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1 | #include "cache.h" | |
2 | #include "diff.h" | |
3 | #include "commit.h" | |
4 | #include "tag.h" | |
5 | #include "graph.h" | |
6 | #include "log-tree.h" | |
7 | #include "reflog-walk.h" | |
8 | #include "refs.h" | |
9 | #include "string-list.h" | |
10 | ||
11 | struct decoration name_decoration = { "object names" }; | |
12 | ||
13 | static void add_name_decoration(const char *prefix, const char *name, struct object *obj) | |
14 | { | |
15 | int plen = strlen(prefix); | |
16 | int nlen = strlen(name); | |
17 | struct name_decoration *res = xmalloc(sizeof(struct name_decoration) + plen + nlen); | |
18 | memcpy(res->name, prefix, plen); | |
19 | memcpy(res->name + plen, name, nlen + 1); | |
20 | res->next = add_decoration(&name_decoration, obj, res); | |
21 | } | |
22 | ||
23 | static int add_ref_decoration(const char *refname, const unsigned char *sha1, int flags, void *cb_data) | |
24 | { | |
25 | struct object *obj = parse_object(sha1); | |
26 | if (!obj) | |
27 | return 0; | |
28 | add_name_decoration("", refname, obj); | |
29 | while (obj->type == OBJ_TAG) { | |
30 | obj = ((struct tag *)obj)->tagged; | |
31 | if (!obj) | |
32 | break; | |
33 | add_name_decoration("tag: ", refname, obj); | |
34 | } | |
35 | return 0; | |
36 | } | |
37 | ||
38 | void load_ref_decorations(void) | |
39 | { | |
40 | static int loaded; | |
41 | if (!loaded) { | |
42 | loaded = 1; | |
43 | for_each_ref(add_ref_decoration, NULL); | |
44 | } | |
45 | } | |
46 | ||
47 | static void show_parents(struct commit *commit, int abbrev) | |
48 | { | |
49 | struct commit_list *p; | |
50 | for (p = commit->parents; p ; p = p->next) { | |
51 | struct commit *parent = p->item; | |
52 | printf(" %s", find_unique_abbrev(parent->object.sha1, abbrev)); | |
53 | } | |
54 | } | |
55 | ||
56 | void show_decorations(struct rev_info *opt, struct commit *commit) | |
57 | { | |
58 | const char *prefix; | |
59 | struct name_decoration *decoration; | |
60 | ||
61 | if (opt->show_source && commit->util) | |
62 | printf("\t%s", (char *) commit->util); | |
63 | if (!opt->show_decorations) | |
64 | return; | |
65 | decoration = lookup_decoration(&name_decoration, &commit->object); | |
66 | if (!decoration) | |
67 | return; | |
68 | prefix = " ("; | |
69 | while (decoration) { | |
70 | printf("%s%s", prefix, decoration->name); | |
71 | prefix = ", "; | |
72 | decoration = decoration->next; | |
73 | } | |
74 | putchar(')'); | |
75 | } | |
76 | ||
77 | /* | |
78 | * Search for "^[-A-Za-z]+: [^@]+@" pattern. It usually matches | |
79 | * Signed-off-by: and Acked-by: lines. | |
80 | */ | |
81 | static int detect_any_signoff(char *letter, int size) | |
82 | { | |
83 | char *cp; | |
84 | int seen_colon = 0; | |
85 | int seen_at = 0; | |
86 | int seen_name = 0; | |
87 | int seen_head = 0; | |
88 | ||
89 | cp = letter + size; | |
90 | while (letter <= --cp && *cp == '\n') | |
91 | continue; | |
92 | ||
93 | while (letter <= cp) { | |
94 | char ch = *cp--; | |
95 | if (ch == '\n') | |
96 | break; | |
97 | ||
98 | if (!seen_at) { | |
99 | if (ch == '@') | |
100 | seen_at = 1; | |
