1#include "cache.h"
2#include "commit.h"
3#include "utf8.h"
4#include "diff.h"
5#include "revision.h"
6#include "string-list.h"
7#include "mailmap.h"
8#include "log-tree.h"
9#include "notes.h"
10#include "color.h"
11#include "reflog-walk.h"
12#include "gpg-interface.h"
13
14static char *user_format;
15static struct cmt_fmt_map {
16 const char *name;
17 enum cmit_fmt format;
18 int is_tformat;
19 int is_alias;
20 const char *user_format;
21} *commit_formats;
22static size_t builtin_formats_len;
23static size_t commit_formats_len;
24static size_t commit_formats_alloc;
25static struct cmt_fmt_map *find_commit_format(const char *sought);
26
27static void save_user_format(struct rev_info *rev, const char *cp, int is_tformat)
28{
29 free(user_format);
30 user_format = xstrdup(cp);
31 if (is_tformat)
32 rev->use_terminator = 1;
33 rev->commit_format = CMIT_FMT_USERFORMAT;
34}
35
36static int git_pretty_formats_config(const char *var, const char *value, void *cb)
37{
38 struct cmt_fmt_map *commit_format = NULL;
39 const char *name;
40 const char *fmt;
41 int i;
42
43 if (prefixcmp(var, "pretty."))
44 return 0;
45
46 name = var + strlen("pretty.");
47 for (i = 0; i < builtin_formats_len; i++) {
48 if (!strcmp(commit_formats[i].name, name))
49 return 0;
50 }
51
52 for (i = builtin_formats_len; i < commit_formats_len; i++) {
53 if (!strcmp(commit_formats[i].name, name)) {
54 commit_format = &commit_formats[i];
55 break;
56 }
57 }
58
59 if (!commit_format) {
60 ALLOC_GROW(commit_formats, commit_formats_len+1,
61 commit_formats_alloc);
62 commit_format = &commit_formats[commit_formats_len];
63 memset(commit_format, 0, sizeof(*commit_format));
64 commit_formats_len++;
65 }
66
67 commit_format->name = xstrdup(name);
68 commit_format->format = CMIT_FMT_USERFORMAT;
69 git_config_string(&fmt, var, value);
70 if (!prefixcmp(fmt, "format:") || !prefixcmp(fmt, "tformat:")) {
71 commit_format->is_tformat = fmt[0] == 't';
72 fmt = strchr(fmt, ':') + 1;
73 } else if (strchr(fmt, '%'))
74 commit_format->is_tformat = 1;
75 else
76 commit_format->is_alias = 1;
77 commit_format->user_format = fmt;
78
79 return 0;
80}
81
82static void setup_commit_formats(void)
83{
84 struct cmt_fmt_map builtin_formats[] = {
85 { "raw", CMIT_FMT_RAW, 0 },
86 { "medium", CMIT_FMT_MEDIUM, 0 },
87 { "short", CMIT_FMT_SHORT, 0 },
88 { "email", CMIT_FMT_EMAIL, 0 },
89 { "fuller", CMIT_FMT_FULLER, 0 },
90 { "full", CMIT_FMT_FULL, 0 },
91 { "oneline", CMIT_FMT_ONELINE, 1 }
92 };
93 commit_formats_len = ARRAY_SIZE(builtin_formats);
94 builtin_formats_len = commit_formats_len;
95 ALLOC_GROW(commit_formats, commit_formats_len, commit_formats_alloc);
96 memcpy(commit_formats, builtin_formats,
97 sizeof(*builtin_formats)*ARRAY_SIZE(builtin_formats));
98
99 git_config(git_pretty_formats_config, NULL);
100}
101
102static struct cmt_fmt_map *find_commit_format_recursive(const char *sought,
103 const char *original,
104 int num_redirections)
105{
106 struct cmt_fmt_map *found = NULL;
107 size_t found_match_len = 0;
108 int i;
109
110 if (num_redirections >= commit_formats_len)
111 die("invalid --pretty format: "
112 "'%s' references an alias which points to itself",
113 original);
114
115 for (i = 0; i < commit_formats_len; i++) {
116 size_t match_len;
117
118 if (prefixcmp(commit_formats[i].name, sought))
119 continue;
120
121 match_len = strlen(commit_formats[i].name);
122 if (found == NULL || found_match_len > match_len) {
123 found = &commit_formats[i];
124 found_match_len = match_len;
125 }
126 }
127
128 if (found && found->is_alias) {
129 found = find_commit_format_recursive(found->user_format,
130 original,
131 num_redirections+1);
132 }
133
134 return found;
135}
136
137static struct cmt_fmt_map *find_commit_format(const char *sought)
138{
139 if (!commit_formats)
140 setup_commit_formats();
141
142 return find_commit_format_recursive(sought, sought, 0);
143}
144
145void get_commit_format(const char *arg, struct rev_info *rev)
146{
147 struct cmt_fmt_map *commit_format;
148
149 rev->use_terminator = 0;
150 if (!arg || !*arg) {
151 rev->commit_format = CMIT_FMT_DEFAULT;
152 return;
153 }
154 if (!prefixcmp(arg, "format:") || !prefixcmp(arg, "tformat:")) {
155 save_user_format(rev, strchr(arg, ':') + 1, arg[0] == 't');
156 return;
157 }
158
159 if (strchr(arg, '%')) {
160 save_user_format(rev, arg, 1);
161 return;
162 }
163
164 commit_format = find_commit_format(arg);
165 if (!commit_format)
166 die("invalid --pretty format: %s", arg);
167
168 rev->commit_format = commit_format->format;
169 rev->use_terminator = commit_format->is_tformat;
170 if (commit_format->format == CMIT_FMT_USERFORMAT) {
171 save_user_format(rev, commit_format->user_format,
172 commit_format->is_tformat);
173 }
174}
175
176/*
177 * Generic support for pretty-printing the header
178 */
179static int get_one_line(const char *msg)
180{
181 int ret = 0;
182
183 for (;;) {
184 char c = *msg++;
185 if (!c)
186 break;
187 ret++;
188 if (c == '\n')
189 break;
190 }
191 return ret;
192}
193
194/* High bit set, or ISO-2022-INT */
195static int non_ascii(int ch)
196{
197 return !isascii(ch) || ch == '\033';
198}
199
200int has_non_ascii(const char *s)
201{
202 int ch;
203 if (!s)
204 return 0;
205 while ((ch = *s++) != '\0') {
206 if (non_ascii(ch))
207 return 1;
208 }
209 return 0;
210}
211
212static int is_rfc822_special(char ch)
213{
214 switch (ch) {
215 case '(':
216 case ')':
217 case '<':
218 case '>':
219 case '[':
220 case ']':
221 case ':':
222 case ';':
223 case '@':
224 case ',':
225 case '.':
226 case '"':
227 case '\\':
228 return 1;
229 default:
230 return 0;
231 }
232}
233
234static int needs_rfc822_quoting(const char *s, int len)
235{
236 int i;
237 for (i = 0; i < len; i++)
238 if (is_rfc822_special(s[i]))
239 return 1;
240 return 0;
241}
242
243static int last_line_length(struct strbuf *sb)
244{
245 int i;
246
247 /* How many bytes are already used on the last line? */
248 for (i = sb->len - 1; i >= 0; i--)
249 if (sb->buf[i] == '\n')
250 break;
251 return sb->len - (i + 1);
252}
253
254static void add_rfc822_quoted(struct strbuf *out, const char *s, int len)
255{
256 int i;
257
258 /* just a guess, we may have to also backslash-quote */
259 strbuf_grow(out, len + 2);
260
261 strbuf_addch(out, '"');
262 for (i = 0; i < len; i++) {
263 switch (s[i]) {
264 case '"':
265 case '\\':
266 strbuf_addch(out, '\\');
267 /* fall through */
268 default:
269 strbuf_addch(out, s[i]);
270 }
271 }
272 strbuf_addch(out, '"');
273}
274
275enum rfc2047_type {
276 RFC2047_SUBJECT,
277 RFC2047_ADDRESS,
278};
279
280static int is_rfc2047_special(char ch, enum rfc2047_type type)
281{
282 /*
283 * rfc2047, section 4.2:
284 *
285 * 8-bit values which correspond to printable ASCII characters other
286 * than "=", "?", and "_" (underscore), MAY be represented as those
287 * characters. (But see section 5 for restrictions.) In
288 * particular, SPACE and TAB MUST NOT be represented as themselves
289 * within encoded words.
