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t5301-sliding-window: modernize test format
[alt-git.git] / pretty.c
blob0bb938021ba593df826b91d39a2ec7a059e84b61
1 #include "git-compat-util.h"
2 #include "alloc.h"
3 #include "config.h"
4 #include "commit.h"
5 #include "environment.h"
6 #include "gettext.h"
7 #include "hex.h"
8 #include "utf8.h"
9 #include "diff.h"
10 #include "pager.h"
11 #include "revision.h"
12 #include "string-list.h"
13 #include "mailmap.h"
14 #include "log-tree.h"
15 #include "notes.h"
16 #include "color.h"
17 #include "reflog-walk.h"
18 #include "gpg-interface.h"
19 #include "trailer.h"
20 #include "run-command.h"
21
22 /*
23 * The limit for formatting directives, which enable the caller to append
24 * arbitrarily many bytes to the formatted buffer. This includes padding
25 * and wrapping formatters.
26 */
27 #define FORMATTING_LIMIT (16 * 1024)
28
29 static char *user_format;
30 static struct cmt_fmt_map {
31 const char *name;
32 enum cmit_fmt format;
33 int is_tformat;
34 int expand_tabs_in_log;
35 int is_alias;
36 enum date_mode_type default_date_mode_type;
37 const char *user_format;
38 } *commit_formats;
39 static size_t builtin_formats_len;
40 static size_t commit_formats_len;
41 static size_t commit_formats_alloc;
42 static struct cmt_fmt_map *find_commit_format(const char *sought);
43
44 int commit_format_is_empty(enum cmit_fmt fmt)
45 {
46 return fmt == CMIT_FMT_USERFORMAT && !*user_format;
47 }
48
49 static void save_user_format(struct rev_info *rev, const char *cp, int is_tformat)
50 {
51 free(user_format);
52 user_format = xstrdup(cp);
53 if (is_tformat)
54 rev->use_terminator = 1;
55 rev->commit_format = CMIT_FMT_USERFORMAT;
56 }
57
58 static int git_pretty_formats_config(const char *var, const char *value,
59 void *cb UNUSED)
60 {
61 struct cmt_fmt_map *commit_format = NULL;
62 const char *name;
63 const char *fmt;
64 int i;
65
66 if (!skip_prefix(var, "pretty.", &name))
67 return 0;
68
69 for (i = 0; i < builtin_formats_len; i++) {
70 if (!strcmp(commit_formats[i].name, name))
71 return 0;
72 }
73
74 for (i = builtin_formats_len; i < commit_formats_len; i++) {
75 if (!strcmp(commit_formats[i].name, name)) {
76 commit_format = &commit_formats[i];
77 break;
78 }
79 }
80
81 if (!commit_format) {
82 ALLOC_GROW(commit_formats, commit_formats_len+1,
83 commit_formats_alloc);
84 commit_format = &commit_formats[commit_formats_len];
85 memset(commit_format, 0, sizeof(*commit_format));
86 commit_formats_len++;
87 }
88
89 commit_format->name = xstrdup(name);
90 commit_format->format = CMIT_FMT_USERFORMAT;
91 if (git_config_string(&fmt, var, value))
92 return -1;
93
94 if (skip_prefix(fmt, "format:", &fmt))
95 commit_format->is_tformat = 0;
96 else if (skip_prefix(fmt, "tformat:", &fmt) || strchr(fmt, '%'))
97 commit_format->is_tformat = 1;
98 else
99 commit_format->is_alias = 1;
100 commit_format->user_format = fmt;
101
102 return 0;
103 }
104
105 static void setup_commit_formats(void)
106 {
107 struct cmt_fmt_map builtin_formats[] = {
108 { "raw", CMIT_FMT_RAW, 0, 0 },
109 { "medium", CMIT_FMT_MEDIUM, 0, 8 },
110 { "short", CMIT_FMT_SHORT, 0, 0 },
111 { "email", CMIT_FMT_EMAIL, 0, 0 },
112 { "mboxrd", CMIT_FMT_MBOXRD, 0, 0 },
113 { "fuller", CMIT_FMT_FULLER, 0, 8 },
114 { "full", CMIT_FMT_FULL, 0, 8 },
115 { "oneline", CMIT_FMT_ONELINE, 1, 0 },
116 { "reference", CMIT_FMT_USERFORMAT, 1, 0,
117 0, DATE_SHORT, "%C(auto)%h (%s, %ad)" },
118 /*
119 * Please update $__git_log_pretty_formats in
120 * git-completion.bash when you add new formats.
121 */
122 };
123 commit_formats_len = ARRAY_SIZE(builtin_formats);
124 builtin_formats_len = commit_formats_len;
125 ALLOC_GROW(commit_formats, commit_formats_len, commit_formats_alloc);
126 COPY_ARRAY(commit_formats, builtin_formats,
127 ARRAY_SIZE(builtin_formats));
128
129 git_config(git_pretty_formats_config, NULL);
130 }
131
132 static struct cmt_fmt_map *find_commit_format_recursive(const char *sought,
133 const char *original,
134 int num_redirections)
135 {
136 struct cmt_fmt_map *found = NULL;
137 size_t found_match_len = 0;
138 int i;
139
140 if (num_redirections >= commit_formats_len)
141 die("invalid --pretty format: "
142 "'%s' references an alias which points to itself",
143 original);
144
145 for (i = 0; i < commit_formats_len; i++) {
146 size_t match_len;
147
148 if (!starts_with(commit_formats[i].name, sought))
149 continue;
150
151 match_len = strlen(commit_formats[i].name);
152 if (found == NULL || found_match_len > match_len) {
153 found = &commit_formats[i];
154 found_match_len = match_len;
155 }
156 }
157
158 if (found && found->is_alias) {
159 found = find_commit_format_recursive(found->user_format,
160 original,
161 num_redirections+1);
162 }
163
164 return found;
165 }
166
167 static struct cmt_fmt_map *find_commit_format(const char *sought)
168 {
169 if (!commit_formats)
170 setup_commit_formats();
171
172 return find_commit_format_recursive(sought, sought, 0);
173 }
174
175 void get_commit_format(const char *arg, struct rev_info *rev)
176 {
177 struct cmt_fmt_map *commit_format;
178
179 rev->use_terminator = 0;
180 if (!arg) {
181 rev->commit_format = CMIT_FMT_DEFAULT;
182 return;
183 }
184 if (skip_prefix(arg, "format:", &arg)) {
185 save_user_format(rev, arg, 0);
186 return;
187 }
188
189 if (!*arg || skip_prefix(arg, "tformat:", &arg) || strchr(arg, '%')) {
190 save_user_format(rev, arg, 1);
191 return;
192 }
193
194 commit_format = find_commit_format(arg);
195 if (!commit_format)
196 die("invalid --pretty format: %s", arg);
197
198 rev->commit_format = commit_format->format;
199 rev->use_terminator = commit_format->is_tformat;
200 rev->expand_tabs_in_log_default = commit_format->expand_tabs_in_log;
201 if (!rev->date_mode_explicit && commit_format->default_date_mode_type)
202 rev->date_mode.type = commit_format->default_date_mode_type;
203 if (commit_format->format == CMIT_FMT_USERFORMAT) {
204 save_user_format(rev, commit_format->user_format,
205 commit_format->is_tformat);
206 }
207 }
208
209 /*
210 * Generic support for pretty-printing the header
211 */
212 static int get_one_line(const char *msg)
213 {
214 int ret = 0;
215
216 for (;;) {
217 char c = *msg++;
218 if (!c)
219 break;
220 ret++;
221 if (c == '\n')
222 break;
223 }
224 return ret;
225 }
226
227 /* High bit set, or ISO-2022-INT */
228 static int non_ascii(int ch)
229 {
230 return !isascii(ch) || ch == '\033';
231 }
232
233 int has_non_ascii(const char *s)
234 {
235 int ch;
236 if (!s)
237 return 0;
238 while ((ch = *s++) != '\0') {
239 if (non_ascii(ch))
240 return 1;
241 }
242 return 0;
243 }
244
245 static int is_rfc822_special(char ch)
246 {
247 switch (ch) {
248 case '(':
249 case ')':
250 case '<':
251 case '>':
252 case '[':
253 case ']':
254 case ':':
255 case ';':
256 case '@':
257 case ',':
258 case '.':
259 case '"':
260 case '\\':
261 return 1;
262 default:
263 return 0;
264 }
265 }
266
267 static int needs_rfc822_quoting(const char *s, int len)
268 {
269 int i;
270 for (i = 0; i < len; i++)
271 if (is_rfc822_special(s[i]))
272 return 1;
273 return 0;
274 }
275
276 static int last_line_length(struct strbuf *sb)
277 {
278 int i;
279
280 /* How many bytes are already used on the last line? */
281 for (i = sb->len - 1; i >= 0; i--)
282 if (sb->buf[i] == '\n')
283 break;
284 return sb->len - (i + 1);
285 }
286
287 static void add_rfc822_quoted(struct strbuf *out, const char *s, int len)
288 {
289 int i;
290
291 /* just a guess, we may have to also backslash-quote */
292 strbuf_grow(out, len + 2);
293
294 strbuf_addch(out, '"');
295 for (i = 0; i < len; i++) {
296 switch (s[i]) {
297 case '"':
298 case '\\':
299 strbuf_addch(out, '\\');
300 /* fall through */
301 default:
302 strbuf_addch(out, s[i]);
303 }
304 }
305 strbuf_addch(out, '"');
306 }
307
308 enum rfc2047_type {
309 RFC2047_SUBJECT,
310 RFC2047_ADDRESS
311 };
312
313 static int is_rfc2047_special(char ch, enum rfc2047_type type)
314 {
315 /*
316 * rfc2047, section 4.2:
317 *
318 * 8-bit values which correspond to printable ASCII characters other
319 * than "=", "?", and "_" (underscore), MAY be represented as those
320 * characters. (But see section 5 for restrictions.) In
321 * particular, SPACE and TAB MUST NOT be represented as themselves
322 * within encoded words.
