1 files changed, 12 insertions, 2 deletions

diff --git a/ui-snapshot.c b/ui-snapshot.c
index 9c4d086..76457d6 100644
--- a/ui-snapshot.c
+++ b/ui-snapshot.c
@@ -117,72 +117,82 @@ static int make_snapshot(const struct cgit_snapshot_format *format,
 char *dwim_filename = NULL;
 const char *dwim_refname = NULL;
 
 static int ref_cb(const char *refname, const unsigned char *sha1, int flags,
 		  void *cb_data)
 {
 	const char *r = refname;
 	while (r && *r) {
 		fprintf(stderr, "  cmp %s with %s:", dwim_filename, r);
 		if (!strcmp(dwim_filename, r)) {
 			fprintf(stderr, "MATCH!\n");
 			dwim_refname = refname;
 			return 1;
 		}
 		fprintf(stderr, "no match\n");
 		if (isdigit(*r))
 			break;
 		r++;
 	}
 	return 0;
 }
 
 /* Try to guess the requested revision by combining repo name and tag name
  * and comparing this to the requested snapshot name. E.g. the requested
  * snapshot is "cgit-0.7.2.tar.gz" while repo name is "cgit" and tag name
  * is "v0.7.2". First, the reponame is stripped off, leaving "-0.7.2.tar.gz".
  * Next, any '-' and '_' characters are stripped, leaving "0.7.2.tar.gz".
  * Finally, the requested format suffix is removed and we end up with "0.7.2".
  * Then we test each tag against this dwimmed filename, and for each tag
  * we even try to remove any leading characters which are non-digits. I.e.
  * we first compare with "v0.7.2", then with "0.7.2" and we've got a match.
  */
 static const char *get_ref_from_filename(const char *url, const char *filename,
 					 const struct cgit_snapshot_format *fmt)
 {
 	const char *reponame = cgit_repobasename(url);
 	fprintf(stderr, "reponame=%s, filename=%s\n", reponame, filename);
 	if (prefixcmp(filename, reponame))
 		return NULL;
 	filename += strlen(reponame);
 	while (filename && (*filename == '-' || *filename == '_'))
 		filename++;
 	dwim_filename = xstrdup(filename);
 	dwim_filename[strlen(filename) - strlen(fmt->suffix)] = '\0';
 	for_each_tag_ref(ref_cb, NULL);
 	return dwim_refname;
 }
 
-void cgit_print_snapshot(const char *head, const char *hex, const char *prefix,
+void cgit_print_snapshot(const char *head, const char *hex,
 			 const char *filename, int snapshots, int dwim)
 {
 	const struct cgit_snapshot_format* f;
+	char *prefix = NULL;
 
 	f = get_format(filename);
 	if (!f) {
 		ctx.page.mimetype = "text/html";
 		cgit_print_http_headers(&ctx);
 		cgit_print_docstart(&ctx);
 		cgit_print_pageheader(&ctx);
 		cgit_print_error(fmt("Unsupported snapshot format: %s", filename));
 		cgit_print_docend();
 		return;
 	}
 
-	if (!hex && dwim)
+	if (!hex && dwim) {
 		hex = get_ref_from_filename(ctx.repo->url, filename, f);
+		if (hex != NULL) {
+			prefix = xstrdup(filename);
+			prefix[strlen(filename) - strlen(f->suffix)] = '\0';
+		}
+	}
 
 	if (!hex)
 		hex = head;
 
+	if (!prefix)
+		prefix = xstrdup(cgit_repobasename(ctx.repo->url));
+
 	make_snapshot(f, hex, prefix, filename);
+	free(prefix);
 }