290 */
291
292 /*
293 * rule out non-ASCII characters and non-printable characters (the
294 * non-ASCII check should be redundant as isprint() is not localized
295 * and only knows about ASCII, but be defensive about that)
296 */
297 if (non_ascii(ch) || !isprint(ch))
298 return 1;
299
300 /*
301 * rule out special printable characters (' ' should be the only
302 * whitespace character considered printable, but be defensive and use
303 * isspace())
304 */
305 if (isspace(ch) || ch == '=' || ch == '?' || ch == '_')
306 return 1;
307
308 /*
309 * rfc2047, section 5.3:
310 *
311 * As a replacement for a 'word' entity within a 'phrase', for example,
312 * one that precedes an address in a From, To, or Cc header. The ABNF
313 * definition for 'phrase' from RFC 822 thus becomes:
314 *
315 * phrase = 1*( encoded-word / word )
316 *
317 * In this case the set of characters that may be used in a "Q"-encoded
318 * 'encoded-word' is restricted to: <upper and lower case ASCII
319 * letters, decimal digits, "!", "*", "+", "-", "/", "=", and "_"
320 * (underscore, ASCII 95.)>. An 'encoded-word' that appears within a
321 * 'phrase' MUST be separated from any adjacent 'word', 'text' or
322 * 'special' by 'linear-white-space'.
323 */
324
325 if (type != RFC2047_ADDRESS)
326 return 0;
327
328 /* '=' and '_' are special cases and have been checked above */
329 return !(isalnum(ch) || ch == '!' || ch == '*' || ch == '+' || ch == '-' || ch == '/');
330}
331
332static int needs_rfc2047_encoding(const char *line, int len,
333 enum rfc2047_type type)
334{
335 int i;
336
337 for (i = 0; i < len; i++) {
338 int ch = line[i];
339 if (non_ascii(ch) || ch == '\n')
340 return 1;
341 if ((i + 1 < len) && (ch == '=' && line[i+1] == '?'))
342 return 1;
343 }
344
345 return 0;
346}
347
348static void add_rfc2047(struct strbuf *sb, const char *line, size_t len,
349 const char *encoding, enum rfc2047_type type)
350{
351 static const int max_encoded_length = 76; /* per rfc2047 */
352 int i;
353 int line_len = last_line_length(sb);
354
355 strbuf_grow(sb, len * 3 + strlen(encoding) + 100);
356 strbuf_addf(sb, "=?%s?q?", encoding);
357 line_len += strlen(encoding) + 5; /* 5 for =??q? */
358
359 while (len) {
360 /*
361 * RFC 2047, section 5 (3):
362 *
363 * Each 'encoded-word' MUST represent an integral number of
364 * characters. A multi-octet character may not be split across
365 * adjacent 'encoded- word's.
366 */
367 const unsigned char *p = (const unsigned char *)line;
368 int chrlen = mbs_chrlen(&line, &len, encoding);
369 int is_special = (chrlen > 1) || is_rfc2047_special(*p, type);
370
371 /* "=%02X" * chrlen, or the byte itself */
372 const char *encoded_fmt = is_special ? "=%02X" : "%c";
373 int encoded_len = is_special ? 3 * chrlen : 1;
374
375 /*
376 * According to RFC 2047, we could encode the special character
377 * ' ' (space) with '_' (underscore) for readability. But many
378 * programs do not understand this and just leave the
379 * underscore in place. Thus, we do nothing special here, which
380 * causes ' ' to be encoded as '=20', avoiding this problem.
