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gerrit.omnirom.org / android_external_vim / 39a4eb0b2ca901b59800fad086550053556e59dc / . / src / search.c
blob: 616331ee1780e368f8a5cc87e510b190a95eb47d [file] [log] [blame]
/* vi:set ts=8 sts=4 sw=4 noet:
*
* 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.
*/
/*
* search.c: code for normal mode searching commands
*/
#include "vim.h"
#ifdef FEAT_EVAL
static void set_vv_searchforward(void);
static int first_submatch(regmmatch_T *rp);
#endif
#ifdef FEAT_FIND_ID
static char_u *get_line_and_copy(linenr_T lnum, char_u *buf);
static void show_pat_in_path(char_u *, int, int, int, FILE *, linenr_T *, long);
#endif
typedef struct searchstat
{
int cur; // current position of found words
int cnt; // total count of found words
int exact_match; // TRUE if matched exactly on specified position
int incomplete; // 0: search was fully completed
// 1: recomputing was timed out
// 2: max count exceeded
int last_maxcount; // the max count of the last search
} searchstat_T;
#ifdef FEAT_SEARCH_EXTRA
static void save_incsearch_state(void);
static void restore_incsearch_state(void);
#endif
static int check_prevcol(char_u *linep, int col, int ch, int *prevcol);
static int find_rawstring_end(char_u *linep, pos_T *startpos, pos_T *endpos);
static void find_mps_values(int *initc, int *findc, int *backwards, int switchit);
static int is_zero_width(char_u *pattern, size_t patternlen, int move, pos_T *cur, int direction);
static void cmdline_search_stat(int dirc, pos_T *pos, pos_T *cursor_pos, int show_top_bot_msg, char_u *msgbuf, size_t msgbuflen, int recompute, int maxcount, long timeout);
static void update_search_stat(int dirc, pos_T *pos, pos_T *cursor_pos, searchstat_T *stat, int recompute, int maxcount, long timeout);
static int fuzzy_match_compute_score(char_u *str, int strSz, int_u *matches, int numMatches);
static int fuzzy_match_recursive(char_u *fuzpat, char_u *str, int_u strIdx, int *outScore, char_u *strBegin, int strLen, int_u *srcMatches, int_u *matches, int maxMatches, int nextMatch, int *recursionCount);
#if defined(FEAT_EVAL) || defined(FEAT_PROTO)
static int fuzzy_match_item_compare(const void *s1, const void *s2);
static void fuzzy_match_in_list(list_T *l, char_u *str, int matchseq, char_u *key, callback_T *item_cb, int retmatchpos, list_T *fmatchlist, long max_matches);
static void do_fuzzymatch(typval_T *argvars, typval_T *rettv, int retmatchpos);
#endif
static int fuzzy_match_str_compare(const void *s1, const void *s2);
static void fuzzy_match_str_sort(fuzmatch_str_T *fm, int sz);
static int fuzzy_match_func_compare(const void *s1, const void *s2);
static void fuzzy_match_func_sort(fuzmatch_str_T *fm, int sz);
static int fuzzy_match_str_in_line(char_u **ptr, char_u *pat, int *len, pos_T *current_pos);
#define SEARCH_STAT_DEF_TIMEOUT 40L
#define SEARCH_STAT_DEF_MAX_COUNT 99
#define SEARCH_STAT_BUF_LEN 12
/*
* This file contains various searching-related routines. These fall into
* three groups:
* 1. string searches (for /, ?, n, and N)
* 2. character searches within a single line (for f, F, t, T, etc)
* 3. "other" kinds of searches like the '%' command, and 'word' searches.
*/
/*
* String searches
*
* The string search functions are divided into two levels:
* lowest: searchit(); uses an pos_T for starting position and found match.
* Highest: do_search(); uses curwin->w_cursor; calls searchit().
*
* The last search pattern is remembered for repeating the same search.
* This pattern is shared between the :g, :s, ? and / commands.
* This is in search_regcomp().
*
* The actual string matching is done using a heavily modified version of
* Henry Spencer's regular expression library. See regexp.c.
*/
/*
* Two search patterns are remembered: One for the :substitute command and
* one for other searches. last_idx points to the one that was used the last
* time.
*/
static spat_T spats[2] =
{
{NULL, 0, TRUE, FALSE, {'/', 0, 0, 0L}}, // last used search pat
{NULL, 0, TRUE, FALSE, {'/', 0, 0, 0L}} // last used substitute pat
};
static int last_idx = 0; // index in spats[] for RE_LAST
static char_u lastc[2] = {NUL, NUL}; // last character searched for
static int lastcdir = FORWARD; // last direction of character search
static int last_t_cmd = TRUE; // last search t_cmd
static char_u lastc_bytes[MB_MAXBYTES + 1];
static int lastc_bytelen = 1; // >1 for multi-byte char
// copy of spats[], for keeping the search patterns while executing autocmds
static spat_T saved_spats[ARRAY_LENGTH(spats)];
static char_u *saved_mr_pattern = NULL;
static size_t saved_mr_patternlen = 0;
# ifdef FEAT_SEARCH_EXTRA
static int saved_spats_last_idx = 0;
static int saved_spats_no_hlsearch = 0;
# endif
// allocated copy of pattern used by search_regcomp()
static char_u *mr_pattern = NULL;
static size_t mr_patternlen = 0;
#ifdef FEAT_FIND_ID
/*
* Type used by find_pattern_in_path() to remember which included files have
* been searched already.
*/
typedef struct SearchedFile
{
FILE *fp; // File pointer
char_u *name; // Full name of file
linenr_T lnum; // Line we were up to in file
int matched; // Found a match in this file
} SearchedFile;
#endif
/*
* translate search pattern for vim_regcomp()
*
* pat_save == RE_SEARCH: save pat in spats[RE_SEARCH].pat (normal search cmd)
* pat_save == RE_SUBST: save pat in spats[RE_SUBST].pat (:substitute command)
* pat_save == RE_BOTH: save pat in both patterns (:global command)
* pat_use == RE_SEARCH: use previous search pattern if "pat" is NULL
* pat_use == RE_SUBST: use previous substitute pattern if "pat" is NULL
* pat_use == RE_LAST: use last used pattern if "pat" is NULL
* options & SEARCH_HIS: put search string in history
* options & SEARCH_KEEP: keep previous search pattern
*
* returns FAIL if failed, OK otherwise.
*/
int
search_regcomp(
char_u *pat,
size_t patlen,
char_u **used_pat,
int pat_save,
int pat_use,
int options,
regmmatch_T *regmatch) // return: pattern and ignore-case flag
{
int magic;
rc_did_emsg = FALSE;
magic = magic_isset();
/*
* If no pattern given, use a previously defined pattern.
*/
if (pat == NULL || *pat == NUL)
{
int i;
if (pat_use == RE_LAST)
i = last_idx;
else
i = pat_use;
if (spats[i].pat == NULL) // pattern was never defined
{
if (pat_use == RE_SUBST)
emsg(_(e_no_previous_substitute_regular_expression));
else
emsg(_(e_no_previous_regular_expression));
rc_did_emsg = TRUE;
return FAIL;
}
pat = spats[i].pat;
patlen = spats[i].patlen;
magic = spats[i].magic;
no_smartcase = spats[i].no_scs;
}
else if (options & SEARCH_HIS) // put new pattern in history
add_to_history(HIST_SEARCH, pat, patlen, TRUE, NUL);
if (used_pat)
*used_pat = pat;
vim_free(mr_pattern);
#ifdef FEAT_RIGHTLEFT
if (curwin->w_p_rl && *curwin->w_p_rlc == 's')
mr_pattern = reverse_text(pat);
else
#endif
mr_pattern = vim_strnsave(pat, patlen);
if (mr_pattern == NULL)
mr_patternlen = 0;
else
mr_patternlen = patlen;
/*
* Save the currently used pattern in the appropriate place,
* unless the pattern should not be remembered.
*/
if (!(options & SEARCH_KEEP)
&& (cmdmod.cmod_flags & CMOD_KEEPPATTERNS) == 0)
{
// search or global command
if (pat_save == RE_SEARCH || pat_save == RE_BOTH)
save_re_pat(RE_SEARCH, pat, patlen, magic);
// substitute or global command
if (pat_save == RE_SUBST || pat_save == RE_BOTH)
save_re_pat(RE_SUBST, pat, patlen, magic);
}
regmatch->rmm_ic = ignorecase(pat);
regmatch->rmm_maxcol = 0;
regmatch->regprog = vim_regcomp(pat, magic ? RE_MAGIC : 0);
if (regmatch->regprog == NULL)
return FAIL;
return OK;
}
/*
* Get search pattern used by search_regcomp().
*/
char_u *
get_search_pat(void)
{
return mr_pattern;
}
void
save_re_pat(int idx, char_u *pat, size_t patlen, int magic)
{
if (spats[idx].pat == pat)
return;
vim_free(spats[idx].pat);
spats[idx].pat = vim_strnsave(pat, patlen);
if (spats[idx].pat == NULL)
spats[idx].patlen = 0;
else
spats[idx].patlen = patlen;
spats[idx].magic = magic;
spats[idx].no_scs = no_smartcase;
last_idx = idx;
#ifdef FEAT_SEARCH_EXTRA
// If 'hlsearch' set and search pat changed: need redraw.
if (p_hls)
redraw_all_later(UPD_SOME_VALID);
set_no_hlsearch(FALSE);
#endif
}
/*
* Save the search patterns, so they can be restored later.
* Used before/after executing autocommands and user functions.
*/
static int save_level = 0;
void
save_search_patterns(void)
{
int i;
if (save_level++ != 0)
return;
for (i = 0; i < (int)ARRAY_LENGTH(spats); ++i)
{
saved_spats[i] = spats[i];
if (spats[i].pat != NULL)
{
saved_spats[i].pat = vim_strnsave(spats[i].pat, spats[i].patlen);
if (saved_spats[i].pat == NULL)
saved_spats[i].patlen = 0;
else
saved_spats[i].patlen = spats[i].patlen;
}
}
if (mr_pattern == NULL)
saved_mr_pattern = NULL;
else
saved_mr_pattern = vim_strnsave(mr_pattern, mr_patternlen);
if (saved_mr_pattern == NULL)
saved_mr_patternlen = 0;
else
saved_mr_patternlen = mr_patternlen;
#ifdef FEAT_SEARCH_EXTRA
saved_spats_last_idx = last_idx;
saved_spats_no_hlsearch = no_hlsearch;
#endif
}
void
restore_search_patterns(void)
{
int i;
if (--save_level != 0)
return;
for (i = 0; i < (int)ARRAY_LENGTH(spats); ++i)
{
vim_free(spats[i].pat);
spats[i] = saved_spats[i];
}
#if defined(FEAT_EVAL)
set_vv_searchforward();
#endif
vim_free(mr_pattern);
mr_pattern = saved_mr_pattern;
mr_patternlen = saved_mr_patternlen;
#ifdef FEAT_SEARCH_EXTRA
last_idx = saved_spats_last_idx;
set_no_hlsearch(saved_spats_no_hlsearch);
#endif
}
#if defined(EXITFREE) || defined(PROTO)
void
free_search_patterns(void)
{
int i;
for (i = 0; i < (int)ARRAY_LENGTH(spats); ++i)
{
VIM_CLEAR(spats[i].pat);
spats[i].patlen = 0;
}
VIM_CLEAR(mr_pattern);
mr_patternlen = 0;
}
#endif
#ifdef FEAT_SEARCH_EXTRA
// copy of spats[RE_SEARCH], for keeping the search patterns while incremental
// searching
static spat_T saved_last_search_spat;
static int did_save_last_search_spat = 0;
static int saved_last_idx = 0;
static int saved_no_hlsearch = 0;
static int saved_search_match_endcol;
static int saved_search_match_lines;
/*
* Save and restore the search pattern for incremental highlight search
* feature.
*
* It's similar to but different from save_search_patterns() and
* restore_search_patterns(), because the search pattern must be restored when
* canceling incremental searching even if it's called inside user functions.
*/
void
save_last_search_pattern(void)
{
if (++did_save_last_search_spat != 1)
// nested call, nothing to do
return;
saved_last_search_spat = spats[RE_SEARCH];
if (spats[RE_SEARCH].pat != NULL)
{
saved_last_search_spat.pat = vim_strnsave(spats[RE_SEARCH].pat, spats[RE_SEARCH].patlen);
if (saved_last_search_spat.pat == NULL)
saved_last_search_spat.patlen = 0;
else
saved_last_search_spat.patlen = spats[RE_SEARCH].patlen;
}
saved_last_idx = last_idx;
saved_no_hlsearch = no_hlsearch;
}
void
restore_last_search_pattern(void)
{
if (--did_save_last_search_spat > 0)
// nested call, nothing to do
return;
if (did_save_last_search_spat != 0)
{
iemsg("restore_last_search_pattern() called more often than save_last_search_pattern()");
return;
}
vim_free(spats[RE_SEARCH].pat);
spats[RE_SEARCH] = saved_last_search_spat;
saved_last_search_spat.pat = NULL;
saved_last_search_spat.patlen = 0;
# if defined(FEAT_EVAL)
set_vv_searchforward();
# endif
last_idx = saved_last_idx;
set_no_hlsearch(saved_no_hlsearch);
}
/*
* Save and restore the incsearch highlighting variables.
* This is required so that calling searchcount() at does not invalidate the
* incsearch highlighting.
*/
static void
save_incsearch_state(void)
{
saved_search_match_endcol = search_match_endcol;
saved_search_match_lines = search_match_lines;
}
static void
restore_incsearch_state(void)
{
search_match_endcol = saved_search_match_endcol;
search_match_lines = saved_search_match_lines;
}
char_u *
last_search_pattern(void)
{
return spats[RE_SEARCH].pat;
}
size_t
last_search_pattern_len(void)
{
return spats[RE_SEARCH].patlen;
}
#endif
/*
* Return TRUE when case should be ignored for search pattern "pat".
* Uses the 'ignorecase' and 'smartcase' options.
*/
int
ignorecase(char_u *pat)
{
return ignorecase_opt(pat, p_ic, p_scs);
}
/*
* As ignorecase() put pass the "ic" and "scs" flags.
*/
int
ignorecase_opt(char_u *pat, int ic_in, int scs)
{
int ic = ic_in;
if (ic && !no_smartcase && scs
&& !(ctrl_x_mode_not_default() && curbuf->b_p_inf))
ic = !pat_has_uppercase(pat);
no_smartcase = FALSE;
return ic;
}
/*
* Return TRUE if pattern "pat" has an uppercase character.
*/
int
pat_has_uppercase(char_u *pat)
{
char_u *p = pat;
magic_T magic_val = MAGIC_ON;
// get the magicness of the pattern
(void)skip_regexp_ex(pat, NUL, magic_isset(), NULL, NULL, &magic_val);
while (*p != NUL)
{
int l;
if (has_mbyte && (l = (*mb_ptr2len)(p)) > 1)
{
if (enc_utf8 && utf_isupper(utf_ptr2char(p)))
return TRUE;
p += l;
}
else if (*p == '\\' && magic_val <= MAGIC_ON)
{
if (p[1] == '_' && p[2] != NUL) // skip "\_X"
p += 3;
else if (p[1] == '%' && p[2] != NUL) // skip "\%X"
p += 3;
else if (p[1] != NUL) // skip "\X"
p += 2;
else
p += 1;
}
else if ((*p == '%' || *p == '_') && magic_val == MAGIC_ALL)
{
if (p[1] != NUL) // skip "_X" and %X
p += 2;
else
p++;
}
else if (MB_ISUPPER(*p))
return TRUE;
else
++p;
}
return FALSE;
}
#if defined(FEAT_EVAL) || defined(PROTO)
char_u *
last_csearch(void)
{
return lastc_bytes;
}
int
last_csearch_forward(void)
{
return lastcdir == FORWARD;
}
int
last_csearch_until(void)
{
return last_t_cmd == TRUE;
}
void
set_last_csearch(int c, char_u *s, int len)
{
*lastc = c;
lastc_bytelen = len;
if (len)
memcpy(lastc_bytes, s, len);
else
CLEAR_FIELD(lastc_bytes);
}
#endif
void
set_csearch_direction(int cdir)
{
lastcdir = cdir;
}
void
set_csearch_until(int t_cmd)
{
last_t_cmd = t_cmd;
}
char_u *
last_search_pat(void)
{
return spats[last_idx].pat;
}
/*
* Reset search direction to forward. For "gd" and "gD" commands.
*/
void
reset_search_dir(void)
{
spats[0].off.dir = '/';
#if defined(FEAT_EVAL)
set_vv_searchforward();
#endif
}
#if defined(FEAT_EVAL) || defined(FEAT_VIMINFO)
/*
* Set the last search pattern. For ":let @/ =" and viminfo.
* Also set the saved search pattern, so that this works in an autocommand.
*/
void
set_last_search_pat(
char_u *s,
int idx,
int magic,
int setlast)
{
vim_free(spats[idx].pat);
// An empty string means that nothing should be matched.
if (*s == NUL)
spats[idx].pat = NULL;
else
{
spats[idx].patlen = STRLEN(s);
spats[idx].pat = vim_strnsave(s, spats[idx].patlen);
}
if (spats[idx].pat == NULL)
spats[idx].patlen = 0;
spats[idx].magic = magic;
spats[idx].no_scs = FALSE;
spats[idx].off.dir = '/';
#if defined(FEAT_EVAL)
set_vv_searchforward();
#endif
spats[idx].off.line = FALSE;
spats[idx].off.end = FALSE;
spats[idx].off.off = 0;
if (setlast)
last_idx = idx;
if (save_level)
{
vim_free(saved_spats[idx].pat);
saved_spats[idx] = spats[0];
if (spats[idx].pat == NULL)
saved_spats[idx].pat = NULL;
else
saved_spats[idx].pat = vim_strnsave(spats[idx].pat, spats[idx].patlen);
if (saved_spats[idx].pat == NULL)
saved_spats[idx].patlen = 0;
else
saved_spats[idx].patlen = spats[idx].patlen;
# ifdef FEAT_SEARCH_EXTRA
saved_spats_last_idx = last_idx;
# endif
}
# ifdef FEAT_SEARCH_EXTRA
// If 'hlsearch' set and search pat changed: need redraw.
if (p_hls && idx == last_idx && !no_hlsearch)
redraw_all_later(UPD_SOME_VALID);
# endif
}
#endif
#ifdef FEAT_SEARCH_EXTRA
/*
* Get a regexp program for the last used search pattern.
