Merge branch 'nd/struct-pathspec'
[gitweb.git] / dir.c
diff --git a/dir.c b/dir.c
index b68750450cdec89df9ea7595ab9a7022619e6e58..168dad615230d77d7719101b76b50b4f6fe02777 100644 (file)
--- a/dir.c
+++ b/dir.c
@@ -18,6 +18,22 @@ static int read_directory_recursive(struct dir_struct *dir, const char *path, in
        int check_only, const struct path_simplify *simplify);
 static int get_dtype(struct dirent *de, const char *path, int len);
 
+/* helper string functions with support for the ignore_case flag */
+int strcmp_icase(const char *a, const char *b)
+{
+       return ignore_case ? strcasecmp(a, b) : strcmp(a, b);
+}
+
+int strncmp_icase(const char *a, const char *b, size_t count)
+{
+       return ignore_case ? strncasecmp(a, b, count) : strncmp(a, b, count);
+}
+
+int fnmatch_icase(const char *pattern, const char *string, int flags)
+{
+       return fnmatch(pattern, string, flags | (ignore_case ? FNM_CASEFOLD : 0));
+}
+
 static int common_prefix(const char **pathspec)
 {
        const char *path, *slash, *next;
@@ -71,6 +87,21 @@ int fill_directory(struct dir_struct *dir, const char **pathspec)
        return len;
 }
 
+int within_depth(const char *name, int namelen,
+                       int depth, int max_depth)
+{
+       const char *cp = name, *cpe = name + namelen;
+
+       while (cp < cpe) {
+               if (*cp++ != '/')
+                       continue;
+               depth++;
+               if (depth > max_depth)
+                       return 0;
+       }
+       return 1;
+}
+
 /*
  * Does 'match' match the given name?
  * A match is found if
@@ -91,16 +122,30 @@ static int match_one(const char *match, const char *name, int namelen)
        if (!*match)
                return MATCHED_RECURSIVELY;
 
-       for (;;) {
-               unsigned char c1 = *match;
-               unsigned char c2 = *name;
-               if (c1 == '\0' || is_glob_special(c1))
-                       break;
-               if (c1 != c2)
-                       return 0;
-               match++;
-               name++;
-               namelen--;
+       if (ignore_case) {
+               for (;;) {
+                       unsigned char c1 = tolower(*match);
+                       unsigned char c2 = tolower(*name);
+                       if (c1 == '\0' || is_glob_special(c1))
+                               break;
+                       if (c1 != c2)
+                               return 0;
+                       match++;
+                       name++;
+                       namelen--;
+               }
+       } else {
+               for (;;) {
+                       unsigned char c1 = *match;
+                       unsigned char c2 = *name;
+                       if (c1 == '\0' || is_glob_special(c1))
+                               break;
+                       if (c1 != c2)
+                               return 0;
+                       match++;
+                       name++;
+                       namelen--;
+               }
        }
 
 
@@ -109,8 +154,8 @@ static int match_one(const char *match, const char *name, int namelen)
         * we need to match by fnmatch
         */
        matchlen = strlen(match);
-       if (strncmp(match, name, matchlen))
-               return !fnmatch(match, name, 0) ? MATCHED_FNMATCH : 0;
+       if (strncmp_icase(match, name, matchlen))
+               return !fnmatch_icase(match, name, 0) ? MATCHED_FNMATCH : 0;
 
        if (namelen == matchlen)
                return MATCHED_EXACTLY;
@@ -154,6 +199,95 @@ int match_pathspec(const char **pathspec, const char *name, int namelen,
        return retval;
 }
 
