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Commit | Line | Data |
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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 JS |
17 | #include "utf8.h" |
18 | #include "parse-options.h" | |
6280dfdc | 19 | #include "quote.h" |
03e9010c | 20 | #include "remote.h" |
a8722750 | 21 | #include "blob.h" |
f2dc849e JS |
22 | |
23 | static const char *fast_export_usage[] = { | |
3b787b96 | 24 | N_("git fast-export [rev-list-opts]"), |
f2dc849e JS |
25 | NULL |
26 | }; | |
27 | ||
28 | static int progress; | |
cd16c59b | 29 | static enum { ABORT, VERBATIM, WARN, WARN_STRIP, STRIP } signed_tag_mode = ABORT; |
d7a10c31 | 30 | static enum { ERROR, DROP, REWRITE } tag_of_filtered_mode = ERROR; |
4e46a8d6 | 31 | static int fake_missing_tagger; |
82670a5c | 32 | static int use_done_feature; |
79559f27 | 33 | static int no_data; |
7f40ab09 | 34 | static int full_tree; |
1d844ee7 | 35 | static struct string_list extra_refs = STRING_LIST_INIT_NODUP; |
03e9010c FC |
36 | static struct refspec *refspecs; |
37 | static int refspecs_nr; | |
a8722750 | 38 | static int anonymize; |
f2dc849e JS |
39 | |
40 | static int parse_opt_signed_tag_mode(const struct option *opt, | |
41 | const char *arg, int unset) | |
42 | { | |
43 | if (unset || !strcmp(arg, "abort")) | |
44 | signed_tag_mode = ABORT; | |
ee4bc371 JS |
45 | else if (!strcmp(arg, "verbatim") || !strcmp(arg, "ignore")) |
46 | signed_tag_mode = VERBATIM; | |
f2dc849e JS |
47 | else if (!strcmp(arg, "warn")) |
48 | signed_tag_mode = WARN; | |
cd16c59b JK |
49 | else if (!strcmp(arg, "warn-strip")) |
50 | signed_tag_mode = WARN_STRIP; | |
f2dc849e JS |
51 | else if (!strcmp(arg, "strip")) |
52 | signed_tag_mode = STRIP; | |
53 | else | |
04a74b6c | 54 | return error("Unknown signed-tags mode: %s", arg); |
f2dc849e JS |
55 | return 0; |
56 | } | |
57 | ||
2d8ad469 EN |
58 | static int parse_opt_tag_of_filtered_mode(const struct option *opt, |
59 | const char *arg, int unset) | |
60 | { | |
61 | if (unset || !strcmp(arg, "abort")) | |
d7a10c31 | 62 | tag_of_filtered_mode = ERROR; |
2d8ad469 EN |
63 | else if (!strcmp(arg, "drop")) |
64 | tag_of_filtered_mode = DROP; | |
65 | else if (!strcmp(arg, "rewrite")) | |
66 | tag_of_filtered_mode = REWRITE; | |
67 | else | |
68 | return error("Unknown tag-of-filtered mode: %s", arg); | |
69 | return 0; | |
70 | } | |
71 | ||
f2dc849e JS |
72 | static struct decoration idnums; |
73 | static uint32_t last_idnum; | |
74 | ||
75 | static int has_unshown_parent(struct commit *commit) | |
76 | { | |
77 | struct commit_list *parent; | |
78 | ||
79 | for (parent = commit->parents; parent; parent = parent->next) | |
80 | if (!(parent->item->object.flags & SHOWN) && | |
81 | !(parent->item->object.flags & UNINTERESTING)) | |
82 | return 1; | |
83 | return 0; | |
84 | } | |
85 | ||
a8722750 JK |
86 | struct anonymized_entry { |
87 | struct hashmap_entry hash; | |
88 | const char *orig; | |
89 | size_t orig_len; | |
90 | const char *anon; | |
91 | size_t anon_len; | |
92 | }; | |
93 | ||
94 | static int anonymized_entry_cmp(const void *va, const void *vb, | |
95 | const void *data) | |
96 | { | |
97 | const struct anonymized_entry *a = va, *b = vb; | |
98 | return a->orig_len != b->orig_len || | |
99 | memcmp(a->orig, b->orig, a->orig_len); | |
100 | } | |
101 | ||
102 | /* | |
103 | * Basically keep a cache of X->Y so that we can repeatedly replace | |
104 | * the same anonymized string with another. The actual generation | |
105 | * is farmed out to the generate function. | |
106 | */ | |
107 | static const void *anonymize_mem(struct hashmap *map, | |
108 | void *(*generate)(const void *, size_t *), | |
109 | const void *orig, size_t *len) | |
110 | { | |
111 | struct anonymized_entry key, *ret; | |
112 | ||
113 | if (!map->cmpfn) | |
114 | hashmap_init(map, anonymized_entry_cmp, 0); | |
115 | ||
116 | hashmap_entry_init(&key, memhash(orig, *len)); | |
117 | key.orig = orig; | |
118 | key.orig_len = *len; | |
119 | ret = hashmap_get(map, &key, NULL); | |
120 | ||
121 | if (!ret) { | |
122 | ret = xmalloc(sizeof(*ret)); | |
123 | hashmap_entry_init(&ret->hash, key.hash.hash); | |
124 | ret->orig = xstrdup(orig); | |
125 | ret->orig_len = *len; | |
126 | ret->anon = generate(orig, len); | |
127 | ret->anon_len = *len; | |
128 | hashmap_put(map, ret); | |
129 | } | |
130 | ||
131 | *len = ret->anon_len; | |
132 | return ret->anon; | |
133 | } | |
134 | ||
135 | /* | |
136 | * We anonymize each component of a path individually, | |
137 | * so that paths a/b and a/c will share a common root. | |
138 | * The paths are cached via anonymize_mem so that repeated | |
139 | * lookups for "a" will yield the same value. | |
140 | */ | |
141 | static void anonymize_path(struct strbuf *out, const char *path, | |
142 | struct hashmap *map, | |
143 | void *(*generate)(const void *, size_t *)) | |
