Merge branch 'maint'
[git/gitweb.git] / pretty.c
blob343dca556cc73031bb073b6ebf8bf511db3a60c4
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"
10 static char *user_format;
12 void get_commit_format(const char *arg, struct rev_info *rev)
14 int i;
15 static struct cmt_fmt_map {
16 const char *n;
17 size_t cmp_len;
18 enum cmit_fmt v;
19 } cmt_fmts[] = {
20 { "raw", 1, CMIT_FMT_RAW },
21 { "medium", 1, CMIT_FMT_MEDIUM },
22 { "short", 1, CMIT_FMT_SHORT },
23 { "email", 1, CMIT_FMT_EMAIL },
24 { "full", 5, CMIT_FMT_FULL },
25 { "fuller", 5, CMIT_FMT_FULLER },
26 { "oneline", 1, CMIT_FMT_ONELINE },
29 rev->use_terminator = 0;
30 if (!arg || !*arg) {
31 rev->commit_format = CMIT_FMT_DEFAULT;
32 return;
34 if (!prefixcmp(arg, "format:") || !prefixcmp(arg, "tformat:")) {
35 const char *cp = strchr(arg, ':') + 1;
36 free(user_format);
37 user_format = xstrdup(cp);
38 if (arg[0] == 't')
39 rev->use_terminator = 1;
40 rev->commit_format = CMIT_FMT_USERFORMAT;
41 return;
43 for (i = 0; i < ARRAY_SIZE(cmt_fmts); i++) {
44 if (!strncmp(arg, cmt_fmts[i].n, cmt_fmts[i].cmp_len) &&
45 !strncmp(arg, cmt_fmts[i].n, strlen(arg))) {
46 if (cmt_fmts[i].v == CMIT_FMT_ONELINE)
47 rev->use_terminator = 1;
48 rev->commit_format = cmt_fmts[i].v;
49 return;
53 die("invalid --pretty format: %s", arg);
57 * Generic support for pretty-printing the header
59 static int get_one_line(const char *msg)
61 int ret = 0;
63 for (;;) {
64 char c = *msg++;
65 if (!c)
66 break;
67 ret++;
68 if (c == '\n')
69 break;
71 return ret;
74 /* High bit set, or ISO-2022-INT */
75 int non_ascii(int ch)
77 ch = (ch & 0xff);
78 return ((ch & 0x80) || (ch == 0x1b));
81 static int is_rfc2047_special(char ch)
83 return (non_ascii(ch) || (ch == '=') || (ch == '?') || (ch == '_'));
86 static void add_rfc2047(struct strbuf *sb, const char *line, int len,
87 const char *encoding)
89 int i, last;
91 for (i = 0; i < len; i++) {
92 int ch = line[i];
93 if (non_ascii(ch))
94 goto needquote;
95 if ((i + 1 < len) && (ch == '=' && line[i+1] == '?'))
96 goto needquote;
98 strbuf_add(sb, line, len);
99 return;
101 needquote:
102 strbuf_grow(sb, len * 3 + strlen(encoding) + 100);
103 strbuf_addf(sb, "=?%s?q?", encoding);
104 for (i = last = 0; i < len; i++) {
105 unsigned ch = line[i] & 0xFF;
107 * We encode ' ' using '=20' even though rfc2047
108 * allows using '_' for readability. Unfortunately,
109 * many programs do not understand this and just
110 * leave the underscore in place.
