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rerere: refactor "replay" part of do_plain_rerere()

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Extract the body of a loop that attempts to replay recorded
resolution for each conflicted path into a helper function, not
because I want to call it from multiple places later, but because
the logic has become too deeply nested and hard to read.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Junio C Hamano 2015-06-30 19:36:24 -07:00
parent e828de826b
commit 8e7768b2de
1 changed files with 40 additions and 35 deletions
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75
rerere.c
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@ -629,6 +629,44 @@ static void update_paths(struct string_list *update)
rollback_lock_file(&index_lock);
}
/*
* The path indicated by rr_item may still have conflict for which we
* have a recorded resolution, in which case replay it and optionally
* update it. Or it may have been resolved by the user and we may
* only have the preimage for that conflict, in which case the result
* needs to be recorded as a resolution in a postimage file.
*/
static void do_rerere_one_path(struct string_list_item *rr_item,
struct string_list *update)
{
const char *path = rr_item->string;
const char *name = (const char *)rr_item->util;
/* Is there a recorded resolution we could attempt to apply? */
if (has_rerere_resolution(name)) {
if (merge(name, path))
return; /* failed to replay */
if (rerere_autoupdate)
string_list_insert(update, path);
else
fprintf(stderr,
"Resolved '%s' using previous resolution.\n",
path);
goto mark_resolved;
}
/* Let's see if the user has resolved it. */
if (handle_file(path, NULL, NULL))
return; /* not yet resolved */
copy_file(rerere_path(name, "postimage"), path, 0666);
fprintf(stderr, "Recorded resolution for '%s'.\n", path);
mark_resolved:
free(rr_item->util);
rr_item->util = NULL;
}
static int do_plain_rerere(struct string_list *rr, int fd)
{
struct string_list conflict = STRING_LIST_INIT_DUP;
@ -682,41 +720,8 @@ static int do_plain_rerere(struct string_list *rr, int fd)
}
}
/*
* Some of the paths that had conflicts earlier might have
* been resolved by the user. Others may be similar to a
* conflict already that was resolved before.
*/
for (i = 0; i < rr->nr; i++) {
int ret;
const char *path = rr->items[i].string;
const char *name = (const char *)rr->items[i].util;
/* Is there a recorded resolution we could attempt to apply? */
if (has_rerere_resolution(name)) {
if (merge(name, path))
continue;
if (rerere_autoupdate)
string_list_insert(&update, path);
else
fprintf(stderr,
"Resolved '%s' using previous resolution.\n",
path);
goto mark_resolved;
}
/* Let's see if the user has resolved it. */
ret = handle_file(path, NULL, NULL);
if (ret)
continue;
copy_file(rerere_path(name, "postimage"), path, 0666);
fprintf(stderr, "Recorded resolution for '%s'.\n", path);
mark_resolved:
free(rr->items[i].util);
rr->items[i].util = NULL;
}
for (i = 0; i < rr->nr; i++)
do_rerere_one_path(&rr->items[i], &update);
if (update.nr)
update_paths(&update);