; + fp.col = (colnr_T)(p - line); + getvcol(curwin, &fp, &col, NULL, NULL); + return (int)col; +} + +/* + * Return the indent of the first non-blank after an equal sign. + * char *foo = "here"; + * Return zero if no (useful) equal sign found. + * Return -1 if the line above "lnum" ends in a backslash. + * foo = "asdf\ + * asdf\ + * here"; + */ +static int cin_get_equal_amount(lnum) +linenr_T lnum; +{ + char_u *line; + char_u *s; + colnr_T col; + pos_T fp; + + if (lnum > 1) { + line = ml_get(lnum - 1); + if (*line != NUL && line[STRLEN(line) - 1] == '\\') + return -1; + } + + line = s = ml_get(lnum); + while (*s != NUL && vim_strchr((char_u *)"=;{}\"'", *s) == NULL) { + if (cin_iscomment(s)) /* ignore comments */ + s = cin_skipcomment(s); + else + ++s; + } + if (*s != '=') + return 0; + + s = skipwhite(s + 1); + if (cin_nocode(s)) + return 0; + + if (*s == '"') /* nice alignment for continued strings */ + ++s; + + fp.lnum = lnum; + fp.col = (colnr_T)(s - line); + getvcol(curwin, &fp, &col, NULL, NULL); + return (int)col; +} + +/* + * Recognize a preprocessor statement: Any line that starts with '#'. + */ +static int cin_ispreproc(s) +char_u *s; +{ + if (*skipwhite(s) == '#') + return TRUE; + return FALSE; +} + +/* + * Return TRUE if line "*pp" at "*lnump" is a preprocessor statement or a + * continuation line of a preprocessor statement. Decrease "*lnump" to the + * start and return the line in "*pp". + */ +static int cin_ispreproc_cont(pp, lnump) +char_u **pp; +linenr_T *lnump; +{ + char_u *line = *pp; + linenr_T lnum = *lnump; + int retval = FALSE; + + for (;; ) { + if (cin_ispreproc(line)) { + retval = TRUE; + *lnump = lnum; + break; + } + if (lnum == 1) + break; + line = ml_get(--lnum); + if (*line == NUL || line[STRLEN(line) - 1] != '\\') + break; + } + + if (lnum != *lnump) + *pp = ml_get(*lnump); + return retval; +} + +/* + * Recognize the start of a C or C++ comment. + */ +static int cin_iscomment(p) +char_u *p; +{ + return p[0] == '/' && (p[1] == '*' || p[1] == '/'); +} + +/* + * Recognize the start of a "//" comment. + */ +static int cin_islinecomment(p) +char_u *p; +{ + return p[0] == '/' && p[1] == '/'; +} + +/* + * Recognize a line that starts with '{' or '}', or ends with ';', ',', '{' or + * '}'. + * Don't consider "} else" a terminated line. + * If a line begins with an "else", only consider it terminated if no unmatched + * opening braces follow (handle "else { foo();" correctly). + * Return the character terminating the line (ending char's have precedence if + * both apply in order to determine initializations). + */ +static int cin_isterminated(s, incl_open, incl_comma) +char_u *s; +int incl_open; /* include '{' at the end as terminator */ +int incl_comma; /* recognize a trailing comma */ +{ + char_u found_start = 0; + unsigned n_open = 0; + int is_else = FALSE; + + s = cin_skipcomment(s); + + if (*s == '{' || (*s == '}' && !cin_iselse(s))) + found_start = *s; + + if (!found_start) + is_else = cin_iselse(s); + + while (*s) { + /* skip over comments, "" strings and 'c'haracters */ + s = skip_string(cin_skipcomment(s)); + if (*s == '}' && n_open > 0) + --n_open; + if ((!is_else || n_open == 0) + && (*s == ';' || *s == '}' || (incl_comma && *s == ',')) + && cin_nocode(s + 1)) + return *s; + else if (*s == '{') { + if (incl_open && cin_nocode(s + 1)) + return *s; + else + ++n_open; + } + + if (*s) + s++; + } + return found_start; +} + +/* + * Recognize the basic picture of a function declaration -- it needs to + * have an open paren somewhere and a close paren at the end of the line and + * no semicolons anywhere. + * When a line ends in a comma we continue looking in the next line. + * "sp" points to a string with the line. When looking at other lines it must + * be restored to the line. When it's NULL fetch lines here. + * "lnum" is where we start looking. + * "min_lnum" is the line before which we will not be looking. + */ +static int cin_isfuncdecl(sp, first_lnum, min_lnum) +char_u **sp; +linenr_T first_lnum; +linenr_T min_lnum; +{ + char_u *s; + linenr_T lnum = first_lnum; + int retval = FALSE; + pos_T *trypos; + int just_started = TRUE; + + if (sp == NULL) + s = ml_get(lnum); + else + s = *sp; + + if (find_last_paren(s, '(', ')') + && (trypos = find_match_paren(curbuf->b_ind_maxparen)) != NULL) { + lnum = trypos->lnum; + if (lnum < min_lnum) + return FALSE; + + s = ml_get(lnum); + } + + /* Ignore line starting with #. */ + if (cin_ispreproc(s)) + return FALSE; + + while (*s && *s != '(' && *s != ';' && *s != '\'' && *s != '"') { + if (cin_iscomment(s)) /* ignore comments */ + s = cin_skipcomment(s); + else + ++s; + } + if (*s != '(') + return FALSE; /* ';', ' or " before any () or no '(' */ + + while (*s && *s != ';' && *s != '\'' && *s != '"') { + if (*s == ')' && cin_nocode(s + 1)) { + /* ')' at the end: may have found a match + * Check for he previous line not to end in a backslash: + * #if defined(x) && \ + * defined(y) + */ + lnum = first_lnum - 1; + s = ml_get(lnum); + if (*s == NUL || s[STRLEN(s) - 1] != '\\') + retval = TRUE; + goto done; + } + if ((*s == ',' && cin_nocode(s + 1)) || s[1] == NUL || cin_nocode(s)) { + int comma = (*s == ','); + + /* ',' at the end: continue looking in the next line. + * At the end: check for ',' in the next line, for this style: + * func(arg1 + * , arg2) */ + for (;; ) { + if (lnum >= curbuf->b_ml.ml_line_count) + break; + s = ml_get(++lnum); + if (!cin_ispreproc(s)) + break; + } + if (lnum >= curbuf->b_ml.ml_line_count) + break; + /* Require a comma at end of the line or a comma or ')' at the + * start of next line. */ + s = skipwhite(s); + if (!just_started && (!comma && *s != ',' && *s != ')')) + break; + just_started = FALSE; + } else if (cin_iscomment(s)) /* ignore comments */ + s = cin_skipcomment(s); + else { + ++s; + just_started = FALSE; + } + } + +done: + if (lnum != first_lnum && sp != NULL) + *sp = ml_get(first_lnum); + + return retval; +} + +static int cin_isif(p) +char_u *p; +{ + return STRNCMP(p, "if", 2) == 0 && !vim_isIDc(p[2]); +} + +static int cin_iselse(p) +char_u *p; +{ + if (*p == '}') /* accept "} else" */ + p = cin_skipcomment(p + 1); + return STRNCMP(p, "else", 4) == 0 && !vim_isIDc(p[4]); +} + +static int cin_isdo(p) +char_u *p; +{ + return STRNCMP(p, "do", 2) == 0 && !vim_isIDc(p[2]); +} + +/* + * Check if this is a "while" that should have a matching "do". + * We only accept a "while (condition) ;", with only white space between the + * ')' and ';'. The condition may be spread over several lines. + */ +static int cin_iswhileofdo(p, lnum) /* XXX */ +char_u *p; +linenr_T lnum; +{ + pos_T cursor_save; + pos_T *trypos; + int retval = FALSE; + + p = cin_skipcomment(p); + if (*p == '}') /* accept "} while (cond);" */ + p = cin_skipcomment(p + 1); + if (cin_starts_with(p, "while")) { + cursor_save = curwin->w_cursor; + curwin->w_cursor.lnum = lnum; + curwin->w_cursor.col = 0; + p = ml_get_curline(); + while (*p && *p != 'w') { /* skip any '}', until the 'w' of the "while" */ + ++p; + ++curwin->w_cursor.col; + } + if ((trypos = findmatchlimit(NULL, 0, 0, + curbuf->b_ind_maxparen)) != NULL + && *cin_skipcomment(ml_get_pos(trypos) + 1) == ';') + retval = TRUE; + curwin->w_cursor = cursor_save; + } + return retval; +} + +/* + * Check whether in "p" there is an "if", "for" or "while" before "*poffset". + * Return 0 if there is none. + * Otherwise return !0 and update "*poffset" to point to the place where the + * string was found. + */ +static int cin_is_if_for_while_before_offset(line, poffset) +char_u *line; +int *poffset; +{ + int offset = *poffset; + + if (offset-- < 2) + return 0; + while (offset > 2 && vim_iswhite(line[offset])) + --offset; + + offset -= 1; + if (!STRNCMP(line + offset, "if", 2)) + goto probablyFound; + + if (offset >= 1) { + offset -= 1; + if (!STRNCMP(line + offset, "for", 3)) + goto probablyFound; + + if (offset >= 2) { + offset -= 2; + if (!STRNCMP(line + offset, "while", 5)) + goto probablyFound; + } + } + return 0; + +probablyFound: + if (!offset || !vim_isIDc(line[offset - 1])) { + *poffset = offset; + return 1; + } + return 0; +} + +/* + * Return TRUE if we are at the end of a do-while. + * do + * nothing; + * while (foo + * && bar); <-- here + * Adjust the cursor to the line with "while". + */ +static int cin_iswhileofdo_end(terminated) +int terminated; +{ + char_u *line; + char_u *p; + char_u *s; + pos_T *trypos; + int i; + + if (terminated != ';') /* there must be a ';' at the end */ + return FALSE; + + p = line = ml_get_curline(); + while (*p != NUL) { + p = cin_skipcomment(p); + if (*p == ')') { + s = skipwhite(p + 1); + if (*s == ';' && cin_nocode(s + 1)) { + /* Found ");" at end of the line, now check there is "while" + * before the matching '('. XXX */ + i = (int)(p - line); + curwin->w_cursor.col = i; + trypos = find_match_paren(curbuf->b_ind_maxparen); + if (trypos != NULL) { + s = cin_skipcomment(ml_get(trypos->lnum)); + if (*s == '}') /* accept "} while (cond);" */ + s = cin_skipcomment(s + 1); + if (cin_starts_with(s, "while")) { + curwin->w_cursor.lnum = trypos->lnum; + return TRUE; + } + } + + /* Searching may have made "line" invalid, get it again. */ + line = ml_get_curline(); + p = line + i; + } + } + if (*p != NUL) + ++p; + } + return FALSE; +} + +static int cin_isbreak(p) +char_u *p; +{ + return STRNCMP(p, "break", 5) == 0 && !vim_isIDc(p[5]); +} + +/* + * Find the position of a C++ base-class declaration or + * constructor-initialization. eg: + * + * class MyClass : + * baseClass <-- here + * class MyClass : public baseClass, + * anotherBaseClass <-- here (should probably lineup ??) + * MyClass::MyClass(...) : + * baseClass(...) <-- here (constructor-initialization) + * + * This is a lot of guessing. Watch out for "cond ? func() : foo". + */ +static int cin_is_cpp_baseclass(col) +colnr_T *col; /* return: column to align with */ +{ + char_u *s; + int class_or_struct, lookfor_ctor_init, cpp_base_class; + linenr_T lnum = curwin->w_cursor.lnum; + char_u *line = ml_get_curline(); + + *col = 0; + + s = skipwhite(line); + if (*s == '#') /* skip #define FOO x ? (x) : x */ + return FALSE; + s = cin_skipcomment(s); + if (*s == NUL) + return FALSE; + + cpp_base_class = lookfor_ctor_init = class_or_struct = FALSE; + + /* Search for a line starting with '#', empty, ending in ';' or containing + * '{' or '}' and start below it. This handles the following situations: + * a = cond ? + * func() : + * asdf; + * func::foo() + * : something + * {} + * Foo::Foo (int one, int two) + * : something(4), + * somethingelse(3) + * {} + */ + while (lnum > 1) { + line = ml_get(lnum - 1); + s = skipwhite(line); + if (*s == '#' || *s == NUL) + break; + while (*s != NUL) { + s = cin_skipcomment(s); + if (*s == '{' || *s == '}' + || (*s == ';' && cin_nocode(s + 1))) + break; + if (*s != NUL) + ++s; + } + if (*s != NUL) + break; + --lnum; + } + + line = ml_get(lnum); + s = cin_skipcomment(line); + for (;; ) { + if (*s == NUL) { + if (lnum == curwin->w_cursor.lnum) + break; + /* Continue in the cursor line. */ + line = ml_get(++lnum); + s = cin_skipcomment(line); + if (*s == NUL) + continue; + } + + if (s[0] == '"') + s = skip_string(s) + 1; + else if (s[0] == ':') { + if (s[1] == ':') { + /* skip double colon. It can't be a constructor + * initialization any more */ + lookfor_ctor_init = FALSE; + s = cin_skipcomment(s + 2); + } else if (lookfor_ctor_init || class_or_struct) { + /* we have something found, that looks like the start of + * cpp-base-class-declaration or constructor-initialization */ + cpp_base_class = TRUE; + lookfor_ctor_init = class_or_struct = FALSE; + *col = 0; + s = cin_skipcomment(s + 1); + } else + s = cin_skipcomment(s + 1); + } else if ((STRNCMP(s, "class", 5) == 0 && !vim_isIDc(s[5])) + || (STRNCMP(s, "struct", 6) == 0 && !vim_isIDc(s[6]))) { + class_or_struct = TRUE; + lookfor_ctor_init = FALSE; + + if (*s == 'c') + s = cin_skipcomment(s + 5); + else + s = cin_skipcomment(s + 6); + } else { + if (s[0] == '{' || s[0] == '}' || s[0] == ';') { + cpp_base_class = lookfor_ctor_init = class_or_struct = FALSE; + } else if (s[0] == ')') { + /* Constructor-initialization is assumed if we come across + * something like "):" */ + class_or_struct = FALSE; + lookfor_ctor_init = TRUE; + } else if (s[0] == '?') { + /* Avoid seeing '() :' after '?' as constructor init. */ + return FALSE; + } else if (!vim_isIDc(s[0])) { + /* if it is not an identifier, we are wrong */ + class_or_struct = FALSE; + lookfor_ctor_init = FALSE; + } else if (*col == 0) { + /* it can't be a constructor-initialization any more */ + lookfor_ctor_init = FALSE; + + /* the first statement starts here: lineup with this one... */ + if (cpp_base_class) + *col = (colnr_T)(s - line); + } + + /* When the line ends in a comma don't align with it. */ + if (lnum == curwin->w_cursor.lnum && *s == ',' && cin_nocode(s + 1)) + *col = 0; + + s = cin_skipcomment(s + 1); + } + } + + return cpp_base_class; +} + +static int get_baseclass_amount(col) +int col; +{ + int amount; + colnr_T vcol; + pos_T *trypos; + + if (col == 0) { + amount = get_indent(); + if (find_last_paren(ml_get_curline(), '(', ')') + && (trypos = find_match_paren(curbuf->b_ind_maxparen)) != NULL) + amount = get_indent_lnum(trypos->lnum); /* XXX */ + if (!cin_ends_in(ml_get_curline(), (char_u *)",", NULL)) + amount += curbuf->b_ind_cpp_baseclass; + } else { + curwin->w_cursor.col = col; + getvcol(curwin, &curwin->w_cursor, &vcol, NULL, NULL); + amount = (int)vcol; + } + if (amount < curbuf->b_ind_cpp_baseclass) + amount = curbuf->b_ind_cpp_baseclass; + return amount; +} + +/* + * Return TRUE if string "s" ends with the string "find", possibly followed by + * white space and comments. Skip strings and comments. + * Ignore "ignore" after "find" if it's not NULL. + */ +static int cin_ends_in(s, find, ignore) +char_u *s; +char_u *find; +char_u *ignore; +{ + char_u *p = s; + char_u *r; + int len = (int)STRLEN(find); + + while (*p != NUL) { + p = cin_skipcomment(p); + if (STRNCMP(p, find, len) == 0) { + r = skipwhite(p + len); + if (ignore != NULL && STRNCMP(r, ignore, STRLEN(ignore)) == 0) + r = skipwhite(r + STRLEN(ignore)); + if (cin_nocode(r)) + return TRUE; + } + if (*p != NUL) + ++p; + } + return FALSE; +} + +/* + * Return TRUE when "s" starts with "word" and then a non-ID character. + */ +static int cin_starts_with(s, word) +char_u *s; +char *word; +{ + int l = (int)STRLEN(word); + + return STRNCMP(s, word, l) == 0 && !vim_isIDc(s[l]); +} + +/* + * Skip strings, chars and comments until at or past "trypos". + * Return the column found. + */ +static int cin_skip2pos(trypos) +pos_T *trypos; +{ + char_u *line; + char_u *p; + + p = line = ml_get(trypos->lnum); + while (*p && (colnr_T)(p - line) < trypos->col) { + if (cin_iscomment(p)) + p = cin_skipcomment(p); + else { + p = skip_string(p); + ++p; + } + } + return (int)(p - line); +} + +/* + * Find the '{' at the start of the block we are in. + * Return NULL if no match found. + * Ignore a '{' that is in a comment, makes indenting the next three lines + * work. */ +/* foo() */ +/* { */ +/* } */ + +static pos_T * find_start_brace() { /* XXX */ + pos_T cursor_save; + pos_T *trypos; + pos_T *pos; + static pos_T pos_copy; + + cursor_save = curwin->w_cursor; + while ((trypos = findmatchlimit(NULL, '{', FM_BLOCKSTOP, 0)) != NULL) { + pos_copy = *trypos; /* copy pos_T, next findmatch will change it */ + trypos = &pos_copy; + curwin->w_cursor = *trypos; + pos = NULL; + /* ignore the { if it's in a // or / * * / comment */ + if ((colnr_T)cin_skip2pos(trypos) == trypos->col + && (pos = ind_find_start_comment()) == NULL) /* XXX */ + break; + if (pos != NULL) + curwin->w_cursor.lnum = pos->lnum; + } + curwin->w_cursor = cursor_save; + return trypos; +} + +/* + * Find the matching '(', failing if it is in a comment. + * Return NULL if no match found. + */ +static pos_T * find_match_paren(ind_maxparen) /* XXX */ +int ind_maxparen; +{ + pos_T cursor_save; + pos_T *trypos; + static pos_T pos_copy; + + cursor_save = curwin->w_cursor; + if ((trypos = findmatchlimit(NULL, '(', 0, ind_maxparen)) != NULL) { + /* check if the ( is in a // comment */ + if ((colnr_T)cin_skip2pos(trypos) > trypos->col) + trypos = NULL; + else { + pos_copy = *trypos; /* copy trypos, findmatch will change it */ + trypos = &pos_copy; + curwin->w_cursor = *trypos; + if (ind_find_start_comment() != NULL) /* XXX */ + trypos = NULL; + } + } + curwin->w_cursor = cursor_save; + return trypos; +} + +/* + * Return ind_maxparen corrected for the difference in line number between the + * cursor position and "startpos". This makes sure that searching for a + * matching paren above the cursor line doesn't find a match because of + * looking a few lines further. + */ +static int corr_ind_maxparen(startpos) +pos_T *startpos; +{ + long n = (long)startpos->lnum - (long)curwin->w_cursor.lnum; + + if (n > 0 && n < curbuf->b_ind_maxparen / 2) + return curbuf->b_ind_maxparen - (int)n; + return curbuf->b_ind_maxparen; +} + +/* + * Set w_cursor.col to the column number of the last unmatched ')' or '{' in + * line "l". "l" must point to the start of the line. + */ +static int find_last_paren(l, start, end) +char_u *l; +int start, end; +{ + int i; + int retval = FALSE; + int open_count = 0; + + curwin->w_cursor.col = 0; /* default is start of line */ + + for (i = 0; l[i] != NUL; i++) { + i = (int)(cin_skipcomment(l + i) - l); /* ignore parens in comments */ + i = (int)(skip_string(l + i) - l); /* ignore parens in quotes */ + if (l[i] == start) + ++open_count; + else if (l[i] == end) { + if (open_count > 0) + --open_count; + else { + curwin->w_cursor.col = i; + retval = TRUE; + } + } + } + return retval; +} + +/* + * Parse 'cinoptions' and set the values in "curbuf". + * Must be called when 'cinoptions', 'shiftwidth' and/or 'tabstop' changes. + */ +void parse_cino(buf) +buf_T *buf; +{ + char_u *p; + char_u *l; + char_u *digits; + int n; + int divider; + int fraction = 0; + int sw = (int)get_sw_value(buf); + + /* + * Set the default values. + */ + /* Spaces from a block's opening brace the prevailing indent for that + * block should be. */ + buf->b_ind_level = sw; + + /* Spaces from the edge of the line an open brace that's at the end of a + * line is imagined to be. */ + buf->b_ind_open_imag = 0; + + /* Spaces from the prevailing indent for a line that is not preceded by + * an opening brace. */ + buf->b_ind_no_brace = 0; + + /* Column where the first { of a function should be located }. */ + buf->b_ind_first_open = 0; + + /* Spaces from the prevailing indent a leftmost open brace should be + * located. */ + buf->b_ind_open_extra = 0; + + /* Spaces from the matching open brace (real location for one at the left + * edge; imaginary location from one that ends a line) the matching close + * brace should be located. */ + buf->b_ind_close_extra = 0; + + /* Spaces from the edge of the line an open brace sitting in the leftmost + * column is imagined to be. */ + buf->b_ind_open_left_imag = 0; + + /* Spaces jump labels should be shifted to the left if N is non-negative, + * otherwise the jump label will be put to column 1. */ + buf->b_ind_jump_label = -1; + + /* Spaces from the switch() indent a "case xx" label should be located. */ + buf->b_ind_case = sw; + + /* Spaces from the "case xx:" code after a switch() should be located. */ + buf->b_ind_case_code = sw; + + /* Lineup break at end of case in switch() with case label. */ + buf->b_ind_case_break = 0; + + /* Spaces from the class declaration indent a scope declaration label + * should be located. */ + buf->b_ind_scopedecl = sw; + + /* Spaces from the scope declaration label code should be located. */ + buf->b_ind_scopedecl_code = sw; + + /* Amount K&R-style parameters should be indented. */ + buf->b_ind_param = sw; + + /* Amount a function type spec should be indented. */ + buf->b_ind_func_type = sw; + + /* Amount a cpp base class declaration or constructor initialization + * should be indented. */ + buf->b_ind_cpp_baseclass = sw; + + /* additional spaces beyond the prevailing indent a continuation line + * should be located. */ + buf->b_ind_continuation = sw; + + /* Spaces from the indent of the line with an unclosed parentheses. */ + buf->b_ind_unclosed = sw * 2; + + /* Spaces from the indent of the line with an unclosed parentheses, which + * itself is also unclosed. */ + buf->b_ind_unclosed2 = sw; + + /* Suppress ignoring spaces from the indent of a line starting with an + * unclosed parentheses. */ + buf->b_ind_unclosed_noignore = 0; + + /* If the opening paren is the last nonwhite character on the line, and + * b_ind_unclosed_wrapped is nonzero, use this indent relative to the outer + * context (for very long lines). */ + buf->b_ind_unclosed_wrapped = 0; + + /* Suppress ignoring white space when lining up with the character after + * an unclosed parentheses. */ + buf->b_ind_unclosed_whiteok = 0; + + /* Indent a closing parentheses under the line start of the matching + * opening parentheses. */ + buf->b_ind_matching_paren = 0; + + /* Indent a closing parentheses under the previous line. */ + buf->b_ind_paren_prev = 0; + + /* Extra indent for comments. */ + buf->b_ind_comment = 0; + + /* Spaces from the comment opener when there is nothing after it. */ + buf->b_ind_in_comment = 3; + + /* Boolean: if non-zero, use b_ind_in_comment even if there is something + * after the comment opener. */ + buf->b_ind_in_comment2 = 0; + + /* Max lines to search for an open paren. */ + buf->b_ind_maxparen = 20; + + /* Max lines to search for an open comment. */ + buf->b_ind_maxcomment = 70; + + /* Handle braces for java code. */ + buf->b_ind_java = 0; + + /* Not to confuse JS object properties with labels. */ + buf->b_ind_js = 0; + + /* Handle blocked cases correctly. */ + buf->b_ind_keep_case_label = 0; + + /* Handle C++ namespace. */ + buf->b_ind_cpp_namespace = 0; + + /* Handle continuation lines containing conditions of if(), for() and + * while(). */ + buf->b_ind_if_for_while = 0; + + for (p = buf->b_p_cino; *p; ) { + l = p++; + if (*p == '-') + ++p; + digits = p; /* remember where the digits start */ + n = getdigits(&p); + divider = 0; + if (*p == '.') { /* ".5s" means a fraction */ + fraction = atol((char *)++p); + while (VIM_ISDIGIT(*p)) { + ++p; + if (divider) + divider *= 10; + else + divider = 10; + } + } + if (*p == 's') { /* "2s" means two times 'shiftwidth' */ + if (p == digits) + n = sw; /* just "s" is one 'shiftwidth' */ + else { + n *= sw; + if (divider) + n += (sw * fraction + divider / 2) / divider; + } + ++p; + } + if (l[1] == '-') + n = -n; + + /* When adding an entry here, also update the default 'cinoptions' in + * doc/indent.txt, and add explanation for it! */ + switch (*l) { + case '>': buf->b_ind_level = n; break; + case 'e': buf->b_ind_open_imag = n; break; + case 'n': buf->b_ind_no_brace = n; break; + case 'f': buf->b_ind_first_open = n; break; + case '{': buf->b_ind_open_extra = n; break; + case '}': buf->b_ind_close_extra = n; break; + case '^': buf->b_ind_open_left_imag = n; break; + case 'L': buf->b_ind_jump_label = n; break; + case ':': buf->b_ind_case = n; break; + case '=': buf->b_ind_case_code = n; break; + case 'b': buf->b_ind_case_break = n; break; + case 'p': buf->b_ind_param = n; break; + case 't': buf->b_ind_func_type = n; break; + case '/': buf->b_ind_comment = n; break; + case 'c': buf->b_ind_in_comment = n; break; + case 'C': buf->b_ind_in_comment2 = n; break; + case 'i': buf->b_ind_cpp_baseclass = n; break; + case '+': buf->b_ind_continuation = n; break; + case '(': buf->b_ind_unclosed = n; break; + case 'u': buf->b_ind_unclosed2 = n; break; + case 'U': buf->b_ind_unclosed_noignore = n; break; + case 'W': buf->b_ind_unclosed_wrapped = n; break; + case 'w': buf->b_ind_unclosed_whiteok = n; break; + case 'm': buf->b_ind_matching_paren = n; break; + case 'M': buf->b_ind_paren_prev = n; break; + case ')': buf->b_ind_maxparen = n; break; + case '*': buf->b_ind_maxcomment = n; break; + case 'g': buf->b_ind_scopedecl = n; break; + case 'h': buf->b_ind_scopedecl_code = n; break; + case 'j': buf->b_ind_java = n; break; + case 'J': buf->b_ind_js = n; break; + case 'l': buf->b_ind_keep_case_label = n; break; + case '#': buf->b_ind_hash_comment = n; break; + case 'N': buf->b_ind_cpp_namespace = n; break; + case 'k': buf->b_ind_if_for_while = n; break; + } + if (*p == ',') + ++p; + } +} + +int get_c_indent() { + pos_T cur_curpos; + int amount; + int scope_amount; + int cur_amount = MAXCOL; + colnr_T col; + char_u *theline; + char_u *linecopy; + pos_T *trypos; + pos_T *tryposBrace = NULL; + pos_T our_paren_pos; + char_u *start; + int start_brace; +#define BRACE_IN_COL0 1 /* '{' is in column 0 */ +#define BRACE_AT_START 2 /* '{' is at start of line */ +#define BRACE_AT_END 3 /* '{' is at end of line */ + linenr_T ourscope; + char_u *l; + char_u *look; + char_u terminated; + int lookfor; +#define LOOKFOR_INITIAL 0 +#define LOOKFOR_IF 1 +#define LOOKFOR_DO 2 +#define LOOKFOR_CASE 3 +#define LOOKFOR_ANY 4 +#define LOOKFOR_TERM 5 +#define LOOKFOR_UNTERM 6 +#define LOOKFOR_SCOPEDECL 7 +#define LOOKFOR_NOBREAK 8 +#define LOOKFOR_CPP_BASECLASS 9 +#define LOOKFOR_ENUM_OR_INIT 10 + + int whilelevel; + linenr_T lnum; + int n; + int iscase; + int lookfor_break; + int lookfor_cpp_namespace = FALSE; + int cont_amount = 0; /* amount for continuation line */ + int original_line_islabel; + int added_to_amount = 0; + + /* make a copy, value is changed below */ + int ind_continuation = curbuf->b_ind_continuation; + + /* remember where the cursor was when we started */ + cur_curpos = curwin->w_cursor; + + /* if we are at line 1 0 is fine, right? */ + if (cur_curpos.lnum == 1) + return 0; + + /* Get a copy of the current contents of the line. + * This is required, because only the most recent line obtained with + * ml_get is valid! */ + linecopy = vim_strsave(ml_get(cur_curpos.lnum)); + if (linecopy == NULL) + return 0; + + /* + * In insert mode and the cursor is on a ')' truncate the line at the + * cursor position. We don't want to line up with the matching '(' when + * inserting new stuff. + * For unknown reasons the cursor might be past the end of the line, thus + * check for that. + */ + if ((State & INSERT) + && curwin->w_cursor.col < (colnr_T)STRLEN(linecopy) + && linecopy[curwin->w_cursor.col] == ')') + linecopy[curwin->w_cursor.col] = NUL; + + theline = skipwhite(linecopy); + + /* move the cursor to the start of the line */ + + curwin->w_cursor.col = 0; + + original_line_islabel = cin_islabel(); /* XXX */ + + /* + * #defines and so on always go at the left when included in 'cinkeys'. + */ + if (*theline == '#' && (*linecopy == '#' || in_cinkeys('#', ' ', TRUE))) + amount = curbuf->b_ind_hash_comment; + + /* + * Is it a non-case label? Then that goes at the left margin too unless: + * - JS flag is set. + * - 'L' item has a positive value. + */ + else if (original_line_islabel && !curbuf->b_ind_js + && curbuf->b_ind_jump_label < 0) { + amount = 0; + } + /* + * If we're inside a "//" comment and there is a "//" comment in a + * previous line, lineup with that one. + */ + else if (cin_islinecomment(theline) + && (trypos = find_line_comment()) != NULL) { /* XXX */ + /* find how indented the line beginning the comment is */ + getvcol(curwin, trypos, &col, NULL, NULL); + amount = col; + } + /* + * If we're inside a comment and not looking at the start of the + * comment, try using the 'comments' option. + */ + else if (!cin_iscomment(theline) + && (trypos = ind_find_start_comment()) != NULL) { + /* XXX */ + int lead_start_len = 2; + int lead_middle_len = 1; + char_u lead_start[COM_MAX_LEN]; /* start-comment string */ + char_u lead_middle[COM_MAX_LEN]; /* middle-comment string */ + char_u lead_end[COM_MAX_LEN]; /* end-comment string */ + char_u *p; + int start_align = 0; + int start_off = 0; + int done = FALSE; + + /* find how indented the line beginning the comment is */ + getvcol(curwin, trypos, &col, NULL, NULL); + amount = col; + *lead_start = NUL; + *lead_middle = NUL; + + p = curbuf->b_p_com; + while (*p != NUL) { + int align = 0; + int off = 0; + int what = 0; + + while (*p != NUL && *p != ':') { + if (*p == COM_START || *p == COM_END || *p == COM_MIDDLE) + what = *p++; + else if (*p == COM_LEFT || *p == COM_RIGHT) + align = *p++; + else if (VIM_ISDIGIT(*p) || *p == '-') + off = getdigits(&p); + else + ++p; + } + + if (*p == ':') + ++p; + (void)copy_option_part(&p, lead_end, COM_MAX_LEN, ","); + if (what == COM_START) { + STRCPY(lead_start, lead_end); + lead_start_len = (int)STRLEN(lead_start); + start_off = off; + start_align = align; + } else if (what == COM_MIDDLE) { + STRCPY(lead_middle, lead_end); + lead_middle_len = (int)STRLEN(lead_middle); + } else if (what == COM_END) { + /* If our line starts with the middle comment string, line it + * up with the comment opener per the 'comments' option. */ + if (STRNCMP(theline, lead_middle, lead_middle_len) == 0 + && STRNCMP(theline, lead_end, STRLEN(lead_end)) != 0) { + done = TRUE; + if (curwin->w_cursor.lnum > 1) { + /* If the start comment string matches in the previous + * line, use the indent of that line plus offset. If + * the middle comment string matches in the previous + * line, use the indent of that line. XXX */ + look = skipwhite(ml_get(curwin->w_cursor.lnum - 1)); + if (STRNCMP(look, lead_start, lead_start_len) == 0) + amount = get_indent_lnum(curwin->w_cursor.lnum - 1); + else if (STRNCMP(look, lead_middle, + lead_middle_len) == 0) { + amount = get_indent_lnum(curwin->w_cursor.lnum - 1); + break; + } + /* If the start comment string doesn't match with the + * start of the comment, skip this entry. XXX */ + else if (STRNCMP(ml_get(trypos->lnum) + trypos->col, + lead_start, lead_start_len) != 0) + continue; + } + if (start_off != 0) + amount += start_off; + else if (start_align == COM_RIGHT) + amount += vim_strsize(lead_start) + - vim_strsize(lead_middle); + break; + } + + /* If our line starts with the end comment string, line it up + * with the middle comment */ + if (STRNCMP(theline, lead_middle, lead_middle_len) != 0 + && STRNCMP(theline, lead_end, STRLEN(lead_end)) == 0) { + amount = get_indent_lnum(curwin->w_cursor.lnum - 1); + /* XXX */ + if (off != 0) + amount += off; + else if (align == COM_RIGHT) + amount += vim_strsize(lead_start) + - vim_strsize(lead_middle); + done = TRUE; + break; + } + } + } + + /* If our line starts with an asterisk, line up with the + * asterisk in the comment opener; otherwise, line up + * with the first character of the comment text. + */ + if (done) + ; + else if (theline[0] == '*') + amount += 1; + else { + /* + * If we are more than one line away from the comment opener, take + * the indent of the previous non-empty line. If 'cino' has "CO" + * and we are just below the comment opener and there are any + * white characters after it line up with the text after it; + * otherwise, add the amount specified by "c" in 'cino' + */ + amount = -1; + for (lnum = cur_curpos.lnum - 1; lnum > trypos->lnum; --lnum) { + if (linewhite(lnum)) /* skip blank lines */ + continue; + amount = get_indent_lnum(lnum); /* XXX */ + break; + } + if (amount == -1) { /* use the comment opener */ + if (!curbuf->b_ind_in_comment2) { + start = ml_get(trypos->lnum); + look = start + trypos->col + 2; /* skip / and * */ + if (*look != NUL) /* if something after it */ + trypos->col = (colnr_T)(skipwhite(look) - start); + } + getvcol(curwin, trypos, &col, NULL, NULL); + amount = col; + if (curbuf->b_ind_in_comment2 || *look == NUL) + amount += curbuf->b_ind_in_comment; + } + } + } + /* + * Are we inside parentheses or braces? + */ /* XXX */ + else if (((trypos = find_match_paren(curbuf->b_ind_maxparen)) != NULL + && curbuf->b_ind_java == 0) + || (tryposBrace = find_start_brace()) != NULL + || trypos != NULL) { + if (trypos != NULL && tryposBrace != NULL) { + /* Both an unmatched '(' and '{' is found. Use the one which is + * closer to the current cursor position, set the other to NULL. */ + if (trypos->lnum != tryposBrace->lnum + ? trypos->lnum < tryposBrace->lnum + : trypos->col < tryposBrace->col) + trypos = NULL; + else + tryposBrace = NULL; + } + + if (trypos != NULL) { + /* + * If the matching paren is more than one line away, use the indent of + * a previous non-empty line that matches the same paren. + */ + if (theline[0] == ')' && curbuf->b_ind_paren_prev) { + /* Line up with the start of the matching paren line. */ + amount = get_indent_lnum(curwin->w_cursor.lnum - 1); /* XXX */ + } else { + amount = -1; + our_paren_pos = *trypos; + for (lnum = cur_curpos.lnum - 1; lnum > our_paren_pos.lnum; --lnum) { + l = skipwhite(ml_get(lnum)); + if (cin_nocode(l)) /* skip comment lines */ + continue; + if (cin_ispreproc_cont(&l, &lnum)) + continue; /* ignore #define, #if, etc. */ + curwin->w_cursor.lnum = lnum; + + /* Skip a comment. XXX */ + if ((trypos = ind_find_start_comment()) != NULL) { + lnum = trypos->lnum + 1; + continue; + } + + /* XXX */ + if ((trypos = find_match_paren( + corr_ind_maxparen(&cur_curpos))) != NULL + && trypos->lnum == our_paren_pos.lnum + && trypos->col == our_paren_pos.col) { + amount = get_indent_lnum(lnum); /* XXX */ + + if (theline[0] == ')') { + if (our_paren_pos.lnum != lnum + && cur_amount > amount) + cur_amount = amount; + amount = -1; + } + break; + } + } + } + + /* + * Line up with line where the matching paren is. XXX + * If the line starts with a '(' or the indent for unclosed + * parentheses is zero, line up with the unclosed parentheses. + */ + if (amount == -1) { + int ignore_paren_col = 0; + int is_if_for_while = 0; + + if (curbuf->b_ind_if_for_while) { + /* Look for the outermost opening parenthesis on this line + * and check whether it belongs to an "if", "for" or "while". */ + + pos_T cursor_save = curwin->w_cursor; + pos_T outermost; + char_u *line; + + trypos = &our_paren_pos; + do { + outermost = *trypos; + curwin->w_cursor.lnum = outermost.lnum; + curwin->w_cursor.col = outermost.col; + + trypos = find_match_paren(curbuf->b_ind_maxparen); + } while (trypos && trypos->lnum == outermost.lnum); + + curwin->w_cursor = cursor_save; + + line = ml_get(outermost.lnum); + + is_if_for_while = + cin_is_if_for_while_before_offset(line, &outermost.col); + } + + amount = skip_label(our_paren_pos.lnum, &look); + look = skipwhite(look); + if (*look == '(') { + linenr_T save_lnum = curwin->w_cursor.lnum; + char_u *line; + int look_col; + + /* Ignore a '(' in front of the line that has a match before + * our matching '('. */ + curwin->w_cursor.lnum = our_paren_pos.lnum; + line = ml_get_curline(); + look_col = (int)(look - line); + curwin->w_cursor.col = look_col + 1; + if ((trypos = findmatchlimit(NULL, ')', 0, + curbuf->b_ind_maxparen)) + != NULL + && trypos->lnum == our_paren_pos.lnum + && trypos->col < our_paren_pos.col) + ignore_paren_col = trypos->col + 1; + + curwin->w_cursor.lnum = save_lnum; + look = ml_get(our_paren_pos.lnum) + look_col; + } + if (theline[0] == ')' || (curbuf->b_ind_unclosed == 0 + && is_if_for_while == 0) + || (!curbuf->b_ind_unclosed_noignore && *look == '(' + && ignore_paren_col == 0)) { + /* + * If we're looking at a close paren, line up right there; + * otherwise, line up with the next (non-white) character. + * When b_ind_unclosed_wrapped is set and the matching paren is + * the last nonwhite character of the line, use either the + * indent of the current line or the indentation of the next + * outer paren and add b_ind_unclosed_wrapped (for very long + * lines). + */ + if (theline[0] != ')') { + cur_amount = MAXCOL; + l = ml_get(our_paren_pos.lnum); + if (curbuf->b_ind_unclosed_wrapped + && cin_ends_in(l, (char_u *)"(", NULL)) { + /* look for opening unmatched paren, indent one level + * for each additional level */ + n = 1; + for (col = 0; col < our_paren_pos.col; ++col) { + switch (l[col]) { + case '(': + case '{': ++n; + break; + + case ')': + case '}': if (n > 1) + --n; + break; + } + } + + our_paren_pos.col = 0; + amount += n * curbuf->b_ind_unclosed_wrapped; + } else if (curbuf->b_ind_unclosed_whiteok) + our_paren_pos.col++; + else { + col = our_paren_pos.col + 1; + while (vim_iswhite(l[col])) + col++; + if (l[col] != NUL) /* In case of trailing space */ + our_paren_pos.col = col; + else + our_paren_pos.col++; + } + } + + /* + * Find how indented the paren is, or the character after it + * if we did the above "if". + */ + if (our_paren_pos.col > 0) { + getvcol(curwin, &our_paren_pos, &col, NULL, NULL); + if (cur_amount > (int)col) + cur_amount = col; + } + } + + if (theline[0] == ')' && curbuf->b_ind_matching_paren) { + /* Line up with the start of the matching paren line. */ + } else if ((curbuf->b_ind_unclosed == 0 && is_if_for_while == 0) + || (!curbuf->b_ind_unclosed_noignore + && *look == '(' && ignore_paren_col == 0)) { + if (cur_amount != MAXCOL) + amount = cur_amount; + } else { + /* Add b_ind_unclosed2 for each '(' before our matching one, + * but ignore (void) before the line (ignore_paren_col). */ + col = our_paren_pos.col; + while ((int)our_paren_pos.col > ignore_paren_col) { + --our_paren_pos.col; + switch (*ml_get_pos(&our_paren_pos)) { + case '(': amount += curbuf->b_ind_unclosed2; + col = our_paren_pos.col; + break; + case ')': amount -= curbuf->b_ind_unclosed2; + col = MAXCOL; + break; + } + } + + /* Use b_ind_unclosed once, when the first '(' is not inside + * braces */ + if (col == MAXCOL) + amount += curbuf->b_ind_unclosed; + else { + curwin->w_cursor.lnum = our_paren_pos.lnum; + curwin->w_cursor.col = col; + if (find_match_paren(curbuf->b_ind_maxparen) != NULL) + amount += curbuf->b_ind_unclosed2; + else { + if (is_if_for_while) + amount += curbuf->b_ind_if_for_while; + else + amount += curbuf->b_ind_unclosed; + } + } + /* + * For a line starting with ')' use the minimum of the two + * positions, to avoid giving it more indent than the previous + * lines: + * func_long_name( if (x + * arg && yy + * ) ^ not here ) ^ not here + */ + if (cur_amount < amount) + amount = cur_amount; + } + } + + /* add extra indent for a comment */ + if (cin_iscomment(theline)) + amount += curbuf->b_ind_comment; + } + /* + * Are we at least inside braces, then? + */ + else { + trypos = tryposBrace; + + ourscope = trypos->lnum; + start = ml_get(ourscope); + + /* + * Now figure out how indented the line is in general. + * If the brace was at the start of the line, we use that; + * otherwise, check out the indentation of the line as + * a whole and then add the "imaginary indent" to that. + */ + look = skipwhite(start); + if (*look == '{') { + getvcol(curwin, trypos, &col, NULL, NULL); + amount = col; + if (*start == '{') + start_brace = BRACE_IN_COL0; + else + start_brace = BRACE_AT_START; + } else { + /* + * that opening brace might have been on a continuation + * line. if so, find the start of the line. + */ + curwin->w_cursor.lnum = ourscope; + + /* + * position the cursor over the rightmost paren, so that + * matching it will take us back to the start of the line. + */ + lnum = ourscope; + if (find_last_paren(start, '(', ')') + && (trypos = find_match_paren(curbuf->b_ind_maxparen)) + != NULL) + lnum = trypos->lnum; + + /* + * It could have been something like + * case 1: if (asdf && + * ldfd) { + * } + */ + if (curbuf->b_ind_js || (curbuf->b_ind_keep_case_label + && cin_iscase(skipwhite(ml_get_curline()), + FALSE))) + amount = get_indent(); + else + amount = skip_label(lnum, &l); + + start_brace = BRACE_AT_END; + } + + /* + * if we're looking at a closing brace, that's where + * we want to be. otherwise, add the amount of room + * that an indent is supposed to be. + */ + if (theline[0] == '}') { + /* + * they may want closing braces to line up with something + * other than the open brace. indulge them, if so. + */ + amount += curbuf->b_ind_close_extra; + } else { + /* + * If we're looking at an "else", try to find an "if" + * to match it with. + * If we're looking at a "while", try to find a "do" + * to match it