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Commit | Line | Data |
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8f1d2e6f | 1 | #include "cache.h" |
961784ee | 2 | #include "tag.h" |
175785e5 | 3 | #include "commit.h" |
ed09aef0 | 4 | #include "pkt-line.h" |
52883fbd | 5 | #include "utf8.h" |
175785e5 | 6 | |
60ab26de LT |
7 | int save_commit_buffer = 1; |
8 | ||
ab580ace JS |
9 | struct sort_node |
10 | { | |
11 | /* | |
55c3eb43 TS |
12 | * the number of children of the associated commit |
13 | * that also occur in the list being sorted. | |
14 | */ | |
ab580ace JS |
15 | unsigned int indegree; |
16 | ||
17 | /* | |
55c3eb43 TS |
18 | * reference to original list item that we will re-use |
19 | * on output. | |
20 | */ | |
ab580ace JS |
21 | struct commit_list * list_item; |
22 | ||
23 | }; | |
24 | ||
175785e5 DB |
25 | const char *commit_type = "commit"; |
26 | ||
6cdfd179 EW |
27 | struct cmt_fmt_map { |
28 | const char *n; | |
29 | size_t cmp_len; | |
30 | enum cmit_fmt v; | |
31 | } cmt_fmts[] = { | |
32 | { "raw", 1, CMIT_FMT_RAW }, | |
33 | { "medium", 1, CMIT_FMT_MEDIUM }, | |
34 | { "short", 1, CMIT_FMT_SHORT }, | |
328b710d | 35 | { "email", 1, CMIT_FMT_EMAIL }, |
6cdfd179 EW |
36 | { "full", 5, CMIT_FMT_FULL }, |
37 | { "fuller", 5, CMIT_FMT_FULLER }, | |
38 | { "oneline", 1, CMIT_FMT_ONELINE }, | |
39 | }; | |
40 | ||
9b66ec04 LT |
41 | enum cmit_fmt get_commit_format(const char *arg) |
42 | { | |
6cdfd179 EW |
43 | int i; |
44 | ||
45 | if (!arg || !*arg) | |
9b66ec04 | 46 | return CMIT_FMT_DEFAULT; |
6cdfd179 EW |
47 | if (*arg == '=') |
48 | arg++; | |
49 | for (i = 0; i < ARRAY_SIZE(cmt_fmts); i++) { | |
50 | if (!strncmp(arg, cmt_fmts[i].n, cmt_fmts[i].cmp_len)) | |
51 | return cmt_fmts[i].v; | |
52 | } | |
53 | ||
54 | die("invalid --pretty format: %s", arg); | |
9b66ec04 LT |
55 | } |
56 | ||
f76412ed JH |
57 | static struct commit *check_commit(struct object *obj, |
58 | const unsigned char *sha1, | |
59 | int quiet) | |
961784ee | 60 | { |
1974632c | 61 | if (obj->type != OBJ_COMMIT) { |
f76412ed JH |
62 | if (!quiet) |
63 | error("Object %s is a %s, not a commit", | |
885a86ab | 64 | sha1_to_hex(sha1), typename(obj->type)); |
961784ee LT |
65 | return NULL; |
66 | } | |
67 | return (struct commit *) obj; | |
68 | } | |
69 | ||
f76412ed JH |
70 | struct commit *lookup_commit_reference_gently(const unsigned char *sha1, |
71 | int quiet) | |
961784ee | 72 | { |
9534f40b | 73 | struct object *obj = deref_tag(parse_object(sha1), NULL, 0); |
961784ee LT |
74 | |
75 | if (!obj) | |
76 | return NULL; | |
f76412ed JH |
77 | return check_commit(obj, sha1, quiet); |
78 | } | |
79 | ||
80 | struct commit *lookup_commit_reference(const unsigned char *sha1) | |
81 | { | |
82 | return lookup_commit_reference_gently(sha1, 0); | |
961784ee LT |
83 | } |
84 | ||
5d6ccf5c | 85 | struct commit *lookup_commit(const unsigned char *sha1) |
175785e5 DB |
86 | { |
87 | struct object *obj = lookup_object(sha1); | |
88 | if (!obj) { | |
855419f7 | 89 | struct commit *ret = alloc_commit_node(); |
175785e5 | 90 | created_object(sha1, &ret->object); |
1974632c | 91 | ret->object.type = OBJ_COMMIT; |
175785e5 DB |
92 | return ret; |
93 | } | |
d1af002d | 94 | if (!obj->type) |
1974632c | 95 | obj->type = OBJ_COMMIT; |
f76412ed | 96 | return check_commit(obj, sha1, 0); |
175785e5 DB |
97 | } |
98 | ||
99 | static unsigned long parse_commit_date(const char *buf) | |
100 | { | |
101 | unsigned long date; | |
102 | ||
103 | if (memcmp(buf, "author", 6)) | |
104 | return 0; | |
105 | while (*buf++ != '\n') | |
106 | /* nada */; | |
107 | if (memcmp(buf, "committer", 9)) | |
108 | return 0; | |
109 | while (*buf++ != '>') | |
110 | /* nada */; | |
111 | date = strtoul(buf, NULL, 10); | |
112 | if (date == ULONG_MAX) | |
113 | date = 0; | |
114 | return date; | |
115 | } | |
116 | ||
5040f17e | 117 | static struct commit_graft **commit_graft; |
5da5c8f4 JH |
118 | static int commit_graft_alloc, commit_graft_nr; |
119 | ||
120 | static int commit_graft_pos(const unsigned char *sha1) | |
121 | { | |
122 | int lo, hi; | |
123 | lo = 0; | |
124 | hi = commit_graft_nr; | |
125 | while (lo < hi) { | |
126 | int mi = (lo + hi) / 2; | |
127 | struct commit_graft *graft = commit_graft[mi]; | |
a89fccd2 | 128 | int cmp = hashcmp(sha1, graft->sha1); |
5da5c8f4 JH |
129 | if (!cmp) |
130 | return mi; | |
131 | if (cmp < 0) | |
132 | hi = mi; | |
133 | else | |
134 | lo = mi + 1; | |
135 | } | |
136 | return -lo - 1; | |
137 | } | |
138 | ||
5040f17e JH |
139 | int register_commit_graft(struct commit_graft *graft, int ignore_dups) |
140 | { | |
141 | int pos = commit_graft_pos(graft->sha1); | |
142 | ||
143 | if (0 <= pos) { | |
144 | if (ignore_dups) | |
145 | free(graft); | |
146 | else { | |
147 | free(commit_graft[pos]); | |
148 | commit_graft[pos] = graft; | |
149 | } | |
150 | return 1; | |
151 | } | |
152 | pos = -pos - 1; | |
153 | if (commit_graft_alloc <= ++commit_graft_nr) { | |
154 | commit_graft_alloc = alloc_nr(commit_graft_alloc); | |
155 | commit_graft = xrealloc(commit_graft, | |
156 | sizeof(*commit_graft) * | |
157 | commit_graft_alloc); | |
158 | } | |
159 | if (pos < commit_graft_nr) | |
