2 * This handles recursive filename detection with exclude
3 * files, index knowledge etc..
5 * Copyright (C) Linus Torvalds, 2005-2006
6 * Junio Hamano, 2005-2006
12 struct path_simplify {
17 static int read_directory_recursive(struct dir_struct *dir, const char *path, int len,
18 int check_only, const struct path_simplify *simplify);
19 static int get_dtype(struct dirent *de, const char *path, int len);
21 /* helper string functions with support for the ignore_case flag */
22 int strcmp_icase(const char *a, const char *b)
24 return ignore_case ? strcasecmp(a, b) : strcmp(a, b);
27 int strncmp_icase(const char *a, const char *b, size_t count)
29 return ignore_case ? strncasecmp(a, b, count) : strncmp(a, b, count);
32 int fnmatch_icase(const char *pattern, const char *string, int flags)
34 return fnmatch(pattern, string, flags | (ignore_case ? FNM_CASEFOLD : 0));
37 static size_t common_prefix_len(const char **pathspec)
39 const char *n, *first;
46 while ((n = *pathspec++)) {
48 for (i = 0; first == n || i < max; i++) {
50 if (!c || c != first[i] || is_glob_special(c))
55 if (first == n || len < max) {
65 * Returns a copy of the longest leading path common among all
68 char *common_prefix(const char **pathspec)
70 unsigned long len = common_prefix_len(pathspec);
72 return len ? xmemdupz(*pathspec, len) : NULL;
75 int fill_directory(struct dir_struct *dir, const char **pathspec)
80 * Calculate common prefix for the pathspec, and
81 * use that to optimize the directory walk
83 len = common_prefix_len(pathspec);
85 /* Read the directory and prune it */
86 read_directory(dir, pathspec ? *pathspec : "", len, pathspec);
90 int within_depth(const char *name, int namelen,
91 int depth, int max_depth)
93 const char *cp = name, *cpe = name + namelen;
99 if (depth > max_depth)
106 * Does 'match' match the given name?
107 * A match is found if
109 * (1) the 'match' string is leading directory of 'name', or
110 * (2) the 'match' string is a wildcard and matches 'name', or
111 * (3) the 'match' string is exactly the same as 'name'.
113 * and the return value tells which case it was.
115 * It returns 0 when there is no match.
117 static int match_one(const char *match, const char *name, int namelen)
121 /* If the match was just the prefix, we matched */
123 return MATCHED_RECURSIVELY;
127 unsigned char c1 = tolower(*match);
128 unsigned char c2 = tolower(*name);
129 if (c1 == '\0' || is_glob_special(c1))
139 unsigned char c1 = *match;
140 unsigned char c2 = *name;
141 if (c1 == '\0' || is_glob_special(c1))
153 * If we don't match the matchstring exactly,
154 * we need to match by fnmatch
156 matchlen = strlen(match);
157 if (strncmp_icase(match, name, matchlen))
158 return !fnmatch_icase(match, name, 0) ? MATCHED_FNMATCH : 0;
160 if (namelen == matchlen)
161 return MATCHED_EXACTLY;
162 if (match[matchlen-1] == '/' || name[matchlen] == '/')
163 return MATCHED_RECURSIVELY;
168 * Given a name and a list of pathspecs, see if the name matches
169 * any of the pathspecs. The caller is also interested in seeing
170 * all pathspec matches some names it calls this function with
171 * (otherwise the user could have mistyped the unmatched pathspec),
172 * and a mark is left in seen[] array for pathspec element that
173 * actually matched anything.
175 int match_pathspec(const char **pathspec, const char *name, int namelen,
176 int prefix, char *seen)
186 for (i = 0; pathspec[i] != NULL; i++) {
188 const char *match = pathspec[i] + prefix;
189 if (seen && seen[i] == MATCHED_EXACTLY)
191 how = match_one(match, name, namelen);
195 if (seen && seen[i] < how)
203 * Does 'match' match the given name?
204 * A match is found if
206 * (1) the 'match' string is leading directory of 'name', or
207 * (2) the 'match' string is a wildcard and matches 'name', or
208 * (3) the 'match' string is exactly the same as 'name'.