144 | { | |
145 | while (*path) { | |
146 | const char *end_of_component = strchrnul(path, '/'); | |
147 | size_t len = end_of_component - path; | |
148 | const char *c = anonymize_mem(map, generate, path, &len); | |
149 | strbuf_add(out, c, len); | |
150 | path = end_of_component; | |
151 | if (*path) | |
152 | strbuf_addch(out, *path++); | |
153 | } | |
154 | } | |
155 | ||
f2dc849e | 156 | /* Since intptr_t is C99, we do not use it here */ |
df6a7ff7 | 157 | static inline uint32_t *mark_to_ptr(uint32_t mark) |
f2dc849e | 158 | { |
df6a7ff7 PB |
159 | return ((uint32_t *)NULL) + mark; |
160 | } | |
161 | ||
162 | static inline uint32_t ptr_to_mark(void * mark) | |
163 | { | |
164 | return (uint32_t *)mark - (uint32_t *)NULL; | |
165 | } | |
166 | ||
167 | static inline void mark_object(struct object *object, uint32_t mark) | |
168 | { | |
169 | add_decoration(&idnums, object, mark_to_ptr(mark)); | |
170 | } | |
171 | ||
172 | static inline void mark_next_object(struct object *object) | |
173 | { | |
174 | mark_object(object, ++last_idnum); | |
f2dc849e JS |
175 | } |
176 | ||
177 | static int get_object_mark(struct object *object) | |
178 | { | |
179 | void *decoration = lookup_decoration(&idnums, object); | |
180 | if (!decoration) | |
181 | return 0; | |
df6a7ff7 | 182 | return ptr_to_mark(decoration); |
f2dc849e JS |
183 | } |
184 | ||
185 | static void show_progress(void) | |
186 | { | |
187 | static int counter = 0; | |
188 | if (!progress) | |
189 | return; | |
190 | if ((++counter % progress) == 0) | |
191 | printf("progress %d objects\n", counter); | |
192 | } | |
193 | ||
a8722750 JK |
194 | /* |
195 | * Ideally we would want some transformation of the blob data here | |
196 | * that is unreversible, but would still be the same size and have | |
197 | * the same data relationship to other blobs (so that we get the same | |
198 | * delta and packing behavior as the original). But the first and last | |
199 | * requirements there are probably mutually exclusive, so let's take | |
200 | * the easy way out for now, and just generate arbitrary content. | |
201 | * | |
202 | * There's no need to cache this result with anonymize_mem, since | |
203 | * we already handle blob content caching with marks. | |
204 | */ | |
205 | static char *anonymize_blob(unsigned long *size) | |
206 | { | |
207 | static int counter; | |
208 | struct strbuf out = STRBUF_INIT; | |
209 | strbuf_addf(&out, "anonymous blob %d", counter++); | |
210 | *size = out.len; | |
211 | return strbuf_detach(&out, NULL); | |
212 | } | |
213 | ||
f9b54e26 | 214 | static void export_blob(const unsigned char *sha1) |
f2dc849e JS |
215 | { |
216 | unsigned long size; | |
217 | enum object_type type; | |
218 | char *buf; | |
219 | struct object *object; | |
30b939c3 | 220 | int eaten; |
f2dc849e | 221 | |
79559f27 GI |
222 | if (no_data) |
223 | return; | |
224 | ||
f2dc849e JS |
225 | if (is_null_sha1(sha1)) |
226 | return; | |
227 | ||
30b939c3 JK |
228 | object = lookup_object(sha1); |
229 | if (object && object->flags & SHOWN) | |
f2dc849e JS |
230 | return; |
231 | ||
a8722750 JK |
232 | if (anonymize) { |
233 | buf = anonymize_blob(&size); | |
234 | object = (struct object *)lookup_blob(sha1); | |
235 | eaten = 0; | |
236 | } else { | |
237 | buf = read_sha1_file(sha1, &type, &size); | |
238 | if (!buf) | |
239 | die ("Could not read blob %s", sha1_to_hex(sha1)); | |
240 | if (check_sha1_signature(sha1, buf, size, typename(type)) < 0) | |
241 | die("sha1 mismatch in blob %s", sha1_to_hex(sha1)); | |
242 | object = parse_object_buffer(sha1, type, size, buf, &eaten); | |
243 | } | |
244 | ||
30b939c3 JK |
245 | if (!object) |
246 | die("Could not read blob %s", sha1_to_hex(sha1)); | |
f2dc849e | 247 | |
df6a7ff7 | 248 | mark_next_object(object); |
f2dc849e | 249 | |
6e1c2344 | 250 | printf("blob\nmark :%"PRIu32"\ndata %lu\n", last_idnum, size); |
b0fe0d72 | 251 | if (size && fwrite(buf, size, 1, stdout) != 1) |
0721c314 | 252 | die_errno ("Could not write blob '%s'", sha1_to_hex(sha1)); |
f2dc849e JS |
253 | printf("\n"); |
254 | ||
255 | show_progress(); | |
256 | ||
257 | object->flags |= SHOWN; | |
30b939c3 JK |
258 | if (!eaten) |
259 | free(buf); | |
f2dc849e JS |
260 | } |
261 | ||
060df624 EN |
262 | static int depth_first(const void *a_, const void *b_) |
263 | { | |
264 | const struct diff_filepair *a = *((const struct diff_filepair **)a_); | |
265 | const struct diff_filepair *b = *((const struct diff_filepair **)b_); | |
266 | const char *name_a, *name_b; | |
267 | int len_a, len_b, len; | |
268 | int cmp; | |
269 | ||
270 | name_a = a->one ? a->one->path : a->two->path; | |
271 | name_b = b->one ? b->one->path : b->two->path; | |
272 | ||
273 | len_a = strlen(name_a); | |
274 | len_b = strlen(name_b); | |
275 | len = (len_a < len_b) ? len_a : len_b; | |
276 | ||
