fast-export: make extra_refs global
[git/git.git] / builtin / fast-export.c
CommitLineData
f2dc849e
JS
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"
c455c87c 16#include "string-list.h"
f2dc849e
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17#include "utf8.h"
18#include "parse-options.h"
6280dfdc 19#include "quote.h"
f2dc849e
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20
21static const char *fast_export_usage[] = {
3b787b96 22 N_("git fast-export [rev-list-opts]"),
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23 NULL
24};
25
26static int progress;
cd16c59b 27static enum { ABORT, VERBATIM, WARN, WARN_STRIP, STRIP } signed_tag_mode = ABORT;
d7a10c31 28static enum { ERROR, DROP, REWRITE } tag_of_filtered_mode = ERROR;
4e46a8d6 29static int fake_missing_tagger;
82670a5c 30static int use_done_feature;
79559f27 31static int no_data;
7f40ab09 32static int full_tree;
1d844ee7 33static struct string_list extra_refs = STRING_LIST_INIT_NODUP;
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34
35static int parse_opt_signed_tag_mode(const struct option *opt,
36 const char *arg, int unset)
37{
38 if (unset || !strcmp(arg, "abort"))
39 signed_tag_mode = ABORT;
ee4bc371
JS
40 else if (!strcmp(arg, "verbatim") || !strcmp(arg, "ignore"))
41 signed_tag_mode = VERBATIM;
f2dc849e
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42 else if (!strcmp(arg, "warn"))
43 signed_tag_mode = WARN;
cd16c59b
JK
44 else if (!strcmp(arg, "warn-strip"))
45 signed_tag_mode = WARN_STRIP;
f2dc849e
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46 else if (!strcmp(arg, "strip"))
47 signed_tag_mode = STRIP;
48 else
04a74b6c 49 return error("Unknown signed-tags mode: %s", arg);
f2dc849e
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50 return 0;
51}
52
2d8ad469
EN
53static int parse_opt_tag_of_filtered_mode(const struct option *opt,
54 const char *arg, int unset)
55{
56 if (unset || !strcmp(arg, "abort"))
d7a10c31 57 tag_of_filtered_mode = ERROR;
2d8ad469
EN
58 else if (!strcmp(arg, "drop"))
59 tag_of_filtered_mode = DROP;
60 else if (!strcmp(arg, "rewrite"))
61 tag_of_filtered_mode = REWRITE;
62 else
63 return error("Unknown tag-of-filtered mode: %s", arg);
64 return 0;
65}
66
f2dc849e
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67static struct decoration idnums;
68static uint32_t last_idnum;
69
70static int has_unshown_parent(struct commit *commit)
71{
72 struct commit_list *parent;
73
74 for (parent = commit->parents; parent; parent = parent->next)
75 if (!(parent->item->object.flags & SHOWN) &&
76 !(parent->item->object.flags & UNINTERESTING))
77 return 1;
78 return 0;
79}
80
81/* Since intptr_t is C99, we do not use it here */
df6a7ff7 82static inline uint32_t *mark_to_ptr(uint32_t mark)
f2dc849e 83{
df6a7ff7
PB
84 return ((uint32_t *)NULL) + mark;
85}
86
87static inline uint32_t ptr_to_mark(void * mark)
88{
89 return (uint32_t *)mark - (uint32_t *)NULL;
90}
91
92static inline void mark_object(struct object *object, uint32_t mark)
93{
94 add_decoration(&idnums, object, mark_to_ptr(mark));
95}
96
97static inline void mark_next_object(struct object *object)
98{
99 mark_object(object, ++last_idnum);
f2dc849e
JS
100}
101
102static int get_object_mark(struct object *object)
103{
104 void *decoration = lookup_decoration(&idnums, object);
105 if (!decoration)
106 return 0;
df6a7ff7 107 return ptr_to_mark(decoration);
f2dc849e
JS
108}
109
110static void show_progress(void)
111{
112 static int counter = 0;
113 if (!progress)
114 return;
115 if ((++counter % progress) == 0)
116 printf("progress %d objects\n", counter);
117}
118
f9b54e26 119static void export_blob(const unsigned char *sha1)
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120{
121 unsigned long size;
122 enum object_type type;
123 char *buf;