210 * and the return value tells which case it was.
212 * It returns 0 when there is no match.
214 static int match_pathspec_item(const struct pathspec_item *item, int prefix,
215 const char *name, int namelen)
217 /* name/namelen has prefix cut off by caller */
218 const char *match = item->match + prefix;
219 int matchlen = item->len - prefix;
221 /* If the match was just the prefix, we matched */
223 return MATCHED_RECURSIVELY;
225 if (matchlen <= namelen && !strncmp(match, name, matchlen)) {
226 if (matchlen == namelen)
227 return MATCHED_EXACTLY;
229 if (match[matchlen-1] == '/' || name[matchlen] == '/')
230 return MATCHED_RECURSIVELY;
233 if (item->use_wildcard && !fnmatch(match, name, 0))
234 return MATCHED_FNMATCH;
240 * Given a name and a list of pathspecs, see if the name matches
241 * any of the pathspecs. The caller is also interested in seeing
242 * all pathspec matches some names it calls this function with
243 * (otherwise the user could have mistyped the unmatched pathspec),
244 * and a mark is left in seen[] array for pathspec element that
245 * actually matched anything.
247 int match_pathspec_depth(const struct pathspec *ps,
248 const char *name, int namelen,
249 int prefix, char *seen)
254 if (!ps->recursive || ps->max_depth == -1)
255 return MATCHED_RECURSIVELY;
257 if (within_depth(name, namelen, 0, ps->max_depth))
258 return MATCHED_EXACTLY;
266 for (i = ps->nr - 1; i >= 0; i--) {
268 if (seen && seen[i] == MATCHED_EXACTLY)
270 how = match_pathspec_item(ps->items+i, prefix, name, namelen);
271 if (ps->recursive && ps->max_depth != -1 &&
272 how && how != MATCHED_FNMATCH) {
273 int len = ps->items[i].len;
274 if (name[len] == '/')
276 if (within_depth(name+len, namelen-len, 0, ps->max_depth))
277 how = MATCHED_EXACTLY;
284 if (seen && seen[i] < how)
292 * Return the length of the "simple" part of a path match limiter.
294 static int simple_length(const char *match)
299 unsigned char c = *match++;
301 if (c == '\0' || is_glob_special(c))
306 static int no_wildcard(const char *string)
308 return string[simple_length(string)] == '\0';
311 void add_exclude(const char *string, const char *base,
312 int baselen, struct exclude_list *which)
319 if (*string == '!') {
323 len = strlen(string);
324 if (len && string[len - 1] == '/') {
326 x = xmalloc(sizeof(*x) + len);
328 memcpy(s, string, len - 1);
332 flags = EXC_FLAG_MUSTBEDIR;
334 x = xmalloc(sizeof(*x));
337 x->to_exclude = to_exclude;
338 x->patternlen = strlen(string);
340 x->baselen = baselen;
342 if (!strchr(string, '/'))
343 x->flags |= EXC_FLAG_NODIR;
344 x->nowildcardlen = simple_length(string);
345 if (*string == '*' && no_wildcard(string+1))
346 x->flags |= EXC_FLAG_ENDSWITH;
347 ALLOC_GROW(which->excludes, which->nr + 1, which->alloc);
348 which->excludes[which->nr++] = x;
351 static void *read_skip_worktree_file_from_index(const char *path, size_t *size)
355 enum object_type type;
357 struct index_state *istate = &the_index;
360 pos = index_name_pos(istate, path, len);
363 if (!ce_skip_worktree(istate->cache[pos]))
365 data = read_sha1_file(istate->cache[pos]->sha1, &type, &sz);
366 if (!data || type != OBJ_BLOB) {
374 void free_excludes(struct exclude_list *el)
378 for (i = 0; i < el->nr; i++)
379 free(el->excludes[i]);
386 int add_excludes_from_file_to_list(const char *fname,
390 struct exclude_list *which,
398 fd = open(fname, O_RDONLY);
