11 files changed, 330 insertions, 81 deletions

diff --git a/cache.h b/cache.h
index 66cc41f..ac9276b 100644
--- a/cache.h
+++ b/cache.h
@@ -34,2 +34,4 @@ extern void cache_log(const char *format, ...);
 
+extern unsigned long hash_str(const char *str);
+
 #endif /* CGIT_CACHE_H */
diff --git a/cgit.c b/cgit.c
index ec40e1f..bd37788 100644
--- a/cgit.c
+++ b/cgit.c
@@ -42,5 +42,54 @@ struct cgit_filter *new_filter(const char *cmd, int extra_args)
 
+static void process_cached_repolist(const char *path);
+
+void repo_config(struct cgit_repo *repo, const char *name, const char *value)
+{
+        if (!strcmp(name, "name"))
+                repo->name = xstrdup(value);
+        else if (!strcmp(name, "clone-url"))
+                repo->clone_url = xstrdup(value);
+        else if (!strcmp(name, "desc"))
+                repo->desc = xstrdup(value);
+        else if (!strcmp(name, "owner"))
+                repo->owner = xstrdup(value);
+        else if (!strcmp(name, "defbranch"))
+                repo->defbranch = xstrdup(value);
+        else if (!strcmp(name, "snapshots"))
+                repo->snapshots = ctx.cfg.snapshots & cgit_parse_snapshots_mask(value);
+        else if (!strcmp(name, "enable-log-filecount"))
+                repo->enable_log_filecount = ctx.cfg.enable_log_filecount * atoi(value);
+        else if (!strcmp(name, "enable-log-linecount"))
+                repo->enable_log_linecount = ctx.cfg.enable_log_linecount * atoi(value);
+        else if (!strcmp(name, "max-stats"))
+                repo->max_stats = cgit_find_stats_period(value, NULL);
+        else if (!strcmp(name, "module-link"))
+                repo->module_link= xstrdup(value);
+        else if (!strcmp(name, "section"))
+                repo->section = xstrdup(value);
+        else if (!strcmp(name, "readme") && value != NULL) {
+                if (*value == '/')
+                        ctx.repo->readme = xstrdup(value);
+                else
+                        ctx.repo->readme = xstrdup(fmt("%s/%s", ctx.repo->path, value));
+        } else if (ctx.cfg.enable_filter_overrides) {
+                if (!strcmp(name, "about-filter"))
+                        repo->about_filter = new_filter(value, 0);
+                else if (!strcmp(name, "commit-filter"))
+                        repo->commit_filter = new_filter(value, 0);
+                else if (!strcmp(name, "source-filter"))
+                        repo->source_filter = new_filter(value, 1);
+        }
+}
+
 void config_cb(const char *name, const char *value)
 {
-        if (!strcmp(name, "root-title"))
+        if (!strcmp(name, "section") || !strcmp(name, "repo.group"))
+                ctx.cfg.section = xstrdup(value);
+        else if (!strcmp(name, "repo.url"))
+                ctx.repo = cgit_add_repo(value);
+        else if (ctx.repo && !strcmp(name, "repo.path"))
+                ctx.repo->path = trim_end(value, '/');
+        else if (ctx.repo && !prefixcmp(name, "repo."))
+                repo_config(ctx.repo, name + 5, value);
+        else if (!strcmp(name, "root-title"))
                 ctx.cfg.root_title = xstrdup(value);
@@ -82,2 +131,4 @@ void config_cb(const char *name, const char *value)
                 ctx.cfg.snapshots = cgit_parse_snapshots_mask(value);
+        else if (!strcmp(name, "enable-filter-overrides"))
+                ctx.cfg.enable_filter_overrides = atoi(value);
         else if (!strcmp(name, "enable-index-links"))
@@ -100,2 +151,4 @@ void config_cb(const char *name, const char *value)
                 ctx.cfg.cache_repo_ttl = atoi(value);
+        else if (!strcmp(name, "cache-scanrc-ttl"))
+                ctx.cfg.cache_scanrc_ttl = atoi(value);
         else if (!strcmp(name, "cache-static-ttl"))
@@ -118,2 +171,7 @@ void config_cb(const char *name, const char *value)
                 ctx.cfg.max_commit_count = atoi(value);
+        else if (!strcmp(name, "scan-path"))
+                if (!ctx.cfg.nocache && ctx.cfg.cache_size)
+                        process_cached_repolist(value);
+                else
+                        scan_tree(value, repo_config);
         else if (!strcmp(name, "source-filter"))
@@ -138,40 +196,3 @@ void config_cb(const char *name, const char *value)
                 add_mimetype(name + 9, value);
-        else if (!strcmp(name, "repo.group"))
-                ctx.cfg.repo_group = xstrdup(value);
-        else if (!strcmp(name, "repo.url"))
-                ctx.repo = cgit_add_repo(value);
-        else if (!strcmp(name, "repo.name"))
-                ctx.repo->name = xstrdup(value);
-        else if (ctx.repo && !strcmp(name, "repo.path"))
-                ctx.repo->path = trim_end(value, '/');
-        else if (ctx.repo && !strcmp(name, "repo.clone-url"))
-                ctx.repo->clone_url = xstrdup(value);
-        else if (ctx.repo && !strcmp(name, "repo.desc"))
-                ctx.repo->desc = xstrdup(value);
-        else if (ctx.repo && !strcmp(name, "repo.owner"))
-                ctx.repo->owner = xstrdup(value);
-        else if (ctx.repo && !strcmp(name, "repo.defbranch"))
-                ctx.repo->defbranch = xstrdup(value);
-        else if (ctx.repo && !strcmp(name, "repo.snapshots"))
-                ctx.repo->snapshots = ctx.cfg.snapshots & cgit_parse_snapshots_mask(value); /* XXX: &? */
-        else if (ctx.repo && !strcmp(name, "repo.enable-log-filecount"))
-                ctx.repo->enable_log_filecount = ctx.cfg.enable_log_filecount * atoi(value);
-        else if (ctx.repo && !strcmp(name, "repo.enable-log-linecount"))
-                ctx.repo->enable_log_linecount = ctx.cfg.enable_log_linecount * atoi(value);
-        else if (ctx.repo && !strcmp(name, "repo.max-stats"))
-                ctx.repo->max_stats = cgit_find_stats_period(value, NULL);
-        else if (ctx.repo && !strcmp(name, "repo.module-link"))
-                ctx.repo->module_link= xstrdup(value);
-        else if (ctx.repo && !strcmp(name, "repo.about-filter"))
-                ctx.repo->about_filter = new_filter(value, 0);
-        else if (ctx.repo && !strcmp(name, "repo.commit-filter"))
-                ctx.repo->commit_filter = new_filter(value, 0);
-        else if (ctx.repo && !strcmp(name, "repo.source-filter"))
-                ctx.repo->source_filter = new_filter(value, 1);
-        else if (ctx.repo && !strcmp(name, "repo.readme") && value != NULL) {
-                if (*value == '/')
-                        ctx.repo->readme = xstrdup(value);
-                else
-                        ctx.repo->readme = xstrdup(fmt("%s/%s", ctx.repo->path, value));
-        } else if (!strcmp(name, "include"))
+        else if (!strcmp(name, "include"))
                 parse_configfile(value, config_cb);
@@ -238,2 +259,3 @@ static void prepare_context(struct cgit_context *ctx)
         ctx->cfg.cache_root_ttl = 5;
+        ctx->cfg.cache_scanrc_ttl = 15;
         ctx->cfg.cache_static_ttl = -1;
@@ -255,2 +277,3 @@ static void prepare_context(struct cgit_context *ctx)
         ctx->cfg.script_name = CGIT_SCRIPT_NAME;
+        ctx->cfg.section = "";
         ctx->cfg.summary_branches = 10;
@@ -419,24 +442,147 @@ int cmp_repos(const void *a, const void *b)
 