with. + */ + lookfor = LOOKFOR_INITIAL; + if (cin_iselse(theline)) + lookfor = LOOKFOR_IF; + else if (cin_iswhileofdo(theline, cur_curpos.lnum)) /* XXX */ + lookfor = LOOKFOR_DO; + if (lookfor != LOOKFOR_INITIAL) { + curwin->w_cursor.lnum = cur_curpos.lnum; + if (find_match(lookfor, ourscope) == OK) { + amount = get_indent(); /* XXX */ + goto theend; + } + } + + /* + * We get here if we are not on an "while-of-do" or "else" (or + * failed to find a matching "if"). + * Search backwards for something to line up with. + * First set amount for when we don't find anything. + */ + + /* + * if the '{' is _really_ at the left margin, use the imaginary + * location of a left-margin brace. Otherwise, correct the + * location for b_ind_open_extra. + */ + + if (start_brace == BRACE_IN_COL0) { /* '{' is in column 0 */ + amount = curbuf->b_ind_open_left_imag; + lookfor_cpp_namespace = TRUE; + } else if (start_brace == BRACE_AT_START && + lookfor_cpp_namespace) { /* '{' is at start */ + + lookfor_cpp_namespace = TRUE; + } else { + if (start_brace == BRACE_AT_END) { /* '{' is at end of line */ + amount += curbuf->b_ind_open_imag; + + l = skipwhite(ml_get_curline()); + if (cin_is_cpp_namespace(l)) + amount += curbuf->b_ind_cpp_namespace; + } else { + /* Compensate for adding b_ind_open_extra later. */ + amount -= curbuf->b_ind_open_extra; + if (amount < 0) + amount = 0; + } + } + + lookfor_break = FALSE; + + if (cin_iscase(theline, FALSE)) { /* it's a switch() label */ + lookfor = LOOKFOR_CASE; /* find a previous switch() label */ + amount += curbuf->b_ind_case; + } else if (cin_isscopedecl(theline)) { /* private:, ... */ + lookfor = LOOKFOR_SCOPEDECL; /* class decl is this block */ + amount += curbuf->b_ind_scopedecl; + } else { + if (curbuf->b_ind_case_break && cin_isbreak(theline)) + /* break; ... */ + lookfor_break = TRUE; + + lookfor = LOOKFOR_INITIAL; + /* b_ind_level from start of block */ + amount += curbuf->b_ind_level; + } + scope_amount = amount; + whilelevel = 0; + + /* + * Search backwards. If we find something we recognize, line up + * with that. + * + * if we're looking at an open brace, indent + * the usual amount relative to the conditional + * that opens the block. + */ + curwin->w_cursor = cur_curpos; + for (;; ) { + curwin->w_cursor.lnum--; + curwin->w_cursor.col = 0; + + /* + * If we went all the way back to the start of our scope, line + * up with it. + */ + if (curwin->w_cursor.lnum <= ourscope) { + /* we reached end of scope: + * if looking for a enum or structure initialization + * go further back: + * if it is an initializer (enum xxx or xxx =), then + * don't add ind_continuation, otherwise it is a variable + * declaration: + * int x, + * here; <-- add ind_continuation + */ + if (lookfor == LOOKFOR_ENUM_OR_INIT) { + if (curwin->w_cursor.lnum == 0 + || curwin->w_cursor.lnum + < ourscope - curbuf->b_ind_maxparen) { + /* nothing found (abuse curbuf->b_ind_maxparen as + * limit) assume terminated line (i.e. a variable + * initialization) */ + if (cont_amount > 0) + amount = cont_amount; + else if (!curbuf->b_ind_js) + amount += ind_continuation; + break; + } + + l = ml_get_curline(); + + /* + * If we're in a comment now, skip to the start of the + * comment. + */ + trypos = ind_find_start_comment(); + if (trypos != NULL) { + curwin->w_cursor.lnum = trypos->lnum + 1; + curwin->w_cursor.col = 0; + continue; + } + + /* + * Skip preprocessor directives and blank lines. + */ + if (cin_ispreproc_cont(&l, &curwin->w_cursor.lnum)) + continue; + + if (cin_nocode(l)) + continue; + + terminated = cin_isterminated(l, FALSE, TRUE); + + /* + * If we are at top level and the line looks like a + * function declaration, we are done + * (it's a variable declaration). + */ + if (start_brace != BRACE_IN_COL0 + || !cin_isfuncdecl(&l, curwin->w_cursor.lnum, 0)) { + /* if the line is terminated with another ',' + * it is a continued variable initialization. + * don't add extra indent. + * TODO: does not work, if a function + * declaration is split over multiple lines: + * cin_isfuncdecl returns FALSE then. + */ + if (terminated == ',') + break; + + /* if it es a enum declaration or an assignment, + * we are done. + */ + if (terminated != ';' && cin_isinit()) + break; + + /* nothing useful found */ + if (terminated == 0 || terminated == '{') + continue; + } + + if (terminated != ';') { + /* Skip parens and braces. Position the cursor + * over the rightmost paren, so that matching it + * will take us back to the start of the line. + */ /* XXX */ + trypos = NULL; + if (find_last_paren(l, '(', ')')) + trypos = find_match_paren( + curbuf->b_ind_maxparen); + + if (trypos == NULL && find_last_paren(l, '{', '}')) + trypos = find_start_brace(); + + if (trypos != NULL) { + curwin->w_cursor.lnum = trypos->lnum + 1; + curwin->w_cursor.col = 0; + continue; + } + } + + /* it's a variable declaration, add indentation + * like in + * int a, + * b; + */ + if (cont_amount > 0) + amount = cont_amount; + else + amount += ind_continuation; + } else if (lookfor == LOOKFOR_UNTERM) { + if (cont_amount > 0) + amount = cont_amount; + else + amount += ind_continuation; + } else { + if (lookfor != LOOKFOR_TERM + && lookfor != LOOKFOR_CPP_BASECLASS) { + amount = scope_amount; + if (theline[0] == '{') { + amount += curbuf->b_ind_open_extra; + added_to_amount = curbuf->b_ind_open_extra; + } + } + + if (lookfor_cpp_namespace) { + /* + * Looking for C++ namespace, need to look further + * back. + */ + if (curwin->w_cursor.lnum == ourscope) + continue; + + if (curwin->w_cursor.lnum == 0 + || curwin->w_cursor.lnum + < ourscope - FIND_NAMESPACE_LIM) + break; + + l = ml_get_curline(); + + /* If we're in a comment now, skip to the start of + * the comment. */ + trypos = ind_find_start_comment(); + if (trypos != NULL) { + curwin->w_cursor.lnum = trypos->lnum + 1; + curwin->w_cursor.col = 0; + continue; + } + + /* Skip preprocessor directives and blank lines. */ + if (cin_ispreproc_cont(&l, &curwin->w_cursor.lnum)) + continue; + + /* Finally the actual check for "namespace". */ + if (cin_is_cpp_namespace(l)) { + amount += curbuf->b_ind_cpp_namespace + - added_to_amount; + break; + } + + if (cin_nocode(l)) + continue; + } + } + break; + } + + /* + * If we're in a comment now, skip to the start of the comment. + */ /* XXX */ + if ((trypos = ind_find_start_comment()) != NULL) { + curwin->w_cursor.lnum = trypos->lnum + 1; + curwin->w_cursor.col = 0; + continue; + } + + l = ml_get_curline(); + + /* + * If this is a switch() label, may line up relative to that. + * If this is a C++ scope declaration, do the same. + */ + iscase = cin_iscase(l, FALSE); + if (iscase || cin_isscopedecl(l)) { + /* we are only looking for cpp base class + * declaration/initialization any longer */ + if (lookfor == LOOKFOR_CPP_BASECLASS) + break; + + /* When looking for a "do" we are not interested in + * labels. */ + if (whilelevel > 0) + continue; + + /* + * case xx: + * c = 99 + <- this indent plus continuation + **-> here; + */ + if (lookfor == LOOKFOR_UNTERM + || lookfor == LOOKFOR_ENUM_OR_INIT) { + if (cont_amount > 0) + amount = cont_amount; + else + amount += ind_continuation; + break; + } + + /* + * case xx: <- line up with this case + * x = 333; + * case yy: + */ + if ( (iscase && lookfor == LOOKFOR_CASE) + || (iscase && lookfor_break) + || (!iscase && lookfor == LOOKFOR_SCOPEDECL)) { + /* + * Check that this case label is not for another + * switch() + */ /* XXX */ + if ((trypos = find_start_brace()) == NULL + || trypos->lnum == ourscope) { + amount = get_indent(); /* XXX */ + break; + } + continue; + } + + n = get_indent_nolabel(curwin->w_cursor.lnum); /* XXX */ + + /* + * case xx: if (cond) <- line up with this if + * y = y + 1; + * -> s = 99; + * + * case xx: + * if (cond) <- line up with this line + * y = y + 1; + * -> s = 99; + */ + if (lookfor == LOOKFOR_TERM) { + if (n) + amount = n; + + if (!lookfor_break) + break; + } + + /* + * case xx: x = x + 1; <- line up with this x + * -> y = y + 1; + * + * case xx: if (cond) <- line up with this if + * -> y = y + 1; + */ + if (n) { + amount = n; + l = after_label(ml_get_curline()); + if (l != NULL && cin_is_cinword(l)) { + if (theline[0] == '{') + amount += curbuf->b_ind_open_extra; + else + amount += curbuf->b_ind_level + + curbuf->b_ind_no_brace; + } + break; + } + + /* + * Try to get the indent of a statement before the switch + * label. If nothing is found, line up relative to the + * switch label. + * break; <- may line up with this line + * case xx: + * -> y = 1; + */ + scope_amount = get_indent() + (iscase /* XXX */ + ? curbuf->b_ind_case_code + : curbuf->b_ind_scopedecl_code); + lookfor = curbuf->b_ind_case_break + ? LOOKFOR_NOBREAK : LOOKFOR_ANY; + continue; + } + + /* + * Looking for a switch() label or C++ scope declaration, + * ignore other lines, skip {}-blocks. + */ + if (lookfor == LOOKFOR_CASE || lookfor == LOOKFOR_SCOPEDECL) { + if (find_last_paren(l, '{', '}') + && (trypos = find_start_brace()) != NULL) { + curwin->w_cursor.lnum = trypos->lnum + 1; + curwin->w_cursor.col = 0; + } + continue; + } + + /* + * Ignore jump labels with nothing after them. + */ + if (!curbuf->b_ind_js && cin_islabel()) { + l = after_label(ml_get_curline()); + if (l == NULL || cin_nocode(l)) + continue; + } + + /* + * Ignore #defines, #if, etc. + * Ignore comment and empty lines. + * (need to get the line again, cin_islabel() may have + * unlocked it) + */ + l = ml_get_curline(); + if (cin_ispreproc_cont(&l, &curwin->w_cursor.lnum) + || cin_nocode(l)) + continue; + + /* + * Are we at the start of a cpp base class declaration or + * constructor initialization? + */ /* XXX */ + n = FALSE; + if (lookfor != LOOKFOR_TERM && curbuf->b_ind_cpp_baseclass > 0) { + n = cin_is_cpp_baseclass(&col); + l = ml_get_curline(); + } + if (n) { + if (lookfor == LOOKFOR_UNTERM) { + if (cont_amount > 0) + amount = cont_amount; + else + amount += ind_continuation; + } else if (theline[0] == '{') { + /* Need to find start of the declaration. */ + lookfor = LOOKFOR_UNTERM; + ind_continuation = 0; + continue; + } else + /* XXX */ + amount = get_baseclass_amount(col); + break; + } else if (lookfor == LOOKFOR_CPP_BASECLASS) { + /* only look, whether there is a cpp base class + * declaration or initialization before the opening brace. + */ + if (cin_isterminated(l, TRUE, FALSE)) + break; + else + continue; + } + + /* + * What happens next depends on the line being terminated. + * If terminated with a ',' only consider it terminating if + * there is another unterminated statement behind, eg: + * 123, + * sizeof + * here + * Otherwise check whether it is a enumeration or structure + * initialisation (not indented) or a variable declaration + * (indented). + */ + terminated = cin_isterminated(l, FALSE, TRUE); + + if (terminated == 0 || (lookfor != LOOKFOR_UNTERM + && terminated == ',')) { + /* + * if we're in the middle of a paren thing, + * go back to the line that starts it so + * we can get the right prevailing indent + * if ( foo && + * bar ) + */ + /* + * position the cursor over the rightmost paren, so that + * matching it will take us back to the start of the line. + */ + (void)find_last_paren(l, '(', ')'); + trypos = find_match_paren(corr_ind_maxparen(&cur_curpos)); + + /* + * If we are looking for ',', we also look for matching + * braces. + */ + if (trypos == NULL && terminated == ',' + && find_last_paren(l, '{', '}')) + trypos = find_start_brace(); + + if (trypos != NULL) { + /* + * Check if we are on a case label now. This is + * handled above. + * case xx: if ( asdf && + * asdf) + */ + curwin->w_cursor = *trypos; + l = ml_get_curline(); + if (cin_iscase(l, FALSE) || cin_isscopedecl(l)) { + ++curwin->w_cursor.lnum; + curwin->w_cursor.col = 0; + continue; + } + } + + /* + * Skip over continuation lines to find the one to get the + * indent from + * char *usethis = "bla\ + * bla", + * here; + */ + if (terminated == ',') { + while (curwin->w_cursor.lnum > 1) { + l = ml_get(curwin->w_cursor.lnum - 1); + if (*l == NUL || l[STRLEN(l) - 1] != '\\') + break; + --curwin->w_cursor.lnum; + curwin->w_cursor.col = 0; + } + } + + /* + * Get indent and pointer to text for current line, + * ignoring any jump label. XXX + */ + if (!curbuf->b_ind_js) + cur_amount = skip_label(curwin->w_cursor.lnum, &l); + else + cur_amount = get_indent(); + /* + * If this is just above the line we are indenting, and it + * starts with a '{', line it up with this line. + * while (not) + * -> { + * } + */ + if (terminated != ',' && lookfor != LOOKFOR_TERM + && theline[0] == '{') { + amount = cur_amount; + /* + * Only add b_ind_open_extra when the current line + * doesn't start with a '{', which must have a match + * in the same line (scope is the same). Probably: + * { 1, 2 }, + * -> { 3, 4 } + */ + if (*skipwhite(l) != '{') + amount += curbuf->b_ind_open_extra; + + if (curbuf->b_ind_cpp_baseclass) { + /* have to look back, whether it is a cpp base + * class declaration or initialization */ + lookfor = LOOKFOR_CPP_BASECLASS; + continue; + } + break; + } + + /* + * Check if we are after an "if", "while", etc. + * Also allow " } else". + */ + if (cin_is_cinword(l) || cin_iselse(skipwhite(l))) { + /* + * Found an unterminated line after an if (), line up + * with the last one. + * if (cond) + * 100 + + * -> here; + */ + if (lookfor == LOOKFOR_UNTERM + || lookfor == LOOKFOR_ENUM_OR_INIT) { + if (cont_amount > 0) + amount = cont_amount; + else + amount += ind_continuation; + break; + } + + /* + * If this is just above the line we are indenting, we + * are finished. + * while (not) + * -> here; + * Otherwise this indent can be used when the line + * before this is terminated. + * yyy; + * if (stat) + * while (not) + * xxx; + * -> here; + */ + amount = cur_amount; + if (theline[0] == '{') + amount += curbuf->b_ind_open_extra; + if (lookfor != LOOKFOR_TERM) { + amount += curbuf->b_ind_level + + curbuf->b_ind_no_brace; + break; + } + + /* + * Special trick: when expecting the while () after a + * do, line up with the while() + * do + * x = 1; + * -> here + */ + l = skipwhite(ml_get_curline()); + if (cin_isdo(l)) { + if (whilelevel == 0) + break; + --whilelevel; + } + + /* + * When searching for a terminated line, don't use the + * one between the "if" and the matching "else". + * Need to use the scope of this "else". XXX + * If whilelevel != 0 continue looking for a "do {". + */ + if (cin_iselse(l) && whilelevel == 0) { + /* If we're looking at "} else", let's make sure we + * find the opening brace of the enclosing scope, + * not the one from "if () {". */ + if (*l == '}') + curwin->w_cursor.col = + (colnr_T)(l - ml_get_curline()) + 1; + + if ((trypos = find_start_brace()) == NULL + || find_match(LOOKFOR_IF, trypos->lnum) + == FAIL) + break; + } + } + /* + * If we're below an unterminated line that is not an + * "if" or something, we may line up with this line or + * add something for a continuation line, depending on + * the line before this one. + */ + else { + /* + * Found two unterminated lines on a row, line up with + * the last one. + * c = 99 + + * 100 + + * -> here; + */ + if (lookfor == LOOKFOR_UNTERM) { + /* When line ends in a comma add extra indent */ + if (terminated == ',') + amount += ind_continuation; + break; + } + + if (lookfor == LOOKFOR_ENUM_OR_INIT) { + /* Found two lines ending in ',', lineup with the + * lowest one, but check for cpp base class + * declaration/initialization, if it is an + * opening brace or we are looking just for + * enumerations/initializations. */ + if (terminated == ',') { + if (curbuf->b_ind_cpp_baseclass == 0) + break; + + lookfor = LOOKFOR_CPP_BASECLASS; + continue; + } + + /* Ignore unterminated lines in between, but + * reduce indent. */ + if (amount > cur_amount) + amount = cur_amount; + } else { + /* + * Found first unterminated line on a row, may + * line up with this line, remember its indent + * 100 + + * -> here; + */ + amount = cur_amount; + + /* + * If previous line ends in ',', check whether we + * are in an initialization or enum + * struct xxx = + * { + * sizeof a, + * 124 }; + * or a normal possible continuation line. + * but only, of no other statement has been found + * yet. + */ + if (lookfor == LOOKFOR_INITIAL && terminated == ',') { + lookfor = LOOKFOR_ENUM_OR_INIT; + cont_amount = cin_first_id_amount(); + } else { + if (lookfor == LOOKFOR_INITIAL + && *l != NUL + && l[STRLEN(l) - 1] == '\\') + /* XXX */ + cont_amount = cin_get_equal_amount( + curwin->w_cursor.lnum); + if (lookfor != LOOKFOR_TERM) + lookfor = LOOKFOR_UNTERM; + } + } + } + } + /* + * Check if we are after a while (cond); + * If so: Ignore until the matching "do". + */ + /* XXX */ + else if (cin_iswhileofdo_end(terminated)) { + /* + * Found an unterminated line after a while ();, line up + * with the last one. + * while (cond); + * 100 + <- line up with this one + * -> here; + */ + if (lookfor == LOOKFOR_UNTERM + || lookfor == LOOKFOR_ENUM_OR_INIT) { + if (cont_amount > 0) + amount = cont_amount; + else + amount += ind_continuation; + break; + } + + if (whilelevel == 0) { + lookfor = LOOKFOR_TERM; + amount = get_indent(); /* XXX */ + if (theline[0] == '{') + amount += curbuf->b_ind_open_extra; + } + ++whilelevel; + } + /* + * We are after a "normal" statement. + * If we had another statement we can stop now and use the + * indent of that other statement. + * Otherwise the indent of the current statement may be used, + * search backwards for the next "normal" statement. + */ + else { + /* + * Skip single break line, if before a switch label. It + * may be lined up with the case label. + */ + if (lookfor == LOOKFOR_NOBREAK + && cin_isbreak(skipwhite(ml_get_curline()))) { + lookfor = LOOKFOR_ANY; + continue; + } + + /* + * Handle "do {" line. + */ + if (whilelevel > 0) { + l = cin_skipcomment(ml_get_curline()); + if (cin_isdo(l)) { + amount = get_indent(); /* XXX */ + --whilelevel; + continue; + } + } + + /* + * Found a terminated line above an unterminated line. Add + * the amount for a continuation line. + * x = 1; + * y = foo + + * -> here; + * or + * int x = 1; + * int foo, + * -> here; + */ + if (lookfor == LOOKFOR_UNTERM + || lookfor == LOOKFOR_ENUM_OR_INIT) { + if (cont_amount > 0) + amount = cont_amount; + else + amount += ind_continuation; + break; + } + + /* + * Found a terminated line above a terminated line or "if" + * etc. line. Use the amount of the line below us. + * x = 1; x = 1; + * if (asdf) y = 2; + * while (asdf) ->here; + * here; + * ->foo; + */ + if (lookfor == LOOKFOR_TERM) { + if (!lookfor_break && whilelevel == 0) + break; + } + /* + * First line above the one we're indenting is terminated. + * To know what needs to be done look further backward for + * a terminated line. + */ + else { + /* + * position the cursor over the rightmost paren, so + * that matching it will take us back to the start of + * the line. Helps for: + * func(asdr, + * asdfasdf); + * here; + */ +term_again: + l = ml_get_curline(); + if (find_last_paren(l, '(', ')') + && (trypos = find_match_paren( + curbuf->b_ind_maxparen)) != NULL) { + /* + * Check if we are on a case label now. This is + * handled above. + * case xx: if ( asdf && + * asdf) + */ + curwin->w_cursor = *trypos; + l = ml_get_curline(); + if (cin_iscase(l, FALSE) || cin_isscopedecl(l)) { + ++curwin->w_cursor.lnum; + curwin->w_cursor.col = 0; + continue; + } + } + + /* When aligning with the case statement, don't align + * with a statement after it. + * case 1: { <-- don't use this { position + * stat; + * } + * case 2: + * stat; + * } + */ + iscase = (curbuf->b_ind_keep_case_label + && cin_iscase(l, FALSE)); + + /* + * Get indent and pointer to text for current line, + * ignoring any jump label. + */ + amount = skip_label(curwin->w_cursor.lnum, &l); + + if (theline[0] == '{') + amount += curbuf->b_ind_open_extra; + /* See remark above: "Only add b_ind_open_extra.." */ + l = skipwhite(l); + if (*l == '{') + amount -= curbuf->b_ind_open_extra; + lookfor = iscase ? LOOKFOR_ANY : LOOKFOR_TERM; + + /* + * When a terminated line starts with "else" skip to + * the matching "if": + * else 3; + * indent this; + * Need to use the scope of this "else". XXX + * If whilelevel != 0 continue looking for a "do {". + */ + if (lookfor == LOOKFOR_TERM + && *l != '}' + && cin_iselse(l) + && whilelevel == 0) { + if ((trypos = find_start_brace()) == NULL + || find_match(LOOKFOR_IF, trypos->lnum) + == FAIL) + break; + continue; + } + + /* + * If we're at the end of a block, skip to the start of + * that block. + */ + l = ml_get_curline(); + if (find_last_paren(l, '{', '}') /* XXX */ + && (trypos = find_start_brace()) != NULL) { + curwin->w_cursor = *trypos; + /* if not "else {" check for terminated again */ + /* but skip block for "} else {" */ + l = cin_skipcomment(ml_get_curline()); + if (*l == '}' || !cin_iselse(l)) + goto term_again; + ++curwin->w_cursor.lnum; + curwin->w_cursor.col = 0; + } + } + } + } + } + } + + /* add extra indent for a comment */ + if (cin_iscomment(theline)) + amount += curbuf->b_ind_comment; + + /* subtract extra left-shift for jump labels */ + if (curbuf->b_ind_jump_label > 0 && original_line_islabel) + amount -= curbuf->b_ind_jump_label; + } + /* + * ok -- we're not inside any sort of structure at all! + * + * this means we're at the top level, and everything should + * basically just match where the previous line is, except + * for the lines immediately following a function declaration, + * which are K&R-style parameters and need to be indented. + */ + else { + /* + * if our line starts with an open brace, forget about any + * prevailing indent and make sure it looks like the start + * of a function + */ + + if (theline[0] == '{') { + amount = curbuf->b_ind_first_open; + } + /* + * If the NEXT line is a function declaration, the current + * line needs to be indented as a function type spec. + * Don't do this if the current line looks like a comment or if the + * current line is terminated, ie. ends in ';', or if the current line + * contains { or }: "void f() {\n if (1)" + */ + else if (cur_curpos.lnum < curbuf->b_ml.ml_line_count + && !cin_nocode(theline) + && vim_strchr(theline, '{') == NULL + && vim_strchr(theline, '}') == NULL + && !cin_ends_in(theline, (char_u *)":", NULL) + && !cin_ends_in(theline, (char_u *)",", NULL) + && cin_isfuncdecl(NULL, cur_curpos.lnum + 1, + cur_curpos.lnum + 1) + && !cin_isterminated(theline, FALSE, TRUE)) { + amount = curbuf->b_ind_func_type; + } else { + amount = 0; + curwin->w_cursor = cur_curpos; + + /* search backwards until we find something we recognize */ + + while (curwin->w_cursor.lnum > 1) { + curwin->w_cursor.lnum--; + curwin->w_cursor.col = 0; + + l = ml_get_curline(); + + /* + * If we're in a comment now, skip to the start of the comment. + */ /* XXX */ + if ((trypos = ind_find_start_comment()) != NULL) { + curwin->w_cursor.lnum = trypos->lnum + 1; + curwin->w_cursor.col = 0; + continue; + } + + /* + * Are we at the start of a cpp base class declaration or + * constructor initialization? + */ /* XXX */ + n = FALSE; + if (curbuf->b_ind_cpp_baseclass != 0 && theline[0] != '{') { + n = cin_is_cpp_baseclass(&col); + l = ml_get_curline(); + } + if (n) { + /* XXX */ + amount = get_baseclass_amount(col); + break; + } + + /* + * Skip preprocessor directives and blank lines. + */ + if (cin_ispreproc_cont(&l, &curwin->w_cursor.lnum)) + continue; + + if (cin_nocode(l)) + continue; + + /* + * If the previous line ends in ',', use one level of + * indentation: + * int foo, + * bar; + * do this before checking for '}' in case of eg. + * enum foobar + * { + * ... + * } foo, + * bar; + */ + n = 0; + if (cin_ends_in(l, (char_u *)",", NULL) + || (*l != NUL && (n = l[STRLEN(l) - 1]) == '\\')) { + /* take us back to opening paren */ + if (find_last_paren(l, '(', ')') + && (trypos = find_match_paren( + curbuf->b_ind_maxparen)) != NULL) + curwin->w_cursor = *trypos; + + /* For a line ending in ',' that is a continuation line go + * back to the first line with a backslash: + * char *foo = "bla\ + * bla", + * here; + */ + while (n == 0 && curwin->w_cursor.lnum > 1) { + l = ml_get(curwin->w_cursor.lnum - 1); + if (*l == NUL || l[STRLEN(l) - 1] != '\\') + break; + --curwin->w_cursor.lnum; + curwin->w_cursor.col = 0; + } + + amount = get_indent(); /* XXX */ + + if (amount == 0) + amount = cin_first_id_amount(); + if (amount == 0) + amount = ind_continuation; + break; + } + + /* + * If the line looks like a function declaration, and we're + * not in a comment, put it the left margin. + */ + if (cin_isfuncdecl(NULL, cur_curpos.lnum, 0)) /* XXX */ + break; + l = ml_get_curline(); + + /* + * Finding the closing '}' of a previous function. Put + * current line at the left margin. For when 'cino' has "fs". + */ + if (*skipwhite(l) == '}') + break; + + /* (matching {) + * If the previous line ends on '};' (maybe followed by + * comments) align at column 0. For example: + * char *string_array[] = { "foo", + * / * x * / "b};ar" }; / * foobar * / + */ + if (cin_ends_in(l, (char_u *)"};", NULL)) + break; + + /* + * Find a line only has a semicolon that belongs to a previous + * line ending in '}', e.g. before an #endif. Don't increase + * indent then. + */ + if (*(look = skipwhite(l)) == ';' && cin_nocode(look + 1)) { + pos_T curpos_save = curwin->w_cursor; + + while (curwin->w_cursor.lnum > 1) { + look = ml_get(--curwin->w_cursor.lnum); + if (!