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-rw-r--r--diff-files.c212
1 files changed, 26 insertions, 186 deletions
diff --git a/diff-files.c b/diff-files.c
index ffbef48..b9d193d 100644
--- a/diff-files.c
+++ b/diff-files.c
@@ -12,203 +12,43 @@ static const char diff_files_usage[] =
"git-diff-files [-q] [-0/-1/2/3 |-c|--cc] [<common diff options>] [<path>...]"
COMMON_DIFF_OPTIONS_HELP;
-static struct rev_info rev;
-static int silent = 0;
-static int diff_unmerged_stage = 2;
-static int combine_merges = 0;
-static int dense_combined_merges = 0;
-
-static void show_unmerge(const char *path)
-{
- diff_unmerge(&rev.diffopt, path);
-}
-
-static void show_file(int pfx, struct cache_entry *ce)
-{
- diff_addremove(&rev.diffopt, pfx, ntohl(ce->ce_mode),
- ce->sha1, ce->name, NULL);
-}
-
-static void show_modified(int oldmode, int mode,
- const unsigned char *old_sha1, const unsigned char *sha1,
- char *path)
-{
- diff_change(&rev.diffopt, oldmode, mode, old_sha1, sha1, path, NULL);
-}
-
int main(int argc, const char **argv)
{
- const char **pathspec;
- const char *prefix = setup_git_directory();
- int entries, i;
+ struct rev_info rev;
+ int silent = 0;
git_config(git_diff_config);
- diff_setup(&rev.diffopt);
+ init_revisions(&rev);
+ rev.abbrev = 0;
+
+ argc = setup_revisions(argc, argv, &rev, NULL);
while (1 < argc && argv[1][0] == '-') {
- if (!strcmp(argv[1], "--")) {
- argv++;
- argc--;
- break;
- }
- if (!strcmp(argv[1], "-0"))
- diff_unmerged_stage = 0;
- else if (!strcmp(argv[1], "-1"))
- diff_unmerged_stage = 1;
- else if (!strcmp(argv[1], "-2"))
- diff_unmerged_stage = 2;
- else if (!strcmp(argv[1], "-3"))
- diff_unmerged_stage = 3;
- else if (!strcmp(argv[1], "--base"))
- diff_unmerged_stage = 1;
+ if (!strcmp(argv[1], "--base"))
+ rev.max_count = 1;
else if (!strcmp(argv[1], "--ours"))
- diff_unmerged_stage = 2;
+ rev.max_count = 2;
else if (!strcmp(argv[1], "--theirs"))
- diff_unmerged_stage = 3;
+ rev.max_count = 3;
else if (!strcmp(argv[1], "-q"))
silent = 1;
- else if (!strcmp(argv[1], "-r"))
- ; /* no-op */
- else if (!strcmp(argv[1], "-s"))
- ; /* no-op */
- else if (!strcmp(argv[1], "-c"))
- combine_merges = 1;
- else if (!strcmp(argv[1], "--cc"))
- dense_combined_merges = combine_merges = 1;
- else {
- int diff_opt_cnt;
- diff_opt_cnt = diff_opt_parse(&rev.diffopt,
- argv+1, argc-1);
- if (diff_opt_cnt < 0)
- usage(diff_files_usage);
- else if (diff_opt_cnt) {
- argv += diff_opt_cnt;
- argc -= diff_opt_cnt;
- continue;
- }
- else
- usage(diff_files_usage);
- }
+ else
+ usage(diff_files_usage);
argv++; argc--;
}
- if (dense_combined_merges)
- rev.diffopt.output_format = DIFF_FORMAT_PATCH;
-
- /* Find the directory, and set up the pathspec */
- pathspec = get_pathspec(prefix, argv + 1);
- entries = read_cache();
-
- if (diff_setup_done(&rev.diffopt) < 0)
+ /*
+ * Make sure there are NO revision (i.e. pending object) parameter,
+ * rev.max_count is reasonable (0 <= n <= 3),
+ * there is no other revision filtering parameters.
+ */
+ if (rev.pending_objects ||
+ rev.min_age != -1 || rev.max_age != -1)
usage(diff_files_usage);
-
- /* At this point, if argc == 1, then we are doing everything.
- * Otherwise argv[1] .. argv[argc-1] have the explicit paths.
+ /*
+ * Backward compatibility wart - "diff-files -s" used to
+ * defeat the common diff option "-s" which asked for
+ * DIFF_FORMAT_NO_OUTPUT.
*/
- if (entries < 0) {
- perror("read_cache");
- exit(1);
- }
-
- for (i = 0; i < entries; i++) {
- struct stat st;
- unsigned int oldmode, newmode;
- struct cache_entry *ce = active_cache[i];
- int changed;
-
- if (!ce_path_match(ce, pathspec))
- continue;
-
- if (ce_stage(ce)) {
- struct {
- struct combine_diff_path p;
- struct combine_diff_parent filler[5];
- } combine;
- int num_compare_stages = 0;
-
- combine.p.next = NULL;
- combine.p.len = ce_namelen(ce);
- combine.p.path = xmalloc(combine.p.len + 1);
- memcpy(combine.p.path, ce->name, combine.p.len);
- combine.p.path[combine.p.len] = 0;
- combine.p.mode = 0;
- memset(combine.p.sha1, 0, 20);
- memset(&combine.p.parent[0], 0,
- sizeof(combine.filler));
-
- while (i < entries) {
- struct cache_entry *nce = active_cache[i];
- int stage;
-
- if (strcmp(ce->name, nce->name))
- break;
-
- /* Stage #2 (ours) is the first parent,
- * stage #3 (theirs) is the second.
- */
- stage = ce_stage(nce);
- if (2 <= stage) {
- int mode = ntohl(nce->ce_mode);
- num_compare_stages++;
- memcpy(combine.p.parent[stage-2].sha1,
- nce->sha1, 20);
- combine.p.parent[stage-2].mode =
- canon_mode(mode);
- combine.p.parent[stage-2].status =
- DIFF_STATUS_MODIFIED;
- }
-
- /* diff against the proper unmerged stage */
- if (stage == diff_unmerged_stage)
- ce = nce;
- i++;
- }
- /*
- * Compensate for loop update
- */
- i--;
-
- if (combine_merges && num_compare_stages == 2) {
- show_combined_diff(&combine.p, 2,
- dense_combined_merges,
- &rev);
- free(combine.p.path);
- continue;
- }
- free(combine.p.path);
-
- /*
- * Show the diff for the 'ce' if we found the one
- * from the desired stage.
- */
- show_unmerge(ce->name);
- if (ce_stage(ce) != diff_unmerged_stage)
- continue;
- }
-
- if (lstat(ce->name, &st) < 0) {
- if (errno != ENOENT && errno != ENOTDIR) {
- perror(ce->name);
- continue;
- }
- if (silent)
- continue;
- show_file('-', ce);
- continue;
- }
- changed = ce_match_stat(ce, &st, 0);
- if (!changed && !rev.diffopt.find_copies_harder)
- continue;
- oldmode = ntohl(ce->ce_mode);
-
- newmode = canon_mode(st.st_mode);
- if (!trust_executable_bit &&
- S_ISREG(newmode) && S_ISREG(oldmode) &&
- ((newmode ^ oldmode) == 0111))
- newmode = oldmode;
- show_modified(oldmode, newmode,
- ce->sha1, (changed ? null_sha1 : ce->sha1),
- ce->name);
- }
- diffcore_std(&rev.diffopt);
- diff_flush(&rev.diffopt);
- return 0;
+ if (rev.diffopt.output_format == DIFF_FORMAT_NO_OUTPUT)
+ rev.diffopt.output_format = DIFF_FORMAT_RAW;
+ return run_diff_files(&rev, silent);
}
generated by cgit v0.10.2-6-g49f6 at 2024-04-25 15:54:56 (GMT)