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Add a macro DIFF_QUEUE_CLEAR.

Refactor the diff_queue_struct code, this macro help
to reset the structure.

Signed-off-by: Bo Yang <struggleyb.nku@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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1 parent 3bf7886 commit 9ca5df90615aa3c6b60e1bc8f03db6cae98e816c @byang byang committed with May 6, 2010
Showing with 14 additions and 16 deletions.
  1. +5 −8 diff.c
  2. +2 −4 diffcore-break.c
  3. +1 −2 diffcore-pickaxe.c
  4. +1 −2 diffcore-rename.c
  5. +5 −0 diffcore.h
View
13 diff.c
@@ -2540,6 +2540,7 @@ static void run_checkdiff(struct diff_filepair *p, struct diff_options *o)
void diff_setup(struct diff_options *options)
{
memset(options, 0, sizeof(*options));
+ memset(&diff_queued_diff, 0, sizeof(diff_queued_diff));
options->file = stdout;
@@ -3457,8 +3458,7 @@ int diff_flush_patch_id(struct diff_options *options, unsigned char *sha1)
diff_free_filepair(q->queue[i]);
free(q->queue);
- q->queue = NULL;
- q->nr = q->alloc = 0;
+ DIFF_QUEUE_CLEAR(q);
return result;
}
@@ -3586,8 +3586,7 @@ void diff_flush(struct diff_options *options)
diff_free_filepair(q->queue[i]);
free_queue:
free(q->queue);
- q->queue = NULL;
- q->nr = q->alloc = 0;
+ DIFF_QUEUE_CLEAR(q);
if (options->close_file)
fclose(options->file);
@@ -3609,8 +3608,7 @@ static void diffcore_apply_filter(const char *filter)
int i;
struct diff_queue_struct *q = &diff_queued_diff;
struct diff_queue_struct outq;
- outq.queue = NULL;
- outq.nr = outq.alloc = 0;
+ DIFF_QUEUE_CLEAR(&outq);
if (!filter)
return;
@@ -3678,8 +3676,7 @@ static void diffcore_skip_stat_unmatch(struct diff_options *diffopt)
int i;
struct diff_queue_struct *q = &diff_queued_diff;
struct diff_queue_struct outq;
- outq.queue = NULL;
- outq.nr = outq.alloc = 0;
+ DIFF_QUEUE_CLEAR(&outq);
for (i = 0; i < q->nr; i++) {
struct diff_filepair *p = q->queue[i];
View
6 diffcore-break.c
@@ -162,8 +162,7 @@ void diffcore_break(int break_score)
if (!merge_score)
merge_score = DEFAULT_MERGE_SCORE;
- outq.nr = outq.alloc = 0;
- outq.queue = NULL;
+ DIFF_QUEUE_CLEAR(&outq);
for (i = 0; i < q->nr; i++) {
struct diff_filepair *p = q->queue[i];
@@ -256,8 +255,7 @@ void diffcore_merge_broken(void)
struct diff_queue_struct outq;
int i, j;
- outq.nr = outq.alloc = 0;
- outq.queue = NULL;
+ DIFF_QUEUE_CLEAR(&outq);
for (i = 0; i < q->nr; i++) {
struct diff_filepair *p = q->queue[i];
View
3 diffcore-pickaxe.c
@@ -55,8 +55,7 @@ void diffcore_pickaxe(const char *needle, int opts)
int i, has_changes;
regex_t regex, *regexp = NULL;
struct diff_queue_struct outq;
- outq.queue = NULL;
- outq.nr = outq.alloc = 0;
+ DIFF_QUEUE_CLEAR(&outq);
if (opts & DIFF_PICKAXE_REGEX) {
int err;
View
3 diffcore-rename.c
@@ -569,8 +569,7 @@ void diffcore_rename(struct diff_options *options)
/* At this point, we have found some renames and copies and they
* are recorded in rename_dst. The original list is still in *q.
*/
- outq.queue = NULL;
- outq.nr = outq.alloc = 0;
+ DIFF_QUEUE_CLEAR(&outq);
for (i = 0; i < q->nr; i++) {
struct diff_filepair *p = q->queue[i];
struct diff_filepair *pair_to_free = NULL;
View
5 diffcore.h
@@ -92,6 +92,11 @@ struct diff_queue_struct {
int alloc;
int nr;
};
+#define DIFF_QUEUE_CLEAR(q) \
+ do { \
+ (q)->queue = NULL; \
+ (q)->nr = (q)->alloc = 0; \
+ } while(0);
extern struct diff_queue_struct diff_queued_diff;
extern struct diff_filepair *diff_queue(struct diff_queue_struct *,

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