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diff.c: do not use pathname comparison to tell renames 

The final output from diff used to compare pathnames between
preimage and postimage to tell if the filepair is a rename/copy.
By explicitly marking the filepair created by diffcore_rename(),
the output routine, resolve_rename_copy(), does not have to do
so anymore.  This helps feeding a filepair that has different
pathnames in one and two elements to the diff machinery (most
notably, comparing two blobs).

Signed-off-by: Junio C Hamano <junkio@cox.net>
This commit is contained in:
Junio C Hamano 2006-08-03 12:01:01 -07:00
parent c43ce6d603
commit ef677686ef
3 changed files with 4 additions and 6 deletions
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6
diff.c
View File

@ -1786,13 +1786,9 @@ struct diff_filepair *diff_queue(struct diff_queue_struct *queue,
struct diff_filespec *one,
struct diff_filespec *two)
{
struct diff_filepair *dp = xmalloc(sizeof(*dp));
struct diff_filepair *dp = xcalloc(1, sizeof(*dp));
dp->one = one;
dp->two = two;
dp->score = 0;
dp->status = 0;
dp->source_stays = 0;
dp->broken_pair = 0;
if (queue)
diff_q(queue, dp);
return dp;

1
diffcore-rename.c
View File

@ -205,6 +205,7 @@ static void record_rename_pair(int dst_index, int src_index, int score)
fill_filespec(two, dst->sha1, dst->mode);
dp = diff_queue(NULL, one, two);
dp->renamed_pair = 1;
if (!strcmp(src->path, dst->path))
dp->score = rename_src[src_index].score;
else

3
diffcore.h
View File

@ -53,11 +53,12 @@ struct diff_filepair {
char status; /* M C R N D U (see Documentation/diff-format.txt) */
unsigned source_stays : 1; /* all of R/C are copies */
unsigned broken_pair : 1;
unsigned renamed_pair : 1;
};
#define DIFF_PAIR_UNMERGED(p) \
(!DIFF_FILE_VALID((p)->one) && !DIFF_FILE_VALID((p)->two))
#define DIFF_PAIR_RENAME(p) (strcmp((p)->one->path, (p)->two->path))
#define DIFF_PAIR_RENAME(p) ((p)->renamed_pair)
#define DIFF_PAIR_BROKEN(p) \
( (!DIFF_FILE_VALID((p)->one) != !DIFF_FILE_VALID((p)->two)) && \