Add links to enable downloading of tagged blobs

All tags below refs/archives are shown on the repo summary page as
download links. The links referes to the tagged objects, using the
tag name as filename for download.

This can be used to add shortcuts for release tarballs, documentation
and other blobs stored in the object database, especially blobs that
are not reachable during cloning.

Signed-off-by: Lars Hjemli <hjemli@gmail.com>

1 files changed, 65 insertions, 9 deletions

diff --git a/ui-summary.c b/ui-summary.c
index 0a7869b..9388f5f 100644
--- a/ui-summary.c
+++ b/ui-summary.c
@@ -1,141 +1,197 @@
 /* ui-summary.c: functions for generating repo summary page
  *
  * Copyright (C) 2006 Lars Hjemli
  *
  * Licensed under GNU General Public License v2
  *   (see COPYING for full license text)
  */
 
 #include "cgit.h"
 
+int items = 0;
+
 static int cgit_print_branch_cb(const char *refname, const unsigned char *sha1,
                                 int flags, void *cb_data)
 {
         struct commit *commit;
         struct commitinfo *info;
         char buf[256], *url;
 
         strncpy(buf, refname, sizeof(buf));
         commit = lookup_commit(sha1);
         if (commit && !parse_commit(commit)){
                 info = cgit_parse_commit(commit);
                 html("<tr><td>");
                 url = cgit_pageurl(cgit_query_repo, "log", 
                                    fmt("h=%s", refname));
                 html_link_open(url, NULL, NULL);
                 html_txt(buf);
                 html_link_close();
                 html("</td><td>");
                 cgit_print_date(commit->date);
                 html("</td><td>");
                 html_txt(info->author);
                 html("</td><td>");
                 url = cgit_pageurl(cgit_query_repo, "commit", 
                                    fmt("id=%s", sha1_to_hex(sha1)));
                 html_link_open(url, NULL, NULL);
                 html_ntxt(cgit_max_msg_len, info->subject);
                 html_link_close();
                 html("</td></tr>\n");
                 cgit_free_commitinfo(info);
         } else {
                 html("<tr><td>");
                 html_txt(buf);
                 html("</td><td colspan='3'>");
                 htmlf("*** bad ref %s ***", sha1_to_hex(sha1));
                 html("</td></tr>\n");
         }
         return 0;
 }
 
 
 static void cgit_print_object_ref(struct object *obj)
 {
         char *page, *url;
 
         if (obj->type == OBJ_COMMIT)
                 page = "commit";
         else if (obj->type == OBJ_TREE)
                 page = "tree";
         else
                 page = "view";
 
         url = cgit_pageurl(cgit_query_repo, page, 
                            fmt("id=%s", sha1_to_hex(obj->sha1)));
         html_link_open(url, NULL, NULL);
         htmlf("%s %s", typename(obj->type), 
               sha1_to_hex(obj->sha1));
         html_link_close();
 }
 
 static int cgit_print_tag_cb(const char *refname, const unsigned char *sha1,
                                 int flags, void *cb_data)
 {
         struct tag *tag;
         struct taginfo *info;
         struct object *obj;
         char buf[256], *url;
  
         strncpy(buf, refname, sizeof(buf));
         obj = parse_object(sha1);
         if (!obj)
                 return 1;
         if (obj->type == OBJ_TAG) {
                 tag = lookup_tag(sha1);
                 if (!tag || parse_tag(tag) || !(info = cgit_parse_tag(tag)))
                         return 2;
+                if (!items) {
+                        html("<tr class='nohover'><th class='left'>Tag</th>"
+                             "<th class='left'>Created</th>"
+                             "<th class='left'>Author</th>"
+                             "<th class='left'>Reference</th></tr>\n");
+                }
+                items++;
                 html("<tr><td>");
                 url = cgit_pageurl(cgit_query_repo, "view", 
                                    fmt("id=%s", sha1_to_hex(sha1)));
                 html_link_open(url, NULL, NULL);
                 html_txt(buf);
                 html_link_close();
                 html("</td><td>");
                 if (info->tagger_date > 0)
                         cgit_print_date(info->tagger_date);
                 html("</td><td>");
                 if (info->tagger)
                         html(info->tagger);
                 html("</td><td>");
                 cgit_print_object_ref(tag->tagged);
                 html("</td></tr>\n");
         } else {
                 html("<tr><td>");
                 html_txt(buf);
                 html("</td><td colspan='2'/><td>");
                 cgit_print_object_ref(obj);
                 html("</td></tr>\n");
         }
         return 0;
 }
 
+static int cgit_print_archive_cb(const char *refname, const unsigned char *sha1,
+                                 int flags, void *cb_data)
+{
+        struct tag *tag;
+        struct taginfo *info;
+        struct object *obj;
+        char buf[256], *url;
+
+        if (prefixcmp(refname, "refs/archives"))
+                return 0;
+        strncpy(buf, refname+14, sizeof(buf));
+        obj = parse_object(sha1);
+        if (!obj)
+                return 1;
+        if (obj->type == OBJ_TAG) {
+                tag = lookup_tag(sha1);
+                if (!tag || parse_tag(tag) || !(info = cgit_parse_tag(tag)))
+                        return 0;
+                hashcpy(sha1, tag->tagged->sha1);
+        } else if (obj->type != OBJ_BLOB) {
+                return 0;
+        }
+        if (!items) {
+                html("<table>");
+                html("<tr><th>Downloads</th></tr>");
+        }
+        items++;
+        html("<tr><td>");
+        url = cgit_pageurl(cgit_query_repo, "blob",
+                           fmt("id=%s&path=%s", sha1_to_hex(sha1),
+                               buf));
+        html_link_open(url, NULL, NULL);
+        html_txt(buf);
+        html_link_close();
+        html("</td><tr>");
+        return 0;
+}
+
 static void cgit_print_branches()
 {
         html("<tr class='nohover'><th class='left'>Branch</th>"
              "<th class='left'>Updated</th>"
              "<th class='left'>Author</th>"
              "<th class='left'>Head commit</th></tr>\n");
         for_each_branch_ref(cgit_print_branch_cb, NULL);
 }
 
 static void cgit_print_tags()
 {
-        html("<tr class='nohover'><th class='left'>Tag</th>"
-             "<th class='left'>Created</th>"
-             "<th class='left'>Author</th>"
-             "<th class='left'>Reference</th></tr>\n");
+        items = 0;
         for_each_tag_ref(cgit_print_tag_cb, NULL);
 }
 
+static void cgit_print_archives()
+{
+        items = 0;
+        for_each_ref(cgit_print_archive_cb, NULL);
+        if (items)
+                html("</table>");
+}
+
 void cgit_print_summary()
 {
-        html("<h2>");
-        html(cgit_repo->name);
-        html("</h2><h3>");
-        html(cgit_repo->desc);
-        html("</h3>");
         html("<table class='list nowrap'>");
+        html("<tr class='nohover'><td id='summary' colspan='3'>");
+        html("<h2>");
+        html_txt(cgit_repo->name);
+        html(" - ");
+        html_txt(cgit_repo->desc);
+        html("</h2>");
+        html("</td><td id='archivelist'>");
+        cgit_print_archives();
+        html("</td></tr>");
         cgit_print_branches();
         html("<tr class='nohover'><td colspan='4'>&nbsp;</td></tr>");
         cgit_print_tags();
         html("</table>");
 }