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Commit | Line | Data |
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d9c66f0b JS |
1 | #include "cache.h" |
2 | #include "range-diff.h" | |
3 | #include "string-list.h" | |
4 | #include "run-command.h" | |
5 | #include "argv-array.h" | |
6 | #include "hashmap.h" | |
7 | #include "xdiff-interface.h" | |
8 | #include "linear-assignment.h" | |
c8c5e43a | 9 | #include "diffcore.h" |
eb0be38c JS |
10 | #include "commit.h" |
11 | #include "pretty.h" | |
4eba1fe6 | 12 | #include "userdiff.h" |
b66885a3 | 13 | #include "apply.h" |
d9c66f0b JS |
14 | |
15 | struct patch_util { | |
16 | /* For the search for an exact match */ | |
17 | struct hashmap_entry e; | |
18 | const char *diff, *patch; | |
19 | ||
9dc46e02 | 20 | int i, shown; |
d9c66f0b JS |
21 | int diffsize; |
22 | size_t diff_offset; | |
23 | /* the index of the matching item in the other branch, or -1 */ | |
24 | int matching; | |
25 | struct object_id oid; | |
26 | }; | |
27 | ||
44b67cb6 TG |
28 | static size_t find_end_of_line(char *buffer, unsigned long size) |
29 | { | |
30 | char *eol = memchr(buffer, '\n', size); | |
31 | ||
32 | if (!eol) | |
33 | return size; | |
34 | ||
35 | *eol = '\0'; | |
36 | return eol + 1 - buffer; | |
37 | } | |
38 | ||
d9c66f0b JS |
39 | /* |
40 | * Reads the patches into a string list, with the `util` field being populated | |
41 | * as struct object_id (will need to be free()d). | |
42 | */ | |
43 | static int read_patches(const char *range, struct string_list *list) | |
44 | { | |
45 | struct child_process cp = CHILD_PROCESS_INIT; | |
44b67cb6 | 46 | struct strbuf buf = STRBUF_INIT, contents = STRBUF_INIT; |
d9c66f0b JS |
47 | struct patch_util *util = NULL; |
48 | int in_header = 1; | |
444e0969 | 49 | char *line, *current_filename = NULL; |
44b67cb6 TG |
50 | int offset, len; |
51 | size_t size; | |
d9c66f0b JS |
52 | |
53 | argv_array_pushl(&cp.args, "log", "--no-color", "-p", "--no-merges", | |
54 | "--reverse", "--date-order", "--decorate=no", | |
937b76ed | 55 | "--no-prefix", |
8d5ccb59 SB |
56 | /* |
57 | * Choose indicators that are not used anywhere | |
58 | * else in diffs, but still look reasonable | |
59 | * (e.g. will not be confusing when debugging) | |
60 | */ | |
61 | "--output-indicator-new=>", | |
62 | "--output-indicator-old=<", | |
63 | "--output-indicator-context=#", | |
d9c66f0b JS |
64 | "--no-abbrev-commit", range, |
65 | NULL); | |
66 | cp.out = -1; | |
67 | cp.no_stdin = 1; | |
68 | cp.git_cmd = 1; | |
69 | ||
70 | if (start_command(&cp)) | |
71 | return error_errno(_("could not start `log`")); | |
44b67cb6 | 72 | if (strbuf_read(&contents, cp.out, 0) < 0) { |
d9c66f0b JS |
73 | error_errno(_("could not read `log` output")); |
74 | finish_command(&cp); | |
75 | return -1; | |
76 | } | |
77 | ||
44b67cb6 TG |
78 | line = contents.buf; |
79 | size = contents.len; | |