399 if (fd < 0 || fstat(fd, &st) < 0) {
403 (buf = read_skip_worktree_file_from_index(fname, &size)) == NULL)
409 if (buf[size-1] != '\n') {
410 buf = xrealloc(buf, size+1);
415 size = xsize_t(st.st_size);
420 buf = xmalloc(size+1);
421 if (read_in_full(fd, buf, size) != size) {
433 for (i = 0; i < size; i++) {
434 if (buf[i] == '\n') {
435 if (entry != buf + i && entry[0] != '#') {
436 buf[i - (i && buf[i-1] == '\r')] = 0;
437 add_exclude(entry, base, baselen, which);
445 void add_excludes_from_file(struct dir_struct *dir, const char *fname)
447 if (add_excludes_from_file_to_list(fname, "", 0, NULL,
448 &dir->exclude_list[EXC_FILE], 0) < 0)
449 die("cannot use %s as an exclude file", fname);
452 static void prep_exclude(struct dir_struct *dir, const char *base, int baselen)
454 struct exclude_list *el;
455 struct exclude_stack *stk = NULL;
458 if ((!dir->exclude_per_dir) ||
459 (baselen + strlen(dir->exclude_per_dir) >= PATH_MAX))
460 return; /* too long a path -- ignore */
462 /* Pop the ones that are not the prefix of the path being checked. */
463 el = &dir->exclude_list[EXC_DIRS];
464 while ((stk = dir->exclude_stack) != NULL) {
465 if (stk->baselen <= baselen &&
466 !strncmp(dir->basebuf, base, stk->baselen))
468 dir->exclude_stack = stk->prev;
469 while (stk->exclude_ix < el->nr)
470 free(el->excludes[--el->nr]);
475 /* Read from the parent directories and push them down. */
476 current = stk ? stk->baselen : -1;
477 while (current < baselen) {
478 struct exclude_stack *stk = xcalloc(1, sizeof(*stk));
486 cp = strchr(base + current + 1, '/');
488 die("oops in prep_exclude");
491 stk->prev = dir->exclude_stack;
492 stk->baselen = cp - base;
493 stk->exclude_ix = el->nr;
494 memcpy(dir->basebuf + current, base + current,
495 stk->baselen - current);
496 strcpy(dir->basebuf + stk->baselen, dir->exclude_per_dir);
497 add_excludes_from_file_to_list(dir->basebuf,
498 dir->basebuf, stk->baselen,
499 &stk->filebuf, el, 1);
500 dir->exclude_stack = stk;
501 current = stk->baselen;
503 dir->basebuf[baselen] = '\0';
506 static int match_basename(const char *basename, int basenamelen,
507 const char *pattern, int prefix, int patternlen,
510 if (prefix == patternlen) {
511 if (!strcmp_icase(pattern, basename))
513 } else if (flags & EXC_FLAG_ENDSWITH) {
514 if (patternlen - 1 <= basenamelen &&
515 !strcmp_icase(pattern + 1,
516 basename + basenamelen - patternlen + 1))
519 if (fnmatch_icase(pattern, basename, 0) == 0)
525 static int match_pathname(const char *pathname, int pathlen,
526 const char *base, int baselen,
527 const char *pattern, int prefix, int patternlen,
534 * match with FNM_PATHNAME; the pattern has base implicitly
537 if (*pattern == '/') {
543 * baselen does not count the trailing slash. base[] may or
544 * may not end with a trailing slash though.
546 if (pathlen < baselen + 1 ||
547 (baselen && pathname[baselen] != '/') ||
548 strncmp_icase(pathname, base, baselen))
551 namelen = baselen ? pathlen - baselen - 1 : pathlen;
552 name = pathname + pathlen - namelen;
556 * if the non-wildcard part is longer than the
557 * remaining pathname, surely it cannot match.
559 if (prefix > namelen)
562 if (strncmp_icase(pattern, name, prefix))
569 return fnmatch_icase(pattern, name, FNM_PATHNAME) == 0;
572 /* Scan the list and let the last match determine the fate.
573 * Return 1 for exclude, 0 for include and -1 for undecided.
