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1 | /* | |
2 | * "git fast-export" builtin command | |
3 | * | |
4 | * Copyright (C) 2007 Johannes E. Schindelin | |
5 | */ | |
6 | #include "builtin.h" | |
7 | #include "cache.h" | |
8 | #include "commit.h" | |
9 | #include "object.h" | |
10 | #include "tag.h" | |
11 | #include "diff.h" | |
12 | #include "diffcore.h" | |
13 | #include "log-tree.h" | |
14 | #include "revision.h" | |
15 | #include "decorate.h" | |
16 | #include "string-list.h" | |
17 | #include "utf8.h" | |
18 | #include "parse-options.h" | |
19 | ||
20 | static const char *fast_export_usage[] = { | |
21 | "git fast-export [rev-list-opts]", | |
22 | NULL | |
23 | }; | |
24 | ||
25 | static int progress; | |
26 | static enum { ABORT, VERBATIM, WARN, STRIP } signed_tag_mode = ABORT; | |
27 | static enum { ERROR, DROP, REWRITE } tag_of_filtered_mode = ABORT; | |
28 | static int fake_missing_tagger; | |
29 | static int no_data; | |
30 | static int full_tree; | |
31 | ||
32 | static int parse_opt_signed_tag_mode(const struct option *opt, | |
33 | const char *arg, int unset) | |
34 | { | |
35 | if (unset || !strcmp(arg, "abort")) | |
36 | signed_tag_mode = ABORT; | |
37 | else if (!strcmp(arg, "verbatim") || !strcmp(arg, "ignore")) | |
38 | signed_tag_mode = VERBATIM; | |
39 | else if (!strcmp(arg, "warn")) | |
40 | signed_tag_mode = WARN; | |
41 | else if (!strcmp(arg, "strip")) | |
42 | signed_tag_mode = STRIP; | |
43 | else | |
44 | return error("Unknown signed-tag mode: %s", arg); | |
45 | return 0; | |
46 | } | |
47 | ||
48 | static int parse_opt_tag_of_filtered_mode(const struct option *opt, | |
49 | const char *arg, int unset) | |
50 | { | |
51 | if (unset || !strcmp(arg, "abort")) | |
52 | tag_of_filtered_mode = ABORT; | |
53 | else if (!strcmp(arg, "drop")) | |
54 | tag_of_filtered_mode = DROP; | |
55 | else if (!strcmp(arg, "rewrite")) | |
56 | tag_of_filtered_mode = REWRITE; | |
57 | else | |
58 | return error("Unknown tag-of-filtered mode: %s", arg); | |
59 | return 0; | |
60 | } | |
61 | ||
62 | static struct decoration idnums; | |
63 | static uint32_t last_idnum; | |
64 | ||
65 | static int has_unshown_parent(struct commit *commit) | |
66 | { | |
67 | struct commit_list *parent; | |
68 | ||
69 | for (parent = commit->parents; parent; parent = parent->next) | |
70 | if (!(parent->item->object.flags & SHOWN) && | |
71 | !(parent->item->object.flags & UNINTERESTING)) | |
72 | return 1; | |
73 | return 0; | |
74 | } | |
75 | ||
76 | /* Since intptr_t is C99, we do not use it here */ | |
77 | static inline uint32_t *mark_to_ptr(uint32_t mark) | |
78 | { | |
79 | return ((uint32_t *)NULL) + mark; | |
80 | } | |
81 | ||
82 | static inline uint32_t ptr_to_mark(void * mark) | |
83 | { | |
84 | return (uint32_t *)mark - (uint32_t *)NULL; | |
85 | } | |
86 | ||
87 | static inline void mark_object(struct object *object, uint32_t mark) | |
88 | { | |
89 | add_decoration(&idnums, object, mark_to_ptr(mark)); | |
90 | } | |
91 | ||
92 | static inline void mark_next_object(struct object *object) | |
93 | { | |
94 | mark_object(object, ++last_idnum); | |
95 | } | |
96 | ||
97 | static int get_object_mark(struct object *object) | |
98 | { | |
99 | void *decoration = lookup_decoration(&idnums, object); | |
100 | if (!decoration) | |
