add support for snapshot tarballs

- reworked cgit_print_snapshot to use a list of supported archivers and pick
	one for the suffix supplied
- moved printing of snaphot links into ui-snapshot and make it iterate through
	the said list

1 files changed, 34 insertions, 13 deletions

diff --git a/ui-snapshot.c b/ui-snapshot.c
index 2257d6b..eb5f1cd 100644
--- a/ui-snapshot.c
+++ b/ui-snapshot.c
@@ -8,9 +8,26 @@
 
 #include "cgit.h"
 
-static void cgit_print_zip(struct cacheitem *item, const char *hex, 
+static const struct snapshot_archive_t {
+    	const char *suffix;
+	const char *mimetype;
+	write_archive_fn_t write_func;
+}	snapshot_archives[] = {
+	{ ".zip", "application/x-zip", write_zip_archive },
+	{ ".tar.gz", "application/x-gzip", write_tar_archive }
+};
+
+void cgit_print_snapshot(struct cacheitem *item, const char *hex, 
 			   const char *prefix, const char *filename)
 {
+	int fnl = strlen(filename);
+	int f;
+    	for(f=0;f<(sizeof(snapshot_archives)/sizeof(*snapshot_archives));++f) {
+		const struct snapshot_archive_t* sat = &snapshot_archives[f];
+		int sl = strlen(sat->suffix);
+		if(fnl<sl || strcmp(&filename[fnl-sl],sat->suffix))
+			continue;
+
 	struct archiver_args args;
 	struct commit *commit;
 	unsigned char sha1[20];
@@ -23,25 +40,29 @@ static void cgit_print_zip(struct cacheitem *item, const char *hex,
 
 	if (!commit) {
 		cgit_print_error(fmt("Not a commit reference: %s", hex));
-		return;
+			return;;
 	}
 
 	memset(&args, 0, sizeof(args));
 	args.base = fmt("%s/", prefix);
 	args.tree = commit->tree;
 	
-	cgit_print_snapshot_start("application/x-zip", filename, item);
-	write_zip_archive(&args);
+		cgit_print_snapshot_start(sat->mimetype, filename, item);
+		(*sat->write_func)(&args);
+		return;
+	}
+	cgit_print_error(fmt("Unsupported snapshot format: %s", filename));
 }
 
-
-void cgit_print_snapshot(struct cacheitem *item, const char *hex, 
-			 const char *format, const char *prefix,
-			 const char *filename)
+void cgit_print_snapshot_links(const char *repo,const char *hex)
 {
-	if (!strcmp(format, "zip"))
-		cgit_print_zip(item, hex, prefix, filename);
-	else
-		cgit_print_error(fmt("Unsupported snapshot format: %s", 
-				     format));
+    	char *filename;
+	int f;
+    	for(f=0;f<(sizeof(snapshot_archives)/sizeof(*snapshot_archives));++f) {
+		const struct snapshot_archive_t* sat = &snapshot_archives[f];
+		filename = fmt("%s-%s%s",repo,hex,sat->suffix);
+		htmlf("<a href='%s'>%s</a><br/>",
+			cgit_pageurl(repo,"snapshot",
+			    fmt("id=%s&amp;name=%s",hex,filename)), filename);
+	}
 }