6 * Finds which of the given pathspecs match items in the index.
8 * For each pathspec, sets the corresponding entry in the seen[] array
9 * (which should be specs items long, i.e. the same size as pathspec)
10 * to the nature of the "closest" (i.e. most specific) match found for
11 * that pathspec in the index, if it was a closer type of match than
12 * the existing entry. As an optimization, matching is skipped
13 * altogether if seen[] already only contains non-zero entries.
15 * If seen[] has not already been written to, it may make sense
16 * to use find_pathspecs_matching_against_index() instead.
18 void add_pathspec_matches_against_index(const struct pathspec *pathspec,
21 int num_unmatched = 0, i;
24 * Since we are walking the index as if we were walking the directory,
25 * we have to mark the matched pathspec as seen; otherwise we will
26 * mistakenly think that the user gave a pathspec that did not match
29 for (i = 0; i < pathspec->nr; i++)
34 for (i = 0; i < active_nr; i++) {
35 const struct cache_entry *ce = active_cache[i];
36 ce_path_match(ce, pathspec, seen);
41 * Finds which of the given pathspecs match items in the index.
43 * This is a one-shot wrapper around add_pathspec_matches_against_index()
44 * which allocates, populates, and returns a seen[] array indicating the
45 * nature of the "closest" (i.e. most specific) matches which each of the
46 * given pathspecs achieves against all items in the index.
48 char *find_pathspecs_matching_against_index(const struct pathspec *pathspec)
50 char *seen = xcalloc(pathspec->nr, 1);
51 add_pathspec_matches_against_index(pathspec, seen);
58 * Possible future magic semantics include stuff like:
60 * { PATHSPEC_RECURSIVE, '*', "recursive" },
61 * { PATHSPEC_REGEXP, '\0', "regexp" },
65 static struct pathspec_magic {
67 char mnemonic; /* this cannot be ':'! */
69 } pathspec_magic[] = {
70 { PATHSPEC_FROMTOP, '/', "top" },
71 { PATHSPEC_LITERAL, '\0', "literal" },
72 { PATHSPEC_GLOB, '\0', "glob" },
73 { PATHSPEC_ICASE, '\0', "icase" },
74 { PATHSPEC_EXCLUDE, '!', "exclude" },
77 static void prefix_magic(struct strbuf *sb, int prefixlen, unsigned magic)
80 strbuf_addstr(sb, ":(");
81 for (i = 0; i < ARRAY_SIZE(pathspec_magic); i++)
82 if (magic & pathspec_magic[i].bit) {
83 if (sb->buf[sb->len - 1] != '(')
84 strbuf_addch(sb, ',');
85 strbuf_addstr(sb, pathspec_magic[i].name);
87 strbuf_addf(sb, ",prefix:%d)", prefixlen);
90 static inline int get_literal_global(void)
92 static int literal = -1;
95 literal = git_env_bool(GIT_LITERAL_PATHSPECS_ENVIRONMENT, 0);
100 static inline int get_glob_global(void)
102 static int glob = -1;
105 glob = git_env_bool(GIT_GLOB_PATHSPECS_ENVIRONMENT, 0);
110 static inline int get_noglob_global(void)
112 static int noglob = -1;
115 noglob = git_env_bool(GIT_NOGLOB_PATHSPECS_ENVIRONMENT, 0);
120 static inline int get_icase_global(void)
122 static int icase = -1;
125 icase = git_env_bool(GIT_ICASE_PATHSPECS_ENVIRONMENT, 0);
130 static int get_global_magic(int element_magic)
132 int global_magic = 0;
134 if (get_literal_global())
135 global_magic |= PATHSPEC_LITERAL;
137 /* --glob-pathspec is overridden by :(literal) */
138 if (get_glob_global() && !(element_magic & PATHSPEC_LITERAL))
139 global_magic |= PATHSPEC_GLOB;
141 if (get_glob_global() && get_noglob_global())
142 die(_("global 'glob' and 'noglob' pathspec settings are incompatible"));
144 if (get_icase_global())
145 global_magic |= PATHSPEC_ICASE;
147 if ((global_magic & PATHSPEC_LITERAL) &&
148 (global_magic & ~PATHSPEC_LITERAL))
