make git-shell paranoid about closed stdin/stdout/stderr
[git/git.git] / pretty.c
CommitLineData
93fc05eb
JS
1#include "cache.h"
2#include "commit.h"
93fc05eb
JS
3#include "utf8.h"
4#include "diff.h"
5#include "revision.h"
c455c87c 6#include "string-list.h"
e0cbc397 7#include "mailmap.h"
93fc05eb 8
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JS
9static char *user_format;
10
4da45bef 11void get_commit_format(const char *arg, struct rev_info *rev)
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JS
12{
13 int i;
4da45bef
JH
14 static struct cmt_fmt_map {
15 const char *n;
16 size_t cmp_len;
17 enum cmit_fmt v;
18 } cmt_fmts[] = {
19 { "raw", 1, CMIT_FMT_RAW },
20 { "medium", 1, CMIT_FMT_MEDIUM },
21 { "short", 1, CMIT_FMT_SHORT },
22 { "email", 1, CMIT_FMT_EMAIL },
23 { "full", 5, CMIT_FMT_FULL },
24 { "fuller", 5, CMIT_FMT_FULLER },
25 { "oneline", 1, CMIT_FMT_ONELINE },
26 };
93fc05eb 27
4da45bef
JH
28 rev->use_terminator = 0;
29 if (!arg || !*arg) {
30 rev->commit_format = CMIT_FMT_DEFAULT;
31 return;
32 }
4da45bef
JH
33 if (!prefixcmp(arg, "format:") || !prefixcmp(arg, "tformat:")) {
34 const char *cp = strchr(arg, ':') + 1;
8e0f7003 35 free(user_format);
4da45bef
JH
36 user_format = xstrdup(cp);
37 if (arg[0] == 't')
38 rev->use_terminator = 1;
39 rev->commit_format = CMIT_FMT_USERFORMAT;
40 return;
93fc05eb
JS
41 }
42 for (i = 0; i < ARRAY_SIZE(cmt_fmts); i++) {
43 if (!strncmp(arg, cmt_fmts[i].n, cmt_fmts[i].cmp_len) &&
4da45bef
JH
44 !strncmp(arg, cmt_fmts[i].n, strlen(arg))) {
45 if (cmt_fmts[i].v == CMIT_FMT_ONELINE)
46 rev->use_terminator = 1;
47 rev->commit_format = cmt_fmts[i].v;
48 return;
49 }
93fc05eb
JS
50 }
51
52 die("invalid --pretty format: %s", arg);
53}
54
55/*
56 * Generic support for pretty-printing the header
57 */
58static int get_one_line(const char *msg)
59{
60 int ret = 0;
61
62 for (;;) {
63 char c = *msg++;
64 if (!c)
65 break;
66 ret++;
67 if (c == '\n')
68 break;
69 }
70 return ret;
71}
72
73/* High bit set, or ISO-2022-INT */
74int non_ascii(int ch)
75{
76 ch = (ch & 0xff);
77 return ((ch & 0x80) || (ch == 0x1b));
78}
79
80static int is_rfc2047_special(char ch)
81{
82 return (non_ascii(ch) || (ch == '=') || (ch == '?') || (ch == '_'));
83}
84
85static void add_rfc2047(struct strbuf *sb, const char *line, int len,
86 const char *encoding)
87{
88 int i, last;
89
90 for (i = 0; i < len; i++) {
91 int ch = line[i];
92 if (non_ascii(ch))
93 goto needquote;
94 if ((i + 1 < len) && (ch == '=' && line[i+1] == '?'))
95 goto needquote;
96 }
97 strbuf_add(sb, line, len);
98 return;
99
100needquote:
101 strbuf_grow(sb, len * 3 + strlen(encoding) + 100);
102 strbuf_addf(sb, "=?%s?q?", encoding);
103 for (i = last = 0; i < len; i++) {
104 unsigned ch = line[i] & 0xFF;
105 /*
106 * We encode ' ' using '=20' even though rfc2047
107 * allows using '_' for readability. Unfortunately,
108 * many programs do not understand this and just
109 * leave the underscore in place.
