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Diffstat (limited to 'ui-shared.c')
-rw-r--r--ui-shared.c26
1 files changed, 21 insertions, 5 deletions
diff --git a/ui-shared.c b/ui-shared.c
index 562fa0e..b1a6c46 100644
--- a/ui-shared.c
+++ b/ui-shared.c
@@ -1069,18 +1069,34 @@ void cgit_print_filemode(unsigned short mode)
html_fileperm(mode);
}
+void cgit_compose_snapshot_prefix(struct strbuf *filename, const char *base,
+ const char *ref)
+{
+ unsigned char sha1[20];
+
+ /*
+ * Prettify snapshot names by stripping leading "v" or "V" if the tag
+ * name starts with {v,V}[0-9] and the prettify mapping is injective,
+ * i.e. each stripped tag can be inverted without ambiguities.
+ */
+ if (get_sha1(fmt("refs/tags/%s", ref), sha1) == 0 &&
+ (ref[0] == 'v' || ref[0] == 'V') && isdigit(ref[1]) &&
+ ((get_sha1(fmt("refs/tags/%s", ref + 1), sha1) == 0) +
+ (get_sha1(fmt("refs/tags/v%s", ref + 1), sha1) == 0) +
+ (get_sha1(fmt("refs/tags/V%s", ref + 1), sha1) == 0) == 1))
+ ref++;
+
+ strbuf_addf(filename, "%s-%s", base, ref);
+}
+
void cgit_print_snapshot_links(const char *repo, const char *head,
const char *hex, int snapshots)
{
const struct cgit_snapshot_format* f;
struct strbuf filename = STRBUF_INIT;
size_t prefixlen;
- unsigned char sha1[20];
- if (get_sha1(fmt("refs/tags/%s", hex), sha1) == 0 &&
- (hex[0] == 'v' || hex[0] == 'V') && isdigit(hex[1]))
- hex++;
- strbuf_addf(&filename, "%s-%s", cgit_repobasename(repo), hex);
+ cgit_compose_snapshot_prefix(&filename, cgit_repobasename(repo), hex);
prefixlen = filename.len;
for (f = cgit_snapshot_formats; f->suffix; f++) {
if (!(snapshots & f->bit))