Start preparing for 1.8.4.2
[alt-git.git] / log-tree.c
blob8534d91826f3cf05f810a28728ee8bd51649d819
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 #include "color.h"
11 #include "gpg-interface.h"
12 #include "sequencer.h"
13 #include "line-log.h"
15 struct decoration name_decoration = { "object names" };
17 enum decoration_type {
18 DECORATION_NONE = 0,
19 DECORATION_REF_LOCAL,
20 DECORATION_REF_REMOTE,
21 DECORATION_REF_TAG,
22 DECORATION_REF_STASH,
23 DECORATION_REF_HEAD,
24 DECORATION_GRAFTED,
27 static char decoration_colors[][COLOR_MAXLEN] = {
28 GIT_COLOR_RESET,
29 GIT_COLOR_BOLD_GREEN, /* REF_LOCAL */
30 GIT_COLOR_BOLD_RED, /* REF_REMOTE */
31 GIT_COLOR_BOLD_YELLOW, /* REF_TAG */
32 GIT_COLOR_BOLD_MAGENTA, /* REF_STASH */
33 GIT_COLOR_BOLD_CYAN, /* REF_HEAD */
34 GIT_COLOR_BOLD_BLUE, /* GRAFTED */
37 static const char *decorate_get_color(int decorate_use_color, enum decoration_type ix)
39 if (want_color(decorate_use_color))
40 return decoration_colors[ix];
41 return "";
44 static int parse_decorate_color_slot(const char *slot)
47 * We're comparing with 'ignore-case' on
48 * (because config.c sets them all tolower),
49 * but let's match the letters in the literal
50 * string values here with how they are
51 * documented in Documentation/config.txt, for
52 * consistency.
54 * We love being consistent, don't we?
56 if (!strcasecmp(slot, "branch"))
57 return DECORATION_REF_LOCAL;
58 if (!strcasecmp(slot, "remoteBranch"))
59 return DECORATION_REF_REMOTE;
60 if (!strcasecmp(slot, "tag"))
61 return DECORATION_REF_TAG;
62 if (!strcasecmp(slot, "stash"))
63 return DECORATION_REF_STASH;
64 if (!strcasecmp(slot, "HEAD"))
65 return DECORATION_REF_HEAD;
66 return -1;
69 int parse_decorate_color_config(const char *var, const int ofs, const char *value)
71 int slot = parse_decorate_color_slot(var + ofs);
72 if (slot < 0)
73 return 0;
74 if (!value)
75 return config_error_nonbool(var);
76 color_parse(value, var, decoration_colors[slot]);
77 return 0;
81 * log-tree.c uses DIFF_OPT_TST for determining whether to use color
82 * for showing the commit sha1, use the same check for --decorate
84 #define decorate_get_color_opt(o, ix) \
85 decorate_get_color((o)->use_color, ix)
87 static void add_name_decoration(enum decoration_type type, const char *name, struct object *obj)
89 int nlen = strlen(name);
90 struct name_decoration *res = xmalloc(sizeof(struct name_decoration) + nlen);
91 memcpy(res->name, name, nlen + 1);
92 res->type = type;
93 res->next = add_decoration(&name_decoration, obj, res);
96 static int add_ref_decoration(const char *refname, const unsigned char *sha1, int flags, void *cb_data)
98 struct object *obj;
99 enum decoration_type type = DECORATION_NONE;
101 if (!prefixcmp(refname, "refs/replace/")) {
102 unsigned char original_sha1[20];
103 if (!read_replace_refs)
104 return 0;
105 if (get_sha1_hex(refname + 13, original_sha1)) {
106 warning("invalid replace ref %s", refname);
107 return 0;
109 obj = parse_object(original_sha1);
110 if (obj)
111 add_name_decoration(DECORATION_GRAFTED, "replaced", obj);
112 return 0;
115 obj = parse_object(sha1);
116 if (!obj)
117 return 0;
119 if (!prefixcmp(refname, "refs/heads/"))
120 type = DECORATION_REF_LOCAL;
121 else if (!prefixcmp(refname, "refs/remotes/"))
122 type = DECORATION_REF_REMOTE;
123 else if (!prefixcmp(refname, "refs/tags/"))