-void print_repo(struct cgit_repo *repo)
+char *build_snapshot_setting(int bitmap)
 {
-        printf("repo.url=%s\n", repo->url);
-        printf("repo.name=%s\n", repo->name);
-        printf("repo.path=%s\n", repo->path);
+        const struct cgit_snapshot_format *f;
+        char *result = xstrdup("");
+        char *tmp;
+        int len;
+
+        for (f = cgit_snapshot_formats; f->suffix; f++) {
+                if (f->bit & bitmap) {
+                        tmp = result;
+                        result = xstrdup(fmt("%s%s ", tmp, f->suffix));
+                        free(tmp);
+                }
+        }
+        len = strlen(result);
+        if (len)
+                result[len - 1] = '\0';
+        return result;
+}
+
+char *get_first_line(char *txt)
+{
+        char *t = xstrdup(txt);
+        char *p = strchr(t, '\n');
+        if (p)
+                *p = '\0';
+        return t;
+}
+
+void print_repo(FILE *f, struct cgit_repo *repo)
+{
+        fprintf(f, "repo.url=%s\n", repo->url);
+        fprintf(f, "repo.name=%s\n", repo->name);
+        fprintf(f, "repo.path=%s\n", repo->path);
         if (repo->owner)
-                printf("repo.owner=%s\n", repo->owner);
-        if (repo->desc)
-                printf("repo.desc=%s\n", repo->desc);
+                fprintf(f, "repo.owner=%s\n", repo->owner);
+        if (repo->desc) {
+                char *tmp = get_first_line(repo->desc);
+                fprintf(f, "repo.desc=%s\n", tmp);
+                free(tmp);
+        }
         if (repo->readme)
-                printf("repo.readme=%s\n", repo->readme);
-        printf("\n");
+                fprintf(f, "repo.readme=%s\n", repo->readme);
+        if (repo->defbranch)
+                fprintf(f, "repo.defbranch=%s\n", repo->defbranch);
+        if (repo->module_link)
+                fprintf(f, "repo.module-link=%s\n", repo->module_link);
+        if (repo->section)
+                fprintf(f, "repo.section=%s\n", repo->section);
+        if (repo->clone_url)
+                fprintf(f, "repo.clone-url=%s\n", repo->clone_url);
+        fprintf(f, "repo.enable-log-filecount=%d\n",
+                repo->enable_log_filecount);
+        fprintf(f, "repo.enable-log-linecount=%d\n",
+                repo->enable_log_linecount);
+        if (repo->about_filter && repo->about_filter != ctx.cfg.about_filter)
+                fprintf(f, "repo.about-filter=%s\n", repo->about_filter->cmd);
+        if (repo->commit_filter && repo->commit_filter != ctx.cfg.commit_filter)
+                fprintf(f, "repo.commit-filter=%s\n", repo->commit_filter->cmd);
+        if (repo->source_filter && repo->source_filter != ctx.cfg.source_filter)
+                fprintf(f, "repo.source-filter=%s\n", repo->source_filter->cmd);
+        if (repo->snapshots != ctx.cfg.snapshots) {
+                char *tmp = build_snapshot_setting(repo->snapshots);
+                fprintf(f, "repo.snapshots=%s\n", tmp);
+                free(tmp);
+        }
+        if (repo->max_stats != ctx.cfg.max_stats)
+                fprintf(f, "repo.max-stats=%s\n",
+                        cgit_find_stats_periodname(repo->max_stats));
+        fprintf(f, "\n");
+}
+
+void print_repolist(FILE *f, struct cgit_repolist *list, int start)
+{
+        int i;
+
+        for(i = start; i < list->count; i++)
+                print_repo(f, &list->repos[i]);
 }
 