124 struct object *object;
30b939c3 125 int eaten;
f2dc849e 126
79559f27
GI
127 if (no_data)
128 return;
129
f2dc849e
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130 if (is_null_sha1(sha1))
131 return;
132
30b939c3
JK
133 object = lookup_object(sha1);
134 if (object && object->flags & SHOWN)
f2dc849e
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135 return;
136
137 buf = read_sha1_file(sha1, &type, &size);
138 if (!buf)
139 die ("Could not read blob %s", sha1_to_hex(sha1));
30b939c3
JK
140 if (check_sha1_signature(sha1, buf, size, typename(type)) < 0)
141 die("sha1 mismatch in blob %s", sha1_to_hex(sha1));
142 object = parse_object_buffer(sha1, type, size, buf, &eaten);
143 if (!object)
144 die("Could not read blob %s", sha1_to_hex(sha1));
f2dc849e 145
df6a7ff7 146 mark_next_object(object);
f2dc849e 147
6e1c2344 148 printf("blob\nmark :%"PRIu32"\ndata %lu\n", last_idnum, size);
b0fe0d72 149 if (size && fwrite(buf, size, 1, stdout) != 1)
0721c314 150 die_errno ("Could not write blob '%s'", sha1_to_hex(sha1));
f2dc849e
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151 printf("\n");
152
153 show_progress();
154
155 object->flags |= SHOWN;
30b939c3
JK
156 if (!eaten)
157 free(buf);
f2dc849e
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158}
159
060df624
EN
160static int depth_first(const void *a_, const void *b_)
161{
162 const struct diff_filepair *a = *((const struct diff_filepair **)a_);
163 const struct diff_filepair *b = *((const struct diff_filepair **)b_);
164 const char *name_a, *name_b;
165 int len_a, len_b, len;
166 int cmp;
167
168 name_a = a->one ? a->one->path : a->two->path;
169 name_b = b->one ? b->one->path : b->two->path;
170
171 len_a = strlen(name_a);
172 len_b = strlen(name_b);
173 len = (len_a < len_b) ? len_a : len_b;
174
175 /* strcmp will sort 'd' before 'd/e', we want 'd/e' before 'd' */
176 cmp = memcmp(name_a, name_b, len);
177 if (cmp)
178 return cmp;
4ce6fb80
JS
179 cmp = len_b - len_a;
180 if (cmp)
181 return cmp;
182 /*
183 * Move 'R'ename entries last so that all references of the file
184 * appear in the output before it is renamed (e.g., when a file
185 * was copied and renamed in the same commit).
186 */
187 return (a->status == 'R') - (b->status == 'R');
060df624
EN
188}
189
6280dfdc
JK
190static void print_path(const char *path)
191{
192 int need_quote = quote_c_style(path, NULL, NULL, 0);
193 if (need_quote)
194 quote_c_style(path, NULL, stdout, 0);
ff59f6da
JS
195 else if (strchr(path, ' '))
196 printf("\"%s\"", path);
6280dfdc
JK
197 else
198 printf("%s", path);
199}
200
f2dc849e
JS
201static void show_filemodify(struct diff_queue_struct *q,
202 struct diff_options *options, void *data)
203{
204 int i;
060df624
EN
205
206 /*
207 * Handle files below a directory first, in case they are all deleted
208 * and the directory changes to a file or symlink.
209 */
210 qsort(q->queue, q->nr, sizeof(q->queue[0]), depth_first);
211
f2dc849e 212 for (i = 0; i < q->nr; i++) {
ae7c5dce 213 struct diff_filespec *ospec = q->queue[i]->one;
f2dc849e 214 struct diff_filespec *spec = q->queue[i]->two;
ae7c5dce
AG
215
216 switch (q->queue[i]->status) {
217 case DIFF_STATUS_DELETED:
6280dfdc
JK
218 printf("D ");
219 print_path(spec->path);
220 putchar('\n');
ae7c5dce
AG
221 break;
222
223 case DIFF_STATUS_COPIED:
224 case DIFF_STATUS_RENAMED:
6280dfdc
JK
225 printf("%c ", q->queue[i]->status);
226 print_path(ospec->path);
227 putchar(' ');
228 print_path(spec->path);
229 putchar('\n');
ae7c5dce
AG
230
231 if (!hashcmp(ospec->sha1, spec->sha1) &&
232 ospec->mode == spec->mode)
233 break;
234 /* fallthrough */
235
236 case DIFF_STATUS_TYPE_CHANGED:
237 case DIFF_STATUS_MODIFIED:
238 case DIFF_STATUS_ADDED:
03db4525
AG
239 /*
240 * Links refer to objects in another repositories;
241 * output the SHA-1 verbatim.