* This is used for highlighting all matches in a window.
* Values returned in regmatch->regprog and regmatch->rmm_ic.
*/
void
last_pat_prog(regmmatch_T *regmatch)
{
if (spats[last_idx].pat == NULL)
{
regmatch->regprog = NULL;
return;
}
++emsg_off; // So it doesn't beep if bad expr
(void)search_regcomp((char_u *)"", 0, NULL, 0, last_idx, SEARCH_KEEP, regmatch);
--emsg_off;
}
#endif
/*
* Lowest level search function.
* Search for 'count'th occurrence of pattern "pat" in direction "dir".
* Start at position "pos" and return the found position in "pos".
*
* if (options & SEARCH_MSG) == 0 don't give any messages
* if (options & SEARCH_MSG) == SEARCH_NFMSG don't give 'notfound' messages
* if (options & SEARCH_MSG) == SEARCH_MSG give all messages
* if (options & SEARCH_HIS) put search pattern in history
* if (options & SEARCH_END) return position at end of match
* if (options & SEARCH_START) accept match at pos itself
* if (options & SEARCH_KEEP) keep previous search pattern
* if (options & SEARCH_FOLD) match only once in a closed fold
* if (options & SEARCH_PEEK) check for typed char, cancel search
* if (options & SEARCH_COL) start at pos->col instead of zero
*
* Return FAIL (zero) for failure, non-zero for success.
* When FEAT_EVAL is defined, returns the index of the first matching
* subpattern plus one; one if there was none.
*/
int
searchit(
win_T *win, // window to search in; can be NULL for a
// buffer without a window!
buf_T *buf,
pos_T *pos,
pos_T *end_pos, // set to end of the match, unless NULL
int dir,
char_u *pat,
size_t patlen,
long count,
int options,
int pat_use, // which pattern to use when "pat" is empty
searchit_arg_T *extra_arg) // optional extra arguments, can be NULL
{
int found;
linenr_T lnum; // no init to shut up Apollo cc
colnr_T col;
regmmatch_T regmatch;
char_u *ptr;
colnr_T matchcol;
lpos_T endpos;
lpos_T matchpos;
int loop;
pos_T start_pos;
int at_first_line;
int extra_col;
int start_char_len;
int match_ok;
long nmatched;
int submatch = 0;
int first_match = TRUE;
int called_emsg_before = called_emsg;
#ifdef FEAT_SEARCH_EXTRA
int break_loop = FALSE;
#endif
linenr_T stop_lnum = 0; // stop after this line number when != 0
int unused_timeout_flag = FALSE;
int *timed_out = &unused_timeout_flag; // set when timed out.
int search_from_match_end; // vi-compatible search?
if (search_regcomp(pat, patlen, NULL, RE_SEARCH, pat_use,
(options & (SEARCH_HIS + SEARCH_KEEP)), &regmatch) == FAIL)
{
if ((options & SEARCH_MSG) && !rc_did_emsg)
semsg(_(e_invalid_search_string_str), mr_pattern);
return FAIL;
}
search_from_match_end = vim_strchr(p_cpo, CPO_SEARCH) != NULL;
if (extra_arg != NULL)
{
stop_lnum = extra_arg->sa_stop_lnum;
#ifdef FEAT_RELTIME
if (extra_arg->sa_tm > 0)
init_regexp_timeout(extra_arg->sa_tm);
// Also set the pointer when sa_tm is zero, the caller may have set the
// timeout.
timed_out = &extra_arg->sa_timed_out;
#endif
}
/*
* find the string
*/
do // loop for count
{
// When not accepting a match at the start position set "extra_col" to
// a non-zero value. Don't do that when starting at MAXCOL, since
// MAXCOL + 1 is zero.
if (pos->col == MAXCOL)
start_char_len = 0;
// Watch out for the "col" being MAXCOL - 2, used in a closed fold.
else if (has_mbyte
&& pos->lnum >= 1 && pos->lnum <= buf->b_ml.ml_line_count
&& pos->col < MAXCOL - 2)
{
ptr = ml_get_buf(buf, pos->lnum, FALSE);
if (ml_get_buf_len(buf, pos->lnum) <= pos->col)
start_char_len = 1;
else
start_char_len = (*mb_ptr2len)(ptr + pos->col);
}
else
start_char_len = 1;
if (dir == FORWARD)
{
if (options & SEARCH_START)
extra_col = 0;
else
extra_col = start_char_len;
}
else
{
if (options & SEARCH_START)
extra_col = start_char_len;
else
extra_col = 0;
}
start_pos = *pos; // remember start pos for detecting no match
found = 0; // default: not found
at_first_line = TRUE; // default: start in first line
if (pos->lnum == 0) // correct lnum for when starting in line 0
{
pos->lnum = 1;
pos->col = 0;
at_first_line = FALSE; // not in first line now
}
/*
* Start searching in current line, unless searching backwards and
* we're in column 0.
* If we are searching backwards, in column 0, and not including the
* current position, gain some efficiency by skipping back a line.
* Otherwise begin the search in the current line.
*/
if (dir == BACKWARD && start_pos.col == 0
&& (options & SEARCH_START) == 0)
{
lnum = pos->lnum - 1;
at_first_line = FALSE;
}
else
lnum = pos->lnum;
for (loop = 0; loop <= 1; ++loop) // loop twice if 'wrapscan' set
{
for ( ; lnum > 0 && lnum <= buf->b_ml.ml_line_count;
lnum += dir, at_first_line = FALSE)
{
// Stop after checking "stop_lnum", if it's set.
if (stop_lnum != 0 && (dir == FORWARD
? lnum > stop_lnum : lnum < stop_lnum))
break;
// Stop after passing the time limit.
if (*timed_out)
break;
/*
* Look for a match somewhere in line "lnum".
*/
col = at_first_line && (options & SEARCH_COL) ? pos->col
: (colnr_T)0;
nmatched = vim_regexec_multi(&regmatch, win, buf,
lnum, col, timed_out);
// vim_regexec_multi() may clear "regprog"
if (regmatch.regprog == NULL)
break;
// Abort searching on an error (e.g., out of stack).
if (called_emsg > called_emsg_before || *timed_out)
break;
if (nmatched > 0)
{
// match may actually be in another line when using \zs
matchpos = regmatch.startpos[0];
endpos = regmatch.endpos[0];
#ifdef FEAT_EVAL
submatch = first_submatch(&regmatch);
#endif
// "lnum" may be past end of buffer for "\n\zs".
if (lnum + matchpos.lnum > buf->b_ml.ml_line_count)
ptr = (char_u *)"";
else
ptr = ml_get_buf(buf, lnum + matchpos.lnum, FALSE);
/*
* Forward search in the first line: match should be after
* the start position. If not, continue at the end of the
* match (this is vi compatible) or on the next char.
*/
if (dir == FORWARD && at_first_line)
{
match_ok = TRUE;
/*
* When the match starts in a next line it's certainly
* past the start position.
* When match lands on a NUL the cursor will be put
* one back afterwards, compare with that position,
* otherwise "/$" will get stuck on end of line.
*/
while (matchpos.lnum == 0
&& ((options & SEARCH_END) && first_match
? (nmatched == 1
&& (int)endpos.col - 1
< (int)start_pos.col + extra_col)
: ((int)matchpos.col
- (ptr[matchpos.col] == NUL)
< (int)start_pos.col + extra_col)))
{
/*
* If vi-compatible searching, continue at the end
* of the match, otherwise continue one position
* forward.
*/
if (search_from_match_end)
{
if (nmatched > 1)
{
// end is in next line, thus no match in
// this line
match_ok = FALSE;
break;
}
matchcol = endpos.col;
// for empty match: advance one char
if (matchcol == matchpos.col
&& ptr[matchcol] != NUL)
{
if (has_mbyte)
matchcol +=
(*mb_ptr2len)(ptr + matchcol);
else
++matchcol;
}
}
else
{
// Advance "matchcol" to the next character.
// This uses rmm_matchcol, the actual start of
// the match, ignoring "\zs".
matchcol = regmatch.rmm_matchcol;
if (ptr[matchcol] != NUL)
{
if (has_mbyte)
matchcol += (*mb_ptr2len)(ptr
+ matchcol);
else
++matchcol;
}
}
if (matchcol == 0 && (options & SEARCH_START))
break;
if (ptr[matchcol] == NUL
|| (nmatched = vim_regexec_multi(&regmatch,
win, buf, lnum + matchpos.lnum,
matchcol, timed_out)) == 0)
{
match_ok = FALSE;
break;
}
// vim_regexec_multi() may clear "regprog"
if (regmatch.regprog == NULL)
break;
matchpos = regmatch.startpos[0];
endpos = regmatch.endpos[0];
# ifdef FEAT_EVAL
submatch = first_submatch(&regmatch);
# endif
// Need to get the line pointer again, a
// multi-line search may have made it invalid.
ptr = ml_get_buf(buf, lnum + matchpos.lnum, FALSE);
}
if (!match_ok)
continue;
}
if (dir == BACKWARD)
{
/*
* Now, if there are multiple matches on this line,
* we have to get the last one. Or the last one before
* the cursor, if we're on that line.
* When putting the new cursor at the end, compare
* relative to the end of the match.
*/
match_ok = FALSE;
for (;;)
{
// Remember a position that is before the start
// position, we use it if it's the last match in
// the line. Always accept a position after
// wrapping around.
if (loop
|| ((options & SEARCH_END)
? (lnum + regmatch.endpos[0].lnum
< start_pos.lnum
|| (lnum + regmatch.endpos[0].lnum
== start_pos.lnum
&& (int)regmatch.endpos[0].col - 1
< (int)start_pos.col
+ extra_col))
: (lnum + regmatch.startpos[0].lnum
< start_pos.lnum
|| (lnum + regmatch.startpos[0].lnum
== start_pos.lnum
&& (int)regmatch.startpos[0].col
< (int)start_pos.col
+ extra_col))))
{
match_ok = TRUE;
matchpos = regmatch.startpos[0];
endpos = regmatch.endpos[0];
# ifdef FEAT_EVAL
submatch = first_submatch(&regmatch);
# endif
}
else
break;
/*
* We found a valid match, now check if there is
* another one after it.
* If vi-compatible searching, continue at the end
* of the match, otherwise continue one position
* forward.
*/
if (search_from_match_end)
{
if (nmatched > 1)
break;
matchcol = endpos.col;
// for empty match: advance one char
if (matchcol == matchpos.col
&& ptr[matchcol] != NUL)
{
if (has_mbyte)
matchcol +=
(*mb_ptr2len)(ptr + matchcol);
else
++matchcol;
}
}
else
{
// Stop when the match is in a next line.
if (matchpos.lnum > 0)
break;
matchcol = matchpos.col;
if (ptr[matchcol] != NUL)
{
if (has_mbyte)
matchcol +=
(*mb_ptr2len)(ptr + matchcol);
else
++matchcol;
}
}
if (ptr[matchcol] == NUL
|| (nmatched = vim_regexec_multi(&regmatch,
win, buf, lnum + matchpos.lnum,
matchcol, timed_out)) == 0)
{
// If the search timed out, we did find a match
// but it might be the wrong one, so that's not
// OK.
if (*timed_out)
match_ok = FALSE;
break;
}
// vim_regexec_multi() may clear "regprog"
if (regmatch.regprog == NULL)
break;
// Need to get the line pointer again, a
// multi-line search may have made it invalid.
ptr = ml_get_buf(buf, lnum + matchpos.lnum, FALSE);
}
/*
* If there is only a match after the cursor, skip
* this match.
*/
if (!match_ok)
continue;
}
// With the SEARCH_END option move to the last character
// of the match. Don't do it for an empty match, end
// should be same as start then.
if ((options & SEARCH_END) && !(options & SEARCH_NOOF)
&& !(matchpos.lnum == endpos.lnum
&& matchpos.col == endpos.col))
{
// For a match in the first column, set the position
// on the NUL in the previous line.
pos->lnum = lnum + endpos.lnum;
pos->col = endpos.col;
if (endpos.col == 0)
{
if (pos->lnum > 1) // just in case
{
--pos->lnum;
pos->col = ml_get_buf_len(buf, pos->lnum);
}
}
else
{
--pos->col;
if (has_mbyte
&& pos->lnum <= buf->b_ml.ml_line_count)
{
ptr = ml_get_buf(buf, pos->lnum, FALSE);
pos->col -= (*mb_head_off)(ptr, ptr + pos->col);
}
}
if (end_pos != NULL)
{
end_pos->lnum = lnum + matchpos.lnum;
end_pos->col = matchpos.col;
}
}
else
{
pos->lnum = lnum + matchpos.lnum;
pos->col = matchpos.col;
if (end_pos != NULL)
{
end_pos->lnum = lnum + endpos.lnum;
end_pos->col = endpos.col;
}
}
pos->coladd = 0;
if (end_pos != NULL)
end_pos->coladd = 0;
found = 1;
first_match = FALSE;
// Set variables used for 'incsearch' highlighting.
search_match_lines = endpos.lnum - matchpos.lnum;
search_match_endcol = endpos.col;
break;
}
line_breakcheck(); // stop if ctrl-C typed
if (got_int)
break;
#ifdef FEAT_SEARCH_EXTRA
// Cancel searching if a character was typed. Used for
// 'incsearch'. Don't check too often, that would slowdown
// searching too much.
if ((options & SEARCH_PEEK)
&& ((lnum - pos->lnum) & 0x3f) == 0
&& char_avail())
{
break_loop = TRUE;
break;
}
#endif
if (loop && lnum == start_pos.lnum)
break; // if second loop, stop where started
}
at_first_line = FALSE;
// vim_regexec_multi() may clear "regprog"
if (regmatch.regprog == NULL)
break;
/*
* Stop the search if wrapscan isn't set, "stop_lnum" is
* specified, after an interrupt, after a match and after looping
* twice.
*/
if (!p_ws || stop_lnum != 0 || got_int
|| called_emsg > called_emsg_before || *timed_out
#ifdef FEAT_SEARCH_EXTRA
|| break_loop
#endif
|| found || loop)
break;
/*
* If 'wrapscan' is set we continue at the other end of the file.
* If 'shortmess' does not contain 's', we give a message, but
* only, if we won't show the search stat later anyhow,
* (so SEARCH_COUNT must be absent).
* This message is also remembered in keep_msg for when the screen
* is redrawn. The keep_msg is cleared whenever another message is
* written.
*/
if (dir == BACKWARD) // start second loop at the other end
lnum = buf->b_ml.ml_line_count;
else
lnum = 1;
if (!shortmess(SHM_SEARCH)
&& shortmess(SHM_SEARCHCOUNT)
&& (options & SEARCH_MSG))
give_warning((char_u *)_(dir == BACKWARD
? top_bot_msg : bot_top_msg), TRUE);
if (extra_arg != NULL)
extra_arg->sa_wrapped = TRUE;
}
if (got_int || called_emsg > called_emsg_before || *timed_out
#ifdef FEAT_SEARCH_EXTRA
|| break_loop
#endif
)
break;
}
while (--count > 0 && found); // stop after count matches or no match
#ifdef FEAT_RELTIME
if (extra_arg != NULL && extra_arg->sa_tm > 0)
disable_regexp_timeout();
#endif
vim_regfree(regmatch.regprog);
if (!found) // did not find it
{
if (got_int)
emsg(_(e_interrupted));
else if ((options & SEARCH_MSG) == SEARCH_MSG)
{
if (p_ws)
semsg(_(e_pattern_not_found_str), mr_pattern);
else if (lnum == 0)
semsg(_(e_search_hit_top_without_match_for_str), mr_pattern);
else
semsg(_(e_search_hit_bottom_without_match_for_str), mr_pattern);
}
return FAIL;
}
// A pattern like "\n\zs" may go past the last line.
if (pos->lnum > buf->b_ml.ml_line_count)
{
pos->lnum = buf->b_ml.ml_line_count;
pos->col = ml_get_buf_len(buf, pos->lnum);
if (pos->col > 0)
--pos->col;
}
return submatch + 1;
}
#if defined(FEAT_EVAL) || defined(FEAT_PROTO)
void
set_search_direction(int cdir)
{
spats[0].off.dir = cdir;
}
static void
set_vv_searchforward(void)
{
set_vim_var_nr(VV_SEARCHFORWARD, (long)(spats[0].off.dir == '/'));
}
/*
* Return the number of the first subpat that matched.
* Return zero if none of them matched.
*/
static int
first_submatch(regmmatch_T *rp)
{
int submatch;
for (submatch = 1; ; ++submatch)
{
if (rp->startpos[submatch].lnum >= 0)
break;
if (submatch == 9)
{
submatch = 0;
break;
}
}
return submatch;
}
#endif
/*
* Highest level string search function.
* Search for the 'count'th occurrence of pattern 'pat' in direction 'dirc'
* If 'dirc' is 0: use previous dir.
* If 'pat' is NULL or empty : use previous string.
* If 'options & SEARCH_REV' : go in reverse of previous dir.
* If 'options & SEARCH_ECHO': echo the search command and handle options
* If 'options & SEARCH_MSG' : may give error message
* If 'options & SEARCH_OPT' : interpret optional flags
* If 'options & SEARCH_HIS' : put search pattern in history
* If 'options & SEARCH_NOOF': don't add offset to position
* If 'options & SEARCH_MARK': set previous context mark
* If 'options & SEARCH_KEEP': keep previous search pattern
* If 'options & SEARCH_START': accept match at curpos itself
* If 'options & SEARCH_PEEK': check for typed char, cancel search
*
* Careful: If spats[0].off.line == TRUE and spats[0].off.off == 0 this
* makes the movement linewise without moving the match position.
*
* Return 0 for failure, 1 for found, 2 for found and line offset added.
*/
int
do_search(
oparg_T *oap, // can be NULL
int dirc, // '/' or '?'
int search_delim, // the delimiter for the search, e.g. '%' in
// s%regex%replacement%
char_u *pat,
size_t patlen,
long count,
int options,
searchit_arg_T *sia) // optional arguments or NULL
{
pos_T pos; // position of the last match
char_u *searchstr;
size_t searchstrlen;
soffset_T old_off;
int retval; // Return value
char_u *p;
long c;
char_u *dircp;
char_u *strcopy = NULL;
char_u *ps;
int show_search_stats;
char_u *msgbuf = NULL;
size_t msgbuflen = 0;
int has_offset = FALSE;
searchcmdlen = 0;
/*
* A line offset is not remembered, this is vi compatible.
