Add functions and types for ref lists

This adds two structs, refinfo and reflist, and functions for building
a list of refs.

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

1 files changed, 41 insertions, 0 deletions

diff --git a/shared.c b/shared.c
index 3d4feea..d815cb1 100644
--- a/shared.c
+++ b/shared.c
@@ -278,32 +278,73 @@ char *trim_end(const char *str, char c)
                 return NULL;
         t = (char *)str;
         len = strlen(t);
         while(len > 0 && t[len - 1] == c)
                 len--;
 
         if (len == 0)
                 return NULL;
 
         c = t[len];
         t[len] = '\0';
         s = xstrdup(t);
         t[len] = c;
         return s;
 }
 
+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)
 {
         int i;
 
         for (i = 0; i < q->nr; i++) {
                 if (q->queue[i]->status == 'U')
                         continue;
                 ((filepair_fn)data)(q->queue[i]);
         }
 }
 
 static int load_mmfile(mmfile_t *file, const unsigned char *sha1)
 {
         enum object_type type;