323 */
324
325 /*
326 * rule out non-ASCII characters and non-printable characters (the
327 * non-ASCII check should be redundant as isprint() is not localized
328 * and only knows about ASCII, but be defensive about that)
329 */
330 if (non_ascii(ch) || !isprint(ch))
331 return 1;
332
333 /*
334 * rule out special printable characters (' ' should be the only
335 * whitespace character considered printable, but be defensive and use
336 * isspace())
337 */
338 if (isspace(ch) || ch == '=' || ch == '?' || ch == '_')
339 return 1;
340
341 /*
342 * rfc2047, section 5.3:
343 *
344 * As a replacement for a 'word' entity within a 'phrase', for example,
345 * one that precedes an address in a From, To, or Cc header. The ABNF
346 * definition for 'phrase' from RFC 822 thus becomes:
347 *
348 * phrase = 1*( encoded-word / word )
349 *
350 * In this case the set of characters that may be used in a "Q"-encoded
351 * 'encoded-word' is restricted to: <upper and lower case ASCII
352 * letters, decimal digits, "!", "*", "+", "-", "/", "=", and "_"
353 * (underscore, ASCII 95.)>. An 'encoded-word' that appears within a
354 * 'phrase' MUST be separated from any adjacent 'word', 'text' or
355 * 'special' by 'linear-white-space'.
356 */
357
358 if (type != RFC2047_ADDRESS)
359 return 0;
360
361 /* '=' and '_' are special cases and have been checked above */
362 return !(isalnum(ch) || ch == '!' || ch == '*' || ch == '+' || ch == '-' || ch == '/');
363 }
364
365 static int needs_rfc2047_encoding(const char *line, int len)
366 {
367 int i;
368
369 for (i = 0; i < len; i++) {
370 int ch = line[i];
371 if (non_ascii(ch) || ch == '\n')
372 return 1;
373 if ((i + 1 < len) && (ch == '=' && line[i+1] == '?'))
374 return 1;
375 }
376
377 return 0;
378 }
379
380 static void add_rfc2047(struct strbuf *sb, const char *line, size_t len,
381 const char *encoding, enum rfc2047_type type)
382 {
383 static const int max_encoded_length = 76; /* per rfc2047 */
384 int i;
385 int line_len = last_line_length(sb);
386
387 strbuf_grow(sb, len * 3 + strlen(encoding) + 100);
388 strbuf_addf(sb, "=?%s?q?", encoding);
389 line_len += strlen(encoding) + 5; /* 5 for =??q? */
390
391 while (len) {
392 /*
393 * RFC 2047, section 5 (3):
394 *
395 * Each 'encoded-word' MUST represent an integral number of
396 * characters. A multi-octet character may not be split across
397 * adjacent 'encoded- word's.
398 */
399 const unsigned char *p = (const unsigned char *)line;
400 int chrlen = mbs_chrlen(&line, &len, encoding);
401 int is_special = (chrlen > 1) || is_rfc2047_special(*p, type);
402
403 /* "=%02X" * chrlen, or the byte itself */
404 const char *encoded_fmt = is_special ? "=%02X" : "%c";
405 int encoded_len = is_special ? 3 * chrlen : 1;
406
407 /*
408 * According to RFC 2047, we could encode the special character
409 * ' ' (space) with '_' (underscore) for readability. But many
410 * programs do not understand this and just leave the
411 * underscore in place. Thus, we do nothing special here, which
412 * causes ' ' to be encoded as '=20', avoiding this problem.
413 */
414
415 if (line_len + encoded_len + 2 > max_encoded_length) {
416 /* It won't fit with trailing "?=" --- break the line */
417 strbuf_addf(sb, "?=\n =?%s?q?", encoding);
418 line_len = strlen(encoding) + 5 + 1; /* =??q? plus SP */
419 }
420
421 for (i = 0; i < chrlen; i++)
422 strbuf_addf(sb, encoded_fmt, p[i]);
423 line_len += encoded_len;
424 }
425 strbuf_addstr(sb, "?=");
426 }
427
428 const char *show_ident_date(const struct ident_split *ident,
429 const struct date_mode *mode)
430 {
431 timestamp_t date = 0;
432 long tz = 0;
433
434 if (ident->date_begin && ident->date_end)
435 date = parse_timestamp(ident->date_begin, NULL, 10);
436 if (date_overflows(date))
437 date = 0;
438 else {
439 if (ident->tz_begin && ident->tz_end)
440 tz = strtol(ident->tz_begin, NULL, 10);
441 if (tz >= INT_MAX || tz <= INT_MIN)
442 tz = 0;
443 }
444 return show_date(date, tz, mode);
445 }
446
447 static inline void strbuf_add_with_color(struct strbuf *sb, const char *color,
448 const char *buf, size_t buflen)
449 {
450 strbuf_addstr(sb, color);
451 strbuf_add(sb, buf, buflen);
452 if (*color)
453 strbuf_addstr(sb, GIT_COLOR_RESET);
454 }
455
456 static void append_line_with_color(struct strbuf *sb, struct grep_opt *opt,
457 const char *line, size_t linelen,
458 int color, enum grep_context ctx,
459 enum grep_header_field field)
460 {
461 const char *buf, *eol, *line_color, *match_color;
462 regmatch_t match;
463 int eflags = 0;
464
465 buf = line;
466 eol = buf + linelen;
467
468 if (!opt || !want_color(color) || opt->invert)
469 goto end;
470
471 line_color = opt->colors[GREP_COLOR_SELECTED];
472 match_color = opt->colors[GREP_COLOR_MATCH_SELECTED];
473
474 while (grep_next_match(opt, buf, eol, ctx, &match, field, eflags)) {
475 if (match.rm_so == match.rm_eo)
476 break;
477
478 strbuf_add_with_color(sb, line_color, buf, match.rm_so);
479 strbuf_add_with_color(sb, match_color, buf + match.rm_so,
480 match.rm_eo - match.rm_so);
481 buf += match.rm_eo;
482 eflags = REG_NOTBOL;
483 }
484
485 if (eflags)
486 strbuf_add_with_color(sb, line_color, buf, eol - buf);
487 else {
488 end:
489 strbuf_add(sb, buf, eol - buf);
490 }
491 }
492
493 static int use_in_body_from(const struct pretty_print_context *pp,
494 const struct ident_split *ident)
495 {
496 if (pp->rev && pp->rev->force_in_body_from)
497 return 1;
498 if (ident_cmp(pp->from_ident, ident))
499 return 1;
500 return 0;
501 }
502
503 void pp_user_info(struct pretty_print_context *pp,
504 const char *what, struct strbuf *sb,
505 const char *line, const char *encoding)
506 {
507 struct ident_split ident;
508 char *line_end;
509 const char *mailbuf, *namebuf;
510 size_t namelen, maillen;
511 int max_length = 78; /* per rfc2822 */
512
513 if (pp->fmt == CMIT_FMT_ONELINE)
514 return;
515
516 line_end = strchrnul(line, '\n');
517 if (split_ident_line(&ident, line, line_end - line))
518 return;
519
520 mailbuf = ident.mail_begin;
521 maillen = ident.mail_end - ident.mail_begin;
522 namebuf = ident.name_begin;
523 namelen = ident.name_end - ident.name_begin;
524
525 if (pp->mailmap)
526 map_user(pp->mailmap, &mailbuf, &maillen, &namebuf, &namelen);
527
528 if (cmit_fmt_is_mail(pp->fmt)) {
529 if (pp->from_ident && use_in_body_from(pp, &ident)) {
530 struct strbuf buf = STRBUF_INIT;
531
532 strbuf_addstr(&buf, "From: ");
533 strbuf_add(&buf, namebuf, namelen);
534 strbuf_addstr(&buf, " <");
535 strbuf_add(&buf, mailbuf, maillen);
536 strbuf_addstr(&buf, ">\n");
537 string_list_append(&pp->in_body_headers,
538 strbuf_detach(&buf, NULL));
539
540 mailbuf = pp->from_ident->mail_begin;
541 maillen = pp->from_ident->mail_end - mailbuf;
542 namebuf = pp->from_ident->name_begin;
543 namelen = pp->from_ident->name_end - namebuf;
544 }
545
546 strbuf_addstr(sb, "From: ");
547 if (pp->encode_email_headers &&
548 needs_rfc2047_encoding(namebuf, namelen)) {
549 add_rfc2047(sb, namebuf, namelen,
550 encoding, RFC2047_ADDRESS);
551 max_length = 76; /* per rfc2047 */
552 } else if (needs_rfc822_quoting(namebuf, namelen)) {
553 struct strbuf quoted = STRBUF_INIT;
554 add_rfc822_quoted(&quoted, namebuf, namelen);
555 strbuf_add_wrapped_bytes(sb, quoted.buf, quoted.len,
556 -6, 1, max_length);
557 strbuf_release(&quoted);
558 } else {
559 strbuf_add_wrapped_bytes(sb, namebuf, namelen,
560 -6, 1, max_length);
561 }
562
563 if (max_length <
564 last_line_length(sb) + strlen(" <") + maillen + strlen(">"))
565 strbuf_addch(sb, '\n');
566 strbuf_addf(sb, " <%.*s>\n", (int)maillen, mailbuf);
567 } else {
568 struct strbuf id = STRBUF_INIT;
569 enum grep_header_field field = GREP_HEADER_FIELD_MAX;
570 struct grep_opt *opt = pp->rev ? &pp->rev->grep_filter : NULL;
571
572 if (!strcmp(what, "Author"))
573 field = GREP_HEADER_AUTHOR;
574 else if (!strcmp(what, "Commit"))
575 field = GREP_HEADER_COMMITTER;
576