80 | for (offset = 0; size > 0; offset += len, size -= len, line += len) { | |
d9c66f0b JS |
81 | const char *p; |
82 | ||
44b67cb6 TG |
83 | len = find_end_of_line(line, size); |
84 | line[len - 1] = '\0'; | |
85 | if (skip_prefix(line, "commit ", &p)) { | |
d9c66f0b JS |
86 | if (util) { |
87 | string_list_append(list, buf.buf)->util = util; | |
88 | strbuf_reset(&buf); | |
89 | } | |
90 | util = xcalloc(sizeof(*util), 1); | |
91 | if (get_oid(p, &util->oid)) { | |
92 | error(_("could not parse commit '%s'"), p); | |
93 | free(util); | |
94 | string_list_clear(list, 1); | |
95 | strbuf_release(&buf); | |
44b67cb6 | 96 | strbuf_release(&contents); |
d9c66f0b JS |
97 | finish_command(&cp); |
98 | return -1; | |
99 | } | |
100 | util->matching = -1; | |
101 | in_header = 1; | |
102 | continue; | |
103 | } | |
104 | ||
44b67cb6 | 105 | if (starts_with(line, "diff --git")) { |
b66885a3 TG |
106 | struct patch patch = { 0 }; |
107 | struct strbuf root = STRBUF_INIT; | |
108 | int linenr = 0; | |
109 | ||
d9c66f0b JS |
110 | in_header = 0; |
111 | strbuf_addch(&buf, '\n'); | |
112 | if (!util->diff_offset) | |
113 | util->diff_offset = buf.len; | |
b66885a3 | 114 | line[len - 1] = '\n'; |
937b76ed | 115 | len = parse_git_diff_header(&root, &linenr, 0, line, |
b66885a3 TG |
116 | len, size, &patch); |
117 | if (len < 0) | |
118 | die(_("could not parse git header '%.*s'"), (int)len, line); | |
119 | strbuf_addstr(&buf, " ## "); | |
120 | if (patch.is_new > 0) | |
121 | strbuf_addf(&buf, "%s (new)", patch.new_name); | |
122 | else if (patch.is_delete > 0) | |
123 | strbuf_addf(&buf, "%s (deleted)", patch.old_name); | |
124 | else if (patch.is_rename) | |
125 | strbuf_addf(&buf, "%s => %s", patch.old_name, patch.new_name); | |
126 | else | |
127 | strbuf_addstr(&buf, patch.new_name); | |
128 | ||
444e0969 TG |
129 | free(current_filename); |
130 | if (patch.is_delete > 0) | |
131 | current_filename = xstrdup(patch.old_name); | |
132 | else | |
133 | current_filename = xstrdup(patch.new_name); | |
134 | ||
b66885a3 TG |
135 | if (patch.new_mode && patch.old_mode && |
136 | patch.old_mode != patch.new_mode) | |
137 | strbuf_addf(&buf, " (mode change %06o => %06o)", | |
138 | patch.old_mode, patch.new_mode); | |
139 | ||
140 | strbuf_addstr(&buf, " ##"); | |
d9c66f0b | 141 | } else if (in_header) { |
44b67cb6 | 142 | if (starts_with(line, "Author: ")) { |
499352c2 | 143 | strbuf_addstr(&buf, " ## Metadata ##\n"); |
44b67cb6 | 144 | strbuf_addstr(&buf, line); |
d9c66f0b | 145 | strbuf_addstr(&buf, "\n\n"); |
499352c2 | 146 | strbuf_addstr(&buf, " ## Commit message ##\n"); |
9f726e1b DL |
147 | } else if (starts_with(line, "Notes") && |
148 | line[strlen(line) - 1] == ':') { | |
149 | strbuf_addstr(&buf, "\n\n"); | |
150 | /* strip the trailing colon */ | |
151 | strbuf_addf(&buf, " ## %.*s ##\n", | |
152 | (int)(strlen(line) - 1), line); | |
44b67cb6 TG |