277 | /* strcmp will sort 'd' before 'd/e', we want 'd/e' before 'd' */ | |
278 | cmp = memcmp(name_a, name_b, len); | |
279 | if (cmp) | |
280 | return cmp; | |
4ce6fb80 JS |
281 | cmp = len_b - len_a; |
282 | if (cmp) | |
283 | return cmp; | |
284 | /* | |
285 | * Move 'R'ename entries last so that all references of the file | |
286 | * appear in the output before it is renamed (e.g., when a file | |
287 | * was copied and renamed in the same commit). | |
288 | */ | |
289 | return (a->status == 'R') - (b->status == 'R'); | |
060df624 EN |
290 | } |
291 | ||
a8722750 | 292 | static void print_path_1(const char *path) |
6280dfdc JK |
293 | { |
294 | int need_quote = quote_c_style(path, NULL, NULL, 0); | |
295 | if (need_quote) | |
296 | quote_c_style(path, NULL, stdout, 0); | |
ff59f6da JS |
297 | else if (strchr(path, ' ')) |
298 | printf("\"%s\"", path); | |
6280dfdc JK |
299 | else |
300 | printf("%s", path); | |
301 | } | |
302 | ||
a8722750 JK |
303 | static void *anonymize_path_component(const void *path, size_t *len) |
304 | { | |
305 | static int counter; | |
306 | struct strbuf out = STRBUF_INIT; | |
307 | strbuf_addf(&out, "path%d", counter++); | |
308 | return strbuf_detach(&out, len); | |
309 | } | |
310 | ||
311 | static void print_path(const char *path) | |
312 | { | |
313 | if (!anonymize) | |
314 | print_path_1(path); | |
315 | else { | |
316 | static struct hashmap paths; | |
317 | static struct strbuf anon = STRBUF_INIT; | |
318 | ||
319 | anonymize_path(&anon, path, &paths, anonymize_path_component); | |
320 | print_path_1(anon.buf); | |
321 | strbuf_reset(&anon); | |
322 | } | |
323 | } | |
324 | ||
325 | static void *generate_fake_sha1(const void *old, size_t *len) | |
326 | { | |
327 | static uint32_t counter = 1; /* avoid null sha1 */ | |
328 | unsigned char *out = xcalloc(20, 1); | |
329 | put_be32(out + 16, counter++); | |
330 | return out; | |
331 | } | |
332 | ||
333 | static const unsigned char *anonymize_sha1(const unsigned char *sha1) | |
334 | { | |
335 | static struct hashmap sha1s; | |
336 | size_t len = 20; | |
337 | return anonymize_mem(&sha1s, generate_fake_sha1, sha1, &len); | |
338 | } | |
339 | ||
f2dc849e JS |
340 | static void show_filemodify(struct diff_queue_struct *q, |
341 | struct diff_options *options, void *data) | |
342 | { | |
343 | int i; | |
060df624 EN |
344 | |
345 | /* | |
346 | * Handle files below a directory first, in case they are all deleted | |
347 | * and the directory changes to a file or symlink. | |
348 | */ | |
349 | qsort(q->queue, q->nr, sizeof(q->queue[0]), depth_first); | |
350 | ||
f2dc849e | 351 | for (i = 0; i < q->nr; i++) { |
ae7c5dce | 352 | struct diff_filespec *ospec = q->queue[i]->one; |
f2dc849e | 353 | struct diff_filespec *spec = q->queue[i]->two; |
ae7c5dce AG |
354 | |
355 | switch (q->queue[i]->status) { | |
356 | case DIFF_STATUS_DELETED: | |
6280dfdc JK |
357 | printf("D "); |
358 | print_path(spec->path); | |
359 | putchar('\n'); | |
ae7c5dce AG |
360 | break; |
361 | ||
362 | case DIFF_STATUS_COPIED: | |
363 | case DIFF_STATUS_RENAMED: | |
6280dfdc JK |
364 | printf("%c ", q->queue[i]->status); |
365 | print_path(ospec->path); | |
366 | putchar(' '); | |
367 | print_path(spec->path); | |
368 | putchar('\n'); | |
ae7c5dce AG |
369 | |
370 | if (!hashcmp(ospec->sha1, spec->sha1) && | |
371 | ospec->mode == spec->mode) | |
372 | break; | |
373 | /* fallthrough */ | |
374 | ||
375 | case DIFF_STATUS_TYPE_CHANGED: | |
376 | case DIFF_STATUS_MODIFIED: | |
377 | case DIFF_STATUS_ADDED: | |
03db4525 AG |
378 | /* |
379 | * Links refer to objects in another repositories; | |
380 | * output the SHA-1 verbatim. | |
381 | */ | |
79559f27 | 382 | if (no_data || S_ISGITLINK(spec->mode)) |
6280dfdc | 383 | printf("M %06o %s ", spec->mode, |
a8722750 JK |
384 | sha1_to_hex(anonymize ? |
385 | anonymize_sha1(spec->sha1) : | |
386 | spec->sha1)); | |
03db4525 AG |
387 | else { |
388 | struct object *object = lookup_object(spec->sha1); | |
6280dfdc JK |
389 | printf("M %06o :%d ", spec->mode, |
390 | get_object_mark(object)); | |
03db4525 | 391 | } |
6280dfdc JK |
392 | print_path(spec->path); |
393 | putchar('\n'); | |
ae7c5dce AG |
394 | break; |
395 | ||
396 | default: | |
397 | die("Unexpected comparison status '%c' for %s, %s", | |
398 | q->queue[i]->status, | |
399 | ospec->path ? ospec->path : "none", | |
400 | spec->path ? spec->path : "none"); | |
f2dc849e JS |
401 | } |
402 | } | |
403 | } | |
404 | ||
405 | static const char *find_encoding(const char *begin, const char *end) | |
406 | { | |
407 | const char *needle = "\nencoding "; | |
408 | char *bol, *eol; | |
409 | ||
410 | bol = memmem(begin, end ? end - begin : strlen(begin), | |
411 | needle, strlen(needle)); | |
412 | if (!bol) | |
413 | return git_commit_encoding; | |
414 | bol += strlen(needle); | |
415 | eol = strchrnul(bol, '\n'); | |
416 | *eol = '\0'; | |
417 | return bol; | |