577 strbuf_addf(sb, "%s: ", what);
578 if (pp->fmt == CMIT_FMT_FULLER)
579 strbuf_addchars(sb, ' ', 4);
580
581 strbuf_addf(&id, "%.*s <%.*s>", (int)namelen, namebuf,
582 (int)maillen, mailbuf);
583
584 append_line_with_color(sb, opt, id.buf, id.len, pp->color,
585 GREP_CONTEXT_HEAD, field);
586 strbuf_addch(sb, '\n');
587 strbuf_release(&id);
588 }
589
590 switch (pp->fmt) {
591 case CMIT_FMT_MEDIUM:
592 strbuf_addf(sb, "Date: %s\n",
593 show_ident_date(&ident, &pp->date_mode));
594 break;
595 case CMIT_FMT_EMAIL:
596 case CMIT_FMT_MBOXRD:
597 strbuf_addf(sb, "Date: %s\n",
598 show_ident_date(&ident, DATE_MODE(RFC2822)));
599 break;
600 case CMIT_FMT_FULLER:
601 strbuf_addf(sb, "%sDate: %s\n", what,
602 show_ident_date(&ident, &pp->date_mode));
603 break;
604 default:
605 /* notin' */
606 break;
607 }
608 }
609
610 static int is_blank_line(const char *line, int *len_p)
611 {
612 int len = *len_p;
613 while (len && isspace(line[len - 1]))
614 len--;
615 *len_p = len;
616 return !len;
617 }
618
619 const char *skip_blank_lines(const char *msg)
620 {
621 for (;;) {
622 int linelen = get_one_line(msg);
623 int ll = linelen;
624 if (!linelen)
625 break;
626 if (!is_blank_line(msg, &ll))
627 break;
628 msg += linelen;
629 }
630 return msg;
631 }
632
633 static void add_merge_info(const struct pretty_print_context *pp,
634 struct strbuf *sb, const struct commit *commit)
635 {
636 struct commit_list *parent = commit->parents;
637
638 if ((pp->fmt == CMIT_FMT_ONELINE) || (cmit_fmt_is_mail(pp->fmt)) ||
639 !parent || !parent->next)
640 return;
641
642 strbuf_addstr(sb, "Merge:");
643
644 while (parent) {
645 struct object_id *oidp = &parent->item->object.oid;
646 strbuf_addch(sb, ' ');
647 if (pp->abbrev)
648 strbuf_add_unique_abbrev(sb, oidp, pp->abbrev);
649 else
650 strbuf_addstr(sb, oid_to_hex(oidp));
651 parent = parent->next;
652 }
653 strbuf_addch(sb, '\n');
654 }
655
656 static char *get_header(const char *msg, const char *key)
657 {
658 size_t len;
659 const char *v = find_commit_header(msg, key, &len);
660 return v ? xmemdupz(v, len) : NULL;
661 }
662
663 static char *replace_encoding_header(char *buf, const char *encoding)
664 {
665 struct strbuf tmp = STRBUF_INIT;
666 size_t start, len;
667 char *cp = buf;
668
669 /* guess if there is an encoding header before a \n\n */
670 while (!starts_with(cp, "encoding ")) {
671 cp = strchr(cp, '\n');
672 if (!cp || *++cp == '\n')
673 return buf;
674 }
675 start = cp - buf;
676 cp = strchr(cp, '\n');
677 if (!cp)
678 return buf; /* should not happen but be defensive */
679 len = cp + 1 - (buf + start);
680
681 strbuf_attach(&tmp, buf, strlen(buf), strlen(buf) + 1);
682 if (is_encoding_utf8(encoding)) {
683 /* we have re-coded to UTF-8; drop the header */
684 strbuf_remove(&tmp, start, len);
685 } else {
686 /* just replaces XXXX in 'encoding XXXX\n' */
687 strbuf_splice(&tmp, start + strlen("encoding "),
688 len - strlen("encoding \n"),
689 encoding, strlen(encoding));
690 }
691 return strbuf_detach(&tmp, NULL);
692 }
693
694 const char *repo_logmsg_reencode(struct repository *r,
695 const struct commit *commit,
696 char **commit_encoding,
697 const char *output_encoding)
698 {
699 static const char *utf8 = "UTF-8";
700 const char *use_encoding;
701 char *encoding;
702 const char *msg = repo_get_commit_buffer(r, commit, NULL);
703 char *out;
704
705 if (!output_encoding || !*output_encoding) {
706 if (commit_encoding)
707 *commit_encoding = get_header(msg, "encoding");
708 return msg;
709 }
710 encoding = get_header(msg, "encoding");
711 if (commit_encoding)
712 *commit_encoding = encoding;
713 use_encoding = encoding ? encoding : utf8;
714 if (same_encoding(use_encoding, output_encoding)) {
715 /*
716 * No encoding work to be done. If we have no encoding header
717 * at all, then there's nothing to do, and we can return the
718 * message verbatim (whether newly allocated or not).
719 */
720 if (!encoding)
721 return msg;
722
723 /*
724 * Otherwise, we still want to munge the encoding header in the
725 * result, which will be done by modifying the buffer. If we
726 * are using a fresh copy, we can reuse it. But if we are using
727 * the cached copy from repo_get_commit_buffer, we need to duplicate it
728 * to avoid munging the cached copy.
729 */
730 if (msg == get_cached_commit_buffer(r, commit, NULL))
731 out = xstrdup(msg);
732 else
733 out = (char *)msg;
734 }
735 else {
736 /*
737 * There's actual encoding work to do. Do the reencoding, which
738 * still leaves the header to be replaced in the next step. At
739 * this point, we are done with msg. If we allocated a fresh
740 * copy, we can free it.
741 */
742 out = reencode_string(msg, output_encoding, use_encoding);
743 if (out)
744 repo_unuse_commit_buffer(r, commit, msg);
745 }
746
747 /*
748 * This replacement actually consumes the buffer we hand it, so we do
749 * not have to worry about freeing the old "out" here.
750 */
751 if (out)
752 out = replace_encoding_header(out, output_encoding);
753
754 if (!commit_encoding)
755 free(encoding);
756 /*
757 * If the re-encoding failed, out might be NULL here; in that
758 * case we just return the commit message verbatim.
759 */
760 return out ? out : msg;
761 }
762
763 static int mailmap_name(const char **email, size_t *email_len,
764 const char **name, size_t *name_len)
765 {
766 static struct string_list *mail_map;
767 if (!mail_map) {
768 CALLOC_ARRAY(mail_map, 1);
769 read_mailmap(mail_map);
770 }
771 return mail_map->nr && map_user(mail_map, email, email_len, name, name_len);
772 }
773
774 static size_t format_person_part(struct strbuf *sb, char part,
775 const char *msg, int len,
776 const struct date_mode *dmode)
777 {
778 /* currently all placeholders have same length */
779 const int placeholder_len = 2;
780 struct ident_split s;
781 const char *name, *mail;
782 size_t maillen, namelen;
783
784 if (split_ident_line(&s, msg, len) < 0)
785 goto skip;
786
787 name = s.name_begin;
788 namelen = s.name_end - s.name_begin;
789 mail = s.mail_begin;
790 maillen = s.mail_end - s.mail_begin;
791
792 if (part == 'N' || part == 'E' || part == 'L') /* mailmap lookup */
793 mailmap_name(&mail, &maillen, &name, &namelen);
794 if (part == 'n' || part == 'N') { /* name */
795 strbuf_add(sb, name, namelen);
796 return placeholder_len;
797 }
798 if (part == 'e' || part == 'E') { /* email */
799 strbuf_add(sb, mail, maillen);
800 return placeholder_len;
801 }
802 if (part == 'l' || part == 'L') { /* local-part */
803 const char *at = memchr(mail, '@', maillen);
804 if (at)
805 maillen = at - mail;
806 strbuf_add(sb, mail, maillen);
807 return placeholder_len;
808 }
809
810 if (!s.date_begin)
811 goto skip;
812
813 if (part == 't') { /* date, UNIX timestamp */
814 strbuf_add(sb, s.date_begin, s.date_end - s.date_begin);
815 return placeholder_len;
816 }
817
818 switch (part) {
819 case 'd': /* date */
820 strbuf_addstr(sb, show_ident_date(&s, dmode));
821 return placeholder_len;
822 case 'D': /* date, RFC2822 style */
823 strbuf_addstr(sb, show_ident_date(&s, DATE_MODE(RFC2822)));
824 return placeholder_len;
825 case 'r': /* date, relative */
826 strbuf_addstr(sb, show_ident_date(&s, DATE_MODE(RELATIVE)));
827 return placeholder_len;
828 case 'i': /* date, ISO 8601-like */
829 strbuf_addstr(sb, show_ident_date(&s, DATE_MODE(ISO8601)));
830 return placeholder_len;
831 case 'I': /* date, ISO 8601 strict */
832 strbuf_addstr(sb, show_ident_date(&s, DATE_MODE(ISO8601_STRICT)));
833 return placeholder_len;
834 case 'h': /* date, human */
835 strbuf_addstr(sb, show_ident_date(&s, DATE_MODE(HUMAN)));
836 return placeholder_len;
837 case 's':
838 strbuf_addstr(sb, show_ident_date(&s, DATE_MODE(SHORT)));
839 return placeholder_len;
840 }
841
842 skip:
843 /*
844 * reading from either a bogus commit, or a reflog entry with
845 * %gn, %ge, etc.; 'sb' cannot be updated, but we still need
846 * to compute a valid return value.