242 */
79559f27 243 if (no_data || S_ISGITLINK(spec->mode))
6280dfdc
JK
244 printf("M %06o %s ", spec->mode,
245 sha1_to_hex(spec->sha1));
03db4525
AG
246 else {
247 struct object *object = lookup_object(spec->sha1);
6280dfdc
JK
248 printf("M %06o :%d ", spec->mode,
249 get_object_mark(object));
03db4525 250 }
6280dfdc
JK
251 print_path(spec->path);
252 putchar('\n');
ae7c5dce
AG
253 break;
254
255 default:
256 die("Unexpected comparison status '%c' for %s, %s",
257 q->queue[i]->status,
258 ospec->path ? ospec->path : "none",
259 spec->path ? spec->path : "none");
f2dc849e
JS
260 }
261 }
262}
263
264static const char *find_encoding(const char *begin, const char *end)
265{
266 const char *needle = "\nencoding ";
267 char *bol, *eol;
268
269 bol = memmem(begin, end ? end - begin : strlen(begin),
270 needle, strlen(needle));
271 if (!bol)
272 return git_commit_encoding;
273 bol += strlen(needle);
274 eol = strchrnul(bol, '\n');
275 *eol = '\0';
276 return bol;
277}
278
279static void handle_commit(struct commit *commit, struct rev_info *rev)
280{
281 int saved_output_format = rev->diffopt.output_format;
282 const char *author, *author_end, *committer, *committer_end;
283 const char *encoding, *message;
284 char *reencoded = NULL;
285 struct commit_list *p;
286 int i;
287
288 rev->diffopt.output_format = DIFF_FORMAT_CALLBACK;
289
290 parse_commit(commit);
291 author = strstr(commit->buffer, "\nauthor ");
292 if (!author)
293 die ("Could not find author in commit %s",
294 sha1_to_hex(commit->object.sha1));
295 author++;
296 author_end = strchrnul(author, '\n');
297 committer = strstr(author_end, "\ncommitter ");
298 if (!committer)
299 die ("Could not find committer in commit %s",
300 sha1_to_hex(commit->object.sha1));
301 committer++;
302 committer_end = strchrnul(committer, '\n');
303 message = strstr(committer_end, "\n\n");
304 encoding = find_encoding(committer_end, message);
305 if (message)
306 message += 2;
307
ebeec7db 308 if (commit->parents &&
4087a02e
EN
309 get_object_mark(&commit->parents->item->object) != 0 &&
310 !full_tree) {
f2dc849e
JS
311 parse_commit(commit->parents->item);
312 diff_tree_sha1(commit->parents->item->tree->object.sha1,
313 commit->tree->object.sha1, "", &rev->diffopt);
314 }
315 else
316 diff_root_tree_sha1(commit->tree->object.sha1,
317 "", &rev->diffopt);
318
03db4525 319 /* Export the referenced blobs, and remember the marks. */
f2dc849e 320 for (i = 0; i < diff_queued_diff.nr; i++)
03db4525 321 if (!S_ISGITLINK(diff_queued_diff.queue[i]->two->mode))
f9b54e26 322 export_blob(diff_queued_diff.queue[i]->two->sha1);
f2dc849e 323
df6a7ff7 324 mark_next_object(&commit->object);
f2dc849e
JS
325 if (!is_encoding_utf8(encoding))
326 reencoded = reencode_string(message, "UTF-8", encoding);
d8933f01
SP
327 if (!commit->parents)
328 printf("reset %s\n", (const char*)commit->util);
6e1c2344 329 printf("commit %s\nmark :%"PRIu32"\n%.*s\n%.*s\ndata %u\n%s",
f2dc849e
JS
330 (const char *)commit->util, last_idnum,
331 (int)(author_end - author), author,
332 (int)(committer_end - committer), committer,
333 (unsigned)(reencoded
