5 files changed, 94 insertions, 60 deletions

diff --git a/cmd.c b/cmd.c
index 5b3c14c..8914fa5 100644
--- a/cmd.c
+++ b/cmd.c
@@ -83,50 +83,49 @@ static void objects_fn(struct cgit_context *ctx)
 }
 
 static void repolist_fn(struct cgit_context *ctx)
 {
         cgit_print_repolist();
 }
 
 static void patch_fn(struct cgit_context *ctx)
 {
         cgit_print_patch(ctx->qry.sha1);
 }
 
 static void plain_fn(struct cgit_context *ctx)
 {
         cgit_print_plain(ctx);
 }
 
 static void refs_fn(struct cgit_context *ctx)
 {
         cgit_print_refs();
 }
 
 static void snapshot_fn(struct cgit_context *ctx)
 {
-        cgit_print_snapshot(ctx->qry.head, ctx->qry.sha1,
-                            cgit_repobasename(ctx->repo->url), ctx->qry.path,
+        cgit_print_snapshot(ctx->qry.head, ctx->qry.sha1, ctx->qry.path,
                             ctx->repo->snapshots, ctx->qry.nohead);
 }
 
 static void summary_fn(struct cgit_context *ctx)
 {
         cgit_print_summary();
 }
 
 static void tag_fn(struct cgit_context *ctx)
 {
         cgit_print_tag(ctx->qry.sha1);
 }
 
 static void tree_fn(struct cgit_context *ctx)
 {
         cgit_print_tree(ctx->qry.sha1, ctx->qry.path);
 }
 
 #define def_cmd(name, want_repo, want_layout) \
         {#name, name##_fn, want_repo, want_layout}
 
 struct cgit_cmd *cgit_get_cmd(struct cgit_context *ctx)
 {
         static struct cgit_cmd cmds[] = {
diff --git a/ui-refs.c b/ui-refs.c
index 32e0429..0805fc8 100644
--- a/ui-refs.c
+++ b/ui-refs.c
@@ -57,83 +57,114 @@ static int print_branch(struct refinfo *ref)
 
         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;
diff --git a/ui-shared.c b/ui-shared.c
index 224e5f3..9319881 100644
--- a/ui-shared.c
+++ b/ui-shared.c
@@ -344,63 +344,65 @@ void cgit_diff_link(char *name, char *title, char *class, char *head,
         if (new_rev && strcmp(new_rev, ctx.qry.head)) {
                 html(delim);
                 html("id=");
                 html_url_arg(new_rev);
                 delim = "&amp;";
         }
         if (old_rev) {
                 html(delim);
                 html("id2=");
                 html_url_arg(old_rev);
         }
         html("'>");
         html_txt(name);
         html("</a>");
 }
 
 void cgit_patch_link(char *name, char *title, char *class, char *head,
                      char *rev)
 {
         reporevlink("patch", name, title, class, head, rev, NULL);
 }
 
 void cgit_object_link(struct object *obj)
 {
-        char *page, *rev, *name;
+        char *page, *shortrev, *fullrev, *name;
 
+        fullrev = sha1_to_hex(obj->sha1);
+        shortrev = xstrdup(fullrev);
+        shortrev[10] = '\0';
         if (obj->type == OBJ_COMMIT) {
-                cgit_commit_link(fmt("commit %s", sha1_to_hex(obj->sha1)), NULL, NULL,
-                                 ctx.qry.head, sha1_to_hex(obj->sha1));
+                cgit_commit_link(fmt("commit %s...", shortrev), NULL, NULL,
+                                 ctx.qry.head, fullrev);
                 return;
         } else if (obj->type == OBJ_TREE)
                 page = "tree";
         else if (obj->type == OBJ_TAG)
                 page = "tag";
         else
                 page = "blob";
-        rev = sha1_to_hex(obj->sha1);
-        name = fmt("%s %s", typename(obj->type), rev);
-        reporevlink(page, name, NULL, NULL, ctx.qry.head, rev, NULL);
+        name = fmt("%s %s...", typename(obj->type), shortrev);
+        reporevlink(page, name, NULL, NULL, ctx.qry.head, fullrev, NULL);
 }
 
 void cgit_print_date(time_t secs, char *format, int local_time)
 {
         char buf[64];
         struct tm *time;
 
         if (!secs)
                 return;
         if(local_time)
                 time = localtime(&secs);
         else
                 time = gmtime(&secs);
         strftime(buf, sizeof(buf)-1, format, time);
         html_txt(buf);
 }
 
 void cgit_print_age(time_t t, time_t max_relative, char *format)
 {
         time_t now, secs;
 
         if (!t)
                 return;
         time(&now);
@@ -686,29 +688,28 @@ void cgit_print_filemode(unsigned short mode)
         if (S_ISDIR(mode))
                 html("d");
         else if (S_ISLNK(mode))
                 html("l");
         else if (S_ISGITLINK(mode))
                 html("m");
         else
                 html("-");
         html_fileperm(mode >> 6);
         html_fileperm(mode >> 3);
         html_fileperm(mode);
 }
 
 void cgit_print_snapshot_links(const char *repo, const char *head,
                                const char *hex, int snapshots)
 {
         const struct cgit_snapshot_format* f;
             char *filename;
 
         for (f = cgit_snapshot_formats; f->suffix; f++) {
                 if (!(snapshots & f->bit))
                         continue;
                 filename = fmt("%s-%s%s", cgit_repobasename(repo), hex,
                                f->suffix);
-                cgit_snapshot_link(filename, NULL, NULL, (char *)head,
-                                   (char *)hex, filename);
+                cgit_snapshot_link(filename, NULL, NULL, NULL, NULL, filename);
                 html("<br/>");
         }
 }
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);
 }
diff --git a/ui-snapshot.h b/ui-snapshot.h
index 3540303..b6ede52 100644
--- a/ui-snapshot.h
+++ b/ui-snapshot.h
@@ -1,8 +1,7 @@
 #ifndef UI_SNAPSHOT_H
 #define UI_SNAPSHOT_H
 
 extern void cgit_print_snapshot(const char *head, const char *hex,
-                                const char *prefix, const char *filename,
-                                int snapshot, int dwim);
+                                const char *filename, int snapshot, int dwim);
 
 #endif /* UI_SNAPSHOT_H */