418 | } | |
419 | ||
a8722750 JK |
420 | static void *anonymize_ref_component(const void *old, size_t *len) |
421 | { | |
422 | static int counter; | |
423 | struct strbuf out = STRBUF_INIT; | |
424 | strbuf_addf(&out, "ref%d", counter++); | |
425 | return strbuf_detach(&out, len); | |
426 | } | |
427 | ||
428 | static const char *anonymize_refname(const char *refname) | |
429 | { | |
430 | /* | |
431 | * If any of these prefixes is found, we will leave it intact | |
432 | * so that tags remain tags and so forth. | |
433 | */ | |
434 | static const char *prefixes[] = { | |
435 | "refs/heads/", | |
436 | "refs/tags/", | |
437 | "refs/remotes/", | |
438 | "refs/" | |
439 | }; | |
440 | static struct hashmap refs; | |
441 | static struct strbuf anon = STRBUF_INIT; | |
442 | int i; | |
443 | ||
444 | /* | |
445 | * We also leave "master" as a special case, since it does not reveal | |
446 | * anything interesting. | |
447 | */ | |
448 | if (!strcmp(refname, "refs/heads/master")) | |
449 | return refname; | |
450 | ||
451 | strbuf_reset(&anon); | |
452 | for (i = 0; i < ARRAY_SIZE(prefixes); i++) { | |
453 | if (skip_prefix(refname, prefixes[i], &refname)) { | |
454 | strbuf_addstr(&anon, prefixes[i]); | |
455 | break; | |
456 | } | |
457 | } | |
458 | ||
459 | anonymize_path(&anon, refname, &refs, anonymize_ref_component); | |
460 | return anon.buf; | |
461 | } | |
462 | ||
463 | /* | |
464 | * We do not even bother to cache commit messages, as they are unlikely | |
465 | * to be repeated verbatim, and it is not that interesting when they are. | |
466 | */ | |
467 | static char *anonymize_commit_message(const char *old) | |
468 | { | |
469 | static int counter; | |
470 | return xstrfmt("subject %d\n\nbody\n", counter++); | |
471 | } | |
472 | ||
473 | static struct hashmap idents; | |
474 | static void *anonymize_ident(const void *old, size_t *len) | |
475 | { | |
476 | static int counter; | |
477 | struct strbuf out = STRBUF_INIT; | |
478 | strbuf_addf(&out, "User %d <user%d@example.com>", counter, counter); | |
479 | counter++; | |
480 | return strbuf_detach(&out, len); | |
481 | } | |
482 | ||
483 | /* | |
484 | * Our strategy here is to anonymize the names and email addresses, | |
485 | * but keep timestamps intact, as they influence things like traversal | |
486 | * order (and by themselves should not be too revealing). | |
487 | */ | |
488 | static void anonymize_ident_line(const char **beg, const char **end) | |
489 | { | |
490 | static struct strbuf buffers[] = { STRBUF_INIT, STRBUF_INIT }; | |
491 | static unsigned which_buffer; | |
492 | ||
493 | struct strbuf *out; | |
494 | struct ident_split split; | |
495 | const char *end_of_header; | |
496 | ||
497 | out = &buffers[which_buffer++]; | |
498 | which_buffer %= ARRAY_SIZE(buffers); | |
499 | strbuf_reset(out); | |
500 | ||
501 | /* skip "committer", "author", "tagger", etc */ | |
502 | end_of_header = strchr(*beg, ' '); | |
503 | if (!end_of_header) | |
504 | die("BUG: malformed line fed to anonymize_ident_line: %.*s", | |
505 | (int)(*end - *beg), *beg); | |
506 | end_of_header++; | |
507 | strbuf_add(out, *beg, end_of_header - *beg); | |
508 | ||
509 | if (!split_ident_line(&split, end_of_header, *end - end_of_header) && | |
510 | split.date_begin) { | |
511 | const char *ident; | |
512 | size_t len; | |
513 | ||
514 | len = split.mail_end - split.name_begin; | |
515 | ident = anonymize_mem(&idents, anonymize_ident, | |
516 | split.name_begin, &len); | |
517 | strbuf_add(out, ident, len); | |
518 | strbuf_addch(out, ' '); | |
519 | strbuf_add(out, split.date_begin, split.tz_end - split.date_begin); | |
520 | } else { | |
521 | strbuf_addstr(out, "Malformed Ident <malformed@example.com> 0 -0000"); | |
522 | } | |
523 | ||
524 | *beg = out->buf; | |
525 | *end = out->buf + out->len; | |
526 | } | |
527 | ||
f2dc849e JS |
528 | static void handle_commit(struct commit *commit, struct rev_info *rev) |
529 | { | |
530 | int saved_output_format = rev->diffopt.output_format; | |
bc6b8fc1 | 531 | const char *commit_buffer; |
f2dc849e JS |
532 | const char *author, *author_end, *committer, *committer_end; |
533 | const char *encoding, *message; | |
534 | char *reencoded = NULL; | |
535 | struct commit_list *p; | |
a8722750 | 536 | const char *refname; |
f2dc849e JS |
537 | int i; |
538 | ||
539 | rev->diffopt.output_format = DIFF_FORMAT_CALLBACK; | |
540 | ||
683ff884 | 541 | parse_commit_or_die(commit); |
8597ea3a | 542 | commit_buffer = get_commit_buffer(commit, NULL); |
bc6b8fc1 | 543 | author = strstr(commit_buffer, "\nauthor "); |
f2dc849e JS |
544 | if (!author) |
545 | die ("Could not find author in commit %s", | |
546 | sha1_to_hex(commit->object.sha1)); | |
547 | author++; | |
548 | author_end = strchrnul(author, '\n'); | |
549 | committer = strstr(author_end, "\ncommitter "); | |
550 | if (!committer) | |