110 */
111 if (is_rfc2047_special(ch) || ch == ' ') {
112 strbuf_add(sb, line + last, i - last);
113 strbuf_addf(sb, "=%02X", ch);
114 last = i + 1;
115 }
116 }
117 strbuf_add(sb, line + last, len - last);
118 strbuf_addstr(sb, "?=");
119}
120
b02bd65f
DB
121void pp_user_info(const char *what, enum cmit_fmt fmt, struct strbuf *sb,
122 const char *line, enum date_mode dmode,
123 const char *encoding)
93fc05eb
JS
124{
125 char *date;
126 int namelen;
127 unsigned long time;
128 int tz;
129 const char *filler = " ";
130
131 if (fmt == CMIT_FMT_ONELINE)
132 return;
133 date = strchr(line, '>');
134 if (!date)
135 return;
136 namelen = ++date - line;
137 time = strtoul(date, &date, 10);
138 tz = strtol(date, NULL, 10);
139
140 if (fmt == CMIT_FMT_EMAIL) {
141 char *name_tail = strchr(line, '<');
142 int display_name_length;
143 if (!name_tail)
144 return;
145 while (line < name_tail && isspace(name_tail[-1]))
146 name_tail--;
147 display_name_length = name_tail - line;
148 filler = "";
149 strbuf_addstr(sb, "From: ");
150 add_rfc2047(sb, line, display_name_length, encoding);
151 strbuf_add(sb, name_tail, namelen - display_name_length);
152 strbuf_addch(sb, '\n');
153 } else {
154 strbuf_addf(sb, "%s: %.*s%.*s\n", what,
155 (fmt == CMIT_FMT_FULLER) ? 4 : 0,
156 filler, namelen, line);
157 }
158 switch (fmt) {
159 case CMIT_FMT_MEDIUM:
160 strbuf_addf(sb, "Date: %s\n", show_date(time, tz, dmode));
161 break;
162 case CMIT_FMT_EMAIL:
163 strbuf_addf(sb, "Date: %s\n", show_date(time, tz, DATE_RFC2822));
164 break;
165 case CMIT_FMT_FULLER:
166 strbuf_addf(sb, "%sDate: %s\n", what, show_date(time, tz, dmode));
167 break;
168 default:
169 /* notin' */
170 break;
171 }
172}
173
174static int is_empty_line(const char *line, int *len_p)
175{
176 int len = *len_p;
177 while (len && isspace(line[len-1]))
178 len--;
179 *len_p = len;
180 return !len;
181}
182
183static void add_merge_info(enum cmit_fmt fmt, struct strbuf *sb,
184 const struct commit *commit, int abbrev)
185{
186 struct commit_list *parent = commit->parents;
187
188 if ((fmt == CMIT_FMT_ONELINE) || (fmt == CMIT_FMT_EMAIL) ||
189 !parent || !parent->next)
190 return;
191
192 strbuf_addstr(sb, "Merge:");
193
194 while (parent) {
195 struct commit *p = parent->item;
196 const char *hex = NULL;
197 const char *dots;
198 if (abbrev)
199 hex = find_unique_abbrev(p->object.sha1, abbrev);
200 if (!hex)
201 hex = sha1_to_hex(p->object.sha1);
202 dots = (abbrev && strlen(hex) != 40) ? "..." : "";
203 parent = parent->next;
204
205 strbuf_addf(sb, " %s%s", hex, dots);
206 }
207 strbuf_addch(sb, '\n');
208}
209
210static char *get_header(const struct commit *commit, const char *key)
211{
212 int key_len = strlen(key);
213 const char *line = commit->buffer;
214
215 for (;;) {
216 const char *eol = strchr(line, '\n'), *next;
217
218 if (line == eol)
219 return NULL;
220 if (!eol) {
221 eol = line + strlen(line);
222 next = NULL;
223 } else
224 next = eol + 1;
225 if (eol - line > key_len &&
