diff options
Diffstat (limited to 'src/nvim/misc1.c')
| -rw-r--r-- | src/nvim/misc1.c | 3547 |
1 files changed, 3547 insertions, 0 deletions
diff --git a/src/nvim/misc1.c b/src/nvim/misc1.c new file mode 100644 index 0000000000..26b649331a --- /dev/null +++ b/src/nvim/misc1.c @@ -0,0 +1,3547 @@ +/* + * 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 <string.h> + +#include "vim.h" +#include "version_defs.h" +#include "misc1.h" +#include "charset.h" +#include "diff.h" +#include "edit.h" +#include "eval.h" +#include "ex_cmds.h" +#include "ex_docmd.h" +#include "ex_getln.h" +#include "fileio.h" +#include "fold.h" +#include "getchar.h" +#include "indent.h" +#include "indent_c.h" +#include "main.h" +#include "mark.h" +#include "mbyte.h" +#include "memline.h" +#include "memory.h" +#include "message.h" +#include "misc2.h" +#include "garray.h" +#include "move.h" +#include "option.h" +#include "os_unix.h" +#include "path.h" +#include "quickfix.h" +#include "regexp.h" +#include "screen.h" +#include "search.h" +#include "tag.h" +#include "term.h" +#include "ui.h" +#include "undo.h" +#include "window.h" +#include "os/os.h" +#include "os/shell.h" +static char_u *vim_version_dir(char_u *vimdir); +static char_u *remove_tail(char_u *p, char_u *pend, char_u *name); +static void init_users(void); + +/* All user names (for ~user completion as done by shell). */ +static garray_T ga_users; + +/* + * 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 ( + 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 */ + + 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) + memmove(endp + l, endp, + (size_t)((leader + lead_len) - endp)); + lead_len += l; + } + 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; + } + 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) { + memmove(p + lead_repl_len, p + i, + (size_t)(lead_len - i - (p - leader))); + lead_len += lead_repl_len - i; + } + } + 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; + 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++ = ' '; + } + 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() */ + free(p_extra); + next_line = NULL; + } + + retval = TRUE; /* success! */ +theend: + curbuf->b_p_pi = saved_pi; + free(saved_line); + free(next_line); + 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(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(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(linenr_T lnum) +{ + return plines_win(curwin, lnum, TRUE); +} + +int +plines_win ( + 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(linenr_T lnum) +{ + return plines_win_nofill(curwin, lnum, TRUE); +} + +int +plines_win_nofill ( + 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(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(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(win_T *wp, linenr_T first, linenr_T 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(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(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(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(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 = (char_u *) xmalloc((size_t)(linelen + newlen - oldlen)); + + /* Copy bytes before the cursor. */ + if (col > 0) + memmove(newp, oldp, (size_t)col); + + /* Copy bytes after the changed character(s). */ + p = newp + col; + memmove(p + newlen, oldp + col + oldlen, + (size_t)(linelen - col - oldlen)); + + /* Insert or overwrite the new character. */ + 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(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 = (char_u *) xmalloc((size_t)(oldlen + newlen + 1)); + if (col > 0) + memmove(newp, oldp, (size_t)col); + memmove(newp + col, s, (size_t)newlen); + 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(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(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 ( + long count, + int fixpos_arg, + int use_delcombine /* '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. + */ + 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; + memmove(newp, oldp, (size_t)col); + } + 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 ( + 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 ( + 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_T *pos) +{ + char_u *ptr = ml_get_pos(pos); + + if (has_mbyte) + return (*mb_ptr2char)(ptr); + return (int)*ptr; +} + +int gchar_cursor(void) +{ + 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(int c) +{ + *(ml_get_buf(curbuf, curwin->w_cursor.lnum, TRUE) + + curwin->w_cursor.col) = c; +} + +/* + * Skip to next part of an option argument: Skip space and comma. + */ +char_u *skip_to_option_part(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(void) +{ + + 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(void) +{ + curbuf->b_changed = TRUE; + ml_setflags(curbuf); + check_status(curbuf); + redraw_tabline = TRUE; + need_maketitle = TRUE; /* set window title later */ +} + +static void changedOneline(buf_T *buf, linenr_T lnum); +static void changed_lines_buf(buf_T *buf, linenr_T lnum, linenr_T lnume, + long xtra); +static void changed_common(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(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_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(linenr_T lnum, long count) +{ + changed_lines(lnum + 1, 0, lnum + 1, count); +} + +/* + * Like appended_lines(), but adjust marks first. + */ +void appended_lines_mark(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(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(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 ( + 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_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(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; + 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_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_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 ( + 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(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(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(void) +{ + 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 = xrealloc(buf, buflen); + maxlen = (buflen - 6 - len) / 3; + } + + /* 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) + 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; + } + 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 ( + 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(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(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, + _("%" PRId64 " more lines"), (int64_t)pn); + else + vim_snprintf((char *)msg_buf, MSG_BUF_LEN, + _("%" PRId64 " fewer