551 | die ("Could not find committer in commit %s", | |
552 | sha1_to_hex(commit->object.sha1)); | |
553 | committer++; | |
554 | committer_end = strchrnul(committer, '\n'); | |
555 | message = strstr(committer_end, "\n\n"); | |
556 | encoding = find_encoding(committer_end, message); | |
557 | if (message) | |
558 | message += 2; | |
559 | ||
ebeec7db | 560 | if (commit->parents && |
4087a02e EN |
561 | get_object_mark(&commit->parents->item->object) != 0 && |
562 | !full_tree) { | |
683ff884 | 563 | parse_commit_or_die(commit->parents->item); |
f2dc849e JS |
564 | diff_tree_sha1(commit->parents->item->tree->object.sha1, |
565 | commit->tree->object.sha1, "", &rev->diffopt); | |
566 | } | |
567 | else | |
568 | diff_root_tree_sha1(commit->tree->object.sha1, | |
569 | "", &rev->diffopt); | |
570 | ||
03db4525 | 571 | /* Export the referenced blobs, and remember the marks. */ |
f2dc849e | 572 | for (i = 0; i < diff_queued_diff.nr; i++) |
03db4525 | 573 | if (!S_ISGITLINK(diff_queued_diff.queue[i]->two->mode)) |
f9b54e26 | 574 | export_blob(diff_queued_diff.queue[i]->two->sha1); |
f2dc849e | 575 | |
a8722750 JK |
576 | refname = commit->util; |
577 | if (anonymize) { | |
578 | refname = anonymize_refname(refname); | |
579 | anonymize_ident_line(&committer, &committer_end); | |
580 | anonymize_ident_line(&author, &author_end); | |
581 | } | |
582 | ||
df6a7ff7 | 583 | mark_next_object(&commit->object); |
a8722750 JK |
584 | if (anonymize) |
585 | reencoded = anonymize_commit_message(message); | |
586 | else if (!is_encoding_utf8(encoding)) | |
f2dc849e | 587 | reencoded = reencode_string(message, "UTF-8", encoding); |
d8933f01 | 588 | if (!commit->parents) |
a8722750 | 589 | printf("reset %s\n", refname); |
6e1c2344 | 590 | printf("commit %s\nmark :%"PRIu32"\n%.*s\n%.*s\ndata %u\n%s", |
a8722750 | 591 | refname, last_idnum, |
f2dc849e JS |
592 | (int)(author_end - author), author, |
593 | (int)(committer_end - committer), committer, | |
594 | (unsigned)(reencoded | |
595 | ? strlen(reencoded) : message | |
596 | ? strlen(message) : 0), | |
597 | reencoded ? reencoded : message ? message : ""); | |
8e0f7003 | 598 | free(reencoded); |
bc6b8fc1 | 599 | unuse_commit_buffer(commit, commit_buffer); |
f2dc849e JS |
600 | |
601 | for (i = 0, p = commit->parents; p; p = p->next) { | |
602 | int mark = get_object_mark(&p->item->object); | |
603 | if (!mark) | |
604 | continue; | |
605 | if (i == 0) | |
606 | printf("from :%d\n", mark); | |
f2dc849e | 607 | else |
5070b49e | 608 | printf("merge :%d\n", mark); |
f2dc849e JS |
609 | i++; |
610 | } | |
f2dc849e | 611 | |
4087a02e EN |
612 | if (full_tree) |
613 | printf("deleteall\n"); | |
f2dc849e JS |
614 | log_tree_diff_flush(rev); |
615 | rev->diffopt.output_format = saved_output_format; | |
616 | ||
617 | printf("\n"); | |
618 | ||
619 | show_progress(); | |
620 | } | |
621 | ||
a8722750 JK |
622 | static void *anonymize_tag(const void *old, size_t *len) |
623 | { | |
624 | static int counter; | |
625 | struct strbuf out = STRBUF_INIT; | |
626 | strbuf_addf(&out, "tag message %d", counter++); | |
627 | return strbuf_detach(&out, len); | |
628 | } | |
629 | ||
f2dc849e JS |
630 | static void handle_tail(struct object_array *commits, struct rev_info *revs) |
631 | { | |
632 | struct commit *commit; | |
633 | while (commits->nr) { | |
634 | commit = (struct commit *)commits->objects[commits->nr - 1].item; | |
635 | if (has_unshown_parent(commit)) | |
636 | return; | |
637 | handle_commit(commit, revs); | |
638 | commits->nr--; | |
639 | } | |
640 | } | |
641 | ||
642 | static void handle_tag(const char *name, struct tag *tag) | |
643 | { | |
644 | unsigned long size; | |
645 | enum object_type type; | |
646 | char *buf; | |
647 | const char *tagger, *tagger_end, *message; | |
648 | size_t message_size = 0; | |
02c48cd6 | 649 | struct object *tagged; |
2d8ad469 EN |
650 | int tagged_mark; |
651 | struct commit *p; | |
02c48cd6 | 652 | |
98e023de | 653 | /* Trees have no identifier in fast-export output, thus we have no way |
02c48cd6 EN |
654 | * to output tags of trees, tags of tags of trees, etc. Simply omit |
655 | * such tags. | |
656 | */ | |
657 | tagged = tag->tagged; | |
658 | while (tagged->type == OBJ_TAG) { | |
659 | tagged = ((struct tag *)tagged)->tagged; | |
660 | } | |
661 | if (tagged->type == OBJ_TREE) { | |
662 | warning("Omitting tag %s,\nsince tags of trees (or tags of tags of trees, etc.) are not supported.", | |
663 | sha1_to_hex(tag->object.sha1)); | |
664 | return; | |
665 | } | |
f2dc849e JS |
666 | |
667 | buf = read_sha1_file(tag->object.sha1, &type, &size); | |
668 | if (!buf) | |
669 | die ("Could not read tag %s", sha1_to_hex(tag->object.sha1)); | |
670 | message = memmem(buf, size, "\n\n", 2); | |
671 | if (message) { | |
672 | message += 2; | |
673 | message_size = strlen(message); | |
674 | } | |
675 | tagger = memmem(buf, message ? message - buf : size, "\ntagger ", 8); | |