124 type = DECORATION_REF_TAG;
125 else if (!strcmp(refname, "refs/stash"))
126 type = DECORATION_REF_STASH;
127 else if (!strcmp(refname, "HEAD"))
128 type = DECORATION_REF_HEAD;
130 if (!cb_data || *(int *)cb_data == DECORATE_SHORT_REFS)
131 refname = prettify_refname(refname);
132 add_name_decoration(type, refname, obj);
133 while (obj->type == OBJ_TAG) {
134 obj = ((struct tag *)obj)->tagged;
135 if (!obj)
136 break;
137 add_name_decoration(DECORATION_REF_TAG, refname, obj);
139 return 0;
142 static int add_graft_decoration(const struct commit_graft *graft, void *cb_data)
144 struct commit *commit = lookup_commit(graft->sha1);
145 if (!commit)
146 return 0;
147 add_name_decoration(DECORATION_GRAFTED, "grafted", &commit->object);
148 return 0;
151 void load_ref_decorations(int flags)
153 static int loaded;
154 if (!loaded) {
155 loaded = 1;
156 for_each_ref(add_ref_decoration, &flags);
157 head_ref(add_ref_decoration, &flags);
158 for_each_commit_graft(add_graft_decoration, NULL);
162 static void show_parents(struct commit *commit, int abbrev)
164 struct commit_list *p;
165 for (p = commit->parents; p ; p = p->next) {
166 struct commit *parent = p->item;
167 printf(" %s", find_unique_abbrev(parent->object.sha1, abbrev));
171 static void show_children(struct rev_info *opt, struct commit *commit, int abbrev)
173 struct commit_list *p = lookup_decoration(&opt->children, &commit->object);
174 for ( ; p; p = p->next) {
175 printf(" %s", find_unique_abbrev(p->item->object.sha1, abbrev));
180 * The caller makes sure there is no funny color before
181 * calling. format_decorations makes sure the same after return.
183 void format_decorations(struct strbuf *sb,
184 const struct commit *commit,
185 int use_color)
187 const char *prefix;
188 struct name_decoration *decoration;
189 const char *color_commit =
190 diff_get_color(use_color, DIFF_COMMIT);
191 const char *color_reset =
192 decorate_get_color(use_color, DECORATION_NONE);
194 decoration = lookup_decoration(&name_decoration, &commit->object);
195 if (!decoration)
196 return;
197 prefix = " (";
198 while (decoration) {
199 strbuf_addstr(sb, color_commit);
200 strbuf_addstr(sb, prefix);
201 strbuf_addstr(sb, decorate_get_color(use_color, decoration->type));
202 if (decoration->type == DECORATION_REF_TAG)
203 strbuf_addstr(sb, "tag: ");
204 strbuf_addstr(sb, decoration->name);
205 strbuf_addstr(sb, color_reset);
206 prefix = ", ";
207 decoration = decoration->next;
209 strbuf_addstr(sb, color_commit);
210 strbuf_addch(sb, ')');
211 strbuf_addstr(sb, color_reset);
214 void show_decorations(struct rev_info *opt, struct commit *commit)
216 struct strbuf sb = STRBUF_INIT;
218 if (opt->show_source && commit->util)
219 printf("\t%s", (char *) commit->util);
220 if (!opt->show_decorations)
221 return;
222 format_decorations(&sb, commit, opt->diffopt.use_color);
223 fputs(sb.buf, stdout);
224 strbuf_release(&sb);
227 static unsigned int digits_in_number(unsigned int number)
229 unsigned int i = 10, result = 1;
230 while (i <= number) {
231 i *= 10;
232 result++;
234 return result;
237 void fmt_output_subject(struct strbuf *filename,
238 const char *subject,
239 struct rev_info *info)
241 const char *suffix = info->patch_suffix;
242 int nr = info->nr;
243 int start_len = filename->len;
244 int max_len = start_len + FORMAT_PATCH_NAME_MAX - (strlen(suffix) + 1);
