#include "diff.h"
#include "diffcore.h"
#include "hash.h"
+#include "progress.h"
/* Table of rename/copy destinations */
* and the final score computation below would not have a
* divide-by-zero issue.
*/
- if (base_size * (MAX_SCORE-minimum_score) < delta_size * MAX_SCORE)
+ if (max_size * (MAX_SCORE-minimum_score) < delta_size * MAX_SCORE)
return 0;
if (!src->cnt_data && diff_populate_filespec(src, 0))
};
static int find_identical_files(struct file_similarity *src,
- struct file_similarity *dst)
+ struct file_similarity *dst,
+ struct diff_options *options)
{
int renames = 0;
}
/* Give higher scores to sources that haven't been used already */
score = !source->rename_used;
+ if (source->rename_used && options->detect_rename != DIFF_DETECT_COPY)
+ continue;
score += basename_same(source, target);
if (score > best_score) {
best = 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 {
* 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);
* 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;
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);
m[worst] = *o;
}
+static int find_renames(struct diff_score *mx, int dst_cnt, int minimum_score, int copies)
+{
+ int count = 0, i;
+
+ for (i = 0; i < dst_cnt * NUM_CANDIDATE_PER_DST; i++) {
+ struct diff_rename_dst *dst;
+
+ if ((mx[i].dst < 0) ||
+ (mx[i].score < minimum_score))
+ break; /* there is no more usable pair. */
+ dst = &rename_dst[mx[i].dst];
+ if (dst->pair)
+ continue; /* already done, either exact or fuzzy. */
+ if (!copies && rename_src[mx[i].src].one->rename_used)
+ continue;
+ record_rename_pair(mx[i].dst, mx[i].src, mx[i].score);
+ count++;
+ }
+ return count;
+}
+
void diffcore_rename(struct diff_options *options)
{
int detect_rename = options->detect_rename;
struct diff_score *mx;
int i, j, rename_count;
int num_create, num_src, dst_cnt;
+ struct progress *progress = NULL;
if (!minimum_score)
minimum_score = DEFAULT_RENAME_SCORE;
* 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)
goto cleanup;
}
+ if (options->show_rename_progress) {
+ progress = start_progress_delay(
+ "Performing inexact rename detection",
+ rename_dst_nr * rename_src_nr, 50, 1);
+ }
+
mx = xcalloc(num_create * NUM_CANDIDATE_PER_DST, sizeof(*mx));
for (dst_cnt = i = 0; i < rename_dst_nr; i++) {
struct diff_filespec *two = rename_dst[i].two;
diff_free_filespec_blob(two);
}
dst_cnt++;
+ display_progress(progress, (i+1)*rename_src_nr);
}
+ stop_progress(&progress);
/* cost matrix sorted by most to least similar pair */
qsort(mx, dst_cnt * NUM_CANDIDATE_PER_DST, sizeof(*mx), score_compare);
- for (i = 0; i < dst_cnt * NUM_CANDIDATE_PER_DST; i++) {
- struct diff_rename_dst *dst;
-
- if ((mx[i].dst < 0) ||
- (mx[i].score < minimum_score))
- break; /* there is no more usable pair. */
- dst = &rename_dst[mx[i].dst];
- if (dst->pair)
- continue; /* already done, either exact or fuzzy. */
- if (rename_src[mx[i].src].one->rename_used)
- continue;
- record_rename_pair(mx[i].dst, mx[i].src, mx[i].score);
- rename_count++;
- }
-
- for (i = 0; i < dst_cnt * NUM_CANDIDATE_PER_DST; i++) {
- struct diff_rename_dst *dst;
-
- if ((mx[i].dst < 0) ||
- (mx[i].score < minimum_score))
- break; /* there is no more usable pair. */
- dst = &rename_dst[mx[i].dst];
- if (dst->pair)
- continue; /* already done, either exact or fuzzy. */
- record_rename_pair(mx[i].dst, mx[i].src, mx[i].score);
- rename_count++;
- }
+ rename_count += find_renames(mx, dst_cnt, minimum_score, 0);
+ if (detect_rename == DIFF_DETECT_COPY)
+ rename_count += find_renames(mx, dst_cnt, minimum_score, 1);
free(mx);
cleanup: