Merge branch 'ph/rerere-doc' into maint-1.7.8

[git.git] / diff-lib.c

diff --git a/diff-lib.c b/diff-lib.c
index 3b5f2242a597ff1b44a3af6be72cb14e6e0d5455..fc0dff31b58c8bd6668de5c6396a93b31cc5729d 100644 (file)
--- a/diff-lib.c
+++ b/diff-lib.c
@@ -102,9 +102,7 @@ int run_diff_files(struct rev_info *revs, unsigned int option)
                int changed;
                unsigned dirty_submodule = 0;
 
-               if (DIFF_OPT_TST(&revs->diffopt, QUICK) &&
-                   !revs->diffopt.filter &&
-                   DIFF_OPT_TST(&revs->diffopt, HAS_CHANGES))
+               if (diff_can_quit_early(&revs->diffopt))
                        break;
 
                if (!ce_path_match(ce, &revs->prune_data))
@@ -291,7 +289,7 @@ static void show_new_file(struct rev_info *revs,
 
        /*
         * New file in the index: it might actually be different in
-        * the working copy.
+        * the working tree.
         */
        if (get_stat_data(new, &sha1, &mode, cached, match_missing,
            &dirty_submodule, &revs->diffopt) < 0)
@@ -381,7 +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;
        }
 
@@ -435,26 +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;
@@ -465,9 +468,20 @@ int run_diff_index(struct rev_info *revs, int cached)
        opts.unpack_data = revs;
        opts.src_index = &the_index;
        opts.dst_index = NULL;
+       opts.pathspec = &revs->diffopt.pathspec;
+       opts.pathspec->recursive = 1;
+       opts.pathspec->max_depth = -1;
 
        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/");
@@ -479,53 +493,13 @@ 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;
 }