101 | return 0; | |
102 | return ptr_to_mark(decoration); | |
103 | } | |
104 | ||
105 | static void show_progress(void) | |
106 | { | |
107 | static int counter = 0; | |
108 | if (!progress) | |
109 | return; | |
110 | if ((++counter % progress) == 0) | |
111 | printf("progress %d objects\n", counter); | |
112 | } | |
113 | ||
114 | static void handle_object(const unsigned char *sha1) | |
115 | { | |
116 | unsigned long size; | |
117 | enum object_type type; | |
118 | char *buf; | |
119 | struct object *object; | |
120 | ||
121 | if (no_data) | |
122 | return; | |
123 | ||
124 | if (is_null_sha1(sha1)) | |
125 | return; | |
126 | ||
127 | object = parse_object(sha1); | |
128 | if (!object) | |
129 | die ("Could not read blob %s", sha1_to_hex(sha1)); | |
130 | ||
131 | if (object->flags & SHOWN) | |
132 | return; | |
133 | ||
134 | buf = read_sha1_file(sha1, &type, &size); | |
135 | if (!buf) | |
136 | die ("Could not read blob %s", sha1_to_hex(sha1)); | |
137 | ||
138 | mark_next_object(object); | |
139 | ||
140 | printf("blob\nmark :%"PRIu32"\ndata %lu\n", last_idnum, size); | |
141 | if (size && fwrite(buf, size, 1, stdout) != 1) | |
142 | die_errno ("Could not write blob '%s'", sha1_to_hex(sha1)); | |
143 | printf("\n"); | |
144 | ||
145 | show_progress(); | |
146 | ||
147 | object->flags |= SHOWN; | |
148 | free(buf); | |
149 | } | |
150 | ||
151 | static int depth_first(const void *a_, const void *b_) | |
152 | { | |
153 | const struct diff_filepair *a = *((const struct diff_filepair **)a_); | |
154 | const struct diff_filepair *b = *((const struct diff_filepair **)b_); | |
155 | const char *name_a, *name_b; | |
156 | int len_a, len_b, len; | |
157 | int cmp; | |
158 | ||
159 | name_a = a->one ? a->one->path : a->two->path; | |
160 | name_b = b->one ? b->one->path : b->two->path; | |
161 | ||
162 | len_a = strlen(name_a); | |
163 | len_b = strlen(name_b); | |
164 | len = (len_a < len_b) ? len_a : len_b; | |
165 | ||
166 | /* strcmp will sort 'd' before 'd/e', we want 'd/e' before 'd' */ | |
167 | cmp = memcmp(name_a, name_b, len); | |
168 | if (cmp) | |
169 | return cmp; | |
170 | cmp = len_b - len_a; | |
171 | if (cmp) | |
172 | return cmp; | |
173 | /* | |
174 | * Move 'R'ename entries last so that all references of the file | |
175 | * appear in the output before it is renamed (e.g., when a file | |
176 | * was copied and renamed in the same commit). | |
177 | */ | |
178 | return (a->status == 'R') - (b->status == 'R'); | |
179 | } | |
180 | ||
181 | static void show_filemodify(struct diff_queue_struct *q, | |
182 | struct diff_options *options, void *data) | |
183 | { | |
184 | int i; | |
185 | ||
186 | /* | |
187 | * Handle files below a directory first, in case they are all deleted | |
188 | * and the directory changes to a file or symlink. | |
189 | */ | |
190 | qsort(q->queue, q->nr, sizeof(q->queue[0]), depth_first); | |
191 | ||
192 | for (i = 0; i < q->nr; i++) { | |
193 | struct diff_filespec *ospec = q->queue[i]->one; | |
194 | struct diff_filespec *spec = q->queue[i]->two; | |
195 | ||
196 | switch (q->queue[i]->status) { | |
197 | case DIFF_STATUS_DELETED: | |
198 | printf("D %s\n", spec->path); | |
199 | break; | |
200 | ||
201 | case DIFF_STATUS_COPIED: | |
202 | case DIFF_STATUS_RENAMED: | |