160 | memmove(commit_graft + pos + 1, | |
161 | commit_graft + pos, | |
162 | (commit_graft_nr - pos - 1) * | |
163 | sizeof(*commit_graft)); | |
164 | commit_graft[pos] = graft; | |
165 | return 0; | |
166 | } | |
167 | ||
168 | struct commit_graft *read_graft_line(char *buf, int len) | |
169 | { | |
170 | /* The format is just "Commit Parent1 Parent2 ...\n" */ | |
171 | int i; | |
172 | struct commit_graft *graft = NULL; | |
173 | ||
174 | if (buf[len-1] == '\n') | |
175 | buf[--len] = 0; | |
360204c3 | 176 | if (buf[0] == '#' || buf[0] == '\0') |
5bc4ce58 | 177 | return NULL; |
5040f17e JH |
178 | if ((len + 1) % 41) { |
179 | bad_graft_data: | |
180 | error("bad graft data: %s", buf); | |
181 | free(graft); | |
182 | return NULL; | |
183 | } | |
184 | i = (len + 1) / 41 - 1; | |
185 | graft = xmalloc(sizeof(*graft) + 20 * i); | |
186 | graft->nr_parent = i; | |
187 | if (get_sha1_hex(buf, graft->sha1)) | |
188 | goto bad_graft_data; | |
189 | for (i = 40; i < len; i += 41) { | |
190 | if (buf[i] != ' ') | |
191 | goto bad_graft_data; | |
192 | if (get_sha1_hex(buf + i + 1, graft->parent[i/41])) | |
193 | goto bad_graft_data; | |
194 | } | |
195 | return graft; | |
196 | } | |
197 | ||
198 | int read_graft_file(const char *graft_file) | |
5da5c8f4 | 199 | { |
5da5c8f4 JH |
200 | FILE *fp = fopen(graft_file, "r"); |
201 | char buf[1024]; | |
5040f17e JH |
202 | if (!fp) |
203 | return -1; | |
5da5c8f4 JH |
204 | while (fgets(buf, sizeof(buf), fp)) { |
205 | /* The format is just "Commit Parent1 Parent2 ...\n" */ | |
206 | int len = strlen(buf); | |
5040f17e | 207 | struct commit_graft *graft = read_graft_line(buf, len); |
5bc4ce58 JH |
208 | if (!graft) |
209 | continue; | |
5040f17e | 210 | if (register_commit_graft(graft, 1)) |
5da5c8f4 | 211 | error("duplicate graft data: %s", buf); |
5da5c8f4 JH |
212 | } |
213 | fclose(fp); | |
5040f17e JH |
214 | return 0; |
215 | } | |
216 | ||
217 | static void prepare_commit_graft(void) | |
218 | { | |
219 | static int commit_graft_prepared; | |
220 | char *graft_file; | |
221 | ||
222 | if (commit_graft_prepared) | |
223 | return; | |
224 | graft_file = get_graft_file(); | |
225 | read_graft_file(graft_file); | |
ed09aef0 JS |
226 | /* make sure shallows are read */ |
227 | is_repository_shallow(); | |
5040f17e | 228 | commit_graft_prepared = 1; |
5da5c8f4 JH |
229 | } |
230 | ||
231 | static struct commit_graft *lookup_commit_graft(const unsigned char *sha1) | |
232 | { | |
233 | int pos; | |
5040f17e | 234 | prepare_commit_graft(); |
5da5c8f4 JH |
235 | pos = commit_graft_pos(sha1); |
236 | if (pos < 0) | |
237 | return NULL; | |
238 | return commit_graft[pos]; | |
239 | } | |
240 | ||
ed09aef0 JS |
241 | int write_shallow_commits(int fd, int use_pack_protocol) |
242 | { | |
243 | int i, count = 0; | |
244 | for (i = 0; i < commit_graft_nr; i++) | |
245 | if (commit_graft[i]->nr_parent < 0) { | |
246 | const char *hex = | |
247 | sha1_to_hex(commit_graft[i]->sha1); | |
248 | count++; | |
249 | if (use_pack_protocol) | |
250 | packet_write(fd, "shallow %s", hex); | |
251 | else { | |
93822c22 AW |
252 | if (write_in_full(fd, hex, 40) != 40) |
253 | break; | |
254 | if (write_in_full(fd, "\n", 1) != 1) | |
255 | break; | |
ed09aef0 JS |
256 | } |
257 | } | |
258 | return count; | |
259 | } | |
260 | ||
f53514bc JS |
261 | int unregister_shallow(const unsigned char *sha1) |
262 | { | |
263 | int pos = commit_graft_pos(sha1); | |
264 | if (pos < 0) | |
265 | return -1; | |
266 | if (pos + 1 < commit_graft_nr) | |
267 | memcpy(commit_graft + pos, commit_graft + pos + 1, | |
268 | sizeof(struct commit_graft *) | |
269 | * (commit_graft_nr - pos - 1)); | |
270 | commit_graft_nr--; | |
271 | return 0; | |
272 | } | |
273 | ||
bd2c39f5 | 274 | int parse_commit_buffer(struct commit *item, void *buffer, unsigned long size) |
175785e5 | 275 | { |
3b44f15a | 276 | char *tail = buffer; |
f7cc77d7 | 277 | char *bufptr = buffer; |
175785e5 | 278 | unsigned char parent[20]; |
6c88be16 | 279 | struct commit_list **pptr; |
5da5c8f4 | 280 | struct commit_graft *graft; |
27dedf0c | 281 | unsigned n_refs = 0; |
bd2c39f5 | 282 | |
175785e5 DB |
283 | if (item->object.parsed) |
284 | return 0; | |
285 | item->object.parsed = 1; | |
3b44f15a JH |
286 | tail += size; |
287 | if (tail <= bufptr + 5 || memcmp(bufptr, "tree ", 5)) | |
f7cc77d7 | 288 | return error("bogus commit object %s", sha1_to_hex(item->object.sha1)); |
3b44f15a | 289 | if (tail <= bufptr + 45 || get_sha1_hex(bufptr + 5, parent) < 0) |
bd2afde8 JH |
290 | return error("bad tree pointer in commit %s", |
291 | sha1_to_hex(item->object.sha1)); | |
175785e5 | 292 | item->tree = lookup_tree(parent); |
235ac407 | 293 | if (item->tree) |
27dedf0c | 294 | n_refs++; |
175785e5 | 295 | bufptr += 46; /* "tree " + "hex sha1" + "\n" */ |
6c88be16 | 296 | pptr = &item->parents; |
5da5c8f4 JH |
297 | |
298 | graft = lookup_commit_graft(item->object.sha1); | |
3b44f15a | 299 | while (bufptr + 48 < tail && !memcmp(bufptr, "parent ", 7)) { |
f7cc77d7 LT |
300 | struct commit *new_parent; |
301 | ||
3b44f15a JH |
302 | if (tail <= bufptr + 48 || |
303 | get_sha1_hex(bufptr + 7, parent) || | |
304 | bufptr[47] != '\n') | |
