2 * "git fast-export" builtin command
4 * Copyright (C) 2007 Johannes E. Schindelin
17 #include "string-list.h"
19 #include "parse-options.h"
24 static const char *fast_export_usage
[] = {
25 N_("git fast-export [rev-list-opts]"),
30 static enum { ABORT
, VERBATIM
, WARN
, WARN_STRIP
, STRIP
} signed_tag_mode
= ABORT
;
31 static enum { ERROR
, DROP
, REWRITE
} tag_of_filtered_mode
= ERROR
;
32 static int fake_missing_tagger
;
33 static int use_done_feature
;
36 static struct string_list extra_refs
= STRING_LIST_INIT_NODUP
;
37 static struct refspec
*refspecs
;
38 static int refspecs_nr
;
41 static int parse_opt_signed_tag_mode(const struct option
*opt
,
42 const char *arg
, int unset
)
44 if (unset
|| !strcmp(arg
, "abort"))
45 signed_tag_mode
= ABORT
;
46 else if (!strcmp(arg
, "verbatim") || !strcmp(arg
, "ignore"))
47 signed_tag_mode
= VERBATIM
;
48 else if (!strcmp(arg
, "warn"))
49 signed_tag_mode
= WARN
;
50 else if (!strcmp(arg
, "warn-strip"))
51 signed_tag_mode
= WARN_STRIP
;
52 else if (!strcmp(arg
, "strip"))
53 signed_tag_mode
= STRIP
;
55 return error("Unknown signed-tags mode: %s", arg
);
59 static int parse_opt_tag_of_filtered_mode(const struct option
*opt
,
60 const char *arg
, int unset
)
62 if (unset
|| !strcmp(arg
, "abort"))
63 tag_of_filtered_mode
= ERROR
;
64 else if (!strcmp(arg
, "drop"))
65 tag_of_filtered_mode
= DROP
;
66 else if (!strcmp(arg
, "rewrite"))
67 tag_of_filtered_mode
= REWRITE
;
69 return error("Unknown tag-of-filtered mode: %s", arg
);
73 static struct decoration idnums
;
74 static uint32_t last_idnum
;
76 static int has_unshown_parent(struct commit
*commit
)
78 struct commit_list
*parent
;
80 for (parent
= commit
->parents
; parent
; parent
= parent
->next
)
81 if (!(parent
->item
->object
.flags
& SHOWN
) &&
82 !(parent
->item
->object
.flags
& UNINTERESTING
))
87 struct anonymized_entry
{
88 struct hashmap_entry hash
;
95 static int anonymized_entry_cmp(const void *va
, const void *vb
,
98 const struct anonymized_entry
*a
= va
, *b
= vb
;
99 return a
->orig_len
!= b
->orig_len
||
100 memcmp(a
->orig
, b
->orig
, a
->orig_len
);
104 * Basically keep a cache of X->Y so that we can repeatedly replace
105 * the same anonymized string with another. The actual generation
106 * is farmed out to the generate function.
108 static const void *anonymize_mem(struct hashmap
*map
,
109 void *(*generate
)(const void *, size_t *),
110 const void *orig
, size_t *len
)
112 struct anonymized_entry key
, *ret
;
115 hashmap_init(map
, anonymized_entry_cmp
, 0);
117 hashmap_entry_init(&key
, memhash(orig
, *len
));
120 ret
= hashmap_get(map
, &key
, NULL
);
123 ret
= xmalloc(sizeof(*ret
));
124 hashmap_entry_init(&ret
->hash
, key
.hash
.hash
);
125 ret
->orig
= xstrdup(orig
);
126 ret
->orig_len
= *len
;
127 ret
->anon
= generate(orig
, len
);
128 ret
->anon_len
= *len
;
129 hashmap_put(map
, ret
);
132 *len
= ret
->anon_len
;
137 * We anonymize each component of a path individually,
138 * so that paths a/b and a/c will share a common root.
139 * The paths are cached via anonymize_mem so that repeated
140 * lookups for "a" will yield the same value.
