docs: fix filter-branch subdir example for exotic repo names
[gitweb.git] / dir.c
diff --git a/dir.c b/dir.c
index 7f912c76f268e2f27857a67d565e77be0e43660d..570b651a17520cbb0273b9247ab0fcffc0129477 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;
@@ -91,16 +107,30 @@ 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 +139,8 @@ 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;
@@ -223,6 +253,18 @@ 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,
@@ -232,7 +274,7 @@ int add_excludes_from_file_to_list(const char *fname,
 {
        struct stat st;
        int fd, i;
-       size_t size;
+       size_t size = 0;
        char *buf, *entry;
 
        fd = open(fname, O_RDONLY);
@@ -359,12 +401,6 @@ 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))
-                                               return to_exclude;
-                                       else
-                                               continue;
-                               }
                                if (*dtype == DT_UNKNOWN)
                                        *dtype = get_dtype(NULL, pathname, pathlen);
                                if (*dtype != DT_DIR)
@@ -374,14 +410,14 @@ 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;
                                }
                        }
@@ -396,14 +432,14 @@ 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;
                                }
@@ -453,7 +489,7 @@ static struct dir_entry *dir_add_name(struct dir_struct *dir, const char *pathna
        return dir->entries[dir->nr++] = dir_entry_new(pathname, len);
 }
 
-static struct dir_entry *dir_add_ignored(struct dir_struct *dir, const char *pathname, int len)
+struct dir_entry *dir_add_ignored(struct dir_struct *dir, const char *pathname, int len)
 {
        if (!cache_name_is_other(pathname, len))
                return NULL;
@@ -465,9 +501,42 @@ static struct dir_entry *dir_add_ignored(struct dir_struct *dir, const char *pat
 enum exist_status {
        index_nonexistent = 0,
        index_directory,
-       index_gitdir,
+       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
@@ -477,7 +546,12 @@ 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) {
@@ -533,7 +607,7 @@ static enum exist_status directory_exists_in_index(const char *dirname, int len)
 enum directory_treatment {
        show_directory,
        ignore_directory,
-       recurse_into_directory,
+       recurse_into_directory
 };
 
 static enum directory_treatment treat_directory(struct dir_struct *dir,
@@ -684,7 +758,7 @@ static int get_dtype(struct dirent *de, const char *path, int len)
 enum path_treatment {
        path_ignored,
        path_handled,
-       path_recurse,
+       path_recurse
 };
 
 static enum path_treatment treat_one_path(struct dir_struct *dir,
@@ -964,6 +1038,12 @@ char *get_relative_cwd(char *buffer, int size, const char *dir)
        case '/':
                return cwd + 1;
        default:
+               /*
+                * dir can end with a path separator when it's root
+                * directory. Return proper prefix in that case.
+                */
+               if (dir[-1] == '/')
+                       return cwd;
                return NULL;
        }
 }