4e46a8d6 JS |
676 | if (!tagger) { |
677 | if (fake_missing_tagger) | |
678 | tagger = "tagger Unspecified Tagger " | |
679 | "<unspecified-tagger> 0 +0000"; | |
680 | else | |
681 | tagger = ""; | |
682 | tagger_end = tagger + strlen(tagger); | |
683 | } else { | |
684 | tagger++; | |
685 | tagger_end = strchrnul(tagger, '\n'); | |
a8722750 JK |
686 | if (anonymize) |
687 | anonymize_ident_line(&tagger, &tagger_end); | |
688 | } | |
689 | ||
690 | if (anonymize) { | |
691 | name = anonymize_refname(name); | |
692 | if (message) { | |
693 | static struct hashmap tags; | |
694 | message = anonymize_mem(&tags, anonymize_tag, | |
695 | message, &message_size); | |
696 | } | |
4e46a8d6 | 697 | } |
f2dc849e JS |
698 | |
699 | /* handle signed tags */ | |
700 | if (message) { | |
701 | const char *signature = strstr(message, | |
702 | "\n-----BEGIN PGP SIGNATURE-----\n"); | |
703 | if (signature) | |
704 | switch(signed_tag_mode) { | |
705 | case ABORT: | |
706 | die ("Encountered signed tag %s; use " | |
04a74b6c | 707 | "--signed-tags=<mode> to handle it.", |
f2dc849e JS |
708 | sha1_to_hex(tag->object.sha1)); |
709 | case WARN: | |
710 | warning ("Exporting signed tag %s", | |
711 | sha1_to_hex(tag->object.sha1)); | |
712 | /* fallthru */ | |
ee4bc371 | 713 | case VERBATIM: |
f2dc849e | 714 | break; |
cd16c59b JK |
715 | case WARN_STRIP: |
716 | warning ("Stripping signature from tag %s", | |
717 | sha1_to_hex(tag->object.sha1)); | |
718 | /* fallthru */ | |
f2dc849e JS |
719 | case STRIP: |
720 | message_size = signature + 1 - message; | |
721 | break; | |
722 | } | |
723 | } | |
724 | ||
2d8ad469 EN |
725 | /* handle tag->tagged having been filtered out due to paths specified */ |
726 | tagged = tag->tagged; | |
727 | tagged_mark = get_object_mark(tagged); | |
728 | if (!tagged_mark) { | |
729 | switch(tag_of_filtered_mode) { | |
730 | case ABORT: | |
731 | die ("Tag %s tags unexported object; use " | |
732 | "--tag-of-filtered-object=<mode> to handle it.", | |
733 | sha1_to_hex(tag->object.sha1)); | |
734 | case DROP: | |
735 | /* Ignore this tag altogether */ | |
736 | return; | |
737 | case REWRITE: | |
738 | if (tagged->type != OBJ_COMMIT) { | |
739 | die ("Tag %s tags unexported %s!", | |
740 | sha1_to_hex(tag->object.sha1), | |
741 | typename(tagged->type)); | |
742 | } | |
743 | p = (struct commit *)tagged; | |
744 | for (;;) { | |
745 | if (p->parents && p->parents->next) | |
746 | break; | |
747 | if (p->object.flags & UNINTERESTING) | |
748 | break; | |
749 | if (!(p->object.flags & TREESAME)) | |
750 | break; | |
751 | if (!p->parents) | |
752 | die ("Can't find replacement commit for tag %s\n", | |
753 | sha1_to_hex(tag->object.sha1)); | |
754 | p = p->parents->item; | |
755 | } | |
756 | tagged_mark = get_object_mark(&p->object); | |
757 | } | |
758 | } | |
759 | ||
59556548 | 760 | if (starts_with(name, "refs/tags/")) |
f2dc849e | 761 | name += 10; |
4e46a8d6 | 762 | printf("tag %s\nfrom :%d\n%.*s%sdata %d\n%.*s\n", |
2d8ad469 | 763 | name, tagged_mark, |
f2dc849e | 764 | (int)(tagger_end - tagger), tagger, |
4e46a8d6 | 765 | tagger == tagger_end ? "" : "\n", |
f2dc849e JS |
766 | (int)message_size, (int)message_size, message ? message : ""); |
767 | } | |
768 | ||
3e9b9cb1 FC |
769 | static struct commit *get_commit(struct rev_cmdline_entry *e, char *full_name) |
770 | { | |
771 | switch (e->item->type) { | |
772 | case OBJ_COMMIT: | |
773 | return (struct commit *)e->item; | |
774 | case OBJ_TAG: { | |
775 | struct tag *tag = (struct tag *)e->item; | |
776 | ||
777 | /* handle nested tags */ | |
778 | while (tag && tag->object.type == OBJ_TAG) { | |
779 | parse_object(tag->object.sha1); | |
780 | string_list_append(&extra_refs, full_name)->util = tag; | |
781 | tag = (struct tag *)tag->tagged; | |
782 | } | |
783 | if (!tag) | |
784 | die("Tag %s points nowhere?", e->name); | |
785 | return (struct commit *)tag; | |
786 | break; | |
787 | } | |
788 | default: | |
789 | return NULL; | |
790 | } | |
791 | } | |
792 | ||
1d844ee7 | 793 | static void get_tags_and_duplicates(struct rev_cmdline_info *info) |
f2dc849e | 794 | { |
f2dc849e JS |
795 | int i; |
796 | ||
49266e8a FC |
797 | for (i = 0; i < info->nr; i++) { |
798 | struct rev_cmdline_entry *e = info->rev + i; | |
f2dc849e | 799 | unsigned char sha1[20]; |
2d242de4 | 800 | struct commit *commit; |
f2dc849e JS |
801 | char *full_name; |
802 | ||
49266e8a FC |
803 | if (e->flags & UNINTERESTING) |
804 | continue; | |
805 | ||
f2dc849e JS |
806 | if (dwim_ref(e->name, strlen(e->name), sha1, &full_name) != 1) |
807 | continue; | |
808 | ||
03e9010c FC |
809 | if (refspecs) { |
810 | char *private; | |
811 | private = apply_refspecs(refspecs, refspecs_nr, full_name); | |
812 | if (private) { | |
813 | free(full_name); | |
814 | full_name = private; | |
815 | } | |
816 | } | |
817 | ||
3e9b9cb1 FC |