203 | printf("%c \"%s\" \"%s\"\n", q->queue[i]->status, | |
204 | ospec->path, spec->path); | |
205 | ||
206 | if (!hashcmp(ospec->sha1, spec->sha1) && | |
207 | ospec->mode == spec->mode) | |
208 | break; | |
209 | /* fallthrough */ | |
210 | ||
211 | case DIFF_STATUS_TYPE_CHANGED: | |
212 | case DIFF_STATUS_MODIFIED: | |
213 | case DIFF_STATUS_ADDED: | |
214 | /* | |
215 | * Links refer to objects in another repositories; | |
216 | * output the SHA-1 verbatim. | |
217 | */ | |
218 | if (no_data || S_ISGITLINK(spec->mode)) | |
219 | printf("M %06o %s %s\n", spec->mode, | |
220 | sha1_to_hex(spec->sha1), spec->path); | |
221 | else { | |
222 | struct object *object = lookup_object(spec->sha1); | |
223 | printf("M %06o :%d %s\n", spec->mode, | |
224 | get_object_mark(object), spec->path); | |
225 | } | |
226 | break; | |
227 | ||
228 | default: | |
229 | die("Unexpected comparison status '%c' for %s, %s", | |
230 | q->queue[i]->status, | |
231 | ospec->path ? ospec->path : "none", | |
232 | spec->path ? spec->path : "none"); | |
233 | } | |
234 | } | |
235 | } | |
236 | ||
237 | static const char *find_encoding(const char *begin, const char *end) | |
238 | { | |
239 | const char *needle = "\nencoding "; | |
240 | char *bol, *eol; | |
241 | ||
242 | bol = memmem(begin, end ? end - begin : strlen(begin), | |
243 | needle, strlen(needle)); | |
244 | if (!bol) | |
245 | return git_commit_encoding; | |
246 | bol += strlen(needle); | |
247 | eol = strchrnul(bol, '\n'); | |
248 | *eol = '\0'; | |
249 | return bol; | |
250 | } | |
251 | ||
252 | static void handle_commit(struct commit *commit, struct rev_info *rev) | |
253 | { | |
254 | int saved_output_format = rev->diffopt.output_format; | |
255 | const char *author, *author_end, *committer, *committer_end; | |
256 | const char *encoding, *message; | |
257 | char *reencoded = NULL; | |
258 | struct commit_list *p; | |
259 | int i; | |
260 | ||
261 | rev->diffopt.output_format = DIFF_FORMAT_CALLBACK; | |
262 | ||
263 | parse_commit(commit); | |
264 | author = strstr(commit->buffer, "\nauthor "); | |
265 | if (!author) | |
266 | die ("Could not find author in commit %s", | |
267 | sha1_to_hex(commit->object.sha1)); | |
268 | author++; | |
269 | author_end = strchrnul(author, '\n'); | |
270 | committer = strstr(author_end, "\ncommitter "); | |
271 | if (!committer) | |
272 | die ("Could not find committer in commit %s", | |
273 | sha1_to_hex(commit->object.sha1)); | |
274 | committer++; | |
275 | committer_end = strchrnul(committer, '\n'); | |
276 | message = strstr(committer_end, "\n\n"); | |
277 | encoding = find_encoding(committer_end, message); | |
278 | if (message) | |
279 | message += 2; | |
280 | ||
281 | if (commit->parents && | |
282 | get_object_mark(&commit->parents->item->object) != 0 && | |
283 | !full_tree) { | |
284 | parse_commit(commit->parents->item); | |
285 | diff_tree_sha1(commit->parents->item->tree->object.sha1, | |
286 | commit->tree->object.sha1, "", &rev->diffopt); | |
287 | } | |
288 | else | |
289 | diff_root_tree_sha1(commit->tree->object.sha1, | |
290 | "", &rev->diffopt); | |
291 | ||
292 | /* Export the referenced blobs, and remember the marks. */ | |
293 | for (i = 0; i < diff_queued_diff.nr; i++) | |
294 | if (!S_ISGITLINK(diff_queued_diff.queue[i]->two->mode)) | |