149 die(_("global 'literal' pathspec setting is incompatible "
150 "with all other global pathspec settings"));
152 /* --noglob-pathspec adds :(literal) _unless_ :(glob) is specified */
153 if (get_noglob_global() && !(element_magic & PATHSPEC_GLOB))
154 global_magic |= PATHSPEC_LITERAL;
160 * Parse the pathspec element looking for long magic
162 * saves all magic in 'magic'
163 * if prefix magic is used, save the prefix length in 'prefix_len'
164 * returns the position in 'elem' after all magic has been parsed
166 static const char *parse_long_magic(unsigned *magic, int *prefix_len,
172 for (pos = elem + 2; *pos && *pos != ')'; pos = nextat) {
173 size_t len = strcspn(pos, ",)");
177 nextat = pos + len + 1; /* handle ',' */
179 nextat = pos + len; /* handle ')' and '\0' */
184 if (starts_with(pos, "prefix:")) {
186 *prefix_len = strtol(pos + 7, &endptr, 10);
187 if (endptr - pos != len)
188 die(_("invalid parameter for pathspec magic 'prefix'"));
192 for (i = 0; i < ARRAY_SIZE(pathspec_magic); i++) {
193 if (strlen(pathspec_magic[i].name) == len &&
194 !strncmp(pathspec_magic[i].name, pos, len)) {
195 *magic |= pathspec_magic[i].bit;
200 if (ARRAY_SIZE(pathspec_magic) <= i)
201 die(_("Invalid pathspec magic '%.*s' in '%s'"),
202 (int) len, pos, elem);
206 die(_("Missing ')' at the end of pathspec magic in '%s'"),
214 * Parse the pathspec element looking for short magic
216 * saves all magic in 'magic'
217 * returns the position in 'elem' after all magic has been parsed
219 static const char *parse_short_magic(unsigned *magic, const char *elem)
223 for (pos = elem + 1; *pos && *pos != ':'; pos++) {
227 /* Special case alias for '!' */
229 *magic |= PATHSPEC_EXCLUDE;
233 if (!is_pathspec_magic(ch))
236 for (i = 0; i < ARRAY_SIZE(pathspec_magic); i++) {
237 if (pathspec_magic[i].mnemonic == ch) {
238 *magic |= pathspec_magic[i].bit;
243 if (ARRAY_SIZE(pathspec_magic) <= i)
244 die(_("Unimplemented pathspec magic '%c' in '%s'"),
254 static const char *parse_element_magic(unsigned *magic, int *prefix_len,
257 if (elem[0] != ':' || get_literal_global())
258 return elem; /* nothing to do */
259 else if (elem[1] == '(')
261 return parse_long_magic(magic, prefix_len, elem);
264 return parse_short_magic(magic, elem);
267 static void strip_submodule_slash_cheap(struct pathspec_item *item)
269 if (item->len >= 1 && item->match[item->len - 1] == '/') {
270 int i = cache_name_pos(item->match, item->len - 1);
272 if (i >= 0 && S_ISGITLINK(active_cache[i]->ce_mode)) {
274 item->match[item->len] = '\0';
279 static void strip_submodule_slash_expensive(struct pathspec_item *item)
283 for (i = 0; i < active_nr; i++) {
284 struct cache_entry *ce = active_cache[i];
285 int ce_len = ce_namelen(ce);
287 if (!S_ISGITLINK(ce->ce_mode))
290 if (item->len <= ce_len || item->match[ce_len] != '/' ||
291 memcmp(ce->name, item->match, ce_len))
294 if (item->len == ce_len + 1) {
295 /* strip trailing slash */
297 item->match[item->len] = '\0';
299 die(_("Pathspec '%s' is in submodule '%.*s'"),
300 item->original, ce_len, ce->name);
305 static void die_inside_submodule_path(struct pathspec_item *item)
309 for (i = 0; i < active_nr; i++) {
310 struct cache_entry *ce = active_cache[i];
311 int ce_len = ce_namelen(ce);
313 if (!S_ISGITLINK(ce->ce_mode))
316 if (item->len < ce_len ||
317 !(item->match[ce_len] == '/' || item->match[ce_len] == '\0') ||
318 memcmp(ce->name, item->match, ce_len))
321 die(_("Pathspec '%s' is in submodule '%.*s'"),
322 item->original, ce_len, ce->name);
327 * Perform the initialization of a pathspec_item based on a pathspec element.