381 */
382
383 if (line_len + encoded_len + 2 > max_encoded_length) {
384 /* It won't fit with trailing "?=" --- break the line */
385 strbuf_addf(sb, "?=\n =?%s?q?", encoding);
386 line_len = strlen(encoding) + 5 + 1; /* =??q? plus SP */
387 }
388
389 for (i = 0; i < chrlen; i++)
390 strbuf_addf(sb, encoded_fmt, p[i]);
391 line_len += encoded_len;
392 }
393 strbuf_addstr(sb, "?=");
394}
395
396static const char *show_ident_date(const struct ident_split *ident,
397 enum date_mode mode)
398{
399 unsigned long date = 0;
400 int tz = 0;
401
402 if (ident->date_begin && ident->date_end)
403 date = strtoul(ident->date_begin, NULL, 10);
404 if (ident->tz_begin && ident->tz_end)
405 tz = strtol(ident->tz_begin, NULL, 10);
406 return show_date(date, tz, mode);
407}
408
409void pp_user_info(const struct pretty_print_context *pp,
410 const char *what, struct strbuf *sb,
411 const char *line, const char *encoding)
412{
413 struct ident_split ident;
414 char *line_end;
415 const char *mailbuf, *namebuf;
416 size_t namelen, maillen;
417 int max_length = 78; /* per rfc2822 */
418
419 if (pp->fmt == CMIT_FMT_ONELINE)
420 return;
421
422 line_end = strchrnul(line, '\n');
423 if (split_ident_line(&ident, line, line_end - line))
424 return;
425
426 mailbuf = ident.mail_begin;
427 maillen = ident.mail_end - ident.mail_begin;
428 namebuf = ident.name_begin;
429 namelen = ident.name_end - ident.name_begin;
430
431 if (pp->mailmap)
432 map_user(pp->mailmap, &mailbuf, &maillen, &namebuf, &namelen);
433
434 if (pp->fmt == CMIT_FMT_EMAIL) {
435 strbuf_addstr(sb, "From: ");
436 if (needs_rfc2047_encoding(namebuf, namelen, RFC2047_ADDRESS)) {
437 add_rfc2047(sb, namebuf, namelen,
438 encoding, RFC2047_ADDRESS);
439 max_length = 76; /* per rfc2047 */
440 } else if (needs_rfc822_quoting(namebuf, namelen)) {
441 struct strbuf quoted = STRBUF_INIT;
442 add_rfc822_quoted("ed, namebuf, namelen);
443 strbuf_add_wrapped_bytes(sb, quoted.buf, quoted.len,
444 -6, 1, max_length);
445 strbuf_release("ed);
446 } else {
447 strbuf_add_wrapped_bytes(sb, namebuf, namelen,
448 -6, 1, max_length);
449 }
450
451 if (max_length <
452 last_line_length(sb) + strlen(" <") + maillen + strlen(">"))
453 strbuf_addch(sb, '\n');
454 strbuf_addf(sb, " <%.*s>\n", (int)maillen, mailbuf);
455 } else {
456 strbuf_addf(sb, "%s: %.*s%.*s <%.*s>\n", what,
457 (pp->fmt == CMIT_FMT_FULLER) ? 4 : 0, " ",
458 (int)namelen, namebuf, (int)maillen, mailbuf);
459 }
460
461 switch (pp->fmt) {
462 case CMIT_FMT_MEDIUM:
463 strbuf_addf(sb, "Date: %s\n",
464 show_ident_date(&ident, pp->date_mode));
465 break;
466 case CMIT_FMT_EMAIL:
467 strbuf_addf(sb, "Date: %s\n",
468 show_ident_date(&ident, DATE_RFC2822));
469 break;
470 case CMIT_FMT_FULLER:
471 strbuf_addf(sb, "%sDate: %s\n", what,
472 show_ident_date(&ident, pp->date_mode));
473 break;
474 default:
475 /* notin' */
476 break;
477 }
478}
479
480static int is_empty_line(const char *line, int *len_p)
481{
482 int len = *len_p;
483 while (len && isspace(line[len-1]))
484 len--;
485 *len_p = len;
486 return !len;
487}
488
489static const char *skip_empty_lines(const char *msg)
490{
491 for (;;) {
492 int linelen = get_one_line(msg);
493 int ll = linelen;
494 if (!linelen)
495 break;
496 if (!is_empty_line(msg, &ll))
497 break;
498 msg += linelen;
499 }
500 return msg;
501}
502
503static void add_merge_info(const struct pretty_print_context *pp,
504 struct strbuf *sb, const struct commit *commit)
505{
506 struct commit_list *parent = commit->parents;
507
508 if ((pp->fmt == CMIT_FMT_ONELINE) || (pp->fmt == CMIT_FMT_EMAIL) ||
509 !parent || !parent->next)
510 return;
511
512 strbuf_addstr(sb, "Merge:");
513
514 while (parent) {
515 struct commit *p = parent->item;
516 const char *hex = NULL;
517 if (pp->abbrev)
518 hex = find_unique_abbrev(p->object.sha1, pp->abbrev);
519 if (!hex)
520 hex = sha1_to_hex(p->object.sha1);
521 parent = parent->next;
522
523 strbuf_addf(sb, " %s", hex);
524 }
525 strbuf_addch(sb, '\n');
526}
527
528static char *get_header(const struct commit *commit, const char *msg,
529 const char *key)
530{
531 int key_len = strlen(key);
532 const char *line = msg;
533
534 while (line) {
535 const char *eol = strchr(line, '\n'), *next;
536
537 if (line == eol)
538 return NULL;
539 if (!eol) {
540 warning("malformed commit (header is missing newline): %s",
541 sha1_to_hex(commit->object.sha1));
542 eol = line + strlen(line);
543 next = NULL;
544 } else
545 next = eol + 1;
546 if (eol - line > key_len &&
547 !strncmp(line, key, key_len) &&
548 line[key_len] == ' ') {
549 return xmemdupz(line + key_len + 1, eol - line - key_len - 1);
550 }
551 line = next;
552 }
553 return NULL;
554}
555
556static char *replace_encoding_header(char *buf, const char *encoding)
557{
558 struct strbuf tmp = STRBUF_INIT;
559 size_t start, len;
560 char *cp = buf;
561
562 /* guess if there is an encoding header before a \n\n */
563 while (strncmp(cp, "encoding ", strlen("encoding "))) {
564 cp = strchr(cp, '\n');
565 if (!cp || *++cp == '\n')
566 return buf;
567 }
568 start = cp - buf;
569 cp = strchr(cp, '\n');
570 if (!cp)
571 return buf; /* should not happen but be defensive */
572 len = cp + 1 - (buf + start);
573
574 strbuf_attach(&tmp, buf, strlen(buf), strlen(buf) + 1);
575 if (is_encoding_utf8(encoding)) {
576 /* we have re-coded to UTF-8; drop the header */
577 strbuf_remove(&tmp, start, len);
578 } else {
579 /* just replaces XXXX in 'encoding XXXX\n' */
580 strbuf_splice(&tmp, start + strlen("encoding "),
581 len - strlen("encoding \n"),
582 encoding, strlen(encoding));
583 }
584 return strbuf_detach(&tmp, NULL);
585}
586
587char *logmsg_reencode(const struct commit *commit,
588 const char *output_encoding)
589{
590 static const char *utf8 = "UTF-8";
591 const char *use_encoding;
592 char *encoding;
593 char *msg = commit->buffer;
594 char *out;
595
596 if (!msg) {
597 enum object_type type;
598 unsigned long size;
599
600 msg = read_sha1_file(commit->object.sha1, &type, &size);
601 if (!msg)
602 die("Cannot read commit object %s",
603 sha1_to_hex(commit->object.sha1));
604 if (type != OBJ_COMMIT)
605 die("Expected commit for '%s', got %s",
606 sha1_to_hex(commit->object.sha1), typename(type));
607 }
608
609 if (!output_encoding || !*output_encoding)
610 return msg;
611 encoding = get_header(commit, msg, "encoding");
612 use_encoding = encoding ? encoding : utf8;
613 if (same_encoding(use_encoding, output_encoding)) {
614 /*
615 * No encoding work to be done. If we have no encoding header
616 * at all, then there's nothing to do, and we can return the
617 * message verbatim (whether newly allocated or not).