575 int excluded_from_list(const char *pathname,
576 int pathlen, const char *basename, int *dtype,
577 struct exclude_list *el)
582 return -1; /* undefined */
584 for (i = el->nr - 1; 0 <= i; i--) {
585 struct exclude *x = el->excludes[i];
586 const char *exclude = x->pattern;
587 int to_exclude = x->to_exclude;
588 int prefix = x->nowildcardlen;
590 if (x->flags & EXC_FLAG_MUSTBEDIR) {
591 if (*dtype == DT_UNKNOWN)
592 *dtype = get_dtype(NULL, pathname, pathlen);
593 if (*dtype != DT_DIR)
597 if (x->flags & EXC_FLAG_NODIR) {
598 if (match_basename(basename,
599 pathlen - (basename - pathname),
600 exclude, prefix, x->patternlen,
606 assert(x->baselen == 0 || x->base[x->baselen - 1] == '/');
607 if (match_pathname(pathname, pathlen,
608 x->base, x->baselen ? x->baselen - 1 : 0,
609 exclude, prefix, x->patternlen, x->flags))
612 return -1; /* undecided */
615 static int excluded(struct dir_struct *dir, const char *pathname, int *dtype_p)
617 int pathlen = strlen(pathname);
619 const char *basename = strrchr(pathname, '/');
620 basename = (basename) ? basename+1 : pathname;
622 prep_exclude(dir, pathname, basename-pathname);
623 for (st = EXC_CMDL; st <= EXC_FILE; st++) {
624 switch (excluded_from_list(pathname, pathlen, basename,
625 dtype_p, &dir->exclude_list[st])) {
635 void path_exclude_check_init(struct path_exclude_check *check,
636 struct dir_struct *dir)
639 strbuf_init(&check->path, 256);
642 void path_exclude_check_clear(struct path_exclude_check *check)
644 strbuf_release(&check->path);
648 * Is this name excluded? This is for a caller like show_files() that
649 * do not honor directory hierarchy and iterate through paths that are
650 * possibly in an ignored directory.
652 * A path to a directory known to be excluded is left in check->path to
653 * optimize for repeated checks for files in the same excluded directory.
655 int path_excluded(struct path_exclude_check *check,
656 const char *name, int namelen, int *dtype)
659 struct strbuf *path = &check->path;
662 * we allow the caller to pass namelen as an optimization; it
663 * must match the length of the name, as we eventually call
664 * excluded() on the whole name string.
667 namelen = strlen(name);
670 path->len <= namelen &&
671 !memcmp(name, path->buf, path->len) &&
672 (!name[path->len] || name[path->len] == '/'))
675 strbuf_setlen(path, 0);
676 for (i = 0; name[i]; i++) {
681 if (excluded(check->dir, path->buf, &dt))
684 strbuf_addch(path, ch);
687 /* An entry in the index; cannot be a directory with subentries */
688 strbuf_setlen(path, 0);
690 return excluded(check->dir, name, dtype);
693 static struct dir_entry *dir_entry_new(const char *pathname, int len)
695 struct dir_entry *ent;
697 ent = xmalloc(sizeof(*ent) + len + 1);
699 memcpy(ent->name, pathname, len);
704 static struct dir_entry *dir_add_name(struct dir_struct *dir, const char *pathname, int len)
706 if (cache_name_exists(pathname, len, ignore_case))
709 ALLOC_GROW(dir->entries, dir->nr+1, dir->alloc);
710 return dir->entries[dir->nr++] = dir_entry_new(pathname, len);
713 struct dir_entry *dir_add_ignored(struct dir_struct *dir, const char *pathname, int len)
715 if (!cache_name_is_other(pathname, len))
718 ALLOC_GROW(dir->ignored, dir->ignored_nr+1, dir->ignored_alloc);
719 return dir->ignored[dir->ignored_nr++] = dir_entry_new(pathname, len);
723 index_nonexistent = 0,
729 * Do not use the alphabetically stored index to look up
730 * the directory name; instead, use the case insensitive
733 static enum exist_status directory_exists_in_index_icase(const char *dirname, int len)
735 struct cache_entry *ce = index_name_exists(&the_index, dirname, len + 1, ignore_case);
736 unsigned char endchar;
739 return index_nonexistent;
740 endchar = ce->name[len];
743 * The cache_entry structure returned will contain this dirname
744 * and possibly additional path components.