847 */
848 if (part == 'n' || part == 'e' || part == 't' || part == 'd'
849 || part == 'D' || part == 'r' || part == 'i')
850 return placeholder_len;
851
852 return 0; /* unknown placeholder */
853 }
854
855 struct chunk {
856 size_t off;
857 size_t len;
858 };
859
860 enum flush_type {
861 no_flush,
862 flush_right,
863 flush_left,
864 flush_left_and_steal,
865 flush_both
866 };
867
868 enum trunc_type {
869 trunc_none,
870 trunc_left,
871 trunc_middle,
872 trunc_right
873 };
874
875 struct format_commit_context {
876 struct repository *repository;
877 const struct commit *commit;
878 const struct pretty_print_context *pretty_ctx;
879 unsigned commit_header_parsed:1;
880 unsigned commit_message_parsed:1;
881 struct signature_check signature_check;
882 enum flush_type flush_type;
883 enum trunc_type truncate;
884 const char *message;
885 char *commit_encoding;
886 size_t width, indent1, indent2;
887 int auto_color;
888 int padding;
889
890 /* These offsets are relative to the start of the commit message. */
891 struct chunk author;
892 struct chunk committer;
893 size_t message_off;
894 size_t subject_off;
895 size_t body_off;
896
897 /* The following ones are relative to the result struct strbuf. */
898 size_t wrap_start;
899 };
900
901 static void parse_commit_header(struct format_commit_context *context)
902 {
903 const char *msg = context->message;
904 int i;
905
906 for (i = 0; msg[i]; i++) {
907 const char *name;
908 int eol;
909 for (eol = i; msg[eol] && msg[eol] != '\n'; eol++)
910 ; /* do nothing */
911
912 if (i == eol) {
913 break;
914 } else if (skip_prefix(msg + i, "author ", &name)) {
915 context->author.off = name - msg;
916 context->author.len = msg + eol - name;
917 } else if (skip_prefix(msg + i, "committer ", &name)) {
918 context->committer.off = name - msg;
919 context->committer.len = msg + eol - name;
920 }
921 i = eol;
922 }
923 context->message_off = i;
924 context->commit_header_parsed = 1;
925 }
926
927 static int istitlechar(char c)
928 {
929 return (c >= 'a' && c <= 'z') || (c >= 'A' && c <= 'Z') ||
930 (c >= '0' && c <= '9') || c == '.' || c == '_';
931 }
932
933 void format_sanitized_subject(struct strbuf *sb, const char *msg, size_t len)
934 {
935 size_t trimlen;
936 size_t start_len = sb->len;
937 int space = 2;
938 int i;
939
940 for (i = 0; i < len; i++) {
941 if (istitlechar(msg[i])) {
942 if (space == 1)
943 strbuf_addch(sb, '-');
944 space = 0;
945 strbuf_addch(sb, msg[i]);
946 if (msg[i] == '.')
947 while (msg[i+1] == '.')
948 i++;
949 } else
950 space |= 1;
951 }
952
953 /* trim any trailing '.' or '-' characters */
954 trimlen = 0;
955 while (sb->len - trimlen > start_len &&
956 (sb->buf[sb->len - 1 - trimlen] == '.'
957 || sb->buf[sb->len - 1 - trimlen] == '-'))
958 trimlen++;
959 strbuf_remove(sb, sb->len - trimlen, trimlen);
960 }
961
962 const char *format_subject(struct strbuf *sb, const char *msg,
963 const char *line_separator)
964 {
965 int first = 1;
966
967 for (;;) {
968 const char *line = msg;
969 int linelen = get_one_line(line);
970
971 msg += linelen;
972 if (!linelen || is_blank_line(line, &linelen))
973 break;
974
975 if (!sb)
976 continue;
977 strbuf_grow(sb, linelen + 2);
978 if (!first)
979 strbuf_addstr(sb, line_separator);
980 strbuf_add(sb, line, linelen);
981 first = 0;
982 }
983 return msg;
984 }
985
986 static void parse_commit_message(struct format_commit_context *c)
987 {
988 const char *msg = c->message + c->message_off;
989 const char *start = c->message;
990
991 msg = skip_blank_lines(msg);
992 c->subject_off = msg - start;
993
994 msg = format_subject(NULL, msg, NULL);
995 msg = skip_blank_lines(msg);
996 c->body_off = msg - start;
997
998 c->commit_message_parsed = 1;
999 }
1000
1001 static void strbuf_wrap(struct strbuf *sb, size_t pos,
1002 size_t width, size_t indent1, size_t indent2)
1003 {
1004 struct strbuf tmp = STRBUF_INIT;
1005
1006 if (pos)
1007 strbuf_add(&tmp, sb->buf, pos);
1008 strbuf_add_wrapped_text(&tmp, sb->buf + pos,
1009 cast_size_t_to_int(indent1),
1010 cast_size_t_to_int(indent2),
1011 cast_size_t_to_int(width));
1012 strbuf_swap(&tmp, sb);
1013 strbuf_release(&tmp);
1014 }
1015
1016 static void rewrap_message_tail(struct strbuf *sb,
1017 struct format_commit_context *c,
1018 size_t new_width, size_t new_indent1,
1019 size_t new_indent2)
1020 {
1021 if (c->width == new_width && c->indent1 == new_indent1 &&
1022 c->indent2 == new_indent2)
1023 return;
1024 if (c->wrap_start < sb->len)
1025 strbuf_wrap(sb, c->wrap_start, c->width, c->indent1, c->indent2);
1026 c->wrap_start = sb->len;
1027 c->width = new_width;
1028 c->indent1 = new_indent1;
1029 c->indent2 = new_indent2;
1030 }
1031
1032 static int format_reflog_person(struct strbuf *sb,
1033 char part,
1034 struct reflog_walk_info *log,
1035 const struct date_mode *dmode)
1036 {
1037 const char *ident;
1038
1039 if (!log)
1040 return 2;
1041
1042 ident = get_reflog_ident(log);
1043 if (!ident)
1044 return 2;
1045
1046 return format_person_part(sb, part, ident, strlen(ident), dmode);
1047 }
1048
1049 static size_t parse_color(struct strbuf *sb, /* in UTF-8 */
1050 const char *placeholder,
1051 struct format_commit_context *c)
1052 {
1053 const char *rest = placeholder;
1054 const char *basic_color = NULL;
1055
1056 if (placeholder[1] == '(') {
1057 const char *begin = placeholder + 2;
1058 const char *end = strchr(begin, ')');
1059 char color[COLOR_MAXLEN];
1060
1061 if (!end)
1062 return 0;
1063
1064 if (skip_prefix(begin, "auto,", &begin)) {
1065 if (!want_color(c->pretty_ctx->color))
1066 return end - placeholder + 1;
1067 } else if (skip_prefix(begin, "always,", &begin)) {
1068 /* nothing to do; we do not respect want_color at all */
1069 } else {
1070 /* the default is the same as "auto" */
1071 if (!want_color(c->pretty_ctx->color))
1072 return end - placeholder + 1;
1073 }
1074
1075 if (color_parse_mem(begin, end - begin, color) < 0)
1076 die(_("unable to parse --pretty format"));
1077 strbuf_addstr(sb, color);
1078 return end - placeholder + 1;
1079 }
1080
1081 /*
1082 * We handle things like "%C(red)" above; for historical reasons, there
1083 * are a few colors that can be specified without parentheses (and
1084 * they cannot support things like "auto" or "always" at all).
1085 */
1086 if (skip_prefix(placeholder + 1, "red", &rest))
1087 basic_color = GIT_COLOR_RED;
1088 else if (skip_prefix(placeholder + 1, "green", &rest))
1089 basic_color = GIT_COLOR_GREEN;
1090 else if (skip_prefix(placeholder + 1, "blue", &rest))
1091 basic_color = GIT_COLOR_BLUE;
1092 else if (skip_prefix(placeholder + 1, "reset", &rest))
1093 basic_color = GIT_COLOR_RESET;
1094
1095 if (basic_color && want_color(c->pretty_ctx->color))
1096 strbuf_addstr(sb, basic_color);
1097
1098 return rest - placeholder;
1099 }
1100
1101 static size_t parse_padding_placeholder(const char *placeholder,
1102 struct format_commit_context *c)
1103 {
1104 const char *ch = placeholder;
1105 enum flush_type flush_type;
1106 int to_column = 0;
1107
1108 switch (*ch++) {
1109 case '<':
1110 flush_type = flush_right;
1111 break;
1112 case '>':
1113 if (*ch == '<') {
1114 flush_type = flush_both;
1115 ch++;
1116 } else if (*ch == '>') {
1117 flush_type = flush_left_and_steal;
1118 ch++;
1119 } else
1120 flush_type = flush_left;
1121 break;
1122 default:
1123 return 0;
1124 }
1125
1126 /* the next value means "wide enough to that column" */
1127 if (*ch == '|') {
1128 to_column = 1;
1129 ch++;
1130 }
1131
1132 if (*ch == '(') {
1133 const char *start = ch + 1;
1134 const char *end = start + strcspn(start, ",)");
1135 char *next;
1136 int width;
1137 if (!*end || end == start)
1138 return 0;
1139 width = strtol(start, &next, 10);
1140
1141 /*
1142 * We need to limit the amount of padding, or otherwise this
1143 * would allow the user to pad the buffer by arbitrarily many
1144 * bytes and thus cause resource exhaustion.