618 */
619 if (!encoding)
620 return msg;
621
622 /*
623 * Otherwise, we still want to munge the encoding header in the
624 * result, which will be done by modifying the buffer. If we
625 * are using a fresh copy, we can reuse it. But if we are using
626 * the cached copy from commit->buffer, we need to duplicate it
627 * to avoid munging commit->buffer.
628 */
629 out = msg;
630 if (out == commit->buffer)
631 out = xstrdup(out);
632 }
633 else {
634 /*
635 * There's actual encoding work to do. Do the reencoding, which
636 * still leaves the header to be replaced in the next step. At
637 * this point, we are done with msg. If we allocated a fresh
638 * copy, we can free it.
639 */
640 out = reencode_string(msg, output_encoding, use_encoding);
641 if (out && msg != commit->buffer)
642 free(msg);
643 }
644
645 /*
646 * This replacement actually consumes the buffer we hand it, so we do
647 * not have to worry about freeing the old "out" here.
648 */
649 if (out)
650 out = replace_encoding_header(out, output_encoding);
651
652 free(encoding);
653 /*
654 * If the re-encoding failed, out might be NULL here; in that
655 * case we just return the commit message verbatim.
656 */
657 return out ? out : msg;
658}
659
660void logmsg_free(char *msg, const struct commit *commit)
661{
662 if (msg != commit->buffer)
663 free(msg);
664}
665
666static int mailmap_name(const char **email, size_t *email_len,
667 const char **name, size_t *name_len)
668{
669 static struct string_list *mail_map;
670 if (!mail_map) {
671 mail_map = xcalloc(1, sizeof(*mail_map));
672 read_mailmap(mail_map, NULL);
673 }
674 return mail_map->nr && map_user(mail_map, email, email_len, name, name_len);
675}
676
677static size_t format_person_part(struct strbuf *sb, char part,
678 const char *msg, int len, enum date_mode dmode)
679{
680 /* currently all placeholders have same length */
681 const int placeholder_len = 2;
682 struct ident_split s;
683 const char *name, *mail;
684 size_t maillen, namelen;
685
686 if (split_ident_line(&s, msg, len) < 0)
687 goto skip;
688
689 name = s.name_begin;
690 namelen = s.name_end - s.name_begin;
691 mail = s.mail_begin;
692 maillen = s.mail_end - s.mail_begin;
693
694 if (part == 'N' || part == 'E') /* mailmap lookup */
695 mailmap_name(&mail, &maillen, &name, &namelen);
696 if (part == 'n' || part == 'N') { /* name */
697 strbuf_add(sb, name, namelen);
698 return placeholder_len;
699 }
700 if (part == 'e' || part == 'E') { /* email */
701 strbuf_add(sb, mail, maillen);
702 return placeholder_len;
703 }
704
705 if (!s.date_begin)
706 goto skip;
707
708 if (part == 't') { /* date, UNIX timestamp */
709 strbuf_add(sb, s.date_begin, s.date_end - s.date_begin);
710 return placeholder_len;
711 }
712
713 switch (part) {
714 case 'd': /* date */
715 strbuf_addstr(sb, show_ident_date(&s, dmode));
716 return placeholder_len;
717 case 'D': /* date, RFC2822 style */
718 strbuf_addstr(sb, show_ident_date(&s, DATE_RFC2822));
719 return placeholder_len;
720 case 'r': /* date, relative */
721 strbuf_addstr(sb, show_ident_date(&s, DATE_RELATIVE));
722 return placeholder_len;
723 case 'i': /* date, ISO 8601 */
724 strbuf_addstr(sb, show_ident_date(&s, DATE_ISO8601));
725 return placeholder_len;
726 }
727
728skip:
729 /*
730 * reading from either a bogus commit, or a reflog entry with
731 * %gn, %ge, etc.; 'sb' cannot be updated, but we still need
732 * to compute a valid return value.
733 */
734 if (part == 'n' || part == 'e' || part == 't' || part == 'd'
735 || part == 'D' || part == 'r' || part == 'i')
736 return placeholder_len;
737
738 return 0; /* unknown placeholder */
739}
740
741struct chunk {
742 size_t off;
743 size_t len;
744};
745
746struct format_commit_context {
747 const struct commit *commit;
748 const struct pretty_print_context *pretty_ctx;
749 unsigned commit_header_parsed:1;
750 unsigned commit_message_parsed:1;
751 unsigned commit_signature_parsed:1;
752 struct {
753 char *gpg_output;
754 char *gpg_status;
755 char good_bad;
756 char *signer;
757 char *key;
758 } signature;
759 char *message;
760 size_t width, indent1, indent2;
761
762 /* These offsets are relative to the start of the commit message. */
763 struct chunk author;
764 struct chunk committer;
765 struct chunk encoding;
766 size_t message_off;
767 size_t subject_off;
768 size_t body_off;
769
770 /* The following ones are relative to the result struct strbuf. */
771 struct chunk abbrev_commit_hash;
772 struct chunk abbrev_tree_hash;
773 struct chunk abbrev_parent_hashes;
774 size_t wrap_start;
775};
776
777static int add_again(struct strbuf *sb, struct chunk *chunk)
778{
779 if (chunk->len) {
780 strbuf_adddup(sb, chunk->off, chunk->len);
781 return 1;
782 }
783
784 /*
785 * We haven't seen this chunk before. Our caller is surely
786 * going to add it the hard way now. Remember the most likely
787 * start of the to-be-added chunk: the current end of the
788 * struct strbuf.
789 */
790 chunk->off = sb->len;
791 return 0;
792}
793
794static void parse_commit_header(struct format_commit_context *context)
795{
796 const char *msg = context->message;
797 int i;
798
799 for (i = 0; msg[i]; i++) {
800 int eol;
801 for (eol = i; msg[eol] && msg[eol] != '\n'; eol++)
802 ; /* do nothing */
803
804 if (i == eol) {
805 break;
806 } else if (!prefixcmp(msg + i, "author ")) {
807 context->author.off = i + 7;
808 context->author.len = eol - i - 7;
809 } else if (!prefixcmp(msg + i, "committer ")) {
810 context->committer.off = i + 10;
811 context->committer.len = eol - i - 10;
812 } else if (!prefixcmp(msg + i, "encoding ")) {
813 context->encoding.off = i + 9;
814 context->encoding.len = eol - i - 9;
815 }
816 i = eol;
817 }
818 context->message_off = i;
819 context->commit_header_parsed = 1;
820}
821
822static int istitlechar(char c)
823{
824 return (c >= 'a' && c <= 'z') || (c >= 'A' && c <= 'Z') ||
825 (c >= '0' && c <= '9') || c == '.' || c == '_';
826}
827
828static void format_sanitized_subject(struct strbuf *sb, const char *msg)
829{
830 size_t trimlen;
831 size_t start_len = sb->len;
832 int space = 2;
833
834 for (; *msg && *msg != '\n'; msg++) {
835 if (istitlechar(*msg)) {
836 if (space == 1)
837 strbuf_addch(sb, '-');
838 space = 0;
839 strbuf_addch(sb, *msg);
840 if (*msg == '.')