334 ? strlen(reencoded) : message
335 ? strlen(message) : 0),
336 reencoded ? reencoded : message ? message : "");
8e0f7003 337 free(reencoded);
f2dc849e
JS
338
339 for (i = 0, p = commit->parents; p; p = p->next) {
340 int mark = get_object_mark(&p->item->object);
341 if (!mark)
342 continue;
343 if (i == 0)
344 printf("from :%d\n", mark);
f2dc849e 345 else
5070b49e 346 printf("merge :%d\n", mark);
f2dc849e
JS
347 i++;
348 }
f2dc849e 349
4087a02e
EN
350 if (full_tree)
351 printf("deleteall\n");
f2dc849e
JS
352 log_tree_diff_flush(rev);
353 rev->diffopt.output_format = saved_output_format;
354
355 printf("\n");
356
357 show_progress();
358}
359
360static void handle_tail(struct object_array *commits, struct rev_info *revs)
361{
362 struct commit *commit;
363 while (commits->nr) {
364 commit = (struct commit *)commits->objects[commits->nr - 1].item;
365 if (has_unshown_parent(commit))
366 return;
367 handle_commit(commit, revs);
368 commits->nr--;
369 }
370}
371
372static void handle_tag(const char *name, struct tag *tag)
373{
374 unsigned long size;
375 enum object_type type;
376 char *buf;
377 const char *tagger, *tagger_end, *message;
378 size_t message_size = 0;
02c48cd6 379 struct object *tagged;
2d8ad469
EN
380 int tagged_mark;
381 struct commit *p;
02c48cd6 382
98e023de 383 /* Trees have no identifier in fast-export output, thus we have no way
02c48cd6
EN
384 * to output tags of trees, tags of tags of trees, etc. Simply omit
385 * such tags.
386 */
387 tagged = tag->tagged;
388 while (tagged->type == OBJ_TAG) {
389 tagged = ((struct tag *)tagged)->tagged;
390 }
391 if (tagged->type == OBJ_TREE) {
392 warning("Omitting tag %s,\nsince tags of trees (or tags of tags of trees, etc.) are not supported.",
393 sha1_to_hex(tag->object.sha1));
394 return;
395 }
f2dc849e
JS
396
397 buf = read_sha1_file(tag->object.sha1, &type, &size);
398 if (!buf)
399 die ("Could not read tag %s", sha1_to_hex(tag->object.sha1));
400 message = memmem(buf, size, "\n\n", 2);
401 if (message) {
402 message += 2;
403 message_size = strlen(message);
404 }
405 tagger = memmem(buf, message ? message - buf : size, "\ntagger ", 8);
4e46a8d6
JS
406 if (!tagger) {
407 if (fake_missing_tagger)
408 tagger = "tagger Unspecified Tagger "
409 "<unspecified-tagger> 0 +0000";
410 else
411 tagger = "";
412 tagger_end = tagger + strlen(tagger);
413 } else {
414 tagger++;
415 tagger_end = strchrnul(tagger, '\n');
416 }
f2dc849e
JS
417
418 /* handle signed tags */
419 if (message) {
420 const char *signature = strstr(message,
421 "\n-----BEGIN PGP SIGNATURE-----\n");
422 if (signature)
423 switch(signed_tag_mode) {
424 case ABORT:
425 die ("Encountered signed tag %s; use "
04a74b6c 426 "--signed-tags=<mode> to handle it.",
f2dc849e
JS
427 sha1_to_hex(tag->object.sha1));
428 case WARN:
429 warning ("Exporting signed tag %s",
430 sha1_to_hex(tag->object.sha1));
431 /* fallthru */
ee4bc371 432 case VERBATIM:
f2dc849e 433 break;
cd16c59b
JK
434 case WARN_STRIP:
435 warning ("Stripping signature from tag %s",
436 sha1_to_hex(tag->object.sha1));
437 /* fallthru */
f2dc849e
JS
438 case STRIP:
