3 files changed, 39 insertions, 3 deletions
diff --git a/cgit.c b/cgit.c
index c82587b..e09c86e 100644
--- a/cgit.c
+++ b/cgit.c
@@ -154,6 +154,8 @@ static void querystring_cb(const char *name, const char *value)
 		ctx.qry.name = xstrdup(value);
 	} else if (!strcmp(name, "mimetype")) {
 		ctx.qry.mimetype = xstrdup(value);
+	} else if (!strcmp(name, "s")){
+		ctx.qry.sort = xstrdup(value);
 	}
 }
 
diff --git a/cgit.h b/cgit.h
index 91db98a..ea90833 100644
--- a/cgit.h
+++ b/cgit.h
@@ -121,6 +121,7 @@ struct cgit_query {
 	char *url;
 	int   ofs;
 	int nohead;
+	char *sort;
 };
 
 struct cgit_config {
diff --git a/ui-repolist.c b/ui-repolist.c
index c23232c..312a7ee 100644
--- a/ui-repolist.c
+++ b/ui-repolist.c
@@ -75,7 +75,7 @@ void print_header(int columns)
 	     "<th class='left'>Name</th>"
 	     "<th class='left'>Description</th>"
 	     "<th class='left'>Owner</th>"
-	     "<th class='left'>Idle</th>");
+	     "<th class='left'><a href=\"?s=1\">Idle</a></th>");
 	if (ctx.cfg.enable_index_links)
 		html("<th class='left'>Links</th>");
 	html("</tr>\n");
@@ -92,6 +92,35 @@ void print_pager(int items, int pagelen, char *search)
 	html("</div>");
 }
 
+static int cgit_reposort_modtime(const void *a, const void *b)
+{
+	const struct cgit_repo *r1 = a;
+	const struct cgit_repo *r2 = b;
+	char *path;
+	struct stat s;
+	time_t t1, t2;
+	path = fmt("%s/%s", r1->path, ctx.cfg.agefile);
+	if (stat(path, &s) == 0) {
+		t1 = read_agefile(path);
+	} else {
+		path = fmt("%s/refs/heads/%s", r1->path, r1->defbranch);
+		if (stat(path, &s) != 0)
+			return 0;
+		t1 =s.st_mtime;
+	}
+
+	path = fmt("%s/%s", r2->path, ctx.cfg.agefile);
+	if (stat(path, &s) == 0) {
+		t2 = read_agefile(path);
+	} else {
+		path = fmt("%s/refs/heads/%s", r2->path, r2->defbranch);
+		if (stat(path, &s) != 0)
+			return 0;
+		t2 =s.st_mtime;
+	}
+	return t2-t1;
+}
+
 void cgit_print_repolist()
 {
 	int i, columns = 4, hits = 0, header = 0;
@@ -108,6 +137,9 @@ void cgit_print_repolist()
 	if (ctx.cfg.index_header)
 		html_include(ctx.cfg.index_header);
 
+	if(ctx.qry.sort)
+		qsort(cgit_repolist.repos,cgit_repolist.count,sizeof(struct cgit_repo),cgit_reposort_modtime);
+
 	html("<table summary='repository list' class='list nowrap'>");
 	for (i=0; i<cgit_repolist.count; i++) {
 		ctx.repo = &cgit_repolist.repos[i];
@@ -120,10 +152,11 @@ void cgit_print_repolist()
 			continue;
 		if (!header++)
 			print_header(columns);
-		if ((last_group == NULL && ctx.repo->group != NULL) ||
+		if (!ctx.qry.sort &&
+		    ((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))) {
+		     strcmp(ctx.repo->group, last_group)))) {
 			htmlf("<tr class='nohover'><td colspan='%d' class='repogroup'>",
 			      columns);
 			html_txt(ctx.repo->group);