841 while (*(msg+1) == '.')
842 msg++;
843 } else
844 space |= 1;
845 }
846
847 /* trim any trailing '.' or '-' characters */
848 trimlen = 0;
849 while (sb->len - trimlen > start_len &&
850 (sb->buf[sb->len - 1 - trimlen] == '.'
851 || sb->buf[sb->len - 1 - trimlen] == '-'))
852 trimlen++;
853 strbuf_remove(sb, sb->len - trimlen, trimlen);
854}
855
856const char *format_subject(struct strbuf *sb, const char *msg,
857 const char *line_separator)
858{
859 int first = 1;
860
861 for (;;) {
862 const char *line = msg;
863 int linelen = get_one_line(line);
864
865 msg += linelen;
866 if (!linelen || is_empty_line(line, &linelen))
867 break;
868
869 if (!sb)
870 continue;
871 strbuf_grow(sb, linelen + 2);
872 if (!first)
873 strbuf_addstr(sb, line_separator);
874 strbuf_add(sb, line, linelen);
875 first = 0;
876 }
877 return msg;
878}
879
880static void parse_commit_message(struct format_commit_context *c)
881{
882 const char *msg = c->message + c->message_off;
883 const char *start = c->message;
884
885 msg = skip_empty_lines(msg);
886 c->subject_off = msg - start;
887
888 msg = format_subject(NULL, msg, NULL);
889 msg = skip_empty_lines(msg);
890 c->body_off = msg - start;
891
892 c->commit_message_parsed = 1;
893}
894
895static void format_decoration(struct strbuf *sb, const struct commit *commit)
896{
897 struct name_decoration *d;
898 const char *prefix = " (";
899
900 load_ref_decorations(DECORATE_SHORT_REFS);
901 d = lookup_decoration(&name_decoration, &commit->object);
902 while (d) {
903 strbuf_addstr(sb, prefix);
904 prefix = ", ";
905 strbuf_addstr(sb, d->name);
906 d = d->next;
907 }
908 if (prefix[0] == ',')
909 strbuf_addch(sb, ')');
910}
911
912static void strbuf_wrap(struct strbuf *sb, size_t pos,
913 size_t width, size_t indent1, size_t indent2)
914{
915 struct strbuf tmp = STRBUF_INIT;
916
917 if (pos)
918 strbuf_add(&tmp, sb->buf, pos);
919 strbuf_add_wrapped_text(&tmp, sb->buf + pos,
920 (int) indent1, (int) indent2, (int) width);
921 strbuf_swap(&tmp, sb);
922 strbuf_release(&tmp);
923}
924
925static void rewrap_message_tail(struct strbuf *sb,
926 struct format_commit_context *c,
927 size_t new_width, size_t new_indent1,
928 size_t new_indent2)
929{
930 if (c->width == new_width && c->indent1 == new_indent1 &&
931 c->indent2 == new_indent2)
932 return;
933 if (c->wrap_start < sb->len)
934 strbuf_wrap(sb, c->wrap_start, c->width, c->indent1, c->indent2);
935 c->wrap_start = sb->len;
936 c->width = new_width;
937 c->indent1 = new_indent1;
938 c->indent2 = new_indent2;
939}
940
941static struct {
942 char result;
943 const char *check;
944} signature_check[] = {
945 { 'G', "\n[GNUPG:] GOODSIG " },
946 { 'B', "\n[GNUPG:] BADSIG " },
947};
948
949static void parse_signature_lines(struct format_commit_context *ctx)
950{
951 const char *buf = ctx->signature.gpg_status;
952 int i;
953
954 for (i = 0; i < ARRAY_SIZE(signature_check); i++) {
955 const char *found = strstr(buf, signature_check[i].check);
956 const char *next;
957 if (!found)
958 continue;
959 ctx->signature.good_bad = signature_check[i].result;
960 found += strlen(signature_check[i].check);
961 ctx->signature.key = xmemdupz(found, 16);
962 found += 17;
963 next = strchrnul(found, '\n');
964 ctx->signature.signer = xmemdupz(found, next - found);
965 break;
966 }
967}
968
969static void parse_commit_signature(struct format_commit_context *ctx)
970{
971 struct strbuf payload = STRBUF_INIT;
972 struct strbuf signature = STRBUF_INIT;
973 struct strbuf gpg_output = STRBUF_INIT;
974 struct strbuf gpg_status = STRBUF_INIT;
975 int status;
976
977 ctx->commit_signature_parsed = 1;
978
979 if (parse_signed_commit(ctx->commit->object.sha1,
980 &payload, &signature) <= 0)
981 goto out;
982 status = verify_signed_buffer(payload.buf, payload.len,
983 signature.buf, signature.len,
984 &gpg_output, &gpg_status);
985 if (status && !gpg_output.len)
986 goto out;
987 ctx->signature.gpg_output = strbuf_detach(&gpg_output, NULL);
988 ctx->signature.gpg_status = strbuf_detach(&gpg_status, NULL);
989 parse_signature_lines(ctx);
990
991 out:
992 strbuf_release(&gpg_status);
993 strbuf_release(&gpg_output);
994 strbuf_release(&payload);
995 strbuf_release(&signature);
996}
997
998
999static int format_reflog_person(struct strbuf *sb,
1000 char part,
1001 struct reflog_walk_info *log,
1002 enum date_mode dmode)
1003{
1004 const char *ident;
1005
1006 if (!log)
1007 return 2;
1008
1009 ident = get_reflog_ident(log);
1010 if (!ident)
1011 return 2;
1012
1013 return format_person_part(sb, part, ident, strlen(ident), dmode);
1014}
1015
1016static size_t format_commit_one(struct strbuf *sb, const char *placeholder,
1017 void *context)
1018{
1019 struct format_commit_context *c = context;
1020 const struct commit *commit = c->commit;
1021 const char *msg = c->message;
1022 struct commit_list *p;
1023 int h1, h2;
1024
1025 /* these are independent of the commit */
1026 switch (placeholder[0]) {
1027 case 'C':
1028 if (placeholder[1] == '(') {