*/
if (spats[0].off.line && vim_strchr(p_cpo, CPO_LINEOFF) != NULL)
{
spats[0].off.line = FALSE;
spats[0].off.off = 0;
}
/*
* Save the values for when (options & SEARCH_KEEP) is used.
* (there is no "if ()" around this because gcc wants them initialized)
*/
old_off = spats[0].off;
pos = curwin->w_cursor; // start searching at the cursor position
/*
* Find out the direction of the search.
*/
if (dirc == 0)
dirc = spats[0].off.dir;
else
{
spats[0].off.dir = dirc;
#if defined(FEAT_EVAL)
set_vv_searchforward();
#endif
}
if (options & SEARCH_REV)
{
#ifdef MSWIN
// There is a bug in the Visual C++ 2.2 compiler which means that
// dirc always ends up being '/'
dirc = (dirc == '/') ? '?' : '/';
#else
if (dirc == '/')
dirc = '?';
else
dirc = '/';
#endif
}
#ifdef FEAT_FOLDING
// If the cursor is in a closed fold, don't find another match in the same
// fold.
if (dirc == '/')
{
if (hasFolding(pos.lnum, NULL, &pos.lnum))
pos.col = MAXCOL - 2; // avoid overflow when adding 1
}
else
{
if (hasFolding(pos.lnum, &pos.lnum, NULL))
pos.col = 0;
}
#endif
#ifdef FEAT_SEARCH_EXTRA
/*
* Turn 'hlsearch' highlighting back on.
*/
if (no_hlsearch && !(options & SEARCH_KEEP))
{
redraw_all_later(UPD_SOME_VALID);
set_no_hlsearch(FALSE);
}
#endif
/*
* Repeat the search when pattern followed by ';', e.g. "/foo/;?bar".
*/
for (;;)
{
int show_top_bot_msg = FALSE;
searchstr = pat;
searchstrlen = patlen;
dircp = NULL;
// use previous pattern
if (pat == NULL || *pat == NUL || *pat == search_delim)
{
if (spats[RE_SEARCH].pat == NULL) // no previous pattern
{
if (spats[RE_SUBST].pat == NULL)
{
emsg(_(e_no_previous_regular_expression));
retval = 0;
goto end_do_search;
}
searchstr = spats[RE_SUBST].pat;
searchstrlen = spats[RE_SUBST].patlen;
}
else
{
// make search_regcomp() use spats[RE_SEARCH].pat
searchstr = (char_u *)"";
searchstrlen = 0;
}
}
if (pat != NULL && *pat != NUL) // look for (new) offset
{
/*
* Find end of regular expression.
* If there is a matching '/' or '?', toss it.
*/
ps = strcopy;
p = skip_regexp_ex(pat, search_delim, magic_isset(),
&strcopy, NULL, NULL);
if (strcopy != ps)
{
size_t len = STRLEN(strcopy);
// made a copy of "pat" to change "\?" to "?"
searchcmdlen += (int)(patlen - len);
pat = strcopy;
patlen = len;
searchstr = strcopy;
searchstrlen = len;
}
if (*p == search_delim)
{
searchstrlen = p - pat;
dircp = p; // remember where we put the NUL
*p++ = NUL;
}
spats[0].off.line = FALSE;
spats[0].off.end = FALSE;
spats[0].off.off = 0;
/*
* Check for a line offset or a character offset.
* For get_address (echo off) we don't check for a character
* offset, because it is meaningless and the 's' could be a
* substitute command.
*/
if (*p == '+' || *p == '-' || VIM_ISDIGIT(*p))
spats[0].off.line = TRUE;
else if ((options & SEARCH_OPT)
&& (*p == 'e' || *p == 's' || *p == 'b'))
{
if (*p == 'e') // end
spats[0].off.end = SEARCH_END;
++p;
}
if (VIM_ISDIGIT(*p) || *p == '+' || *p == '-') // got an offset
{
// 'nr' or '+nr' or '-nr'
if (VIM_ISDIGIT(*p) || VIM_ISDIGIT(*(p + 1)))
spats[0].off.off = atol((char *)p);
else if (*p == '-') // single '-'
spats[0].off.off = -1;
else // single '+'
spats[0].off.off = 1;
++p;
while (VIM_ISDIGIT(*p)) // skip number
++p;
}
// compute length of search command for get_address()
searchcmdlen += (int)(p - pat);
patlen -= p - pat;
pat = p; // put pat after search command
}
show_search_stats = FALSE;
if ((options & SEARCH_ECHO) && messaging()
&& !msg_silent
&& (!cmd_silent || !shortmess(SHM_SEARCHCOUNT)))
{
char_u off_buf[40];
size_t off_len = 0;
size_t plen;
size_t msgbufsize;
// Compute msg_row early.
msg_start();
// Get the offset, so we know how long it is.
if (!cmd_silent &&
(spats[0].off.line || spats[0].off.end || spats[0].off.off))
{
off_buf[off_len++] = dirc;
if (spats[0].off.end)
off_buf[off_len++] = 'e';
else if (!spats[0].off.line)
off_buf[off_len++] = 's';
if (spats[0].off.off > 0 || spats[0].off.line)
off_buf[off_len++] = '+';
off_buf[off_len] = NUL;
if (spats[0].off.off != 0 || spats[0].off.line)
off_len += vim_snprintf((char *)off_buf + off_len, sizeof(off_buf) - off_len, "%ld", spats[0].off.off);
}
if (*searchstr == NUL)
{
p = spats[0].pat;
plen = spats[0].patlen;
}
else
{
p = searchstr;
plen = searchstrlen;
}
if (!shortmess(SHM_SEARCHCOUNT) || cmd_silent)
{
// Reserve enough space for the search pattern + offset +
// search stat. Use all the space available, so that the
// search state is right aligned. If there is not enough space
// msg_strtrunc() will shorten in the middle.
if (msg_scrolled != 0 && !cmd_silent)
// Use all the columns.
msgbufsize = (int)(Rows - msg_row) * Columns - 1;
else
// Use up to 'showcmd' column.
msgbufsize = (int)(Rows - msg_row - 1) * Columns + sc_col - 1;
if (msgbufsize < plen + off_len + SEARCH_STAT_BUF_LEN + 3)
msgbufsize = plen + off_len + SEARCH_STAT_BUF_LEN + 3;
}
else
// Reserve enough space for the search pattern + offset.
msgbufsize = plen + off_len + 3;
vim_free(msgbuf);
msgbuf = alloc(msgbufsize);
if (msgbuf == NULL)
{
msgbuflen = 0;
}
else
{
vim_memset(msgbuf, ' ', msgbufsize);
msgbuflen = msgbufsize - 1;
msgbuf[msgbuflen] = NUL;
// do not fill the msgbuf buffer, if cmd_silent is set, leave it
// empty for the search_stat feature.
if (!cmd_silent)
{
char_u *trunc;
msgbuf[0] = dirc;
if (enc_utf8 && utf_iscomposing(utf_ptr2char(p)))
{
// Use a space to draw the composing char on.
msgbuf[1] = ' ';
mch_memmove(msgbuf + 2, p, plen);
}
else
mch_memmove(msgbuf + 1, p, plen);
if (off_len > 0)
mch_memmove(msgbuf + plen + 1, off_buf, off_len);
trunc = msg_strtrunc(msgbuf, TRUE);
if (trunc != NULL)
{
vim_free(msgbuf);
msgbuf = trunc;
msgbuflen = STRLEN(msgbuf);
}
#ifdef FEAT_RIGHTLEFT
// The search pattern could be shown on the right in
// rightleft mode, but the 'ruler' and 'showcmd' area use
// it too, thus it would be blanked out again very soon.
// Show it on the left, but do reverse the text.
if (curwin->w_p_rl && *curwin->w_p_rlc == 's')
{
char_u *r;
size_t pat_len;
r = reverse_text(msgbuf);
if (r != NULL)
{
vim_free(msgbuf);
msgbuf = r;
msgbuflen = STRLEN(msgbuf);
// move reversed text to beginning of buffer
while (*r != NUL && *r == ' ')
r++;
pat_len = msgbuf + msgbuflen - r;
mch_memmove(msgbuf, r, pat_len);
// overwrite old text
if ((size_t)(r - msgbuf) >= pat_len)
vim_memset(r, ' ', pat_len);
else
vim_memset(msgbuf + pat_len, ' ', r - msgbuf);
}
}
#endif
msg_outtrans(msgbuf);
msg_clr_eos();
msg_check();
gotocmdline(FALSE);
out_flush();
msg_nowait = TRUE; // don't wait for this message
}
if (!shortmess(SHM_SEARCHCOUNT))
show_search_stats = TRUE;
} // msgbuf != NULL
}
/*
* If there is a character offset, subtract it from the current
* position, so we don't get stuck at "?pat?e+2" or "/pat/s-2".
* Skip this if pos.col is near MAXCOL (closed fold).
* This is not done for a line offset, because then we would not be vi
* compatible.
*/
if (!spats[0].off.line && spats[0].off.off && pos.col < MAXCOL - 2)
{
if (spats[0].off.off > 0)
{
for (c = spats[0].off.off; c; --c)
if (decl(&pos) == -1)
break;
if (c) // at start of buffer
{
pos.lnum = 0; // allow lnum == 0 here
pos.col = MAXCOL;
}
}
else
{
for (c = spats[0].off.off; c; ++c)
if (incl(&pos) == -1)
break;
if (c) // at end of buffer
{
pos.lnum = curbuf->b_ml.ml_line_count + 1;
pos.col = 0;
}
}
}
/*
* The actual search.
*/
c = searchit(curwin, curbuf, &pos, NULL,
dirc == '/' ? FORWARD : BACKWARD,
searchstr, searchstrlen, count, spats[0].off.end + (options &
(SEARCH_KEEP + SEARCH_PEEK + SEARCH_HIS
+ SEARCH_MSG + SEARCH_START
+ ((pat != NULL && *pat == ';') ? 0 : SEARCH_NOOF))),
RE_LAST, sia);
if (dircp != NULL)
*dircp = search_delim; // restore second '/' or '?' for normal_cmd()
if (!shortmess(SHM_SEARCH)
&& ((dirc == '/' && LT_POS(pos, curwin->w_cursor))
|| (dirc == '?' && LT_POS(curwin->w_cursor, pos))))
show_top_bot_msg = TRUE;
if (c == FAIL)
{
retval = 0;
goto end_do_search;
}
if (spats[0].off.end && oap != NULL)
oap->inclusive = TRUE; // 'e' includes last character
retval = 1; // pattern found
/*
* Add character and/or line offset
*/
if (!(options & SEARCH_NOOF) || (pat != NULL && *pat == ';'))
{
pos_T org_pos = pos;
if (spats[0].off.line) // Add the offset to the line number.
{
c = pos.lnum + spats[0].off.off;
if (c < 1)
pos.lnum = 1;
else if (c > curbuf->b_ml.ml_line_count)
pos.lnum = curbuf->b_ml.ml_line_count;
else
pos.lnum = c;
pos.col = 0;
retval = 2; // pattern found, line offset added
}
else if (pos.col < MAXCOL - 2) // just in case
{
// to the right, check for end of file
c = spats[0].off.off;
if (c > 0)
{
while (c-- > 0)
if (incl(&pos) == -1)
break;
}
// to the left, check for start of file
else
{
while (c++ < 0)
if (decl(&pos) == -1)
break;
}
}
if (!EQUAL_POS(pos, org_pos))
has_offset = TRUE;
}
// Show [1/15] if 'S' is not in 'shortmess'.
if (show_search_stats)
cmdline_search_stat(dirc, &pos, &curwin->w_cursor,
show_top_bot_msg, msgbuf, msgbuflen,
(count != 1 || has_offset
#ifdef FEAT_FOLDING
|| (!(fdo_flags & FDO_SEARCH)
&& hasFolding(curwin->w_cursor.lnum,
NULL, NULL))
#endif
),
SEARCH_STAT_DEF_MAX_COUNT,
SEARCH_STAT_DEF_TIMEOUT);
/*
* The search command can be followed by a ';' to do another search.
* For example: "/pat/;/foo/+3;?bar"
* This is like doing another search command, except:
* - The remembered direction '/' or '?' is from the first search.
* - When an error happens the cursor isn't moved at all.
* Don't do this when called by get_address() (it handles ';' itself).
*/
if (!(options & SEARCH_OPT) || pat == NULL || *pat != ';')
break;
dirc = *++pat;
search_delim = dirc;
if (dirc != '?' && dirc != '/')
{
retval = 0;
emsg(_(e_expected_question_or_slash_after_semicolon));
goto end_do_search;
}
++pat;
--patlen;
}
if (options & SEARCH_MARK)
setpcmark();
curwin->w_cursor = pos;
curwin->w_set_curswant = TRUE;
end_do_search:
if ((options & SEARCH_KEEP) || (cmdmod.cmod_flags & CMOD_KEEPPATTERNS))
spats[0].off = old_off;
vim_free(strcopy);
vim_free(msgbuf);
return retval;
}
/*
* search_for_exact_line(buf, pos, dir, pat)
*
* Search for a line starting with the given pattern (ignoring leading
* white-space), starting from pos and going in direction "dir". "pos" will
* contain the position of the match found. Blank lines match only if
* ADDING is set. If p_ic is set then the pattern must be in lowercase.
* Return OK for success, or FAIL if no line found.
*/
int
search_for_exact_line(
buf_T *buf,
pos_T *pos,
int dir,
char_u *pat)
{
linenr_T start = 0;
char_u *ptr;
char_u *p;
if (buf->b_ml.ml_line_count == 0)
return FAIL;
for (;;)
{
pos->lnum += dir;
if (pos->lnum < 1)
{
if (p_ws)
{
pos->lnum = buf->b_ml.ml_line_count;
if (!shortmess(SHM_SEARCH))
give_warning((char_u *)_(top_bot_msg), TRUE);
}
else
{
pos->lnum = 1;
break;
}
}
else if (pos->lnum > buf->b_ml.ml_line_count)
{
if (p_ws)
{
pos->lnum = 1;
if (!shortmess(SHM_SEARCH))
give_warning((char_u *)_(bot_top_msg), TRUE);
}
else
{
pos->lnum = 1;
break;
}
}
if (pos->lnum == start)
break;
if (start == 0)
start = pos->lnum;
ptr = ml_get_buf(buf, pos->lnum, FALSE);
p = skipwhite(ptr);
pos->col = (colnr_T) (p - ptr);
// when adding lines the matching line may be empty but it is not
// ignored because we are interested in the next line -- Acevedo
if (compl_status_adding() && !compl_status_sol())
{
if ((p_ic ? MB_STRICMP(p, pat) : STRCMP(p, pat)) == 0)
return OK;
}
else if (*p != NUL) // ignore empty lines
{ // expanding lines or words
if ((p_ic ? MB_STRNICMP(p, pat, ins_compl_len())
: STRNCMP(p, pat, ins_compl_len())) == 0)
return OK;
}
}
return FAIL;
}
/*
* Character Searches
*/
/*
* Search for a character in a line. If "t_cmd" is FALSE, move to the
* position of the character, otherwise move to just before the char.
* Do this "cap->count1" times.
* Return FAIL or OK.
*/
int
searchc(cmdarg_T *cap, int t_cmd)
{
int c = cap->nchar; // char to search for
int dir = cap->arg; // TRUE for searching forward
long count = cap->count1; // repeat count
int col;
char_u *p;
int len;
int stop = TRUE;
if (c != NUL) // normal search: remember args for repeat
{
if (!KeyStuffed) // don't remember when redoing
{
*lastc = c;
set_csearch_direction(dir);
set_csearch_until(t_cmd);
lastc_bytelen = (*mb_char2bytes)(c, lastc_bytes);
if (cap->ncharC1 != 0)
{
lastc_bytelen += (*mb_char2bytes)(cap->ncharC1,
lastc_bytes + lastc_bytelen);
if (cap->ncharC2 != 0)
lastc_bytelen += (*mb_char2bytes)(cap->ncharC2,
lastc_bytes + lastc_bytelen);
}
}
}
else // repeat previous search
{
if (*lastc == NUL && lastc_bytelen <= 1)
return FAIL;
if (dir) // repeat in opposite direction
dir = -lastcdir;
else
dir = lastcdir;
t_cmd = last_t_cmd;
c = *lastc;
// For multi-byte re-use last lastc_bytes[] and lastc_bytelen.
// Force a move of at least one char, so ";" and "," will move the
// cursor, even if the cursor is right in front of char we are looking
// at.
if (vim_strchr(p_cpo, CPO_SCOLON) == NULL && count == 1 && t_cmd)
stop = FALSE;
}
if (dir == BACKWARD)
cap->oap->inclusive = FALSE;
else
cap->oap->inclusive = TRUE;
p = ml_get_curline();
col = curwin->w_cursor.col;
len = ml_get_curline_len();
while (count--)
{
if (has_mbyte)
{
for (;;)
{
if (dir > 0)
{
col += (*mb_ptr2len)(p + col);
if (col >= len)
return FAIL;
}
else
{
if (col == 0)
return FAIL;
col -= (*mb_head_off)(p, p + col - 1) + 1;
}
if (lastc_bytelen <= 1)
{
if (p[col] == c && stop)
break;
}
else if (STRNCMP(p + col, lastc_bytes, lastc_bytelen) == 0
&& stop)
break;
stop = TRUE;
}
}
else
{
for (;;)
{
if ((col += dir) < 0 || col >= len)
return FAIL;
if (p[col] == c && stop)
break;
stop = TRUE;
}
}
}
if (t_cmd)
{
// backup to before the character (possibly double-byte)
col -= dir;
if (has_mbyte)
{
if (dir < 0)
// Landed on the search char which is lastc_bytelen long
col += lastc_bytelen - 1;
else
// To previous char, which may be multi-byte.
col -= (*mb_head_off)(p, p + col);
}
}
curwin->w_cursor.col = col;
return OK;
}
/*
* "Other" Searches
*/
/*
* findmatch - find the matching paren or brace
*
* Improvement over vi: Braces inside quotes are ignored.
*/
pos_T *
findmatch(oparg_T *oap, int initc)
{
return findmatchlimit(oap, initc, 0, 0);
}
/*
* Return TRUE if the character before "linep[col]" equals "ch".
* Return FALSE if "col" is zero.
* Update "*prevcol" to the column of the previous character, unless "prevcol"
* is NULL.
* Handles multibyte string correctly.