226 !strncmp(line, key, key_len) &&
227 line[key_len] == ' ') {
228 return xmemdupz(line + key_len + 1, eol - line - key_len - 1);
229 }
230 line = next;
231 }
232}
233
234static char *replace_encoding_header(char *buf, const char *encoding)
235{
236 struct strbuf tmp;
237 size_t start, len;
238 char *cp = buf;
239
240 /* guess if there is an encoding header before a \n\n */
241 while (strncmp(cp, "encoding ", strlen("encoding "))) {
242 cp = strchr(cp, '\n');
243 if (!cp || *++cp == '\n')
244 return buf;
245 }
246 start = cp - buf;
247 cp = strchr(cp, '\n');
248 if (!cp)
249 return buf; /* should not happen but be defensive */
250 len = cp + 1 - (buf + start);
251
252 strbuf_init(&tmp, 0);
253 strbuf_attach(&tmp, buf, strlen(buf), strlen(buf) + 1);
254 if (is_encoding_utf8(encoding)) {
255 /* we have re-coded to UTF-8; drop the header */
256 strbuf_remove(&tmp, start, len);
257 } else {
258 /* just replaces XXXX in 'encoding XXXX\n' */
259 strbuf_splice(&tmp, start + strlen("encoding "),
260 len - strlen("encoding \n"),
261 encoding, strlen(encoding));
262 }
263 return strbuf_detach(&tmp, NULL);
264}
265
266static char *logmsg_reencode(const struct commit *commit,
267 const char *output_encoding)
268{
269 static const char *utf8 = "utf-8";
270 const char *use_encoding;
271 char *encoding;
272 char *out;
273
274 if (!*output_encoding)
275 return NULL;
276 encoding = get_header(commit, "encoding");
277 use_encoding = encoding ? encoding : utf8;
278 if (!strcmp(use_encoding, output_encoding))
279 if (encoding) /* we'll strip encoding header later */
280 out = xstrdup(commit->buffer);
281 else
282 return NULL; /* nothing to do */
283 else
284 out = reencode_string(commit->buffer,
285 output_encoding, use_encoding);
286 if (out)
287 out = replace_encoding_header(out, output_encoding);
288
289 free(encoding);
290 return out;
291}
292
e0cbc397
JS
293static int mailmap_name(struct strbuf *sb, const char *email)
294{
c455c87c 295 static struct string_list *mail_map;
e0cbc397
JS
296 char buffer[1024];
297
298 if (!mail_map) {
299 mail_map = xcalloc(1, sizeof(*mail_map));
300 read_mailmap(mail_map, ".mailmap", NULL);
301 }
302
303 if (!mail_map->nr)
304 return -1;
305
306 if (!map_email(mail_map, email, buffer, sizeof(buffer)))
307 return -1;
308 strbuf_addstr(sb, buffer);
309 return 0;
310}
311
c3a670de 312static size_t format_person_part(struct strbuf *sb, char part,
cde75e59 313 const char *msg, int len)
93fc05eb 314{
c3a670de
MC
315 /* currently all placeholders have same length */
316 const int placeholder_len = 2;
93fc05eb 317 int start, end, tz = 0;
c3a670de 318 unsigned long date = 0;
93fc05eb
JS
319 char *ep;
320
c3a670de 321 /* advance 'end' to point to email start delimiter */
93fc05eb
JS
322 for (end = 0; end < len && msg[end] != '<'; end++)
323 ; /* do nothing */
c3a670de 324
f7ab5c79 325 /*
c3a670de
MC
326 * When end points at the '<' that we found, it should have
327 * matching '>' later, which means 'end' must be strictly
328 * below len - 1.
