ui-refs.c: show download links for all tags referring to commit objects

The snapshot function has only been linked to from the commit page while
users often would want to download a certain release. With this patch,
direct download links will now be printed for each tagged release on the
repo summary page.

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

1 files changed, 34 insertions, 3 deletions

diff --git a/ui-refs.c b/ui-refs.c
index 32e0429..0805fc8 100644
--- a/ui-refs.c
+++ b/ui-refs.c
@@ -49,99 +49,130 @@ static int cmp_tag_age(const void *a, const void *b)
 
 	return cmp_age(r1->tag->tagger_date, r2->tag->tagger_date);
 }
 
 static int print_branch(struct refinfo *ref)
 {
 	struct commitinfo *info = ref->commit;
 	char *name = (char *)ref->refname;
 
 	if (!info)
 		return 1;
 	html("<tr><td>");
 	cgit_log_link(name, NULL, NULL, name, NULL, NULL, 0, NULL, NULL);
 	html("</td><td>");
 
 	if (ref->object->type == OBJ_COMMIT) {
 		cgit_commit_link(info->subject, NULL, NULL, name, NULL);
 		html("</td><td>");
 		html_txt(info->author);
 		html("</td><td colspan='2'>");
 		cgit_print_age(info->commit->date, -1, NULL);
 	} else {
 		html("</td><td></td><td>");
 		cgit_object_link(ref->object);
 	}
 	html("</td></tr>\n");
 	return 0;
 }
 
 static void print_tag_header()
 {
 	html("<tr class='nohover'><th class='left'>Tag</th>"
-	     "<th class='left'>Reference</th>"
+	     "<th class='left'>Download</th>"
 	     "<th class='left'>Author</th>"
 	     "<th class='left' colspan='2'>Age</th></tr>\n");
 	header = 1;
 }
 
+static void print_tag_downloads(const struct cgit_repo *repo, const char *ref)
+{
+	const struct cgit_snapshot_format* f;
+    	char *filename;
+	const char *basename;
+
+	if (!ref || strlen(ref) < 2)
+		return;
+
+	basename = cgit_repobasename(repo->url);
+	if (prefixcmp(ref, basename) != 0) {
+		if ((ref[0] == 'v' || ref[0] == 'V') && isdigit(ref[1]))
+			ref++;
+		if (isdigit(ref[0]))
+			ref = xstrdup(fmt("%s-%s", basename, ref));
+	}
+
+	for (f = cgit_snapshot_formats; f->suffix; f++) {
+		if (!(repo->snapshots & f->bit))
+			continue;
+		filename = fmt("%s%s", ref, f->suffix);
+		cgit_snapshot_link(filename, NULL, NULL, NULL, NULL, filename);
+		html("&nbsp;&nbsp;");
+	}
+}
 static int print_tag(struct refinfo *ref)
 {
 	struct tag *tag;
 	struct taginfo *info;
 	char *name = (char *)ref->refname;
 
 	if (ref->object->type == OBJ_TAG) {
 		tag = (struct tag *)ref->object;
 		info = ref->tag;
 		if (!tag || !info)
 			return 1;
 		html("<tr><td>");
 		cgit_tag_link(name, NULL, NULL, ctx.qry.head, name);
 		html("</td><td>");
-		cgit_object_link(tag->tagged);
+		if (ctx.repo->snapshots && (tag->tagged->type == OBJ_COMMIT))
+			print_tag_downloads(ctx.repo, name);
+		else
+			cgit_object_link(tag->tagged);
 		html("</td><td>");
 		if (info->tagger)
 			html(info->tagger);
 		html("</td><td colspan='2'>");
 		if (info->tagger_date > 0)
 			cgit_print_age(info->tagger_date, -1, NULL);
 		html("</td></tr>\n");
 	} else {
 		if (!header)
 			print_tag_header();
 		html("<tr><td>");
 		html_txt(name);
 		html("</td><td>");
-		cgit_object_link(ref->object);
+		if (ctx.repo->snapshots && (tag->tagged->type == OBJ_COMMIT))
+			print_tag_downloads(ctx.repo, name);
+		else
+			cgit_object_link(ref->object);
 		html("</td></tr>\n");
 	}
 	return 0;
 }
 
 static void print_refs_link(char *path)
 {
 	html("<tr class='nohover'><td colspan='4'>");
 	cgit_refs_link("[...]", NULL, NULL, ctx.qry.head, NULL, path);
 	html("</td></tr>");
 }
 
 void cgit_print_branches(int maxcount)
 {
 	struct reflist list;
 	int i;
 
 	html("<tr class='nohover'><th class='left'>Branch</th>"
 	     "<th class='left'>Commit message</th>"
 	     "<th class='left'>Author</th>"
 	     "<th class='left' colspan='2'>Age</th></tr>\n");
 
 	list.refs = NULL;
 	list.alloc = list.count = 0;
 	for_each_branch_ref(cgit_refs_cb, &list);
 
 	if (maxcount == 0 || maxcount > list.count)
 		maxcount = list.count;
 
 	if (maxcount < list.count) {
 		qsort(list.refs, list.count, sizeof(*list.refs), cmp_branch_age);
 		qsort(list.refs, maxcount, sizeof(*list.refs), cmp_ref_name);