1029 const char *begin = placeholder + 2;
1030 const char *end = strchr(begin, ')');
1031 char color[COLOR_MAXLEN];
1032
1033 if (!end)
1034 return 0;
1035 if (!prefixcmp(begin, "auto,")) {
1036 if (!want_color(c->pretty_ctx->color))
1037 return end - placeholder + 1;
1038 begin += 5;
1039 }
1040 color_parse_mem(begin,
1041 end - begin,
1042 "--pretty format", color);
1043 strbuf_addstr(sb, color);
1044 return end - placeholder + 1;
1045 }
1046 if (!prefixcmp(placeholder + 1, "red")) {
1047 strbuf_addstr(sb, GIT_COLOR_RED);
1048 return 4;
1049 } else if (!prefixcmp(placeholder + 1, "green")) {
1050 strbuf_addstr(sb, GIT_COLOR_GREEN);
1051 return 6;
1052 } else if (!prefixcmp(placeholder + 1, "blue")) {
1053 strbuf_addstr(sb, GIT_COLOR_BLUE);
1054 return 5;
1055 } else if (!prefixcmp(placeholder + 1, "reset")) {
1056 strbuf_addstr(sb, GIT_COLOR_RESET);
1057 return 6;
1058 } else
1059 return 0;
1060 case 'n': /* newline */
1061 strbuf_addch(sb, '\n');
1062 return 1;
1063 case 'x':
1064 /* %x00 == NUL, %x0a == LF, etc. */
1065 if (0 <= (h1 = hexval_table[0xff & placeholder[1]]) &&
1066 h1 <= 16 &&
1067 0 <= (h2 = hexval_table[0xff & placeholder[2]]) &&
1068 h2 <= 16) {
1069 strbuf_addch(sb, (h1<<4)|h2);
1070 return 3;
1071 } else
1072 return 0;
1073 case 'w':
1074 if (placeholder[1] == '(') {
1075 unsigned long width = 0, indent1 = 0, indent2 = 0;
1076 char *next;
1077 const char *start = placeholder + 2;
1078 const char *end = strchr(start, ')');
1079 if (!end)
1080 return 0;
1081 if (end > start) {
1082 width = strtoul(start, &next, 10);
1083 if (*next == ',') {
1084 indent1 = strtoul(next + 1, &next, 10);
1085 if (*next == ',') {
1086 indent2 = strtoul(next + 1,
1087 &next, 10);
1088 }
1089 }
1090 if (*next != ')')
1091 return 0;
1092 }
1093 rewrap_message_tail(sb, c, width, indent1, indent2);
1094 return end - placeholder + 1;
1095 } else
1096 return 0;
1097 }
1098
1099 /* these depend on the commit */
1100 if (!commit->object.parsed)
1101 parse_object(commit->object.sha1);
1102
1103 switch (placeholder[0]) {
1104 case 'H': /* commit hash */
1105 strbuf_addstr(sb, sha1_to_hex(commit->object.sha1));
1106 return 1;
1107 case 'h': /* abbreviated commit hash */
1108 if (add_again(sb, &c->abbrev_commit_hash))
1109 return 1;
1110 strbuf_addstr(sb, find_unique_abbrev(commit->object.sha1,
1111 c->pretty_ctx->abbrev));
1112 c->abbrev_commit_hash.len = sb->len - c->abbrev_commit_hash.off;
1113 return 1;
1114 case 'T': /* tree hash */
1115 strbuf_addstr(sb, sha1_to_hex(commit->tree->object.sha1));
1116 return 1;
1117 case 't': /* abbreviated tree hash */
1118 if (add_again(sb, &c->abbrev_tree_hash))
1119 return 1;
1120 strbuf_addstr(sb, find_unique_abbrev(commit->tree->object.sha1,
1121 c->pretty_ctx->abbrev));
1122 c->abbrev_tree_hash.len = sb->len - c->abbrev_tree_hash.off;
1123 return 1;
1124 case 'P': /* parent hashes */
1125 for (p = commit->parents; p; p = p->next) {
1126 if (p != commit->parents)
1127 strbuf_addch(sb, ' ');
1128 strbuf_addstr(sb, sha1_to_hex(p->item->object.sha1));
1129 }
1130 return 1;
1131 case 'p': /* abbreviated parent hashes */
1132 if (add_again(sb, &c->abbrev_parent_hashes))
1133 return 1;
1134 for (p = commit->parents; p; p = p->next) {
1135 if (p != commit->parents)
1136 strbuf_addch(sb, ' ');
1137 strbuf_addstr(sb, find_unique_abbrev(
1138 p->item->object.sha1,
1139 c->pretty_ctx->abbrev));
1140 }
1141 c->abbrev_parent_hashes.len = sb->len -
1142 c->abbrev_parent_hashes.off;
1143 return 1;
1144 case 'm': /* left/right/bottom */
1145 strbuf_addstr(sb, get_revision_mark(NULL, commit));
1146 return 1;
1147 case 'd':
1148 format_decoration(sb, commit);
1149 return 1;
1150 case 'g': /* reflog info */
1151 switch(placeholder[1]) {
1152 case 'd': /* reflog selector */
1153 case 'D':
1154 if (c->pretty_ctx->reflog_info)
1155 get_reflog_selector(sb,
1156 c->pretty_ctx->reflog_info,
1157 c->pretty_ctx->date_mode,
1158 c->pretty_ctx->date_mode_explicit,
1159 (placeholder[1] == 'd'));
1160 return 2;
1161 case 's': /* reflog message */
1162 if (c->pretty_ctx->reflog_info)
1163 get_reflog_message(sb, c->pretty_ctx->reflog_info);
1164 return 2;
1165 case 'n':
1166 case 'N':
1167 case 'e':
1168 case 'E':
1169 return format_reflog_person(sb,
1170 placeholder[1],
1171 c->pretty_ctx->reflog_info,
1172 c->pretty_ctx->date_mode);
1173 }
1174 return 0; /* unknown %g placeholder */
1175 case 'N':
1176 if (c->pretty_ctx->notes_message) {
1177 strbuf_addstr(sb, c->pretty_ctx->notes_message);
1178 return 1;
1179 }
1180 return 0;
1181 }
1182
1183 if (placeholder[0] == 'G') {
1184 if (!c->commit_signature_parsed)
1185 parse_commit_signature(c);
1186 switch (placeholder[1]) {
1187 case 'G':
1188 if (c->signature.gpg_output)
1189 strbuf_addstr(sb, c->signature.gpg_output);
1190 break;
1191 case '?':
1192 switch (c->signature.good_bad) {
1193 case 'G':
1194 case 'B':
1195 strbuf_addch(sb, c->signature.good_bad);
1196 }
1197 break;
1198 case 'S':
1199 if (c->signature.signer)
1200 strbuf_addstr(sb, c->signature.signer);
1201 break;