246 if (0 < info->reroll_count)
247 strbuf_addf(filename, "v%d-", info->reroll_count);
248 strbuf_addf(filename, "%04d-%s", nr, subject);
250 if (max_len < filename->len)
251 strbuf_setlen(filename, max_len);
252 strbuf_addstr(filename, suffix);
255 void fmt_output_commit(struct strbuf *filename,
256 struct commit *commit,
257 struct rev_info *info)
259 struct pretty_print_context ctx = {0};
260 struct strbuf subject = STRBUF_INIT;
262 format_commit_message(commit, "%f", &subject, &ctx);
263 fmt_output_subject(filename, subject.buf, info);
264 strbuf_release(&subject);
267 void log_write_email_headers(struct rev_info *opt, struct commit *commit,
268 const char **subject_p,
269 const char **extra_headers_p,
270 int *need_8bit_cte_p)
272 const char *subject = NULL;
273 const char *extra_headers = opt->extra_headers;
274 const char *name = sha1_to_hex(commit->object.sha1);
276 *need_8bit_cte_p = 0; /* unknown */
277 if (opt->total > 0) {
278 static char buffer[64];
279 snprintf(buffer, sizeof(buffer),
280 "Subject: [%s%s%0*d/%d] ",
281 opt->subject_prefix,
282 *opt->subject_prefix ? " " : "",
283 digits_in_number(opt->total),
284 opt->nr, opt->total);
285 subject = buffer;
286 } else if (opt->total == 0 && opt->subject_prefix && *opt->subject_prefix) {
287 static char buffer[256];
288 snprintf(buffer, sizeof(buffer),
289 "Subject: [%s] ",
290 opt->subject_prefix);
291 subject = buffer;
292 } else {
293 subject = "Subject: ";
296 printf("From %s Mon Sep 17 00:00:00 2001\n", name);
297 graph_show_oneline(opt->graph);
298 if (opt->message_id) {
299 printf("Message-Id: <%s>\n", opt->message_id);
300 graph_show_oneline(opt->graph);
302 if (opt->ref_message_ids && opt->ref_message_ids->nr > 0) {
303 int i, n;
304 n = opt->ref_message_ids->nr;
305 printf("In-Reply-To: <%s>\n", opt->ref_message_ids->items[n-1].string);
306 for (i = 0; i < n; i++)
307 printf("%s<%s>\n", (i > 0 ? "\t" : "References: "),
308 opt->ref_message_ids->items[i].string);
309 graph_show_oneline(opt->graph);
311 if (opt->mime_boundary) {
312 static char subject_buffer[1024];
313 static char buffer[1024];
314 struct strbuf filename = STRBUF_INIT;
315 *need_8bit_cte_p = -1; /* NEVER */
316 snprintf(subject_buffer, sizeof(subject_buffer) - 1,
317 "%s"
318 "MIME-Version: 1.0\n"
319 "Content-Type: multipart/mixed;"
320 " boundary=\"%s%s\"\n"
321 "\n"
322 "This is a multi-part message in MIME "
323 "format.\n"
324 "--%s%s\n"
325 "Content-Type: text/plain; "
326 "charset=UTF-8; format=fixed\n"
327 "Content-Transfer-Encoding: 8bit\n\n",
328 extra_headers ? extra_headers : "",
329 mime_boundary_leader, opt->mime_boundary,
330 mime_boundary_leader, opt->mime_boundary);
331 extra_headers = subject_buffer;
333 if (opt->numbered_files)
334 strbuf_addf(&filename, "%d", opt->nr);
335 else
336 fmt_output_commit(&filename, commit, opt);
337 snprintf(buffer, sizeof(buffer) - 1,
338 "\n--%s%s\n"
339 "Content-Type: text/x-patch;"
340 " name=\"%s\"\n"
341 "Content-Transfer-Encoding: 8bit\n"
342 "Content-Disposition: %s;"
343 " filename=\"%s\"\n\n",
344 mime_boundary_leader, opt->mime_boundary,
345 filename.buf,
346 opt->no_inline ? "attachment" : "inline",
347 filename.buf);
348 opt->diffopt.stat_sep = buffer;
349 strbuf_release(&filename);
351 *subject_p = subject;
352 *extra_headers_p = extra_headers;