439 message_size = signature + 1 - message;
440 break;
441 }
442 }
443
2d8ad469
EN
444 /* handle tag->tagged having been filtered out due to paths specified */
445 tagged = tag->tagged;
446 tagged_mark = get_object_mark(tagged);
447 if (!tagged_mark) {
448 switch(tag_of_filtered_mode) {
449 case ABORT:
450 die ("Tag %s tags unexported object; use "
451 "--tag-of-filtered-object=<mode> to handle it.",
452 sha1_to_hex(tag->object.sha1));
453 case DROP:
454 /* Ignore this tag altogether */
455 return;
456 case REWRITE:
457 if (tagged->type != OBJ_COMMIT) {
458 die ("Tag %s tags unexported %s!",
459 sha1_to_hex(tag->object.sha1),
460 typename(tagged->type));
461 }
462 p = (struct commit *)tagged;
463 for (;;) {
464 if (p->parents && p->parents->next)
465 break;
466 if (p->object.flags & UNINTERESTING)
467 break;
468 if (!(p->object.flags & TREESAME))
469 break;
470 if (!p->parents)
471 die ("Can't find replacement commit for tag %s\n",
472 sha1_to_hex(tag->object.sha1));
473 p = p->parents->item;
474 }
475 tagged_mark = get_object_mark(&p->object);
476 }
477 }
478
f2dc849e
JS
479 if (!prefixcmp(name, "refs/tags/"))
480 name += 10;
4e46a8d6 481 printf("tag %s\nfrom :%d\n%.*s%sdata %d\n%.*s\n",
2d8ad469 482 name, tagged_mark,
f2dc849e 483 (int)(tagger_end - tagger), tagger,
4e46a8d6 484 tagger == tagger_end ? "" : "\n",
f2dc849e
JS
485 (int)message_size, (int)message_size, message ? message : "");
486}
487
1d844ee7 488static void get_tags_and_duplicates(struct rev_cmdline_info *info)
f2dc849e
JS
489{
490 struct tag *tag;
491 int i;
492
49266e8a
FC
493 for (i = 0; i < info->nr; i++) {
494 struct rev_cmdline_entry *e = info->rev + i;
f2dc849e 495 unsigned char sha1[20];
2d242de4 496 struct commit *commit;
f2dc849e
JS
497 char *full_name;
498
49266e8a
FC
499 if (e->flags & UNINTERESTING)
500 continue;
501
f2dc849e
JS
502 if (dwim_ref(e->name, strlen(e->name), sha1, &full_name) != 1)
503 continue;
504
505 switch (e->item->type) {
506 case OBJ_COMMIT:
507 commit = (struct commit *)e->item;
508 break;
509 case OBJ_TAG:
510 tag = (struct tag *)e->item;
1982467d
EFL
511
512 /* handle nested tags */
f2dc849e 513 while (tag && tag->object.type == OBJ_TAG) {
1982467d 514 parse_object(tag->object.sha1);
1d844ee7 515 string_list_append(&extra_refs, full_name)->util = tag;
f2dc849e
JS
516 tag = (struct tag *)tag->tagged;
517 }
518 if (!tag)
519 die ("Tag %s points nowhere?", e->name);
520 switch(tag->object.type) {
521 case OBJ_COMMIT:
522 commit = (struct commit *)tag;
523 break;
524 case OBJ_BLOB:
f9b54e26 525 export_blob(tag->object.sha1);
f2dc849e 526 continue;
1982467d 527 default: /* OBJ_TAG (nested tags) is already handled */
c0582c53
EFL
528 warning("Tag points to object of unexpected type %s, skipping.",
529 typename(tag->object.type));
530 continue;
f2dc849e
JS
531 }
532 break;
533 default:
2d07f6d4
EFL
534 warning("%s: Unexpected object of type %s, skipping.",
535 e->name,
536 typename(e->item->type));
537 continue;
f2dc849e 538 }
f28e7c90
FC
539
540 /*
541 * This ref will not be updated through a commit, lets make
542 * sure it gets properly updated eventually.