+/*
+ * Does 'match' match the given name?
+ * A match is found if
+ *
+ * (1) the 'match' string is leading directory of 'name', or
+ * (2) the 'match' string is a wildcard and matches 'name', or
+ * (3) the 'match' string is exactly the same as 'name'.
+ *
+ * and the return value tells which case it was.
+ *
+ * It returns 0 when there is no match.
+ */
+static int match_pathspec_item(const struct pathspec_item *item, int prefix,
+                              const char *name, int namelen)
+{
+       /* name/namelen has prefix cut off by caller */
+       const char *match = item->match + prefix;
+       int matchlen = item->len - prefix;
+
+       /* If the match was just the prefix, we matched */
+       if (!*match)
+               return MATCHED_RECURSIVELY;
+
+       if (matchlen <= namelen && !strncmp(match, name, matchlen)) {
+               if (matchlen == namelen)
+                       return MATCHED_EXACTLY;
+
+               if (match[matchlen-1] == '/' || name[matchlen] == '/')
+                       return MATCHED_RECURSIVELY;
+       }
+
+       if (item->has_wildcard && !fnmatch(match, name, 0))
+               return MATCHED_FNMATCH;
+
+       return 0;
+}
+
+/*
+ * Given a name and a list of pathspecs, see if the name matches
+ * any of the pathspecs.  The caller is also interested in seeing
+ * all pathspec matches some names it calls this function with
+ * (otherwise the user could have mistyped the unmatched pathspec),
+ * and a mark is left in seen[] array for pathspec element that
+ * actually matched anything.
+ */
+int match_pathspec_depth(const struct pathspec *ps,
+                        const char *name, int namelen,
+                        int prefix, char *seen)
+{
+       int i, retval = 0;
+
+       if (!ps->nr) {
+               if (!ps->recursive || ps->max_depth == -1)
+                       return MATCHED_RECURSIVELY;
+
+               if (within_depth(name, namelen, 0, ps->max_depth))
+                       return MATCHED_EXACTLY;
+               else
+                       return 0;
+       }
+
+       name += prefix;
+       namelen -= prefix;
+
+       for (i = ps->nr - 1; i >= 0; i--) {
+               int how;
+               if (seen && seen[i] == MATCHED_EXACTLY)
+                       continue;
+               how = match_pathspec_item(ps->items+i, prefix, name, namelen);
+               if (ps->recursive && ps->max_depth != -1 &&
+                   how && how != MATCHED_FNMATCH) {
+                       int len = ps->items[i].len;
+                       if (name[len] == '/')
+                               len++;
+                       if (within_depth(name+len, namelen-len, 0, ps->max_depth))
+                               how = MATCHED_EXACTLY;
+                       else
+                               how = 0;
+               }
+               if (how) {
+                       if (retval < how)
+                               retval = how;
+                       if (seen && seen[i] < how)
+                               seen[i] = how;
+               }
+       }
+       return retval;
+}
+
 static int no_wildcard(const char *string)
 {
        return string[strcspn(string, "*?[{\\")] == '\0';
@@ -223,6 +357,18 @@ static void *read_skip_worktree_file_from_index(const char *path, size_t *size)
        return data;
 }
 
+void free_excludes(struct exclude_list *el)
+{
+       int i;
+
+       for (i = 0; i < el->nr; i++)
+               free(el->excludes[i]);
+       free(el->excludes);
+
+       el->nr = 0;
+       el->excludes = NULL;
+}
+
 int add_excludes_from_file_to_list(const char *fname,
                                   const char *base,
                                   int baselen,
@@ -359,13 +505,6 @@ int excluded_from_list(const char *pathname,
                        int to_exclude = x->to_exclude;
 
                        if (x->flags & EXC_FLAG_MUSTBEDIR) {
-                               if (!dtype) {
-                                       if (!prefixcmp(pathname, exclude) &&
-                                           pathname[x->patternlen] == '/')
-                                               return to_exclude;
-                                       else
-                                               continue;
-                               }
                                if (*dtype == DT_UNKNOWN)
                                        *dtype = get_dtype(NULL, pathname, pathlen);
                                if (*dtype != DT_DIR)
@@ -375,14 +514,14 @@ int excluded_from_list(const char *pathname,
                        if (x->flags & EXC_FLAG_NODIR) {
                                /* match basename */
                                if (x->flags & EXC_FLAG_NOWILDCARD) {
-                                       if (!strcmp(exclude, basename))
+                                       if (!strcmp_icase(exclude, basename))
                                                return to_exclude;
                                } else if (x->flags & EXC_FLAG_ENDSWITH) {
                                        if (x->patternlen - 1 <= pathlen &&
-                                           !strcmp(exclude + 1, pathname + pathlen - x->patternlen + 1))
+                                           !strcmp_icase(exclude + 1, pathname + pathlen - x->patternlen + 1))
                                                return to_exclude;
                                } else {
-                                       if (fnmatch(exclude, basename, 0) == 0)
+                                       if (fnmatch_icase(exclude, basename, 0) == 0)
                                                return to_exclude;
                                }
                        }
@@ -397,14 +536,14 @@ int excluded_from_list(const char *pathname,
 