355 static void show_sig_lines(struct rev_info *opt, int status, const char *bol)
357 const char *color, *reset, *eol;
359 color = diff_get_color_opt(&opt->diffopt,
360 status ? DIFF_WHITESPACE : DIFF_FRAGINFO);
361 reset = diff_get_color_opt(&opt->diffopt, DIFF_RESET);
362 while (*bol) {
363 eol = strchrnul(bol, '\n');
364 printf("%s%.*s%s%s", color, (int)(eol - bol), bol, reset,
365 *eol ? "\n" : "");
366 bol = (*eol) ? (eol + 1) : eol;
370 static void show_signature(struct rev_info *opt, struct commit *commit)
372 struct strbuf payload = STRBUF_INIT;
373 struct strbuf signature = STRBUF_INIT;
374 struct strbuf gpg_output = STRBUF_INIT;
375 int status;
377 if (parse_signed_commit(commit->object.sha1, &payload, &signature) <= 0)
378 goto out;
380 status = verify_signed_buffer(payload.buf, payload.len,
381 signature.buf, signature.len,
382 &gpg_output, NULL);
383 if (status && !gpg_output.len)
384 strbuf_addstr(&gpg_output, "No signature\n");
386 show_sig_lines(opt, status, gpg_output.buf);
388 out:
389 strbuf_release(&gpg_output);
390 strbuf_release(&payload);
391 strbuf_release(&signature);
394 static int which_parent(const unsigned char *sha1, const struct commit *commit)
396 int nth;
397 const struct commit_list *parent;
399 for (nth = 0, parent = commit->parents; parent; parent = parent->next) {
400 if (!hashcmp(parent->item->object.sha1, sha1))
401 return nth;
402 nth++;
404 return -1;
407 static int is_common_merge(const struct commit *commit)
409 return (commit->parents
410 && commit->parents->next
411 && !commit->parents->next->next);
414 static void show_one_mergetag(struct rev_info *opt,
415 struct commit_extra_header *extra,
416 struct commit *commit)
418 unsigned char sha1[20];
419 struct tag *tag;
420 struct strbuf verify_message;
421 int status, nth;
422 size_t payload_size, gpg_message_offset;
424 hash_sha1_file(extra->value, extra->len, typename(OBJ_TAG), sha1);
425 tag = lookup_tag(sha1);
426 if (!tag)
427 return; /* error message already given */
429 strbuf_init(&verify_message, 256);
430 if (parse_tag_buffer(tag, extra->value, extra->len))
431 strbuf_addstr(&verify_message, "malformed mergetag\n");
432 else if (is_common_merge(commit) &&
433 !hashcmp(tag->tagged->sha1,
434 commit->parents->next->item->object.sha1))
435 strbuf_addf(&verify_message,
436 "merged tag '%s'\n", tag->tag);
437 else if ((nth = which_parent(tag->tagged->sha1, commit)) < 0)
438 strbuf_addf(&verify_message, "tag %s names a non-parent %s\n",
439 tag->tag, tag->tagged->sha1);
440 else
441 strbuf_addf(&verify_message,
442 "parent #%d, tagged '%s'\n", nth + 1, tag->tag);
443 gpg_message_offset = verify_message.len;
445 payload_size = parse_signature(extra->value, extra->len);
446 status = -1;
447 if (extra->len > payload_size)
448 if (verify_signed_buffer(extra->value, payload_size,
449 extra->value + payload_size,
450 extra->len - payload_size,
451 &verify_message, NULL)) {
452 if (verify_message.len <= gpg_message_offset)
453 strbuf_addstr(&verify_message, "No signature\n");
454 else
455 status = 0;
458 show_sig_lines(opt, status, verify_message.buf);
459 strbuf_release(&verify_message);
462 static void show_mergetag(struct rev_info *opt, struct commit *commit)
464 struct commit_extra_header *extra, *to_free;
466 to_free = read_commit_extra_headers(commit, NULL);
467 for (extra = to_free; extra; extra = extra->next) {
