git-svnimport: Improved detection of merges.

diff --git a/fetch.c b/fetch.c
index 1d95ce0cc2d1efcba2eb26354aa36482080d4077..f7f8902580f0f5e4eb7a63000f9987e63715cd09 100644 (file)
--- a/fetch.c
+++ b/fetch.c
@@ -9,12 +9,11 @@
 
 const char *write_ref = NULL;
 
-const unsigned char *current_ref = NULL;
-
 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) 
@@ -33,7 +32,7 @@ static void report_missing(const char *what, const unsigned char *missing)
                what, missing_hex, sha1_to_hex(current_commit_sha1));
 }
 
-static int process(unsigned char *sha1, const char *type);
+static int process(struct object *obj);
 
 static int process_tree(struct tree *tree)
 {
@@ -46,19 +45,18 @@ static int process_tree(struct tree *tree)
        tree->entries = NULL;
        while (entry) {
                struct tree_entry_list *next = entry->next;
-               if (process(entry->item.any->sha1,
-                           entry->directory ? tree_type : blob_type))
+               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 SCANNED                8U
+#define COMPLETE       (1U << 0)
+#define SEEN           (1U << 1)
+#define TO_SCAN                (1U << 2)
 
 static struct commit_list *complete = NULL;
 
@@ -79,7 +77,7 @@ static int process_commit(struct commit *commit)
        pull_say("walk %s\n", sha1_to_hex(commit->object.sha1));
 
        if (get_tree) {
-               if (process(commit->tree->object.sha1, tree_type))
+               if (process(&commit->tree->object))
                        return -1;
                if (!get_all)
                        get_tree = 0;
@@ -87,7 +85,7 @@ static int process_commit(struct commit *commit)
        if (get_history) {
                struct commit_list *parents = commit->parents;
                for (; parents; parents = parents->next) {
-                       if (process(parents->item->object.sha1, commit_type))
+                       if (process(&parents->item->object))
                                return -1;
                }
        }
@@ -98,7 +96,7 @@ static int process_tag(struct tag *tag)
 {
        if (parse_tag(tag))
                return -1;
-       return process(tag->tagged->sha1, NULL);
+       return process(tag->tagged);
 }
 
 static struct object_list *process_queue = NULL;
@@ -106,10 +104,6 @@ static struct object_list **process_queue_end = &process_queue;
 
 static int process_object(struct object *obj)
 {
-       if (obj->flags & SCANNED)
-               return 0;
-       obj->flags |= SCANNED;
-
        if (obj->type == commit_type) {
                if (process_commit((struct commit *)obj))
                        return -1;
@@ -133,28 +127,23 @@ static int process_object(struct object *obj)
                     obj->type, sha1_to_hex(obj->sha1));
 }
 
-static int process(unsigned char *sha1, const char *type)
+static int process(struct object *obj)
 {
-       struct object *obj = lookup_object_type(sha1, type);
+       if (obj->flags & SEEN)
+               return 0;
+       obj->flags |= SEEN;
 
-       if (has_sha1_file(sha1)) {
-               parse_object(sha1);
+       if (has_sha1_file(obj->sha1)) {
                /* We already have it, so we should scan it now. */
-               if (obj->flags & (SCANNED | 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(sha1);
-               
        return 0;
 }
 
@@ -214,31 +203,22 @@ static int mark_complete(const char *path, const unsigned char *sha1)
 int pull(char *target)
 {
        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)
-                       return -1;
-       }
+       track_object_refs = 0;
 
-       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(sha1, NULL))
+       if (process(lookup_unknown_object(sha1)))
                return -1;
        if (loop())
                return -1;
        
-       if (write_ref) {
-               if (current_ref) {
-                       write_ref_sha1(write_ref, fd, sha1);
-               } else {
-                       write_ref_sha1_unlocked(write_ref, sha1);
-               }
-       }
+       if (write_ref)
+               write_ref_sha1_unlocked(write_ref, sha1);
        return 0;
 }