*/
static int
check_prevcol(
char_u *linep,
int col,
int ch,
int *prevcol)
{
--col;
if (col > 0 && has_mbyte)
col -= (*mb_head_off)(linep, linep + col);
if (prevcol)
*prevcol = col;
return (col >= 0 && linep[col] == ch) ? TRUE : FALSE;
}
/*
* Raw string start is found at linep[startpos.col - 1].
* Return TRUE if the matching end can be found between startpos and endpos.
*/
static int
find_rawstring_end(char_u *linep, pos_T *startpos, pos_T *endpos)
{
char_u *p;
char_u *delim_copy;
size_t delim_len;
linenr_T lnum;
int found = FALSE;
for (p = linep + startpos->col + 1; *p && *p != '('; ++p)
;
delim_len = (p - linep) - startpos->col - 1;
delim_copy = vim_strnsave(linep + startpos->col + 1, delim_len);
if (delim_copy == NULL)
return FALSE;
for (lnum = startpos->lnum; lnum <= endpos->lnum; ++lnum)
{
char_u *line = ml_get(lnum);
for (p = line + (lnum == startpos->lnum
? startpos->col + 1 : 0); *p; ++p)
{
if (lnum == endpos->lnum && (colnr_T)(p - line) >= endpos->col)
break;
if (*p == ')' && STRNCMP(delim_copy, p + 1, delim_len) == 0
&& p[delim_len + 1] == '"')
{
found = TRUE;
break;
}
}
if (found)
break;
}
vim_free(delim_copy);
return found;
}
/*
* Check matchpairs option for "*initc".
* If there is a match set "*initc" to the matching character and "*findc" to
* the opposite character. Set "*backwards" to the direction.
* When "switchit" is TRUE swap the direction.
*/
static void
find_mps_values(
int *initc,
int *findc,
int *backwards,
int switchit)
{
char_u *ptr;
ptr = curbuf->b_p_mps;
while (*ptr != NUL)
{
if (has_mbyte)
{
char_u *prev;
if (mb_ptr2char(ptr) == *initc)
{
if (switchit)
{
*findc = *initc;
*initc = mb_ptr2char(ptr + mb_ptr2len(ptr) + 1);
*backwards = TRUE;
}
else
{
*findc = mb_ptr2char(ptr + mb_ptr2len(ptr) + 1);
*backwards = FALSE;
}
return;
}
prev = ptr;
ptr += mb_ptr2len(ptr) + 1;
if (mb_ptr2char(ptr) == *initc)
{
if (switchit)
{
*findc = *initc;
*initc = mb_ptr2char(prev);
*backwards = FALSE;
}
else
{
*findc = mb_ptr2char(prev);
*backwards = TRUE;
}
return;
}
ptr += mb_ptr2len(ptr);
}
else
{
if (*ptr == *initc)
{
if (switchit)
{
*backwards = TRUE;
*findc = *initc;
*initc = ptr[2];
}
else
{
*backwards = FALSE;
*findc = ptr[2];
}
return;
}
ptr += 2;
if (*ptr == *initc)
{
if (switchit)
{
*backwards = FALSE;
*findc = *initc;
*initc = ptr[-2];
}
else
{
*backwards = TRUE;
*findc = ptr[-2];
}
return;
}
++ptr;
}
if (*ptr == ',')
++ptr;
}
}
/*
* findmatchlimit -- find the matching paren or brace, if it exists within
* maxtravel lines of the cursor. A maxtravel of 0 means search until falling
* off the edge of the file.
*
* "initc" is the character to find a match for. NUL means to find the
* character at or after the cursor. Special values:
* '*' look for C-style comment / *
* '/' look for C-style comment / *, ignoring comment-end
* '#' look for preprocessor directives
* 'R' look for raw string start: R"delim(text)delim" (only backwards)
*
* flags: FM_BACKWARD search backwards (when initc is '/', '*' or '#')
* FM_FORWARD search forwards (when initc is '/', '*' or '#')
* FM_BLOCKSTOP stop at start/end of block ({ or } in column 0)
* FM_SKIPCOMM skip comments (not implemented yet!)
*
* "oap" is only used to set oap->motion_type for a linewise motion, it can be
* NULL
*/
pos_T *
findmatchlimit(
oparg_T *oap,
int initc,
int flags,
int maxtravel)
{
static pos_T pos; // current search position
int findc = 0; // matching brace
int c;
int count = 0; // cumulative number of braces
int backwards = FALSE; // init for gcc
int raw_string = FALSE; // search for raw string
int inquote = FALSE; // TRUE when inside quotes
char_u *linep; // pointer to current line
char_u *ptr;
int do_quotes; // check for quotes in current line
int at_start; // do_quotes value at start position
int hash_dir = 0; // Direction searched for # things
int comment_dir = 0; // Direction searched for comments
pos_T match_pos; // Where last slash-star was found
int start_in_quotes; // start position is in quotes
int traveled = 0; // how far we've searched so far
int ignore_cend = FALSE; // ignore comment end
int cpo_match; // vi compatible matching
int cpo_bsl; // don't recognize backslashes
int match_escaped = 0; // search for escaped match
int dir; // Direction to search
int comment_col = MAXCOL; // start of / / comment
int lispcomm = FALSE; // inside of Lisp-style comment
int lisp = curbuf->b_p_lisp; // engage Lisp-specific hacks ;)
pos = curwin->w_cursor;
pos.coladd = 0;
linep = ml_get(pos.lnum);
cpo_match = (vim_strchr(p_cpo, CPO_MATCH) != NULL);
cpo_bsl = (vim_strchr(p_cpo, CPO_MATCHBSL) != NULL);
// Direction to search when initc is '/', '*' or '#'
if (flags & FM_BACKWARD)
dir = BACKWARD;
else if (flags & FM_FORWARD)
dir = FORWARD;
else
dir = 0;
/*
* if initc given, look in the table for the matching character
* '/' and '*' are special cases: look for start or end of comment.
* When '/' is used, we ignore running backwards into an star-slash, for
* "[*" command, we just want to find any comment.
*/
if (initc == '/' || initc == '*' || initc == 'R')
{
comment_dir = dir;
if (initc == '/')
ignore_cend = TRUE;
backwards = (dir == FORWARD) ? FALSE : TRUE;
raw_string = (initc == 'R');
initc = NUL;
}
else if (initc != '#' && initc != NUL)
{
find_mps_values(&initc, &findc, &backwards, TRUE);
if (dir)
backwards = (dir == FORWARD) ? FALSE : TRUE;
if (findc == NUL)
return NULL;
}
else
{
/*
* Either initc is '#', or no initc was given and we need to look
* under the cursor.
*/
if (initc == '#')
{
hash_dir = dir;
}
else
{
/*
* initc was not given, must look for something to match under
* or near the cursor.
* Only check for special things when 'cpo' doesn't have '%'.
*/
if (!cpo_match)
{
// Are we before or at #if, #else etc.?
ptr = skipwhite(linep);
if (*ptr == '#' && pos.col <= (colnr_T)(ptr - linep))
{
ptr = skipwhite(ptr + 1);
if ( STRNCMP(ptr, "if", 2) == 0
|| STRNCMP(ptr, "endif", 5) == 0
|| STRNCMP(ptr, "el", 2) == 0)
hash_dir = 1;
}
// Are we on a comment?
else if (linep[pos.col] == '/')
{
if (linep[pos.col + 1] == '*')
{
comment_dir = FORWARD;
backwards = FALSE;
pos.col++;
}
else if (pos.col > 0 && linep[pos.col - 1] == '*')
{
comment_dir = BACKWARD;
backwards = TRUE;
pos.col--;
}
}
else if (linep[pos.col] == '*')
{
if (linep[pos.col + 1] == '/')
{
comment_dir = BACKWARD;
backwards = TRUE;
}
else if (pos.col > 0 && linep[pos.col - 1] == '/')
{
comment_dir = FORWARD;
backwards = FALSE;
}
}
}
/*
* If we are not on a comment or the # at the start of a line, then
* look for brace anywhere on this line after the cursor.
*/
if (!hash_dir && !comment_dir)
{
/*
* Find the brace under or after the cursor.
* If beyond the end of the line, use the last character in
* the line.
*/
if (linep[pos.col] == NUL && pos.col)
--pos.col;
for (;;)
{
initc = PTR2CHAR(linep + pos.col);
if (initc == NUL)
break;
find_mps_values(&initc, &findc, &backwards, FALSE);
if (findc)
break;
pos.col += mb_ptr2len(linep + pos.col);
}
if (!findc)
{
// no brace in the line, maybe use " #if" then
if (!cpo_match && *skipwhite(linep) == '#')
hash_dir = 1;
else
return NULL;
}
else if (!cpo_bsl)
{
int col, bslcnt = 0;
// Set "match_escaped" if there are an odd number of
// backslashes.
for (col = pos.col; check_prevcol(linep, col, '\\', &col);)
bslcnt++;
match_escaped = (bslcnt & 1);
}
}
}
if (hash_dir)
{
/*
* Look for matching #if, #else, #elif, or #endif
*/
if (oap != NULL)
oap->motion_type = MLINE; // Linewise for this case only
if (initc != '#')
{
ptr = skipwhite(skipwhite(linep) + 1);
if (STRNCMP(ptr, "if", 2) == 0 || STRNCMP(ptr, "el", 2) == 0)
hash_dir = 1;
else if (STRNCMP(ptr, "endif", 5) == 0)
hash_dir = -1;
else
return NULL;
}
pos.col = 0;
while (!got_int)
{
if (hash_dir > 0)
{
if (pos.lnum == curbuf->b_ml.ml_line_count)
break;
}
else if (pos.lnum == 1)
break;
pos.lnum += hash_dir;
linep = ml_get(pos.lnum);
line_breakcheck(); // check for CTRL-C typed
ptr = skipwhite(linep);
if (*ptr != '#')
continue;
pos.col = (colnr_T) (ptr - linep);
ptr = skipwhite(ptr + 1);
if (hash_dir > 0)
{
if (STRNCMP(ptr, "if", 2) == 0)
count++;
else if (STRNCMP(ptr, "el", 2) == 0)
{
if (count == 0)
return &pos;
}
else if (STRNCMP(ptr, "endif", 5) == 0)
{
if (count == 0)
return &pos;
count--;
}
}
else
{
if (STRNCMP(ptr, "if", 2) == 0)
{
if (count == 0)
return &pos;
count--;
}
else if (initc == '#' && STRNCMP(ptr, "el", 2) == 0)
{
if (count == 0)
return &pos;
}
else if (STRNCMP(ptr, "endif", 5) == 0)
count++;
}
}
return NULL;
}
}
#ifdef FEAT_RIGHTLEFT
// This is just guessing: when 'rightleft' is set, search for a matching
// paren/brace in the other direction.
if (curwin->w_p_rl && vim_strchr((char_u *)"()[]{}<>", initc) != NULL)
backwards = !backwards;
#endif
do_quotes = -1;
start_in_quotes = MAYBE;
CLEAR_POS(&match_pos);
// backward search: Check if this line contains a single-line comment
if ((backwards && comment_dir) || lisp)
comment_col = check_linecomment(linep);
if (lisp && comment_col != MAXCOL && pos.col > (colnr_T)comment_col)
lispcomm = TRUE; // find match inside this comment
while (!got_int)
{
/*
* Go to the next position, forward or backward. We could use
* inc() and dec() here, but that is much slower
*/
if (backwards)
{
// char to match is inside of comment, don't search outside
if (lispcomm && pos.col < (colnr_T)comment_col)
break;
if (pos.col == 0) // at start of line, go to prev. one
{
if (pos.lnum == 1) // start of file
break;
--pos.lnum;
if (maxtravel > 0 && ++traveled > maxtravel)
break;
linep = ml_get(pos.lnum);
pos.col = ml_get_len(pos.lnum); // pos.col on trailing NUL
do_quotes = -1;
line_breakcheck();
// Check if this line contains a single-line comment
if (comment_dir || lisp)
comment_col = check_linecomment(linep);
// skip comment
if (lisp && comment_col != MAXCOL)
pos.col = comment_col;
}
else
{
--pos.col;
if (has_mbyte)
pos.col -= (*mb_head_off)(linep, linep + pos.col);
}
}
else // forward search
{
if (linep[pos.col] == NUL
// at end of line, go to next one
// For lisp don't search for match in comment
|| (lisp && comment_col != MAXCOL
&& pos.col == (colnr_T)comment_col))
{
if (pos.lnum == curbuf->b_ml.ml_line_count // end of file
// line is exhausted and comment with it,
// don't search for match in code
|| lispcomm)
break;
++pos.lnum;
if (maxtravel && traveled++ > maxtravel)
break;
linep = ml_get(pos.lnum);
pos.col = 0;
do_quotes = -1;
line_breakcheck();
if (lisp) // find comment pos in new line
comment_col = check_linecomment(linep);
}
else
{
if (has_mbyte)
pos.col += (*mb_ptr2len)(linep + pos.col);
else
++pos.col;
}
}
/*
* If FM_BLOCKSTOP given, stop at a '{' or '}' in column 0.
*/
if (pos.col == 0 && (flags & FM_BLOCKSTOP)
&& (linep[0] == '{' || linep[0] == '}'))
{
if (linep[0] == findc && count == 0) // match!
return &pos;
break; // out of scope
}
if (comment_dir)
{
// Note: comments do not nest, and we ignore quotes in them
// TODO: ignore comment brackets inside strings
if (comment_dir == FORWARD)
{
if (linep[pos.col] == '*' && linep[pos.col + 1] == '/')
{
pos.col++;
return &pos;
}
}
else // Searching backwards
{
/*
* A comment may contain / * or / /, it may also start or end
* with / * /. Ignore a / * after / / and after *.
*/
if (pos.col == 0)
continue;
else if (raw_string)
{
if (linep[pos.col - 1] == 'R'
&& linep[pos.col] == '"'
&& vim_strchr(linep + pos.col + 1, '(') != NULL)
{
// Possible start of raw string. Now that we have the
// delimiter we can check if it ends before where we
// started searching, or before the previously found
// raw string start.
if (!find_rawstring_end(linep, &pos,
count > 0 ? &match_pos : &curwin->w_cursor))
{
count++;
match_pos = pos;
match_pos.col--;
}
linep = ml_get(pos.lnum); // may have been released
}
}
else if ( linep[pos.col - 1] == '/'
&& linep[pos.col] == '*'
&& (pos.col == 1 || linep[pos.col - 2] != '*')
&& (int)pos.col < comment_col)
{
count++;
match_pos = pos;
match_pos.col--;
}
else if (linep[pos.col - 1] == '*' && linep[pos.col] == '/')
{
if (count > 0)
pos = match_pos;
else if (pos.col > 1 && linep[pos.col - 2] == '/'
&& (int)pos.col <= comment_col)
pos.col -= 2;
else if (ignore_cend)
continue;
else
return NULL;
return &pos;
}
}
continue;
}
/*
* If smart matching ('cpoptions' does not contain '%'), braces inside
* of quotes are ignored, but only if there is an even number of
* quotes in the line.
*/
if (cpo_match)
do_quotes = 0;
else if (do_quotes == -1)
{
/*
* Count the number of quotes in the line, skipping \" and '"'.
* Watch out for "\\".
*/
at_start = do_quotes;
for (ptr = linep; *ptr; ++ptr)
{
if (ptr == linep + pos.col + backwards)
at_start = (do_quotes & 1);
if (*ptr == '"'
&& (ptr == linep || ptr[-1] != '\'' || ptr[1] != '\''))
++do_quotes;
if (*ptr == '\\' && ptr[1] != NUL)
++ptr;
}
do_quotes &= 1; // result is 1 with even number of quotes
/*
* If we find an uneven count, check current line and previous
* one for a '\' at the end.
*/
if (!do_quotes)
{
inquote = FALSE;
if (ptr[-1] == '\\')
{
do_quotes = 1;
if (start_in_quotes == MAYBE)
{
// Do we need to use at_start here?
inquote = TRUE;
start_in_quotes = TRUE;
}
else if (backwards)
inquote = TRUE;
}
if (pos.lnum > 1)
{
ptr = ml_get(pos.lnum - 1);
if (*ptr && *(ptr + ml_get_len(pos.lnum - 1) - 1) == '\\')
{
do_quotes = 1;
if (start_in_quotes == MAYBE)
{
inquote = at_start;
if (inquote)
start_in_quotes = TRUE;
}
else if (!backwards)
inquote = TRUE;
}
// ml_get() only keeps one line, need to get linep again
linep = ml_get(pos.lnum);
}
}
}
if (start_in_quotes == MAYBE)
start_in_quotes = FALSE;
/*
* If 'smartmatch' is set:
* Things inside quotes are ignored by setting 'inquote'. If we
* find a quote without a preceding '\' invert 'inquote'. At the
* end of a line not ending in '\' we reset 'inquote'.
*
* In lines with an uneven number of quotes (without preceding '\')
* we do not know which part to ignore. Therefore we only set
* inquote if the number of quotes in a line is even, unless this
* line or the previous one ends in a '\'. Complicated, isn't it?
*/
c = PTR2CHAR(linep + pos.col);
switch (c)
{
case NUL:
// at end of line without trailing backslash, reset inquote
if (pos.col == 0 || linep[pos.col - 1] != '\\')
{
inquote = FALSE;
start_in_quotes = FALSE;
}
break;
case '"':
// a quote that is preceded with an odd number of backslashes is
// ignored
if (do_quotes)
{
int col;
for (col = pos.col - 1; col >= 0; --col)
if (linep[col] != '\\')
break;
if ((((int)pos.col - 1 - col) & 1) == 0)
{
inquote = !inquote;
start_in_quotes = FALSE;
}
}
break;
/*
* If smart matching ('cpoptions' does not contain '%'):
* Skip things in single quotes: 'x' or '\x'. Be careful for single
* single quotes, eg jon's. Things like '\233' or '\x3f' are not
* skipped, there is never a brace in them.
* Ignore this when finding matches for `'.
*/
case '\'':
if (!cpo_match && initc != '\'' && findc != '\'')
{
if (backwards)
{
if (pos.col > 1)
{
if (linep[pos.col - 2] == '\'')
{
pos.col -= 2;
break;
}
else if (linep[pos.col - 2] == '\\'
&& pos.col > 2 && linep[pos.col - 3] == '\'')
{
pos.col -= 3;
break;
}
}
}
else if (linep[pos.col + 1]) // forward search
{
if (linep[pos.col + 1] == '\\'
&& linep[pos.col + 2] && linep[pos.col + 3] == '\'')
{
pos.col += 3;
break;
}
else if (linep[pos.col + 2] == '\'')
{
pos.col += 2;
break;
}
}
}
// FALLTHROUGH
default:
/*
* For Lisp skip over backslashed (), {} and [].