f7ab5c79 329 */
c3a670de
MC
330 if (end >= len - 2)
331 goto skip;
332
e0cbc397 333 if (part == 'n' || part == 'N') { /* name */
c3a670de
MC
334 while (end > 0 && isspace(msg[end - 1]))
335 end--;
e0cbc397
JS
336 if (part != 'N' || !msg[end] || !msg[end + 1] ||
337 mailmap_name(sb, msg + end + 2) < 0)
338 strbuf_add(sb, msg, end);
c3a670de 339 return placeholder_len;
cde75e59 340 }
c3a670de 341 start = ++end; /* save email start position */
93fc05eb 342
c3a670de
MC
343 /* advance 'end' to point to email end delimiter */
344 for ( ; end < len && msg[end] != '>'; end++)
93fc05eb
JS
345 ; /* do nothing */
346
347 if (end >= len)
c3a670de 348 goto skip;
93fc05eb 349
cde75e59
RS
350 if (part == 'e') { /* email */
351 strbuf_add(sb, msg + start, end - start);
c3a670de 352 return placeholder_len;
cde75e59 353 }
93fc05eb 354
c3a670de 355 /* advance 'start' to point to date start delimiter */
93fc05eb
JS
356 for (start = end + 1; start < len && isspace(msg[start]); start++)
357 ; /* do nothing */
358 if (start >= len)
c3a670de 359 goto skip;
93fc05eb
JS
360 date = strtoul(msg + start, &ep, 10);
361 if (msg + start == ep)
c3a670de 362 goto skip;
93fc05eb 363
cde75e59
RS
364 if (part == 't') { /* date, UNIX timestamp */
365 strbuf_add(sb, msg + start, ep - (msg + start));
c3a670de 366 return placeholder_len;
cde75e59 367 }
93fc05eb
JS
368
369 /* parse tz */
370 for (start = ep - msg + 1; start < len && isspace(msg[start]); start++)
371 ; /* do nothing */
372 if (start + 1 < len) {
373 tz = strtoul(msg + start + 1, NULL, 10);
374 if (msg[start] == '-')
375 tz = -tz;
376 }
377
cde75e59
RS
378 switch (part) {
379 case 'd': /* date */
380 strbuf_addstr(sb, show_date(date, tz, DATE_NORMAL));
c3a670de 381 return placeholder_len;
cde75e59
RS
382 case 'D': /* date, RFC2822 style */
383 strbuf_addstr(sb, show_date(date, tz, DATE_RFC2822));
c3a670de 384 return placeholder_len;
cde75e59
RS
385 case 'r': /* date, relative */
386 strbuf_addstr(sb, show_date(date, tz, DATE_RELATIVE));
c3a670de 387 return placeholder_len;
cde75e59
RS
388 case 'i': /* date, ISO 8601 */
389 strbuf_addstr(sb, show_date(date, tz, DATE_ISO8601));
c3a670de 390 return placeholder_len;
cde75e59 391 }
c3a670de
MC
392
393skip:
394 /*
395 * bogus commit, 'sb' cannot be updated, but we still need to
396 * compute a valid return value.
397 */
398 if (part == 'n' || part == 'e' || part == 't' || part == 'd'
399 || part == 'D' || part == 'r' || part == 'i')
400 return placeholder_len;
401
402 return 0; /* unknown placeholder */
93fc05eb
JS
403}
404
f29d5958
RS
405struct chunk {
406 size_t off;
407 size_t len;
408};
409
410struct format_commit_context {
411 const struct commit *commit;
412
413 /* These offsets are relative to the start of the commit message. */
414 int commit_header_parsed;
415 struct chunk subject;
416 struct chunk author;
417 struct chunk committer;
418 struct chunk encoding;
419 size_t body_off;
b9c62321
RS
420
421 /* The following ones are relative to the result struct strbuf. */
422 struct chunk abbrev_commit_hash;
423 struct chunk abbrev_tree_hash;
424 struct chunk abbrev_parent_hashes;
f29d5958
RS
425};
426
b9c62321
RS
427static int add_again(struct strbuf *sb, struct chunk *chunk)
428{
429 if (chunk->len) {
430 strbuf_adddup(sb, chunk->off, chunk->len);
431 return 1;
432 }
433
434 /*
435 * We haven't seen this chunk before. Our caller is surely
436 * going to add it the hard way now. Remember the most likely
437 * start of the to-be-added chunk: the current end of the
438 * struct strbuf.
