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-rw-r--r--diff-lib.c81
1 files changed, 27 insertions, 54 deletions
diff --git a/diff-lib.c b/diff-lib.c
index 9c29293bbc..f8454dd291 100644
--- a/diff-lib.c
+++ b/diff-lib.c
@@ -379,7 +379,8 @@ static void do_oneway_diff(struct unpack_trees_options *o,
if (cached && idx && ce_stage(idx)) {
struct diff_filepair *pair;
pair = diff_unmerge(&revs->diffopt, idx->name);
- fill_filespec(pair->one, idx->sha1, idx->ce_mode);
+ if (tree)
+ fill_filespec(pair->one, tree->sha1, tree->ce_mode);
return;
}
@@ -433,26 +434,30 @@ static int oneway_diff(struct cache_entry **src, struct unpack_trees_options *o)
if (tree == o->df_conflict_entry)
tree = NULL;
- if (ce_path_match(idx ? idx : tree, &revs->prune_data))
+ if (ce_path_match(idx ? idx : tree, &revs->prune_data)) {
do_oneway_diff(o, idx, tree);
+ if (diff_can_quit_early(&revs->diffopt)) {
+ o->exiting_early = 1;
+ return -1;
+ }
+ }
return 0;
}
-int run_diff_index(struct rev_info *revs, int cached)
+static int diff_cache(struct rev_info *revs,
+ const unsigned char *tree_sha1,
+ const char *tree_name,
+ int cached)
{
- struct object *ent;
struct tree *tree;
- const char *tree_name;
- struct unpack_trees_options opts;
struct tree_desc t;
+ struct unpack_trees_options opts;
- ent = revs->pending.objects[0].item;
- tree_name = revs->pending.objects[0].name;
- tree = parse_tree_indirect(ent->sha1);
+ tree = parse_tree_indirect(tree_sha1);
if (!tree)
- return error("bad tree object %s", tree_name);
-
+ return error("bad tree object %s",
+ tree_name ? tree_name : sha1_to_hex(tree_sha1));
memset(&opts, 0, sizeof(opts));
opts.head_idx = 1;
opts.index_only = cached;
@@ -465,7 +470,15 @@ int run_diff_index(struct rev_info *revs, int cached)
opts.dst_index = NULL;
init_tree_desc(&t, tree->buffer, tree->size);
- if (unpack_trees(1, &t, &opts))
+ return unpack_trees(1, &t, &opts);
+}
+
+int run_diff_index(struct rev_info *revs, int cached)
+{
+ struct object_array_entry *ent;
+
+ ent = revs->pending.objects;
+ if (diff_cache(revs, ent->item->sha1, ent->name, cached))
exit(128);
diff_set_mnemonic_prefix(&revs->diffopt, "c/", cached ? "i/" : "w/");
@@ -477,53 +490,13 @@ int run_diff_index(struct rev_info *revs, int cached)
int do_diff_cache(const unsigned char *tree_sha1, struct diff_options *opt)
{
- struct tree *tree;
struct rev_info revs;
- int i;
- struct cache_entry **dst;
- struct cache_entry *last = NULL;
- struct unpack_trees_options opts;
- struct tree_desc t;
-
- /*
- * This is used by git-blame to run diff-cache internally;
- * it potentially needs to repeatedly run this, so we will
- * start by removing the higher order entries the last round
- * left behind.
- */
- dst = active_cache;
- for (i = 0; i < active_nr; i++) {
- struct cache_entry *ce = active_cache[i];
- if (ce_stage(ce)) {
- if (last && !strcmp(ce->name, last->name))
- continue;
- cache_tree_invalidate_path(active_cache_tree,
- ce->name);
- last = ce;
- ce->ce_flags |= CE_REMOVE;
- }
- *dst++ = ce;
- }
- active_nr = dst - active_cache;
init_revisions(&revs, NULL);
init_pathspec(&revs.prune_data, opt->pathspec.raw);
- tree = parse_tree_indirect(tree_sha1);
- if (!tree)
- die("bad tree object %s", sha1_to_hex(tree_sha1));
-
- memset(&opts, 0, sizeof(opts));
- opts.head_idx = 1;
- opts.index_only = 1;
- opts.diff_index_cached = !DIFF_OPT_TST(opt, FIND_COPIES_HARDER);
- opts.merge = 1;
- opts.fn = oneway_diff;
- opts.unpack_data = &revs;
- opts.src_index = &the_index;
- opts.dst_index = &the_index;
+ revs.diffopt = *opt;
- init_tree_desc(&t, tree->buffer, tree->size);
- if (unpack_trees(1, &t, &opts))
+ if (diff_cache(&revs, tree_sha1, NULL, 1))
exit(128);
return 0;
}