* (actually, we skip #\( et al)
*/
if (curbuf->b_p_lisp
&& vim_strchr((char_u *)"{}()[]", c) != NULL
&& pos.col > 1
&& check_prevcol(linep, pos.col, '\\', NULL)
&& check_prevcol(linep, pos.col - 1, '#', NULL))
break;
// Check for match outside of quotes, and inside of
// quotes when the start is also inside of quotes.
if ((!inquote || start_in_quotes == TRUE)
&& (c == initc || c == findc))
{
int col, bslcnt = 0;
if (!cpo_bsl)
{
for (col = pos.col; check_prevcol(linep, col, '\\', &col);)
bslcnt++;
}
// Only accept a match when 'M' is in 'cpo' or when escaping
// is what we expect.
if (cpo_bsl || (bslcnt & 1) == match_escaped)
{
if (c == initc)
count++;
else
{
if (count == 0)
return &pos;
count--;
}
}
}
}
}
if (comment_dir == BACKWARD && count > 0)
{
pos = match_pos;
return &pos;
}
return (pos_T *)NULL; // never found it
}
/*
* Check if line[] contains a / / comment.
* Return MAXCOL if not, otherwise return the column.
*/
int
check_linecomment(char_u *line)
{
char_u *p;
p = line;
// skip Lispish one-line comments
if (curbuf->b_p_lisp)
{
if (vim_strchr(p, ';') != NULL) // there may be comments
{
int in_str = FALSE; // inside of string
p = line; // scan from start
while ((p = vim_strpbrk(p, (char_u *)"\";")) != NULL)
{
if (*p == '"')
{
if (in_str)
{
if (*(p - 1) != '\\') // skip escaped quote
in_str = FALSE;
}
else if (p == line || ((p - line) >= 2
// skip #\" form
&& *(p - 1) != '\\' && *(p - 2) != '#'))
in_str = TRUE;
}
else if (!in_str && ((p - line) < 2
|| (*(p - 1) != '\\' && *(p - 2) != '#'))
&& !is_pos_in_string(line, (colnr_T)(p - line)))
break; // found!
++p;
}
}
else
p = NULL;
}
else
while ((p = vim_strchr(p, '/')) != NULL)
{
// Accept a double /, unless it's preceded with * and followed by
// *, because * / / * is an end and start of a C comment. Only
// accept the position if it is not inside a string.
if (p[1] == '/' && (p == line || p[-1] != '*' || p[2] != '*')
&& !is_pos_in_string(line, (colnr_T)(p - line)))
break;
++p;
}
if (p == NULL)
return MAXCOL;
return (int)(p - line);
}
/*
* Move cursor briefly to character matching the one under the cursor.
* Used for Insert mode and "r" command.
* Show the match only if it is visible on the screen.
* If there isn't a match, then beep.
*/
void
showmatch(
int c) // char to show match for
{
pos_T *lpos, save_cursor;
pos_T mpos;
colnr_T vcol;
long save_so;
long save_siso;
#ifdef CURSOR_SHAPE
int save_state;
#endif
colnr_T save_dollar_vcol;
char_u *p;
long *so = curwin->w_p_so >= 0 ? &curwin->w_p_so : &p_so;
long *siso = curwin->w_p_siso >= 0 ? &curwin->w_p_siso : &p_siso;
/*
* Only show match for chars in the 'matchpairs' option.
*/
// 'matchpairs' is "x:y,x:y"
for (p = curbuf->b_p_mps; *p != NUL; ++p)
{
#ifdef FEAT_RIGHTLEFT
if (PTR2CHAR(p) == c && (curwin->w_p_rl ^ p_ri))
break;
#endif
p += mb_ptr2len(p) + 1;
if (PTR2CHAR(p) == c
#ifdef FEAT_RIGHTLEFT
&& !(curwin->w_p_rl ^ p_ri)
#endif
)
break;
p += mb_ptr2len(p);
if (*p == NUL)
return;
}
if (*p == NUL)
return;
if ((lpos = findmatch(NULL, NUL)) == NULL) // no match, so beep
{
vim_beep(BO_MATCH);
return;
}
if (lpos->lnum < curwin->w_topline || lpos->lnum >= curwin->w_botline)
return;
if (!curwin->w_p_wrap)
getvcol(curwin, lpos, NULL, &vcol, NULL);
int col_visible = (curwin->w_p_wrap
|| (vcol >= curwin->w_leftcol
&& vcol < curwin->w_leftcol + curwin->w_width));
if (!col_visible)
return;
mpos = *lpos; // save the pos, update_screen() may change it
save_cursor = curwin->w_cursor;
save_so = *so;
save_siso = *siso;
// Handle "$" in 'cpo': If the ')' is typed on top of the "$",
// stop displaying the "$".
if (dollar_vcol >= 0 && dollar_vcol == curwin->w_virtcol)
dollar_vcol = -1;
++curwin->w_virtcol; // do display ')' just before "$"
update_screen(UPD_VALID); // show the new char first
save_dollar_vcol = dollar_vcol;
#ifdef CURSOR_SHAPE
save_state = State;
State = MODE_SHOWMATCH;
ui_cursor_shape(); // may show different cursor shape
#endif
curwin->w_cursor = mpos; // move to matching char
*so = 0; // don't use 'scrolloff' here
*siso = 0; // don't use 'sidescrolloff' here
showruler(FALSE);
setcursor();
cursor_on(); // make sure that the cursor is shown
out_flush_cursor(TRUE, FALSE);
// Restore dollar_vcol(), because setcursor() may call curs_rows()
// which resets it if the matching position is in a previous line
// and has a higher column number.
dollar_vcol = save_dollar_vcol;
/*
* brief pause, unless 'm' is present in 'cpo' and a character is
* available.
*/
if (vim_strchr(p_cpo, CPO_SHOWMATCH) != NULL)
ui_delay(p_mat * 100L + 8, TRUE);
else if (!char_avail())
ui_delay(p_mat * 100L + 9, FALSE);
curwin->w_cursor = save_cursor; // restore cursor position
*so = save_so;
*siso = save_siso;
#ifdef CURSOR_SHAPE
State = save_state;
ui_cursor_shape(); // may show different cursor shape
#endif
}
/*
* Check if the pattern is zero-width.
* If move is TRUE, check from the beginning of the buffer, else from position
* "cur".
* "direction" is FORWARD or BACKWARD.
* Returns TRUE, FALSE or -1 for failure.
*/
static int
is_zero_width(char_u *pattern, size_t patternlen, int move, pos_T *cur, int direction)
{
regmmatch_T regmatch;
int nmatched = 0;
int result = -1;
pos_T pos;
int called_emsg_before = called_emsg;
int flag = 0;
if (pattern == NULL)
{
pattern = spats[last_idx].pat;
patternlen = spats[last_idx].patlen;
}
if (search_regcomp(pattern, patternlen, NULL, RE_SEARCH, RE_SEARCH,
SEARCH_KEEP, &regmatch) == FAIL)
return -1;
// init startcol correctly
regmatch.startpos[0].col = -1;
// move to match
if (move)
{
CLEAR_POS(&pos);
}
else
{
pos = *cur;
// accept a match at the cursor position
flag = SEARCH_START;
}
if (searchit(curwin, curbuf, &pos, NULL, direction, pattern, patternlen, 1,
SEARCH_KEEP + flag, RE_SEARCH, NULL) != FAIL)
{
// Zero-width pattern should match somewhere, then we can check if
// start and end are in the same position.
do
{
regmatch.startpos[0].col++;
nmatched = vim_regexec_multi(&regmatch, curwin, curbuf,
pos.lnum, regmatch.startpos[0].col, NULL);
if (nmatched != 0)
break;
} while (regmatch.regprog != NULL
&& direction == FORWARD ? regmatch.startpos[0].col < pos.col
: regmatch.startpos[0].col > pos.col);
if (called_emsg == called_emsg_before)
{
result = (nmatched != 0
&& regmatch.startpos[0].lnum == regmatch.endpos[0].lnum
&& regmatch.startpos[0].col == regmatch.endpos[0].col);
}
}
vim_regfree(regmatch.regprog);
return result;
}
/*
* Find next search match under cursor, cursor at end.
* Used while an operator is pending, and in Visual mode.
*/
int
current_search(
long count,
int forward) // TRUE for forward, FALSE for backward
{
pos_T start_pos; // start position of the pattern match
pos_T end_pos; // end position of the pattern match
pos_T orig_pos; // position of the cursor at beginning
pos_T pos; // position after the pattern
int i;
int dir;
int result; // result of various function calls
char_u old_p_ws = p_ws;
int flags = 0;
pos_T save_VIsual = VIsual;
int zero_width;
int skip_first_backward;
// Correct cursor when 'selection' is exclusive
if (VIsual_active && *p_sel == 'e' && LT_POS(VIsual, curwin->w_cursor))
dec_cursor();
// When searching forward and the cursor is at the start of the Visual
// area, skip the first search backward, otherwise it doesn't move.
skip_first_backward = forward && VIsual_active
&& LT_POS(curwin->w_cursor, VIsual);
orig_pos = pos = curwin->w_cursor;
if (VIsual_active)
{
if (forward)
incl(&pos);
else
decl(&pos);
}
// Is the pattern is zero-width?, this time, don't care about the direction
zero_width = is_zero_width(spats[last_idx].pat, spats[last_idx].patlen,
TRUE, &curwin->w_cursor, FORWARD);
if (zero_width == -1)
return FAIL; // pattern not found
/*
* The trick is to first search backwards and then search forward again,
* so that a match at the current cursor position will be correctly
* captured. When "forward" is false do it the other way around.
*/
for (i = 0; i < 2; i++)
{
if (forward)
{
if (i == 0 && skip_first_backward)
continue;
dir = i;
}
else
dir = !i;
flags = 0;
if (!dir && !zero_width)
flags = SEARCH_END;
end_pos = pos;
// wrapping should not occur in the first round
if (i == 0)
p_ws = FALSE;
result = searchit(curwin, curbuf, &pos, &end_pos,
(dir ? FORWARD : BACKWARD),
spats[last_idx].pat, spats[last_idx].patlen, (long) (i ? count : 1),
SEARCH_KEEP | flags, RE_SEARCH, NULL);
p_ws = old_p_ws;
// First search may fail, but then start searching from the
// beginning of the file (cursor might be on the search match)
// except when Visual mode is active, so that extending the visual
// selection works.
if (i == 1 && !result) // not found, abort
{
curwin->w_cursor = orig_pos;
if (VIsual_active)
VIsual = save_VIsual;
return FAIL;
}
else if (i == 0 && !result)
{
if (forward)
{
// try again from start of buffer
CLEAR_POS(&pos);
}
else
{
// try again from end of buffer
// searching backwards, so set pos to last line and col
pos.lnum = curwin->w_buffer->b_ml.ml_line_count;
pos.col = ml_get_len(curwin->w_buffer->b_ml.ml_line_count);
}
}
}
start_pos = pos;
if (!VIsual_active)
VIsual = start_pos;
// put the cursor after the match
curwin->w_cursor = end_pos;
if (LT_POS(VIsual, end_pos) && forward)
{
if (skip_first_backward)
// put the cursor on the start of the match
curwin->w_cursor = pos;
else
// put the cursor on last character of match
dec_cursor();
}
else if (VIsual_active && LT_POS(curwin->w_cursor, VIsual) && forward)
curwin->w_cursor = pos; // put the cursor on the start of the match
VIsual_active = TRUE;
VIsual_mode = 'v';
if (*p_sel == 'e')
{
// Correction for exclusive selection depends on the direction.
if (forward && LTOREQ_POS(VIsual, curwin->w_cursor))
inc_cursor();
else if (!forward && LTOREQ_POS(curwin->w_cursor, VIsual))
inc(&VIsual);
}
#ifdef FEAT_FOLDING
if (fdo_flags & FDO_SEARCH && KeyTyped)
foldOpenCursor();
#endif
may_start_select('c');
setmouse();
#ifdef FEAT_CLIPBOARD
// Make sure the clipboard gets updated. Needed because start and
// end are still the same, and the selection needs to be owned
clip_star.vmode = NUL;
#endif
redraw_curbuf_later(UPD_INVERTED);
showmode();
return OK;
}
/*
* return TRUE if line 'lnum' is empty or has white chars only.
*/
int
linewhite(linenr_T lnum)
{
char_u *p;
p = skipwhite(ml_get(lnum));
return (*p == NUL);
}
/*
* Add the search count "[3/19]" to "msgbuf".
* See update_search_stat() for other arguments.
*/
static void
cmdline_search_stat(
int dirc,
pos_T *pos,
pos_T *cursor_pos,
int show_top_bot_msg,
char_u *msgbuf,
size_t msgbuflen,
int recompute,
int maxcount,
long timeout)
{
searchstat_T stat;
update_search_stat(dirc, pos, cursor_pos, &stat, recompute, maxcount,
timeout);
if (stat.cur <= 0)
return;
char t[SEARCH_STAT_BUF_LEN];
size_t len;
#ifdef FEAT_RIGHTLEFT
if (curwin->w_p_rl && *curwin->w_p_rlc == 's')
{
if (stat.incomplete == 1)
len = vim_snprintf(t, SEARCH_STAT_BUF_LEN, "[?/??]");
else if (stat.cnt > maxcount && stat.cur > maxcount)
len = vim_snprintf(t, SEARCH_STAT_BUF_LEN, "[>%d/>%d]",
maxcount, maxcount);
else if (stat.cnt > maxcount)
len = vim_snprintf(t, SEARCH_STAT_BUF_LEN, "[>%d/%d]",
maxcount, stat.cur);
else
len = vim_snprintf(t, SEARCH_STAT_BUF_LEN, "[%d/%d]",
stat.cnt, stat.cur);
}
else
#endif
{
if (stat.incomplete == 1)
len = vim_snprintf(t, SEARCH_STAT_BUF_LEN, "[?/??]");
else if (stat.cnt > maxcount && stat.cur > maxcount)
len = vim_snprintf(t, SEARCH_STAT_BUF_LEN, "[>%d/>%d]",
maxcount, maxcount);
else if (stat.cnt > maxcount)
len = vim_snprintf(t, SEARCH_STAT_BUF_LEN, "[%d/>%d]",
stat.cur, maxcount);
else
len = vim_snprintf(t, SEARCH_STAT_BUF_LEN, "[%d/%d]",
stat.cur, stat.cnt);
}
if (show_top_bot_msg && len + 2 < SEARCH_STAT_BUF_LEN)
{
mch_memmove(t + 2, t, len);
t[0] = 'W';
t[1] = ' ';
len += 2;
}
if (len > msgbuflen)
len = msgbuflen;
mch_memmove(msgbuf + msgbuflen - len, t, len);
if (dirc == '?' && stat.cur == maxcount + 1)
stat.cur = -1;
// keep the message even after redraw, but don't put in history
msg_hist_off = TRUE;
give_warning(msgbuf, FALSE);
msg_hist_off = FALSE;
}
/*
* Add the search count information to "stat".
* "stat" must not be NULL.
* When "recompute" is TRUE always recompute the numbers.
* dirc == 0: don't find the next/previous match (only set the result to "stat")
* dirc == '/': find the next match
* dirc == '?': find the previous match
*/
static void
update_search_stat(
int dirc,
pos_T *pos,
pos_T *cursor_pos,
searchstat_T *stat,
int recompute,
int maxcount,
long timeout UNUSED)
{
int save_ws = p_ws;
int wraparound = FALSE;
pos_T p = (*pos);
static pos_T lastpos = {0, 0, 0};
static int cur = 0;
static int cnt = 0;
static int exact_match = FALSE;
static int incomplete = 0;
static int last_maxcount = SEARCH_STAT_DEF_MAX_COUNT;
static int chgtick = 0;
static char_u *lastpat = NULL;
static buf_T *lbuf = NULL;
#ifdef FEAT_RELTIME
proftime_T start;
#endif
CLEAR_POINTER(stat);
if (dirc == 0 && !recompute && !EMPTY_POS(lastpos))
{
stat->cur = cur;
stat->cnt = cnt;
stat->exact_match = exact_match;
stat->incomplete = incomplete;
stat->last_maxcount = last_maxcount;
return;
}
last_maxcount = maxcount;
wraparound = ((dirc == '?' && LT_POS(lastpos, p))
|| (dirc == '/' && LT_POS(p, lastpos)));
// If anything relevant changed the count has to be recomputed.
// MB_STRNICMP ignores case, but we should not ignore case.
// Unfortunately, there is no MB_STRNICMP function.
// XXX: above comment should be "no MB_STRCMP function" ?
if (!(chgtick == CHANGEDTICK(curbuf)
&& MB_STRNICMP(lastpat, spats[last_idx].pat, STRLEN(lastpat)) == 0
&& STRLEN(lastpat) == STRLEN(spats[last_idx].pat)
&& EQUAL_POS(lastpos, *cursor_pos)
&& lbuf == curbuf) || wraparound || cur < 0
|| (maxcount > 0 && cur > maxcount) || recompute)
{
cur = 0;
cnt = 0;
exact_match = FALSE;
incomplete = 0;
CLEAR_POS(&lastpos);
lbuf = curbuf;
}
// when searching backwards and having jumped to the first occurrence,
// cur must remain greater than 1
if (EQUAL_POS(lastpos, *cursor_pos) && !wraparound
&& (dirc == 0 || dirc == '/' ? cur < cnt : cur > 1))
cur += dirc == 0 ? 0 : dirc == '/' ? 1 : -1;
else
{
int done_search = FALSE;
pos_T endpos = {0, 0, 0};
p_ws = FALSE;
#ifdef FEAT_RELTIME
if (timeout > 0)
profile_setlimit(timeout, &start);
#endif
while (!got_int && searchit(curwin, curbuf, &lastpos, &endpos,
FORWARD, NULL, 0, 1, SEARCH_KEEP, RE_LAST, NULL) != FAIL)
{
done_search = TRUE;
#ifdef FEAT_RELTIME
// Stop after passing the time limit.
if (timeout > 0 && profile_passed_limit(&start))
{
incomplete = 1;
break;
}
#endif
cnt++;
if (LTOREQ_POS(lastpos, p))
{
cur = cnt;
if (LT_POS(p, endpos))
exact_match = TRUE;
}
fast_breakcheck();
if (maxcount > 0 && cnt > maxcount)
{
incomplete = 2; // max count exceeded
break;
}
}
if (got_int)
cur = -1; // abort
if (done_search)
{
vim_free(lastpat);
lastpat = vim_strsave(spats[last_idx].pat);
chgtick = CHANGEDTICK(curbuf);
lbuf = curbuf;
lastpos = p;
}
}
stat->cur = cur;
stat->cnt = cnt;
stat->exact_match = exact_match;
stat->incomplete = incomplete;
stat->last_maxcount = last_maxcount;
p_ws = save_ws;
}
#if defined(FEAT_FIND_ID) || defined(PROTO)
/*
* Get line "lnum" and copy it into "buf[LSIZE]".