439 */
440 chunk->off = sb->len;
441 return 0;
442}
443
f29d5958 444static void parse_commit_header(struct format_commit_context *context)
93fc05eb 445{
f29d5958 446 const char *msg = context->commit->buffer;
93fc05eb
JS
447 int i;
448 enum { HEADER, SUBJECT, BODY } state;
f29d5958
RS
449
450 for (i = 0, state = HEADER; msg[i] && state < BODY; i++) {
451 int eol;
452 for (eol = i; msg[eol] && msg[eol] != '\n'; eol++)
453 ; /* do nothing */
454
455 if (state == SUBJECT) {
456 context->subject.off = i;
457 context->subject.len = eol - i;
458 i = eol;
459 }
460 if (i == eol) {
461 state++;
462 /* strip empty lines */
7ed0988a 463 while (msg[eol] == '\n' && msg[eol + 1] == '\n')
f29d5958
RS
464 eol++;
465 } else if (!prefixcmp(msg + i, "author ")) {
466 context->author.off = i + 7;
467 context->author.len = eol - i - 7;
468 } else if (!prefixcmp(msg + i, "committer ")) {
469 context->committer.off = i + 10;
470 context->committer.len = eol - i - 10;
471 } else if (!prefixcmp(msg + i, "encoding ")) {
472 context->encoding.off = i + 9;
473 context->encoding.len = eol - i - 9;
474 }
475 i = eol;
7ed0988a
RS
476 if (!msg[i])
477 break;
f29d5958
RS
478 }
479 context->body_off = i;
480 context->commit_header_parsed = 1;
481}
482
c3a670de 483static size_t format_commit_item(struct strbuf *sb, const char *placeholder,
f29d5958
RS
484 void *context)
485{
486 struct format_commit_context *c = context;
487 const struct commit *commit = c->commit;
93fc05eb 488 const char *msg = commit->buffer;
f29d5958 489 struct commit_list *p;
42c8c74c 490 int h1, h2;
93fc05eb 491
93fc05eb 492 /* these are independent of the commit */
cde75e59
RS
493 switch (placeholder[0]) {
494 case 'C':
c3a670de 495 if (!prefixcmp(placeholder + 1, "red")) {
cde75e59 496 strbuf_addstr(sb, "\033[31m");
c3a670de
MC
497 return 4;
498 } else if (!prefixcmp(placeholder + 1, "green")) {
cde75e59 499 strbuf_addstr(sb, "\033[32m");
c3a670de
MC
500 return 6;
501 } else if (!prefixcmp(placeholder + 1, "blue")) {
cde75e59 502 strbuf_addstr(sb, "\033[34m");
c3a670de
MC
503 return 5;
504 } else if (!prefixcmp(placeholder + 1, "reset")) {
cde75e59 505 strbuf_addstr(sb, "\033[m");
c3a670de
MC
506 return 6;
507 } else
508 return 0;
cde75e59
RS
509 case 'n': /* newline */
510 strbuf_addch(sb, '\n');
c3a670de 511 return 1;
42c8c74c
GS
512 case 'x':
513 /* %x00 == NUL, %x0a == LF, etc. */
514 if (0 <= (h1 = hexval_table[0xff & placeholder[1]]) &&
515 h1 <= 16 &&
516 0 <= (h2 = hexval_table[0xff & placeholder[2]]) &&
517 h2 <= 16) {
518 strbuf_addch(sb, (h1<<4)|h2);
519 return 3;
520 } else
521 return 0;
cde75e59 522 }
93fc05eb
JS
523
524 /* these depend on the commit */
525 if (!commit->object.parsed)
526 parse_object(commit->object.sha1);
93fc05eb 527
cde75e59
RS
528 switch (placeholder[0]) {
529 case 'H': /* commit hash */
530 strbuf_addstr(sb, sha1_to_hex(commit->object.sha1));
c3a670de 531 return 1;
cde75e59 532 case 'h': /* abbreviated commit hash */
b9c62321 533 if (add_again(sb, &c->abbrev_commit_hash))
c3a670de 534 return 1;
cde75e59
RS
535 strbuf_addstr(sb, find_unique_abbrev(commit->object.sha1,
536 DEFAULT_ABBREV));
