Merge branch 'filter-refs'

* filter-refs:
  Add links to the new refs page from summary page
  Add support for refs view
  Make cgit_print_branches()/cgit_print_tags() external
  Add descriptions of summary-branches and summary-tags to cgitrc
  Add support for config param summary-branches
  Move logic for age comparision from cmp_tag_age into cmp_age()
  Add support for config param summary-tags
  Sort tags by age
  Use reflist to print tag info
  Use reflist to print branch info
  Add functions and types for ref lists

8 files changed, 229 insertions, 37 deletions

diff --git a/Makefile b/Makefile
index 8e3da72..36b5ff6 100644
--- a/Makefile
+++ b/Makefile
@@ -17,5 +17,5 @@ EXTLIBS = git/libgit.a git/xdiff/lib.a -lz -lcrypto
 OBJECTS = shared.o cache.o parsing.o html.o ui-shared.o ui-repolist.o \
         ui-summary.o ui-log.o ui-tree.o ui-commit.o ui-diff.o \
-        ui-snapshot.o ui-blob.o ui-tag.o
+        ui-snapshot.o ui-blob.o ui-tag.o ui-refs.o
 
 
diff --git a/cgit.c b/cgit.c
index 1b85b15..cc18ed4 100644
--- a/cgit.c
+++ b/cgit.c
@@ -104,4 +104,7 @@ static void cgit_print_repo_page(struct cacheitem *item)
                 cgit_print_commit(cgit_query_sha1);
                 break;
+        case CMD_REFS:
+                cgit_print_refs();
+                break;
         case CMD_TAG:
                 cgit_print_tag(cgit_query_sha1);
diff --git a/cgit.h b/cgit.h
index e96311f..f8f0316 100644
--- a/cgit.h
+++ b/cgit.h
@@ -29,4 +29,5 @@
 #define CMD_SNAPSHOT 6
 #define CMD_TAG      7
+#define CMD_REFS     8
 
 /*
@@ -99,4 +100,19 @@ struct taginfo {
 };
 
+struct refinfo {
+        const char *refname;
+        struct object *object;
+        union {
+                struct taginfo *tag;
+                struct commitinfo *commit;
+        };
+};
+
+struct reflist {
+        struct refinfo **refs;
+        int alloc;
+        int count;
+};
+
 extern const char *cgit_version;
 
@@ -129,4 +145,6 @@ extern int cgit_cache_static_ttl;
 extern int cgit_cache_max_create_time;
 extern int cgit_summary_log;
+extern int cgit_summary_tags;
+extern int cgit_summary_branches;
 
 extern int cgit_max_msg_len;
@@ -163,4 +181,8 @@ extern int hextoint(char c);
 extern char *trim_end(const char *str, char c);
 
+extern void cgit_add_ref(struct reflist *list, struct refinfo *ref);
+extern int cgit_refs_cb(const char *refname, const unsigned char *sha1,
+                        int flags, void *cb_data);
+
 extern void *cgit_free_commitinfo(struct commitinfo *info);
 
@@ -215,4 +237,6 @@ extern void cgit_log_link(char *name, char *title, char *class, char *head,
 extern void cgit_commit_link(char *name, char *title, char *class, char *head,
                              char *rev);
+extern void cgit_refs_link(char *name, char *title, char *class, char *head,
+                           char *rev, char *path);
 extern void cgit_snapshot_link(char *name, char *title, char *class,
                                char *head, char *rev, char *archivename);
@@ -231,4 +255,6 @@ extern void cgit_print_snapshot_start(const char *mimetype,
                                       const char *filename,
                                       struct cacheitem *item);
+extern void cgit_print_branches(int maxcount);
+extern void cgit_print_tags(int maxcount);
 
 extern void cgit_print_repolist(struct cacheitem *item);
@@ -238,4 +264,5 @@ extern void cgit_print_blob(struct cacheitem *item, const char *hex, char *path)
 extern void cgit_print_tree(const char *rev, char *path);
 extern void cgit_print_commit(char *hex);
+extern void cgit_print_refs();
 extern void cgit_print_tag(char *revname);
 extern void cgit_print_diff(const char *new_hex, const char *old_hex, const char *prefix);
diff --git a/cgitrc b/cgitrc
index 796a62c..2b09e01 100644
--- a/cgitrc
+++ b/cgitrc
@@ -31,4 +31,14 @@
 