747 return index_directory;
750 * If there are no additional path components, then this cache_entry
751 * represents a submodule. Submodules, despite being directories,
752 * are stored in the cache without a closing slash.
754 if (!endchar && S_ISGITLINK(ce->ce_mode))
757 /* This should never be hit, but it exists just in case. */
758 return index_nonexistent;
762 * The index sorts alphabetically by entry name, which
763 * means that a gitlink sorts as '\0' at the end, while
764 * a directory (which is defined not as an entry, but as
765 * the files it contains) will sort with the '/' at the
768 static enum exist_status directory_exists_in_index(const char *dirname, int len)
773 return directory_exists_in_index_icase(dirname, len);
775 pos = cache_name_pos(dirname, len);
778 while (pos < active_nr) {
779 struct cache_entry *ce = active_cache[pos++];
780 unsigned char endchar;
782 if (strncmp(ce->name, dirname, len))
784 endchar = ce->name[len];
788 return index_directory;
789 if (!endchar && S_ISGITLINK(ce->ce_mode))
792 return index_nonexistent;
796 * When we find a directory when traversing the filesystem, we
797 * have three distinct cases:
800 * - see it as a directory
803 * and which one we choose depends on a combination of existing
804 * git index contents and the flags passed into the directory
807 * Case 1: If we *already* have entries in the index under that
808 * directory name, we always recurse into the directory to see
811 * Case 2: If we *already* have that directory name as a gitlink,
812 * we always continue to see it as a gitlink, regardless of whether
813 * there is an actual git directory there or not (it might not
814 * be checked out as a subproject!)
816 * Case 3: if we didn't have it in the index previously, we
817 * have a few sub-cases:
819 * (a) if "show_other_directories" is true, we show it as
820 * just a directory, unless "hide_empty_directories" is
821 * also true and the directory is empty, in which case
822 * we just ignore it entirely.
823 * (b) if it looks like a git directory, and we don't have
824 * 'no_gitlinks' set we treat it as a gitlink, and show it
826 * (c) otherwise, we recurse into it.
828 enum directory_treatment {
831 recurse_into_directory
834 static enum directory_treatment treat_directory(struct dir_struct *dir,
835 const char *dirname, int len,
836 const struct path_simplify *simplify)
838 /* The "len-1" is to strip the final '/' */
839 switch (directory_exists_in_index(dirname, len-1)) {
840 case index_directory:
841 return recurse_into_directory;
844 if (dir->flags & DIR_SHOW_OTHER_DIRECTORIES)
845 return ignore_directory;
846 return show_directory;
848 case index_nonexistent:
849 if (dir->flags & DIR_SHOW_OTHER_DIRECTORIES)
851 if (!(dir->flags & DIR_NO_GITLINKS)) {
852 unsigned char sha1[20];
853 if (resolve_gitlink_ref(dirname, "HEAD", sha1) == 0)
854 return show_directory;
856 return recurse_into_directory;
859 /* This is the "show_other_directories" case */
860 if (!(dir->flags & DIR_HIDE_EMPTY_DIRECTORIES))
861 return show_directory;
862 if (!read_directory_recursive(dir, dirname, len, 1, simplify))
863 return ignore_directory;
864 return show_directory;
868 * This is an inexact early pruning of any recursive directory
869 * reading - if the path cannot possibly be in the pathspec,
870 * return true, and we'll skip it early.