1202 case 'K':
1203 if (c->signature.key)
1204 strbuf_addstr(sb, c->signature.key);
1205 break;
1206 }
1207 return 2;
1208 }
1209
1210
1211 /* For the rest we have to parse the commit header. */
1212 if (!c->commit_header_parsed)
1213 parse_commit_header(c);
1214
1215 switch (placeholder[0]) {
1216 case 'a': /* author ... */
1217 return format_person_part(sb, placeholder[1],
1218 msg + c->author.off, c->author.len,
1219 c->pretty_ctx->date_mode);
1220 case 'c': /* committer ... */
1221 return format_person_part(sb, placeholder[1],
1222 msg + c->committer.off, c->committer.len,
1223 c->pretty_ctx->date_mode);
1224 case 'e': /* encoding */
1225 strbuf_add(sb, msg + c->encoding.off, c->encoding.len);
1226 return 1;
1227 case 'B': /* raw body */
1228 /* message_off is always left at the initial newline */
1229 strbuf_addstr(sb, msg + c->message_off + 1);
1230 return 1;
1231 }
1232
1233 /* Now we need to parse the commit message. */
1234 if (!c->commit_message_parsed)
1235 parse_commit_message(c);
1236
1237 switch (placeholder[0]) {
1238 case 's': /* subject */
1239 format_subject(sb, msg + c->subject_off, " ");
1240 return 1;
1241 case 'f': /* sanitized subject */
1242 format_sanitized_subject(sb, msg + c->subject_off);
1243 return 1;
1244 case 'b': /* body */
1245 strbuf_addstr(sb, msg + c->body_off);
1246 return 1;
1247 }
1248 return 0; /* unknown placeholder */
1249}
1250
1251static size_t format_commit_item(struct strbuf *sb, const char *placeholder,
1252 void *context)
1253{
1254 int consumed;
1255 size_t orig_len;
1256 enum {
1257 NO_MAGIC,
1258 ADD_LF_BEFORE_NON_EMPTY,
1259 DEL_LF_BEFORE_EMPTY,
1260 ADD_SP_BEFORE_NON_EMPTY
1261 } magic = NO_MAGIC;
1262
1263 switch (placeholder[0]) {
1264 case '-':
1265 magic = DEL_LF_BEFORE_EMPTY;
1266 break;
1267 case '+':
1268 magic = ADD_LF_BEFORE_NON_EMPTY;
1269 break;
1270 case ' ':
1271 magic = ADD_SP_BEFORE_NON_EMPTY;
1272 break;
1273 default:
1274 break;
1275 }
1276 if (magic != NO_MAGIC)
1277 placeholder++;
1278
1279 orig_len = sb->len;
1280 consumed = format_commit_one(sb, placeholder, context);
1281 if (magic == NO_MAGIC)
1282 return consumed;
1283
1284 if ((orig_len == sb->len) && magic == DEL_LF_BEFORE_EMPTY) {
1285 while (sb->len && sb->buf[sb->len - 1] == '\n')
1286 strbuf_setlen(sb, sb->len - 1);
1287 } else if (orig_len != sb->len) {
1288 if (magic == ADD_LF_BEFORE_NON_EMPTY)
1289 strbuf_insert(sb, orig_len, "\n", 1);
1290 else if (magic == ADD_SP_BEFORE_NON_EMPTY)
1291 strbuf_insert(sb, orig_len, " ", 1);
1292 }
1293 return consumed + 1;
1294}
1295
1296static size_t userformat_want_item(struct strbuf *sb, const char *placeholder,
1297 void *context)
1298{
1299 struct userformat_want *w = context;
1300
1301 if (*placeholder == '+' || *placeholder == '-' || *placeholder == ' ')
1302 placeholder++;
1303
1304 switch (*placeholder) {
1305 case 'N':
1306 w->notes = 1;
1307 break;
1308 }
1309 return 0;
1310}
1311
1312void userformat_find_requirements(const char *fmt, struct userformat_want *w)
1313{
1314 struct strbuf dummy = STRBUF_INIT;
1315
1316 if (!fmt) {
1317 if (!user_format)
1318 return;
1319 fmt = user_format;
1320 }
1321 strbuf_expand(&dummy, fmt, userformat_want_item, w);
1322 strbuf_release(&dummy);
1323}
1324
1325void format_commit_message(const struct commit *commit,
1326 const char *format, struct strbuf *sb,
1327 const struct pretty_print_context *pretty_ctx)
1328{
1329 struct format_commit_context context;
1330 const char *output_enc = pretty_ctx->output_encoding;
1331
1332 memset(&context, 0, sizeof(context));
1333 context.commit = commit;
1334 context.pretty_ctx = pretty_ctx;
1335 context.wrap_start = sb->len;
1336 context.message = logmsg_reencode(commit, output_enc);
1337
1338 strbuf_expand(sb, format, format_commit_item, &context);
1339 rewrap_message_tail(sb, &context, 0, 0, 0);
1340
1341 logmsg_free(context.message, commit);
1342 free(context.signature.gpg_output);
1343 free(context.signature.signer);
1344}
1345
1346static void pp_header(const struct pretty_print_context *pp,
1347 const char *encoding,
1348 const struct commit *commit,
1349 const char **msg_p,
1350 struct strbuf *sb)
1351{
1352 int parents_shown = 0;
1353
1354 for (;;) {
1355 const char *line = *msg_p;
1356 int linelen = get_one_line(*msg_p);
1357
1358 if (!linelen)
1359 return;
1360 *msg_p += linelen;
1361
1362 if (linelen == 1)
1363 /* End of header */
1364 return;
1365
1366 if (pp->fmt == CMIT_FMT_RAW) {
1367 strbuf_add(sb, line, linelen);
1368 continue;
1369 }
1370
1371 if (!prefixcmp(line, "parent ")) {
1372 if (linelen != 48)
1373 die("bad parent line in commit");
1374 continue;
1375 }
1376
1377 if (!parents_shown) {
1378 struct commit_list *parent;
1379 int num;
1380 for (parent = commit->parents, num = 0;
1381 parent;
1382 parent = parent->next, num++)
1383 ;
1384 /* with enough slop */
1385 strbuf_grow(sb, num * 50 + 20);
1386 add_merge_info(pp, sb, commit);
1387 parents_shown = 1;
1388 }
1389
1390 /*
1391 * MEDIUM == DEFAULT shows only author with dates.