b9c62321 537 c->abbrev_commit_hash.len = sb->len - c->abbrev_commit_hash.off;
c3a670de 538 return 1;
cde75e59
RS
539 case 'T': /* tree hash */
540 strbuf_addstr(sb, sha1_to_hex(commit->tree->object.sha1));
c3a670de 541 return 1;
cde75e59 542 case 't': /* abbreviated tree hash */
b9c62321 543 if (add_again(sb, &c->abbrev_tree_hash))
c3a670de 544 return 1;
cde75e59
RS
545 strbuf_addstr(sb, find_unique_abbrev(commit->tree->object.sha1,
546 DEFAULT_ABBREV));
b9c62321 547 c->abbrev_tree_hash.len = sb->len - c->abbrev_tree_hash.off;
c3a670de 548 return 1;
cde75e59
RS
549 case 'P': /* parent hashes */
550 for (p = commit->parents; p; p = p->next) {
551 if (p != commit->parents)
552 strbuf_addch(sb, ' ');
553 strbuf_addstr(sb, sha1_to_hex(p->item->object.sha1));
554 }
c3a670de 555 return 1;
cde75e59 556 case 'p': /* abbreviated parent hashes */
b9c62321 557 if (add_again(sb, &c->abbrev_parent_hashes))
c3a670de 558 return 1;
cde75e59
RS
559 for (p = commit->parents; p; p = p->next) {
560 if (p != commit->parents)
561 strbuf_addch(sb, ' ');
562 strbuf_addstr(sb, find_unique_abbrev(
563 p->item->object.sha1, DEFAULT_ABBREV));
564 }
b9c62321
RS
565 c->abbrev_parent_hashes.len = sb->len -
566 c->abbrev_parent_hashes.off;
c3a670de 567 return 1;
cde75e59
RS
568 case 'm': /* left/right/bottom */
569 strbuf_addch(sb, (commit->object.flags & BOUNDARY)
570 ? '-'
571 : (commit->object.flags & SYMMETRIC_LEFT)
572 ? '<'
573 : '>');
c3a670de 574 return 1;
cde75e59
RS
575 }
576
577 /* For the rest we have to parse the commit header. */
f29d5958
RS
578 if (!c->commit_header_parsed)
579 parse_commit_header(c);
93fc05eb 580
f29d5958 581 switch (placeholder[0]) {
c3a670de 582 case 's': /* subject */
f29d5958 583 strbuf_add(sb, msg + c->subject.off, c->subject.len);
c3a670de
MC
584 return 1;
585 case 'a': /* author ... */
586 return format_person_part(sb, placeholder[1],
f29d5958 587 msg + c->author.off, c->author.len);
c3a670de
MC
588 case 'c': /* committer ... */
589 return format_person_part(sb, placeholder[1],
f29d5958 590 msg + c->committer.off, c->committer.len);
c3a670de 591 case 'e': /* encoding */
f29d5958 592 strbuf_add(sb, msg + c->encoding.off, c->encoding.len);
c3a670de
MC
593 return 1;
594 case 'b': /* body */
f29d5958 595 strbuf_addstr(sb, msg + c->body_off);
c3a670de 596 return 1;
93fc05eb 597 }
c3a670de 598 return 0; /* unknown placeholder */
cde75e59
RS
599}
600
601void format_commit_message(const struct commit *commit,
602 const void *format, struct strbuf *sb)
603{
f29d5958
RS
604 struct format_commit_context context;
605
606 memset(&context, 0, sizeof(context));
607 context.commit = commit;
c3a670de 608 strbuf_expand(sb, format, format_commit_item, &context);
93fc05eb
JS
609}
610
611static void pp_header(enum cmit_fmt fmt,
612 int abbrev,
613 enum date_mode dmode,
614 const char *encoding,
615 const struct commit *commit,
616 const char **msg_p,
617 struct strbuf *sb)
618{
619 int parents_shown = 0;
620
621 for (;;) {
622 const char *line = *msg_p;
623 int linelen = get_one_line(*msg_p);
624
625 if (!linelen)
626 return;
627 *msg_p += linelen;
628