112 if (is_rfc2047_special(ch) || ch == ' ') {
113 strbuf_add(sb, line + last, i - last);
114 strbuf_addf(sb, "=%02X", ch);
115 last = i + 1;
118 strbuf_add(sb, line + last, len - last);
119 strbuf_addstr(sb, "?=");
122 void pp_user_info(const char *what, enum cmit_fmt fmt, struct strbuf *sb,
123 const char *line, enum date_mode dmode,
124 const char *encoding)
126 char *date;
127 int namelen;
128 unsigned long time;
129 int tz;
130 const char *filler = " ";
132 if (fmt == CMIT_FMT_ONELINE)
133 return;
134 date = strchr(line, '>');
135 if (!date)
136 return;
137 namelen = ++date - line;
138 time = strtoul(date, &date, 10);
139 tz = strtol(date, NULL, 10);
141 if (fmt == CMIT_FMT_EMAIL) {
142 char *name_tail = strchr(line, '<');
143 int display_name_length;
144 if (!name_tail)
145 return;
146 while (line < name_tail && isspace(name_tail[-1]))
147 name_tail--;
148 display_name_length = name_tail - line;
149 filler = "";
150 strbuf_addstr(sb, "From: ");
151 add_rfc2047(sb, line, display_name_length, encoding);
152 strbuf_add(sb, name_tail, namelen - display_name_length);
153 strbuf_addch(sb, '\n');
154 } else {
155 strbuf_addf(sb, "%s: %.*s%.*s\n", what,
156 (fmt == CMIT_FMT_FULLER) ? 4 : 0,
157 filler, namelen, line);
159 switch (fmt) {
160 case CMIT_FMT_MEDIUM:
161 strbuf_addf(sb, "Date: %s\n", show_date(time, tz, dmode));
162 break;
163 case CMIT_FMT_EMAIL:
164 strbuf_addf(sb, "Date: %s\n", show_date(time, tz, DATE_RFC2822));
165 break;
166 case CMIT_FMT_FULLER:
167 strbuf_addf(sb, "%sDate: %s\n", what, show_date(time, tz, dmode));
168 break;
169 default:
170 /* notin' */
171 break;
175 static int is_empty_line(const char *line, int *len_p)
177 int len = *len_p;
178 while (len && isspace(line[len-1]))
179 len--;
180 *len_p = len;
181 return !len;
184 static const char *skip_empty_lines(const char *msg)
186 for (;;) {
187 int linelen = get_one_line(msg);
188 int ll = linelen;
189 if (!linelen)
190 break;
191 if (!is_empty_line(msg, &ll))
192 break;
193 msg += linelen;
195 return msg;
198 static void add_merge_info(enum cmit_fmt fmt, struct strbuf *sb,
199 const struct commit *commit, int abbrev)
201 struct commit_list *parent = commit->parents;
203 if ((fmt == CMIT_FMT_ONELINE) || (fmt == CMIT_FMT_EMAIL) ||
204 !parent || !parent->next)
205 return;
207 strbuf_addstr(sb, "Merge:");
209 while (parent) {
210 struct commit *p = parent->item;
211 const char *hex = NULL;
212 const char *dots;
213 if (abbrev)
214 hex = find_unique_abbrev(p->object.sha1, abbrev);
215 if (!hex)
216 hex = sha1_to_hex(p->object.sha1);
217 dots = (abbrev && strlen(hex) != 40) ? "..." : "";
218 parent = parent->next;
220 strbuf_addf(sb, " %s%s", hex, dots);
222 strbuf_addch(sb, '\n');
225 static char *get_header(const struct commit *commit, const char *key)
227 int key_len = strlen(key);
228 const char *line = commit->buffer;
230 for (;;) {
231 const char *eol = strchr(line, '\n'), *next;
233 if (line == eol)
234 return NULL;
235 if (!eol) {
236 eol = line + strlen(line);
237 next = NULL;
238 } else
239 next = eol + 1;
240 if (eol - line > key_len &&
241 !strncmp(line, key, key_len) &&
242 line[key_len] == ' ') {
243 return xmemdupz(line + key_len + 1, eol - line - key_len - 1);
245 line = next;
249 static char *replace_encoding_header(char *buf, const char *encoding)
251 struct strbuf tmp = STRBUF_INIT;
252 size_t start, len;
253 char *cp = buf;
255 /* guess if there is an encoding header before a \n\n */
256 while (strncmp(cp, "encoding ", strlen("encoding "))) {
257 cp = strchr(cp, '\n');
258 if (!cp || *++cp == '\n')
259 return buf;
261 start = cp - buf;
262 cp = strchr(cp, '\n');
263 if (!cp)
264 return buf; /* should not happen but be defensive */
265 len = cp + 1 - (buf + start);
267 strbuf_attach(&tmp, buf, strlen(buf), strlen(buf) + 1);
268 if (is_encoding_utf8(encoding)) {