468 if (strcmp(extra->key, "mergetag"))
469 continue; /* not a merge tag */
470 show_one_mergetag(opt, extra, commit);
472 free_commit_extra_headers(to_free);
475 void show_log(struct rev_info *opt)
477 struct strbuf msgbuf = STRBUF_INIT;
478 struct log_info *log = opt->loginfo;
479 struct commit *commit = log->commit, *parent = log->parent;
480 int abbrev_commit = opt->abbrev_commit ? opt->abbrev : 40;
481 const char *extra_headers = opt->extra_headers;
482 struct pretty_print_context ctx = {0};
484 opt->loginfo = NULL;
485 if (!opt->verbose_header) {
486 graph_show_commit(opt->graph);
488 if (!opt->graph)
489 put_revision_mark(opt, commit);
490 fputs(find_unique_abbrev(commit->object.sha1, abbrev_commit), stdout);
491 if (opt->print_parents)
492 show_parents(commit, abbrev_commit);
493 if (opt->children.name)
494 show_children(opt, commit, abbrev_commit);
495 show_decorations(opt, commit);
496 if (opt->graph && !graph_is_commit_finished(opt->graph)) {
497 putchar('\n');
498 graph_show_remainder(opt->graph);
500 putchar(opt->diffopt.line_termination);
501 return;
505 * If use_terminator is set, we already handled any record termination
506 * at the end of the last record.
507 * Otherwise, add a diffopt.line_termination character before all
508 * entries but the first. (IOW, as a separator between entries)
510 if (opt->shown_one && !opt->use_terminator) {
512 * If entries are separated by a newline, the output
513 * should look human-readable. If the last entry ended
514 * with a newline, print the graph output before this
515 * newline. Otherwise it will end up as a completely blank
516 * line and will look like a gap in the graph.
518 * If the entry separator is not a newline, the output is
519 * primarily intended for programmatic consumption, and we
520 * never want the extra graph output before the entry
521 * separator.
523 if (opt->diffopt.line_termination == '\n' &&
524 !opt->missing_newline)
525 graph_show_padding(opt->graph);
526 putchar(opt->diffopt.line_termination);
528 opt->shown_one = 1;
531 * If the history graph was requested,
532 * print the graph, up to this commit's line
534 graph_show_commit(opt->graph);
537 * Print header line of header..
540 if (opt->commit_format == CMIT_FMT_EMAIL) {
541 log_write_email_headers(opt, commit, &ctx.subject, &extra_headers,
542 &ctx.need_8bit_cte);
543 } else if (opt->commit_format != CMIT_FMT_USERFORMAT) {
544 fputs(diff_get_color_opt(&opt->diffopt, DIFF_COMMIT), stdout);
545 if (opt->commit_format != CMIT_FMT_ONELINE)
546 fputs("commit ", stdout);
548 if (!opt->graph)
549 put_revision_mark(opt, commit);
550 fputs(find_unique_abbrev(commit->object.sha1, abbrev_commit),
551 stdout);
552 if (opt->print_parents)
553 show_parents(commit, abbrev_commit);
554 if (opt->children.name)
555 show_children(opt, commit, abbrev_commit);
556 if (parent)
557 printf(" (from %s)",
558 find_unique_abbrev(parent->object.sha1,
559 abbrev_commit));
560 fputs(diff_get_color_opt(&opt->diffopt, DIFF_RESET), stdout);
561 show_decorations(opt, commit);
562 if (opt->commit_format == CMIT_FMT_ONELINE) {
563 putchar(' ');
564 } else {
565 putchar('\n');
566 graph_show_oneline(opt->graph);
568 if (opt->reflog_info) {
570 * setup_revisions() ensures that opt->reflog_info
571 * and opt->graph cannot both be set,
572 * so we don't need to worry about printing the
573 * graph info here.