629 if (linelen == 1)
630 /* End of header */
631 return;
632
633 if (fmt == CMIT_FMT_RAW) {
634 strbuf_add(sb, line, linelen);
635 continue;
636 }
637
638 if (!memcmp(line, "parent ", 7)) {
639 if (linelen != 48)
640 die("bad parent line in commit");
641 continue;
642 }
643
644 if (!parents_shown) {
645 struct commit_list *parent;
646 int num;
647 for (parent = commit->parents, num = 0;
648 parent;
649 parent = parent->next, num++)
650 ;
651 /* with enough slop */
652 strbuf_grow(sb, num * 50 + 20);
653 add_merge_info(fmt, sb, commit, abbrev);
654 parents_shown = 1;
655 }
656
657 /*
658 * MEDIUM == DEFAULT shows only author with dates.
659 * FULL shows both authors but not dates.
660 * FULLER shows both authors and dates.
661 */
662 if (!memcmp(line, "author ", 7)) {
663 strbuf_grow(sb, linelen + 80);
b02bd65f 664 pp_user_info("Author", fmt, sb, line + 7, dmode, encoding);
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665 }
666 if (!memcmp(line, "committer ", 10) &&
667 (fmt == CMIT_FMT_FULL || fmt == CMIT_FMT_FULLER)) {
668 strbuf_grow(sb, linelen + 80);
b02bd65f 669 pp_user_info("Commit", fmt, sb, line + 10, dmode, encoding);
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670 }
671 }
672}
673
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674void pp_title_line(enum cmit_fmt fmt,
675 const char **msg_p,
676 struct strbuf *sb,
677 const char *subject,
678 const char *after_subject,
679 const char *encoding,
267123b4 680 int need_8bit_cte)
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681{
682 struct strbuf title;
683
684 strbuf_init(&title, 80);
685
686 for (;;) {
687 const char *line = *msg_p;
688 int linelen = get_one_line(line);
689
690 *msg_p += linelen;
691 if (!linelen || is_empty_line(line, &linelen))
692 break;
693
694 strbuf_grow(&title, linelen + 2);
695 if (title.len) {
696 if (fmt == CMIT_FMT_EMAIL) {
697 strbuf_addch(&title, '\n');
698 }
699 strbuf_addch(&title, ' ');
700 }
701 strbuf_add(&title, line, linelen);
702 }
703
704 strbuf_grow(sb, title.len + 1024);
705 if (subject) {
706 strbuf_addstr(sb, subject);
707 add_rfc2047(sb, title.buf, title.len, encoding);
708 } else {
709 strbuf_addbuf(sb, &title);
710 }
711 strbuf_addch(sb, '\n');
712
6bf4f1b4 713 if (need_8bit_cte > 0) {
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714 const char *header_fmt =
715 "MIME-Version: 1.0\n"
716 "Content-Type: text/plain; charset=%s\n"
717 "Content-Transfer-Encoding: 8bit\n";
718 strbuf_addf(sb, header_fmt, encoding);
719 }
720 if (after_subject) {
721 strbuf_addstr(sb, after_subject);
722 }
723 if (fmt == CMIT_FMT_EMAIL) {
724 strbuf_addch(sb, '\n');
725 }
726 strbuf_release(&title);
727}
728
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729void pp_remainder(enum cmit_fmt fmt,
730 const char **msg_p,
731 struct strbuf *sb,
732 int indent)
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733{
734 int first = 1;
735 for (;;) {
736 const char *line = *msg_p;
737 int linelen = get_one_line(line);
738 *msg_p += linelen;
739
740 if (!linelen)
741 break;
742
743 if (is_empty_line(line, &linelen)) {
744 if (first)
745 continue;
