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diff-lib: simplify do_diff_cache()

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Since 34110cd (Make 'unpack_trees()' have a separate source and
destination index, 2008-03-06), we can run unpack_trees() without munging
the index at all, but do_diff_cache() tried ever so carefully to work
around the old behaviour of the function.

We can just tell unpack_trees() not to touch the original index and there
is no need to clean-up whatever the previous round has done.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Junio C Hamano 2011-07-13 18:42:32 -07:00
parent ff00b682f2
commit fe549c21fc
1 changed files with 1 additions and 25 deletions
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26
diff-lib.c
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@ -480,33 +480,9 @@ 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);
@ -521,7 +497,7 @@ int do_diff_cache(const unsigned char *tree_sha1, struct diff_options *opt)
opts.fn = oneway_diff;
opts.unpack_data = &revs;
opts.src_index = &the_index;
opts.dst_index = &the_index;
opts.dst_index = NULL;
init_tree_desc(&t, tree->buffer, tree->size);
if (unpack_trees(1, &t, &opts))