f7cc77d7 | 305 | return error("bad parents in commit %s", sha1_to_hex(item->object.sha1)); |
5da5c8f4 JH |
306 | bufptr += 48; |
307 | if (graft) | |
308 | continue; | |
f7cc77d7 | 309 | new_parent = lookup_commit(parent); |
235ac407 | 310 | if (new_parent) { |
6c88be16 | 311 | pptr = &commit_list_insert(new_parent, pptr)->next; |
27dedf0c | 312 | n_refs++; |
235ac407 | 313 | } |
5da5c8f4 JH |
314 | } |
315 | if (graft) { | |
316 | int i; | |
317 | struct commit *new_parent; | |
318 | for (i = 0; i < graft->nr_parent; i++) { | |
319 | new_parent = lookup_commit(graft->parent[i]); | |
320 | if (!new_parent) | |
321 | continue; | |
322 | pptr = &commit_list_insert(new_parent, pptr)->next; | |
27dedf0c | 323 | n_refs++; |
5da5c8f4 | 324 | } |
175785e5 DB |
325 | } |
326 | item->date = parse_commit_date(bufptr); | |
27dedf0c JH |
327 | |
328 | if (track_object_refs) { | |
329 | unsigned i = 0; | |
330 | struct commit_list *p; | |
331 | struct object_refs *refs = alloc_object_refs(n_refs); | |
332 | if (item->tree) | |
333 | refs->ref[i++] = &item->tree->object; | |
334 | for (p = item->parents; p; p = p->next) | |
335 | refs->ref[i++] = &p->item->object; | |
336 | set_object_refs(&item->object, refs); | |
337 | } | |
338 | ||
175785e5 DB |
339 | return 0; |
340 | } | |
341 | ||
bd2c39f5 NP |
342 | int parse_commit(struct commit *item) |
343 | { | |
344 | char type[20]; | |
345 | void *buffer; | |
346 | unsigned long size; | |
347 | int ret; | |
348 | ||
349 | if (item->object.parsed) | |
350 | return 0; | |
351 | buffer = read_sha1_file(item->object.sha1, type, &size); | |
352 | if (!buffer) | |
353 | return error("Could not read %s", | |
354 | sha1_to_hex(item->object.sha1)); | |
355 | if (strcmp(type, commit_type)) { | |
356 | free(buffer); | |
357 | return error("Object %s not a commit", | |
358 | sha1_to_hex(item->object.sha1)); | |
359 | } | |
360 | ret = parse_commit_buffer(item, buffer, size); | |
60ab26de | 361 | if (save_commit_buffer && !ret) { |
3ff1fbbb LT |
362 | item->buffer = buffer; |
363 | return 0; | |
364 | } | |
bd2c39f5 NP |
365 | free(buffer); |
366 | return ret; | |
367 | } | |
368 | ||
ac5155ef | 369 | struct commit_list *commit_list_insert(struct commit *item, struct commit_list **list_p) |
dd97f850 | 370 | { |
812666c8 | 371 | struct commit_list *new_list = xmalloc(sizeof(struct commit_list)); |
dd97f850 DB |
372 | new_list->item = item; |
373 | new_list->next = *list_p; | |
374 | *list_p = new_list; | |
ac5155ef | 375 | return new_list; |
dd97f850 DB |
376 | } |
377 | ||
175785e5 DB |
378 | void free_commit_list(struct commit_list *list) |
379 | { | |
380 | while (list) { | |
381 | struct commit_list *temp = list; | |
382 | list = temp->next; | |
383 | free(temp); | |
384 | } | |
385 | } | |
dd97f850 | 386 | |
f755494c | 387 | struct commit_list * insert_by_date(struct commit *item, struct commit_list **list) |
dd97f850 DB |
388 | { |
389 | struct commit_list **pp = list; | |
390 | struct commit_list *p; | |
391 | while ((p = *pp) != NULL) { | |
392 | if (p->item->date < item->date) { | |
393 | break; | |
394 | } | |
395 | pp = &p->next; | |
396 | } | |
f755494c | 397 | return commit_list_insert(item, pp); |
dd97f850 DB |
398 | } |
399 | ||
400 | ||
401 | void sort_by_date(struct commit_list **list) | |
402 | { | |
403 | struct commit_list *ret = NULL; | |
404 | while (*list) { | |
f755494c | 405 | insert_by_date((*list)->item, &ret); |
dd97f850 DB |
406 | *list = (*list)->next; |
407 | } | |
408 | *list = ret; | |
409 | } | |
410 | ||
58e28af6 DB |
411 | struct commit *pop_most_recent_commit(struct commit_list **list, |
412 | unsigned int mark) | |
dd97f850 DB |
413 | { |
414 | struct commit *ret = (*list)->item; | |
415 | struct commit_list *parents = ret->parents; | |
416 | struct commit_list *old = *list; | |
417 | ||
418 | *list = (*list)->next; | |
419 | free(old); | |
420 | ||
421 | while (parents) { | |
4056c091 | 422 | struct commit *commit = parents->item; |
58e28af6 DB |
423 | parse_commit(commit); |
424 | if (!(commit->object.flags & mark)) { | |
425 | commit->object.flags |= mark; | |
f755494c | 426 | insert_by_date(commit, list); |
4056c091 | 427 | } |
dd97f850 DB |
428 | parents = parents->next; |
429 | } | |
430 | return ret; | |
431 | } | |
e3bc7a3b | 432 | |
f8f9c73c JH |
433 | void clear_commit_marks(struct commit *commit, unsigned int mark) |
434 | { | |
435 | struct commit_list *parents; | |
436 | ||
f8f9c73c | 437 | commit->object.flags &= ~mark; |
58ecf5c1 | 438 | parents = commit->parents; |
f8f9c73c | 439 | while (parents) { |
160b7983 | 440 | struct commit *parent = parents->item; |
58ecf5c1 JH |
441 | |
442 | /* Have we already cleared this? */ | |
443 | if (mark & parent->object.flags) | |
160b7983 | 444 | clear_commit_marks(parent, mark); |
f8f9c73c JH |
445 | parents = parents->next; |
446 | } | |
447 | } | |
448 | ||
e3bc7a3b LT |
449 | /* |
450 | * Generic support for pretty-printing the header | |
451 | */ | |
452 | static int get_one_line(const char *msg, unsigned long len) | |
453 | { | |
454 | int ret = 0; | |
455 | ||
456 | while (len--) { | |
457 | char c = *msg++; | |
684958ae LT |
458 | if (!c) |
459 | break; | |
e3bc7a3b LT |
460 | ret++; |