lines"), (int64_t)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(void) +{ + if (emsg_silent == 0) { + flush_buffers(FALSE); + vim_beep(); + } +} + +/* + * give a warning for an error + */ +void vim_beep(void) +{ + 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 os_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(void) +{ + char_u *var; + + /* In case we are called a second time (when 'encoding' changes). */ + free(homedir); + homedir = NULL; + + var = (char_u *)os_getenv("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 (os_dirname(NameBuff, MAXPATHL) == OK + && os_chdir((char *)NameBuff) == 0) { + if (!os_chdir((char *)var) && os_dirname(IObuff, IOSIZE) == OK) + var = IObuff; + if (os_chdir((char *)NameBuff) != 0) + EMSG(_(e_prev_dir)); + } +#endif + homedir = vim_strsave(var); + } +} + +#if defined(EXITFREE) || defined(PROTO) +void free_homedir(void) +{ + free(homedir); +} + +void free_users(void) +{ + 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(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(char_u *src, int one) +{ + char_u *p; + + p = alloc(MAXPATHL); + expand_env_esc(src, p, MAXPATHL, FALSE, one, NULL); + return p; +} + +/* + * Expand environment variable with path name. + * "~/" is also expanded, using $HOME. For Unix "~user/" is expanded. + * Skips over "\ ", "\~" and "\$" (not for Win32 though). + * If anything fails no expansion is done and dst equals src. + */ +void +expand_env ( + char_u *src, /* input string e.g. "$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 ( + 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(MSWIN) || 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(MSWIN) || 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) + /* + * 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; + /* + * Use os_get_user_directory() to get the user directory. + * If this function 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). + */ + var = (char_u *)os_get_user_directory((char *)dst + 1); + mustfree = TRUE; + if (var == NULL) + { + 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 + /* cannot expand user's home directory, so don't try */ + var = NULL; + tail = (char_u *)""; /* for gcc */ +#endif /* UNIX */ + } + +#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) + 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) + 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) + && dst[-1] != ':' +#endif + && vim_ispathsep(*tail)) + ++tail; + dst += c; + src = tail; + copy_char = FALSE; + } + if (mustfree) + 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(char_u *name, int *mustfree) +{ + char_u *p; + char_u *pend; + int vimruntime; + + + p = (char_u *)os_getenv((char *)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 = (char_u *)os_getenv("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 = (char_u *)os_getenv("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 = path_tail(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 && !os_isdir(p)) { + 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) { + 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(char_u *vimdir) +{ + char_u *p; + + if (vimdir == NULL || *vimdir == NUL) + return NULL; + p = concat_fnames(vimdir, (char_u *)VIM_VERSION_NODOT, TRUE); + if (os_isdir(p)) + return p; + free(p); + p = concat_fnames(vimdir, (char_u *)RUNTIME_DIRNAME, TRUE); + if (os_isdir(p)) + return p; + 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(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(char_u *name, char_u *val) +{ + os_setenv((char *)name, (char *)val, 1); + /* + * 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"); + bindtextdomain(VIMPACKAGE, (char *)buf); + free(buf); + } +} + + +/* + * Function given to ExpandGeneric() to obtain an environment variable name. + */ +char_u *get_env_name(expand_T *xp, int idx) +{ +# define ENVNAMELEN 100 + // this static buffer is needed to avoid a memory leak in ExpandGeneric + static char_u name[ENVNAMELEN]; + char *envname = os_getenvname_at_index(idx); + if (envname) { + vim_strncpy(name, (char_u *)envname, ENVNAMELEN - 1); + free(envname); + return name; + } else { + return NULL; + } +} + +/* + * Find all user names for user completion. + * Done only once and then cached. + */ +static void init_users(void) +{ + static int lazy_init_done = FALSE; + + if (lazy_init_done) { + return; + } + + lazy_init_done = TRUE; + + os_get_usernames(&ga_users); +} + +/* + * Function given to ExpandGeneric() to obtain an user names. + */ +char_u *get_users(expand_T *xp, 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(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_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, path_tail(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 = (char_u *)os_getenv("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) + 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_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); + home_replace(buf, src, dst, len, TRUE); + return dst; +} + +void prepare_to_exit(void) +{ +#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(void) +{ + buf_T *buf; + + // Prevent repeated calls into this method. + if (really_exiting) { + exit(2); + } + + really_exiting = TRUE; + + prepare_to_exit(); + + 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); +} + +/* + * 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(void) +{ + if (++breakcheck_count >= BREAKCHECK_SKIP) { + breakcheck_count = 0; + ui_breakcheck(); + } +} + +/* + * Like line_breakcheck() but check 10 times less often. + */ +void fast_breakcheck(void) +{ + if (++breakcheck_count >= BREAKCHECK_SKIP * 10) { + breakcheck_count = 0; + ui_breakcheck(); + } +} + +#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 ( + 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); + + /* + * Call the shell to execute the command (errors are ignored). + * Don't check timestamps here. + */ + ++no_check_timestamps; + call_shell(command, kShellOptDoOut | kShellOptExpand | flags, NULL); + --no_check_timestamps; + + 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); + i = (int)fread((char *)buffer, (size_t)1, (size_t)len, fd); + fclose(fd); + os_remove((char *)tempname); + if (buffer == NULL) + goto done; + if (i != len) { + EMSG2(_(e_notread), tempname); + 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: + free(tempname); + return buffer; +} + +/* + * Free the list of files returned by expand_wildcards() or other expansion + * functions. + */ +void FreeWild(int count, char_u **files) +{ + if (count <= 0 || files == NULL) + return; + while (count--) + free(files[count]); + 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(void) +{ + return p_im && stuff_empty() && typebuf_typed(); +} + |