872 static int simplify_away(const char *path, int pathlen, const struct path_simplify *simplify)
876 const char *match = simplify->path;
877 int len = simplify->len;
883 if (!memcmp(path, match, len))
893 * This function tells us whether an excluded path matches a
894 * list of "interesting" pathspecs. That is, whether a path matched
895 * by any of the pathspecs could possibly be ignored by excluding
896 * the specified path. This can happen if:
898 * 1. the path is mentioned explicitly in the pathspec
900 * 2. the path is a directory prefix of some element in the
903 static int exclude_matches_pathspec(const char *path, int len,
904 const struct path_simplify *simplify)
907 for (; simplify->path; simplify++) {
908 if (len == simplify->len
909 && !memcmp(path, simplify->path, len))
911 if (len < simplify->len
912 && simplify->path[len] == '/'
913 && !memcmp(path, simplify->path, len))
920 static int get_index_dtype(const char *path, int len)
923 struct cache_entry *ce;
925 ce = cache_name_exists(path, len, 0);
927 if (!ce_uptodate(ce))
929 if (S_ISGITLINK(ce->ce_mode))
932 * Nobody actually cares about the
933 * difference between DT_LNK and DT_REG
938 /* Try to look it up as a directory */
939 pos = cache_name_pos(path, len);
943 while (pos < active_nr) {
944 ce = active_cache[pos++];
945 if (strncmp(ce->name, path, len))
947 if (ce->name[len] > '/')
949 if (ce->name[len] < '/')
951 if (!ce_uptodate(ce))
952 break; /* continue? */
958 static int get_dtype(struct dirent *de, const char *path, int len)
960 int dtype = de ? DTYPE(de) : DT_UNKNOWN;
963 if (dtype != DT_UNKNOWN)
965 dtype = get_index_dtype(path, len);
966 if (dtype != DT_UNKNOWN)
968 if (lstat(path, &st))
970 if (S_ISREG(st.st_mode))
972 if (S_ISDIR(st.st_mode))
974 if (S_ISLNK(st.st_mode))
979 enum path_treatment {
985 static enum path_treatment treat_one_path(struct dir_struct *dir,
987 const struct path_simplify *simplify,
988 int dtype, struct dirent *de)
990 int exclude = excluded(dir, path->buf, &dtype);
991 if (exclude && (dir->flags & DIR_COLLECT_IGNORED)
992 && exclude_matches_pathspec(path->buf, path->len, simplify))
993 dir_add_ignored(dir, path->buf, path->len);
996 * Excluded? If we don't explicitly want to show
997 * ignored files, ignore it
999 if (exclude && !(dir->flags & DIR_SHOW_IGNORED))
1000 return path_ignored;
1002 if (dtype == DT_UNKNOWN)
1003 dtype = get_dtype(de, path->buf, path->len);
1006 * Do we want to see just the ignored files?
1007 * We still need to recurse into directories,
1008 * even if we don't ignore them, since the
1009 * directory may contain files that we do..
1011 if (!exclude && (dir->flags & DIR_SHOW_IGNORED)) {
1012 if (dtype != DT_DIR)
1013 return path_ignored;
1018 return path_ignored;
1020 strbuf_addch(path, '/');
1021 switch (treat_directory(dir, path->buf, path->len, simplify)) {
1022 case show_directory:
1023 if (exclude != !!(dir->flags
1024 & DIR_SHOW_IGNORED))
1025 return path_ignored;
1027 case recurse_into_directory:
1028 return path_recurse;
1029 case ignore_directory:
1030 return path_ignored;
1037 return path_handled;
1040 static enum path_treatment treat_path(struct dir_struct *dir,
1042 struct strbuf *path,
1044 const struct path_simplify *simplify)
1048 if (is_dot_or_dotdot(de->d_name) || !strcmp(de->d_name, ".git"))
1049 return path_ignored;
1050 strbuf_setlen(path, baselen);
1051 strbuf_addstr(path, de->d_name);
1052 if (simplify_away(path->buf, path->len, simplify))
1053 return path_ignored;
1056 return treat_one_path(dir, path, simplify, dtype, de);
1060 * Read a directory tree. We currently ignore anything but
1061 * directories, regular files and symlinks. That's because git
1062 * doesn't handle them at all yet. Maybe that will change some
1065 * Also, we ignore the name ".git" (even if it is not a directory).
1066 * That likely will not change.