818 | commit = get_commit(e, full_name); |
819 | if (!commit) { | |
2d07f6d4 EFL |
820 | warning("%s: Unexpected object of type %s, skipping.", |
821 | e->name, | |
822 | typename(e->item->type)); | |
823 | continue; | |
f2dc849e | 824 | } |
f28e7c90 | 825 | |
3e9b9cb1 FC |
826 | switch(commit->object.type) { |
827 | case OBJ_COMMIT: | |
828 | break; | |
829 | case OBJ_BLOB: | |
830 | export_blob(commit->object.sha1); | |
831 | continue; | |
832 | default: /* OBJ_TAG (nested tags) is already handled */ | |
833 | warning("Tag points to object of unexpected type %s, skipping.", | |
834 | typename(commit->object.type)); | |
835 | continue; | |
836 | } | |
837 | ||
f28e7c90 FC |
838 | /* |
839 | * This ref will not be updated through a commit, lets make | |
840 | * sure it gets properly updated eventually. | |
841 | */ | |
842 | if (commit->util || commit->object.flags & SHOWN) | |
1d844ee7 | 843 | string_list_append(&extra_refs, full_name)->util = commit; |
f28e7c90 | 844 | if (!commit->util) |
f2dc849e JS |
845 | commit->util = full_name; |
846 | } | |
847 | } | |
848 | ||
1d844ee7 | 849 | static void handle_tags_and_duplicates(void) |
f2dc849e JS |
850 | { |
851 | struct commit *commit; | |
852 | int i; | |
853 | ||
1d844ee7 FC |
854 | for (i = extra_refs.nr - 1; i >= 0; i--) { |
855 | const char *name = extra_refs.items[i].string; | |
856 | struct object *object = extra_refs.items[i].util; | |
f2dc849e JS |
857 | switch (object->type) { |
858 | case OBJ_TAG: | |
859 | handle_tag(name, (struct tag *)object); | |
860 | break; | |
861 | case OBJ_COMMIT: | |
a8722750 JK |
862 | if (anonymize) |
863 | name = anonymize_refname(name); | |
f2dc849e JS |
864 | /* create refs pointing to already seen commits */ |
865 | commit = (struct commit *)object; | |
866 | printf("reset %s\nfrom :%d\n\n", name, | |
867 | get_object_mark(&commit->object)); | |
868 | show_progress(); | |
869 | break; | |
870 | } | |
871 | } | |
872 | } | |
873 | ||
df6a7ff7 PB |
874 | static void export_marks(char *file) |
875 | { | |
876 | unsigned int i; | |
877 | uint32_t mark; | |
878 | struct object_decoration *deco = idnums.hash; | |
879 | FILE *f; | |
96d69b55 | 880 | int e = 0; |
df6a7ff7 PB |
881 | |
882 | f = fopen(file, "w"); | |
883 | if (!f) | |
bb6ad28c | 884 | die_errno("Unable to open marks file %s for writing.", file); |
df6a7ff7 | 885 | |
69913575 JH |
886 | for (i = 0; i < idnums.size; i++) { |
887 | if (deco->base && deco->base->type == 1) { | |
df6a7ff7 | 888 | mark = ptr_to_mark(deco->decoration); |
96d69b55 MA |
889 | if (fprintf(f, ":%"PRIu32" %s\n", mark, |
890 | sha1_to_hex(deco->base->sha1)) < 0) { | |
891 | e = 1; | |
892 | break; | |
893 | } | |
df6a7ff7 | 894 | } |
69913575 | 895 | deco++; |
df6a7ff7 PB |
896 | } |
897 | ||
96d69b55 MA |
898 | e |= ferror(f); |
899 | e |= fclose(f); | |
900 | if (e) | |
df6a7ff7 PB |
901 | error("Unable to write marks file %s.", file); |
902 | } | |
903 | ||
69913575 | 904 | static void import_marks(char *input_file) |
df6a7ff7 PB |
905 | { |
906 | char line[512]; | |
907 | FILE *f = fopen(input_file, "r"); | |
908 | if (!f) | |
d824cbba | 909 | die_errno("cannot read '%s'", input_file); |
df6a7ff7 PB |
910 | |
911 | while (fgets(line, sizeof(line), f)) { | |
912 | uint32_t mark; | |
913 | char *line_end, *mark_end; | |
914 | unsigned char sha1[20]; | |
915 | struct object *object; | |
47bd9bf8 | 916 | struct commit *commit; |
e6812cfa | 917 | enum object_type type; |
df6a7ff7 PB |
918 | |
919 | line_end = strchr(line, '\n'); | |
920 | if (line[0] != ':' || !line_end) | |
921 | die("corrupt mark line: %s", line); | |
69913575 | 922 | *line_end = '\0'; |
df6a7ff7 PB |
923 | |
924 | mark = strtoumax(line + 1, &mark_end, 10); | |
925 | if (!mark || mark_end == line + 1 | |
45c5d4a5 | 926 | || *mark_end != ' ' || get_sha1_hex(mark_end + 1, sha1)) |
df6a7ff7 PB |
927 | die("corrupt mark line: %s", line); |
928 | ||
c4458ecd AP |
929 | if (last_idnum < mark) |
930 | last_idnum = mark; | |
931 | ||
e6812cfa FC |
932 | type = sha1_object_info(sha1, NULL); |
933 | if (type < 0) | |
934 | die("object not found: %s", sha1_to_hex(sha1)); | |
935 | ||
936 | if (type != OBJ_COMMIT) | |
937 | /* only commits */ | |
c4458ecd | 938 | continue; |
df6a7ff7 | 939 | |
47bd9bf8 FC |
940 | commit = lookup_commit(sha1); |
941 | if (!commit) | |
942 | die("not a commit? can't happen: %s", sha1_to_hex(sha1)); | |
943 | ||
944 | object = &commit->object; | |
e6812cfa | 945 | |
df6a7ff7 | 946 | if (object->flags & SHOWN) |
43bc2302 | 947 | error("Object %s already has a mark", sha1_to_hex(sha1)); |
df6a7ff7 PB |
948 | |
949 | mark_object(object, mark); | |
df6a7ff7 PB |
950 | |
951 | object->flags |= SHOWN; | |
952 | } | |
953 | fclose(f); | |
954 | } | |
955 | ||
60ed2643 FC |
956 | static void handle_deletes(void) |
957 | { | |
958 | int i; | |
959 | for (i = 0; i < refspecs_nr; i++) { | |