101 | continue; | |
102 | } | |
103 | if (!seen_colon) { | |
104 | if (ch == '@') | |
105 | return 0; | |
106 | else if (ch == ':') | |
107 | seen_colon = 1; | |
108 | else | |
109 | seen_name = 1; | |
110 | continue; | |
111 | } | |
112 | if (('A' <= ch && ch <= 'Z') || | |
113 | ('a' <= ch && ch <= 'z') || | |
114 | ch == '-') { | |
115 | seen_head = 1; | |
116 | continue; | |
117 | } | |
118 | /* no empty last line doesn't match */ | |
119 | return 0; | |
120 | } | |
121 | return seen_head && seen_name; | |
122 | } | |
123 | ||
124 | static void append_signoff(struct strbuf *sb, const char *signoff) | |
125 | { | |
126 | static const char signed_off_by[] = "Signed-off-by: "; | |
127 | size_t signoff_len = strlen(signoff); | |
128 | int has_signoff = 0; | |
129 | char *cp; | |
130 | ||
131 | cp = sb->buf; | |
132 | ||
133 | /* First see if we already have the sign-off by the signer */ | |
134 | while ((cp = strstr(cp, signed_off_by))) { | |
135 | ||
136 | has_signoff = 1; | |
137 | ||
138 | cp += strlen(signed_off_by); | |
139 | if (cp + signoff_len >= sb->buf + sb->len) | |
140 | break; | |
141 | if (strncmp(cp, signoff, signoff_len)) | |
142 | continue; | |
143 | if (!isspace(cp[signoff_len])) | |
144 | continue; | |
145 | /* we already have him */ | |
146 | return; | |
147 | } | |
148 | ||
149 | if (!has_signoff) | |
150 | has_signoff = detect_any_signoff(sb->buf, sb->len); | |
151 | ||
152 | if (!has_signoff) | |
153 | strbuf_addch(sb, '\n'); | |
154 | ||
155 | strbuf_addstr(sb, signed_off_by); | |
156 | strbuf_add(sb, signoff, signoff_len); | |
157 | strbuf_addch(sb, '\n'); | |
158 | } | |
159 | ||
160 | static unsigned int digits_in_number(unsigned int number) | |
161 | { | |
162 | unsigned int i = 10, result = 1; | |
163 | while (i <= number) { | |
164 | i *= 10; | |
165 | result++; | |
166 | } | |
167 | return result; | |
168 | } | |
169 | ||
170 | static int has_non_ascii(const char *s) | |
171 | { | |
172 | int ch; | |
173 | if (!s) | |
174 | return 0; | |
175 | while ((ch = *s++) != '\0') { | |
176 | if (non_ascii(ch)) | |
177 | return 1; | |
178 | } | |
179 | return 0; | |
180 | } | |
181 | ||
182 | void get_patch_filename(struct commit *commit, int nr, const char *suffix, | |
183 | struct strbuf *buf) | |
184 | { | |
185 | int suffix_len = strlen(suffix) + 1; | |
186 | int start_len = buf->len; | |
187 | ||
188 | strbuf_addf(buf, commit ? "%04d-" : "%d", nr); | |
189 | if (commit) { | |
190 | format_commit_message(commit, "%f", buf, DATE_NORMAL); | |
191 | /* | |
192 | * Replace characters at the end with the suffix if the | |
193 | * filename is too long | |
194 | */ | |
195 | if (buf->len + suffix_len > FORMAT_PATCH_NAME_MAX + start_len) | |
196 | strbuf_splice(buf, | |
197 | start_len + FORMAT_PATCH_NAME_MAX - suffix_len, | |
198 | suffix_len, suffix, suffix_len); | |
199 | else | |
200 | strbuf_addstr(buf, suffix); | |
201 | } | |
202 | } | |
203 | ||
204 | void log_write_email_headers(struct rev_info *opt, struct commit *commit, | |
205 | const char **subject_p, | |
206 | const char **extra_headers_p, | |
207 | int *need_8bit_cte_p) | |
208 | { | |