461 | if (c == '\n') | |
462 | break; | |
e3bc7a3b LT |
463 | } |
464 | return ret; | |
465 | } | |
466 | ||
f7e68b29 JH |
467 | /* High bit set, or ISO-2022-INT */ |
468 | static int non_ascii(int ch) | |
469 | { | |
470 | ch = (ch & 0xff); | |
471 | return ((ch & 0x80) || (ch == 0x1b)); | |
472 | } | |
473 | ||
cdd406e3 JH |
474 | static int is_rfc2047_special(char ch) |
475 | { | |
f7e68b29 | 476 | return (non_ascii(ch) || (ch == '=') || (ch == '?') || (ch == '_')); |
cdd406e3 JH |
477 | } |
478 | ||
f7e68b29 JH |
479 | static int add_rfc2047(char *buf, const char *line, int len, |
480 | const char *encoding) | |
cdd406e3 JH |
481 | { |
482 | char *bp = buf; | |
483 | int i, needquote; | |
f7e68b29 JH |
484 | char q_encoding[128]; |
485 | const char *q_encoding_fmt = "=?%s?q?"; | |
cdd406e3 JH |
486 | |
487 | for (i = needquote = 0; !needquote && i < len; i++) { | |
f7e68b29 JH |
488 | int ch = line[i]; |
489 | if (non_ascii(ch)) | |
cdd406e3 JH |
490 | needquote++; |
491 | if ((i + 1 < len) && | |
492 | (ch == '=' && line[i+1] == '?')) | |
493 | needquote++; | |
494 | } | |
495 | if (!needquote) | |
496 | return sprintf(buf, "%.*s", len, line); | |
497 | ||
f7e68b29 JH |
498 | i = snprintf(q_encoding, sizeof(q_encoding), q_encoding_fmt, encoding); |
499 | if (sizeof(q_encoding) < i) | |
500 | die("Insanely long encoding name %s", encoding); | |
501 | memcpy(bp, q_encoding, i); | |
502 | bp += i; | |
cdd406e3 | 503 | for (i = 0; i < len; i++) { |
0da46771 | 504 | unsigned ch = line[i] & 0xFF; |
cdd406e3 JH |
505 | if (is_rfc2047_special(ch)) { |
506 | sprintf(bp, "=%02X", ch); | |
507 | bp += 3; | |
508 | } | |
509 | else if (ch == ' ') | |
510 | *bp++ = '_'; | |
511 | else | |
512 | *bp++ = ch; | |
513 | } | |
514 | memcpy(bp, "?=", 2); | |
515 | bp += 2; | |
516 | return bp - buf; | |
517 | } | |
518 | ||
3dfb9278 | 519 | static int add_user_info(const char *what, enum cmit_fmt fmt, char *buf, |
f7e68b29 JH |
520 | const char *line, int relative_date, |
521 | const char *encoding) | |
e3bc7a3b LT |
522 | { |
523 | char *date; | |
5de36bfe | 524 | int namelen; |
e3bc7a3b | 525 | unsigned long time; |
000182ea | 526 | int tz, ret; |
ff56fe1c | 527 | const char *filler = " "; |
e3bc7a3b | 528 | |
d87449c5 JH |
529 | if (fmt == CMIT_FMT_ONELINE) |
530 | return 0; | |
e3bc7a3b LT |
531 | date = strchr(line, '>'); |
532 | if (!date) | |
533 | return 0; | |
534 | namelen = ++date - line; | |
535 | time = strtoul(date, &date, 10); | |
536 | tz = strtol(date, NULL, 10); | |
537 | ||
3eefc189 | 538 | if (fmt == CMIT_FMT_EMAIL) { |
cdd406e3 JH |
539 | char *name_tail = strchr(line, '<'); |
540 | int display_name_length; | |
541 | if (!name_tail) | |
542 | return 0; | |
543 | while (line < name_tail && isspace(name_tail[-1])) | |
544 | name_tail--; | |
545 | display_name_length = name_tail - line; | |
3eefc189 | 546 | filler = ""; |
cdd406e3 JH |
547 | strcpy(buf, "From: "); |
548 | ret = strlen(buf); | |
f7e68b29 JH |
549 | ret += add_rfc2047(buf + ret, line, display_name_length, |
550 | encoding); | |
cdd406e3 JH |
551 | memcpy(buf + ret, name_tail, namelen - display_name_length); |
552 | ret += namelen - display_name_length; | |
553 | buf[ret++] = '\n'; | |
554 | } | |
555 | else { | |
556 | ret = sprintf(buf, "%s: %.*s%.*s\n", what, | |
557 | (fmt == CMIT_FMT_FULLER) ? 4 : 0, | |
558 | filler, namelen, line); | |
3eefc189 | 559 | } |
ff56fe1c JH |
560 | switch (fmt) { |
561 | case CMIT_FMT_MEDIUM: | |
3dfb9278 JF |
562 | ret += sprintf(buf + ret, "Date: %s\n", |
563 | show_date(time, tz, relative_date)); | |
ff56fe1c | 564 | break; |
3eefc189 | 565 | case CMIT_FMT_EMAIL: |
2a387043 JH |
566 | ret += sprintf(buf + ret, "Date: %s\n", |
567 | show_rfc2822_date(time, tz)); | |
3eefc189 | 568 | break; |
ff56fe1c | 569 | case CMIT_FMT_FULLER: |
3dfb9278 JF |
570 | ret += sprintf(buf + ret, "%sDate: %s\n", what, |
571 | show_date(time, tz, relative_date)); | |
ff56fe1c JH |
572 | break; |
573 | default: | |
574 | /* notin' */ | |
575 | break; | |
576 | } | |
000182ea LT |
577 | return ret; |
578 | } | |
579 | ||
3eefc189 | 580 | static int is_empty_line(const char *line, int *len_p) |
000182ea | 581 | { |
3eefc189 | 582 | int len = *len_p; |
000182ea LT |
583 | while (len && isspace(line[len-1])) |
584 | len--; | |
3eefc189 | 585 | *len_p = len; |
000182ea | 586 | return !len; |
e3bc7a3b LT |
587 | } |
588 | ||
f2d42275 | 589 | static int add_merge_info(enum cmit_fmt fmt, char *buf, const struct commit *commit, int abbrev) |
28342a5d | 590 | { |
f2d42275 JH |
591 | struct commit_list *parent = commit->parents; |
592 | int offset; | |
d87449c5 | 593 | |
3eefc189 JH |
594 | if ((fmt == CMIT_FMT_ONELINE) || (fmt == CMIT_FMT_EMAIL) || |
595 | !parent || !parent->next) | |
f2d42275 JH |
596 | return 0; |
597 | ||
598 | offset = sprintf(buf, "Merge:"); | |
599 | ||
600 | while (parent) { | |
601 | struct commit *p = parent->item; | |
14763e7b EW |
602 | const char *hex = NULL; |
603 | const char *dots; | |
604 | if (abbrev) | |
605 | hex = find_unique_abbrev(p->object.sha1, abbrev); | |
606 | if (!hex) | |
607 | hex = sha1_to_hex(p->object.sha1); | |
608 | dots = (abbrev && strlen(hex) != 40) ? "..." : ""; | |
f2d42275 JH |