329 static void init_pathspec_item(struct pathspec_item *item, unsigned flags,
330 const char *prefix, int prefixlen,
333 unsigned magic = 0, element_magic = 0;
334 const char *copyfrom = elt;
336 int pathspec_prefix = -1;
338 /* PATHSPEC_LITERAL_PATH ignores magic */
339 if (flags & PATHSPEC_LITERAL_PATH) {
340 magic = PATHSPEC_LITERAL;
342 copyfrom = parse_element_magic(&element_magic,
345 magic |= element_magic;
346 magic |= get_global_magic(element_magic);
351 if (pathspec_prefix >= 0 &&
352 (prefixlen || (prefix && *prefix)))
353 die("BUG: 'prefix' magic is supposed to be used at worktree's root");
355 if ((magic & PATHSPEC_LITERAL) && (magic & PATHSPEC_GLOB))
356 die(_("%s: 'literal' and 'glob' are incompatible"), elt);
358 /* Create match string which will be used for pathspec matching */
359 if (pathspec_prefix >= 0) {
360 match = xstrdup(copyfrom);
361 prefixlen = pathspec_prefix;
362 } else if (magic & PATHSPEC_FROMTOP) {
363 match = xstrdup(copyfrom);
366 match = prefix_path_gently(prefix, prefixlen,
367 &prefixlen, copyfrom);
369 die(_("%s: '%s' is outside repository"), elt, copyfrom);
373 item->len = strlen(item->match);
374 item->prefix = prefixlen;
377 * Prefix the pathspec (keep all magic) and assign to
378 * original. Useful for passing to another command.
380 if ((flags & PATHSPEC_PREFIX_ORIGIN) &&
381 prefixlen && !get_literal_global()) {
382 struct strbuf sb = STRBUF_INIT;
384 /* Preserve the actual prefix length of each pattern */
385 prefix_magic(&sb, prefixlen, element_magic);
387 strbuf_addstr(&sb, match);
388 item->original = strbuf_detach(&sb, NULL);
390 item->original = xstrdup(elt);
393 if (flags & PATHSPEC_STRIP_SUBMODULE_SLASH_CHEAP)
394 strip_submodule_slash_cheap(item);
396 if (flags & PATHSPEC_STRIP_SUBMODULE_SLASH_EXPENSIVE)
397 strip_submodule_slash_expensive(item);
399 if (magic & PATHSPEC_LITERAL) {
400 item->nowildcard_len = item->len;
402 item->nowildcard_len = simple_length(item->match);
403 if (item->nowildcard_len < prefixlen)
404 item->nowildcard_len = prefixlen;
408 if (magic & PATHSPEC_GLOB) {
410 * FIXME: should we enable ONESTAR in _GLOB for
411 * pattern "* * / * . c"?
414 if (item->nowildcard_len < item->len &&
415 item->match[item->nowildcard_len] == '*' &&
416 no_wildcard(item->match + item->nowildcard_len + 1))
417 item->flags |= PATHSPEC_ONESTAR;
420 /* sanity checks, pathspec matchers assume these are sane */
421 if (item->nowildcard_len > item->len ||
422 item->prefix > item->len) {
424 * This case can be triggered by the user pointing us to a
425 * pathspec inside a submodule, which is an input error.
426 * Detect that here and complain, but fallback in the
427 * non-submodule case to a BUG, as we have no idea what
428 * would trigger that.
430 die_inside_submodule_path(item);
431 die ("BUG: item->nowildcard_len > item->len || item->prefix > item->len)");
435 static int pathspec_item_cmp(const void *a_, const void *b_)
437 struct pathspec_item *a, *b;
439 a = (struct pathspec_item *)a_;
440 b = (struct pathspec_item *)b_;
441 return strcmp(a->match, b->match);
444 static void NORETURN unsupported_magic(const char *pattern,
447 struct strbuf sb = STRBUF_INIT;
449 for (i = 0; i < ARRAY_SIZE(pathspec_magic); i++) {
450 const struct pathspec_magic *m = pathspec_magic + i;
451 if (!(magic & m->bit))
454 strbuf_addstr(&sb, ", ");
457 strbuf_addf(&sb, _("'%s' (mnemonic: '%c')"),
458 m->name, m->mnemonic);
460 strbuf_addf(&sb, "'%s'", m->name);
463 * We may want to substitute "this command" with a command
464 * name. E.g. when add--interactive dies when running
467 die(_("%s: pathspec magic not supported by this command: %s"),
472 * Given command line arguments and a prefix, convert the input to
473 * pathspec. die() if any magic in magic_mask is used.