295 | handle_object(diff_queued_diff.queue[i]->two->sha1); | |
296 | ||
297 | mark_next_object(&commit->object); | |
298 | if (!is_encoding_utf8(encoding)) | |
299 | reencoded = reencode_string(message, "UTF-8", encoding); | |
300 | if (!commit->parents) | |
301 | printf("reset %s\n", (const char*)commit->util); | |
302 | printf("commit %s\nmark :%"PRIu32"\n%.*s\n%.*s\ndata %u\n%s", | |
303 | (const char *)commit->util, last_idnum, | |
304 | (int)(author_end - author), author, | |
305 | (int)(committer_end - committer), committer, | |
306 | (unsigned)(reencoded | |
307 | ? strlen(reencoded) : message | |
308 | ? strlen(message) : 0), | |
309 | reencoded ? reencoded : message ? message : ""); | |
310 | free(reencoded); | |
311 | ||
312 | for (i = 0, p = commit->parents; p; p = p->next) { | |
313 | int mark = get_object_mark(&p->item->object); | |
314 | if (!mark) | |
315 | continue; | |
316 | if (i == 0) | |
317 | printf("from :%d\n", mark); | |
318 | else | |
319 | printf("merge :%d\n", mark); | |
320 | i++; | |
321 | } | |
322 | ||
323 | if (full_tree) | |
324 | printf("deleteall\n"); | |
325 | log_tree_diff_flush(rev); | |
326 | rev->diffopt.output_format = saved_output_format; | |
327 | ||
328 | printf("\n"); | |
329 | ||
330 | show_progress(); | |
331 | } | |
332 | ||
333 | static void handle_tail(struct object_array *commits, struct rev_info *revs) | |
334 | { | |
335 | struct commit *commit; | |
336 | while (commits->nr) { | |
337 | commit = (struct commit *)commits->objects[commits->nr - 1].item; | |
338 | if (has_unshown_parent(commit)) | |
339 | return; | |
340 | handle_commit(commit, revs); | |
341 | commits->nr--; | |
342 | } | |
343 | } | |
344 | ||
345 | static void handle_tag(const char *name, struct tag *tag) | |
346 | { | |
347 | unsigned long size; | |
348 | enum object_type type; | |
349 | char *buf; | |
350 | const char *tagger, *tagger_end, *message; | |
351 | size_t message_size = 0; | |
352 | struct object *tagged; | |
353 | int tagged_mark; | |
354 | struct commit *p; | |
355 | ||
356 | /* Trees have no identifer in fast-export output, thus we have no way | |
357 | * to output tags of trees, tags of tags of trees, etc. Simply omit | |
358 | * such tags. | |
359 | */ | |
360 | tagged = tag->tagged; | |
361 | while (tagged->type == OBJ_TAG) { | |
362 | tagged = ((struct tag *)tagged)->tagged; | |
363 | } | |
364 | if (tagged->type == OBJ_TREE) { | |
365 | warning("Omitting tag %s,\nsince tags of trees (or tags of tags of trees, etc.) are not supported.", | |
366 | sha1_to_hex(tag->object.sha1)); | |
367 | return; | |
368 | } | |
369 | ||
370 | buf = read_sha1_file(tag->object.sha1, &type, &size); | |
371 | if (!buf) | |
372 | die ("Could not read tag %s", sha1_to_hex(tag->object.sha1)); | |
373 | message = memmem(buf, size, "\n\n", 2); | |
374 | if (message) { | |
375 | message += 2; | |
376 | message_size = strlen(message); | |
377 | } | |
378 | tagger = memmem(buf, message ? message - buf : size, "\ntagger ", 8); | |
379 | if (!tagger) { | |
380 | if (fake_missing_tagger) | |
381 | tagger = "tagger Unspecified Tagger " | |
382 | "<unspecified-tagger> 0 +0000"; | |
383 | else | |
384 | tagger = ""; | |
385 | tagger_end = tagger + strlen(tagger); | |
386 | } else { | |
387 | tagger++; | |