269 /* we have re-coded to UTF-8; drop the header */
270 strbuf_remove(&tmp, start, len);
271 } else {
272 /* just replaces XXXX in 'encoding XXXX\n' */
273 strbuf_splice(&tmp, start + strlen("encoding "),
274 len - strlen("encoding \n"),
275 encoding, strlen(encoding));
277 return strbuf_detach(&tmp, NULL);
280 static char *logmsg_reencode(const struct commit *commit,
281 const char *output_encoding)
283 static const char *utf8 = "utf-8";
284 const char *use_encoding;
285 char *encoding;
286 char *out;
288 if (!*output_encoding)
289 return NULL;
290 encoding = get_header(commit, "encoding");
291 use_encoding = encoding ? encoding : utf8;
292 if (!strcmp(use_encoding, output_encoding))
293 if (encoding) /* we'll strip encoding header later */
294 out = xstrdup(commit->buffer);
295 else
296 return NULL; /* nothing to do */
297 else
298 out = reencode_string(commit->buffer,
299 output_encoding, use_encoding);
300 if (out)
301 out = replace_encoding_header(out, output_encoding);
303 free(encoding);
304 return out;
307 static int mailmap_name(struct strbuf *sb, const char *email)
309 static struct string_list *mail_map;
310 char buffer[1024];
312 if (!mail_map) {
313 mail_map = xcalloc(1, sizeof(*mail_map));
314 read_mailmap(mail_map, ".mailmap", NULL);
317 if (!mail_map->nr)
318 return -1;
320 if (!map_email(mail_map, email, buffer, sizeof(buffer)))
321 return -1;
322 strbuf_addstr(sb, buffer);
323 return 0;
326 static size_t format_person_part(struct strbuf *sb, char part,
327 const char *msg, int len, enum date_mode dmode)
329 /* currently all placeholders have same length */
330 const int placeholder_len = 2;
331 int start, end, tz = 0;
332 unsigned long date = 0;
333 char *ep;
335 /* advance 'end' to point to email start delimiter */
336 for (end = 0; end < len && msg[end] != '<'; end++)
337 ; /* do nothing */
340 * When end points at the '<' that we found, it should have
341 * matching '>' later, which means 'end' must be strictly
342 * below len - 1.
344 if (end >= len - 2)
345 goto skip;
347 if (part == 'n' || part == 'N') { /* name */
348 while (end > 0 && isspace(msg[end - 1]))
349 end--;
350 if (part != 'N' || !msg[end] || !msg[end + 1] ||
351 mailmap_name(sb, msg + end + 2) < 0)
352 strbuf_add(sb, msg, end);
353 return placeholder_len;
355 start = ++end; /* save email start position */
357 /* advance 'end' to point to email end delimiter */
358 for ( ; end < len && msg[end] != '>'; end++)
359 ; /* do nothing */
361 if (end >= len)
362 goto skip;
364 if (part == 'e') { /* email */
365 strbuf_add(sb, msg + start, end - start);
366 return placeholder_len;
369 /* advance 'start' to point to date start delimiter */
370 for (start = end + 1; start < len && isspace(msg[start]); start++)
371 ; /* do nothing */
372 if (start >= len)
373 goto skip;
374 date = strtoul(msg + start, &ep, 10);
375 if (msg + start == ep)
376 goto skip;
378 if (part == 't') { /* date, UNIX timestamp */
379 strbuf_add(sb, msg + start, ep - (msg + start));
380 return placeholder_len;
383 /* parse tz */
384 for (start = ep - msg + 1; start < len && isspace(msg[start]); start++)
385 ; /* do nothing */
386 if (start + 1 < len) {
387 tz = strtoul(msg + start + 1, NULL, 10);
388 if (msg[start] == '-')
389 tz = -tz;
392 switch (part) {
393 case 'd': /* date */
394 strbuf_addstr(sb, show_date(date, tz, dmode));
395 return placeholder_len;
396 case 'D': /* date, RFC2822 style */
397 strbuf_addstr(sb, show_date(date, tz, DATE_RFC2822));
398 return placeholder_len;
399 case 'r': /* date, relative */
400 strbuf_addstr(sb, show_date(date, tz, DATE_RELATIVE));
401 return placeholder_len;
402 case 'i': /* date, ISO 8601 */
403 strbuf_addstr(sb, show_date(date, tz, DATE_ISO8601));
404 return placeholder_len;
407 skip:
409 * bogus commit, 'sb' cannot be updated, but we still need to
410 * compute a valid return value.