209 | const char *subject = NULL; | |
210 | const char *extra_headers = opt->extra_headers; | |
211 | const char *name = sha1_to_hex(commit->object.sha1); | |
212 | ||
213 | *need_8bit_cte_p = 0; /* unknown */ | |
214 | if (opt->total > 0) { | |
215 | static char buffer[64]; | |
216 | snprintf(buffer, sizeof(buffer), | |
217 | "Subject: [%s %0*d/%d] ", | |
218 | opt->subject_prefix, | |
219 | digits_in_number(opt->total), | |
220 | opt->nr, opt->total); | |
221 | subject = buffer; | |
222 | } else if (opt->total == 0 && opt->subject_prefix && *opt->subject_prefix) { | |
223 | static char buffer[256]; | |
224 | snprintf(buffer, sizeof(buffer), | |
225 | "Subject: [%s] ", | |
226 | opt->subject_prefix); | |
227 | subject = buffer; | |
228 | } else { | |
229 | subject = "Subject: "; | |
230 | } | |
231 | ||
232 | printf("From %s Mon Sep 17 00:00:00 2001\n", name); | |
233 | graph_show_oneline(opt->graph); | |
234 | if (opt->message_id) { | |
235 | printf("Message-Id: <%s>\n", opt->message_id); | |
236 | graph_show_oneline(opt->graph); | |
237 | } | |
238 | if (opt->ref_message_ids && opt->ref_message_ids->nr > 0) { | |
239 | int i, n; | |
240 | n = opt->ref_message_ids->nr; | |
241 | printf("In-Reply-To: <%s>\n", opt->ref_message_ids->items[n-1].string); | |
242 | for (i = 0; i < n; i++) | |
243 | printf("%s<%s>\n", (i > 0 ? "\t" : "References: "), | |
244 | opt->ref_message_ids->items[i].string); | |
245 | graph_show_oneline(opt->graph); | |
246 | } | |
247 | if (opt->mime_boundary) { | |
248 | static char subject_buffer[1024]; | |
249 | static char buffer[1024]; | |
250 | struct strbuf filename = STRBUF_INIT; | |
251 | *need_8bit_cte_p = -1; /* NEVER */ | |
252 | snprintf(subject_buffer, sizeof(subject_buffer) - 1, | |
253 | "%s" | |
254 | "MIME-Version: 1.0\n" | |
255 | "Content-Type: multipart/mixed;" | |
256 | " boundary=\"%s%s\"\n" | |
257 | "\n" | |
258 | "This is a multi-part message in MIME " | |
259 | "format.\n" | |
260 | "--%s%s\n" | |
261 | "Content-Type: text/plain; " | |
262 | "charset=UTF-8; format=fixed\n" | |
263 | "Content-Transfer-Encoding: 8bit\n\n", | |
264 | extra_headers ? extra_headers : "", | |
265 | mime_boundary_leader, opt->mime_boundary, | |
266 | mime_boundary_leader, opt->mime_boundary); | |
267 | extra_headers = subject_buffer; | |
268 | ||
269 | get_patch_filename(opt->numbered_files ? NULL : commit, opt->nr, | |
270 | opt->patch_suffix, &filename); | |
271 | snprintf(buffer, sizeof(buffer) - 1, | |
272 | "\n--%s%s\n" | |
273 | "Content-Type: text/x-patch;" | |
274 | " name=\"%s\"\n" | |
275 | "Content-Transfer-Encoding: 8bit\n" | |
276 | "Content-Disposition: %s;" | |
277 | " filename=\"%s\"\n\n", | |
278 | mime_boundary_leader, opt->mime_boundary, | |
279 | filename.buf, | |
280 | opt->no_inline ? "attachment" : "inline", | |
281 | filename.buf); | |
282 | opt->diffopt.stat_sep = buffer; | |
283 | strbuf_release(&filename); | |
284 | } | |
285 | *subject_p = subject; | |
286 | *extra_headers_p = extra_headers; | |
287 | } | |
288 | ||
289 | void show_log(struct rev_info *opt) | |
290 | { | |
291 | struct strbuf msgbuf = STRBUF_INIT; | |