1145 */
1146 if (width < -FORMATTING_LIMIT || width > FORMATTING_LIMIT)
1147 return 0;
1148
1149 if (next == start || width == 0)
1150 return 0;
1151 if (width < 0) {
1152 if (to_column)
1153 width += term_columns();
1154 if (width < 0)
1155 return 0;
1156 }
1157 c->padding = to_column ? -width : width;
1158 c->flush_type = flush_type;
1159
1160 if (*end == ',') {
1161 start = end + 1;
1162 end = strchr(start, ')');
1163 if (!end || end == start)
1164 return 0;
1165 if (starts_with(start, "trunc)"))
1166 c->truncate = trunc_right;
1167 else if (starts_with(start, "ltrunc)"))
1168 c->truncate = trunc_left;
1169 else if (starts_with(start, "mtrunc)"))
1170 c->truncate = trunc_middle;
1171 else
1172 return 0;
1173 } else
1174 c->truncate = trunc_none;
1175
1176 return end - placeholder + 1;
1177 }
1178 return 0;
1179 }
1180
1181 static int match_placeholder_arg_value(const char *to_parse, const char *candidate,
1182 const char **end, const char **valuestart,
1183 size_t *valuelen)
1184 {
1185 const char *p;
1186
1187 if (!(skip_prefix(to_parse, candidate, &p)))
1188 return 0;
1189 if (valuestart) {
1190 if (*p == '=') {
1191 *valuestart = p + 1;
1192 *valuelen = strcspn(*valuestart, ",)");
1193 p = *valuestart + *valuelen;
1194 } else {
1195 if (*p != ',' && *p != ')')
1196 return 0;
1197 *valuestart = NULL;
1198 *valuelen = 0;
1199 }
1200 }
1201 if (*p == ',') {
1202 *end = p + 1;
1203 return 1;
1204 }
1205 if (*p == ')') {
1206 *end = p;
1207 return 1;
1208 }
1209 return 0;
1210 }
1211
1212 static int match_placeholder_bool_arg(const char *to_parse, const char *candidate,
1213 const char **end, int *val)
1214 {
1215 const char *argval;
1216 char *strval;
1217 size_t arglen;
1218 int v;
1219
1220 if (!match_placeholder_arg_value(to_parse, candidate, end, &argval, &arglen))
1221 return 0;
1222
1223 if (!argval) {
1224 *val = 1;
1225 return 1;
1226 }
1227
1228 strval = xstrndup(argval, arglen);
1229 v = git_parse_maybe_bool(strval);
1230 free(strval);
1231
1232 if (v == -1)
1233 return 0;
1234
1235 *val = v;
1236
1237 return 1;
1238 }
1239
1240 static int format_trailer_match_cb(const struct strbuf *key, void *ud)
1241 {
1242 const struct string_list *list = ud;
1243 const struct string_list_item *item;
1244
1245 for_each_string_list_item (item, list) {
1246 if (key->len == (uintptr_t)item->util &&
1247 !strncasecmp(item->string, key->buf, key->len))
1248 return 1;
1249 }
1250 return 0;
1251 }
1252
1253 int format_set_trailers_options(struct process_trailer_options *opts,
1254 struct string_list *filter_list,
1255 struct strbuf *sepbuf,
1256 struct strbuf *kvsepbuf,
1257 const char **arg,
1258 char **invalid_arg)
1259 {
1260 for (;;) {
1261 const char *argval;
1262 size_t arglen;
1263
1264 if (**arg == ')')
1265 break;
1266
1267 if (match_placeholder_arg_value(*arg, "key", arg, &argval, &arglen)) {
1268 uintptr_t len = arglen;
1269
1270 if (!argval)
1271 return -1;
1272
1273 if (len && argval[len - 1] == ':')
1274 len--;
1275 string_list_append(filter_list, argval)->util = (char *)len;
1276
1277 opts->filter = format_trailer_match_cb;
1278 opts->filter_data = filter_list;
1279 opts->only_trailers = 1;
1280 } else if (match_placeholder_arg_value(*arg, "separator", arg, &argval, &arglen)) {
1281 char *fmt;
1282
1283 strbuf_reset(sepbuf);
1284 fmt = xstrndup(argval, arglen);
1285 strbuf_expand(sepbuf, fmt, strbuf_expand_literal_cb, NULL);
1286 free(fmt);
1287 opts->separator = sepbuf;
1288 } else if (match_placeholder_arg_value(*arg, "key_value_separator", arg, &argval, &arglen)) {
1289 char *fmt;
1290
1291 strbuf_reset(kvsepbuf);
1292 fmt = xstrndup(argval, arglen);
1293 strbuf_expand(kvsepbuf, fmt, strbuf_expand_literal_cb, NULL);
1294 free(fmt);
1295 opts->key_value_separator = kvsepbuf;
1296 } else if (!match_placeholder_bool_arg(*arg, "only", arg, &opts->only_trailers) &&
1297 !match_placeholder_bool_arg(*arg, "unfold", arg, &opts->unfold) &&
1298 !match_placeholder_bool_arg(*arg, "keyonly", arg, &opts->key_only) &&
1299 !match_placeholder_bool_arg(*arg, "valueonly", arg, &opts->value_only)) {
1300 if (invalid_arg) {
1301 size_t len = strcspn(*arg, ",)");
1302 *invalid_arg = xstrndup(*arg, len);
1303 }
1304 return -1;
1305 }
1306 }
1307 return 0;
1308 }
1309
1310 static size_t parse_describe_args(const char *start, struct strvec *args)
1311 {
1312 struct {
1313 char *name;
1314 enum {
1315 DESCRIBE_ARG_BOOL,
1316 DESCRIBE_ARG_INTEGER,
1317 DESCRIBE_ARG_STRING,
1318 } type;
1319 } option[] = {
1320 { "tags", DESCRIBE_ARG_BOOL},
1321 { "abbrev", DESCRIBE_ARG_INTEGER },
1322 { "exclude", DESCRIBE_ARG_STRING },
1323 { "match", DESCRIBE_ARG_STRING },
1324 };
1325 const char *arg = start;
1326
1327 for (;;) {
1328 int found = 0;
1329 const char *argval;
1330 size_t arglen = 0;
1331 int optval = 0;
1332 int i;
1333
1334 for (i = 0; !found && i < ARRAY_SIZE(option); i++) {
1335 switch (option[i].type) {
1336 case DESCRIBE_ARG_BOOL:
1337 if (match_placeholder_bool_arg(arg, option[i].name, &arg, &optval)) {
1338 if (optval)
1339 strvec_pushf(args, "--%s", option[i].name);
1340 else
1341 strvec_pushf(args, "--no-%s", option[i].name);
1342 found = 1;
1343 }
1344 break;
1345 case DESCRIBE_ARG_INTEGER:
1346 if (match_placeholder_arg_value(arg, option[i].name, &arg,
1347 &argval, &arglen)) {
1348 char *endptr;
1349 if (!arglen)
1350 return 0;
1351 strtol(argval, &endptr, 10);
1352 if (endptr - argval != arglen)
1353 return 0;
1354 strvec_pushf(args, "--%s=%.*s", option[i].name, (int)arglen, argval);
1355 found = 1;
1356 }
1357 break;
1358 case DESCRIBE_ARG_STRING:
1359 if (match_placeholder_arg_value(arg, option[i].name, &arg,
1360 &argval, &arglen)) {
1361 if (!arglen)
1362 return 0;
1363 strvec_pushf(args, "--%s=%.*s", option[i].name, (int)arglen, argval);
1364 found = 1;
1365 }
1366 break;
1367 }
1368 }
1369 if (!found)
1370 break;
1371
1372 }
1373 return arg - start;
1374 }
1375
1376 static size_t format_commit_one(struct strbuf *sb, /* in UTF-8 */
1377 const char *placeholder,
1378 void *context)
1379 {
1380 struct format_commit_context *c = context;
1381 const struct commit *commit = c->commit;
1382 const char *msg = c->message;
1383 struct commit_list *p;
1384 const char *arg, *eol;
1385 size_t res;
1386 char **slot;
1387
1388 /* these are independent of the commit */
1389 res = strbuf_expand_literal_cb(sb, placeholder, NULL);
1390 if (res)
1391 return res;
1392
1393 switch (placeholder[0]) {
1394 case 'C':
1395 if (starts_with(placeholder + 1, "(auto)")) {
1396 c->auto_color = want_color(c->pretty_ctx->color);
1397 if (c->auto_color && sb->len)
1398 strbuf_addstr(sb, GIT_COLOR_RESET);
1399 return 7; /* consumed 7 bytes, "C(auto)" */
1400 } else {
1401 int ret = parse_color(sb, placeholder, c);
1402 if (ret)
1403 c->auto_color = 0;
1404 /*
1405 * Otherwise, we decided to treat %C<unknown>
1406 * as a literal string, and the previous
1407 * %C(auto) is still valid.
1408 */
1409 return ret;
1410 }
1411 case 'w':
1412 if (placeholder[1] == '(') {
1413 unsigned long width = 0, indent1 = 0, indent2 = 0;
1414 char *next;
1415 const char *start = placeholder + 2;
1416 const char *end = strchr(start, ')');
1417 if (!end)
1418 return 0;
1419 if (end > start) {
1420 width = strtoul(start, &next, 10);
1421 if (*next == ',') {
1422 indent1 = strtoul(next + 1, &next, 10);
1423 if (*next == ',') {
1424 indent2 = strtoul(next + 1,
1425 &next, 10);
1426 }
1427 }
1428 if (*next != ')')
1429 return 0;
1430 }
1431
1432 /*
1433 * We need to limit the format here as it allows the
1434 * user to prepend arbitrarily many bytes to the buffer
1435 * when rewrapping.