412 if (part == 'n' || part == 'e' || part == 't' || part == 'd'
413 || part == 'D' || part == 'r' || part == 'i')
414 return placeholder_len;
416 return 0; /* unknown placeholder */
419 struct chunk {
420 size_t off;
421 size_t len;
424 struct format_commit_context {
425 const struct commit *commit;
426 enum date_mode dmode;
427 unsigned commit_header_parsed:1;
428 unsigned commit_message_parsed:1;
430 /* These offsets are relative to the start of the commit message. */
431 struct chunk author;
432 struct chunk committer;
433 struct chunk encoding;
434 size_t message_off;
435 size_t subject_off;
436 size_t body_off;
438 /* The following ones are relative to the result struct strbuf. */
439 struct chunk abbrev_commit_hash;
440 struct chunk abbrev_tree_hash;
441 struct chunk abbrev_parent_hashes;
444 static int add_again(struct strbuf *sb, struct chunk *chunk)
446 if (chunk->len) {
447 strbuf_adddup(sb, chunk->off, chunk->len);
448 return 1;
452 * We haven't seen this chunk before. Our caller is surely
453 * going to add it the hard way now. Remember the most likely
454 * start of the to-be-added chunk: the current end of the
455 * struct strbuf.
457 chunk->off = sb->len;
458 return 0;
461 static void parse_commit_header(struct format_commit_context *context)
463 const char *msg = context->commit->buffer;
464 int i;
466 for (i = 0; msg[i]; i++) {
467 int eol;
468 for (eol = i; msg[eol] && msg[eol] != '\n'; eol++)
469 ; /* do nothing */
471 if (i == eol) {
472 break;
473 } else if (!prefixcmp(msg + i, "author ")) {
474 context->author.off = i + 7;
475 context->author.len = eol - i - 7;
476 } else if (!prefixcmp(msg + i, "committer ")) {
477 context->committer.off = i + 10;
478 context->committer.len = eol - i - 10;
479 } else if (!prefixcmp(msg + i, "encoding ")) {
480 context->encoding.off = i + 9;
481 context->encoding.len = eol - i - 9;
483 i = eol;
485 context->message_off = i;
486 context->commit_header_parsed = 1;
489 static const char *format_subject(struct strbuf *sb, const char *msg,
490 const char *line_separator)
492 int first = 1;
494 for (;;) {
495 const char *line = msg;
496 int linelen = get_one_line(line);
498 msg += linelen;
499 if (!linelen || is_empty_line(line, &linelen))
500 break;
502 if (!sb)
503 continue;
504 strbuf_grow(sb, linelen + 2);
505 if (!first)
506 strbuf_addstr(sb, line_separator);
507 strbuf_add(sb, line, linelen);
508 first = 0;
510 return msg;
513 static void parse_commit_message(struct format_commit_context *c)
515 const char *msg = c->commit->buffer + c->message_off;
516 const char *start = c->commit->buffer;
518 msg = skip_empty_lines(msg);
519 c->subject_off = msg - start;
521 msg = format_subject(NULL, msg, NULL);
522 msg = skip_empty_lines(msg);
523 c->body_off = msg - start;
525 c->commit_message_parsed = 1;
528 static void format_decoration(struct strbuf *sb, const struct commit *commit)
530 struct name_decoration *d;
531 const char *prefix = " (";
533 load_ref_decorations();
534 d = lookup_decoration(&name_decoration, &commit->object);
535 while (d) {
536 strbuf_addstr(sb, prefix);
537 prefix = ", ";
538 strbuf_addstr(sb, d->name);
539 d = d->next;
541 if (prefix[0] == ',')