746 if (fmt == CMIT_FMT_SHORT)
747 break;
748 }
749 first = 0;
750
751 strbuf_grow(sb, linelen + indent + 20);
752 if (indent) {
753 memset(sb->buf + sb->len, ' ', indent);
754 strbuf_setlen(sb, sb->len + indent);
755 }
756 strbuf_add(sb, line, linelen);
757 strbuf_addch(sb, '\n');
758 }
759}
760
761void pretty_print_commit(enum cmit_fmt fmt, const struct commit *commit,
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762 struct strbuf *sb, int abbrev,
763 const char *subject, const char *after_subject,
764 enum date_mode dmode, int need_8bit_cte)
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765{
766 unsigned long beginning_of_body;
767 int indent = 4;
768 const char *msg = commit->buffer;
769 char *reencoded;
770 const char *encoding;
771
772 if (fmt == CMIT_FMT_USERFORMAT) {
773 format_commit_message(commit, user_format, sb);
774 return;
775 }
776
777 encoding = (git_log_output_encoding
778 ? git_log_output_encoding
779 : git_commit_encoding);
780 if (!encoding)
781 encoding = "utf-8";
782 reencoded = logmsg_reencode(commit, encoding);
783 if (reencoded) {
784 msg = reencoded;
785 }
786
787 if (fmt == CMIT_FMT_ONELINE || fmt == CMIT_FMT_EMAIL)
788 indent = 0;
789
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790 /*
791 * We need to check and emit Content-type: to mark it
792 * as 8-bit if we haven't done so.
93fc05eb 793 */
6bf4f1b4 794 if (fmt == CMIT_FMT_EMAIL && need_8bit_cte == 0) {
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795 int i, ch, in_body;
796
797 for (in_body = i = 0; (ch = msg[i]); i++) {
798 if (!in_body) {
799 /* author could be non 7-bit ASCII but
800 * the log may be so; skip over the
801 * header part first.
802 */
803 if (ch == '\n' && msg[i+1] == '\n')
804 in_body = 1;
805 }
806 else if (non_ascii(ch)) {
6bf4f1b4 807 need_8bit_cte = 1;
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808 break;
809 }
810 }
811 }
812
813 pp_header(fmt, abbrev, dmode, encoding, commit, &msg, sb);
814 if (fmt != CMIT_FMT_ONELINE && !subject) {
815 strbuf_addch(sb, '\n');
816 }
817
818 /* Skip excess blank lines at the beginning of body, if any... */
819 for (;;) {
820 int linelen = get_one_line(msg);
821 int ll = linelen;
822 if (!linelen)
823 break;
824 if (!is_empty_line(msg, &ll))
825 break;
826 msg += linelen;
827 }
828
829 /* These formats treat the title line specially. */
830 if (fmt == CMIT_FMT_ONELINE || fmt == CMIT_FMT_EMAIL)
831 pp_title_line(fmt, &msg, sb, subject,
6bf4f1b4 832 after_subject, encoding, need_8bit_cte);
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833
834 beginning_of_body = sb->len;
835 if (fmt != CMIT_FMT_ONELINE)
836 pp_remainder(fmt, &msg, sb, indent);
837 strbuf_rtrim(sb);
838
839 /* Make sure there is an EOLN for the non-oneline case */
840 if (fmt != CMIT_FMT_ONELINE)
841 strbuf_addch(sb, '\n');
842
843 /*
844 * The caller may append additional body text in e-mail
845 * format. Make sure we did not strip the blank line
846 * between the header and the body.
847 */
848 if (fmt == CMIT_FMT_EMAIL && sb->len <= beginning_of_body)
849 strbuf_addch(sb, '\n');
850 free(reencoded);
851}