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-rw-r--r--ui-refs.c24
-rw-r--r--ui-shared.c26
-rw-r--r--ui-shared.h2
3 files changed, 32 insertions, 20 deletions
diff --git a/ui-refs.c b/ui-refs.c
index 5b4530e..75f2789 100644
--- a/ui-refs.c
+++ b/ui-refs.c
@@ -93,34 +93,28 @@ static void print_tag_header(void)
static void print_tag_downloads(const struct cgit_repo *repo, const char *ref)
{
const struct cgit_snapshot_format* f;
- struct strbuf filename = STRBUF_INIT;
const char *basename;
- int free_ref = 0;
+ struct strbuf filename = STRBUF_INIT;
+ size_t prefixlen;
if (!ref || strlen(ref) < 1)
return;
basename = cgit_repobasename(repo->url);
- if (!starts_with(ref, basename)) {
- if ((ref[0] == 'v' || ref[0] == 'V') && isdigit(ref[1]))
- ref++;
- if (isdigit(ref[0])) {
- ref = fmtalloc("%s-%s", basename, ref);
- free_ref = 1;
- }
- }
-
+ if (starts_with(ref, basename))
+ strbuf_addstr(&filename, ref);
+ else
+ cgit_compose_snapshot_prefix(&filename, basename, ref);
+ prefixlen = filename.len;
for (f = cgit_snapshot_formats; f->suffix; f++) {
if (!(repo->snapshots & f->bit))
continue;
- strbuf_reset(&filename);
- strbuf_addf(&filename, "%s%s", ref, f->suffix);
+ strbuf_setlen(&filename, prefixlen);
+ strbuf_addstr(&filename, f->suffix);
cgit_snapshot_link(filename.buf, NULL, NULL, NULL, NULL, filename.buf);
html("&nbsp;&nbsp;");
}
- if (free_ref)
- free((char *)ref);
strbuf_release(&filename);
}
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))
diff --git a/ui-shared.h b/ui-shared.h
index b457c97..87799f1 100644
--- a/ui-shared.h
+++ b/ui-shared.h
@@ -71,6 +71,8 @@ __attribute__((format (printf,3,4)))
extern void cgit_print_error_page(int code, const char *msg, const char *fmt, ...);
extern void cgit_print_pageheader(void);
extern void cgit_print_filemode(unsigned short mode);
+extern void cgit_compose_snapshot_prefix(struct strbuf *filename,
+ const char *base, const char *ref);
extern void cgit_print_snapshot_links(const char *repo, const char *head,
const char *hex, int snapshots);
extern void cgit_add_hidden_formfields(int incl_head, int incl_search,