 
+## Restrict the number of branches printed in summary view. Set to 0 to
+## print all branches.
+#summary-branches=0
+
+
+## Restrict the number of tags printed in summary view. Set to 0 to
+## print all tags.
+#summary-tags=0
+
+
 ## The "Idle" column on the repository index page can read a timestamp
 ## from the specified agefile (if this file cannot be found, the mtime
diff --git a/shared.c b/shared.c
index 3d4feea..7eb2b0e 100644
--- a/shared.c
+++ b/shared.c
@@ -39,4 +39,6 @@ int cgit_cache_static_ttl      = -1;
 int cgit_cache_max_create_time =  5;
 int cgit_summary_log           =  0;
+int cgit_summary_tags          =  0;
+int cgit_summary_branches      =  0;
 int cgit_renamelimit           = -1;
 
@@ -65,5 +67,5 @@ int cgit_get_cmd_index(const char *cmd)
 {
         static char *cmds[] = {"log", "commit", "diff", "tree", "blob",
-                               "snapshot", "tag", NULL};
+                               "snapshot", "tag", "refs", NULL};
         int i;
 
@@ -182,4 +184,8 @@ void cgit_global_config_cb(const char *name, const char *value)
         else if (!strcmp(name, "summary-log"))
                 cgit_summary_log = atoi(value);
+        else if (!strcmp(name, "summary-branches"))
+                cgit_summary_branches = atoi(value);
+        else if (!strcmp(name, "summary-tags"))
+                cgit_summary_tags = atoi(value);
         else if (!strcmp(name, "agefile"))
                 cgit_agefile = xstrdup(value);
@@ -292,4 +298,45 @@ char *trim_end(const char *str, char c)
 }
 
+void cgit_add_ref(struct reflist *list, struct refinfo *ref)
+{
+        size_t size;
+
+        if (list->count >= list->alloc) {
+                list->alloc += (list->alloc ? list->alloc : 4);
+                size = list->alloc * sizeof(struct refinfo *);
+                list->refs = xrealloc(list->refs, size);
+        }
+        list->refs[list->count++] = ref;
+}
+
+struct refinfo *cgit_mk_refinfo(const char *refname, const unsigned char *sha1)
+{
+        struct refinfo *ref;
+
+        ref = xmalloc(sizeof (struct refinfo));
+        ref->refname = xstrdup(refname);
+        ref->object = parse_object(sha1);
+        switch (ref->object->type) {
+        case OBJ_TAG:
+                ref->tag = cgit_parse_tag((struct tag *)ref->object);
+                break;
+        case OBJ_COMMIT:
+                ref->commit = cgit_parse_commit((struct commit *)ref->object);
+                break;
+        }
+        return ref;
+}
+
+int cgit_refs_cb(const char *refname, const unsigned char *sha1, int flags,
+                  void *cb_data)
+{
+        struct reflist *list = (struct reflist *)cb_data;
+        struct refinfo *info = cgit_mk_refinfo(refname, sha1);
+
+        if (info)
+                cgit_add_ref(list, info);
+        return 0;
+}
+
 void cgit_diff_tree_cb(struct diff_queue_struct *q,
                        struct diff_options *options, void *data)
diff --git a/ui-refs.c b/ui-refs.c
new file mode 100644
index 0000000..295f5ba
--- a/dev/null
+++ b/ui-refs.c
@@ -0,0 +1,30 @@
+/* ui-refs.c: browse symbolic refs
+ *
+ * Copyright (C) 2006 Lars Hjemli
+ *
+ * Licensed under GNU General Public License v2
+ *   (see COPYING for full license text)
+ */
+
+#include "cgit.h"
+
+
+
+
+void cgit_print_refs()
+{
+
+        html("<table class='list nowrap'>");
+
+        if (cgit_query_path && !strncmp(cgit_query_path, "heads", 5))
+                cgit_print_branches(0);
+        else if (cgit_query_path && !strncmp(cgit_query_path, "tags", 4))
+                cgit_print_tags(0);
+        else {
+                cgit_print_branches(0);
+                html("<tr class='nohover'><td colspan='4'>&nbsp;</td></tr>");
+                cgit_print_tags(0);
+        }
+
+        html("</table>");
+}
diff --git a/ui-shared.c b/ui-shared.c
index 5c5bcf3..e4bb98f 100644
--- a/ui-shared.c
+++ b/ui-shared.c
@@ -228,4 +228,10 @@ void cgit_commit_link(char *name, char *title, char *class, char *head,
 }
 