1436 */
1437 if (width > FORMATTING_LIMIT ||
1438 indent1 > FORMATTING_LIMIT ||
1439 indent2 > FORMATTING_LIMIT)
1440 return 0;
1441 rewrap_message_tail(sb, c, width, indent1, indent2);
1442 return end - placeholder + 1;
1443 } else
1444 return 0;
1445
1446 case '<':
1447 case '>':
1448 return parse_padding_placeholder(placeholder, c);
1449 }
1450
1451 if (skip_prefix(placeholder, "(describe", &arg)) {
1452 struct child_process cmd = CHILD_PROCESS_INIT;
1453 struct strbuf out = STRBUF_INIT;
1454 struct strbuf err = STRBUF_INIT;
1455 struct pretty_print_describe_status *describe_status;
1456
1457 describe_status = c->pretty_ctx->describe_status;
1458 if (describe_status) {
1459 if (!describe_status->max_invocations)
1460 return 0;
1461 describe_status->max_invocations--;
1462 }
1463
1464 cmd.git_cmd = 1;
1465 strvec_push(&cmd.args, "describe");
1466
1467 if (*arg == ':') {
1468 arg++;
1469 arg += parse_describe_args(arg, &cmd.args);
1470 }
1471
1472 if (*arg != ')') {
1473 child_process_clear(&cmd);
1474 return 0;
1475 }
1476
1477 strvec_push(&cmd.args, oid_to_hex(&commit->object.oid));
1478 pipe_command(&cmd, NULL, 0, &out, 0, &err, 0);
1479 strbuf_rtrim(&out);
1480 strbuf_addbuf(sb, &out);
1481 strbuf_release(&out);
1482 strbuf_release(&err);
1483 return arg - placeholder + 1;
1484 }
1485
1486 /* these depend on the commit */
1487 if (!commit->object.parsed)
1488 parse_object(the_repository, &commit->object.oid);
1489
1490 switch (placeholder[0]) {
1491 case 'H': /* commit hash */
1492 strbuf_addstr(sb, diff_get_color(c->auto_color, DIFF_COMMIT));
1493 strbuf_addstr(sb, oid_to_hex(&commit->object.oid));
1494 strbuf_addstr(sb, diff_get_color(c->auto_color, DIFF_RESET));
1495 return 1;
1496 case 'h': /* abbreviated commit hash */
1497 strbuf_addstr(sb, diff_get_color(c->auto_color, DIFF_COMMIT));
1498 strbuf_add_unique_abbrev(sb, &commit->object.oid,
1499 c->pretty_ctx->abbrev);
1500 strbuf_addstr(sb, diff_get_color(c->auto_color, DIFF_RESET));
1501 return 1;
1502 case 'T': /* tree hash */
1503 strbuf_addstr(sb, oid_to_hex(get_commit_tree_oid(commit)));
1504 return 1;
1505 case 't': /* abbreviated tree hash */
1506 strbuf_add_unique_abbrev(sb,
1507 get_commit_tree_oid(commit),
1508 c->pretty_ctx->abbrev);
1509 return 1;
1510 case 'P': /* parent hashes */
1511 for (p = commit->parents; p; p = p->next) {
1512 if (p != commit->parents)
1513 strbuf_addch(sb, ' ');
1514 strbuf_addstr(sb, oid_to_hex(&p->item->object.oid));
1515 }
1516 return 1;
1517 case 'p': /* abbreviated parent hashes */
1518 for (p = commit->parents; p; p = p->next) {
1519 if (p != commit->parents)
1520 strbuf_addch(sb, ' ');
1521 strbuf_add_unique_abbrev(sb, &p->item->object.oid,
1522 c->pretty_ctx->abbrev);
1523 }
1524 return 1;
1525 case 'm': /* left/right/bottom */
1526 strbuf_addstr(sb, get_revision_mark(NULL, commit));
1527 return 1;
1528 case 'd':
1529 format_decorations(sb, commit, c->auto_color);
1530 return 1;
1531 case 'D':
1532 format_decorations_extended(sb, commit, c->auto_color, "", ", ", "");
1533 return 1;
1534 case 'S': /* tag/branch like --source */
1535 if (!(c->pretty_ctx->rev && c->pretty_ctx->rev->sources))
1536 return 0;
1537 slot = revision_sources_at(c->pretty_ctx->rev->sources, commit);
1538 if (!(slot && *slot))
1539 return 0;
1540 strbuf_addstr(sb, *slot);
1541 return 1;
1542 case 'g': /* reflog info */
1543 switch(placeholder[1]) {
1544 case 'd': /* reflog selector */
1545 case 'D':
1546 if (c->pretty_ctx->reflog_info)
1547 get_reflog_selector(sb,
1548 c->pretty_ctx->reflog_info,
1549 &c->pretty_ctx->date_mode,
1550 c->pretty_ctx->date_mode_explicit,
1551 (placeholder[1] == 'd'));
1552 return 2;
1553 case 's': /* reflog message */
1554 if (c->pretty_ctx->reflog_info)
1555 get_reflog_message(sb, c->pretty_ctx->reflog_info);
1556 return 2;
1557 case 'n':
1558 case 'N':
1559 case 'e':
1560 case 'E':
1561 return format_reflog_person(sb,
1562 placeholder[1],
1563 c->pretty_ctx->reflog_info,
1564 &c->pretty_ctx->date_mode);
1565 }
1566 return 0; /* unknown %g placeholder */
1567 case 'N':
1568 if (c->pretty_ctx->notes_message) {
1569 strbuf_addstr(sb, c->pretty_ctx->notes_message);
1570 return 1;
1571 }
1572 return 0;
1573 }
1574
1575 if (placeholder[0] == 'G') {
1576 if (!c->signature_check.result)
1577 check_commit_signature(c->commit, &(c->signature_check));
1578 switch (placeholder[1]) {
1579 case 'G':
1580 if (c->signature_check.output)
1581 strbuf_addstr(sb, c->signature_check.output);
1582 break;
1583 case '?':
1584 switch (c->signature_check.result) {
1585 case 'G':
1586 switch (c->signature_check.trust_level) {
1587 case TRUST_UNDEFINED:
1588 case TRUST_NEVER:
1589 strbuf_addch(sb, 'U');
1590 break;
1591 default:
1592 strbuf_addch(sb, 'G');
1593 break;
1594 }
1595 break;
1596 case 'B':
1597 case 'E':
1598 case 'N':
1599 case 'X':
1600 case 'Y':
1601 case 'R':
1602 strbuf_addch(sb, c->signature_check.result);
1603 }
1604 break;
1605 case 'S':
1606 if (c->signature_check.signer)
1607 strbuf_addstr(sb, c->signature_check.signer);
1608 break;
1609 case 'K':
1610 if (c->signature_check.key)
1611 strbuf_addstr(sb, c->signature_check.key);
1612 break;
1613 case 'F':
1614 if (c->signature_check.fingerprint)
1615 strbuf_addstr(sb, c->signature_check.fingerprint);
1616 break;
1617 case 'P':
1618 if (c->signature_check.primary_key_fingerprint)
1619 strbuf_addstr(sb, c->signature_check.primary_key_fingerprint);
1620 break;
1621 case 'T':
1622 strbuf_addstr(sb, gpg_trust_level_to_str(c->signature_check.trust_level));
1623 break;
1624 default:
1625 return 0;
1626 }
1627 return 2;
1628 }
1629
1630 /* For the rest we have to parse the commit header. */
1631 if (!c->commit_header_parsed) {
1632 msg = c->message =
1633 repo_logmsg_reencode(c->repository, commit,
1634 &c->commit_encoding, "UTF-8");
1635 parse_commit_header(c);
1636 }
1637
1638 switch (placeholder[0]) {
1639 case 'a': /* author ... */
1640 return format_person_part(sb, placeholder[1],
1641 msg + c->author.off, c->author.len,
1642 &c->pretty_ctx->date_mode);
1643 case 'c': /* committer ... */
1644 return format_person_part(sb, placeholder[1],
1645 msg + c->committer.off, c->committer.len,
1646 &c->pretty_ctx->date_mode);
1647 case 'e': /* encoding */
1648 if (c->commit_encoding)
1649 strbuf_addstr(sb, c->commit_encoding);
1650 return 1;
1651 case 'B': /* raw body */
1652 /* message_off is always left at the initial newline */
1653 strbuf_addstr(sb, msg + c->message_off + 1);
1654 return 1;
1655 }
1656
1657 /* Now we need to parse the commit message. */
1658 if (!c->commit_message_parsed)
1659 parse_commit_message(c);
1660
1661 switch (placeholder[0]) {
1662 case 's': /* subject */
1663 format_subject(sb, msg + c->subject_off, " ");
1664 return 1;
1665 case 'f': /* sanitized subject */
1666 eol = strchrnul(msg + c->subject_off, '\n');
1667 format_sanitized_subject(sb, msg + c->subject_off, eol - (msg + c->subject_off));
1668 return 1;
1669 case 'b': /* body */
1670 strbuf_addstr(sb, msg + c->body_off);
1671 return 1;
1672 }
1673
1674 if (skip_prefix(placeholder, "(trailers", &arg)) {
1675 struct process_trailer_options opts = PROCESS_TRAILER_OPTIONS_INIT;
1676 struct string_list filter_list = STRING_LIST_INIT_NODUP;
1677 struct strbuf sepbuf = STRBUF_INIT;
1678 struct strbuf kvsepbuf = STRBUF_INIT;
1679 size_t ret = 0;
1680
1681 opts.no_divider = 1;
1682
1683 if (*arg == ':') {
1684 arg++;
1685 if (format_set_trailers_options(&opts, &filter_list, &sepbuf, &kvsepbuf, &arg, NULL))
1686 goto trailer_out;
1687 }
1688 if (*arg == ')') {
1689 format_trailers_from_commit(sb, msg + c->subject_off, &opts);
1690 ret = arg - placeholder + 1;
1691 }
1692 trailer_out:
1693 string_list_clear(&filter_list, 0);