609 | parent = parent->next; |
610 | ||
6bfb27a0 | 611 | offset += sprintf(buf + offset, " %s%s", hex, dots); |
28342a5d | 612 | } |
f2d42275 | 613 | buf[offset++] = '\n'; |
28342a5d LT |
614 | return offset; |
615 | } | |
616 | ||
52883fbd JH |
617 | static char *get_header(const struct commit *commit, const char *key) |
618 | { | |
619 | int key_len = strlen(key); | |
620 | const char *line = commit->buffer; | |
621 | ||
622 | for (;;) { | |
623 | const char *eol = strchr(line, '\n'), *next; | |
624 | ||
625 | if (line == eol) | |
626 | return NULL; | |
627 | if (!eol) { | |
628 | eol = line + strlen(line); | |
629 | next = NULL; | |
630 | } else | |
631 | next = eol + 1; | |
632 | if (!strncmp(line, key, key_len) && line[key_len] == ' ') { | |
633 | int len = eol - line - key_len; | |
634 | char *ret = xmalloc(len); | |
635 | memcpy(ret, line + key_len + 1, len - 1); | |
636 | ret[len - 1] = '\0'; | |
637 | return ret; | |
638 | } | |
639 | line = next; | |
640 | } | |
641 | } | |
642 | ||
53af9816 JH |
643 | static char *replace_encoding_header(char *buf, char *encoding) |
644 | { | |
645 | char *encoding_header = strstr(buf, "\nencoding "); | |
646 | char *end_of_encoding_header; | |
647 | int encoding_header_pos; | |
648 | int encoding_header_len; | |
649 | int new_len; | |
650 | int need_len; | |
651 | int buflen = strlen(buf) + 1; | |
652 | ||
653 | if (!encoding_header) | |
654 | return buf; /* should not happen but be defensive */ | |
655 | encoding_header++; | |
656 | end_of_encoding_header = strchr(encoding_header, '\n'); | |
657 | if (!end_of_encoding_header) | |
658 | return buf; /* should not happen but be defensive */ | |
659 | end_of_encoding_header++; | |
660 | ||
661 | encoding_header_len = end_of_encoding_header - encoding_header; | |
662 | encoding_header_pos = encoding_header - buf; | |
663 | ||
664 | if (is_encoding_utf8(encoding)) { | |
665 | /* we have re-coded to UTF-8; drop the header */ | |
666 | memmove(encoding_header, end_of_encoding_header, | |
667 | buflen - (encoding_header_pos + encoding_header_len)); | |
668 | return buf; | |
669 | } | |
670 | new_len = strlen(encoding); | |
671 | need_len = new_len + strlen("encoding \n"); | |
672 | if (encoding_header_len < need_len) { | |
673 | buf = xrealloc(buf, buflen + (need_len - encoding_header_len)); | |
674 | encoding_header = buf + encoding_header_pos; | |
675 | end_of_encoding_header = encoding_header + encoding_header_len; | |
676 | } | |
677 | memmove(end_of_encoding_header + (need_len - encoding_header_len), | |
678 | end_of_encoding_header, | |
679 | buflen - (encoding_header_pos + encoding_header_len)); | |
680 | memcpy(encoding_header + 9, encoding, strlen(encoding)); | |
681 | encoding_header[9 + new_len] = '\n'; | |
682 | return buf; | |
683 | } | |
684 | ||
f7e68b29 JH |
685 | static char *logmsg_reencode(const struct commit *commit, |
686 | char *output_encoding) | |
52883fbd | 687 | { |
d2c11a38 | 688 | char *encoding; |
52883fbd | 689 | char *out; |
f7e68b29 | 690 | char *utf8 = "utf-8"; |
52883fbd | 691 | |
f7e68b29 | 692 | if (!*output_encoding) |
52883fbd | 693 | return NULL; |
d2c11a38 | 694 | encoding = get_header(commit, "encoding"); |
e90068a9 | 695 | if (!encoding) |
f7e68b29 | 696 | encoding = utf8; |
e90068a9 JH |
697 | if (!strcmp(encoding, output_encoding)) |
698 | out = strdup(commit->buffer); | |
699 | else | |
700 | out = reencode_string(commit->buffer, | |
701 | output_encoding, encoding); | |
53af9816 JH |
702 | if (out) |
703 | out = replace_encoding_header(out, output_encoding); | |
704 | ||
f7e68b29 JH |
705 | if (encoding != utf8) |
706 | free(encoding); | |
52883fbd JH |
707 | if (!out) |
708 | return NULL; | |
709 | return out; | |
710 | } | |
711 | ||
712 | unsigned long pretty_print_commit(enum cmit_fmt fmt, | |
713 | const struct commit *commit, | |
714 | unsigned long len, | |
715 | char *buf, unsigned long space, | |
3dfb9278 | 716 | int abbrev, const char *subject, |
52883fbd JH |
717 | const char *after_subject, |
718 | int relative_date) | |
e3bc7a3b | 719 | { |
f3a47405 | 720 | int hdr = 1, body = 0, seen_title = 0; |
e3bc7a3b | 721 | unsigned long offset = 0; |
3eefc189 | 722 | int indent = 4; |
f2d42275 | 723 | int parents_shown = 0; |
3815f423 | 724 | const char *msg = commit->buffer; |
c831da66 | 725 | int plain_non_ascii = 0; |
f7e68b29 JH |
726 | char *reencoded; |
727 | char *encoding; | |
52883fbd | 728 | |
f7e68b29 JH |
729 | encoding = (git_log_output_encoding |
730 | ? git_log_output_encoding | |
731 | : git_commit_encoding); | |
732 | if (!encoding) | |
733 | encoding = "utf-8"; | |
734 | reencoded = logmsg_reencode(commit, encoding); | |
d2c11a38 JH |
735 | if (reencoded) |
736 | msg = reencoded; | |
3eefc189 | 737 | |
3eefc189 JH |
738 | if (fmt == CMIT_FMT_ONELINE || fmt == CMIT_FMT_EMAIL) |
739 | indent = 0; | |
e3bc7a3b | 740 | |
c831da66 JH |
741 | /* After-subject is used to pass in Content-Type: multipart |
742 | * MIME header; in that case we do not have to do the | |
743 | * plaintext content type even if the commit message has | |
744 | * non 7-bit ASCII character. Otherwise, check if we need | |
745 | * to say this is not a 7-bit ASCII. | |
746 | */ | |