292 | struct log_info *log = opt->loginfo; | |
293 | struct commit *commit = log->commit, *parent = log->parent; | |
294 | int abbrev = opt->diffopt.abbrev; | |
295 | int abbrev_commit = opt->abbrev_commit ? opt->abbrev : 40; | |
296 | const char *subject = NULL, *extra_headers = opt->extra_headers; | |
297 | int need_8bit_cte = 0; | |
298 | ||
299 | opt->loginfo = NULL; | |
300 | if (!opt->verbose_header) { | |
301 | graph_show_commit(opt->graph); | |
302 | ||
303 | if (!opt->graph) { | |
304 | if (commit->object.flags & BOUNDARY) | |
305 | putchar('-'); | |
306 | else if (commit->object.flags & UNINTERESTING) | |
307 | putchar('^'); | |
308 | else if (opt->left_right) { | |
309 | if (commit->object.flags & SYMMETRIC_LEFT) | |
310 | putchar('<'); | |
311 | else | |
312 | putchar('>'); | |
313 | } | |
314 | } | |
315 | fputs(find_unique_abbrev(commit->object.sha1, abbrev_commit), stdout); | |
316 | if (opt->print_parents) | |
317 | show_parents(commit, abbrev_commit); | |
318 | show_decorations(opt, commit); | |
319 | if (opt->graph && !graph_is_commit_finished(opt->graph)) { | |
320 | putchar('\n'); | |
321 | graph_show_remainder(opt->graph); | |
322 | } | |
323 | putchar(opt->diffopt.line_termination); | |
324 | return; | |
325 | } | |
326 | ||
327 | /* | |
328 | * If use_terminator is set, add a newline at the end of the entry. | |
329 | * Otherwise, add a diffopt.line_termination character before all | |
330 | * entries but the first. (IOW, as a separator between entries) | |
331 | */ | |
332 | if (opt->shown_one && !opt->use_terminator) { | |
333 | /* | |
334 | * If entries are separated by a newline, the output | |
335 | * should look human-readable. If the last entry ended | |
336 | * with a newline, print the graph output before this | |
337 | * newline. Otherwise it will end up as a completely blank | |
338 | * line and will look like a gap in the graph. | |
339 | * | |
340 | * If the entry separator is not a newline, the output is | |
341 | * primarily intended for programmatic consumption, and we | |
342 | * never want the extra graph output before the entry | |
343 | * separator. | |
344 | */ | |
345 | if (opt->diffopt.line_termination == '\n' && | |
346 | !opt->missing_newline) | |
347 | graph_show_padding(opt->graph); | |
348 | putchar(opt->diffopt.line_termination); | |
349 | } | |
350 | opt->shown_one = 1; | |
351 | ||
352 | /* | |
353 | * If the history graph was requested, | |
354 | * print the graph, up to this commit's line | |
355 | */ | |
356 | graph_show_commit(opt->graph); | |
357 | ||
358 | /* | |
359 | * Print header line of header.. | |
360 | */ | |
361 | ||
362 | if (opt->commit_format == CMIT_FMT_EMAIL) { | |
363 | log_write_email_headers(opt, commit, &subject, &extra_headers, | |
364 | &need_8bit_cte); | |
365 | } else if (opt->commit_format != CMIT_FMT_USERFORMAT) { | |
366 | fputs(diff_get_color_opt(&opt->diffopt, DIFF_COMMIT), stdout); | |
367 | if (opt->commit_format != CMIT_FMT_ONELINE) | |
368 | fputs("commit ", stdout); | |
369 | ||
370 | if (!opt->graph) { | |
371 | if (commit->object.flags & BOUNDARY) | |
372 | putchar('-'); | |
373 | else if (commit->object.flags & UNINTERESTING) | |