* The copy is made because the regexp may make the line invalid when using a
* mark.
*/
static char_u *
get_line_and_copy(linenr_T lnum, char_u *buf)
{
char_u *line = ml_get(lnum);
vim_strncpy(buf, line, LSIZE - 1);
return buf;
}
/*
* Find identifiers or defines in included files.
* If p_ic && compl_status_sol() then ptr must be in lowercase.
*/
void
find_pattern_in_path(
char_u *ptr, // pointer to search pattern
int dir UNUSED, // direction of expansion
int len, // length of search pattern
int whole, // match whole words only
int skip_comments, // don't match inside comments
int type, // Type of search; are we looking for a type?
// a macro?
long count,
int action, // What to do when we find it
linenr_T start_lnum, // first line to start searching
linenr_T end_lnum, // last line for searching
int forceit) // If true, always switch to the found path
{
SearchedFile *files; // Stack of included files
SearchedFile *bigger; // When we need more space
int max_path_depth = 50;
long match_count = 1;
char_u *pat;
char_u *new_fname;
char_u *curr_fname = curbuf->b_fname;
char_u *prev_fname = NULL;
linenr_T lnum;
int depth;
int depth_displayed; // For type==CHECK_PATH
int old_files;
int already_searched;
char_u *file_line;
char_u *line;
char_u *p;
char_u save_char;
int define_matched;
regmatch_T regmatch;
regmatch_T incl_regmatch;
regmatch_T def_regmatch;
int matched = FALSE;
int did_show = FALSE;
int found = FALSE;
int i;
char_u *already = NULL;
char_u *startp = NULL;
char_u *inc_opt = NULL;
#if defined(FEAT_QUICKFIX)
win_T *curwin_save = NULL;
#endif
regmatch.regprog = NULL;
incl_regmatch.regprog = NULL;
def_regmatch.regprog = NULL;
file_line = alloc(LSIZE);
if (file_line == NULL)
return;
if (type != CHECK_PATH && type != FIND_DEFINE
// when CONT_SOL is set compare "ptr" with the beginning of the
// line is faster than quote_meta/regcomp/regexec "ptr" -- Acevedo
&& !compl_status_sol())
{
pat = alloc(len + 5);
if (pat == NULL)
goto fpip_end;
vim_snprintf((char *)pat, len + 5, whole ? "\\<%.*s\\>" : "%.*s", len, ptr);
// ignore case according to p_ic, p_scs and pat
regmatch.rm_ic = ignorecase(pat);
regmatch.regprog = vim_regcomp(pat, magic_isset() ? RE_MAGIC : 0);
vim_free(pat);
if (regmatch.regprog == NULL)
goto fpip_end;
}
inc_opt = (*curbuf->b_p_inc == NUL) ? p_inc : curbuf->b_p_inc;
if (*inc_opt != NUL)
{
incl_regmatch.regprog = vim_regcomp(inc_opt,
magic_isset() ? RE_MAGIC : 0);
if (incl_regmatch.regprog == NULL)
goto fpip_end;
incl_regmatch.rm_ic = FALSE; // don't ignore case in incl. pat.
}
if (type == FIND_DEFINE && (*curbuf->b_p_def != NUL || *p_def != NUL))
{
def_regmatch.regprog = vim_regcomp(*curbuf->b_p_def == NUL ? p_def : curbuf->b_p_def,
magic_isset() ? RE_MAGIC : 0);
if (def_regmatch.regprog == NULL)
goto fpip_end;
def_regmatch.rm_ic = FALSE; // don't ignore case in define pat.
}
files = lalloc_clear(max_path_depth * sizeof(SearchedFile), TRUE);
if (files == NULL)
goto fpip_end;
old_files = max_path_depth;
depth = depth_displayed = -1;
lnum = start_lnum;
if (end_lnum > curbuf->b_ml.ml_line_count)
end_lnum = curbuf->b_ml.ml_line_count;
if (lnum > end_lnum) // do at least one line
lnum = end_lnum;
line = get_line_and_copy(lnum, file_line);
for (;;)
{
if (incl_regmatch.regprog != NULL
&& vim_regexec(&incl_regmatch, line, (colnr_T)0))
{
char_u *p_fname = (curr_fname == curbuf->b_fname)
? curbuf->b_ffname : curr_fname;
if (inc_opt != NULL && strstr((char *)inc_opt, "\\zs") != NULL)
// Use text from '\zs' to '\ze' (or end) of 'include'.
new_fname = find_file_name_in_path(incl_regmatch.startp[0],
(int)(incl_regmatch.endp[0] - incl_regmatch.startp[0]),
FNAME_EXP|FNAME_INCL|FNAME_REL, 1L, p_fname);
else
// Use text after match with 'include'.
new_fname = file_name_in_line(incl_regmatch.endp[0], 0,
FNAME_EXP|FNAME_INCL|FNAME_REL, 1L, p_fname, NULL);
already_searched = FALSE;
if (new_fname != NULL)
{
// Check whether we have already searched in this file
for (i = 0;; i++)
{
if (i == depth + 1)
i = old_files;
if (i == max_path_depth)
break;
if (fullpathcmp(new_fname, files[i].name, TRUE, TRUE)
& FPC_SAME)
{
if (type != CHECK_PATH
&& action == ACTION_SHOW_ALL
&& files[i].matched)
{
msg_putchar('\n'); // cursor below last one
if (!got_int) // don't display if 'q'
// typed at "--more--"
// message
{
msg_home_replace_hl(new_fname);
msg_puts(_(" (includes previously listed match)"));
prev_fname = NULL;
}
}
VIM_CLEAR(new_fname);
already_searched = TRUE;
break;
}
}
}
if (type == CHECK_PATH && (action == ACTION_SHOW_ALL
|| (new_fname == NULL && !already_searched)))
{
if (did_show)
msg_putchar('\n'); // cursor below last one
else
{
gotocmdline(TRUE); // cursor at status line
msg_puts_title(_("--- Included files "));
if (action != ACTION_SHOW_ALL)
msg_puts_title(_("not found "));
msg_puts_title(_("in path ---\n"));
}
did_show = TRUE;
while (depth_displayed < depth && !got_int)
{
++depth_displayed;
for (i = 0; i < depth_displayed; i++)
msg_puts(" ");
msg_home_replace(files[depth_displayed].name);
msg_puts(" -->\n");
}
if (!got_int) // don't display if 'q' typed
// for "--more--" message
{
for (i = 0; i <= depth_displayed; i++)
msg_puts(" ");
if (new_fname != NULL)
{
// using "new_fname" is more reliable, e.g., when
// 'includeexpr' is set.
msg_outtrans_attr(new_fname, HL_ATTR(HLF_D));
}
else
{
/*
* Isolate the file name.
* Include the surrounding "" or <> if present.
*/
if (inc_opt != NULL
&& strstr((char *)inc_opt, "\\zs") != NULL)
{
// pattern contains \zs, use the match
p = incl_regmatch.startp[0];
i = (int)(incl_regmatch.endp[0]
- incl_regmatch.startp[0]);
}
else
{
// find the file name after the end of the match
for (p = incl_regmatch.endp[0];
*p && !vim_isfilec(*p); p++)
;
for (i = 0; vim_isfilec(p[i]); i++)
;
}
if (i == 0)
{
// Nothing found, use the rest of the line.
p = incl_regmatch.endp[0];
i = (int)STRLEN(p);
}
// Avoid checking before the start of the line, can
// happen if \zs appears in the regexp.
else if (p > line)
{
if (p[-1] == '"' || p[-1] == '<')
{
--p;
++i;
}
if (p[i] == '"' || p[i] == '>')
++i;
}
save_char = p[i];
p[i] = NUL;
msg_outtrans_attr(p, HL_ATTR(HLF_D));
p[i] = save_char;
}
if (new_fname == NULL && action == ACTION_SHOW_ALL)
{
if (already_searched)
msg_puts(_(" (Already listed)"));
else
msg_puts(_(" NOT FOUND"));
}
}
out_flush(); // output each line directly
}
if (new_fname != NULL)
{
// Push the new file onto the file stack
if (depth + 1 == old_files)
{
bigger = ALLOC_MULT(SearchedFile, max_path_depth * 2);
if (bigger != NULL)
{
for (i = 0; i <= depth; i++)
bigger[i] = files[i];
for (i = depth + 1; i < old_files + max_path_depth; i++)
{
bigger[i].fp = NULL;
bigger[i].name = NULL;
bigger[i].lnum = 0;
bigger[i].matched = FALSE;
}
for (i = old_files; i < max_path_depth; i++)
bigger[i + max_path_depth] = files[i];
old_files += max_path_depth;
max_path_depth *= 2;
vim_free(files);
files = bigger;
}
}
if ((files[depth + 1].fp = mch_fopen((char *)new_fname, "r"))
== NULL)
vim_free(new_fname);
else
{
if (++depth == old_files)
{
/*
* lalloc() for 'bigger' must have failed above. We
* will forget one of our already visited files now.
*/
vim_free(files[old_files].name);
++old_files;
}
files[depth].name = curr_fname = new_fname;
files[depth].lnum = 0;
files[depth].matched = FALSE;
if (action == ACTION_EXPAND)
{
msg_hist_off = TRUE; // reset in msg_trunc_attr()
vim_snprintf((char*)IObuff, IOSIZE,
_("Scanning included file: %s"),
(char *)new_fname);
msg_trunc_attr((char *)IObuff, TRUE, HL_ATTR(HLF_R));
}
else if (p_verbose >= 5)
{
verbose_enter();
smsg(_("Searching included file %s"),
(char *)new_fname);
verbose_leave();
}
}
}
}
else
{
/*
* Check if the line is a define (type == FIND_DEFINE)
*/
p = line;
search_line:
define_matched = FALSE;
if (def_regmatch.regprog != NULL
&& vim_regexec(&def_regmatch, line, (colnr_T)0))
{
/*
* Pattern must be first identifier after 'define', so skip
* to that position before checking for match of pattern. Also
* don't let it match beyond the end of this identifier.
*/
p = def_regmatch.endp[0];
while (*p && !vim_iswordc(*p))
p++;
define_matched = TRUE;
}
/*
* Look for a match. Don't do this if we are looking for a
* define and this line didn't match define_prog above.
*/
if (def_regmatch.regprog == NULL || define_matched)
{
if (define_matched || compl_status_sol())
{
// compare the first "len" chars from "ptr"
startp = skipwhite(p);
if (p_ic)
matched = !MB_STRNICMP(startp, ptr, len);
else
matched = !STRNCMP(startp, ptr, len);
if (matched && define_matched && whole
&& vim_iswordc(startp[len]))
matched = FALSE;
}
else if (regmatch.regprog != NULL
&& vim_regexec(&regmatch, line, (colnr_T)(p - line)))
{
matched = TRUE;
startp = regmatch.startp[0];
/*
* Check if the line is not a comment line (unless we are
* looking for a define). A line starting with "# define"
* is not considered to be a comment line.
*/
if (!define_matched && skip_comments)
{
if ((*line != '#' ||
STRNCMP(skipwhite(line + 1), "define", 6) != 0)
&& get_leader_len(line, NULL, FALSE, TRUE))
matched = FALSE;
/*
* Also check for a "/ *" or "/ /" before the match.
* Skips lines like "int backwards; / * normal index
* * /" when looking for "normal".
* Note: Doesn't skip "/ *" in comments.
*/
p = skipwhite(line);
if (matched
|| (p[0] == '/' && p[1] == '*') || p[0] == '*')
for (p = line; *p && p < startp; ++p)
{
if (matched
&& p[0] == '/'
&& (p[1] == '*' || p[1] == '/'))
{
matched = FALSE;
// After "//" all text is comment
if (p[1] == '/')
break;
++p;
}
else if (!matched && p[0] == '*' && p[1] == '/')
{
// Can find match after "* /".
matched = TRUE;
++p;
}
}
}
}
}
}
if (matched)
{
if (action == ACTION_EXPAND)
{
int cont_s_ipos = FALSE;
int add_r;
char_u *aux;
if (depth == -1 && lnum == curwin->w_cursor.lnum)
break;
found = TRUE;
aux = p = startp;
if (compl_status_adding())
{
p += ins_compl_len();
if (vim_iswordp(p))
goto exit_matched;
p = find_word_start(p);
}
p = find_word_end(p);
i = (int)(p - aux);
if (compl_status_adding() && i == ins_compl_len())
{
// IOSIZE > compl_length, so the STRNCPY works
STRNCPY(IObuff, aux, i);
// Get the next line: when "depth" < 0 from the current
// buffer, otherwise from the included file. Jump to
// exit_matched when past the last line.
if (depth < 0)
{
if (lnum >= end_lnum)
goto exit_matched;
line = get_line_and_copy(++lnum, file_line);
}
else if (vim_fgets(line = file_line,
LSIZE, files[depth].fp))
goto exit_matched;
// we read a line, set "already" to check this "line" later
// if depth >= 0 we'll increase files[depth].lnum far
// below -- Acevedo
already = aux = p = skipwhite(line);
p = find_word_start(p);
p = find_word_end(p);
if (p > aux)
{
if (*aux != ')' && IObuff[i-1] != TAB)
{
if (IObuff[i-1] != ' ')
IObuff[i++] = ' ';
// IObuf =~ "\(\k\|\i\).* ", thus i >= 2
if (p_js
&& (IObuff[i-2] == '.'
|| (vim_strchr(p_cpo, CPO_JOINSP) == NULL
&& (IObuff[i-2] == '?'
|| IObuff[i-2] == '!'))))
IObuff[i++] = ' ';
}
// copy as much as possible of the new word
if (p - aux >= IOSIZE - i)
p = aux + IOSIZE - i - 1;
STRNCPY(IObuff + i, aux, p - aux);
i += (int)(p - aux);
cont_s_ipos = TRUE;
}
IObuff[i] = NUL;
aux = IObuff;
if (i == ins_compl_len())
goto exit_matched;
}
add_r = ins_compl_add_infercase(aux, i, p_ic,
curr_fname == curbuf->b_fname ? NULL : curr_fname,
dir, cont_s_ipos);
if (add_r == OK)
// if dir was BACKWARD then honor it just once
dir = FORWARD;
else if (add_r == FAIL)
break;
}
else if (action == ACTION_SHOW_ALL)
{
found = TRUE;
if (!did_show)
gotocmdline(TRUE); // cursor at status line
if (curr_fname != prev_fname)
{
if (did_show)
msg_putchar('\n'); // cursor below last one
if (!got_int) // don't display if 'q' typed
// at "--more--" message
msg_home_replace_hl(curr_fname);
prev_fname = curr_fname;
}
did_show = TRUE;
if (!got_int)
show_pat_in_path(line, type, TRUE, action,
(depth == -1) ? NULL : files[depth].fp,
(depth == -1) ? &lnum : &files[depth].lnum,
match_count++);
// Set matched flag for this file and all the ones that
// include it
for (i = 0; i <= depth; ++i)
files[i].matched = TRUE;
}
else if (--count <= 0)
{
found = TRUE;
if (depth == -1 && lnum == curwin->w_cursor.lnum
#if defined(FEAT_QUICKFIX)
&& g_do_tagpreview == 0
#endif
)
emsg(_(e_match_is_on_current_line));
else if (action == ACTION_SHOW)
{
show_pat_in_path(line, type, did_show, action,
(depth == -1) ? NULL : files[depth].fp,
(depth == -1) ? &lnum : &files[depth].lnum, 1L);
did_show = TRUE;
}
else
{
#ifdef FEAT_GUI
need_mouse_correct = TRUE;
#endif
#if defined(FEAT_QUICKFIX)
// ":psearch" uses the preview window
if (g_do_tagpreview != 0)
{
curwin_save = curwin;
prepare_tagpreview(TRUE, TRUE, FALSE);
}
#endif
if (action == ACTION_SPLIT)
{
if (win_split(0, 0) == FAIL)
break;
RESET_BINDING(curwin);
}
if (depth == -1)
{
// match in current file
#if defined(FEAT_QUICKFIX)
if (g_do_tagpreview != 0)
{
if (!win_valid(curwin_save))
break;
if (!GETFILE_SUCCESS(getfile(
curwin_save->w_buffer->b_fnum, NULL,
NULL, TRUE, lnum, forceit)))
break; // failed to jump to file
}
else
#endif
setpcmark();
curwin->w_cursor.lnum = lnum;
check_cursor();
}
else
{
if (!GETFILE_SUCCESS(getfile(
0, files[depth].name, NULL, TRUE,
files[depth].lnum, forceit)))
break; // failed to jump to file
// autocommands may have changed the lnum, we don't
// want that here
curwin->w_cursor.lnum = files[depth].lnum;
}
}
if (action != ACTION_SHOW)
{
curwin->w_cursor.col = (colnr_T)(startp - line);
curwin->w_set_curswant = TRUE;
}
#if defined(FEAT_QUICKFIX)
if (g_do_tagpreview != 0
&& curwin != curwin_save && win_valid(curwin_save))
{
// Return cursor to where we were
validate_cursor();
redraw_later(UPD_VALID);
win_enter(curwin_save, TRUE);
}
# ifdef FEAT_PROP_POPUP
else if (WIN_IS_POPUP(curwin))
// can't keep focus in popup window
win_enter(firstwin, TRUE);
# endif
#endif
break;
}
exit_matched:
matched = FALSE;
// look for other matches in the rest of the line if we
// are not at the end of it already
if (def_regmatch.regprog == NULL
&& action == ACTION_EXPAND
&& !compl_status_sol()
&& *startp != NUL
&& *(startp + mb_ptr2len(startp)) != NUL)
goto search_line;
}
line_breakcheck();
if (action == ACTION_EXPAND)
ins_compl_check_keys(30, FALSE);
if (got_int || ins_compl_interrupted())
break;
/*
* Read the next line. When reading an included file and encountering
* end-of-file, close the file and continue in the file that included
* it.