142 static void anonymize_path(struct strbuf
*out
, const char *path
,
144 void *(*generate
)(const void *, size_t *))
147 const char *end_of_component
= strchrnul(path
, '/');
148 size_t len
= end_of_component
- path
;
149 const char *c
= anonymize_mem(map
, generate
, path
, &len
);
150 strbuf_add(out
, c
, len
);
151 path
= end_of_component
;
153 strbuf_addch(out
, *path
++);
157 /* Since intptr_t is C99, we do not use it here */
158 static inline uint32_t *mark_to_ptr(uint32_t mark
)
160 return ((uint32_t *)NULL
) + mark
;
163 static inline uint32_t ptr_to_mark(void * mark
)
165 return (uint32_t *)mark
- (uint32_t *)NULL
;
168 static inline void mark_object(struct object
*object
, uint32_t mark
)
170 add_decoration(&idnums
, object
, mark_to_ptr(mark
));
173 static inline void mark_next_object(struct object
*object
)
175 mark_object(object
, ++last_idnum
);
178 static int get_object_mark(struct object
*object
)
180 void *decoration
= lookup_decoration(&idnums
, object
);
183 return ptr_to_mark(decoration
);
186 static void show_progress(void)
188 static int counter
= 0;
191 if ((++counter
% progress
) == 0)
192 printf("progress %d objects\n", counter
);
196 * Ideally we would want some transformation of the blob data here
197 * that is unreversible, but would still be the same size and have
198 * the same data relationship to other blobs (so that we get the same
199 * delta and packing behavior as the original). But the first and last
200 * requirements there are probably mutually exclusive, so let's take
201 * the easy way out for now, and just generate arbitrary content.
203 * There's no need to cache this result with anonymize_mem, since
204 * we already handle blob content caching with marks.
206 static char *anonymize_blob(unsigned long *size
)
209 struct strbuf out
= STRBUF_INIT
;
210 strbuf_addf(&out
, "anonymous blob %d", counter
++);
212 return strbuf_detach(&out
, NULL
);
215 static void export_blob(const struct object_id
*oid
)
218 enum object_type type
;
220 struct object
*object
;
226 if (is_null_oid(oid
))
229 object
= lookup_object(oid
->hash
);
230 if (object
&& object
->flags
& SHOWN
)
234 buf
= anonymize_blob(&size
);
235 object
= (struct object
*)lookup_blob(oid
);
238 buf
= read_sha1_file(oid
->hash
, &type
, &size
);
240 die ("Could not read blob %s", oid_to_hex(oid
));
241 if (check_sha1_signature(oid
->hash
, buf
, size
, typename(type
)) < 0)
242 die("sha1 mismatch in blob %s", oid_to_hex(oid
));
243 object
= parse_object_buffer(oid
, type
, size
, buf
, &eaten
);
247 die("Could not read blob %s", oid_to_hex(oid
));
249 mark_next_object(object
);
251 printf("blob\nmark :%"PRIu32
"\ndata %lu\n", last_idnum
, size
);
252 if (size
&& fwrite(buf
, size
, 1, stdout
) != 1)
253 die_errno ("Could not write blob '%s'", oid_to_hex(oid
));
258 object
->flags
|= SHOWN
;
263 static int depth_first(const void *a_
, const void *b_
)
265 const struct diff_filepair
*a
= *((const struct diff_filepair
**)a_
);
266 const struct diff_filepair
*b
= *((const struct diff_filepair
**)b_
);
267 const char *name_a
, *name_b
;
268 int len_a
, len_b
, len
;
271 name_a
= a
->one
? a
->one
->path
: a
->two
->path
;
272 name_b
= b
->one
? b
->one
->path
: b
->two
->path
;
274 len_a
= strlen(name_a
);
275 len_b
= strlen(name_b
);
276 len
= (len_a
< len_b
) ? len_a
: len_b
;
278 /* strcmp will sort 'd' before 'd/e', we want 'd/e' before 'd' */
279 cmp
= memcmp(name_a
, name_b
, len
);
286 * Move 'R'ename entries last so that all references of the file
287 * appear in the output before it is renamed (e.g., when a file
288 * was copied and renamed in the same commit).
290 return (a
->status
== 'R') - (b
->status
== 'R');
293 static void print_path_1(const char *path
)
295 int need_quote
= quote_c_style(path
, NULL
, NULL
, 0);
297 quote_c_style(path
, NULL
, stdout
, 0);
298 else if (strchr(path
, ' '))
299 printf("\"%s\"", path
);
304 static void *anonymize_path_component(const void *path
, size_t *len
)
307 struct strbuf out
= STRBUF_INIT
;
308 strbuf_addf(&out
, "path%d", counter
++);
309 return strbuf_detach(&out
, len
);
312 static void print_path(const char *path
)
317 static struct hashmap paths
;
318 static struct strbuf anon
= STRBUF_INIT
;
320 anonymize_path(&anon
, path
, &paths
, anonymize_path_component
);
321 print_path_1(anon
.buf
);
326 static void *generate_fake_oid(const void *old
, size_t *len
)
328 static uint32_t counter
= 1; /* avoid null sha1 */
329 unsigned char *out
= xcalloc(GIT_SHA1_RAWSZ
, 1);
330 put_be32(out
+ GIT_SHA1_RAWSZ
- 4, counter
++);
334 static const unsigned char *anonymize_sha1(const struct object_id
*oid
)
336 static struct hashmap sha1s
;
337 size_t len
= GIT_SHA1_RAWSZ
;
338 return anonymize_mem(&sha1s
, generate_fake_oid
, oid
, &len
);
341 static void show_filemodify(struct diff_queue_struct
*q
,
342 struct diff_options
*options
, void *data
)
347 * Handle files below a directory first, in case they are all deleted
348 * and the directory changes to a file or symlink.