1694 strbuf_release(&sepbuf);
1695 return ret;
1696 }
1697
1698 return 0; /* unknown placeholder */
1699 }
1700
1701 static size_t format_and_pad_commit(struct strbuf *sb, /* in UTF-8 */
1702 const char *placeholder,
1703 struct format_commit_context *c)
1704 {
1705 struct strbuf local_sb = STRBUF_INIT;
1706 size_t total_consumed = 0;
1707 int len, padding = c->padding;
1708
1709 if (padding < 0) {
1710 const char *start = strrchr(sb->buf, '\n');
1711 int occupied;
1712 if (!start)
1713 start = sb->buf;
1714 occupied = utf8_strnwidth(start, strlen(start), 1);
1715 occupied += c->pretty_ctx->graph_width;
1716 padding = (-padding) - occupied;
1717 }
1718 while (1) {
1719 int modifier = *placeholder == 'C';
1720 size_t consumed = format_commit_one(&local_sb, placeholder, c);
1721 total_consumed += consumed;
1722
1723 if (!modifier)
1724 break;
1725
1726 placeholder += consumed;
1727 if (*placeholder != '%')
1728 break;
1729 placeholder++;
1730 total_consumed++;
1731 }
1732 len = utf8_strnwidth(local_sb.buf, local_sb.len, 1);
1733
1734 if (c->flush_type == flush_left_and_steal) {
1735 const char *ch = sb->buf + sb->len - 1;
1736 while (len > padding && ch > sb->buf) {
1737 const char *p;
1738 if (*ch == ' ') {
1739 ch--;
1740 padding++;
1741 continue;
1742 }
1743 /* check for trailing ansi sequences */
1744 if (*ch != 'm')
1745 break;
1746 p = ch - 1;
1747 while (p > sb->buf && ch - p < 10 && *p != '\033')
1748 p--;
1749 if (*p != '\033' ||
1750 ch + 1 - p != display_mode_esc_sequence_len(p))
1751 break;
1752 /*
1753 * got a good ansi sequence, put it back to
1754 * local_sb as we're cutting sb
1755 */
1756 strbuf_insert(&local_sb, 0, p, ch + 1 - p);
1757 ch = p - 1;
1758 }
1759 strbuf_setlen(sb, ch + 1 - sb->buf);
1760 c->flush_type = flush_left;
1761 }
1762
1763 if (len > padding) {
1764 switch (c->truncate) {
1765 case trunc_left:
1766 strbuf_utf8_replace(&local_sb,
1767 0, len - (padding - 2),
1768 "..");
1769 break;
1770 case trunc_middle:
1771 strbuf_utf8_replace(&local_sb,
1772 padding / 2 - 1,
1773 len - (padding - 2),
1774 "..");
1775 break;
1776 case trunc_right:
1777 strbuf_utf8_replace(&local_sb,
1778 padding - 2, len - (padding - 2),
1779 "..");
1780 break;
1781 case trunc_none:
1782 break;
1783 }
1784 strbuf_addbuf(sb, &local_sb);
1785 } else {
1786 size_t sb_len = sb->len, offset = 0;
1787 if (c->flush_type == flush_left)
1788 offset = padding - len;
1789 else if (c->flush_type == flush_both)
1790 offset = (padding - len) / 2;
1791 /*
1792 * we calculate padding in columns, now
1793 * convert it back to chars
1794 */
1795 padding = padding - len + local_sb.len;
1796 strbuf_addchars(sb, ' ', padding);
1797 memcpy(sb->buf + sb_len + offset, local_sb.buf,
1798 local_sb.len);
1799 }
1800 strbuf_release(&local_sb);
1801 c->flush_type = no_flush;
1802 return total_consumed;
1803 }
1804
1805 static size_t format_commit_item(struct strbuf *sb, /* in UTF-8 */
1806 const char *placeholder,
1807 void *context)
1808 {
1809 size_t consumed, orig_len;
1810 enum {
1811 NO_MAGIC,
1812 ADD_LF_BEFORE_NON_EMPTY,
1813 DEL_LF_BEFORE_EMPTY,
1814 ADD_SP_BEFORE_NON_EMPTY
1815 } magic = NO_MAGIC;
1816
1817 switch (placeholder[0]) {
1818 case '-':
1819 magic = DEL_LF_BEFORE_EMPTY;
1820 break;
1821 case '+':
1822 magic = ADD_LF_BEFORE_NON_EMPTY;
1823 break;
1824 case ' ':
1825 magic = ADD_SP_BEFORE_NON_EMPTY;
1826 break;
1827 default:
1828 break;
1829 }
1830 if (magic != NO_MAGIC) {
1831 placeholder++;
1832
1833 switch (placeholder[0]) {
1834 case 'w':
1835 /*
1836 * `%+w()` cannot ever expand to a non-empty string,
1837 * and it potentially changes the layout of preceding
1838 * contents. We're thus not able to handle the magic in
1839 * this combination and refuse the pattern.
1840 */
1841 return 0;
1842 };
1843 }
1844
1845 orig_len = sb->len;
1846 if (((struct format_commit_context *)context)->flush_type != no_flush)
1847 consumed = format_and_pad_commit(sb, placeholder, context);
1848 else
1849 consumed = format_commit_one(sb, placeholder, context);
1850 if (magic == NO_MAGIC)
1851 return consumed;
1852
1853 if ((orig_len == sb->len) && magic == DEL_LF_BEFORE_EMPTY) {
1854 while (sb->len && sb->buf[sb->len - 1] == '\n')
1855 strbuf_setlen(sb, sb->len - 1);
1856 } else if (orig_len != sb->len) {
1857 if (magic == ADD_LF_BEFORE_NON_EMPTY)
1858 strbuf_insertstr(sb, orig_len, "\n");
1859 else if (magic == ADD_SP_BEFORE_NON_EMPTY)
1860 strbuf_insertstr(sb, orig_len, " ");
1861 }
1862 return consumed + 1;
1863 }
1864
1865 static size_t userformat_want_item(struct strbuf *sb UNUSED,
1866 const char *placeholder,
1867 void *context)
1868 {
1869 struct userformat_want *w = context;
1870
1871 if (*placeholder == '+' || *placeholder == '-' || *placeholder == ' ')
1872 placeholder++;
1873
1874 switch (*placeholder) {
1875 case 'N':
1876 w->notes = 1;
1877 break;
1878 case 'S':
1879 w->source = 1;
1880 break;
1881 case 'd':
1882 case 'D':
1883 w->decorate = 1;
1884 break;
1885 }
1886 return 0;
1887 }
1888
1889 void userformat_find_requirements(const char *fmt, struct userformat_want *w)
1890 {
1891 struct strbuf dummy = STRBUF_INIT;
1892
1893 if (!fmt) {
1894 if (!user_format)
1895 return;
1896 fmt = user_format;
1897 }
1898 strbuf_expand(&dummy, fmt, userformat_want_item, w);
1899 strbuf_release(&dummy);
1900 }
1901
1902 void repo_format_commit_message(struct repository *r,
1903 const struct commit *commit,
1904 const char *format, struct strbuf *sb,
1905 const struct pretty_print_context *pretty_ctx)
1906 {
1907 struct format_commit_context context = {
1908 .repository = r,
1909 .commit = commit,
1910 .pretty_ctx = pretty_ctx,
1911 .wrap_start = sb->len
1912 };
1913 const char *output_enc = pretty_ctx->output_encoding;
1914 const char *utf8 = "UTF-8";
1915
1916 strbuf_expand(sb, format, format_commit_item, &context);
1917 rewrap_message_tail(sb, &context, 0, 0, 0);
1918
1919 /*
1920 * Convert output to an actual output encoding; note that
1921 * format_commit_item() will always use UTF-8, so we don't
1922 * have to bother if that's what the output wants.
1923 */
1924 if (output_enc) {
1925 if (same_encoding(utf8, output_enc))
1926 output_enc = NULL;
1927 } else {
1928 if (context.commit_encoding &&
1929 !same_encoding(context.commit_encoding, utf8))
1930 output_enc = context.commit_encoding;
1931 }
1932
1933 if (output_enc) {
1934 size_t outsz;
1935 char *out = reencode_string_len(sb->buf, sb->len,
1936 output_enc, utf8, &outsz);
1937 if (out)
1938 strbuf_attach(sb, out, outsz, outsz + 1);
1939 }
1940
1941 free(context.commit_encoding);
1942 repo_unuse_commit_buffer(r, commit, context.message);
1943 }
1944
1945 static void pp_header(struct pretty_print_context *pp,
1946 const char *encoding,
1947 const struct commit *commit,
1948 const char **msg_p,
1949 struct strbuf *sb)
1950 {
1951 int parents_shown = 0;
1952
1953 for (;;) {
1954 const char *name, *line = *msg_p;
1955 int linelen = get_one_line(*msg_p);
1956
1957 if (!linelen)
1958 return;
1959 *msg_p += linelen;
1960
1961 if (linelen == 1)
1962 /* End of header */
1963 return;
1964
1965 if (pp->fmt == CMIT_FMT_RAW) {
1966 strbuf_add(sb, line, linelen);
1967 continue;
1968 }
1969
1970 if (starts_with(line, "parent ")) {
1971 if (linelen != the_hash_algo->hexsz + 8)
1972 die("bad parent line in commit");
1973 continue;
1974 }
1975
1976 if (!parents_shown) {
1977 unsigned num = commit_list_count(commit->parents);
1978 /* with enough slop */
1979 strbuf_grow(sb, num * (GIT_MAX_HEXSZ + 10) + 20);
1980 add_merge_info(pp, sb, commit);
1981 parents_shown = 1;
1982 }
1983
1984 /*
1985 * MEDIUM == DEFAULT shows only author with dates.
1986 * FULL shows both authors but not dates.
1987 * FULLER shows both authors and dates.