388 | tagger_end = strchrnul(tagger, '\n'); | |
389 | } | |
390 | ||
391 | /* handle signed tags */ | |
392 | if (message) { | |
393 | const char *signature = strstr(message, | |
394 | "\n-----BEGIN PGP SIGNATURE-----\n"); | |
395 | if (signature) | |
396 | switch(signed_tag_mode) { | |
397 | case ABORT: | |
398 | die ("Encountered signed tag %s; use " | |
399 | "--signed-tag=<mode> to handle it.", | |
400 | sha1_to_hex(tag->object.sha1)); | |
401 | case WARN: | |
402 | warning ("Exporting signed tag %s", | |
403 | sha1_to_hex(tag->object.sha1)); | |
404 | /* fallthru */ | |
405 | case VERBATIM: | |
406 | break; | |
407 | case STRIP: | |
408 | message_size = signature + 1 - message; | |
409 | break; | |
410 | } | |
411 | } | |
412 | ||
413 | /* handle tag->tagged having been filtered out due to paths specified */ | |
414 | tagged = tag->tagged; | |
415 | tagged_mark = get_object_mark(tagged); | |
416 | if (!tagged_mark) { | |
417 | switch(tag_of_filtered_mode) { | |
418 | case ABORT: | |
419 | die ("Tag %s tags unexported object; use " | |
420 | "--tag-of-filtered-object=<mode> to handle it.", | |
421 | sha1_to_hex(tag->object.sha1)); | |
422 | case DROP: | |
423 | /* Ignore this tag altogether */ | |
424 | return; | |
425 | case REWRITE: | |
426 | if (tagged->type != OBJ_COMMIT) { | |
427 | die ("Tag %s tags unexported %s!", | |
428 | sha1_to_hex(tag->object.sha1), | |
429 | typename(tagged->type)); | |
430 | } | |
431 | p = (struct commit *)tagged; | |
432 | for (;;) { | |
433 | if (p->parents && p->parents->next) | |
434 | break; | |
435 | if (p->object.flags & UNINTERESTING) | |
436 | break; | |
437 | if (!(p->object.flags & TREESAME)) | |
438 | break; | |
439 | if (!p->parents) | |
440 | die ("Can't find replacement commit for tag %s\n", | |
441 | sha1_to_hex(tag->object.sha1)); | |
442 | p = p->parents->item; | |
443 | } | |
444 | tagged_mark = get_object_mark(&p->object); | |
445 | } | |
446 | } | |
447 | ||
448 | if (!prefixcmp(name, "refs/tags/")) | |
449 | name += 10; | |
450 | printf("tag %s\nfrom :%d\n%.*s%sdata %d\n%.*s\n", | |
451 | name, tagged_mark, | |
452 | (int)(tagger_end - tagger), tagger, | |
453 | tagger == tagger_end ? "" : "\n", | |
454 | (int)message_size, (int)message_size, message ? message : ""); | |
455 | } | |
456 | ||
457 | static void get_tags_and_duplicates(struct object_array *pending, | |
458 | struct string_list *extra_refs) | |
459 | { | |
460 | struct tag *tag; | |
461 | int i; | |
462 | ||
463 | for (i = 0; i < pending->nr; i++) { | |
464 | struct object_array_entry *e = pending->objects + i; | |
465 | unsigned char sha1[20]; | |
466 | struct commit *commit = commit; | |
467 | char *full_name; | |
468 | ||
469 | if (dwim_ref(e->name, strlen(e->name), sha1, &full_name) != 1) | |
470 | continue; | |
471 | ||
472 | switch (e->item->type) { | |
473 | case OBJ_COMMIT: | |
474 | commit = (struct commit *)e->item; | |
475 | break; | |
476 | case OBJ_TAG: | |
477 | tag = (struct tag *)e->item; | |
478 | ||
479 | /* handle nested tags */ | |
480 | while (tag && tag->object.type == OBJ_TAG) { | |
481 | parse_object(tag->object.sha1); | |
482 | string_list_append(extra_refs, full_name)->util = tag; | |
483 | tag = (struct tag *)tag->tagged; | |
484 | } | |
485 | if (!tag) | |
486 | die ("Tag %s points nowhere?", e->name); | |
