Create a new function, get_diffpairs() to compute the diff_filepairs
between two trees. While these are currently only used in
get_renames(), I want them to be available to some new functions. No
actual logic changes yet.
Signed-off-by: Elijah Newren <newren@xxxxxxxxx>
---
merge-recursive.c | 86 +++++++++++++++++++++++++++++++++++++++++--------------
1 file changed, 64 insertions(+), 22 deletions(-)
diff --git a/merge-recursive.c b/merge-recursive.c
index da7c67eb8..4adff2d53 100644
--- a/merge-recursive.c
+++ b/merge-recursive.c
@@ -1312,24 +1312,15 @@ static int conflict_rename_rename_2to1(struct merge_options *o,
}
/*
- * Get information of all renames which occurred between 'o_tree' and
- * 'tree'. We need the three trees in the merge ('o_tree', 'a_tree' and
- * 'b_tree') to be able to associate the correct cache entries with
- * the rename information. 'tree' is always equal to either a_tree or b_tree.
+ * Get the diff_filepairs changed between o_tree and tree.
*/
-static struct string_list *get_renames(struct merge_options *o,
- struct tree *tree,
- struct tree *o_tree,
- struct tree *a_tree,
- struct tree *b_tree,
- struct string_list *entries)
+static struct diff_queue_struct *get_diffpairs(struct merge_options *o,
+ struct tree *o_tree,
+ struct tree *tree)
{
- int i;
- struct string_list *renames;
+ struct diff_queue_struct *ret;
struct diff_options opts;
- renames = xcalloc(1, sizeof(struct string_list));
-
diff_setup(&opts);
opts.flags.recursive = 1;
opts.flags.rename_empty = 0;
@@ -1345,10 +1336,43 @@ static struct string_list *get_renames(struct merge_options *o,
diffcore_std(&opts);
if (opts.needed_rename_limit > o->needed_rename_limit)
o->needed_rename_limit = opts.needed_rename_limit;
- for (i = 0; i < diff_queued_diff.nr; ++i) {
+
+ ret = malloc(sizeof(struct diff_queue_struct));
+ ret->queue = diff_queued_diff.queue;
+ ret->nr = diff_queued_diff.nr;
+ /* Ignore diff_queued_diff.alloc; we won't be changing size at all */
+
+ opts.output_format = DIFF_FORMAT_NO_OUTPUT;
+ diff_queued_diff.nr = 0;
+ diff_queued_diff.queue = NULL;
+ diff_flush(&opts);
+ return ret;
+}
+
+/*
+ * Get information of all renames which occurred in 'pairs', making use of
+ * any implicit directory renames inferred from the other side of history.
+ * We need the three trees in the merge ('o_tree', 'a_tree' and 'b_tree')
+ * to be able to associate the correct cache entries with the rename
+ * information; tree is always equal to either a_tree or b_tree.
+ */
+static struct string_list *get_renames(struct merge_options *o,
+ struct diff_queue_struct *pairs,
+ struct tree *tree,
+ struct tree *o_tree,
+ struct tree *a_tree,
+ struct tree *b_tree,
+ struct string_list *entries)
+{
+ int i;
+ struct string_list *renames;
+
+ renames = xcalloc(1, sizeof(struct string_list));
+
+ for (i = 0; i < pairs->nr; ++i) {
struct string_list_item *item;
struct rename *re;
- struct diff_filepair *pair = diff_queued_diff.queue[i];
+ struct diff_filepair *pair = pairs->queue[i];
if (pair->status != 'R') {
diff_free_filepair(pair);
@@ -1373,9 +1397,6 @@ static struct string_list *get_renames(struct merge_options *o,
item = string_list_insert(renames, pair->one->path);
item->util = re;
}
- opts.output_format = DIFF_FORMAT_NO_OUTPUT;
- diff_queued_diff.nr = 0;
- diff_flush(&opts);
return renames;
}
@@ -1646,15 +1667,36 @@ static int handle_renames(struct merge_options *o,
struct string_list *entries,
struct rename_info *ri)
{
+ struct diff_queue_struct *head_pairs, *merge_pairs;
+ int clean;
+
ri->head_renames = NULL;
ri->merge_renames = NULL;
if (!o->detect_rename)
return 1;
- ri->head_renames = get_renames(o, head, common, head, merge, entries);
- ri->merge_renames = get_renames(o, merge, common, head, merge, entries);
- return process_renames(o, ri->head_renames, ri->merge_renames);
+ head_pairs = get_diffpairs(o, common, head);
+ merge_pairs = get_diffpairs(o, common, merge);
+
+ ri->head_renames = get_renames(o, head_pairs, head,
+ common, head, merge, entries);
+ ri->merge_renames = get_renames(o, merge_pairs, merge,
+ common, head, merge, entries);
+ clean = process_renames(o, ri->head_renames, ri->merge_renames);
+
+ /*
+ * Some cleanup is deferred until cleanup_renames() because the
+ * data structures are still needed and referenced in
+ * process_entry(). But there are a few things we can free now.
+ */
+
+ free(head_pairs->queue);
+ free(head_pairs);
+ free(merge_pairs->queue);
+ free(merge_pairs);
+
+ return clean;
}
static void cleanup_rename(struct string_list *rename)
--
2.14.2
