Improve abstraction of ref lock/write.

[git.git] / fetch.c

diff --git a/fetch.c b/fetch.c
index a1748e0..8bdaacb 100644 (file)
--- a/fetch.c
+++ b/fetch.c
@@ -15,6 +15,7 @@ int get_tree = 0;
 int get_history = 0;
 int get_all = 0;
 int get_verbosely = 0;
+int get_recover = 0;
 static unsigned char current_commit_sha1[20];
 
 void pull_say(const char *fmt, const char *hex) 
@@ -48,16 +49,16 @@ static int process_tree(struct tree *tree)
                struct tree_entry_list *next = entry->next;
                if (process(entry->item.any))
                        return -1;
+               free(entry->name);
                free(entry);
                entry = next;
        }
        return 0;
 }
 
-#define COMPLETE       1U
-#define TO_FETCH       2U
-#define TO_SCAN                4U
-#define SEEN           16U
+#define COMPLETE       (1U << 0)
+#define SEEN           (1U << 1)
+#define TO_SCAN                (1U << 2)
 
 static struct commit_list *complete = NULL;
 
@@ -135,23 +136,16 @@ static int process(struct object *obj)
        obj->flags |= SEEN;
 
        if (has_sha1_file(obj->sha1)) {
-               parse_object(obj->sha1);
                /* We already have it, so we should scan it now. */
-               if (obj->flags & TO_SCAN)
-                       return 0;
-               object_list_insert(obj, process_queue_end);
-               process_queue_end = &(*process_queue_end)->next;
                obj->flags |= TO_SCAN;
-               return 0;
+       } else {
+               if (obj->flags & COMPLETE)
+                       return 0;
+               prefetch(obj->sha1);
        }
-       if (obj->flags & (COMPLETE | TO_FETCH))
-               return 0;
+               
        object_list_insert(obj, process_queue_end);
        process_queue_end = &(*process_queue_end)->next;
-       obj->flags |= TO_FETCH;
-
-       prefetch(obj->sha1);
-               
        return 0;
 }
 
@@ -171,7 +165,7 @@ static int loop(void)
                 * the queue because we needed to fetch it first.
                 */
                if (! (obj->flags & TO_SCAN)) {
-                       if (!has_sha1_file(obj->sha1) && fetch(obj->sha1)) {
+                       if (fetch(obj->sha1)) {
                                report_missing(obj->type
                                               ? obj->type
                                               : "object", obj->sha1);
@@ -210,32 +204,37 @@ static int mark_complete(const char *path, const unsigned char *sha1)
 
 int pull(char *target)
 {
+       struct ref_lock *lock;
        unsigned char sha1[20];
-       int fd = -1;
 
        save_commit_buffer = 0;
-       if (write_ref && current_ref) {
-               fd = lock_ref_sha1(write_ref, current_ref);
-               if (fd < 0)
+       track_object_refs = 0;
+       if (write_ref) {
+               lock = lock_ref_sha1(write_ref, current_ref, 1);
+               if (!lock)
                        return -1;
        }
 
-       for_each_ref(mark_complete);
+       if (!get_recover) {
+               for_each_ref(mark_complete);
+       }
 
-       if (interpret_target(target, sha1))
-               return error("Could not interpret %s as something to pull",
-                            target);
-       if (process(lookup_unknown_object(sha1)))
+       if (interpret_target(target, sha1)) {
+               error("Could not interpret %s as something to pull", target);
+               unlock_ref(lock);
+               return -1;
+       }
+       if (process(lookup_unknown_object(sha1))) {
+               unlock_ref(lock);
                return -1;
-       if (loop())
+       }
+       if (loop()) {
+               unlock_ref(lock);
                return -1;
-       
+       }
+
        if (write_ref) {
-               if (current_ref) {
-                       write_ref_sha1(write_ref, fd, sha1);
-               } else {
-                       write_ref_sha1_unlocked(write_ref, sha1);
-               }
+               return write_ref_sha1(lock, sha1, "git fetch");
        }
        return 0;
 }