153 | } else if (starts_with(line, " ")) { |
154 | p = line + len - 2; | |
155 | while (isspace(*p) && p >= line) | |
156 | p--; | |
157 | strbuf_add(&buf, line, p - line + 1); | |
d9c66f0b JS |
158 | strbuf_addch(&buf, '\n'); |
159 | } | |
160 | continue; | |
e1db2630 TG |
161 | } else if (skip_prefix(line, "@@ ", &p)) { |
162 | p = strstr(p, "@@"); | |
444e0969 TG |
163 | strbuf_addstr(&buf, "@@"); |
164 | if (current_filename && p[2]) | |
165 | strbuf_addf(&buf, " %s:", current_filename); | |
166 | if (p) | |
167 | strbuf_addstr(&buf, p + 2); | |
b66885a3 | 168 | } else if (!line[0]) |
d9c66f0b JS |
169 | /* |
170 | * A completely blank (not ' \n', which is context) | |
171 | * line is not valid in a diff. We skip it | |
172 | * silently, because this neatly handles the blank | |
173 | * separator line between commits in git-log | |
174 | * output. | |
d9c66f0b JS |
175 | */ |
176 | continue; | |
44b67cb6 | 177 | else if (line[0] == '>') { |
8d5ccb59 | 178 | strbuf_addch(&buf, '+'); |
44b67cb6 TG |
179 | strbuf_addstr(&buf, line + 1); |
180 | } else if (line[0] == '<') { | |
8d5ccb59 | 181 | strbuf_addch(&buf, '-'); |
44b67cb6 TG |
182 | strbuf_addstr(&buf, line + 1); |
183 | } else if (line[0] == '#') { | |
8d5ccb59 | 184 | strbuf_addch(&buf, ' '); |
44b67cb6 | 185 | strbuf_addstr(&buf, line + 1); |
8d5ccb59 | 186 | } else { |
2543a641 | 187 | strbuf_addch(&buf, ' '); |
44b67cb6 | 188 | strbuf_addstr(&buf, line); |
8d5ccb59 | 189 | } |
d9c66f0b JS |
190 | |
191 | strbuf_addch(&buf, '\n'); | |
192 | util->diffsize++; | |
193 | } | |
44b67cb6 | 194 | strbuf_release(&contents); |
d9c66f0b JS |
195 | |
196 | if (util) | |
197 | string_list_append(list, buf.buf)->util = util; | |
198 | strbuf_release(&buf); | |
444e0969 | 199 | free(current_filename); |
d9c66f0b JS |
200 | |
201 | if (finish_command(&cp)) | |
202 | return -1; | |
203 | ||
204 | return 0; | |
205 | } | |
206 | ||
207 | static int patch_util_cmp(const void *dummy, const struct patch_util *a, | |
1ca69225 | 208 | const struct patch_util *b, const char *keydata) |
d9c66f0b JS |
209 | { |
210 | return strcmp(a->diff, keydata ? keydata : b->diff); | |
211 | } | |
212 | ||
213 | static void find_exact_matches(struct string_list *a, struct string_list *b) | |
214 | { | |
215 | struct hashmap map; | |
216 | int i; | |
217 | ||
218 | hashmap_init(&map, (hashmap_cmp_fn)patch_util_cmp, NULL, 0); | |
219 | ||
220 | /* First, add the patches of a to a hash map */ | |
221 | for (i = 0; i < a->nr; i++) { | |
222 | struct patch_util *util = a->items[i].util; | |
223 | ||
224 | util->i = i; | |
225 | util->patch = a->items[i].string; | |
226 | util->diff = util->patch + util->diff_offset; | |
d22245a2 | 227 | hashmap_entry_init(&util->e, strhash(util->diff)); |
b94e5c1d | 228 | hashmap_add(&map, &util->e); |
d9c66f0b JS |
229 | } |
230 | ||
231 | /* Now try to find exact matches in b */ | |
232 | for (i = 0; i < b->nr; i++) { | |