(cin_nocode(look) || cin_ispreproc_cont( + &look, &curwin->w_cursor.lnum))) + break; + } + if (curwin->w_cursor.lnum > 0 + && cin_ends_in(look, (char_u *)"}", NULL)) + break; + + curwin->w_cursor = curpos_save; + } + + /* + * If the PREVIOUS line is a function declaration, the current + * line (and the ones that follow) needs to be indented as + * parameters. + */ + if (cin_isfuncdecl(&l, curwin->w_cursor.lnum, 0)) { + amount = curbuf->b_ind_param; + break; + } + + /* + * If the previous line ends in ';' and the line before the + * previous line ends in ',' or '\', ident to column zero: + * int foo, + * bar; + * indent_to_0 here; + */ + if (cin_ends_in(l, (char_u *)";", NULL)) { + l = ml_get(curwin->w_cursor.lnum - 1); + if (cin_ends_in(l, (char_u *)",", NULL) + || (*l != NUL && l[STRLEN(l) - 1] == '\\')) + break; + l = ml_get_curline(); + } + + /* + * Doesn't look like anything interesting -- so just + * use the indent of this line. + * + * Position the cursor over the rightmost paren, so that + * matching it will take us back to the start of the line. + */ + find_last_paren(l, '(', ')'); + + if ((trypos = find_match_paren(curbuf->b_ind_maxparen)) != NULL) + curwin->w_cursor = *trypos; + amount = get_indent(); /* XXX */ + break; + } + + /* add extra indent for a comment */ + if (cin_iscomment(theline)) + amount += curbuf->b_ind_comment; + + /* add extra indent if the previous line ended in a backslash: + * "asdfasdf\ + * here"; + * char *foo = "asdf\ + * here"; + */ + if (cur_curpos.lnum > 1) { + l = ml_get(cur_curpos.lnum - 1); + if (*l != NUL && l[STRLEN(l) - 1] == '\\') { + cur_amount = cin_get_equal_amount(cur_curpos.lnum - 1); + if (cur_amount > 0) + amount = cur_amount; + else if (cur_amount == 0) + amount += ind_continuation; + } + } + } + } + +theend: + /* put the cursor back where it belongs */ + curwin->w_cursor = cur_curpos; + + vim_free(linecopy); + + if (amount < 0) + return 0; + return amount; +} + +static int find_match(lookfor, ourscope) +int lookfor; +linenr_T ourscope; +{ + char_u *look; + pos_T *theirscope; + char_u *mightbeif; + int elselevel; + int whilelevel; + + if (lookfor == LOOKFOR_IF) { + elselevel = 1; + whilelevel = 0; + } else { + elselevel = 0; + whilelevel = 1; + } + + curwin->w_cursor.col = 0; + + while (curwin->w_cursor.lnum > ourscope + 1) { + curwin->w_cursor.lnum--; + curwin->w_cursor.col = 0; + + look = cin_skipcomment(ml_get_curline()); + if (cin_iselse(look) + || cin_isif(look) + || cin_isdo(look) /* XXX */ + || cin_iswhileofdo(look, curwin->w_cursor.lnum)) { + /* + * if we've gone outside the braces entirely, + * we must be out of scope... + */ + theirscope = find_start_brace(); /* XXX */ + if (theirscope == NULL) + break; + + /* + * and if the brace enclosing this is further + * back than the one enclosing the else, we're + * out of luck too. + */ + if (theirscope->lnum < ourscope) + break; + + /* + * and if they're enclosed in a *deeper* brace, + * then we can ignore it because it's in a + * different scope... + */ + if (theirscope->lnum > ourscope) + continue; + + /* + * if it was an "else" (that's not an "else if") + * then we need to go back to another if, so + * increment elselevel + */ + look = cin_skipcomment(ml_get_curline()); + if (cin_iselse(look)) { + mightbeif = cin_skipcomment(look + 4); + if (!cin_isif(mightbeif)) + ++elselevel; + continue; + } + + /* + * if it was a "while" then we need to go back to + * another "do", so increment whilelevel. XXX + */ + if (cin_iswhileofdo(look, curwin->w_cursor.lnum)) { + ++whilelevel; + continue; + } + + /* If it's an "if" decrement elselevel */ + look = cin_skipcomment(ml_get_curline()); + if (cin_isif(look)) { + elselevel--; + /* + * When looking for an "if" ignore "while"s that + * get in the way. + */ + if (elselevel == 0 && lookfor == LOOKFOR_IF) + whilelevel = 0; + } + + /* If it's a "do" decrement whilelevel */ + if (cin_isdo(look)) + whilelevel--; + + /* + * if we've used up all the elses, then + * this must be the if that we want! + * match the indent level of that if. + */ + if (elselevel <= 0 && whilelevel <= 0) { + return OK; + } + } + } + return FAIL; +} + +/* + * Get indent level from 'indentexpr'. + */ +int get_expr_indent() { + int indent; + pos_T save_pos; + colnr_T save_curswant; + int save_set_curswant; + int save_State; + int use_sandbox = was_set_insecurely((char_u *)"indentexpr", + OPT_LOCAL); + + /* Save and restore cursor position and curswant, in case it was changed + * via :normal commands */ + save_pos = curwin->w_cursor; + save_curswant = curwin->w_curswant; + save_set_curswant = curwin->w_set_curswant; + set_vim_var_nr(VV_LNUM, curwin->w_cursor.lnum); + if (use_sandbox) + ++sandbox; + ++textlock; + indent = eval_to_number(curbuf->b_p_inde); + if (use_sandbox) + --sandbox; + --textlock; + + /* Restore the cursor position so that 'indentexpr' doesn't need to. + * Pretend to be in Insert mode, allow cursor past end of line for "o" + * command. */ + save_State = State; + State = INSERT; + curwin->w_cursor = save_pos; + curwin->w_curswant = save_curswant; + curwin->w_set_curswant = save_set_curswant; + check_cursor(); + State = save_State; + + /* If there is an error, just keep the current indent. */ + if (indent < 0) + indent = get_indent(); + + return indent; +} + +static int lisp_match __ARGS((char_u *p)); + +static int lisp_match(p) +char_u *p; +{ + char_u buf[LSIZE]; + int len; + char_u *word = p_lispwords; + + while (*word != NUL) { + (void)copy_option_part(&word, buf, LSIZE, ","); + len = (int)STRLEN(buf); + if (STRNCMP(buf, p, len) == 0 && p[len] == ' ') + return TRUE; + } + return FALSE; +} + +/* + * When 'p' is present in 'cpoptions, a Vi compatible method is used. + * The incompatible newer method is quite a bit better at indenting + * code in lisp-like languages than the traditional one; it's still + * mostly heuristics however -- Dirk van Deun, dirk@rave.org + * + * TODO: + * Findmatch() should be adapted for lisp, also to make showmatch + * work correctly: now (v5.3) it seems all C/C++ oriented: + * - it does not recognize the #\( and #\) notations as character literals + * - it doesn't know about comments starting with a semicolon + * - it incorrectly interprets '(' as a character literal + * All this messes up get_lisp_indent in some rare cases. + * Update from Sergey Khorev: + * I tried to fix the first two issues. + */ +int get_lisp_indent() { + pos_T *pos, realpos, paren; + int amount; + char_u *that; + colnr_T col; + colnr_T firsttry; + int parencount, quotecount; + int vi_lisp; + + /* Set vi_lisp to use the vi-compatible method */ + vi_lisp = (vim_strchr(p_cpo, CPO_LISP) != NULL); + + realpos = curwin->w_cursor; + curwin->w_cursor.col = 0; + + if ((pos = findmatch(NULL, '(')) == NULL) + pos = findmatch(NULL, '['); + else { + paren = *pos; + pos = findmatch(NULL, '['); + if (pos == NULL || ltp(pos, &paren)) + pos = &paren; + } + if (pos != NULL) { + /* Extra trick: Take the indent of the first previous non-white + * line that is at the same () level. */ + amount = -1; + parencount = 0; + + while (--curwin->w_cursor.lnum >= pos->lnum) { + if (linewhite(curwin->w_cursor.lnum)) + continue; + for (that = ml_get_curline(); *that != NUL; ++that) { + if (*that == ';') { + while (*(that + 1) != NUL) + ++that; + continue; + } + if (*that == '\\') { + if (*(that + 1) != NUL) + ++that; + continue; + } + if (*that == '"' && *(that + 1) != NUL) { + while (*++that && *that != '"') { + /* skipping escaped characters in the string */ + if (*that == '\\') { + if (*++that == NUL) + break; + if (that[1] == NUL) { + ++that; + break; + } + } + } + } + if (*that == '(' || *that == '[') + ++parencount; + else if (*that == ')' || *that == ']') + --parencount; + } + if (parencount == 0) { + amount = get_indent(); + break; + } + } + + if (amount == -1) { + curwin->w_cursor.lnum = pos->lnum; + curwin->w_cursor.col = pos->col; + col = pos->col; + + that = ml_get_curline(); + + if (vi_lisp && get_indent() == 0) + amount = 2; + else { + amount = 0; + while (*that && col) { + amount += lbr_chartabsize_adv(&that, (colnr_T)amount); + col--; + } + + /* + * Some keywords require "body" indenting rules (the + * non-standard-lisp ones are Scheme special forms): + * + * (let ((a 1)) instead (let ((a 1)) + * (...)) of (...)) + */ + + if (!vi_lisp && (*that == '(' || *that == '[') + && lisp_match(that + 1)) + amount += 2; + else { + that++; + amount++; + firsttry = amount; + + while (vim_iswhite(*that)) { + amount += lbr_chartabsize(that, (colnr_T)amount); + ++that; + } + + if (*that && *that != ';') { /* not a comment line */ + /* test *that != '(' to accommodate first let/do + * argument if it is more than one line */ + if (!vi_lisp && *that != '(' && *that != '[') + firsttry++; + + parencount = 0; + quotecount = 0; + + if (vi_lisp + || (*that != '"' + && *that != '\'' + && *that != '#' + && (*that < '0' || *that > '9'))) { + while (*that + && (!vim_iswhite(*that) + || quotecount + || parencount) + && (!((*that == '(' || *that == '[') + && !quotecount + && !parencount + && vi_lisp))) { + if (*that == '"') + quotecount = !quotecount; + if ((*that == '(' || *that == '[') + && !quotecount) + ++parencount; + if ((*that == ')' || *that == ']') + && !quotecount) + --parencount; + if (*that == '\\' && *(that+1) != NUL) + amount += lbr_chartabsize_adv(&that, + (colnr_T)amount); + amount += lbr_chartabsize_adv(&that, + (colnr_T)amount); + } + } + while (vim_iswhite(*that)) { + amount += lbr_chartabsize(that, (colnr_T)amount); + that++; + } + if (!*that || *that == ';') + amount = firsttry; + } + } + } + } + } else + amount = 0; /* no matching '(' or '[' found, use zero indent */ + + curwin->w_cursor = realpos; + + return amount; +} + +void prepare_to_exit() { +#if defined(SIGHUP) && defined(SIG_IGN) + /* Ignore SIGHUP, because a dropped connection causes a read error, which + * makes Vim exit and then handling SIGHUP causes various reentrance + * problems. */ + signal(SIGHUP, SIG_IGN); +#endif + + { + windgoto((int)Rows - 1, 0); + + /* + * Switch terminal mode back now, so messages end up on the "normal" + * screen (if there are two screens). + */ + settmode(TMODE_COOK); + stoptermcap(); + out_flush(); + } +} + +/* + * Preserve files and exit. + * When called IObuff must contain a message. + * NOTE: This may be called from deathtrap() in a signal handler, avoid unsafe + * functions, such as allocating memory. + */ +void preserve_exit() { + buf_T *buf; + + prepare_to_exit(); + + /* Setting this will prevent free() calls. That avoids calling free() + * recursively when free() was invoked with a bad pointer. */ + really_exiting = TRUE; + + out_str(IObuff); + screen_start(); /* don't know where cursor is now */ + out_flush(); + + ml_close_notmod(); /* close all not-modified buffers */ + + for (buf = firstbuf; buf != NULL; buf = buf->b_next) { + if (buf->b_ml.ml_mfp != NULL && buf->b_ml.ml_mfp->mf_fname != NULL) { + OUT_STR("Vim: preserving files...\n"); + screen_start(); /* don't know where cursor is now */ + out_flush(); + ml_sync_all(FALSE, FALSE); /* preserve all swap files */ + break; + } + } + + ml_close_all(FALSE); /* close all memfiles, without deleting */ + + OUT_STR("Vim: Finished.\n"); + + getout(1); +} + +/* + * return TRUE if "fname" exists. + */ +int vim_fexists(fname) +char_u *fname; +{ + struct stat st; + + if (mch_stat((char *)fname, &st)) + return FALSE; + return TRUE; +} + +/* + * Check for CTRL-C pressed, but only once in a while. + * Should be used instead of ui_breakcheck() for functions that check for + * each line in the file. Calling ui_breakcheck() each time takes too much + * time, because it can be a system call. + */ + +#ifndef BREAKCHECK_SKIP +# define BREAKCHECK_SKIP 32 +#endif + +static int breakcheck_count = 0; + +void line_breakcheck() { + if (++breakcheck_count >= BREAKCHECK_SKIP) { + breakcheck_count = 0; + ui_breakcheck(); + } +} + +/* + * Like line_breakcheck() but check 10 times less often. + */ +void fast_breakcheck() { + if (++breakcheck_count >= BREAKCHECK_SKIP * 10) { + breakcheck_count = 0; + ui_breakcheck(); + } +} + +/* + * Invoke expand_wildcards() for one pattern. + * Expand items like "%:h" before the expansion. + * Returns OK or FAIL. + */ +int expand_wildcards_eval(pat, num_file, file, flags) +char_u **pat; /* pointer to input pattern */ +int *num_file; /* resulting number of files */ +char_u ***file; /* array of resulting files */ +int flags; /* EW_DIR, etc. */ +{ + int ret = FAIL; + char_u *eval_pat = NULL; + char_u *exp_pat = *pat; + char_u *ignored_msg; + int usedlen; + + if (*exp_pat == '%' || *exp_pat == '#' || *exp_pat == '<') { + ++emsg_off; + eval_pat = eval_vars(exp_pat, exp_pat, &usedlen, + NULL, &ignored_msg, NULL); + --emsg_off; + if (eval_pat != NULL) + exp_pat = concat_str(eval_pat, exp_pat + usedlen); + } + + if (exp_pat != NULL) + ret = expand_wildcards(1, &exp_pat, num_file, file, flags); + + if (eval_pat != NULL) { + vim_free(exp_pat); + vim_free(eval_pat); + } + + return ret; +} + +/* + * Expand wildcards. Calls gen_expand_wildcards() and removes files matching + * 'wildignore'. + * Returns OK or FAIL. When FAIL then "num_file" won't be set. + */ +int expand_wildcards(num_pat, pat, num_file, file, flags) +int num_pat; /* number of input patterns */ +char_u **pat; /* array of input patterns */ +int *num_file; /* resulting number of files */ +char_u ***file; /* array of resulting files */ +int flags; /* EW_DIR, etc. */ +{ + int retval; + int i, j; + char_u *p; + int non_suf_match; /* number without matching suffix */ + + retval = gen_expand_wildcards(num_pat, pat, num_file, file, flags); + + /* When keeping all matches, return here */ + if ((flags & EW_KEEPALL) || retval == FAIL) + return retval; + + /* + * Remove names that match 'wildignore'. + */ + if (*p_wig) { + char_u *ffname; + + /* check all files in (*file)[] */ + for (i = 0; i < *num_file; ++i) { + ffname = FullName_save((*file)[i], FALSE); + if (ffname == NULL) /* out of memory */ + break; + if (match_file_list(p_wig, (*file)[i], ffname)) { + /* remove this matching file from the list */ + vim_free((*file)[i]); + for (j = i; j + 1 < *num_file; ++j) + (*file)[j] = (*file)[j + 1]; + --*num_file; + --i; + } + vim_free(ffname); + } + } + + /* + * Move the names where 'suffixes' match to the end. + */ + if (*num_file > 1) { + non_suf_match = 0; + for (i = 0; i < *num_file; ++i) { + if (!match_suffix((*file)[i])) { + /* + * Move the name without matching suffix to the front + * of the list. + */ + p = (*file)[i]; + for (j = i; j > non_suf_match; --j) + (*file)[j] = (*file)[j - 1]; + (*file)[non_suf_match++] = p; + } + } + } + + return retval; +} + +/* + * Return TRUE if "fname" matches with an entry in 'suffixes'. + */ +int match_suffix(fname) +char_u *fname; +{ + int fnamelen, setsuflen; + char_u *setsuf; +#define MAXSUFLEN 30 /* maximum length of a file suffix */ + char_u suf_buf[MAXSUFLEN]; + + fnamelen = (int)STRLEN(fname); + setsuflen = 0; + for (setsuf = p_su; *setsuf; ) { + setsuflen = copy_option_part(&setsuf, suf_buf, MAXSUFLEN, ".,"); + if (setsuflen == 0) { + char_u *tail = gettail(fname); + + /* empty entry: match name without a '.' */ + if (vim_strchr(tail, '.') == NULL) { + setsuflen = 1; + break; + } + } else { + if (fnamelen >= setsuflen + && fnamencmp(suf_buf, fname + fnamelen - setsuflen, + (size_t)setsuflen) == 0) + break; + setsuflen = 0; + } + } + return setsuflen != 0; +} + +#if !defined(NO_EXPANDPATH) || defined(PROTO) + +static int vim_backtick __ARGS((char_u *p)); +static int expand_backtick __ARGS((garray_T *gap, char_u *pat, int flags)); + + +#if (defined(UNIX) && !defined(VMS)) || defined(USE_UNIXFILENAME) \ + || defined(PROTO) +/* + * Unix style wildcard expansion code. + * It's here because it's used both for Unix and Mac. + */ +static int pstrcmp __ARGS((const void *, const void *)); + +static int pstrcmp(a, b) +const void *a, *b; +{ + return pathcmp(*(char **)a, *(char **)b, -1); +} + +/* + * Recursively expand one path component into all matching files and/or + * directories. Adds matches to "gap". Handles "*", "?", "[a-z]", "**", etc. + * "path" has backslashes before chars that are not to be expanded, starting + * at "path + wildoff". + * Return the number of matches found. + * NOTE: much of this is identical to dos_expandpath(), keep in sync! + */ +int unix_expandpath(gap, path, wildoff, flags, didstar) +garray_T *gap; +char_u *path; +int wildoff; +int flags; /* EW_* flags */ +int didstar; /* expanded "**" once already */ +{ + char_u *buf; + char_u *path_end; + char_u *p, *s, *e; + int start_len = gap->ga_len; + char_u *pat; + regmatch_T regmatch; + int starts_with_dot; + int matches; + int len; + int starstar = FALSE; + static int stardepth = 0; /* depth for "**" expansion */ + + DIR *dirp; + struct dirent *dp; + + /* Expanding "**" may take a long time, check for CTRL-C. */ + if (stardepth > 0) { + ui_breakcheck(); + if (got_int) + return 0; + } + + /* make room for file name */ + buf = alloc((int)STRLEN(path) + BASENAMELEN + 5); + if (buf == NULL) + return 0; + + /* + * Find the first part in the path name that contains a wildcard. + * When EW_ICASE is set every letter is considered to be a wildcard. + * Copy it into "buf", including the preceding characters. + */ + p = buf; + s = buf; + e = NULL; + path_end = path; + while (*path_end != NUL) { + /* May ignore a wildcard that has a backslash before it; it will + * be removed by rem_backslash() or file_pat_to_reg_pat() below. */ + if (path_end >= path + wildoff && rem_backslash(path_end)) + *p++ = *path_end++; + else if (*path_end == '/') { + if (e != NULL) + break; + s = p + 1; + } else if (path_end >= path + wildoff + && (vim_strchr((char_u *)"*?[{~$", *path_end) != NULL + || (!p_fic && (flags & EW_ICASE) + && isalpha(PTR2CHAR(path_end))))) + e = p; + if (has_mbyte) { + len = (*mb_ptr2len)(path_end); + STRNCPY(p, path_end, len); + p += len; + path_end += len; + } else + *p++ = *path_end++; + } + e = p; + *e = NUL; + + /* Now we have one wildcard component between "s" and "e". */ + /* Remove backslashes between "wildoff" and the start of the wildcard + * component. */ + for (p = buf + wildoff; p < s; ++p) + if (rem_backslash(p)) { + STRMOVE(p, p + 1); + --e; + --s; + } + + /* Check for "**" between "s" and "e". */ + for (p = s; p < e; ++p) + if (p[0] == '*' && p[1] == '*') + starstar = TRUE; + + /* convert the file pattern to a regexp pattern */ + starts_with_dot = (*s == '.'); + pat = file_pat_to_reg_pat(s, e, NULL, FALSE); + if (pat == NULL) { + vim_free(buf); + return 0; + } + + /* compile the regexp into a program */ + if (flags & EW_ICASE) + regmatch.rm_ic = TRUE; /* 'wildignorecase' set */ + else + regmatch.rm_ic = p_fic; /* ignore case when 'fileignorecase' is set */ + if (flags & (EW_NOERROR | EW_NOTWILD)) + ++emsg_silent; + regmatch.regprog = vim_regcomp(pat, RE_MAGIC); + if (flags & (EW_NOERROR | EW_NOTWILD)) + --emsg_silent; + vim_free(pat); + + if (regmatch.regprog == NULL && (flags & EW_NOTWILD) == 0) { + vim_free(buf); + return 0; + } + + /* If "**" is by itself, this is the first time we encounter it and more + * is following then find matches without any directory. */ + if (!didstar && stardepth < 100 && starstar && e - s == 2 + && *path_end == '/') { + STRCPY(s, path_end + 1); + ++stardepth; + (void)unix_expandpath(gap, buf, (int)(s - buf), flags, TRUE); + --stardepth; + } + + /* open the directory for scanning */ + *s = NUL; + dirp = opendir(*buf == NUL ? "." : (char *)buf); + + /* Find all matching entries */ + if (dirp != NULL) { + for (;; ) { + dp = readdir(dirp); + if (dp == NULL) + break; + if ((dp->d_name[0] != '.' || starts_with_dot) + && ((regmatch.regprog != NULL && vim_regexec(®match, + (char_u *)dp->d_name, (colnr_T)0)) + || ((flags & EW_NOTWILD) + && fnamencmp(path + (s - buf), dp->d_name, e - s) == 0))) { + STRCPY(s, dp->d_name); + len = STRLEN(buf); + + if (starstar && stardepth < 100) { + /* For "**" in the pattern first go deeper in the tree to + * find matches. */ + STRCPY(buf + len, "/**"); + STRCPY(buf + len + 3, path_end); + ++stardepth; + (void)unix_expandpath(gap, buf, len + 1, flags, TRUE); + --stardepth; + } + + STRCPY(buf + len, path_end); + if (mch_has_exp_wildcard(path_end)) { /* handle more wildcards */ + /* need to expand another component of the path */ + /* remove backslashes for the remaining components only */ + (void)unix_expandpath(gap, buf, len + 1, flags, FALSE); + } else { + /* no more wildcards, check if there is a match */ + /* remove backslashes for the remaining components only */ + if (*path_end != NUL) + backslash_halve(buf + len + 1); + if (mch_getperm(buf) >= 0) { /* add existing file */ +#ifdef MACOS_CONVERT + size_t precomp_len = STRLEN(buf)+1; + char_u *precomp_buf = + mac_precompose_path(buf, precomp_len, &precomp_len); + + if (precomp_buf) { + mch_memmove(buf, precomp_buf, precomp_len); + vim_free(precomp_buf); + } +#endif + addfile(gap, buf, flags); + } + } + } + } + + closedir(dirp); + } + + vim_free(buf); + vim_regfree(regmatch.regprog); + + matches = gap->ga_len - start_len; + if (matches > 0) + qsort(((char_u **)gap->ga_data) + start_len, matches, + sizeof(char_u *), pstrcmp); + return matches; +} +#endif + +static int find_previous_pathsep __ARGS((char_u *path, char_u **psep)); +static int is_unique __ARGS((char_u *maybe_unique, garray_T *gap, int i)); +static void expand_path_option __ARGS((char_u *curdir, garray_T *gap)); +static char_u *get_path_cutoff __ARGS((char_u *fname, garray_T *gap)); +static void uniquefy_paths __ARGS((garray_T *gap, char_u *pattern)); +static int expand_in_path __ARGS((garray_T *gap, char_u *pattern, int flags)); + +/* + * Moves "*psep" back to the previous path separator in "path". + * Returns FAIL is "*psep" ends up at the beginning of "path". + */ +static int find_previous_pathsep(path, psep) +char_u *path; +char_u **psep; +{ + /* skip the current separator */ + if (*psep > path && vim_ispathsep(**psep)) + --*psep; + + /* find the previous separator */ + while (*psep > path) { + if (vim_ispathsep(**psep)) + return OK; + mb_ptr_back(path, *psep); + } + + return FAIL; +} + +/* + * Returns TRUE if "maybe_unique" is unique wrt other_paths in "gap". + * "maybe_unique" is the end portion of "((char_u **)gap->ga_data)[i]". + */ +static int is_unique(maybe_unique, gap, i) +char_u *maybe_unique; +garray_T *gap; +int i; +{ + int j; + int candidate_len; + int other_path_len; + char_u **other_paths = (char_u **)gap->ga_data; + char_u *rival; + + for (j = 0; j < gap->ga_len; j++) { + if (j == i) + continue; /* don't compare it with itself */ + + candidate_len = (int)STRLEN(maybe_unique); + other_path_len = (int)STRLEN(other_paths[j]); + if (other_path_len < candidate_len) + continue; /* it's different when it's shorter */ + + rival = other_paths[j] + other_path_len - candidate_len; + if (fnamecmp(maybe_unique, rival) == 0 + && (rival == other_paths[j] || vim_ispathsep(*(rival - 1)))) + return FALSE; /* match */ + } + + return TRUE; /* no match found */ +} + +/* + * Split the 'path' option into an array of strings in garray_T. Relative + * paths are expanded to their equivalent fullpath. This includes the "." + * (relative to current buffer directory) and empty path (relative to current + * directory) notations. + * + * TODO: handle upward search (;) and path limiter (**N) notations by + * expanding each into their equivalent path(s). + */ +static void expand_path_option(curdir, gap) +char_u *curdir; +garray_T *gap; +{ + char_u *path_option = *curbuf->b_p_path == NUL + ? p_path : curbuf->b_p_path; + char_u *buf; + char_u *p; + int len; + + if ((buf = alloc((int)MAXPATHL)) == NULL) + return; + + while (*path_option != NUL) { + copy_option_part(&path_option, buf, MAXPATHL, " ,"); + + if (buf[0] == '.' && (buf[1] == NUL || vim_ispathsep(buf[1]))) { + /* Relative to current buffer: + * "/path/file" + "." -> "/path/" + * "/path/file" + "./subdir" -> "/path/subdir" */ + if (curbuf->b_ffname == NULL) + continue; + p = gettail(curbuf->b_ffname); + len = (int)(p - curbuf->b_ffname); + if (len + (int)STRLEN(buf) >= MAXPATHL) + continue; + if (buf[1] == NUL) + buf[len] = NUL; + else + STRMOVE(buf + len, buf + 2); + mch_memmove(buf, curbuf->b_ffname, len); + simplify_filename(buf); + } else if (buf[0] == NUL) + /* relative to current directory */ + STRCPY(buf, curdir); + else if (path_with_url(buf)) + /* URL can't be used here */ + continue; + else if (!mch_isFullName(buf)) { + /* Expand relative path to their full path equivalent */ + len = (int)STRLEN(curdir); + if (len + (int)STRLEN(buf) + 3 > MAXPATHL) + continue; + STRMOVE(buf + len + 1, buf); + STRCPY(buf, curdir); + buf[len] = PATHSEP; + simplify_filename(buf); + } + + if (ga_grow(gap, 1) == FAIL) + break; + + + p = vim_strsave(buf); + if (p == NULL) + break; + ((char_u **)gap->ga_data)[gap->ga_len++] = p; + } + + vim_free(buf); +} + +/* + * Returns a pointer to the file or directory name in "fname" that matches the + * longest path in "ga"p, or NULL if there is no match. For example: + * + * path: /foo/bar/baz + * fname: /foo/bar/baz/quux.txt + * returns: ^this + */ +static char_u * get_path_cutoff(fname, gap) +char_u *fname; +garray_T *gap; +{ + int i; + int maxlen = 0; + char_u **path_part = (char_u **)gap->ga_data; + char_u *cutoff = NULL; + + for (i = 0; i < gap->ga_len; i++) { + int j = 0; + + while ((fname[j] == path_part[i][j] + ) && fname[j] != NUL && path_part[i][j] != NUL) + j++; + if (j > maxlen) { + maxlen = j; + cutoff = &fname[j]; + } + } + + /* skip to the file or directory name */ + if (cutoff != NULL) + while (vim_ispathsep(*cutoff)) + mb_ptr_adv(cutoff); + + return cutoff; +} + +/* + * Sorts, removes duplicates and modifies all the fullpath names in "gap" so + * that they are unique with respect to each other while conserving the part + * that matches the pattern. Beware, this is at least O(n^2) wrt "gap->ga_len". + */ +static void uniquefy_paths(gap, pattern) +garray_T *gap; +char_u *pattern; +{ + int i; + int len; + char_u **fnames = (char_u **)gap->ga_data; + int sort_again = FALSE; + char_u *pat; + char_u *file_pattern; + char_u *curdir; + regmatch_T regmatch; + garray_T path_ga; + char_u **in_curdir = NULL; + char_u *short_name; + + remove_duplicates(gap); + ga_init2(&path_ga, (int)sizeof(char_u *), 1); + + /* + * We need to prepend a '*' at the beginning of file_pattern so that the + * regex matches anywhere in the path. FIXME: is this valid for all + * possible patterns? + */ + len = (int)STRLEN(pattern); + file_pattern = alloc(len + 2); + if (file_pattern == NULL) + return; + file_pattern[0] = '*'; + file_pattern[1] = NUL; + STRCAT(file_pattern, pattern); + pat = file_pat_to_reg_pat(file_pattern, NULL, NULL, TRUE); + vim_free(file_pattern); + if (pat == NULL) + return; + + regmatch.rm_ic = TRUE; /* always ignore case */ + regmatch.regprog = vim_regcomp(pat, RE_MAGIC + RE_STRING); + vim_free(pat); + if (regmatch.regprog == NULL) + return; + + if ((curdir = alloc((int)(MAXPATHL))) == NULL) + goto theend; + mch_dirname(curdir, MAXPATHL); + expand_path_option(curdir, &path_ga); + + in_curdir = (char_u **)alloc_clear(gap->ga_len * sizeof(char_u *)); + if (in_curdir == NULL) + goto theend; + + for (i = 0; i < gap->ga_len && !got_int; i++) { + char_u *path = fnames[i]; + int is_in_curdir; + char_u *dir_end = gettail_dir(path); + char_u *pathsep_p; + char_u *path_cutoff; + + len = (int)STRLEN(path); + is_in_curdir = fnamencmp(curdir, path, dir_end - path) == 0 + && curdir[dir_end - path] == NUL; + if (is_in_curdir) + in_curdir[i] = vim_strsave(path); + + /* Shorten the filename while maintaining its uniqueness */ + path_cutoff = get_path_cutoff(path, &path_ga); + + /* we start at the end of the path */ + pathsep_p = path + len - 1; + + while (find_previous_pathsep(path, &pathsep_p)) + if (vim_regexec(®match, pathsep_p + 1, (colnr_T)0) + && is_unique(pathsep_p + 1, gap, i) + && path_cutoff != NULL && pathsep_p + 1 >= path_cutoff) { + sort_again = TRUE; + mch_memmove(path, pathsep_p + 1, STRLEN(pathsep_p)); + break; + } + + if (mch_isFullName(path)) { + /* + * Last resort: shorten relative to curdir if possible. + * 'possible' means: + * 1. It is under the current directory. + * 2. The result is actually shorter than the original. + * + * Before curdir After + * /foo/bar/file.txt /foo/bar ./file.txt + * c:\foo\bar\file.txt c:\foo\bar .