575 show_reflog_message(opt->reflog_info,
576 opt->commit_format == CMIT_FMT_ONELINE,
577 opt->date_mode,
578 opt->date_mode_explicit);
579 if (opt->commit_format == CMIT_FMT_ONELINE)
580 return;
584 if (opt->show_signature) {
585 show_signature(opt, commit);
586 show_mergetag(opt, commit);
589 if (!commit->buffer)
590 return;
592 if (opt->show_notes) {
593 int raw;
594 struct strbuf notebuf = STRBUF_INIT;
596 raw = (opt->commit_format == CMIT_FMT_USERFORMAT);
597 format_display_notes(commit->object.sha1, &notebuf,
598 get_log_output_encoding(), raw);
599 ctx.notes_message = notebuf.len
600 ? strbuf_detach(&notebuf, NULL)
601 : xcalloc(1, 1);
605 * And then the pretty-printed message itself
607 if (ctx.need_8bit_cte >= 0 && opt->add_signoff)
608 ctx.need_8bit_cte =
609 has_non_ascii(fmt_name(getenv("GIT_COMMITTER_NAME"),
610 getenv("GIT_COMMITTER_EMAIL")));
611 ctx.date_mode = opt->date_mode;
612 ctx.date_mode_explicit = opt->date_mode_explicit;
613 ctx.abbrev = opt->diffopt.abbrev;
614 ctx.after_subject = extra_headers;
615 ctx.preserve_subject = opt->preserve_subject;
616 ctx.reflog_info = opt->reflog_info;
617 ctx.fmt = opt->commit_format;
618 ctx.mailmap = opt->mailmap;
619 ctx.color = opt->diffopt.use_color;
620 ctx.output_encoding = get_log_output_encoding();
621 if (opt->from_ident.mail_begin && opt->from_ident.name_begin)
622 ctx.from_ident = &opt->from_ident;
623 pretty_print_commit(&ctx, commit, &msgbuf);
625 if (opt->add_signoff)
626 append_signoff(&msgbuf, 0, APPEND_SIGNOFF_DEDUP);
628 if ((ctx.fmt != CMIT_FMT_USERFORMAT) &&
629 ctx.notes_message && *ctx.notes_message) {
630 if (ctx.fmt == CMIT_FMT_EMAIL) {
631 strbuf_addstr(&msgbuf, "---\n");
632 opt->shown_dashes = 1;
634 strbuf_addstr(&msgbuf, ctx.notes_message);
637 if (opt->show_log_size) {
638 printf("log size %i\n", (int)msgbuf.len);
639 graph_show_oneline(opt->graph);
643 * Set opt->missing_newline if msgbuf doesn't
644 * end in a newline (including if it is empty)
646 if (!msgbuf.len || msgbuf.buf[msgbuf.len - 1] != '\n')
647 opt->missing_newline = 1;
648 else
649 opt->missing_newline = 0;
651 if (opt->graph)
652 graph_show_commit_msg(opt->graph, &msgbuf);
653 else
654 fwrite(msgbuf.buf, sizeof(char), msgbuf.len, stdout);
655 if (opt->use_terminator) {
656 if (!opt->missing_newline)
657 graph_show_padding(opt->graph);
658 putchar(opt->diffopt.line_termination);
661 strbuf_release(&msgbuf);
662 free(ctx.notes_message);
665 int log_tree_diff_flush(struct rev_info *opt)
667 opt->shown_dashes = 0;
668 diffcore_std(&opt->diffopt);
670 if (diff_queue_is_empty()) {
671 int saved_fmt = opt->diffopt.output_format;
672 opt->diffopt.output_format = DIFF_FORMAT_NO_OUTPUT;
673 diff_flush(&opt->diffopt);
674 opt->diffopt.output_format = saved_fmt;
675 return 0;
678 if (opt->loginfo && !opt->no_commit_id) {
679 show_log(opt);
680 if ((opt->diffopt.output_format & ~DIFF_FORMAT_NO_OUTPUT) &&
681 opt->verbose_header &&
682 opt->commit_format != CMIT_FMT_ONELINE) {
684 * When showing a verbose header (i.e. log message),
685 * and not in --pretty=oneline format, we would want
686 * an extra newline between the end of log and the
687 * diff/diffstat output for readability.