233 | struct patch_util *util = b->items[i].util, *other; | |
234 | ||
235 | util->i = i; | |
236 | util->patch = b->items[i].string; | |
237 | util->diff = util->patch + util->diff_offset; | |
d22245a2 | 238 | hashmap_entry_init(&util->e, strhash(util->diff)); |
404ab78e | 239 | other = hashmap_remove_entry(&map, util, e, NULL); |
d9c66f0b JS |
240 | if (other) { |
241 | if (other->matching >= 0) | |
242 | BUG("already assigned!"); | |
243 | ||
244 | other->matching = i; | |
245 | util->matching = other->i; | |
246 | } | |
247 | } | |
248 | ||
c8e424c9 | 249 | hashmap_free(&map); |
d9c66f0b JS |
250 | } |
251 | ||
252 | static void diffsize_consume(void *data, char *line, unsigned long len) | |
253 | { | |
254 | (*(int *)data)++; | |
255 | } | |
256 | ||
d2eb8093 JK |
257 | static void diffsize_hunk(void *data, long ob, long on, long nb, long nn, |
258 | const char *funcline, long funclen) | |
259 | { | |
260 | diffsize_consume(data, NULL, 0); | |
261 | } | |
262 | ||
d9c66f0b JS |
263 | static int diffsize(const char *a, const char *b) |
264 | { | |
265 | xpparam_t pp = { 0 }; | |
266 | xdemitconf_t cfg = { 0 }; | |
267 | mmfile_t mf1, mf2; | |
268 | int count = 0; | |
269 | ||
270 | mf1.ptr = (char *)a; | |
271 | mf1.size = strlen(a); | |
272 | mf2.ptr = (char *)b; | |
273 | mf2.size = strlen(b); | |
274 | ||
275 | cfg.ctxlen = 3; | |
d2eb8093 JK |
276 | if (!xdi_diff_outf(&mf1, &mf2, |
277 | diffsize_hunk, diffsize_consume, &count, | |
278 | &pp, &cfg)) | |
d9c66f0b JS |
279 | return count; |
280 | ||
281 | error(_("failed to generate diff")); | |
282 | return COST_MAX; | |
283 | } | |
284 | ||
285 | static void get_correspondences(struct string_list *a, struct string_list *b, | |
286 | int creation_factor) | |
287 | { | |
288 | int n = a->nr + b->nr; | |
289 | int *cost, c, *a2b, *b2a; | |
290 | int i, j; | |
291 | ||
292 | ALLOC_ARRAY(cost, st_mult(n, n)); | |
293 | ALLOC_ARRAY(a2b, n); | |
294 | ALLOC_ARRAY(b2a, n); | |
295 | ||
296 | for (i = 0; i < a->nr; i++) { | |
297 | struct patch_util *a_util = a->items[i].util; | |
298 | ||
299 | for (j = 0; j < b->nr; j++) { | |
300 | struct patch_util *b_util = b->items[j].util; | |
301 | ||
302 | if (a_util->matching == j) | |
303 | c = 0; | |
304 | else if (a_util->matching < 0 && b_util->matching < 0) | |
305 | c = diffsize(a_util->diff, b_util->diff); | |
306 | else | |
307 | c = COST_MAX; | |
308 | cost[i + n * j] = c; | |
309 | } | |
310 | ||
311 | c = a_util->matching < 0 ? | |
312 | a_util->diffsize * creation_factor / 100 : COST_MAX; | |
313 | for (j = b->nr; j < n; j++) | |
314 | cost[i + n * j] = c; | |
315 | } | |
316 | ||
317 | for (j = 0; j < b->nr; j++) { | |
318 | struct patch_util *util = b->items[j].util; | |
319 | ||
320 | c = util->matching < 0 ? | |
321 | util->diffsize * creation_factor / 100 : COST_MAX; | |
322 | for (i = a->nr; i < n; i++) | |