487 | switch(tag->object.type) { | |
488 | case OBJ_COMMIT: | |
489 | commit = (struct commit *)tag; | |
490 | break; | |
491 | case OBJ_BLOB: | |
492 | handle_object(tag->object.sha1); | |
493 | continue; | |
494 | default: /* OBJ_TAG (nested tags) is already handled */ | |
495 | warning("Tag points to object of unexpected type %s, skipping.", | |
496 | typename(tag->object.type)); | |
497 | continue; | |
498 | } | |
499 | break; | |
500 | default: | |
501 | warning("%s: Unexpected object of type %s, skipping.", | |
502 | e->name, | |
503 | typename(e->item->type)); | |
504 | continue; | |
505 | } | |
506 | if (commit->util) | |
507 | /* more than one name for the same object */ | |
508 | string_list_append(extra_refs, full_name)->util = commit; | |
509 | else | |
510 | commit->util = full_name; | |
511 | } | |
512 | } | |
513 | ||
514 | static void handle_tags_and_duplicates(struct string_list *extra_refs) | |
515 | { | |
516 | struct commit *commit; | |
517 | int i; | |
518 | ||
519 | for (i = extra_refs->nr - 1; i >= 0; i--) { | |
520 | const char *name = extra_refs->items[i].string; | |
521 | struct object *object = extra_refs->items[i].util; | |
522 | switch (object->type) { | |
523 | case OBJ_TAG: | |
524 | handle_tag(name, (struct tag *)object); | |
525 | break; | |
526 | case OBJ_COMMIT: | |
527 | /* create refs pointing to already seen commits */ | |
528 | commit = (struct commit *)object; | |
529 | printf("reset %s\nfrom :%d\n\n", name, | |
530 | get_object_mark(&commit->object)); | |
531 | show_progress(); | |
532 | break; | |
533 | } | |
534 | } | |
535 | } | |
536 | ||
537 | static void export_marks(char *file) | |
538 | { | |
539 | unsigned int i; | |
540 | uint32_t mark; | |
541 | struct object_decoration *deco = idnums.hash; | |
542 | FILE *f; | |
543 | int e = 0; | |
544 | ||
545 | f = fopen(file, "w"); | |
546 | if (!f) | |
547 | die_errno("Unable to open marks file %s for writing.", file); | |
548 | ||
549 | for (i = 0; i < idnums.size; i++) { | |
550 | if (deco->base && deco->base->type == 1) { | |
551 | mark = ptr_to_mark(deco->decoration); | |
552 | if (fprintf(f, ":%"PRIu32" %s\n", mark, | |
553 | sha1_to_hex(deco->base->sha1)) < 0) { | |
554 | e = 1; | |
555 | break; | |
556 | } | |
557 | } | |
558 | deco++; | |
559 | } | |
560 | ||
561 | e |= ferror(f); | |
562 | e |= fclose(f); | |
563 | if (e) | |
564 | error("Unable to write marks file %s.", file); | |
565 | } | |
566 | ||
567 | static void import_marks(char *input_file) | |
568 | { | |
569 | char line[512]; | |
570 | FILE *f = fopen(input_file, "r"); | |
571 | if (!f) | |
572 | die_errno("cannot read '%s'", input_file); | |
573 | ||
574 | while (fgets(line, sizeof(line), f)) { | |
575 | uint32_t mark; | |
576 | char *line_end, *mark_end; | |
577 | unsigned char sha1[20]; | |
578 | struct object *object; | |
579 | ||
580 | line_end = strchr(line, '\n'); | |
581 | if (line[0] != ':' || !line_end) | |
582 | die("corrupt mark line: %s", line); | |
583 | *line_end = '\0'; | |
584 | ||
585 | mark = strtoumax(line + 1, &mark_end, 10); | |
586 | if (!mark || mark_end == line + 1 | |
587 | || *mark_end != ' ' || get_sha1(mark_end + 1, sha1)) | |
588 | die("corrupt mark line: %s", line); | |
589 | ||
590 | object = parse_object(sha1); | |