\file.txt + * /file.txt / /file.txt + * c:\file.txt c:\ .\file.txt + */ + short_name = shorten_fname(path, curdir); + if (short_name != NULL && short_name > path + 1 + ) { + STRCPY(path, "."); + add_pathsep(path); + STRMOVE(path + STRLEN(path), short_name); + } + } + ui_breakcheck(); + } + + /* Shorten filenames in /in/current/directory/{filename} */ + for (i = 0; i < gap->ga_len && !got_int; i++) { + char_u *rel_path; + char_u *path = in_curdir[i]; + + if (path == NULL) + continue; + + /* If the {filename} is not unique, change it to ./{filename}. + * Else reduce it to {filename} */ + short_name = shorten_fname(path, curdir); + if (short_name == NULL) + short_name = path; + if (is_unique(short_name, gap, i)) { + STRCPY(fnames[i], short_name); + continue; + } + + rel_path = alloc((int)(STRLEN(short_name) + STRLEN(PATHSEPSTR) + 2)); + if (rel_path == NULL) + goto theend; + STRCPY(rel_path, "."); + add_pathsep(rel_path); + STRCAT(rel_path, short_name); + + vim_free(fnames[i]); + fnames[i] = rel_path; + sort_again = TRUE; + ui_breakcheck(); + } + +theend: + vim_free(curdir); + if (in_curdir != NULL) { + for (i = 0; i < gap->ga_len; i++) + vim_free(in_curdir[i]); + vim_free(in_curdir); + } + ga_clear_strings(&path_ga); + vim_regfree(regmatch.regprog); + + if (sort_again) + remove_duplicates(gap); +} + +/* + * Calls globpath() with 'path' values for the given pattern and stores the + * result in "gap". + * Returns the total number of matches. + */ +static int expand_in_path(gap, pattern, flags) +garray_T *gap; +char_u *pattern; +int flags; /* EW_* flags */ +{ + char_u *curdir; + garray_T path_ga; + char_u *files = NULL; + char_u *s; /* start */ + char_u *e; /* end */ + char_u *paths = NULL; + + if ((curdir = alloc((unsigned)MAXPATHL)) == NULL) + return 0; + mch_dirname(curdir, MAXPATHL); + + ga_init2(&path_ga, (int)sizeof(char_u *), 1); + expand_path_option(curdir, &path_ga); + vim_free(curdir); + if (path_ga.ga_len == 0) + return 0; + + paths = ga_concat_strings(&path_ga); + ga_clear_strings(&path_ga); + if (paths == NULL) + return 0; + + files = globpath(paths, pattern, (flags & EW_ICASE) ? WILD_ICASE : 0); + vim_free(paths); + if (files == NULL) + return 0; + + /* Copy each path in files into gap */ + s = e = files; + while (*s != NUL) { + while (*e != '\n' && *e != NUL) + e++; + if (*e == NUL) { + addfile(gap, s, flags); + break; + } else { + /* *e is '\n' */ + *e = NUL; + addfile(gap, s, flags); + e++; + s = e; + } + } + vim_free(files); + + return gap->ga_len; +} + +/* + * Sort "gap" and remove duplicate entries. "gap" is expected to contain a + * list of file names in allocated memory. + */ +void remove_duplicates(gap) +garray_T *gap; +{ + int i; + int j; + char_u **fnames = (char_u **)gap->ga_data; + + sort_strings(fnames, gap->ga_len); + for (i = gap->ga_len - 1; i > 0; --i) + if (fnamecmp(fnames[i - 1], fnames[i]) == 0) { + vim_free(fnames[i]); + for (j = i + 1; j < gap->ga_len; ++j) + fnames[j - 1] = fnames[j]; + --gap->ga_len; + } +} + +static int has_env_var __ARGS((char_u *p)); + +/* + * Return TRUE if "p" contains what looks like an environment variable. + * Allowing for escaping. + */ +static int has_env_var(p) +char_u *p; +{ + for (; *p; mb_ptr_adv(p)) { + if (*p == '\\' && p[1] != NUL) + ++p; + else if (vim_strchr((char_u *) + "$" + , *p) != NULL) + return TRUE; + } + return FALSE; +} + +#ifdef SPECIAL_WILDCHAR +static int has_special_wildchar __ARGS((char_u *p)); + +/* + * Return TRUE if "p" contains a special wildcard character. + * Allowing for escaping. + */ +static int has_special_wildchar(p) +char_u *p; +{ + for (; *p; mb_ptr_adv(p)) { + if (*p == '\\' && p[1] != NUL) + ++p; + else if (vim_strchr((char_u *)SPECIAL_WILDCHAR, *p) != NULL) + return TRUE; + } + return FALSE; +} +#endif + +/* + * Generic wildcard expansion code. + * + * Characters in "pat" that should not be expanded must be preceded with a + * backslash. E.g., "/path\ with\ spaces/my\*star*" + * + * Return FAIL when no single file was found. In this case "num_file" is not + * set, and "file" may contain an error message. + * Return OK when some files found. "num_file" is set to the number of + * matches, "file" to the array of matches. Call FreeWild() later. + */ +int gen_expand_wildcards(num_pat, pat, num_file, file, flags) +int num_pat; /* number of input patterns */ +char_u **pat; /* array of input patterns */ +int *num_file; /* resulting number of files */ +char_u ***file; /* array of resulting files */ +int flags; /* EW_* flags */ +{ + int i; + garray_T ga; + char_u *p; + static int recursive = FALSE; + int add_pat; + int did_expand_in_path = FALSE; + + /* + * expand_env() is called to expand things like "~user". If this fails, + * it calls ExpandOne(), which brings us back here. In this case, always + * call the machine specific expansion function, if possible. Otherwise, + * return FAIL. + */ + if (recursive) +#ifdef SPECIAL_WILDCHAR + return mch_expand_wildcards(num_pat, pat, num_file, file, flags); +#else + return FAIL; +#endif + +#ifdef SPECIAL_WILDCHAR + /* + * If there are any special wildcard characters which we cannot handle + * here, call machine specific function for all the expansion. This + * avoids starting the shell for each argument separately. + * For `=expr` do use the internal function. + */ + for (i = 0; i < num_pat; i++) { + if (has_special_wildchar(pat[i]) + && !(vim_backtick(pat[i]) && pat[i][1] == '=') + ) + return mch_expand_wildcards(num_pat, pat, num_file, file, flags); + } +#endif + + recursive = TRUE; + + /* + * The matching file names are stored in a growarray. Init it empty. + */ + ga_init2(&ga, (int)sizeof(char_u *), 30); + + for (i = 0; i < num_pat; ++i) { + add_pat = -1; + p = pat[i]; + + if (vim_backtick(p)) + add_pat = expand_backtick(&ga, p, flags); + else { + /* + * First expand environment variables, "~/" and "~user/". + */ + if (has_env_var(p) || *p == '~') { + p = expand_env_save_opt(p, TRUE); + if (p == NULL) + p = pat[i]; +#ifdef UNIX + /* + * On Unix, if expand_env() can't expand an environment + * variable, use the shell to do that. Discard previously + * found file names and start all over again. + */ + else if (has_env_var(p) || *p == '~') { + vim_free(p); + ga_clear_strings(&ga); + i = mch_expand_wildcards(num_pat, pat, num_file, file, + flags); + recursive = FALSE; + return i; + } +#endif + } + + /* + * If there are wildcards: Expand file names and add each match to + * the list. If there is no match, and EW_NOTFOUND is given, add + * the pattern. + * If there are no wildcards: Add the file name if it exists or + * when EW_NOTFOUND is given. + */ + if (mch_has_exp_wildcard(p)) { + if ((flags & EW_PATH) + && !mch_isFullName(p) + && !(p[0] == '.' + && (vim_ispathsep(p[1]) + || (p[1] == '.' && vim_ispathsep(p[2])))) + ) { + /* :find completion where 'path' is used. + * Recursiveness is OK here. */ + recursive = FALSE; + add_pat = expand_in_path(&ga, p, flags); + recursive = TRUE; + did_expand_in_path = TRUE; + } else + add_pat = mch_expandpath(&ga, p, flags); + } + } + + if (add_pat == -1 || (add_pat == 0 && (flags & EW_NOTFOUND))) { + char_u *t = backslash_halve_save(p); + + /* When EW_NOTFOUND is used, always add files and dirs. Makes + * "vim c:/" work. */ + if (flags & EW_NOTFOUND) + addfile(&ga, t, flags | EW_DIR | EW_FILE); + else if (mch_getperm(t) >= 0) + addfile(&ga, t, flags); + vim_free(t); + } + + if (did_expand_in_path && ga.ga_len > 0 && (flags & EW_PATH)) + uniquefy_paths(&ga, p); + if (p != pat[i]) + vim_free(p); + } + + *num_file = ga.ga_len; + *file = (ga.ga_data != NULL) ? (char_u **)ga.ga_data : (char_u **)""; + + recursive = FALSE; + + return (ga.ga_data != NULL) ? OK : FAIL; +} + + +/* + * Return TRUE if we can expand this backtick thing here. + */ +static int vim_backtick(p) +char_u *p; +{ + return *p == '`' && *(p + 1) != NUL && *(p + STRLEN(p) - 1) == '`'; +} + +/* + * Expand an item in `backticks` by executing it as a command. + * Currently only works when pat[] starts and ends with a `. + * Returns number of file names found. + */ +static int expand_backtick(gap, pat, flags) +garray_T *gap; +char_u *pat; +int flags; /* EW_* flags */ +{ + char_u *p; + char_u *cmd; + char_u *buffer; + int cnt = 0; + int i; + + /* Create the command: lop off the backticks. */ + cmd = vim_strnsave(pat + 1, (int)STRLEN(pat) - 2); + if (cmd == NULL) + return 0; + + if (*cmd == '=') /* `={expr}`: Expand expression */ + buffer = eval_to_string(cmd + 1, &p, TRUE); + else + buffer = get_cmd_output(cmd, NULL, + (flags & EW_SILENT) ? SHELL_SILENT : 0); + vim_free(cmd); + if (buffer == NULL) + return 0; + + cmd = buffer; + while (*cmd != NUL) { + cmd = skipwhite(cmd); /* skip over white space */ + p = cmd; + while (*p != NUL && *p != '\r' && *p != '\n') /* skip over entry */ + ++p; + /* add an entry if it is not empty */ + if (p > cmd) { + i = *p; + *p = NUL; + addfile(gap, cmd, flags); + *p = i; + ++cnt; + } + cmd = p; + while (*cmd != NUL && (*cmd == '\r' || *cmd == '\n')) + ++cmd; + } + + vim_free(buffer); + return cnt; +} + +/* + * Add a file to a file list. Accepted flags: + * EW_DIR add directories + * EW_FILE add files + * EW_EXEC add executable files + * EW_NOTFOUND add even when it doesn't exist + * EW_ADDSLASH add slash after directory name + */ +void addfile(gap, f, flags) +garray_T *gap; +char_u *f; /* filename */ +int flags; +{ + char_u *p; + int isdir; + + /* if the file/dir doesn't exist, may not add it */ + if (!(flags & EW_NOTFOUND) && mch_getperm(f) < 0) + return; + +#ifdef FNAME_ILLEGAL + /* if the file/dir contains illegal characters, don't add it */ + if (vim_strpbrk(f, (char_u *)FNAME_ILLEGAL) != NULL) + return; +#endif + + isdir = mch_isdir(f); + if ((isdir && !(flags & EW_DIR)) || (!isdir && !(flags & EW_FILE))) + return; + + /* If the file isn't executable, may not add it. Do accept directories. */ + if (!isdir && (flags & EW_EXEC) && !mch_can_exe(f)) + return; + + /* Make room for another item in the file list. */ + if (ga_grow(gap, 1) == FAIL) + return; + + p = alloc((unsigned)(STRLEN(f) + 1 + isdir)); + if (p == NULL) + return; + + STRCPY(p, f); +#ifdef BACKSLASH_IN_FILENAME + slash_adjust(p); +#endif + /* + * Append a slash or backslash after directory names if none is present. + */ +#ifndef DONT_ADD_PATHSEP_TO_DIR + if (isdir && (flags & EW_ADDSLASH)) + add_pathsep(p); +#endif + ((char_u **)gap->ga_data)[gap->ga_len++] = p; +} +#endif /* !NO_EXPANDPATH */ + + +#ifndef SEEK_SET +# define SEEK_SET 0 +#endif +#ifndef SEEK_END +# define SEEK_END 2 +#endif + +/* + * Get the stdout of an external command. + * Returns an allocated string, or NULL for error. + */ +char_u * get_cmd_output(cmd, infile, flags) +char_u *cmd; +char_u *infile; /* optional input file name */ +int flags; /* can be SHELL_SILENT */ +{ + char_u *tempname; + char_u *command; + char_u *buffer = NULL; + int len; + int i = 0; + FILE *fd; + + if (check_restricted() || check_secure()) + return NULL; + + /* get a name for the temp file */ + if ((tempname = vim_tempname('o')) == NULL) { + EMSG(_(e_notmp)); + return NULL; + } + + /* Add the redirection stuff */ + command = make_filter_cmd(cmd, infile, tempname); + if (command == NULL) + goto done; + + /* + * Call the shell to execute the command (errors are ignored). + * Don't check timestamps here. + */ + ++no_check_timestamps; + call_shell(command, SHELL_DOOUT | SHELL_EXPAND | flags); + --no_check_timestamps; + + vim_free(command); + + /* + * read the names from the file into memory + */ + fd = mch_fopen((char *)tempname, READBIN); + + if (fd == NULL) { + EMSG2(_(e_notopen), tempname); + goto done; + } + + fseek(fd, 0L, SEEK_END); + len = ftell(fd); /* get size of temp file */ + fseek(fd, 0L, SEEK_SET); + + buffer = alloc(len + 1); + if (buffer != NULL) + i = (int)fread((char *)buffer, (size_t)1, (size_t)len, fd); + fclose(fd); + mch_remove(tempname); + if (buffer == NULL) + goto done; + if (i != len) { + EMSG2(_(e_notread), tempname); + vim_free(buffer); + buffer = NULL; + } else { + /* Change NUL into SOH, otherwise the string is truncated. */ + for (i = 0; i < len; ++i) + if (buffer[i] == NUL) + buffer[i] = 1; + + buffer[len] = NUL; /* make sure the buffer is terminated */ + } + +done: + vim_free(tempname); + return buffer; +} + +/* + * Free the list of files returned by expand_wildcards() or other expansion + * functions. + */ +void FreeWild(count, files) +int count; +char_u **files; +{ + if (count <= 0 || files == NULL) + return; + while (count--) + vim_free(files[count]); + vim_free(files); +} + +/* + * Return TRUE when need to go to Insert mode because of 'insertmode'. + * Don't do this when still processing a command or a mapping. + * Don't do this when inside a ":normal" command. + */ +int goto_im() { + return p_im && stuff_empty() && typebuf_typed(); +} + |