1068 static int read_directory_recursive(struct dir_struct *dir,
1069 const char *base, int baselen,
1071 const struct path_simplify *simplify)
1076 struct strbuf path = STRBUF_INIT;
1078 strbuf_add(&path, base, baselen);
1080 fdir = opendir(path.len ? path.buf : ".");
1084 while ((de = readdir(fdir)) != NULL) {
1085 switch (treat_path(dir, de, &path, baselen, simplify)) {
1087 contents += read_directory_recursive(dir, path.buf,
1099 dir_add_name(dir, path.buf, path.len);
1103 strbuf_release(&path);
1108 static int cmp_name(const void *p1, const void *p2)
1110 const struct dir_entry *e1 = *(const struct dir_entry **)p1;
1111 const struct dir_entry *e2 = *(const struct dir_entry **)p2;
1113 return cache_name_compare(e1->name, e1->len,
1117 static struct path_simplify *create_simplify(const char **pathspec)
1120 struct path_simplify *simplify = NULL;
1125 for (nr = 0 ; ; nr++) {
1128 alloc = alloc_nr(alloc);
1129 simplify = xrealloc(simplify, alloc * sizeof(*simplify));
1131 match = *pathspec++;
1134 simplify[nr].path = match;
1135 simplify[nr].len = simple_length(match);
1137 simplify[nr].path = NULL;
1138 simplify[nr].len = 0;
1142 static void free_simplify(struct path_simplify *simplify)
1147 static int treat_leading_path(struct dir_struct *dir,
1148 const char *path, int len,
1149 const struct path_simplify *simplify)
1151 struct strbuf sb = STRBUF_INIT;
1152 int baselen, rc = 0;
1155 while (len && path[len - 1] == '/')
1161 cp = path + baselen + !!baselen;
1162 cp = memchr(cp, '/', path + len - cp);
1166 baselen = cp - path;
1167 strbuf_setlen(&sb, 0);
1168 strbuf_add(&sb, path, baselen);
1169 if (!is_directory(sb.buf))
1171 if (simplify_away(sb.buf, sb.len, simplify))
1173 if (treat_one_path(dir, &sb, simplify,
1174 DT_DIR, NULL) == path_ignored)
1175 break; /* do not recurse into it */
1176 if (len <= baselen) {
1178 break; /* finished checking */
1181 strbuf_release(&sb);
1185 int read_directory(struct dir_struct *dir, const char *path, int len, const char **pathspec)
1187 struct path_simplify *simplify;
1189 if (has_symlink_leading_path(path, len))
1192 simplify = create_simplify(pathspec);
1193 if (!len || treat_leading_path(dir, path, len, simplify))
1194 read_directory_recursive(dir, path, len, 0, simplify);
1195 free_simplify(simplify);
1196 qsort(dir->entries, dir->nr, sizeof(struct dir_entry *), cmp_name);
1197 qsort(dir->ignored, dir->ignored_nr, sizeof(struct dir_entry *), cmp_name);
1201 int file_exists(const char *f)
1204 return lstat(f, &sb) == 0;
1208 * Given two normalized paths (a trailing slash is ok), if subdir is
1209 * outside dir, return -1. Otherwise return the offset in subdir that
1210 * can be used as relative path to dir.