-void print_repolist(struct cgit_repolist *list)
+/* Scan 'path' for git repositories, save the resulting repolist in 'cached_rc'
+ * and return 0 on success.
+ */
+static int generate_cached_repolist(const char *path, const char *cached_rc)
 {
-        int i;
+        char *locked_rc;
+        int idx;
+        FILE *f;
+
+        locked_rc = xstrdup(fmt("%s.lock", cached_rc));
+        f = fopen(locked_rc, "wx");
+        if (!f) {
+                /* Inform about the error unless the lockfile already existed,
+                 * since that only means we've got concurrent requests.
+                 */
+                if (errno != EEXIST)
+                        fprintf(stderr, "[cgit] Error opening %s: %s (%d)\n",
+                                locked_rc, strerror(errno), errno);
+                return errno;
+        }
+        idx = cgit_repolist.count;
+        scan_tree(path, repo_config);
+        print_repolist(f, &cgit_repolist, idx);
+        if (rename(locked_rc, cached_rc))
+                fprintf(stderr, "[cgit] Error renaming %s to %s: %s (%d)\n",
+                        locked_rc, cached_rc, strerror(errno), errno);
+        fclose(f);
+        return 0;
+}
+
+static void process_cached_repolist(const char *path)
+{
+        struct stat st;
+        char *cached_rc;
+        time_t age;
 