323 | cost[i + n * j] = c; | |
324 | } | |
325 | ||
326 | for (i = a->nr; i < n; i++) | |
327 | for (j = b->nr; j < n; j++) | |
328 | cost[i + n * j] = 0; | |
329 | ||
330 | compute_assignment(n, n, cost, a2b, b2a); | |
331 | ||
332 | for (i = 0; i < a->nr; i++) | |
333 | if (a2b[i] >= 0 && a2b[i] < b->nr) { | |
334 | struct patch_util *a_util = a->items[i].util; | |
335 | struct patch_util *b_util = b->items[a2b[i]].util; | |
336 | ||
337 | a_util->matching = a2b[i]; | |
338 | b_util->matching = i; | |
339 | } | |
340 | ||
341 | free(cost); | |
342 | free(a2b); | |
343 | free(b2a); | |
344 | } | |
345 | ||
faa1df86 | 346 | static void output_pair_header(struct diff_options *diffopt, |
d1f87a2d | 347 | int patch_no_width, |
faa1df86 | 348 | struct strbuf *buf, |
eb0be38c JS |
349 | struct strbuf *dashes, |
350 | struct patch_util *a_util, | |
351 | struct patch_util *b_util) | |
d9c66f0b | 352 | { |
eb0be38c JS |
353 | struct object_id *oid = a_util ? &a_util->oid : &b_util->oid; |
354 | struct commit *commit; | |
faa1df86 JS |
355 | char status; |
356 | const char *color_reset = diff_get_color_opt(diffopt, DIFF_RESET); | |
357 | const char *color_old = diff_get_color_opt(diffopt, DIFF_FILE_OLD); | |
358 | const char *color_new = diff_get_color_opt(diffopt, DIFF_FILE_NEW); | |
359 | const char *color_commit = diff_get_color_opt(diffopt, DIFF_COMMIT); | |
360 | const char *color; | |
eb0be38c JS |
361 | |
362 | if (!dashes->len) | |
363 | strbuf_addchars(dashes, '-', | |
364 | strlen(find_unique_abbrev(oid, | |
365 | DEFAULT_ABBREV))); | |
366 | ||
faa1df86 JS |
367 | if (!b_util) { |
368 | color = color_old; | |
369 | status = '<'; | |
370 | } else if (!a_util) { | |
371 | color = color_new; | |
372 | status = '>'; | |
373 | } else if (strcmp(a_util->patch, b_util->patch)) { | |
374 | color = color_commit; | |
375 | status = '!'; | |
376 | } else { | |
377 | color = color_commit; | |
378 | status = '='; | |
379 | } | |
380 | ||
eb0be38c | 381 | strbuf_reset(buf); |
faa1df86 | 382 | strbuf_addstr(buf, status == '!' ? color_old : color); |
eb0be38c | 383 | if (!a_util) |
d1f87a2d | 384 | strbuf_addf(buf, "%*s: %s ", patch_no_width, "-", dashes->buf); |
eb0be38c | 385 | else |
d1f87a2d | 386 | strbuf_addf(buf, "%*d: %s ", patch_no_width, a_util->i + 1, |
eb0be38c JS |
387 | find_unique_abbrev(&a_util->oid, DEFAULT_ABBREV)); |
388 | ||
faa1df86 JS |
389 | if (status == '!') |
390 | strbuf_addf(buf, "%s%s", color_reset, color); | |
391 | strbuf_addch(buf, status); | |
392 | if (status == '!') | |
393 | strbuf_addf(buf, "%s%s", color_reset, color_new); | |
eb0be38c JS |
394 | |
395 | if (!b_util) | |
d1f87a2d | 396 | strbuf_addf(buf, " %*s: %s", patch_no_width, "-", dashes->buf); |
eb0be38c | 397 | else |
d1f87a2d | 398 | strbuf_addf(buf, " %*d: %s", patch_no_width, b_util->i + 1, |
eb0be38c JS |
399 | find_unique_abbrev(&b_util->oid, DEFAULT_ABBREV)); |
400 | ||
