Refactor snapshot support

The snapshot support needs to be split between output- and config-related
functions to get the layering between shared.c and ui-*.c right. There
is also some codestyle-issues which needs fixing to make the snapshot
functions more similar to the rest of the cgit code.

Signed-off-by: Lars Hjemli <hjemli@gmail.com>

ui-shared.c

@@ -573,4 +573,19 @@ void cgit_print_filemode(unsigned short mode)
 	html_fileperm(mode);
 }
 
-/* vim:set sw=8: */
+void cgit_print_snapshot_links(const char *repo, const char *head,
+			       const char *hex, int snapshots)
+{
+	const struct cgit_snapshot_format* f;
+    	char *filename;
+
+	for (f = cgit_snapshot_formats; f->suffix; f++) {
+		if (!(snapshots & f->bit))
+			continue;
+		filename = fmt("%s-%s%s", cgit_repobasename(repo), hex,
+			       f->suffix);
+		cgit_snapshot_link(filename, NULL, NULL, (char *)head,
+				   (char *)hex, filename);
+		html("<br/>");
+	}
+}