542 strbuf_addch(sb, ')');
545 static size_t format_commit_item(struct strbuf *sb, const char *placeholder,
546 void *context)
548 struct format_commit_context *c = context;
549 const struct commit *commit = c->commit;
550 const char *msg = commit->buffer;
551 struct commit_list *p;
552 int h1, h2;
554 /* these are independent of the commit */
555 switch (placeholder[0]) {
556 case 'C':
557 if (!prefixcmp(placeholder + 1, "red")) {
558 strbuf_addstr(sb, "\033[31m");
559 return 4;
560 } else if (!prefixcmp(placeholder + 1, "green")) {
561 strbuf_addstr(sb, "\033[32m");
562 return 6;
563 } else if (!prefixcmp(placeholder + 1, "blue")) {
564 strbuf_addstr(sb, "\033[34m");
565 return 5;
566 } else if (!prefixcmp(placeholder + 1, "reset")) {
567 strbuf_addstr(sb, "\033[m");
568 return 6;
569 } else
570 return 0;
571 case 'n': /* newline */
572 strbuf_addch(sb, '\n');
573 return 1;
574 case 'x':
575 /* %x00 == NUL, %x0a == LF, etc. */
576 if (0 <= (h1 = hexval_table[0xff & placeholder[1]]) &&
577 h1 <= 16 &&
578 0 <= (h2 = hexval_table[0xff & placeholder[2]]) &&
579 h2 <= 16) {
580 strbuf_addch(sb, (h1<<4)|h2);
581 return 3;
582 } else
583 return 0;
586 /* these depend on the commit */
587 if (!commit->object.parsed)
588 parse_object(commit->object.sha1);
590 switch (placeholder[0]) {
591 case 'H': /* commit hash */
592 strbuf_addstr(sb, sha1_to_hex(commit->object.sha1));
593 return 1;
594 case 'h': /* abbreviated commit hash */
595 if (add_again(sb, &c->abbrev_commit_hash))
596 return 1;
597 strbuf_addstr(sb, find_unique_abbrev(commit->object.sha1,
598 DEFAULT_ABBREV));
599 c->abbrev_commit_hash.len = sb->len - c->abbrev_commit_hash.off;
600 return 1;
601 case 'T': /* tree hash */
602 strbuf_addstr(sb, sha1_to_hex(commit->tree->object.sha1));
603 return 1;
604 case 't': /* abbreviated tree hash */
605 if (add_again(sb, &c->abbrev_tree_hash))
606 return 1;
607 strbuf_addstr(sb, find_unique_abbrev(commit->tree->object.sha1,
608 DEFAULT_ABBREV));
609 c->abbrev_tree_hash.len = sb->len - c->abbrev_tree_hash.off;
610 return 1;
611 case 'P': /* parent hashes */
612 for (p = commit->parents; p; p = p->next) {
613 if (p != commit->parents)
614 strbuf_addch(sb, ' ');
615 strbuf_addstr(sb, sha1_to_hex(p->item->object.sha1));
617 return 1;
618 case 'p': /* abbreviated parent hashes */
619 if (add_again(sb, &c->abbrev_parent_hashes))
620 return 1;
621 for (p = commit->parents; p; p = p->next) {
622 if (p != commit->parents)
623 strbuf_addch(sb, ' ');
624 strbuf_addstr(sb, find_unique_abbrev(
625 p->item->object.sha1, DEFAULT_ABBREV));
627 c->abbrev_parent_hashes.len = sb->len -
628 c->abbrev_parent_hashes.off;
629 return 1;
630 case 'm': /* left/right/bottom */
631 strbuf_addch(sb, (commit->object.flags & BOUNDARY)
632 ? '-'
633 : (commit->object.flags & SYMMETRIC_LEFT)
634 ? '<'
635 : '>');
636 return 1;
637 case 'd':
638 format_decoration(sb, commit);
639 return 1;
642 /* For the rest we have to parse the commit header. */
643 if (!c->commit_header_parsed)
644 parse_commit_header(c);
646 switch (placeholder[0]) {
647 case 'a': /* author ... */
648 return format_person_part(sb, placeholder[1],