1392 * FULL shows both authors but not dates.
1393 * FULLER shows both authors and dates.
1394 */
1395 if (!prefixcmp(line, "author ")) {
1396 strbuf_grow(sb, linelen + 80);
1397 pp_user_info(pp, "Author", sb, line + 7, encoding);
1398 }
1399 if (!prefixcmp(line, "committer ") &&
1400 (pp->fmt == CMIT_FMT_FULL || pp->fmt == CMIT_FMT_FULLER)) {
1401 strbuf_grow(sb, linelen + 80);
1402 pp_user_info(pp, "Commit", sb, line + 10, encoding);
1403 }
1404 }
1405}
1406
1407void pp_title_line(const struct pretty_print_context *pp,
1408 const char **msg_p,
1409 struct strbuf *sb,
1410 const char *encoding,
1411 int need_8bit_cte)
1412{
1413 static const int max_length = 78; /* per rfc2047 */
1414 struct strbuf title;
1415
1416 strbuf_init(&title, 80);
1417 *msg_p = format_subject(&title, *msg_p,
1418 pp->preserve_subject ? "\n" : " ");
1419
1420 strbuf_grow(sb, title.len + 1024);
1421 if (pp->subject) {
1422 strbuf_addstr(sb, pp->subject);
1423 if (needs_rfc2047_encoding(title.buf, title.len, RFC2047_SUBJECT))
1424 add_rfc2047(sb, title.buf, title.len,
1425 encoding, RFC2047_SUBJECT);
1426 else
1427 strbuf_add_wrapped_bytes(sb, title.buf, title.len,
1428 -last_line_length(sb), 1, max_length);
1429 } else {
1430 strbuf_addbuf(sb, &title);
1431 }
1432 strbuf_addch(sb, '\n');
1433
1434 if (need_8bit_cte > 0) {
1435 const char *header_fmt =
1436 "MIME-Version: 1.0\n"
1437 "Content-Type: text/plain; charset=%s\n"
1438 "Content-Transfer-Encoding: 8bit\n";
1439 strbuf_addf(sb, header_fmt, encoding);
1440 }
1441 if (pp->after_subject) {
1442 strbuf_addstr(sb, pp->after_subject);
1443 }
1444 if (pp->fmt == CMIT_FMT_EMAIL) {
1445 strbuf_addch(sb, '\n');
1446 }
1447 strbuf_release(&title);
1448}
1449
1450void pp_remainder(const struct pretty_print_context *pp,
1451 const char **msg_p,
1452 struct strbuf *sb,
1453 int indent)
1454{
1455 int first = 1;
1456 for (;;) {
1457 const char *line = *msg_p;
1458 int linelen = get_one_line(line);
1459 *msg_p += linelen;
1460
1461 if (!linelen)
1462 break;
1463
1464 if (is_empty_line(line, &linelen)) {
1465 if (first)
1466 continue;
1467 if (pp->fmt == CMIT_FMT_SHORT)
1468 break;
1469 }
1470 first = 0;
1471
1472 strbuf_grow(sb, linelen + indent + 20);
1473 if (indent) {
1474 memset(sb->buf + sb->len, ' ', indent);
1475 strbuf_setlen(sb, sb->len + indent);
1476 }
1477 strbuf_add(sb, line, linelen);
1478 strbuf_addch(sb, '\n');
1479 }
1480}
1481
1482void pretty_print_commit(const struct pretty_print_context *pp,
1483 const struct commit *commit,
1484 struct strbuf *sb)
1485{
1486 unsigned long beginning_of_body;
1487 int indent = 4;
1488 const char *msg;
1489 char *reencoded;
1490 const char *encoding;
1491 int need_8bit_cte = pp->need_8bit_cte;
1492
1493 if (pp->fmt == CMIT_FMT_USERFORMAT) {
1494 format_commit_message(commit, user_format, sb, pp);
1495 return;
1496 }
1497
1498 encoding = get_log_output_encoding();
1499 msg = reencoded = logmsg_reencode(commit, encoding);
1500
1501 if (pp->fmt == CMIT_FMT_ONELINE || pp->fmt == CMIT_FMT_EMAIL)
1502 indent = 0;
1503
1504 /*
1505 * We need to check and emit Content-type: to mark it
1506 * as 8-bit if we haven't done so.
1507 */
1508 if (pp->fmt == CMIT_FMT_EMAIL && need_8bit_cte == 0) {
1509 int i, ch, in_body;
1510
1511 for (in_body = i = 0; (ch = msg[i]); i++) {
1512 if (!in_body) {
1513 /* author could be non 7-bit ASCII but
1514 * the log may be so; skip over the
1515 * header part first.
1516 */
1517 if (ch == '\n' && msg[i+1] == '\n')
1518 in_body = 1;
1519 }
1520 else if (non_ascii(ch)) {
1521 need_8bit_cte = 1;
1522 break;
1523 }
1524 }
1525 }
1526
1527 pp_header(pp, encoding, commit, &msg, sb);
1528 if (pp->fmt != CMIT_FMT_ONELINE && !pp->subject) {
1529 strbuf_addch(sb, '\n');
1530 }
1531
1532 /* Skip excess blank lines at the beginning of body, if any... */
1533 msg = skip_empty_lines(msg);
1534
1535 /* These formats treat the title line specially. */
1536 if (pp->fmt == CMIT_FMT_ONELINE || pp->fmt == CMIT_FMT_EMAIL)
1537 pp_title_line(pp, &msg, sb, encoding, need_8bit_cte);
1538
1539 beginning_of_body = sb->len;
1540 if (pp->fmt != CMIT_FMT_ONELINE)
1541 pp_remainder(pp, &msg, sb, indent);
1542 strbuf_rtrim(sb);
1543
1544 /* Make sure there is an EOLN for the non-oneline case */
1545 if (pp->fmt != CMIT_FMT_ONELINE)
1546 strbuf_addch(sb, '\n');
1547
1548 /*
1549 * The caller may append additional body text in e-mail
1550 * format. Make sure we did not strip the blank line
1551 * between the header and the body.
1552 */
1553 if (pp->fmt == CMIT_FMT_EMAIL && sb->len <= beginning_of_body)
1554 strbuf_addch(sb, '\n');
1555
1556 logmsg_free(reencoded, commit);
1557}
1558
1559void pp_commit_easy(enum cmit_fmt fmt, const struct commit *commit,
1560 struct strbuf *sb)
1561{
1562 struct pretty_print_context pp = {0};
1563 pp.fmt = fmt;
1564 pretty_print_commit(&pp, commit, sb);
1565}