                                if (pathlen < baselen ||
                                    (baselen && pathname[baselen-1] != '/') ||
-                                   strncmp(pathname, x->base, baselen))
+                                   strncmp_icase(pathname, x->base, baselen))
                                    continue;
 
                                if (x->flags & EXC_FLAG_NOWILDCARD) {
-                                       if (!strcmp(exclude, pathname + baselen))
+                                       if (!strcmp_icase(exclude, pathname + baselen))
                                                return to_exclude;
                                } else {
-                                       if (fnmatch(exclude, pathname+baselen,
+                                       if (fnmatch_icase(exclude, pathname+baselen,
                                                    FNM_PATHNAME) == 0)
                                            return to_exclude;
                                }
@@ -469,6 +608,39 @@ enum exist_status {
        index_gitdir
 };
 
+/*
+ * Do not use the alphabetically stored index to look up
+ * the directory name; instead, use the case insensitive
+ * name hash.
+ */
+static enum exist_status directory_exists_in_index_icase(const char *dirname, int len)
+{
+       struct cache_entry *ce = index_name_exists(&the_index, dirname, len + 1, ignore_case);
+       unsigned char endchar;
+
+       if (!ce)
+               return index_nonexistent;
+       endchar = ce->name[len];
+
+       /*
+        * The cache_entry structure returned will contain this dirname
+        * and possibly additional path components.
+        */
+       if (endchar == '/')
+               return index_directory;
+
+       /*
+        * If there are no additional path components, then this cache_entry
+        * represents a submodule.  Submodules, despite being directories,
+        * are stored in the cache without a closing slash.
+        */
+       if (!endchar && S_ISGITLINK(ce->ce_mode))
+               return index_gitdir;
+
+       /* This should never be hit, but it exists just in case. */
+       return index_nonexistent;
+}
+
 /*
  * The index sorts alphabetically by entry name, which
  * means that a gitlink sorts as '\0' at the end, while
@@ -478,7 +650,12 @@ enum exist_status {
  */
 static enum exist_status directory_exists_in_index(const char *dirname, int len)
 {
-       int pos = cache_name_pos(dirname, len);
+       int pos;
+
+       if (ignore_case)
+               return directory_exists_in_index_icase(dirname, len);
+
+       pos = cache_name_pos(dirname, len);
        if (pos < 0)
                pos = -pos-1;
        while (pos < active_nr) {
@@ -1078,3 +1255,50 @@ int remove_path(const char *name)
        return 0;
 }
 
+static int pathspec_item_cmp(const void *a_, const void *b_)
+{
+       struct pathspec_item *a, *b;
+
+       a = (struct pathspec_item *)a_;
+       b = (struct pathspec_item *)b_;
+       return strcmp(a->match, b->match);
+}
+
+int init_pathspec(struct pathspec *pathspec, const char **paths)
+{
+       const char **p = paths;
+       int i;
+
+       memset(pathspec, 0, sizeof(*pathspec));
+       if (!p)
+               return 0;
+       while (*p)
+               p++;
+       pathspec->raw = paths;
+       pathspec->nr = p - paths;
+       if (!pathspec->nr)
+               return 0;
+
+       pathspec->items = xmalloc(sizeof(struct pathspec_item)*pathspec->nr);
+       for (i = 0; i < pathspec->nr; i++) {
+               struct pathspec_item *item = pathspec->items+i;
+               const char *path = paths[i];
+
+               item->match = path;
+               item->len = strlen(path);
+               item->has_wildcard = !no_wildcard(path);
+               if (item->has_wildcard)
+                       pathspec->has_wildcard = 1;
+       }
+
+       qsort(pathspec->items, pathspec->nr,
+             sizeof(struct pathspec_item), pathspec_item_cmp);
+
+       return 0;
+}
+
+void free_pathspec(struct pathspec *pathspec)
+{
+       free(pathspec->items);
+       pathspec->items = NULL;
+}