747 | if (fmt == CMIT_FMT_EMAIL && !after_subject) { | |
0da46771 JH |
748 | int i, ch, in_body; |
749 | ||
750 | for (in_body = i = 0; (ch = msg[i]) && i < len; i++) { | |
751 | if (!in_body) { | |
752 | /* author could be non 7-bit ASCII but | |
d2c11a38 | 753 | * the log may be so; skip over the |
0da46771 JH |
754 | * header part first. |
755 | */ | |
756 | if (ch == '\n' && | |
757 | i + 1 < len && msg[i+1] == '\n') | |
758 | in_body = 1; | |
759 | } | |
f7e68b29 | 760 | else if (non_ascii(ch)) { |
c831da66 | 761 | plain_non_ascii = 1; |
0da46771 JH |
762 | break; |
763 | } | |
764 | } | |
c831da66 JH |
765 | } |
766 | ||
e3bc7a3b LT |
767 | for (;;) { |
768 | const char *line = msg; | |
769 | int linelen = get_one_line(msg, len); | |
770 | ||
771 | if (!linelen) | |
772 | break; | |
773 | ||
774 | /* | |
775 | * We want some slop for indentation and a possible | |
776 | * final "...". Thus the "+ 20". | |
777 | */ | |
778 | if (offset + linelen + 20 > space) { | |
779 | memcpy(buf + offset, " ...\n", 8); | |
780 | offset += 8; | |
781 | break; | |
782 | } | |
783 | ||
784 | msg += linelen; | |
785 | len -= linelen; | |
e3bc7a3b | 786 | if (hdr) { |
000182ea LT |
787 | if (linelen == 1) { |
788 | hdr = 0; | |
3eefc189 | 789 | if ((fmt != CMIT_FMT_ONELINE) && !subject) |
d87449c5 | 790 | buf[offset++] = '\n'; |
000182ea LT |
791 | continue; |
792 | } | |
793 | if (fmt == CMIT_FMT_RAW) { | |
794 | memcpy(buf + offset, line, linelen); | |
795 | offset += linelen; | |
796 | continue; | |
797 | } | |
28342a5d LT |
798 | if (!memcmp(line, "parent ", 7)) { |
799 | if (linelen != 48) | |
800 | die("bad parent line in commit"); | |
f2d42275 | 801 | continue; |
28342a5d | 802 | } |
ff56fe1c | 803 | |
f2d42275 JH |
804 | if (!parents_shown) { |
805 | offset += add_merge_info(fmt, buf + offset, | |
806 | commit, abbrev); | |
807 | parents_shown = 1; | |
808 | continue; | |
809 | } | |
ff56fe1c JH |
810 | /* |
811 | * MEDIUM == DEFAULT shows only author with dates. | |
812 | * FULL shows both authors but not dates. | |
813 | * FULLER shows both authors and dates. | |
814 | */ | |
e3bc7a3b | 815 | if (!memcmp(line, "author ", 7)) |
ff56fe1c JH |
816 | offset += add_user_info("Author", fmt, |
817 | buf + offset, | |
3dfb9278 | 818 | line + 7, |
f7e68b29 JH |
819 | relative_date, |
820 | encoding); | |
ff56fe1c JH |
821 | if (!memcmp(line, "committer ", 10) && |
822 | (fmt == CMIT_FMT_FULL || fmt == CMIT_FMT_FULLER)) | |
823 | offset += add_user_info("Commit", fmt, | |
824 | buf + offset, | |
3dfb9278 | 825 | line + 10, |
f7e68b29 JH |
826 | relative_date, |
827 | encoding); | |
e3bc7a3b LT |
828 | continue; |
829 | } | |
000182ea | 830 | |
19b3bd3e RS |
831 | if (!subject) |
832 | body = 1; | |
833 | ||
3eefc189 | 834 | if (is_empty_line(line, &linelen)) { |
f3a47405 LH |
835 | if (!seen_title) |
836 | continue; | |
000182ea LT |
837 | if (!body) |
838 | continue; | |
3eefc189 JH |
839 | if (subject) |
840 | continue; | |
000182ea LT |
841 | if (fmt == CMIT_FMT_SHORT) |
842 | break; | |
000182ea | 843 | } |
d87449c5 | 844 | |
f3a47405 | 845 | seen_title = 1; |
3eefc189 | 846 | if (subject) { |
53f420ef JH |
847 | int slen = strlen(subject); |
848 | memcpy(buf + offset, subject, slen); | |
849 | offset += slen; | |
f7e68b29 JH |
850 | offset += add_rfc2047(buf + offset, line, linelen, |
851 | encoding); | |
cdd406e3 JH |
852 | } |
853 | else { | |
854 | memset(buf + offset, ' ', indent); | |
855 | memcpy(buf + offset + indent, line, linelen); | |
856 | offset += linelen + indent; | |
3eefc189 | 857 | } |
3eefc189 | 858 | buf[offset++] = '\n'; |
d87449c5 JH |
859 | if (fmt == CMIT_FMT_ONELINE) |
860 | break; | |
c831da66 | 861 | if (subject && plain_non_ascii) { |
f7e68b29 JH |
862 | int sz; |
863 | char header[512]; | |
864 | const char *header_fmt = | |
865 | "Content-Type: text/plain; charset=%s\n" | |
cdd406e3 | 866 | "Content-Transfer-Encoding: 8bit\n"; |
f7e68b29 JH |
867 | sz = snprintf(header, sizeof(header), header_fmt, |
868 | encoding); | |
869 | if (sizeof(header) < sz) | |
870 | die("Encoding name %s too long", encoding); | |
871 | memcpy(buf + offset, header, sz); | |
872 | offset += sz; | |
cdd406e3 | 873 | } |
698ce6f8 JS |
874 | if (after_subject) { |
875 | int slen = strlen(after_subject); | |
876 | if (slen > space - offset - 1) | |
877 | slen = space - offset - 1; | |
878 | memcpy(buf + offset, after_subject, slen); | |
879 | offset += slen; | |
880 | after_subject = NULL; | |
881 | } | |
3eefc189 | 882 | subject = NULL; |
d87449c5 | 883 | } |
40c2fe00 LT |
884 | while (offset && isspace(buf[offset-1])) |
885 | offset--; | |
886 | /* Make sure there is an EOLN for the non-oneline case */ | |
887 | if (fmt != CMIT_FMT_ONELINE) | |
888 | buf[offset++] = '\n'; | |
19b3bd3e RS |
889 | /* |
890 | * make sure there is another EOLN to separate the headers from whatever | |
891 | * body the caller appends if we haven't already written a body | |
892 | */ | |
893 | if (fmt == CMIT_FMT_EMAIL && !body) | |
894 | buf[offset++] = '\n'; | |
e3bc7a3b | 895 | buf[offset] = '\0'; |
52883fbd JH |
896 | |
897 | free(reencoded); | |
e3bc7a3b LT |
898 | return offset; |
899 | } | |
a3437b8c JS |
900 | |