-        for(i = 0; i < list->count; i++)
-                print_repo(&list->repos[i]);
+        cached_rc = xstrdup(fmt("%s/rc-%8x", ctx.cfg.cache_root,
+                hash_str(path)));
+
+        if (stat(cached_rc, &st)) {
+                /* Nothing is cached, we need to scan without forking. And
+                 * if we fail to generate a cached repolist, we need to
+                 * invoke scan_tree manually.
+                 */
+                if (generate_cached_repolist(path, cached_rc))
+                        scan_tree(path, repo_config);
+                return;
 }
 
+        parse_configfile(cached_rc, config_cb);
+
+        /* If the cached configfile hasn't expired, lets exit now */
+        age = time(NULL) - st.st_mtime;
+        if (age <= (ctx.cfg.cache_scanrc_ttl * 60))
+                return;
+
+        /* The cached repolist has been parsed, but it was old. So lets
+         * rescan the specified path and generate a new cached repolist
+         * in a child-process to avoid latency for the current request.
+         */
+        if (fork())
+                return;
+
+        exit(generate_cached_repolist(path, cached_rc));
+}
 
@@ -477,5 +623,16 @@ static void cgit_parse_args(int argc, const char **argv)
                 }
-                if (!strncmp(argv[i], "--scan-tree=", 12)) {
+                if (!strncmp(argv[i], "--scan-tree=", 12) ||
+                    !strncmp(argv[i], "--scan-path=", 12)) {
+                        /* HACK: the global snapshot bitmask defines the
+                         * set of allowed snapshot formats, but the config
+                         * file hasn't been parsed yet so the mask is
+                         * currently 0. By setting all bits high before
+                         * scanning we make sure that any in-repo cgitrc
+                         * snapshot setting is respected by scan_tree().
+                         * BTW: we assume that there'll never be more than
+                         * 255 different snapshot formats supported by cgit...
+                         */
+                        ctx.cfg.snapshots = 0xFF;
                         scan++;
-                        scan_tree(argv[i] + 12);
+                        scan_tree(argv[i] + 12, repo_config);
                 }
@@ -485,3 +642,3 @@ static void cgit_parse_args(int argc, const char **argv)
                         sizeof(struct cgit_repo), cmp_repos);
-                print_repolist(&cgit_repolist);
+                print_repolist(stdout, &cgit_repolist, 0);
                 exit(0);
diff --git a/cgit.css b/cgit.css
index ebf3322..c47ebc9 100644
--- a/cgit.css
+++ b/cgit.css
@@ -431,3 +431,3 @@ table.diff td div.del {
 
-table.list td.repogroup {
+table.list td.reposection {
         font-style: italic;
diff --git a/cgit.h b/cgit.h
index a20679a..6c6c460 100644
--- a/cgit.h
+++ b/cgit.h
@@ -67,5 +67,5 @@ struct cgit_repo {
         char *defbranch;
-        char *group;
         char *module_link;
         char *readme;
+        char *section;
         char *clone_url;
@@ -81,2 +81,5 @@ struct cgit_repo {
 
+typedef void (*repo_config_fn)(struct cgit_repo *repo, const char *name,
+              const char *value);
+
 struct cgit_repolist {
@@ -158,3 +161,2 @@ struct cgit_config {
         char *module_link;
-        char *repo_group;
         char *robots;
@@ -164,2 +166,3 @@ struct cgit_config {
         char *script_name;
+        char *section;
         char *virtual_root;
@@ -170,4 +173,6 @@ struct cgit_config {
         int cache_root_ttl;
+        int cache_scanrc_ttl;
         int cache_static_ttl;
         int embedded;
+        int enable_filter_overrides;
         int enable_index_links;
diff --git a/cgitrc.5.txt b/cgitrc.5.txt
index 3b16db9..4dc383d 100644
--- a/cgitrc.5.txt
+++ b/cgitrc.5.txt
@@ -56,2 +56,6 @@ cache-root-ttl::
 
+cache-scanrc-ttl::
+        Number which specifies the time-to-live, in minutes, for the result
+        of scanning a path for git repositories. Default value: "15".
+
 cache-size::
@@ -86,2 +90,6 @@ embedded::
         
+enable-filter-overrides::
+        Flag which, when set to "1", allows all filter settings to be
+        overridden in repository-specific cgitrc files. Default value: none.
+
 enable-index-links::
@@ -202,4 +210,4 @@ renamelimit::
 repo.group::
-        A value for the current repository group, which all repositories
-        specified after this setting will inherit. Default value: none.
+        Legacy alias for "section". This option is deprecated and will not be
+        supported in cgit-1.0.
 