374 | putchar('^'); | |
375 | else if (opt->left_right) { | |
376 | if (commit->object.flags & SYMMETRIC_LEFT) | |
377 | putchar('<'); | |
378 | else | |
379 | putchar('>'); | |
380 | } | |
381 | } | |
382 | fputs(find_unique_abbrev(commit->object.sha1, abbrev_commit), | |
383 | stdout); | |
384 | if (opt->print_parents) | |
385 | show_parents(commit, abbrev_commit); | |
386 | if (parent) | |
387 | printf(" (from %s)", | |
388 | find_unique_abbrev(parent->object.sha1, | |
389 | abbrev_commit)); | |
390 | show_decorations(opt, commit); | |
391 | printf("%s", diff_get_color_opt(&opt->diffopt, DIFF_RESET)); | |
392 | if (opt->commit_format == CMIT_FMT_ONELINE) { | |
393 | putchar(' '); | |
394 | } else { | |
395 | putchar('\n'); | |
396 | graph_show_oneline(opt->graph); | |
397 | } | |
398 | if (opt->reflog_info) { | |
399 | /* | |
400 | * setup_revisions() ensures that opt->reflog_info | |
401 | * and opt->graph cannot both be set, | |
402 | * so we don't need to worry about printing the | |
403 | * graph info here. | |
404 | */ | |
405 | show_reflog_message(opt->reflog_info, | |
406 | opt->commit_format == CMIT_FMT_ONELINE, | |
407 | opt->date_mode); | |
408 | if (opt->commit_format == CMIT_FMT_ONELINE) | |
409 | return; | |
410 | } | |
411 | } | |
412 | ||
413 | if (!commit->buffer) | |
414 | return; | |
415 | ||
416 | /* | |
417 | * And then the pretty-printed message itself | |
418 | */ | |
419 | if (need_8bit_cte >= 0) | |
420 | need_8bit_cte = has_non_ascii(opt->add_signoff); | |
421 | pretty_print_commit(opt->commit_format, commit, &msgbuf, | |
422 | abbrev, subject, extra_headers, opt->date_mode, | |
423 | need_8bit_cte); | |
424 | ||
425 | if (opt->add_signoff) | |
426 | append_signoff(&msgbuf, opt->add_signoff); | |
427 | if (opt->show_log_size) { | |
428 | printf("log size %i\n", (int)msgbuf.len); | |
429 | graph_show_oneline(opt->graph); | |
430 | } | |
431 | ||
432 | /* | |
433 | * Set opt->missing_newline if msgbuf doesn't | |
434 | * end in a newline (including if it is empty) | |
435 | */ | |
436 | if (!msgbuf.len || msgbuf.buf[msgbuf.len - 1] != '\n') | |
437 | opt->missing_newline = 1; | |
438 | else | |
439 | opt->missing_newline = 0; | |
440 | ||
441 | if (opt->graph) | |
442 | graph_show_commit_msg(opt->graph, &msgbuf); | |
443 | else | |
444 | fwrite(msgbuf.buf, sizeof(char), msgbuf.len, stdout); | |
445 | if (opt->use_terminator) { | |
446 | if (!opt->missing_newline) | |
447 | graph_show_padding(opt->graph); | |
448 | putchar('\n'); | |
449 | } | |
450 | ||
451 | strbuf_release(&msgbuf); | |
452 | } | |
453 | ||
454 | int log_tree_diff_flush(struct rev_info *opt) | |
455 | { | |
456 | diffcore_std(&opt->diffopt); | |
457 | ||
458 | if (diff_queue_is_empty()) { | |
459 | int saved_fmt = opt->diffopt.output_format; | |
460 | opt->diffopt.output_format = DIFF_FORMAT_NO_OUTPUT; | |
461 | diff_flush(&opt->diffopt); | |
462 | opt->diffopt.output_format = saved_fmt; | |
463 | return 0; | |
464 | } | |
465 | ||
466 | if (opt->loginfo && !opt->no_commit_id) { | |
467 | /* When showing a verbose header (i.e. log message), | |