901 | struct commit *pop_commit(struct commit_list **stack) | |
902 | { | |
903 | struct commit_list *top = *stack; | |
904 | struct commit *item = top ? top->item : NULL; | |
905 | ||
906 | if (top) { | |
907 | *stack = top->next; | |
908 | free(top); | |
909 | } | |
910 | return item; | |
911 | } | |
912 | ||
913 | int count_parents(struct commit * commit) | |
914 | { | |
96f1e58f | 915 | int count; |
a3437b8c | 916 | struct commit_list * parents = commit->parents; |
96f1e58f DR |
917 | for (count = 0; parents; parents = parents->next,count++) |
918 | ; | |
a3437b8c JS |
919 | return count; |
920 | } | |
921 | ||
6b6dcfc2 FK |
922 | void topo_sort_default_setter(struct commit *c, void *data) |
923 | { | |
d3ff6f55 | 924 | c->util = data; |
6b6dcfc2 FK |
925 | } |
926 | ||
927 | void *topo_sort_default_getter(struct commit *c) | |
928 | { | |
d3ff6f55 | 929 | return c->util; |
6b6dcfc2 FK |
930 | } |
931 | ||
ab580ace JS |
932 | /* |
933 | * Performs an in-place topological sort on the list supplied. | |
934 | */ | |
4c8725f1 | 935 | void sort_in_topological_order(struct commit_list ** list, int lifo) |
6b6dcfc2 FK |
936 | { |
937 | sort_in_topological_order_fn(list, lifo, topo_sort_default_setter, | |
938 | topo_sort_default_getter); | |
939 | } | |
940 | ||
941 | void sort_in_topological_order_fn(struct commit_list ** list, int lifo, | |
942 | topo_sort_set_fn_t setter, | |
943 | topo_sort_get_fn_t getter) | |
ab580ace JS |
944 | { |
945 | struct commit_list * next = *list; | |
2ed02887 | 946 | struct commit_list * work = NULL, **insert; |
ab580ace JS |
947 | struct commit_list ** pptr = list; |
948 | struct sort_node * nodes; | |
949 | struct sort_node * next_nodes; | |
950 | int count = 0; | |
951 | ||
952 | /* determine the size of the list */ | |
953 | while (next) { | |
954 | next = next->next; | |
955 | count++; | |
956 | } | |
7d6fb370 EW |
957 | |
958 | if (!count) | |
959 | return; | |
ab580ace JS |
960 | /* allocate an array to help sort the list */ |
961 | nodes = xcalloc(count, sizeof(*nodes)); | |
962 | /* link the list to the array */ | |
963 | next_nodes = nodes; | |
964 | next=*list; | |
965 | while (next) { | |
966 | next_nodes->list_item = next; | |
6b6dcfc2 | 967 | setter(next->item, next_nodes); |
ab580ace JS |
968 | next_nodes++; |
969 | next = next->next; | |
970 | } | |
971 | /* update the indegree */ | |
972 | next=*list; | |
973 | while (next) { | |
974 | struct commit_list * parents = next->item->parents; | |
975 | while (parents) { | |
976 | struct commit * parent=parents->item; | |
6b6dcfc2 FK |
977 | struct sort_node * pn = (struct sort_node *) getter(parent); |
978 | ||
ab580ace JS |
979 | if (pn) |
980 | pn->indegree++; | |
981 | parents=parents->next; | |
982 | } | |
983 | next=next->next; | |
984 | } | |
985 | /* | |
986 | * find the tips | |
987 | * | |
988 | * tips are nodes not reachable from any other node in the list | |
989 | * | |
990 | * the tips serve as a starting set for the work queue. | |
991 | */ | |
992 | next=*list; | |
2ed02887 | 993 | insert = &work; |
ab580ace | 994 | while (next) { |
6b6dcfc2 | 995 | struct sort_node * node = (struct sort_node *) getter(next->item); |
ab580ace JS |
996 | |
997 | if (node->indegree == 0) { | |
2ed02887 | 998 | insert = &commit_list_insert(next->item, insert)->next; |
ab580ace JS |
999 | } |
1000 | next=next->next; | |
1001 | } | |
4c8725f1 | 1002 | |
ab580ace | 1003 | /* process the list in topological order */ |
4c8725f1 JH |
1004 | if (!lifo) |
1005 | sort_by_date(&work); | |
ab580ace JS |
1006 | while (work) { |
1007 | struct commit * work_item = pop_commit(&work); | |
6b6dcfc2 | 1008 | struct sort_node * work_node = (struct sort_node *) getter(work_item); |
ab580ace JS |
1009 | struct commit_list * parents = work_item->parents; |
1010 | ||
1011 | while (parents) { | |
1012 | struct commit * parent=parents->item; | |
6b6dcfc2 FK |
1013 | struct sort_node * pn = (struct sort_node *) getter(parent); |
1014 | ||
ab580ace | 1015 | if (pn) { |
6b6dcfc2 | 1016 | /* |
ab580ace JS |
1017 | * parents are only enqueued for emission |
1018 | * when all their children have been emitted thereby | |
1019 | * guaranteeing topological order. | |
1020 | */ | |
1021 | pn->indegree--; | |
4c8725f1 JH |
1022 | if (!pn->indegree) { |
1023 | if (!lifo) | |
1024 | insert_by_date(parent, &work); | |
1025 | else | |
1026 | commit_list_insert(parent, &work); | |
1027 | } | |
ab580ace JS |
1028 | } |
1029 | parents=parents->next; | |
1030 | } | |
1031 | /* | |
1032 | * work_item is a commit all of whose children | |
1033 | * have already been emitted. we can emit it now. | |
1034 | */ | |
1035 | *pptr = work_node->list_item; | |
1036 | pptr = &(*pptr)->next; | |
1037 | *pptr = NULL; | |
6b6dcfc2 | 1038 | setter(work_item, NULL); |
ab580ace JS |
1039 | } |
1040 | free(nodes); | |
1041 | } | |
7c6f8aaf | 1042 | |
1295228d | 1043 | /* merge-base stuff */ |
7c6f8aaf | 1044 | |
577ed5c2 JH |
1045 | /* bits #0..15 in revision.h */ |
1046 | #define PARENT1 (1u<<16) | |
1047 | #define PARENT2 (1u<<17) | |
1048 | #define STALE (1u<<18) | |
1049 | #define RESULT (1u<<19) | |
7c6f8aaf | 1050 | |
1295228d JH |
1051 | static const unsigned all_flags = (PARENT1 | PARENT2 | STALE | RESULT); |