401 | commit = lookup_commit_reference(the_repository, oid); | |
402 | if (commit) { | |
faa1df86 JS |
403 | if (status == '!') |
404 | strbuf_addf(buf, "%s%s", color_reset, color); | |
405 | ||
eb0be38c JS |
406 | strbuf_addch(buf, ' '); |
407 | pp_commit_easy(CMIT_FMT_ONELINE, commit, buf); | |
408 | } | |
faa1df86 | 409 | strbuf_addf(buf, "%s\n", color_reset); |
eb0be38c | 410 | |
87f1b2d4 | 411 | fwrite(buf->buf, buf->len, 1, diffopt->file); |
d9c66f0b JS |
412 | } |
413 | ||
499352c2 TG |
414 | static struct userdiff_driver section_headers = { |
415 | .funcname = { "^ ## (.*) ##$\n" | |
416 | "^.?@@ (.*)$", REG_EXTENDED } | |
4eba1fe6 JS |
417 | }; |
418 | ||
c8c5e43a JS |
419 | static struct diff_filespec *get_filespec(const char *name, const char *p) |
420 | { | |
421 | struct diff_filespec *spec = alloc_filespec(name); | |
422 | ||
0e573e8f | 423 | fill_filespec(spec, &null_oid, 0, 0100644); |
c8c5e43a JS |
424 | spec->data = (char *)p; |
425 | spec->size = strlen(p); | |
426 | spec->should_munmap = 0; | |
427 | spec->is_stdin = 1; | |
499352c2 | 428 | spec->driver = §ion_headers; |
c8c5e43a JS |
429 | |
430 | return spec; | |
431 | } | |
432 | ||
433 | static void patch_diff(const char *a, const char *b, | |
1ca69225 | 434 | struct diff_options *diffopt) |
c8c5e43a JS |
435 | { |
436 | diff_queue(&diff_queued_diff, | |
437 | get_filespec("a", a), get_filespec("b", b)); | |
438 | ||
439 | diffcore_std(diffopt); | |
440 | diff_flush(diffopt); | |
441 | } | |
442 | ||
443 | static void output(struct string_list *a, struct string_list *b, | |
444 | struct diff_options *diffopt) | |
d9c66f0b | 445 | { |
eb0be38c | 446 | struct strbuf buf = STRBUF_INIT, dashes = STRBUF_INIT; |
d1f87a2d | 447 | int patch_no_width = decimal_width(1 + (a->nr > b->nr ? a->nr : b->nr)); |
9dc46e02 JS |
448 | int i = 0, j = 0; |
449 | ||
450 | /* | |
451 | * We assume the user is really more interested in the second argument | |
452 | * ("newer" version). To that end, we print the output in the order of | |
453 | * the RHS (the `b` parameter). To put the LHS (the `a` parameter) | |
454 | * commits that are no longer in the RHS into a good place, we place | |
455 | * them once we have shown all of their predecessors in the LHS. | |
456 | */ | |
457 | ||
458 | while (i < a->nr || j < b->nr) { | |
459 | struct patch_util *a_util, *b_util; | |
460 | a_util = i < a->nr ? a->items[i].util : NULL; | |
461 | b_util = j < b->nr ? b->items[j].util : NULL; | |
462 | ||
463 | /* Skip all the already-shown commits from the LHS. */ | |
464 | while (i < a->nr && a_util->shown) | |
465 | a_util = ++i < a->nr ? a->items[i].util : NULL; | |
466 | ||
467 | /* Show unmatched LHS commit whose predecessors were shown. */ | |
468 | if (i < a->nr && a_util->matching < 0) { | |
d1f87a2d | 469 | output_pair_header(diffopt, patch_no_width, |
faa1df86 | 470 | &buf, &dashes, a_util, NULL); |
9dc46e02 JS |