1212 int dir_inside_of(const char *subdir, const char *dir)
1216 assert(dir && subdir && *dir && *subdir);
1218 while (*dir && *subdir && *dir == *subdir) {
1224 /* hel[p]/me vs hel[l]/yeah */
1225 if (*dir && *subdir)
1229 return !*dir ? offset : -1; /* same dir */
1231 /* foo/[b]ar vs foo/[] */
1232 if (is_dir_sep(dir[-1]))
1233 return is_dir_sep(subdir[-1]) ? offset : -1;
1235 /* foo[/]bar vs foo[] */
1236 return is_dir_sep(*subdir) ? offset + 1 : -1;
1239 int is_inside_dir(const char *dir)
1244 if (!getcwd(cwd, sizeof(cwd)))
1245 die_errno("can't find the current directory");
1246 return dir_inside_of(cwd, dir) >= 0;
1249 int is_empty_dir(const char *path)
1251 DIR *dir = opendir(path);
1258 while ((e = readdir(dir)) != NULL)
1259 if (!is_dot_or_dotdot(e->d_name)) {
1268 static int remove_dir_recurse(struct strbuf *path, int flag, int *kept_up)
1272 int ret = 0, original_len = path->len, len, kept_down = 0;
1273 int only_empty = (flag & REMOVE_DIR_EMPTY_ONLY);
1274 int keep_toplevel = (flag & REMOVE_DIR_KEEP_TOPLEVEL);
1275 unsigned char submodule_head[20];
1277 if ((flag & REMOVE_DIR_KEEP_NESTED_GIT) &&
1278 !resolve_gitlink_ref(path->buf, "HEAD", submodule_head)) {
1279 /* Do not descend and nuke a nested git work tree. */
1285 flag &= ~REMOVE_DIR_KEEP_TOPLEVEL;
1286 dir = opendir(path->buf);
1288 /* an empty dir could be removed even if it is unreadble */
1290 return rmdir(path->buf);
1294 if (path->buf[original_len - 1] != '/')
1295 strbuf_addch(path, '/');
1298 while ((e = readdir(dir)) != NULL) {
1300 if (is_dot_or_dotdot(e->d_name))
1303 strbuf_setlen(path, len);
1304 strbuf_addstr(path, e->d_name);
1305 if (lstat(path->buf, &st))
1307 else if (S_ISDIR(st.st_mode)) {
1308 if (!remove_dir_recurse(path, flag, &kept_down))
1309 continue; /* happy */
1310 } else if (!only_empty && !unlink(path->buf))
1311 continue; /* happy, too */
1313 /* path too long, stat fails, or non-directory still exists */
1319 strbuf_setlen(path, original_len);
1320 if (!ret && !keep_toplevel && !kept_down)
1321 ret = rmdir(path->buf);
1324 * report the uplevel that it is not an error that we
1325 * did not rmdir() our directory.
1331 int remove_dir_recursively(struct strbuf *path, int flag)
1333 return remove_dir_recurse(path, flag, NULL);
1336 void setup_standard_excludes(struct dir_struct *dir)
1340 dir->exclude_per_dir = ".gitignore";
1341 path = git_path("info/exclude");
1342 if (!access(path, R_OK))
1343 add_excludes_from_file(dir, path);
1344 if (excludes_file && !access(excludes_file, R_OK))
1345 add_excludes_from_file(dir, excludes_file);
1348 int remove_path(const char *name)
1352 if (unlink(name) && errno != ENOENT)
1355 slash = strrchr(name, '/');
1357 char *dirs = xstrdup(name);
1358 slash = dirs + (slash - name);
1361 } while (rmdir(dirs) == 0 && (slash = strrchr(dirs, '/')));
1367 static int pathspec_item_cmp(const void *a_, const void *b_)
1369 struct pathspec_item *a, *b;
1371 a = (struct pathspec_item *)a_;
1372 b = (struct pathspec_item *)b_;
1373 return strcmp(a->match, b->match);
1376 int init_pathspec(struct pathspec *pathspec, const char **paths)
1378 const char **p = paths;
1381 memset(pathspec, 0, sizeof(*pathspec));
1386 pathspec->raw = paths;
1387 pathspec->nr = p - paths;
1391 pathspec->items = xmalloc(sizeof(struct pathspec_item)*pathspec->nr);
1392 for (i = 0; i < pathspec->nr; i++) {
1393 struct pathspec_item *item = pathspec->items+i;
1394 const char *path = paths[i];
1397 item->len = strlen(path);
1398 item->use_wildcard = !no_wildcard(path);
1399 if (item->use_wildcard)
1400 pathspec->has_wildcard = 1;
1403 qsort(pathspec->items, pathspec->nr,
1404 sizeof(struct pathspec_item), pathspec_item_cmp);
1409 void free_pathspec(struct pathspec *pathspec)
1411 free(pathspec->items);
1412 pathspec->items = NULL;