475 void parse_pathspec(struct pathspec *pathspec,
476 unsigned magic_mask, unsigned flags,
477 const char *prefix, const char **argv)
479 struct pathspec_item *item;
480 const char *entry = argv ? *argv : NULL;
481 int i, n, prefixlen, warn_empty_string, nr_exclude = 0;
483 memset(pathspec, 0, sizeof(*pathspec));
485 if (flags & PATHSPEC_MAXDEPTH_VALID)
486 pathspec->magic |= PATHSPEC_MAXDEPTH;
488 /* No arguments, no prefix -> no pathspec */
489 if (!entry && !prefix)
492 if ((flags & PATHSPEC_PREFER_CWD) &&
493 (flags & PATHSPEC_PREFER_FULL))
494 die("BUG: PATHSPEC_PREFER_CWD and PATHSPEC_PREFER_FULL are incompatible");
496 /* No arguments with prefix -> prefix pathspec */
498 if (flags & PATHSPEC_PREFER_FULL)
501 if (!(flags & PATHSPEC_PREFER_CWD))
502 die("BUG: PATHSPEC_PREFER_CWD requires arguments");
504 pathspec->items = item = xcalloc(1, sizeof(*item));
505 item->match = xstrdup(prefix);
506 item->original = xstrdup(prefix);
507 item->nowildcard_len = item->len = strlen(prefix);
508 item->prefix = item->len;
514 warn_empty_string = 1;
516 if (*argv[n] == '\0' && warn_empty_string) {
517 warning(_("empty strings as pathspecs will be made invalid in upcoming releases. "
518 "please use . instead if you meant to match all paths"));
519 warn_empty_string = 0;
525 ALLOC_ARRAY(pathspec->items, n + 1);
526 item = pathspec->items;
527 prefixlen = prefix ? strlen(prefix) : 0;
529 for (i = 0; i < n; i++) {
532 init_pathspec_item(item + i, flags, prefix, prefixlen, entry);
534 if (item[i].magic & PATHSPEC_EXCLUDE)
536 if (item[i].magic & magic_mask)
537 unsupported_magic(entry, item[i].magic & magic_mask);
539 if ((flags & PATHSPEC_SYMLINK_LEADING_PATH) &&
540 has_symlink_leading_path(item[i].match, item[i].len)) {
541 die(_("pathspec '%s' is beyond a symbolic link"), entry);
544 if (item[i].nowildcard_len < item[i].len)
545 pathspec->has_wildcard = 1;
546 pathspec->magic |= item[i].magic;
550 * If everything is an exclude pattern, add one positive pattern
551 * that matches everyting. We allocated an extra one for this.
553 if (nr_exclude == n) {
554 int plen = (!(flags & PATHSPEC_PREFER_CWD)) ? 0 : prefixlen;
555 init_pathspec_item(item + n, 0, prefix, plen, "");
559 if (pathspec->magic & PATHSPEC_MAXDEPTH) {
560 if (flags & PATHSPEC_KEEP_ORDER)
561 die("BUG: PATHSPEC_MAXDEPTH_VALID and PATHSPEC_KEEP_ORDER are incompatible");
562 QSORT(pathspec->items, pathspec->nr, pathspec_item_cmp);
566 void copy_pathspec(struct pathspec *dst, const struct pathspec *src)
571 ALLOC_ARRAY(dst->items, dst->nr);
572 COPY_ARRAY(dst->items, src->items, dst->nr);
574 for (i = 0; i < dst->nr; i++) {
575 dst->items[i].match = xstrdup(src->items[i].match);
576 dst->items[i].original = xstrdup(src->items[i].original);
580 void clear_pathspec(struct pathspec *pathspec)
584 for (i = 0; i < pathspec->nr; i++) {
585 free(pathspec->items[i].match);
586 free(pathspec->items[i].original);
588 free(pathspec->items);
589 pathspec->items = NULL;