*/
while (depth >= 0 && !already
&& vim_fgets(line = file_line, LSIZE, files[depth].fp))
{
fclose(files[depth].fp);
--old_files;
files[old_files].name = files[depth].name;
files[old_files].matched = files[depth].matched;
--depth;
curr_fname = (depth == -1) ? curbuf->b_fname
: files[depth].name;
if (depth < depth_displayed)
depth_displayed = depth;
}
if (depth >= 0) // we could read the line
{
files[depth].lnum++;
// Remove any CR and LF from the line.
i = (int)STRLEN(line);
if (i > 0 && line[i - 1] == '\n')
line[--i] = NUL;
if (i > 0 && line[i - 1] == '\r')
line[--i] = NUL;
}
else if (!already)
{
if (++lnum > end_lnum)
break;
line = get_line_and_copy(lnum, file_line);
}
already = NULL;
}
// End of big for (;;) loop.
// Close any files that are still open.
for (i = 0; i <= depth; i++)
{
fclose(files[i].fp);
vim_free(files[i].name);
}
for (i = old_files; i < max_path_depth; i++)
vim_free(files[i].name);
vim_free(files);
if (type == CHECK_PATH)
{
if (!did_show)
{
if (action != ACTION_SHOW_ALL)
msg(_("All included files were found"));
else
msg(_("No included files"));
}
}
else if (!found && action != ACTION_EXPAND)
{
if (got_int || ins_compl_interrupted())
emsg(_(e_interrupted));
else if (type == FIND_DEFINE)
emsg(_(e_couldnt_find_definition));
else
emsg(_(e_couldnt_find_pattern));
}
if (action == ACTION_SHOW || action == ACTION_SHOW_ALL)
msg_end();
fpip_end:
vim_free(file_line);
vim_regfree(regmatch.regprog);
vim_regfree(incl_regmatch.regprog);
vim_regfree(def_regmatch.regprog);
}
static void
show_pat_in_path(
char_u *line,
int type,
int did_show,
int action,
FILE *fp,
linenr_T *lnum,
long count)
{
char_u *p;
size_t linelen;
if (did_show)
msg_putchar('\n'); // cursor below last one
else if (!msg_silent)
gotocmdline(TRUE); // cursor at status line
if (got_int) // 'q' typed at "--more--" message
return;
linelen = STRLEN(line);
for (;;)
{
p = line + linelen - 1;
if (fp != NULL)
{
// We used fgets(), so get rid of newline at end
if (p >= line && *p == '\n')
--p;
if (p >= line && *p == '\r')
--p;
*(p + 1) = NUL;
}
if (action == ACTION_SHOW_ALL)
{
sprintf((char *)IObuff, "%3ld: ", count); // show match nr
msg_puts((char *)IObuff);
sprintf((char *)IObuff, "%4ld", *lnum); // show line nr
// Highlight line numbers
msg_puts_attr((char *)IObuff, HL_ATTR(HLF_N));
msg_puts(" ");
}
msg_prt_line(line, FALSE);
out_flush(); // show one line at a time
// Definition continues until line that doesn't end with '\'
if (got_int || type != FIND_DEFINE || p < line || *p != '\\')
break;
if (fp != NULL)
{
if (vim_fgets(line, LSIZE, fp)) // end of file
break;
linelen = STRLEN(line);
++*lnum;
}
else
{
if (++*lnum > curbuf->b_ml.ml_line_count)
break;
line = ml_get(*lnum);
linelen = ml_get_len(*lnum);
}
msg_putchar('\n');
}
}
#endif
#ifdef FEAT_VIMINFO
/*
* Return the last used search pattern at "idx".
*/
spat_T *
get_spat(int idx)
{
return &spats[idx];
}
/*
* Return the last used search pattern index.
*/
int
get_spat_last_idx(void)
{
return last_idx;
}
#endif
#if defined(FEAT_EVAL) || defined(FEAT_PROTO)
/*
* "searchcount()" function
*/
void
f_searchcount(typval_T *argvars, typval_T *rettv)
{
pos_T pos = curwin->w_cursor;
char_u *pattern = NULL;
int maxcount = SEARCH_STAT_DEF_MAX_COUNT;
long timeout = SEARCH_STAT_DEF_TIMEOUT;
int recompute = TRUE;
searchstat_T stat;
if (rettv_dict_alloc(rettv) == FAIL)
return;
if (in_vim9script() && check_for_opt_dict_arg(argvars, 0) == FAIL)
return;
if (shortmess(SHM_SEARCHCOUNT)) // 'shortmess' contains 'S' flag
recompute = TRUE;
if (argvars[0].v_type != VAR_UNKNOWN)
{
dict_T *dict;
dictitem_T *di;
listitem_T *li;
int error = FALSE;
if (check_for_nonnull_dict_arg(argvars, 0) == FAIL)
return;
dict = argvars[0].vval.v_dict;
di = dict_find(dict, (char_u *)"timeout", -1);
if (di != NULL)
{
timeout = (long)tv_get_number_chk(&di->di_tv, &error);
if (error)
return;
}
di = dict_find(dict, (char_u *)"maxcount", -1);
if (di != NULL)
{
maxcount = (int)tv_get_number_chk(&di->di_tv, &error);
if (error)
return;
}
recompute = dict_get_bool(dict, "recompute", recompute);
di = dict_find(dict, (char_u *)"pattern", -1);
if (di != NULL)
{
pattern = tv_get_string_chk(&di->di_tv);
if (pattern == NULL)
return;
}
di = dict_find(dict, (char_u *)"pos", -1);
if (di != NULL)
{
if (di->di_tv.v_type != VAR_LIST)
{
semsg(_(e_invalid_argument_str), "pos");
return;
}
if (list_len(di->di_tv.vval.v_list) != 3)
{
semsg(_(e_invalid_argument_str), "List format should be [lnum, col, off]");
return;
}
li = list_find(di->di_tv.vval.v_list, 0L);
if (li != NULL)
{
pos.lnum = tv_get_number_chk(&li->li_tv, &error);
if (error)
return;
}
li = list_find(di->di_tv.vval.v_list, 1L);
if (li != NULL)
{
pos.col = tv_get_number_chk(&li->li_tv, &error) - 1;
if (error)
return;
}
li = list_find(di->di_tv.vval.v_list, 2L);
if (li != NULL)
{
pos.coladd = tv_get_number_chk(&li->li_tv, &error);
if (error)
return;
}
}
}
save_last_search_pattern();
#ifdef FEAT_SEARCH_EXTRA
save_incsearch_state();
#endif
if (pattern != NULL)
{
if (*pattern == NUL)
goto the_end;
vim_free(spats[last_idx].pat);
spats[last_idx].patlen = STRLEN(pattern);
spats[last_idx].pat = vim_strnsave(pattern, spats[last_idx].patlen);
if (spats[last_idx].pat == NULL)
spats[last_idx].patlen = 0;
}
if (spats[last_idx].pat == NULL || *spats[last_idx].pat == NUL)
goto the_end; // the previous pattern was never defined
update_search_stat(0, &pos, &pos, &stat, recompute, maxcount, timeout);
dict_add_number(rettv->vval.v_dict, "current", stat.cur);
dict_add_number(rettv->vval.v_dict, "total", stat.cnt);
dict_add_number(rettv->vval.v_dict, "exact_match", stat.exact_match);
dict_add_number(rettv->vval.v_dict, "incomplete", stat.incomplete);
dict_add_number(rettv->vval.v_dict, "maxcount", stat.last_maxcount);
the_end:
restore_last_search_pattern();
#ifdef FEAT_SEARCH_EXTRA
restore_incsearch_state();
#endif
}
#endif
/*
* Fuzzy string matching
*
* Ported from the lib_fts library authored by Forrest Smith.
* https://github.com/forrestthewoods/lib_fts/tree/master/code
*
* The following blog describes the fuzzy matching algorithm:
* https://www.forrestthewoods.com/blog/reverse_engineering_sublime_texts_fuzzy_match/
*
* Each matching string is assigned a score. The following factors are checked:
* - Matched letter
* - Unmatched letter
* - Consecutively matched letters
* - Proximity to start
* - Letter following a separator (space, underscore)
* - Uppercase letter following lowercase (aka CamelCase)
*
* Matched letters are good. Unmatched letters are bad. Matching near the start
* is good. Matching the first letter in the middle of a phrase is good.
* Matching the uppercase letters in camel case entries is good.
*
* The score assigned for each factor is explained below.
* File paths are different from file names. File extensions may be ignorable.
* Single words care about consecutive matches but not separators or camel
* case.
* Score starts at 100
* Matched letter: +0 points
* Unmatched letter: -1 point
* Consecutive match bonus: +15 points
* First letter bonus: +15 points
* Separator bonus: +30 points
* Camel case bonus: +30 points
* Unmatched leading letter: -5 points (max: -15)
*
* There is some nuance to this. Scores don’t have an intrinsic meaning. The
* score range isn’t 0 to 100. It’s roughly [50, 150]. Longer words have a
* lower minimum score due to unmatched letter penalty. Longer search patterns
* have a higher maximum score due to match bonuses.
*
* Separator and camel case bonus is worth a LOT. Consecutive matches are worth
* quite a bit.
*
* There is a penalty if you DON’T match the first three letters. Which
* effectively rewards matching near the start. However there’s no difference
* in matching between the middle and end.
*
* There is not an explicit bonus for an exact match. Unmatched letters receive
* a penalty. So shorter strings and closer matches are worth more.
*/
typedef struct
{
int idx; // used for stable sort
listitem_T *item;
int score;
list_T *lmatchpos;
} fuzzyItem_T;
// bonus for adjacent matches; this is higher than SEPARATOR_BONUS so that
// matching a whole word is preferred.
#define SEQUENTIAL_BONUS 40
// bonus if match occurs after a path separator
#define PATH_SEPARATOR_BONUS 30
// bonus if match occurs after a word separator
#define WORD_SEPARATOR_BONUS 25
// bonus if match is uppercase and prev is lower
#define CAMEL_BONUS 30
// bonus if the first letter is matched
#define FIRST_LETTER_BONUS 15
// penalty applied for every letter in str before the first match
#define LEADING_LETTER_PENALTY (-5)
// maximum penalty for leading letters
#define MAX_LEADING_LETTER_PENALTY (-15)
// penalty for every letter that doesn't match
#define UNMATCHED_LETTER_PENALTY (-1)
// penalty for gap in matching positions (-2 * k)
#define GAP_PENALTY (-2)
// Score for a string that doesn't fuzzy match the pattern
#define SCORE_NONE (-9999)
#define FUZZY_MATCH_RECURSION_LIMIT 10
/*
* Compute a score for a fuzzy matched string. The matching character locations
* are in 'matches'.
*/
static int
fuzzy_match_compute_score(
char_u *str,
int strSz,
int_u *matches,
int numMatches)
{
int score;
int penalty;
int unmatched;
int i;
char_u *p = str;
int_u sidx = 0;
int is_exact_match = TRUE;
// Initialize score
score = 100;
// Apply leading letter penalty
penalty = LEADING_LETTER_PENALTY * matches[0];
if (penalty < MAX_LEADING_LETTER_PENALTY)
penalty = MAX_LEADING_LETTER_PENALTY;
score += penalty;
// Apply unmatched penalty
unmatched = strSz - numMatches;
score += UNMATCHED_LETTER_PENALTY * unmatched;
// Apply ordering bonuses
for (i = 0; i < numMatches; ++i)
{
int_u currIdx = matches[i];
if (i > 0)
{
int_u prevIdx = matches[i - 1];
// Sequential
if (currIdx == (prevIdx + 1))
score += SEQUENTIAL_BONUS;
else
score += GAP_PENALTY * (currIdx - prevIdx);
}
// Check for bonuses based on neighbor character value
if (currIdx > 0)
{
// Camel case
int neighbor = ' ';
int curr;
if (has_mbyte)
{
while (sidx < currIdx)
{
neighbor = (*mb_ptr2char)(p);
MB_PTR_ADV(p);
sidx++;
}
curr = (*mb_ptr2char)(p);
}
else
{
neighbor = str[currIdx - 1];
curr = str[currIdx];
}
if (vim_islower(neighbor) && vim_isupper(curr))
score += CAMEL_BONUS;
// Bonus if the match follows a separator character
if (neighbor == '/' || neighbor == '\\')
score += PATH_SEPARATOR_BONUS;
else if (neighbor == ' ' || neighbor == '_')
score += WORD_SEPARATOR_BONUS;
}
else
{
// First letter
score += FIRST_LETTER_BONUS;
}
// Check exact match condition
if (currIdx != (int_u)i)
is_exact_match = FALSE;
}
// Boost score for exact matches
if (is_exact_match && numMatches == strSz)
score += 100;
return score;
}
/*
* Perform a recursive search for fuzzy matching 'fuzpat' in 'str'.
* Return the number of matching characters.
*/
static int
fuzzy_match_recursive(
char_u *fuzpat,
char_u *str,
int_u strIdx,
int *outScore,
char_u *strBegin,
int strLen,
int_u *srcMatches,
int_u *matches,
int maxMatches,
int nextMatch,
int *recursionCount)
{
// Recursion params
int recursiveMatch = FALSE;
int_u bestRecursiveMatches[MAX_FUZZY_MATCHES];
int bestRecursiveScore = 0;
int first_match;
int matched;
// Count recursions
++*recursionCount;
if (*recursionCount >= FUZZY_MATCH_RECURSION_LIMIT)
return 0;
// Detect end of strings
if (*fuzpat == NUL || *str == NUL)
return 0;
// Loop through fuzpat and str looking for a match
first_match = TRUE;
while (*fuzpat != NUL && *str != NUL)
{
int c1;
int c2;
c1 = PTR2CHAR(fuzpat);
c2 = PTR2CHAR(str);
// Found match
if (vim_tolower(c1) == vim_tolower(c2))
{
// Supplied matches buffer was too short
if (nextMatch >= maxMatches)
return 0;
int recursiveScore = 0;
int_u recursiveMatches[MAX_FUZZY_MATCHES];
CLEAR_FIELD(recursiveMatches);
// "Copy-on-Write" srcMatches into matches
if (first_match && srcMatches)
{
memcpy(matches, srcMatches, nextMatch * sizeof(srcMatches[0]));
first_match = FALSE;
}
// Recursive call that "skips" this match
char_u *next_char = str + (has_mbyte ? (*mb_ptr2len)(str) : 1);
if (fuzzy_match_recursive(fuzpat, next_char, strIdx + 1,
&recursiveScore, strBegin, strLen, matches,
recursiveMatches,
ARRAY_LENGTH(recursiveMatches),
nextMatch, recursionCount))
{
// Pick best recursive score
if (!recursiveMatch || recursiveScore > bestRecursiveScore)
{
memcpy(bestRecursiveMatches, recursiveMatches,
MAX_FUZZY_MATCHES * sizeof(recursiveMatches[0]));
bestRecursiveScore = recursiveScore;
}
recursiveMatch = TRUE;
}
// Advance
matches[nextMatch++] = strIdx;
if (has_mbyte)
MB_PTR_ADV(fuzpat);
else
++fuzpat;
}
if (has_mbyte)
MB_PTR_ADV(str);
else
++str;
strIdx++;
}
// Determine if full fuzpat was matched
matched = *fuzpat == NUL ? TRUE : FALSE;
// Calculate score
if (matched)
*outScore = fuzzy_match_compute_score(strBegin, strLen, matches,
nextMatch);
// Return best result
if (recursiveMatch && (!matched || bestRecursiveScore > *outScore))
{
// Recursive score is better than "this"
memcpy(matches, bestRecursiveMatches, maxMatches * sizeof(matches[0]));
*outScore = bestRecursiveScore;
return nextMatch;
}
else if (matched)
return nextMatch; // "this" score is better than recursive
return 0; // no match
}
/*
* fuzzy_match()
*
* Performs exhaustive search via recursion to find all possible matches and
* match with highest score.
* Scores values have no intrinsic meaning. Possible score range is not
* normalized and varies with pattern.
* Recursion is limited internally (default=10) to prevent degenerate cases
* (pat_arg="aaaaaa" str="aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa").
* Uses char_u for match indices. Therefore patterns are limited to
* MAX_FUZZY_MATCHES characters.
*
* Returns TRUE if "pat_arg" matches "str". Also returns the match score in
* "outScore" and the matching character positions in "matches".
*/
int
fuzzy_match(
char_u *str,
char_u *pat_arg,
int matchseq,
int *outScore,
int_u *matches,
int maxMatches)
{
int recursionCount = 0;
int len = MB_CHARLEN(str);
char_u *save_pat;
char_u *pat;
char_u *p;
int complete = FALSE;
int score = 0;
int numMatches = 0;
int matchCount;
*outScore = 0;
save_pat = vim_strsave(pat_arg);
if (save_pat == NULL)
return FALSE;
pat = save_pat;
p = pat;
// Try matching each word in 'pat_arg' in 'str'
while (TRUE)
{
if (matchseq)
complete = TRUE;
else
{
// Extract one word from the pattern (separated by space)
p = skipwhite(p);
if (*p == NUL)
break;
pat = p;
while (*p != NUL && !VIM_ISWHITE(PTR2CHAR(p)))
{
if (has_mbyte)
MB_PTR_ADV(p);
else
++p;
}
if (*p == NUL) // processed all the words
complete = TRUE;
*p = NUL;
}
score = 0;
recursionCount = 0;
matchCount = fuzzy_match_recursive(pat, str, 0, &score, str, len, NULL,
matches + numMatches, maxMatches - numMatches,
0, &recursionCount);
if (matchCount == 0)
{
numMatches = 0;
break;
}
// Accumulate the match score and the number of matches
*outScore += score;
numMatches += matchCount;
if (complete)
break;
// try matching the next word
++p;
}
vim_free(save_pat);
return numMatches != 0;
}
#if defined(FEAT_EVAL) || defined(FEAT_PROTO)
/*
* Sort the fuzzy matches in the descending order of the match score.
* For items with same score, retain the order using the index (stable sort)
*/
static int
fuzzy_match_item_compare(const void *s1, const void *s2)
{
int v1 = ((fuzzyItem_T *)s1)->score;
int v2 = ((fuzzyItem_T *)s2)->score;
int idx1 = ((fuzzyItem_T *)s1)->idx;
int idx2 = ((fuzzyItem_T *)s2)->idx;
if (v1 == v2)
return idx1 == idx2 ? 0 : idx1 > idx2 ? 1 : -1;
else
return v1 > v2 ? -1 : 1;
}
/*
* Fuzzy search the string 'str' in a list of 'items' and return the matching
* strings in 'fmatchlist'.