+void cgit_refs_link(char *name, char *title, char *class, char *head,
+                    char *rev, char *path)
+{
+        reporevlink("refs", name, title, class, head, rev, path);
+}
+
 void cgit_snapshot_link(char *name, char *title, char *class, char *head,
                         char *rev, char *archivename)
diff --git a/ui-summary.c b/ui-summary.c
index de8a180..016fea2 100644
--- a/ui-summary.c
+++ b/ui-summary.c
@@ -11,15 +11,49 @@
 static int header;
 
-static int cgit_print_branch_cb(const char *refname, const unsigned char *sha1,
-                                int flags, void *cb_data)
+static int cmp_age(int age1, int age2)
+{
+        if (age1 != 0 && age2 != 0)
+                return age2 - age1;
+
+        if (age1 == 0 && age2 == 0)
+                return 0;
+
+        if (age1 == 0)
+                return +1;
+
+        return -1;
+}
+
+static int cmp_ref_name(const void *a, const void *b)
+{
+        struct refinfo *r1 = *(struct refinfo **)a;
+        struct refinfo *r2 = *(struct refinfo **)b;
+
+        return strcmp(r1->refname, r2->refname);
+}
+
+static int cmp_branch_age(const void *a, const void *b)
+{
+        struct refinfo *r1 = *(struct refinfo **)a;
+        struct refinfo *r2 = *(struct refinfo **)b;
+
+        return cmp_age(r1->commit->committer_date, r2->commit->committer_date);
+}
+
+static int cmp_tag_age(const void *a, const void *b)
+{
+        struct refinfo *r1 = *(struct refinfo **)a;
+        struct refinfo *r2 = *(struct refinfo **)b;
+
+        return cmp_age(r1->tag->tagger_date, r2->tag->tagger_date);
+}
+
+static void cgit_print_branch(struct refinfo *ref)
 {
         struct commit *commit;
         struct commitinfo *info;
-        char buf[256];
-        char *ref;
+        char *name = (char *)ref->refname;
 
-        ref = xstrdup(refname);
-        strncpy(buf, refname, sizeof(buf));
-        commit = lookup_commit(sha1);
+        commit = lookup_commit(ref->object->sha1);
         // object is not really parsed at this point, because of some fallout
         // from previous calls to git functions in cgit_print_log()
@@ -28,5 +62,5 @@ static int cgit_print_branch_cb(const char *refname, const unsigned char *sha1,
                 info = cgit_parse_commit(commit);
                 html("<tr><td>");
-                cgit_log_link(ref, NULL, NULL, ref, NULL, NULL, 0);
+                cgit_log_link(name, NULL, NULL, name, NULL, NULL, 0);
                 html("</td><td>");
                 cgit_print_age(commit->date, -1, NULL);
@@ -34,16 +68,14 @@ static int cgit_print_branch_cb(const char *refname, const unsigned char *sha1,
                 html_txt(info->author);
                 html("</td><td>");
-                cgit_commit_link(info->subject, NULL, NULL, ref, NULL);
+                cgit_commit_link(info->subject, NULL, NULL, name, NULL);
                 html("</td></tr>\n");
                 cgit_free_commitinfo(info);
         } else {
                 html("<tr><td>");
-                html_txt(buf);
+                html_txt(name);
                 html("</td><td colspan='3'>");
-                htmlf("*** bad ref %s ***", sha1_to_hex(sha1));
+                htmlf("*** bad ref %s ***", sha1_to_hex(ref->object->sha1));
                 html("</td></tr>\n");
         }
-        free(ref);
-        return 0;
 }
 