960 | struct refspec *refspec = &refspecs[i]; | |
961 | if (*refspec->src) | |
962 | continue; | |
963 | ||
964 | printf("reset %s\nfrom %s\n\n", | |
965 | refspec->dst, sha1_to_hex(null_sha1)); | |
966 | } | |
967 | } | |
968 | ||
f2dc849e JS |
969 | int cmd_fast_export(int argc, const char **argv, const char *prefix) |
970 | { | |
971 | struct rev_info revs; | |
3cd47459 | 972 | struct object_array commits = OBJECT_ARRAY_INIT; |
f2dc849e | 973 | struct commit *commit; |
df6a7ff7 | 974 | char *export_filename = NULL, *import_filename = NULL; |
c4458ecd | 975 | uint32_t lastimportid; |
03e9010c | 976 | struct string_list refspecs_list = STRING_LIST_INIT_NODUP; |
f2dc849e JS |
977 | struct option options[] = { |
978 | OPT_INTEGER(0, "progress", &progress, | |
3b787b96 NTND |
979 | N_("show progress after <n> objects")), |
980 | OPT_CALLBACK(0, "signed-tags", &signed_tag_mode, N_("mode"), | |
981 | N_("select handling of signed tags"), | |
f2dc849e | 982 | parse_opt_signed_tag_mode), |
3b787b96 NTND |
983 | OPT_CALLBACK(0, "tag-of-filtered-object", &tag_of_filtered_mode, N_("mode"), |
984 | N_("select handling of tags that tag filtered objects"), | |
2d8ad469 | 985 | parse_opt_tag_of_filtered_mode), |
3b787b96 NTND |
986 | OPT_STRING(0, "export-marks", &export_filename, N_("file"), |
987 | N_("Dump marks to this file")), | |
988 | OPT_STRING(0, "import-marks", &import_filename, N_("file"), | |
989 | N_("Import marks from this file")), | |
d5d09d47 SB |
990 | OPT_BOOL(0, "fake-missing-tagger", &fake_missing_tagger, |
991 | N_("Fake a tagger when tags lack one")), | |
992 | OPT_BOOL(0, "full-tree", &full_tree, | |
993 | N_("Output full tree for each commit")), | |
994 | OPT_BOOL(0, "use-done-feature", &use_done_feature, | |
3b787b96 NTND |
995 | N_("Use the done feature to terminate the stream")), |
996 | OPT_BOOL(0, "no-data", &no_data, N_("Skip output of blob data")), | |
03e9010c FC |
997 | OPT_STRING_LIST(0, "refspec", &refspecs_list, N_("refspec"), |
998 | N_("Apply refspec to exported refs")), | |
a8722750 | 999 | OPT_BOOL(0, "anonymize", &anonymize, N_("anonymize output")), |
f2dc849e JS |
1000 | OPT_END() |
1001 | }; | |
1002 | ||
dcfdbdf0 MV |
1003 | if (argc == 1) |
1004 | usage_with_options (fast_export_usage, options); | |
1005 | ||
f2dc849e | 1006 | /* we handle encodings */ |
ef90d6d4 | 1007 | git_config(git_default_config, NULL); |
f2dc849e JS |
1008 | |
1009 | init_revisions(&revs, prefix); | |
668f3aa7 | 1010 | revs.topo_order = 1; |
2374502c | 1011 | revs.show_source = 1; |
32164131 | 1012 | revs.rewrite_parents = 1; |
8b2f86a7 FC |
1013 | argc = parse_options(argc, argv, prefix, options, fast_export_usage, |
1014 | PARSE_OPT_KEEP_ARGV0 | PARSE_OPT_KEEP_UNKNOWN); | |
f2dc849e | 1015 | argc = setup_revisions(argc, argv, &revs, NULL); |
f2dc849e JS |
1016 | if (argc > 1) |
1017 | usage_with_options (fast_export_usage, options); | |
1018 | ||
03e9010c FC |
1019 | if (refspecs_list.nr) { |
1020 | const char **refspecs_str; | |
1021 | int i; | |
1022 | ||
1023 | refspecs_str = xmalloc(sizeof(*refspecs_str) * refspecs_list.nr); | |
1024 | for (i = 0; i < refspecs_list.nr; i++) | |
1025 | refspecs_str[i] = refspecs_list.items[i].string; | |
1026 | ||
1027 | refspecs_nr = refspecs_list.nr; | |
1028 | refspecs = parse_fetch_refspec(refspecs_nr, refspecs_str); | |
1029 | ||
1030 | string_list_clear(&refspecs_list, 1); | |
1031 | free(refspecs_str); | |
1032 | } | |
1033 | ||
82670a5c SR |
1034 | if (use_done_feature) |
1035 | printf("feature done\n"); | |
1036 | ||
df6a7ff7 PB |
1037 | if (import_filename) |
1038 | import_marks(import_filename); | |
c4458ecd | 1039 | lastimportid = last_idnum; |
df6a7ff7 | 1040 | |
afe069d1 | 1041 | if (import_filename && revs.prune_data.nr) |
4087a02e EN |
1042 | full_tree = 1; |
1043 | ||
1d844ee7 | 1044 | get_tags_and_duplicates(&revs.cmdline); |
f2dc849e | 1045 | |
3d51e1b5 MK |
1046 | if (prepare_revision_walk(&revs)) |
1047 | die("revision walk setup failed"); | |
f2dc849e JS |
1048 | revs.diffopt.format_callback = show_filemodify; |
1049 | DIFF_OPT_SET(&revs.diffopt, RECURSIVE); | |
1050 | while ((commit = get_revision(&revs))) { | |
1051 | if (has_unshown_parent(commit)) { | |
f2dc849e | 1052 | add_object_array(&commit->object, NULL, &commits); |
f2dc849e JS |
1053 | } |
1054 | else { | |
1055 | handle_commit(commit, &revs); | |
1056 | handle_tail(&commits, &revs); | |
1057 | } | |
1058 | } | |
1059 | ||
1d844ee7 | 1060 | handle_tags_and_duplicates(); |
60ed2643 | 1061 | handle_deletes(); |
f2dc849e | 1062 | |
c4458ecd | 1063 | if (export_filename && lastimportid != last_idnum) |
df6a7ff7 PB |
1064 | export_marks(export_filename); |
1065 | ||
82670a5c SR |
1066 | if (use_done_feature) |
1067 | printf("done\n"); | |
1068 | ||
03e9010c FC |
1069 | free_refspec(refspecs_nr, refspecs); |
1070 | ||
f2dc849e JS |
1071 | return 0; |
1072 | } |