1052 | ||
7c6f8aaf JS |
1053 | static struct commit *interesting(struct commit_list *list) |
1054 | { | |
1055 | while (list) { | |
1056 | struct commit *commit = list->item; | |
1057 | list = list->next; | |
542ccefe | 1058 | if (commit->object.flags & STALE) |
7c6f8aaf JS |
1059 | continue; |
1060 | return commit; | |
1061 | } | |
1062 | return NULL; | |
1063 | } | |
1064 | ||
f3249438 | 1065 | static struct commit_list *merge_bases(struct commit *one, struct commit *two) |
7c6f8aaf JS |
1066 | { |
1067 | struct commit_list *list = NULL; | |
1068 | struct commit_list *result = NULL; | |
7c6f8aaf | 1069 | |
f3249438 JH |
1070 | if (one == two) |
1071 | /* We do not mark this even with RESULT so we do not | |
1072 | * have to clean it up. | |
1073 | */ | |
1074 | return commit_list_insert(one, &result); | |
7c6f8aaf | 1075 | |
f3249438 JH |
1076 | parse_commit(one); |
1077 | parse_commit(two); | |
7c6f8aaf | 1078 | |
f3249438 JH |
1079 | one->object.flags |= PARENT1; |
1080 | two->object.flags |= PARENT2; | |
1081 | insert_by_date(one, &list); | |
1082 | insert_by_date(two, &list); | |
7c6f8aaf JS |
1083 | |
1084 | while (interesting(list)) { | |
f3249438 | 1085 | struct commit *commit; |
7c6f8aaf | 1086 | struct commit_list *parents; |
f3249438 JH |
1087 | struct commit_list *n; |
1088 | int flags; | |
7c6f8aaf | 1089 | |
f3249438 JH |
1090 | commit = list->item; |
1091 | n = list->next; | |
1092 | free(list); | |
1093 | list = n; | |
7c6f8aaf | 1094 | |
f3249438 JH |
1095 | flags = commit->object.flags & (PARENT1 | PARENT2 | STALE); |
1096 | if (flags == (PARENT1 | PARENT2)) { | |
1097 | if (!(commit->object.flags & RESULT)) { | |
1098 | commit->object.flags |= RESULT; | |
1099 | insert_by_date(commit, &result); | |
1100 | } | |
542ccefe JH |
1101 | /* Mark parents of a found merge stale */ |
1102 | flags |= STALE; | |
7c6f8aaf JS |
1103 | } |
1104 | parents = commit->parents; | |
1105 | while (parents) { | |
1106 | struct commit *p = parents->item; | |
1107 | parents = parents->next; | |
1108 | if ((p->object.flags & flags) == flags) | |
1109 | continue; | |
1110 | parse_commit(p); | |
1111 | p->object.flags |= flags; | |
1112 | insert_by_date(p, &list); | |
1113 | } | |
1114 | } | |
1115 | ||
f3249438 | 1116 | /* Clean up the result to remove stale ones */ |
1295228d | 1117 | free_commit_list(list); |
f3249438 JH |
1118 | list = result; result = NULL; |
1119 | while (list) { | |
1120 | struct commit_list *n = list->next; | |
1121 | if (!(list->item->object.flags & STALE)) | |
1122 | insert_by_date(list->item, &result); | |
1123 | free(list); | |
1124 | list = n; | |
1125 | } | |
1126 | return result; | |
1127 | } | |
7c6f8aaf | 1128 | |
f3249438 JH |
1129 | struct commit_list *get_merge_bases(struct commit *one, |
1130 | struct commit *two, | |
1131 | int cleanup) | |
1132 | { | |
f3249438 JH |
1133 | struct commit_list *list; |
1134 | struct commit **rslt; | |
1135 | struct commit_list *result; | |
1136 | int cnt, i, j; | |
1137 | ||
1138 | result = merge_bases(one, two); | |
1139 | if (one == two) | |
1140 | return result; | |
1141 | if (!result || !result->next) { | |
1142 | if (cleanup) { | |
1143 | clear_commit_marks(one, all_flags); | |
1144 | clear_commit_marks(two, all_flags); | |
7c6f8aaf | 1145 | } |
f3249438 | 1146 | return result; |
7c6f8aaf JS |
1147 | } |
1148 | ||
f3249438 JH |
1149 | /* There are more than one */ |
1150 | cnt = 0; | |
1151 | list = result; | |
1152 | while (list) { | |
1153 | list = list->next; | |
1154 | cnt++; | |
1155 | } | |
1156 | rslt = xcalloc(cnt, sizeof(*rslt)); | |
1157 | for (list = result, i = 0; list; list = list->next) | |
1158 | rslt[i++] = list->item; | |
1159 | free_commit_list(result); | |
1160 | ||
1161 | clear_commit_marks(one, all_flags); | |
1162 | clear_commit_marks(two, all_flags); | |
1163 | for (i = 0; i < cnt - 1; i++) { | |
1164 | for (j = i+1; j < cnt; j++) { | |
1165 | if (!rslt[i] || !rslt[j]) | |
1166 | continue; | |
1167 | result = merge_bases(rslt[i], rslt[j]); | |
1168 | clear_commit_marks(rslt[i], all_flags); | |
1169 | clear_commit_marks(rslt[j], all_flags); | |
1170 | for (list = result; list; list = list->next) { | |
1171 | if (rslt[i] == list->item) | |
1172 | rslt[i] = NULL; | |
1173 | if (rslt[j] == list->item) | |
1174 | rslt[j] = NULL; | |
1175 | } | |
1176 | } | |
58ecf5c1 | 1177 | } |
7c6f8aaf | 1178 | |
f3249438 JH |
1179 | /* Surviving ones in rslt[] are the independent results */ |
1180 | result = NULL; | |
1181 | for (i = 0; i < cnt; i++) { | |
1182 | if (rslt[i]) | |
1183 | insert_by_date(rslt[i], &result); | |
1184 | } | |
1185 | free(rslt); | |
7c6f8aaf JS |
1186 | return result; |
1187 | } | |
2ecd2bbc JH |
1188 | |
1189 | int in_merge_bases(struct commit *rev1, struct commit *rev2) | |
1190 | { | |
1191 | struct commit_list *bases, *b; | |
1192 | int ret = 0; | |
1193 | ||
1194 | bases = get_merge_bases(rev1, rev2, 1); | |
1195 | for (b = bases; b; b = b->next) { | |
1196 | if (!hashcmp(rev1->object.sha1, b->item->object.sha1)) { | |
1197 | ret = 1; | |
1198 | break; | |
1199 | } | |
1200 | } | |
1201 | ||
1202 | free_commit_list(bases); | |
1203 | return ret; | |
1204 | } |