591 | if (!object) | |
592 | die ("Could not read blob %s", sha1_to_hex(sha1)); | |
593 | ||
594 | if (object->flags & SHOWN) | |
595 | error("Object %s already has a mark", sha1); | |
596 | ||
597 | mark_object(object, mark); | |
598 | if (last_idnum < mark) | |
599 | last_idnum = mark; | |
600 | ||
601 | object->flags |= SHOWN; | |
602 | } | |
603 | fclose(f); | |
604 | } | |
605 | ||
606 | int cmd_fast_export(int argc, const char **argv, const char *prefix) | |
607 | { | |
608 | struct rev_info revs; | |
609 | struct object_array commits = OBJECT_ARRAY_INIT; | |
610 | struct string_list extra_refs = STRING_LIST_INIT_NODUP; | |
611 | struct commit *commit; | |
612 | char *export_filename = NULL, *import_filename = NULL; | |
613 | struct option options[] = { | |
614 | OPT_INTEGER(0, "progress", &progress, | |
615 | "show progress after <n> objects"), | |
616 | OPT_CALLBACK(0, "signed-tags", &signed_tag_mode, "mode", | |
617 | "select handling of signed tags", | |
618 | parse_opt_signed_tag_mode), | |
619 | OPT_CALLBACK(0, "tag-of-filtered-object", &tag_of_filtered_mode, "mode", | |
620 | "select handling of tags that tag filtered objects", | |
621 | parse_opt_tag_of_filtered_mode), | |
622 | OPT_STRING(0, "export-marks", &export_filename, "FILE", | |
623 | "Dump marks to this file"), | |
624 | OPT_STRING(0, "import-marks", &import_filename, "FILE", | |
625 | "Import marks from this file"), | |
626 | OPT_BOOLEAN(0, "fake-missing-tagger", &fake_missing_tagger, | |
627 | "Fake a tagger when tags lack one"), | |
628 | OPT_BOOLEAN(0, "full-tree", &full_tree, | |
629 | "Output full tree for each commit"), | |
630 | { OPTION_NEGBIT, 0, "data", &no_data, NULL, | |
631 | "Skip output of blob data", | |
632 | PARSE_OPT_NOARG | PARSE_OPT_NEGHELP, NULL, 1 }, | |
633 | OPT_END() | |
634 | }; | |
635 | ||
636 | if (argc == 1) | |
637 | usage_with_options (fast_export_usage, options); | |
638 | ||
639 | /* we handle encodings */ | |
640 | git_config(git_default_config, NULL); | |
641 | ||
642 | init_revisions(&revs, prefix); | |
643 | revs.topo_order = 1; | |
644 | revs.show_source = 1; | |
645 | revs.rewrite_parents = 1; | |
646 | argc = setup_revisions(argc, argv, &revs, NULL); | |
647 | argc = parse_options(argc, argv, prefix, options, fast_export_usage, 0); | |
648 | if (argc > 1) | |
649 | usage_with_options (fast_export_usage, options); | |
650 | ||
651 | if (import_filename) | |
652 | import_marks(import_filename); | |
653 | ||
654 | if (import_filename && revs.prune_data) | |
655 | full_tree = 1; | |
656 | ||
657 | get_tags_and_duplicates(&revs.pending, &extra_refs); | |
658 | ||
659 | if (prepare_revision_walk(&revs)) | |
660 | die("revision walk setup failed"); | |
661 | revs.diffopt.format_callback = show_filemodify; | |
662 | DIFF_OPT_SET(&revs.diffopt, RECURSIVE); | |
663 | while ((commit = get_revision(&revs))) { | |
664 | if (has_unshown_parent(commit)) { | |
665 | add_object_array(&commit->object, NULL, &commits); | |
666 | } | |
667 | else { | |
668 | handle_commit(commit, &revs); | |
669 | handle_tail(&commits, &revs); | |
670 | } | |
671 | } | |
672 | ||
673 | handle_tags_and_duplicates(&extra_refs); | |
674 | ||
675 | if (export_filename) | |
676 | export_marks(export_filename); | |
677 | ||
678 | return 0; | |
679 | } |