468 | * and not in --pretty=oneline format, we would want | |
469 | * an extra newline between the end of log and the | |
470 | * output for readability. | |
471 | */ | |
472 | show_log(opt); | |
473 | if ((opt->diffopt.output_format & ~DIFF_FORMAT_NO_OUTPUT) && | |
474 | opt->verbose_header && | |
475 | opt->commit_format != CMIT_FMT_ONELINE) { | |
476 | int pch = DIFF_FORMAT_DIFFSTAT | DIFF_FORMAT_PATCH; | |
477 | if ((pch & opt->diffopt.output_format) == pch) | |
478 | printf("---"); | |
479 | putchar('\n'); | |
480 | } | |
481 | } | |
482 | diff_flush(&opt->diffopt); | |
483 | return 1; | |
484 | } | |
485 | ||
486 | static int do_diff_combined(struct rev_info *opt, struct commit *commit) | |
487 | { | |
488 | unsigned const char *sha1 = commit->object.sha1; | |
489 | ||
490 | diff_tree_combined_merge(sha1, opt->dense_combined_merges, opt); | |
491 | return !opt->loginfo; | |
492 | } | |
493 | ||
494 | /* | |
495 | * Show the diff of a commit. | |
496 | * | |
497 | * Return true if we printed any log info messages | |
498 | */ | |
499 | static int log_tree_diff(struct rev_info *opt, struct commit *commit, struct log_info *log) | |
500 | { | |
501 | int showed_log; | |
502 | struct commit_list *parents; | |
503 | unsigned const char *sha1 = commit->object.sha1; | |
504 | ||
505 | if (!opt->diff && !DIFF_OPT_TST(&opt->diffopt, EXIT_WITH_STATUS)) | |
506 | return 0; | |
507 | ||
508 | /* Root commit? */ | |
509 | parents = commit->parents; | |
510 | if (!parents) { | |
511 | if (opt->show_root_diff) { | |
512 | diff_root_tree_sha1(sha1, "", &opt->diffopt); | |
513 | log_tree_diff_flush(opt); | |
514 | } | |
515 | return !opt->loginfo; | |
516 | } | |
517 | ||
518 | /* More than one parent? */ | |
519 | if (parents && parents->next) { | |
520 | if (opt->ignore_merges) | |
521 | return 0; | |
522 | else if (opt->combine_merges) | |
523 | return do_diff_combined(opt, commit); | |
524 | ||
525 | /* If we show individual diffs, show the parent info */ | |
526 | log->parent = parents->item; | |
527 | } | |
528 | ||
529 | showed_log = 0; | |
530 | for (;;) { | |
531 | struct commit *parent = parents->item; | |
532 | ||
533 | diff_tree_sha1(parent->object.sha1, sha1, "", &opt->diffopt); | |
534 | log_tree_diff_flush(opt); | |
535 | ||
536 | showed_log |= !opt->loginfo; | |
537 | ||
538 | /* Set up the log info for the next parent, if any.. */ | |
539 | parents = parents->next; | |
540 | if (!parents) | |
541 | break; | |
542 | log->parent = parents->item; | |
543 | opt->loginfo = log; | |
544 | } | |
545 | return showed_log; | |
546 | } | |
547 | ||
548 | int log_tree_commit(struct rev_info *opt, struct commit *commit) | |
549 | { | |
550 | struct log_info log; | |
551 | int shown; | |
552 | ||
553 | log.commit = commit; | |
554 | log.parent = NULL; | |
555 | opt->loginfo = &log; | |
556 | ||
557 | shown = log_tree_diff(opt, commit, &log); | |
558 | if (!shown && opt->loginfo && opt->always_show_header) { | |
559 | log.parent = NULL; | |
560 | show_log(opt); | |
561 | shown = 1; | |
562 | } | |
563 | opt->loginfo = NULL; | |
564 | maybe_flush_or_die(stdout, "stdout"); | |
565 | return shown; | |
566 | } |