@@ -222,2 +230,12 @@ root-title::
 
+scan-path::
+        A path which will be scanned for repositories. If caching is enabled,
+        the result will be cached as a cgitrc include-file in the cache
+        directory. Default value: none. See also: cache-scanrc-ttl.
+
+section::
+        The name of the current repository section - all repositories defined
+        after this option will inherit the current section name. Default value:
+        none.
+
 snapshots::
@@ -258,3 +276,4 @@ REPOSITORY SETTINGS
 repo.about-filter::
-        Override the default about-filter. Default value: <about-filter>.
+        Override the default about-filter. Default value: none. See also:
+        "enable-filter-overrides".
 
@@ -265,3 +284,4 @@ repo.clone-url::
 repo.commit-filter::
-        Override the default commit-filter. Default value: <commit-filter>.
+        Override the default commit-filter. Default value: none. See also:
+        "enable-filter-overrides".
 
@@ -307,4 +327,9 @@ repo.snapshots::
 
+repo.section::
+        Override the current section name for this repository. Default value:
+        none.
+
 repo.source-filter::
-        Override the default source-filter. Default value: <source-filter>.
+        Override the default source-filter. Default value: none. See also:
+        "enable-filter-overrides".
 
@@ -315,2 +340,15 @@ repo.url::
 
+REPOSITORY-SPECIFIC CGITRC FILE
+-------------------------------
+When the option "scan-path" is used to auto-discover git repositories, cgit
+will try to parse the file "cgitrc" within any found repository. Such a
+repo-specific config file may contain any of the repo-specific options
+described above, except "repo.url" and "repo.path". Additionally, the "filter"
+options are only acknowledged in repo-specific config files when
+"enable-filter-overrides" is set to "1".
+
+Note: the "repo." prefix is dropped from the option names in repo-specific
+config files, e.g. "repo.desc" becomes "desc".
+
+
 EXAMPLE CGITRC FILE
diff --git a/scan-tree.c b/scan-tree.c
index 4da21a4..dbca797 100644
--- a/scan-tree.c
+++ b/scan-tree.c
@@ -1,2 +1,3 @@
 #include "cgit.h"
+#include "configfile.h"
 #include "html.h"
@@ -37,5 +38,12 @@ static int is_git_dir(const char *path)
 
-static void add_repo(const char *base, const char *path)
-{
         struct cgit_repo *repo;
+repo_config_fn config_fn;
+
+static void repo_config(const char *name, const char *value)
+{
+        config_fn(repo, name, value);
+}
+
+static void add_repo(const char *base, const char *path, repo_config_fn fn)
+{
         struct stat st;
@@ -78,5 +86,11 @@ static void add_repo(const char *base, const char *path)
                 repo->readme = "README.html";
+
+        p = fmt("%s/cgitrc", path);
+        if (!stat(p, &st)) {
+                config_fn = fn;
+                parse_configfile(xstrdup(p), &repo_config);
+        }
 }
 
-static void scan_path(const char *base, const char *path)
+static void scan_path(const char *base, const char *path, repo_config_fn fn)
 {
@@ -88,3 +102,7 @@ static void scan_path(const char *base, const char *path)
         if (is_git_dir(path)) {
-                add_repo(base, path);
+                add_repo(base, path, fn);
+                return;
+        }
+        if (is_git_dir(fmt("%s/.git", path))) {
+                add_repo(base, fmt("%s/.git", path), fn);
                 return;
@@ -118,3 +136,3 @@ static void scan_path(const char *base, const char *path)
                 if (S_ISDIR(st.st_mode))
-                        scan_path(base, buf);
+                        scan_path(base, buf, fn);
                 free(buf);
@@ -124,5 +142,5 @@ static void scan_path(const char *base, const char *path)
 
-void scan_tree(const char *path)
+void scan_tree(const char *path, repo_config_fn fn)
 {
-        scan_path(path, path);
+        scan_path(path, path, fn);
 }
diff --git a/scan-tree.h b/scan-tree.h
index b103b16..11539f4 100644
--- a/scan-tree.h
+++ b/scan-tree.h
@@ -2,2 +2,2 @@
 