543 */
544 if (commit->util || commit->object.flags & SHOWN)
1d844ee7 545 string_list_append(&extra_refs, full_name)->util = commit;
f28e7c90 546 if (!commit->util)
f2dc849e
JS
547 commit->util = full_name;
548 }
549}
550
1d844ee7 551static void handle_tags_and_duplicates(void)
f2dc849e
JS
552{
553 struct commit *commit;
554 int i;
555
1d844ee7
FC
556 for (i = extra_refs.nr - 1; i >= 0; i--) {
557 const char *name = extra_refs.items[i].string;
558 struct object *object = extra_refs.items[i].util;
f2dc849e
JS
559 switch (object->type) {
560 case OBJ_TAG:
561 handle_tag(name, (struct tag *)object);
562 break;
563 case OBJ_COMMIT:
564 /* create refs pointing to already seen commits */
565 commit = (struct commit *)object;
566 printf("reset %s\nfrom :%d\n\n", name,
567 get_object_mark(&commit->object));
568 show_progress();
569 break;
570 }
571 }
572}
573
df6a7ff7
PB
574static void export_marks(char *file)
575{
576 unsigned int i;
577 uint32_t mark;
578 struct object_decoration *deco = idnums.hash;
579 FILE *f;
96d69b55 580 int e = 0;
df6a7ff7
PB
581
582 f = fopen(file, "w");
583 if (!f)
bb6ad28c 584 die_errno("Unable to open marks file %s for writing.", file);
df6a7ff7 585
69913575
JH
586 for (i = 0; i < idnums.size; i++) {
587 if (deco->base && deco->base->type == 1) {
df6a7ff7 588 mark = ptr_to_mark(deco->decoration);
96d69b55
MA
589 if (fprintf(f, ":%"PRIu32" %s\n", mark,
590 sha1_to_hex(deco->base->sha1)) < 0) {
591 e = 1;
592 break;
593 }
df6a7ff7 594 }
69913575 595 deco++;
df6a7ff7
PB
596 }
597
96d69b55
MA
598 e |= ferror(f);
599 e |= fclose(f);
600 if (e)
df6a7ff7
PB
601 error("Unable to write marks file %s.", file);
602}
603
69913575 604static void import_marks(char *input_file)
df6a7ff7
PB
605{
606 char line[512];
607 FILE *f = fopen(input_file, "r");
608 if (!f)
d824cbba 609 die_errno("cannot read '%s'", input_file);
df6a7ff7
PB
610
611 while (fgets(line, sizeof(line), f)) {
612 uint32_t mark;
613 char *line_end, *mark_end;
614 unsigned char sha1[20];
615 struct object *object;
47bd9bf8 616 struct commit *commit;
e6812cfa 617 enum object_type type;
df6a7ff7
PB
618
619 line_end = strchr(line, '\n');
620 if (line[0] != ':' || !line_end)
621 die("corrupt mark line: %s", line);
69913575 622 *line_end = '\0';
df6a7ff7
PB
623
624 mark = strtoumax(line + 1, &mark_end, 10);
625 if (!mark || mark_end == line + 1
45c5d4a5 626 || *mark_end != ' ' || get_sha1_hex(mark_end + 1, sha1))
df6a7ff7
PB
627 die("corrupt mark line: %s", line);
628
c4458ecd
AP
629 if (last_idnum < mark)
630 last_idnum = mark;
631
e6812cfa
FC
632 type = sha1_object_info(sha1, NULL);
633 if (type < 0)
634 die("object not found: %s", sha1_to_hex(sha1));
635
636 if (type != OBJ_COMMIT)
637 /* only commits */
c4458ecd 638 continue;
df6a7ff7 639
47bd9bf8
FC
640 commit = lookup_commit(sha1);
641 if (!commit)
642 die("not a commit? can't happen: %s", sha1_to_hex(sha1));
643
644 object = &commit->object;
e6812cfa 645
df6a7ff7 646 if (object->flags & SHOWN)
43bc2302 647 error("Object %s already has a mark", sha1_to_hex(sha1));
df6a7ff7
PB
648
649 mark_object(object, mark);
df6a7ff7
PB
650
651 object->flags |= SHOWN;
652 }
653 fclose(f);
654}