471 | i++; |
472 | continue; | |
473 | } | |
d9c66f0b | 474 | |
9dc46e02 JS |
475 | /* Show unmatched RHS commits. */ |
476 | while (j < b->nr && b_util->matching < 0) { | |
d1f87a2d | 477 | output_pair_header(diffopt, patch_no_width, |
faa1df86 | 478 | &buf, &dashes, NULL, b_util); |
9dc46e02 | 479 | b_util = ++j < b->nr ? b->items[j].util : NULL; |
d9c66f0b | 480 | } |
d9c66f0b | 481 | |
9dc46e02 JS |
482 | /* Show matching LHS/RHS pair. */ |
483 | if (j < b->nr) { | |
484 | a_util = a->items[b_util->matching].util; | |
d1f87a2d | 485 | output_pair_header(diffopt, patch_no_width, |
faa1df86 | 486 | &buf, &dashes, a_util, b_util); |
c8c5e43a JS |
487 | if (!(diffopt->output_format & DIFF_FORMAT_NO_OUTPUT)) |
488 | patch_diff(a->items[b_util->matching].string, | |
489 | b->items[j].string, diffopt); | |
9dc46e02 JS |
490 | a_util->shown = 1; |
491 | j++; | |
492 | } | |
d9c66f0b | 493 | } |
eb0be38c JS |
494 | strbuf_release(&buf); |
495 | strbuf_release(&dashes); | |
d9c66f0b JS |
496 | } |
497 | ||
73a834e9 ES |
498 | static struct strbuf *output_prefix_cb(struct diff_options *opt, void *data) |
499 | { | |
500 | return data; | |
501 | } | |
502 | ||
d9c66f0b | 503 | int show_range_diff(const char *range1, const char *range2, |
73a834e9 ES |
504 | int creation_factor, int dual_color, |
505 | struct diff_options *diffopt) | |
d9c66f0b JS |
506 | { |
507 | int res = 0; | |
508 | ||
509 | struct string_list branch1 = STRING_LIST_INIT_DUP; | |
510 | struct string_list branch2 = STRING_LIST_INIT_DUP; | |
511 | ||
512 | if (read_patches(range1, &branch1)) | |
513 | res = error(_("could not parse log for '%s'"), range1); | |
514 | if (!res && read_patches(range2, &branch2)) | |
515 | res = error(_("could not parse log for '%s'"), range2); | |
516 | ||
517 | if (!res) { | |
73a834e9 ES |
518 | struct diff_options opts; |
519 | struct strbuf indent = STRBUF_INIT; | |
520 | ||
d8981c3f JH |
521 | if (diffopt) |
522 | memcpy(&opts, diffopt, sizeof(opts)); | |
523 | else | |
524 | diff_setup(&opts); | |
525 | ||
a48e12ef ÆAB |
526 | if (!opts.output_format) |
527 | opts.output_format = DIFF_FORMAT_PATCH; | |
73a834e9 ES |
528 | opts.flags.suppress_diff_headers = 1; |
529 | opts.flags.dual_color_diffed_diffs = dual_color; | |
430be36e | 530 | opts.flags.suppress_hunk_header_line_count = 1; |
73a834e9 ES |
531 | opts.output_prefix = output_prefix_cb; |
532 | strbuf_addstr(&indent, " "); | |
533 | opts.output_prefix_data = &indent; | |
534 | diff_setup_done(&opts); | |
535 | ||
d9c66f0b JS |
536 | find_exact_matches(&branch1, &branch2); |
537 | get_correspondences(&branch1, &branch2, creation_factor); | |
73a834e9 ES |
538 | output(&branch1, &branch2, &opts); |
539 | ||
540 | strbuf_release(&indent); | |
d9c66f0b JS |
541 | } |
542 | ||
543 | string_list_clear(&branch1, 1); | |
544 | string_list_clear(&branch2, 1); | |
545 | ||
546 | return res; | |
547 | } |