-extern void scan_tree(const char *path);
+extern void scan_tree(const char *path, repo_config_fn fn);
diff --git a/shared.c b/shared.c
index 4cb9573..d7b2d5a 100644
--- a/shared.c
+++ b/shared.c
@@ -50,2 +50,3 @@ struct cgit_repo *cgit_add_repo(const char *url)
         ret = &cgit_repolist.repos[cgit_repolist.count-1];
+        memset(ret, 0, sizeof(struct cgit_repo));
         ret->url = trim_end(url, '/');
@@ -55,3 +56,3 @@ struct cgit_repo *cgit_add_repo(const char *url)
         ret->owner = NULL;
-        ret->group = ctx.cfg.repo_group;
+        ret->section = ctx.cfg.section;
         ret->defbranch = "master";
diff --git a/ui-repolist.c b/ui-repolist.c
index 7c7aa9b..3ef2e99 100644
--- a/ui-repolist.c
+++ b/ui-repolist.c
@@ -138,2 +138,14 @@ static int cmp(const char *s1, const char *s2)
 
+static int sort_section(const void *a, const void *b)
+{
+        const struct cgit_repo *r1 = a;
+        const struct cgit_repo *r2 = b;
+        int result;
+
+        result = cmp(r1->section, r2->section);
+        if (!result)
+                result = cmp(r1->name, r2->name);
+        return result;
+}
+
 static int sort_name(const void *a, const void *b)
@@ -180,2 +192,3 @@ struct sortcolumn {
 struct sortcolumn sortcolumn[] = {
+        {"section", sort_section},
         {"name", sort_name},
@@ -205,3 +218,4 @@ void cgit_print_repolist()
         int i, columns = 4, hits = 0, header = 0;
-        char *last_group = NULL;
+        char *last_section = NULL;
+        char *section;
         int sorted = 0;
@@ -221,2 +235,4 @@ void cgit_print_repolist()
                 sorted = sort_repolist(ctx.qry.sort);
+        else
+                sort_repolist("section");
 
@@ -234,15 +250,18 @@ void cgit_print_repolist()
                         print_header(columns);
+                section = ctx.repo->section;
+                if (section && !strcmp(section, ""))
+                        section = NULL;
                 if (!sorted &&
-                    ((last_group == NULL && ctx.repo->group != NULL) ||
-                    (last_group != NULL && ctx.repo->group == NULL) ||
-                    (last_group != NULL && ctx.repo->group != NULL &&
-                     strcmp(ctx.repo->group, last_group)))) {
-                        htmlf("<tr class='nohover'><td colspan='%d' class='repogroup'>",
+                    ((last_section == NULL && section != NULL) ||
+                    (last_section != NULL && section == NULL) ||
+                    (last_section != NULL && section != NULL &&
+                     strcmp(section, last_section)))) {
+                        htmlf("<tr class='nohover'><td colspan='%d' class='reposection'>",
                               columns);
-                        html_txt(ctx.repo->group);
+                        html_txt(section);
                         html("</td></tr>");
-                        last_group = ctx.repo->group;
+                        last_section = section;
                 }
                 htmlf("<tr><td class='%s'>",
-                      !sorted && ctx.repo->group ? "sublevel-repo" : "toplevel-repo");
+                      !sorted && section ? "sublevel-repo" : "toplevel-repo");
                 cgit_summary_link(ctx.repo->name, ctx.repo->name, NULL, NULL);
diff --git a/ui-stats.c b/ui-stats.c
index 9fc06d3..bdaf9cc 100644
--- a/ui-stats.c
+++ b/ui-stats.c
@@ -156,2 +156,10 @@ int cgit_find_stats_period(const char *expr, struct cgit_period **period)
 
+const char *cgit_find_stats_periodname(int idx)
+{
+        if (idx > 0 && idx < 4)
+                return periods[idx - 1].name;
+        else
+                return "";
+}
+
 static void add_commit(struct string_list *authors, struct commit *commit,
diff --git a/ui-stats.h b/ui-stats.h
index 4f13dba..f0761ba 100644
--- a/ui-stats.h
+++ b/ui-stats.h
@@ -23,2 +23,3 @@ struct cgit_period {
 extern int cgit_find_stats_period(const char *expr, struct cgit_period **period);
+extern const char *cgit_find_stats_periodname(int idx);