655
f2dc849e
JS
656int cmd_fast_export(int argc, const char **argv, const char *prefix)
657{
658 struct rev_info revs;
3cd47459 659 struct object_array commits = OBJECT_ARRAY_INIT;
f2dc849e 660 struct commit *commit;
df6a7ff7 661 char *export_filename = NULL, *import_filename = NULL;
c4458ecd 662 uint32_t lastimportid;
f2dc849e
JS
663 struct option options[] = {
664 OPT_INTEGER(0, "progress", &progress,
3b787b96
NTND
665 N_("show progress after <n> objects")),
666 OPT_CALLBACK(0, "signed-tags", &signed_tag_mode, N_("mode"),
667 N_("select handling of signed tags"),
f2dc849e 668 parse_opt_signed_tag_mode),
3b787b96
NTND
669 OPT_CALLBACK(0, "tag-of-filtered-object", &tag_of_filtered_mode, N_("mode"),
670 N_("select handling of tags that tag filtered objects"),
2d8ad469 671 parse_opt_tag_of_filtered_mode),
3b787b96
NTND
672 OPT_STRING(0, "export-marks", &export_filename, N_("file"),
673 N_("Dump marks to this file")),
674 OPT_STRING(0, "import-marks", &import_filename, N_("file"),
675 N_("Import marks from this file")),
4e46a8d6 676 OPT_BOOLEAN(0, "fake-missing-tagger", &fake_missing_tagger,
3b787b96 677 N_("Fake a tagger when tags lack one")),
7f40ab09 678 OPT_BOOLEAN(0, "full-tree", &full_tree,
3b787b96 679 N_("Output full tree for each commit")),
82670a5c 680 OPT_BOOLEAN(0, "use-done-feature", &use_done_feature,
3b787b96
NTND
681 N_("Use the done feature to terminate the stream")),
682 OPT_BOOL(0, "no-data", &no_data, N_("Skip output of blob data")),
f2dc849e
JS
683 OPT_END()
684 };
685
dcfdbdf0
MV
686 if (argc == 1)
687 usage_with_options (fast_export_usage, options);
688
f2dc849e 689 /* we handle encodings */
ef90d6d4 690 git_config(git_default_config, NULL);
f2dc849e
JS
691
692 init_revisions(&revs, prefix);
668f3aa7 693 revs.topo_order = 1;
2374502c 694 revs.show_source = 1;
32164131 695 revs.rewrite_parents = 1;
f2dc849e 696 argc = setup_revisions(argc, argv, &revs, NULL);
37782920 697 argc = parse_options(argc, argv, prefix, options, fast_export_usage, 0);
f2dc849e
JS
698 if (argc > 1)
699 usage_with_options (fast_export_usage, options);
700
82670a5c
SR
701 if (use_done_feature)
702 printf("feature done\n");
703
df6a7ff7
PB
704 if (import_filename)
705 import_marks(import_filename);
c4458ecd 706 lastimportid = last_idnum;
df6a7ff7 707
afe069d1 708 if (import_filename && revs.prune_data.nr)
4087a02e
EN
709 full_tree = 1;
710
1d844ee7 711 get_tags_and_duplicates(&revs.cmdline);
f2dc849e 712
3d51e1b5
MK
713 if (prepare_revision_walk(&revs))
714 die("revision walk setup failed");
f2dc849e
JS
715 revs.diffopt.format_callback = show_filemodify;
716 DIFF_OPT_SET(&revs.diffopt, RECURSIVE);
717 while ((commit = get_revision(&revs))) {
718 if (has_unshown_parent(commit)) {
f2dc849e 719 add_object_array(&commit->object, NULL, &commits);
f2dc849e
JS
720 }
721 else {
722 handle_commit(commit, &revs);
723 handle_tail(&commits, &revs);
724 }
725 }
726
1d844ee7 727 handle_tags_and_duplicates();
f2dc849e 728
c4458ecd 729 if (export_filename && lastimportid != last_idnum)
df6a7ff7
PB
730 export_marks(export_filename);
731
82670a5c
SR
732 if (use_done_feature)
733 printf("done\n");
734
f2dc849e
JS
735 return 0;
736}