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for_each_hash: allow passing a 'void *data' pointer to callback

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For the find_exact_renames() function, this allows us to pass the
diff_options structure pointer to the low-level routines.  We will use
that to distinguish between the "rename" and "copy" cases.

Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Linus Torvalds
2011-02-18 19:55:19 -08:00
committed by Junio C Hamano
parent 7ed863a85a
commit 11f944dd6b
4 changed files with 13 additions and 11 deletions
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14
diffcore-rename.c
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@ -247,7 +247,8 @@ struct file_similarity {
};
static int find_identical_files(struct file_similarity *src,
struct file_similarity *dst)
struct file_similarity *dst,
struct diff_options *options)
{
int renames = 0;
@ -306,11 +307,12 @@ static void free_similarity_list(struct file_similarity *p)
}
}
static int find_same_files(void *ptr)
static int find_same_files(void *ptr, void *data)
{
int ret;
struct file_similarity *p = ptr;
struct file_similarity *src = NULL, *dst = NULL;
struct diff_options *options = data;
/* Split the hash list up into sources and destinations */
do {
@ -329,7 +331,7 @@ static int find_same_files(void *ptr)
* If we have both sources *and* destinations, see if
* we can match them up
*/
ret = (src && dst) ? find_identical_files(src, dst) : 0;
ret = (src && dst) ? find_identical_files(src, dst, options) : 0;
/* Free the hashes and return the number of renames found */
free_similarity_list(src);
@ -377,7 +379,7 @@ static void insert_file_table(struct hash_table *table, int src_dst, int index,
* and then during the second round we try to match
* cache-dirty entries as well.
*/
static int find_exact_renames(void)
static int find_exact_renames(struct diff_options *options)
{
int i;
struct hash_table file_table;
@ -390,7 +392,7 @@ static int find_exact_renames(void)
insert_file_table(&file_table, 1, i, rename_dst[i].two);
/* Find the renames */
i = for_each_hash(&file_table, find_same_files);
i = for_each_hash(&file_table, find_same_files, options);
/* .. and free the hash data structure */
free_hash(&file_table);
@ -467,7 +469,7 @@ void diffcore_rename(struct diff_options *options)
* We really want to cull the candidates list early
* with cheap tests in order to avoid doing deltas.
*/
rename_count = find_exact_renames();
rename_count = find_exact_renames(options);
/* Did we only want exact renames? */
if (minimum_score == MAX_SCORE)