649 msg + c->author.off, c->author.len,
650 c->dmode);
651 case 'c': /* committer ... */
652 return format_person_part(sb, placeholder[1],
653 msg + c->committer.off, c->committer.len,
654 c->dmode);
655 case 'e': /* encoding */
656 strbuf_add(sb, msg + c->encoding.off, c->encoding.len);
657 return 1;
660 /* Now we need to parse the commit message. */
661 if (!c->commit_message_parsed)
662 parse_commit_message(c);
664 switch (placeholder[0]) {
665 case 's': /* subject */
666 format_subject(sb, msg + c->subject_off, " ");
667 return 1;
668 case 'b': /* body */
669 strbuf_addstr(sb, msg + c->body_off);
670 return 1;
672 return 0; /* unknown placeholder */
675 void format_commit_message(const struct commit *commit,
676 const void *format, struct strbuf *sb,
677 enum date_mode dmode)
679 struct format_commit_context context;
681 memset(&context, 0, sizeof(context));
682 context.commit = commit;
683 context.dmode = dmode;
684 strbuf_expand(sb, format, format_commit_item, &context);
687 static void pp_header(enum cmit_fmt fmt,
688 int abbrev,
689 enum date_mode dmode,
690 const char *encoding,
691 const struct commit *commit,
692 const char **msg_p,
693 struct strbuf *sb)
695 int parents_shown = 0;
697 for (;;) {
698 const char *line = *msg_p;
699 int linelen = get_one_line(*msg_p);
701 if (!linelen)
702 return;
703 *msg_p += linelen;
705 if (linelen == 1)
706 /* End of header */
707 return;
709 if (fmt == CMIT_FMT_RAW) {
710 strbuf_add(sb, line, linelen);
711 continue;
714 if (!memcmp(line, "parent ", 7)) {
715 if (linelen != 48)
716 die("bad parent line in commit");
717 continue;
720 if (!parents_shown) {
721 struct commit_list *parent;
722 int num;
723 for (parent = commit->parents, num = 0;
724 parent;
725 parent = parent->next, num++)
727 /* with enough slop */
728 strbuf_grow(sb, num * 50 + 20);
729 add_merge_info(fmt, sb, commit, abbrev);
730 parents_shown = 1;
734 * MEDIUM == DEFAULT shows only author with dates.
735 * FULL shows both authors but not dates.
736 * FULLER shows both authors and dates.
738 if (!memcmp(line, "author ", 7)) {
739 strbuf_grow(sb, linelen + 80);
740 pp_user_info("Author", fmt, sb, line + 7, dmode, encoding);
742 if (!memcmp(line, "committer ", 10) &&
743 (fmt == CMIT_FMT_FULL || fmt == CMIT_FMT_FULLER)) {
744 strbuf_grow(sb, linelen + 80);
745 pp_user_info("Commit", fmt, sb, line + 10, dmode, encoding);
750 void pp_title_line(enum cmit_fmt fmt,
751 const char **msg_p,
752 struct strbuf *sb,
753 const char *subject,
754 const char *after_subject,
755 const char *encoding,
756 int need_8bit_cte)
758 const char *line_separator = (fmt == CMIT_FMT_EMAIL) ? "\n " : " ";
759 struct strbuf title;
761 strbuf_init(&title, 80);
762 *msg_p = format_subject(&title, *msg_p, line_separator);
764 strbuf_grow(sb, title.len + 1024);
765 if (subject) {
766 strbuf_addstr(sb, subject);
767 add_rfc2047(sb, title.buf, title.len, encoding);
768 } else {
769 strbuf_addbuf(sb, &title);
771 strbuf_addch(sb, '\n');
773 if (need_8bit_cte > 0) {
774 const char *header_fmt =
775 "MIME-Version: 1.0\n"
776 "Content-Type: text/plain; charset=%s\n"
777 "Content-Transfer-Encoding: 8bit\n";
778 strbuf_addf(sb, header_fmt, encoding);