* If 'matchseq' is TRUE, then for multi-word search strings, match all the
* words in sequence.
* If 'items' is a list of strings, then search for 'str' in the list.
* If 'items' is a list of dicts, then either use 'key' to lookup the string
* for each item or use 'item_cb' Funcref function to get the string.
* If 'retmatchpos' is TRUE, then return a list of positions where 'str'
* matches for each item.
*/
static void
fuzzy_match_in_list(
list_T *l,
char_u *str,
int matchseq,
char_u *key,
callback_T *item_cb,
int retmatchpos,
list_T *fmatchlist,
long max_matches)
{
long len;
fuzzyItem_T *items;
listitem_T *li;
long i = 0;
long match_count = 0;
int_u matches[MAX_FUZZY_MATCHES];
len = list_len(l);
if (len == 0)
return;
if (max_matches > 0 && len > max_matches)
len = max_matches;
items = ALLOC_CLEAR_MULT(fuzzyItem_T, len);
if (items == NULL)
return;
// For all the string items in items, get the fuzzy matching score
FOR_ALL_LIST_ITEMS(l, li)
{
int score;
char_u *itemstr;
typval_T rettv;
if (max_matches > 0 && match_count >= max_matches)
break;
itemstr = NULL;
rettv.v_type = VAR_UNKNOWN;
if (li->li_tv.v_type == VAR_STRING) // list of strings
itemstr = li->li_tv.vval.v_string;
else if (li->li_tv.v_type == VAR_DICT
&& (key != NULL || item_cb->cb_name != NULL))
{
// For a dict, either use the specified key to lookup the string or
// use the specified callback function to get the string.
if (key != NULL)
itemstr = dict_get_string(li->li_tv.vval.v_dict,
(char *)key, FALSE);
else
{
typval_T argv[2];
// Invoke the supplied callback (if any) to get the dict item
li->li_tv.vval.v_dict->dv_refcount++;
argv[0].v_type = VAR_DICT;
argv[0].vval.v_dict = li->li_tv.vval.v_dict;
argv[1].v_type = VAR_UNKNOWN;
if (call_callback(item_cb, -1, &rettv, 1, argv) != FAIL)
{
if (rettv.v_type == VAR_STRING)
itemstr = rettv.vval.v_string;
}
dict_unref(li->li_tv.vval.v_dict);
}
}
if (itemstr != NULL
&& fuzzy_match(itemstr, str, matchseq, &score, matches,
MAX_FUZZY_MATCHES))
{
items[match_count].idx = match_count;
items[match_count].item = li;
items[match_count].score = score;
// Copy the list of matching positions in itemstr to a list, if
// 'retmatchpos' is set.
if (retmatchpos)
{
int j = 0;
char_u *p;
items[match_count].lmatchpos = list_alloc();
if (items[match_count].lmatchpos == NULL)
goto done;
p = str;
while (*p != NUL)
{
if (!VIM_ISWHITE(PTR2CHAR(p)) || matchseq)
{
if (list_append_number(items[match_count].lmatchpos,
matches[j]) == FAIL)
goto done;
j++;
}
if (has_mbyte)
MB_PTR_ADV(p);
else
++p;
}
}
++match_count;
}
clear_tv(&rettv);
}
if (match_count > 0)
{
list_T *retlist;
// Sort the list by the descending order of the match score
qsort((void *)items, (size_t)match_count, sizeof(fuzzyItem_T),
fuzzy_match_item_compare);
// For matchfuzzy(), return a list of matched strings.
// ['str1', 'str2', 'str3']
// For matchfuzzypos(), return a list with three items.
// The first item is a list of matched strings. The second item
// is a list of lists where each list item is a list of matched
// character positions. The third item is a list of matching scores.
// [['str1', 'str2', 'str3'], [[1, 3], [1, 3], [1, 3]]]
if (retmatchpos)
{
li = list_find(fmatchlist, 0);
if (li == NULL || li->li_tv.vval.v_list == NULL)
goto done;
retlist = li->li_tv.vval.v_list;
}
else
retlist = fmatchlist;
// Copy the matching strings with a valid score to the return list
for (i = 0; i < match_count; i++)
{
if (items[i].score == SCORE_NONE)
break;
list_append_tv(retlist, &items[i].item->li_tv);
}
// next copy the list of matching positions
if (retmatchpos)
{
li = list_find(fmatchlist, -2);
if (li == NULL || li->li_tv.vval.v_list == NULL)
goto done;
retlist = li->li_tv.vval.v_list;
for (i = 0; i < match_count; i++)
{
if (items[i].score == SCORE_NONE)
break;
if (items[i].lmatchpos != NULL
&& list_append_list(retlist, items[i].lmatchpos) == FAIL)
goto done;
}
// copy the matching scores
li = list_find(fmatchlist, -1);
if (li == NULL || li->li_tv.vval.v_list == NULL)
goto done;
retlist = li->li_tv.vval.v_list;
for (i = 0; i < match_count; i++)
{
if (items[i].score == SCORE_NONE)
break;
if (list_append_number(retlist, items[i].score) == FAIL)
goto done;
}
}
}
done:
vim_free(items);
}
/*
* Do fuzzy matching. Returns the list of matched strings in 'rettv'.
* If 'retmatchpos' is TRUE, also returns the matching character positions.
*/
static void
do_fuzzymatch(typval_T *argvars, typval_T *rettv, int retmatchpos)
{
callback_T cb;
char_u *key = NULL;
int ret;
int matchseq = FALSE;
long max_matches = 0;
if (in_vim9script()
&& (check_for_list_arg(argvars, 0) == FAIL
|| check_for_string_arg(argvars, 1) == FAIL
|| check_for_opt_dict_arg(argvars, 2) == FAIL))
return;
CLEAR_POINTER(&cb);
// validate and get the arguments
if (argvars[0].v_type != VAR_LIST || argvars[0].vval.v_list == NULL)
{
semsg(_(e_argument_of_str_must_be_list),
retmatchpos ? "matchfuzzypos()" : "matchfuzzy()");
return;
}
if (argvars[1].v_type != VAR_STRING
|| argvars[1].vval.v_string == NULL)
{
semsg(_(e_invalid_argument_str), tv_get_string(&argvars[1]));
return;
}
if (argvars[2].v_type != VAR_UNKNOWN)
{
dict_T *d;
dictitem_T *di;
if (check_for_nonnull_dict_arg(argvars, 2) == FAIL)
return;
// To search a dict, either a callback function or a key can be
// specified.
d = argvars[2].vval.v_dict;
if ((di = dict_find(d, (char_u *)"key", -1)) != NULL)
{
if (di->di_tv.v_type != VAR_STRING
|| di->di_tv.vval.v_string == NULL
|| *di->di_tv.vval.v_string == NUL)
{
semsg(_(e_invalid_argument_str), tv_get_string(&di->di_tv));
return;
}
key = tv_get_string(&di->di_tv);
}
else if ((di = dict_find(d, (char_u *)"text_cb", -1)) != NULL)
{
cb = get_callback(&di->di_tv);
if (cb.cb_name == NULL)
{
semsg(_(e_invalid_value_for_argument_str), "text_cb");
return;
}
}
if ((di = dict_find(d, (char_u *)"limit", -1)) != NULL)
{
if (di->di_tv.v_type != VAR_NUMBER)
{
semsg(_(e_invalid_argument_str), tv_get_string(&di->di_tv));
return;
}
max_matches = (long)tv_get_number_chk(&di->di_tv, NULL);
}
if (dict_has_key(d, "matchseq"))
matchseq = TRUE;
}
// get the fuzzy matches
ret = rettv_list_alloc(rettv);
if (ret == FAIL)
goto done;
if (retmatchpos)
{
list_T *l;
// For matchfuzzypos(), a list with three items are returned. First
// item is a list of matching strings, the second item is a list of
// lists with matching positions within each string and the third item
// is the list of scores of the matches.
l = list_alloc();
if (l == NULL)
goto done;
if (list_append_list(rettv->vval.v_list, l) == FAIL)
{
vim_free(l);
goto done;
}
l = list_alloc();
if (l == NULL)
goto done;
if (list_append_list(rettv->vval.v_list, l) == FAIL)
{
vim_free(l);
goto done;
}
l = list_alloc();
if (l == NULL)
goto done;
if (list_append_list(rettv->vval.v_list, l) == FAIL)
{
vim_free(l);
goto done;
}
}
fuzzy_match_in_list(argvars[0].vval.v_list, tv_get_string(&argvars[1]),
matchseq, key, &cb, retmatchpos, rettv->vval.v_list, max_matches);
done:
free_callback(&cb);
}
/*
* "matchfuzzy()" function
*/
void
f_matchfuzzy(typval_T *argvars, typval_T *rettv)
{
do_fuzzymatch(argvars, rettv, FALSE);
}
/*
* "matchfuzzypos()" function
*/
void
f_matchfuzzypos(typval_T *argvars, typval_T *rettv)
{
do_fuzzymatch(argvars, rettv, TRUE);
}
#endif
/*
* Same as fuzzy_match_item_compare() except for use with a string match
*/
static int
fuzzy_match_str_compare(const void *s1, const void *s2)
{
int v1 = ((fuzmatch_str_T *)s1)->score;
int v2 = ((fuzmatch_str_T *)s2)->score;
int idx1 = ((fuzmatch_str_T *)s1)->idx;
int idx2 = ((fuzmatch_str_T *)s2)->idx;
if (v1 == v2)
return idx1 == idx2 ? 0 : idx1 > idx2 ? 1 : -1;
else
return v1 > v2 ? -1 : 1;
}
/*
* Sort fuzzy matches by score
*/
static void
fuzzy_match_str_sort(fuzmatch_str_T *fm, int sz)
{
// Sort the list by the descending order of the match score
qsort((void *)fm, (size_t)sz, sizeof(fuzmatch_str_T),
fuzzy_match_str_compare);
}
/*
* Same as fuzzy_match_item_compare() except for use with a function name
* string match. <SNR> functions should be sorted to the end.
*/
static int
fuzzy_match_func_compare(const void *s1, const void *s2)
{
int v1 = ((fuzmatch_str_T *)s1)->score;
int v2 = ((fuzmatch_str_T *)s2)->score;
int idx1 = ((fuzmatch_str_T *)s1)->idx;
int idx2 = ((fuzmatch_str_T *)s2)->idx;
char_u *str1 = ((fuzmatch_str_T *)s1)->str;
char_u *str2 = ((fuzmatch_str_T *)s2)->str;
if (*str1 != '<' && *str2 == '<')
return -1;
if (*str1 == '<' && *str2 != '<')
return 1;
if (v1 == v2)
return idx1 == idx2 ? 0 : idx1 > idx2 ? 1 : -1;
else
return v1 > v2 ? -1 : 1;
}
/*
* Sort fuzzy matches of function names by score.
* <SNR> functions should be sorted to the end.
*/
static void
fuzzy_match_func_sort(fuzmatch_str_T *fm, int sz)
{
// Sort the list by the descending order of the match score
qsort((void *)fm, (size_t)sz, sizeof(fuzmatch_str_T),
fuzzy_match_func_compare);
}
/*
* Fuzzy match 'pat' in 'str'. Returns 0 if there is no match. Otherwise,
* returns the match score.
*/
int
fuzzy_match_str(char_u *str, char_u *pat)
{
int score = 0;
int_u matchpos[MAX_FUZZY_MATCHES];
if (str == NULL || pat == NULL)
return 0;
fuzzy_match(str, pat, TRUE, &score, matchpos,
sizeof(matchpos) / sizeof(matchpos[0]));
return score;
}
/*
* Fuzzy match the position of string 'pat' in string 'str'.
* Returns a dynamic array of matching positions. If there is no match,
* returns NULL.
*/
garray_T *
fuzzy_match_str_with_pos(char_u *str UNUSED, char_u *pat UNUSED)
{
#ifdef FEAT_SEARCH_EXTRA
int score = 0;
garray_T *match_positions = NULL;
int_u matches[MAX_FUZZY_MATCHES];
int j = 0;
if (str == NULL || pat == NULL)
return NULL;
match_positions = ALLOC_ONE(garray_T);
if (match_positions == NULL)
return NULL;
ga_init2(match_positions, sizeof(int_u), 10);
if (!fuzzy_match(str, pat, FALSE, &score, matches, MAX_FUZZY_MATCHES)
|| score == 0)
{
ga_clear(match_positions);
vim_free(match_positions);
return NULL;
}
for (char_u *p = pat; *p != NUL; MB_PTR_ADV(p))
{
if (!VIM_ISWHITE(PTR2CHAR(p)))
{
ga_grow(match_positions, 1);
((int_u *)match_positions->ga_data)[match_positions->ga_len] =
matches[j];
match_positions->ga_len++;
j++;
}
}
return match_positions;
#else
return NULL;
#endif
}
/*
* This function searches for a fuzzy match of the pattern `pat` within the
* line pointed to by `*ptr`. It splits the line into words, performs fuzzy
* matching on each word, and returns the length and position of the first
* matched word.
*/
static int
fuzzy_match_str_in_line(char_u **ptr, char_u *pat, int *len, pos_T *current_pos)
{
char_u *str = *ptr;
char_u *strBegin = str;
char_u *end = NULL;
char_u *start = NULL;
int found = FALSE;
int result;
char save_end;
if (str == NULL || pat == NULL)
return found;
while (*str != NUL)
{
// Skip non-word characters
start = find_word_start(str);
if (*start == NUL)
break;
end = find_word_end(start);
// Extract the word from start to end
save_end = *end;
*end = NUL;
// Perform fuzzy match
result = fuzzy_match_str(start, pat);
*end = save_end;
if (result > 0)
{
*len = (int)(end - start);
current_pos->col += (int)(end - strBegin);
found = TRUE;
*ptr = start;
break;
}
// Move to the end of the current word for the next iteration
str = end;
// Ensure we continue searching after the current word
while (*str != NUL && !vim_iswordp(str))
MB_PTR_ADV(str);
}
return found;
}
/*
* Search for the next fuzzy match in the specified buffer.
* This function attempts to find the next occurrence of the given pattern
* in the buffer, starting from the current position. It handles line wrapping
* and direction of search.
*
* Return TRUE if a match is found, otherwise FALSE.
*/
int
search_for_fuzzy_match(
buf_T *buf,
pos_T *pos,
char_u *pattern,
int dir,
pos_T *start_pos,
int *len,
char_u **ptr,
int whole_line)
{
pos_T current_pos = *pos;
pos_T circly_end;
int found_new_match = FALSE;
int looped_around = FALSE;
char_u *next_word_end = NULL;
char_u *match_word = NULL;
if (whole_line)
current_pos.lnum += dir;
if (buf == curbuf)
circly_end = *start_pos;
else
{
circly_end.lnum = buf->b_ml.ml_line_count;
circly_end.col = 0;
circly_end.coladd = 0;
}
do {
// Check if looped around and back to start position
if (looped_around && EQUAL_POS(current_pos, circly_end))
break;
// Ensure current_pos is valid
if (current_pos.lnum >= 1 && current_pos.lnum <= buf->b_ml.ml_line_count)
{
// Get the current line buffer
*ptr = ml_get_buf(buf, current_pos.lnum, FALSE);
// If ptr is end of line is reached, move to next line
// or previous line based on direction
if (**ptr != NUL)
{
if (!whole_line)
{
*ptr += current_pos.col;
// Try to find a fuzzy match in the current line starting from current position
found_new_match = fuzzy_match_str_in_line(ptr, pattern, len, &current_pos);
if (found_new_match)
{
if (ctrl_x_mode_normal())
{
match_word = vim_strnsave(*ptr, *len);
if (STRCMP(match_word, pattern) == 0)
{
next_word_end = find_word_start(*ptr + *len);
if (*next_word_end != NUL && *next_word_end != NL)
{
// Find end of the word.
if (has_mbyte)
while (*next_word_end != NUL)
{
int l = (*mb_ptr2len)(next_word_end);
if (l < 2 && !vim_iswordc(*next_word_end))
break;
next_word_end += l;
}
else
next_word_end = find_word_end(next_word_end);
}
else if (looped_around)
found_new_match = FALSE;
*len = next_word_end - *ptr;
current_pos.col = *len;
}
vim_free(match_word);
}
*pos = current_pos;
break;
}
else if (looped_around && current_pos.lnum == circly_end.lnum)
break;
}
else
{
if (fuzzy_match_str(*ptr, pattern) > 0)
{
found_new_match = TRUE;
*pos = current_pos;
*len = (int)STRLEN(*ptr);
break;
}
}
}
}
// Move to the next line or previous line based on direction
if (dir == FORWARD)
{
if (++current_pos.lnum > buf->b_ml.ml_line_count)
{
if (p_ws)
{
current_pos.lnum = 1;
looped_around = TRUE;
}
else
break;
}
}
else
{
if (--current_pos.lnum < 1)
{
if (p_ws)
{
current_pos.lnum = buf->b_ml.ml_line_count;
looped_around = TRUE;
}
else
break;
}
}
current_pos.col = 0;
} while (TRUE);
return found_new_match;
}
/*
* Free an array of fuzzy string matches "fuzmatch[count]".
*/
void
fuzmatch_str_free(fuzmatch_str_T *fuzmatch, int count)
{
int i;
if (fuzmatch == NULL)
return;
for (i = 0; i < count; ++i)
vim_free(fuzmatch[i].str);
vim_free(fuzmatch);
}
/*
* Copy a list of fuzzy matches into a string list after sorting the matches by
* the fuzzy score. Frees the memory allocated for 'fuzmatch'.
* Returns OK on success and FAIL on memory allocation failure.
*/
int
fuzzymatches_to_strmatches(
fuzmatch_str_T *fuzmatch,
char_u ***matches,
int count,
int funcsort)
{
int i;
if (count <= 0)
return OK;
*matches = ALLOC_MULT(char_u *, count);
if (*matches == NULL)
{
fuzmatch_str_free(fuzmatch, count);
return FAIL;
}
// Sort the list by the descending order of the match score
if (funcsort)
fuzzy_match_func_sort((void *)fuzmatch, (size_t)count);
else
fuzzy_match_str_sort((void *)fuzmatch, (size_t)count);
for (i = 0; i < count; i++)
(*matches)[i] = fuzmatch[i].str;
vim_free(fuzmatch);
return OK;
}