1988 */
1989 if (skip_prefix(line, "author ", &name)) {
1990 strbuf_grow(sb, linelen + 80);
1991 pp_user_info(pp, "Author", sb, name, encoding);
1992 }
1993 if (skip_prefix(line, "committer ", &name) &&
1994 (pp->fmt == CMIT_FMT_FULL || pp->fmt == CMIT_FMT_FULLER)) {
1995 strbuf_grow(sb, linelen + 80);
1996 pp_user_info(pp, "Commit", sb, name, encoding);
1997 }
1998 }
1999 }
2000
2001 void pp_title_line(struct pretty_print_context *pp,
2002 const char **msg_p,
2003 struct strbuf *sb,
2004 const char *encoding,
2005 int need_8bit_cte)
2006 {
2007 static const int max_length = 78; /* per rfc2047 */
2008 struct strbuf title;
2009
2010 strbuf_init(&title, 80);
2011 *msg_p = format_subject(&title, *msg_p,
2012 pp->preserve_subject ? "\n" : " ");
2013
2014 strbuf_grow(sb, title.len + 1024);
2015 if (pp->print_email_subject) {
2016 if (pp->rev)
2017 fmt_output_email_subject(sb, pp->rev);
2018 if (pp->encode_email_headers &&
2019 needs_rfc2047_encoding(title.buf, title.len))
2020 add_rfc2047(sb, title.buf, title.len,
2021 encoding, RFC2047_SUBJECT);
2022 else
2023 strbuf_add_wrapped_bytes(sb, title.buf, title.len,
2024 -last_line_length(sb), 1, max_length);
2025 } else {
2026 strbuf_addbuf(sb, &title);
2027 }
2028 strbuf_addch(sb, '\n');
2029
2030 if (need_8bit_cte == 0) {
2031 int i;
2032 for (i = 0; i < pp->in_body_headers.nr; i++) {
2033 if (has_non_ascii(pp->in_body_headers.items[i].string)) {
2034 need_8bit_cte = 1;
2035 break;
2036 }
2037 }
2038 }
2039
2040 if (need_8bit_cte > 0) {
2041 const char *header_fmt =
2042 "MIME-Version: 1.0\n"
2043 "Content-Type: text/plain; charset=%s\n"
2044 "Content-Transfer-Encoding: 8bit\n";
2045 strbuf_addf(sb, header_fmt, encoding);
2046 }
2047 if (pp->after_subject) {
2048 strbuf_addstr(sb, pp->after_subject);
2049 }
2050 if (cmit_fmt_is_mail(pp->fmt)) {
2051 strbuf_addch(sb, '\n');
2052 }
2053
2054 if (pp->in_body_headers.nr) {
2055 int i;
2056 for (i = 0; i < pp->in_body_headers.nr; i++) {
2057 strbuf_addstr(sb, pp->in_body_headers.items[i].string);
2058 free(pp->in_body_headers.items[i].string);
2059 }
2060 string_list_clear(&pp->in_body_headers, 0);
2061 strbuf_addch(sb, '\n');
2062 }
2063
2064 strbuf_release(&title);
2065 }
2066
2067 static int pp_utf8_width(const char *start, const char *end)
2068 {
2069 int width = 0;
2070 size_t remain = end - start;
2071
2072 while (remain) {
2073 int n = utf8_width(&start, &remain);
2074 if (n < 0 || !start)
2075 return -1;
2076 width += n;
2077 }
2078 return width;
2079 }
2080
2081 static void strbuf_add_tabexpand(struct strbuf *sb, struct grep_opt *opt,
2082 int color, int tabwidth, const char *line,
2083 int linelen)
2084 {
2085 const char *tab;
2086
2087 while ((tab = memchr(line, '\t', linelen)) != NULL) {
2088 int width = pp_utf8_width(line, tab);
2089
2090 /*
2091 * If it wasn't well-formed utf8, or it
2092 * had characters with badly defined
2093 * width (control characters etc), just
2094 * give up on trying to align things.
2095 */
2096 if (width < 0)
2097 break;
2098
2099 /* Output the data .. */
2100 append_line_with_color(sb, opt, line, tab - line, color,
2101 GREP_CONTEXT_BODY,
2102 GREP_HEADER_FIELD_MAX);
2103
2104 /* .. and the de-tabified tab */
2105 strbuf_addchars(sb, ' ', tabwidth - (width % tabwidth));
2106
2107 /* Skip over the printed part .. */
2108 linelen -= tab + 1 - line;
2109 line = tab + 1;
2110 }
2111
2112 /*
2113 * Print out everything after the last tab without
2114 * worrying about width - there's nothing more to
2115 * align.
2116 */
2117 append_line_with_color(sb, opt, line, linelen, color, GREP_CONTEXT_BODY,
2118 GREP_HEADER_FIELD_MAX);
2119 }
2120
2121 /*
2122 * pp_handle_indent() prints out the intendation, and
2123 * the whole line (without the final newline), after
2124 * de-tabifying.
2125 */
2126 static void pp_handle_indent(struct pretty_print_context *pp,
2127 struct strbuf *sb, int indent,
2128 const char *line, int linelen)
2129 {
2130 struct grep_opt *opt = pp->rev ? &pp->rev->grep_filter : NULL;
2131
2132 strbuf_addchars(sb, ' ', indent);
2133 if (pp->expand_tabs_in_log)
2134 strbuf_add_tabexpand(sb, opt, pp->color, pp->expand_tabs_in_log,
2135 line, linelen);
2136 else
2137 append_line_with_color(sb, opt, line, linelen, pp->color,
2138 GREP_CONTEXT_BODY,
2139 GREP_HEADER_FIELD_MAX);
2140 }
2141
2142 static int is_mboxrd_from(const char *line, int len)
2143 {
2144 /*
2145 * a line matching /^From $/ here would only have len == 4
2146 * at this point because is_empty_line would've trimmed all
2147 * trailing space
2148 */
2149 return len > 4 && starts_with(line + strspn(line, ">"), "From ");
2150 }
2151
2152 void pp_remainder(struct pretty_print_context *pp,
2153 const char **msg_p,
2154 struct strbuf *sb,
2155 int indent)
2156 {
2157 struct grep_opt *opt = pp->rev ? &pp->rev->grep_filter : NULL;
2158 int first = 1;
2159
2160 for (;;) {
2161 const char *line = *msg_p;
2162 int linelen = get_one_line(line);
2163 *msg_p += linelen;
2164
2165 if (!linelen)
2166 break;
2167
2168 if (is_blank_line(line, &linelen)) {
2169 if (first)
2170 continue;
2171 if (pp->fmt == CMIT_FMT_SHORT)
2172 break;
2173 }
2174 first = 0;
2175
2176 strbuf_grow(sb, linelen + indent + 20);
2177 if (indent)
2178 pp_handle_indent(pp, sb, indent, line, linelen);
2179 else if (pp->expand_tabs_in_log)
2180 strbuf_add_tabexpand(sb, opt, pp->color,
2181 pp->expand_tabs_in_log, line,
2182 linelen);
2183 else {
2184 if (pp->fmt == CMIT_FMT_MBOXRD &&
2185 is_mboxrd_from(line, linelen))
2186 strbuf_addch(sb, '>');
2187
2188 append_line_with_color(sb, opt, line, linelen,
2189 pp->color, GREP_CONTEXT_BODY,
2190 GREP_HEADER_FIELD_MAX);
2191 }
2192 strbuf_addch(sb, '\n');
2193 }
2194 }
2195
2196 void pretty_print_commit(struct pretty_print_context *pp,
2197 const struct commit *commit,
2198 struct strbuf *sb)
2199 {
2200 unsigned long beginning_of_body;
2201 int indent = 4;
2202 const char *msg;
2203 const char *reencoded;
2204 const char *encoding;
2205 int need_8bit_cte = pp->need_8bit_cte;
2206
2207 if (pp->fmt == CMIT_FMT_USERFORMAT) {
2208 repo_format_commit_message(the_repository, commit,
2209 user_format, sb, pp);
2210 return;
2211 }
2212
2213 encoding = get_log_output_encoding();
2214 msg = reencoded = repo_logmsg_reencode(the_repository, commit, NULL,
2215 encoding);
2216
2217 if (pp->fmt == CMIT_FMT_ONELINE || cmit_fmt_is_mail(pp->fmt))
2218 indent = 0;
2219
2220 /*
2221 * We need to check and emit Content-type: to mark it
2222 * as 8-bit if we haven't done so.
2223 */
2224 if (cmit_fmt_is_mail(pp->fmt) && need_8bit_cte == 0) {
2225 int i, ch, in_body;
2226
2227 for (in_body = i = 0; (ch = msg[i]); i++) {
2228 if (!in_body) {
2229 /* author could be non 7-bit ASCII but
2230 * the log may be so; skip over the
2231 * header part first.
2232 */
2233 if (ch == '\n' && msg[i+1] == '\n')
2234 in_body = 1;
2235 }
2236 else if (non_ascii(ch)) {
2237 need_8bit_cte = 1;
2238 break;
2239 }
2240 }
2241 }
2242
2243 pp_header(pp, encoding, commit, &msg, sb);
2244 if (pp->fmt != CMIT_FMT_ONELINE && !pp->print_email_subject) {
2245 strbuf_addch(sb, '\n');
2246 }
2247
2248 /* Skip excess blank lines at the beginning of body, if any... */
2249 msg = skip_blank_lines(msg);
2250
2251 /* These formats treat the title line specially. */
2252 if (pp->fmt == CMIT_FMT_ONELINE || cmit_fmt_is_mail(pp->fmt))
2253 pp_title_line(pp, &msg, sb, encoding, need_8bit_cte);
2254
2255 beginning_of_body = sb->len;
2256 if (pp->fmt != CMIT_FMT_ONELINE)
2257 pp_remainder(pp, &msg, sb, indent);
2258 strbuf_rtrim(sb);
2259
2260 /* Make sure there is an EOLN for the non-oneline case */
2261 if (pp->fmt != CMIT_FMT_ONELINE)
2262 strbuf_addch(sb, '\n');
2263
2264 /*
2265 * The caller may append additional body text in e-mail
2266 * format. Make sure we did not strip the blank line
2267 * between the header and the body.
2268 */
2269 if (cmit_fmt_is_mail(pp->fmt) && sb->len <= beginning_of_body)
2270 strbuf_addch(sb, '\n');
2271
2272 repo_unuse_commit_buffer(the_repository, commit, reencoded);
2273 }
2274
2275 void pp_commit_easy(enum cmit_fmt fmt, const struct commit *commit,
2276 struct strbuf *sb)
2277 {
2278 struct pretty_print_context pp = {0};
2279 pp.fmt = fmt;
2280 pretty_print_commit(&pp, commit, sb);
2281 }
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