780 if (after_subject) {
781 strbuf_addstr(sb, after_subject);
783 if (fmt == CMIT_FMT_EMAIL) {
784 strbuf_addch(sb, '\n');
786 strbuf_release(&title);
789 void pp_remainder(enum cmit_fmt fmt,
790 const char **msg_p,
791 struct strbuf *sb,
792 int indent)
794 int first = 1;
795 for (;;) {
796 const char *line = *msg_p;
797 int linelen = get_one_line(line);
798 *msg_p += linelen;
800 if (!linelen)
801 break;
803 if (is_empty_line(line, &linelen)) {
804 if (first)
805 continue;
806 if (fmt == CMIT_FMT_SHORT)
807 break;
809 first = 0;
811 strbuf_grow(sb, linelen + indent + 20);
812 if (indent) {
813 memset(sb->buf + sb->len, ' ', indent);
814 strbuf_setlen(sb, sb->len + indent);
816 strbuf_add(sb, line, linelen);
817 strbuf_addch(sb, '\n');
821 char *reencode_commit_message(const struct commit *commit, const char **encoding_p)
823 const char *encoding;
825 encoding = (git_log_output_encoding
826 ? git_log_output_encoding
827 : git_commit_encoding);
828 if (!encoding)
829 encoding = "utf-8";
830 if (encoding_p)
831 *encoding_p = encoding;
832 return logmsg_reencode(commit, encoding);
835 void pretty_print_commit(enum cmit_fmt fmt, const struct commit *commit,
836 struct strbuf *sb, int abbrev,
837 const char *subject, const char *after_subject,
838 enum date_mode dmode, int need_8bit_cte)
840 unsigned long beginning_of_body;
841 int indent = 4;
842 const char *msg = commit->buffer;
843 char *reencoded;
844 const char *encoding;
846 if (fmt == CMIT_FMT_USERFORMAT) {
847 format_commit_message(commit, user_format, sb, dmode);
848 return;
851 reencoded = reencode_commit_message(commit, &encoding);
852 if (reencoded) {
853 msg = reencoded;
856 if (fmt == CMIT_FMT_ONELINE || fmt == CMIT_FMT_EMAIL)
857 indent = 0;
860 * We need to check and emit Content-type: to mark it
861 * as 8-bit if we haven't done so.
863 if (fmt == CMIT_FMT_EMAIL && need_8bit_cte == 0) {
864 int i, ch, in_body;
866 for (in_body = i = 0; (ch = msg[i]); i++) {
867 if (!in_body) {
868 /* author could be non 7-bit ASCII but
869 * the log may be so; skip over the
870 * header part first.
872 if (ch == '\n' && msg[i+1] == '\n')
873 in_body = 1;
875 else if (non_ascii(ch)) {
876 need_8bit_cte = 1;
877 break;
882 pp_header(fmt, abbrev, dmode, encoding, commit, &msg, sb);
883 if (fmt != CMIT_FMT_ONELINE && !subject) {
884 strbuf_addch(sb, '\n');
887 /* Skip excess blank lines at the beginning of body, if any... */
888 msg = skip_empty_lines(msg);
890 /* These formats treat the title line specially. */
891 if (fmt == CMIT_FMT_ONELINE || fmt == CMIT_FMT_EMAIL)
892 pp_title_line(fmt, &msg, sb, subject,
893 after_subject, encoding, need_8bit_cte);
895 beginning_of_body = sb->len;
896 if (fmt != CMIT_FMT_ONELINE)
897 pp_remainder(fmt, &msg, sb, indent);
898 strbuf_rtrim(sb);
900 /* Make sure there is an EOLN for the non-oneline case */
901 if (fmt != CMIT_FMT_ONELINE)
902 strbuf_addch(sb, '\n');
905 * The caller may append additional body text in e-mail
906 * format. Make sure we did not strip the blank line
907 * between the header and the body.
909 if (fmt == CMIT_FMT_EMAIL && sb->len <= beginning_of_body)
910 strbuf_addch(sb, '\n');
911 free(reencoded);