689 int pch = DIFF_FORMAT_DIFFSTAT | DIFF_FORMAT_PATCH;
690 if (opt->diffopt.output_prefix) {
691 struct strbuf *msg = NULL;
692 msg = opt->diffopt.output_prefix(&opt->diffopt,
693 opt->diffopt.output_prefix_data);
694 fwrite(msg->buf, msg->len, 1, stdout);
698 * We may have shown three-dashes line early
699 * between notes and the log message, in which
700 * case we only want a blank line after the
701 * notes without (an extra) three-dashes line.
702 * Otherwise, we show the three-dashes line if
703 * we are showing the patch with diffstat, but
704 * in that case, there is no extra blank line
705 * after the three-dashes line.
707 if (!opt->shown_dashes &&
708 (pch & opt->diffopt.output_format) == pch)
709 printf("---");
710 putchar('\n');
713 diff_flush(&opt->diffopt);
714 return 1;
717 static int do_diff_combined(struct rev_info *opt, struct commit *commit)
719 diff_tree_combined_merge(commit, opt->dense_combined_merges, opt);
720 return !opt->loginfo;
724 * Show the diff of a commit.
726 * Return true if we printed any log info messages
728 static int log_tree_diff(struct rev_info *opt, struct commit *commit, struct log_info *log)
730 int showed_log;
731 struct commit_list *parents;
732 unsigned const char *sha1;
734 if (!opt->diff && !DIFF_OPT_TST(&opt->diffopt, EXIT_WITH_STATUS))
735 return 0;
737 parse_commit(commit);
738 sha1 = commit->tree->object.sha1;
740 /* Root commit? */
741 parents = get_saved_parents(opt, commit);
742 if (!parents) {
743 if (opt->show_root_diff) {
744 diff_root_tree_sha1(sha1, "", &opt->diffopt);
745 log_tree_diff_flush(opt);
747 return !opt->loginfo;
750 /* More than one parent? */
751 if (parents && parents->next) {
752 if (opt->ignore_merges)
753 return 0;
754 else if (opt->combine_merges)
755 return do_diff_combined(opt, commit);
756 else if (opt->first_parent_only) {
758 * Generate merge log entry only for the first
759 * parent, showing summary diff of the others
760 * we merged _in_.
762 parse_commit(parents->item);
763 diff_tree_sha1(parents->item->tree->object.sha1,
764 sha1, "", &opt->diffopt);
765 log_tree_diff_flush(opt);
766 return !opt->loginfo;
769 /* If we show individual diffs, show the parent info */
770 log->parent = parents->item;
773 showed_log = 0;
774 for (;;) {
775 struct commit *parent = parents->item;
777 parse_commit(parent);
778 diff_tree_sha1(parent->tree->object.sha1,
779 sha1, "", &opt->diffopt);
780 log_tree_diff_flush(opt);
782 showed_log |= !opt->loginfo;
784 /* Set up the log info for the next parent, if any.. */
785 parents = parents->next;
786 if (!parents)
787 break;
788 log->parent = parents->item;
789 opt->loginfo = log;
791 return showed_log;
794 int log_tree_commit(struct rev_info *opt, struct commit *commit)
796 struct log_info log;
797 int shown;
799 log.commit = commit;
800 log.parent = NULL;
801 opt->loginfo = &log;
803 if (opt->line_level_traverse)
804 return line_log_print(opt, commit);
806 shown = log_tree_diff(opt, commit, &log);
807 if (!shown && opt->loginfo && opt->always_show_header) {
808 log.parent = NULL;
809 show_log(opt);
810 shown = 1;
812 opt->loginfo = NULL;
813 maybe_flush_or_die(stdout, "stdout");
814 return shown;