@@ -57,27 +89,19 @@ static void print_tag_header()
 }
 
-static int cgit_print_tag_cb(const char *refname, const unsigned char *sha1,
-                                int flags, void *cb_data)
+static int print_tag(struct refinfo *ref)
 {
         struct tag *tag;
         struct taginfo *info;
-        struct object *obj;
-        char buf[256], *url;
+        char *url, *name = (char *)ref->refname;
 
-        strncpy(buf, refname, sizeof(buf));
-        obj = parse_object(sha1);
-        if (!obj)
-                return 1;
-        if (obj->type == OBJ_TAG) {
-                tag = lookup_tag(sha1);
+        if (ref->object->type == OBJ_TAG) {
+                tag = lookup_tag(ref->object->sha1);
                 if (!tag || parse_tag(tag) || !(info = cgit_parse_tag(tag)))
                         return 2;
-                if (!header)
-                        print_tag_header();
                 html("<tr><td>");
                 url = cgit_pageurl(cgit_query_repo, "tag",
-                                   fmt("id=%s", refname));
+                                   fmt("id=%s", name));
                 html_link_open(url, NULL, NULL);
-                html_txt(buf);
+                html_txt(name);
                 html_link_close();
                 html("</td><td>");
@@ -94,7 +118,7 @@ static int cgit_print_tag_cb(const char *refname, const unsigned char *sha1,
                         print_tag_header();
                 html("<tr><td>");
-                html_txt(buf);
+                html_txt(name);
                 html("</td><td colspan='2'/><td>");
-                cgit_object_link(obj);
+                cgit_object_link(ref->object);
                 html("</td></tr>\n");
         }
@@ -143,17 +167,62 @@ static int cgit_print_archive_cb(const char *refname, const unsigned char *sha1,
 }
 
-static void cgit_print_branches()
+static void print_refs_link(char *path)
 {
+        html("<tr class='nohover'><td colspan='4'>");
+        cgit_refs_link("[...]", NULL, NULL, cgit_query_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'>Idle</th>"
              "<th class='left'>Author</th>"
              "<th class='left'>Head commit</th></tr>\n");
-        for_each_branch_ref(cgit_print_branch_cb, NULL);
+
+        list.refs = NULL;
+        list.alloc = list.count = 0;
+        for_each_branch_ref(cgit_refs_cb, &list);
+
+        if (maxcount == 0 || maxcount > list.count)
+                maxcount = list.count;
+
+        if (maxcount < list.count) {
+                qsort(list.refs, list.count, sizeof(*list.refs), cmp_branch_age);
+                qsort(list.refs, maxcount, sizeof(*list.refs), cmp_ref_name);
+        }
+
+        for(i=0; i<maxcount; i++)
+                cgit_print_branch(list.refs[i]);
+
+        if (maxcount < list.count)
+                print_refs_link("heads");
 }
 
-static void cgit_print_tags()
+void cgit_print_tags(int maxcount)
 {
+        struct reflist list;
+        int i;
+
         header = 0;
-        for_each_tag_ref(cgit_print_tag_cb, NULL);
+        list.refs = NULL;
+        list.alloc = list.count = 0;
+        for_each_tag_ref(cgit_refs_cb, &list);
+        if (list.count == 0)
+                return;
+        qsort(list.refs, list.count, sizeof(*list.refs), cmp_tag_age);
+        if (!maxcount)
+                maxcount = list.count;
+        else if (maxcount > list.count)
+                maxcount = list.count;
+        print_tag_header();
+        for(i=0; i<maxcount; i++)
+                print_tag(list.refs[i]);
+
+        if (maxcount < list.count)
+                print_refs_link("tags");
 }
 
@@ -183,7 +252,7 @@ void cgit_print_summary()
         if (cgit_summary_log > 0)
                 html("<tr class='nohover'><td colspan='4'>&nbsp;</td></tr>");
-        cgit_print_branches();
+        cgit_print_branches(cgit_summary_branches);
         html("<tr class='nohover'><td colspan='4'>&nbsp;</td></tr>");
-        cgit_print_tags();
+        cgit_print_tags(cgit_summary_tags);
         html("</table>");
 }