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-rw-r--r--ui-snapshot.c94
1 files changed, 49 insertions, 45 deletions
diff --git a/ui-snapshot.c b/ui-snapshot.c
index 9c4d086..6f09151 100644
--- a/ui-snapshot.c
+++ b/ui-snapshot.c
@@ -93,96 +93,100 @@ static int make_snapshot(const struct cgit_snapshot_format *format,
return 1;
}
commit = lookup_commit_reference(sha1);
if(!commit) {
cgit_print_error(fmt("Not a commit reference: %s", hex));
return 1;
}
memset(&args, 0, sizeof(args));
if (prefix) {
args.base = fmt("%s/", prefix);
args.baselen = strlen(prefix) + 1;
} else {
args.base = "";
args.baselen = 0;
}
args.tree = commit->tree;
args.time = commit->date;
ctx.page.mimetype = xstrdup(format->mimetype);
ctx.page.filename = xstrdup(filename);
cgit_print_http_headers(&ctx);
format->write_func(&args);
return 0;
}
-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.
+/* Try to guess the requested revision from the requested snapshot name.
+ * First the format extension is stripped, e.g. "cgit-0.7.2.tar.gz" become
+ * "cgit-0.7.2". If this is a valid commit object name we've got a winner.
+ * Otherwise, if the snapshot name has a prefix matching the result from
+ * repo_basename(), we strip the basename and any following '-' and '_'
+ * characters ("cgit-0.7.2" -> "0.7.2") and check the resulting name once
+ * more. If this still isn't a valid commit object name, we check if pre-
+ * pending a 'v' to the remaining snapshot name ("0.7.2" -> "v0.7.2") gives
+ * us something valid.
*/
static const char *get_ref_from_filename(const char *url, const char *filename,
- const struct cgit_snapshot_format *fmt)
+ const struct cgit_snapshot_format *format)
{
- 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;
+ const char *reponame;
+ unsigned char sha1[20];
+ char *snapshot;
+
+ snapshot = xstrdup(filename);
+ snapshot[strlen(snapshot) - strlen(format->suffix)] = '\0';
+ fprintf(stderr, "snapshot=%s\n", snapshot);
+
+ if (get_sha1(snapshot, sha1) == 0)
+ return snapshot;
+
+ reponame = cgit_repobasename(url);
+ fprintf(stderr, "reponame=%s\n", reponame);
+ if (prefixcmp(snapshot, reponame) == 0) {
+ snapshot += strlen(reponame);
+ while (snapshot && (*snapshot == '-' || *snapshot == '_'))
+ snapshot++;
+ }
+
+ if (get_sha1(snapshot, sha1) == 0)
+ return snapshot;
+
+ snapshot = fmt("v%s", snapshot);
+ if (get_sha1(snapshot, sha1) == 0)
+ return snapshot;
+
+ return NULL;
}
-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);
}