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authorThiago de Arruda <tpadilha84@gmail.com>2014-01-31 10:39:15 -0300
committerThiago de Arruda <tpadilha84@gmail.com>2014-01-31 10:39:15 -0300
commit72cf89bce8e4230dbc161dc5606f48ef9884ba70 (patch)
tree3ee06dbd8c57e291a8713289670ae1cb51397d44 /src/misc1.c
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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.c9097
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(&regmatch, 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(&regmatch,
+ (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(&regmatch, 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();
+}
+