350 QSORT(q
->queue
, q
->nr
, depth_first
);
352 for (i
= 0; i
< q
->nr
; i
++) {
353 struct diff_filespec
*ospec
= q
->queue
[i
]->one
;
354 struct diff_filespec
*spec
= q
->queue
[i
]->two
;
356 switch (q
->queue
[i
]->status
) {
357 case DIFF_STATUS_DELETED
:
359 print_path(spec
->path
);
363 case DIFF_STATUS_COPIED
:
364 case DIFF_STATUS_RENAMED
:
365 printf("%c ", q
->queue
[i
]->status
);
366 print_path(ospec
->path
);
368 print_path(spec
->path
);
371 if (!oidcmp(&ospec
->oid
, &spec
->oid
) &&
372 ospec
->mode
== spec
->mode
)
376 case DIFF_STATUS_TYPE_CHANGED
:
377 case DIFF_STATUS_MODIFIED
:
378 case DIFF_STATUS_ADDED
:
380 * Links refer to objects in another repositories;
381 * output the SHA-1 verbatim.
383 if (no_data
|| S_ISGITLINK(spec
->mode
))
384 printf("M %06o %s ", spec
->mode
,
385 sha1_to_hex(anonymize
?
386 anonymize_sha1(&spec
->oid
) :
389 struct object
*object
= lookup_object(spec
->oid
.hash
);
390 printf("M %06o :%d ", spec
->mode
,
391 get_object_mark(object
));
393 print_path(spec
->path
);
398 die("Unexpected comparison status '%c' for %s, %s",
400 ospec
->path
? ospec
->path
: "none",
401 spec
->path
? spec
->path
: "none");
406 static const char *find_encoding(const char *begin
, const char *end
)
408 const char *needle
= "\nencoding ";
411 bol
= memmem(begin
, end
? end
- begin
: strlen(begin
),
412 needle
, strlen(needle
));
414 return git_commit_encoding
;
415 bol
+= strlen(needle
);
416 eol
= strchrnul(bol
, '\n');
421 static void *anonymize_ref_component(const void *old
, size_t *len
)
424 struct strbuf out
= STRBUF_INIT
;
425 strbuf_addf(&out
, "ref%d", counter
++);
426 return strbuf_detach(&out
, len
);
429 static const char *anonymize_refname(const char *refname
)
432 * If any of these prefixes is found, we will leave it intact
433 * so that tags remain tags and so forth.
435 static const char *prefixes
[] = {
441 static struct hashmap refs
;
442 static struct strbuf anon
= STRBUF_INIT
;
446 * We also leave "master" as a special case, since it does not reveal
447 * anything interesting.
449 if (!strcmp(refname
, "refs/heads/master"))
453 for (i
= 0; i
< ARRAY_SIZE(prefixes
); i
++) {
454 if (skip_prefix(refname
, prefixes
[i
], &refname
)) {
455 strbuf_addstr(&anon
, prefixes
[i
]);
460 anonymize_path(&anon
, refname
, &refs
, anonymize_ref_component
);
465 * We do not even bother to cache commit messages, as they are unlikely
466 * to be repeated verbatim, and it is not that interesting when they are.
468 static char *anonymize_commit_message(const char *old
)
471 return xstrfmt("subject %d\n\nbody\n", counter
++);
474 static struct hashmap idents
;
475 static void *anonymize_ident(const void *old
, size_t *len
)
478 struct strbuf out
= STRBUF_INIT
;
479 strbuf_addf(&out
, "User %d <user%d@example.com>", counter
, counter
);
481 return strbuf_detach(&out
, len
);
485 * Our strategy here is to anonymize the names and email addresses,
486 * but keep timestamps intact, as they influence things like traversal
487 * order (and by themselves should not be too revealing).
489 static void anonymize_ident_line(const char **beg
, const char **end
)
491 static struct strbuf buffers
[] = { STRBUF_INIT
, STRBUF_INIT
};
492 static unsigned which_buffer
;
495 struct ident_split split
;
496 const char *end_of_header
;
498 out
= &buffers
[which_buffer
++];
499 which_buffer
%= ARRAY_SIZE(buffers
);
502 /* skip "committer", "author", "tagger", etc */
503 end_of_header
= strchr(*beg
, ' ');
505 die("BUG: malformed line fed to anonymize_ident_line: %.*s",
506 (int)(*end
- *beg
), *beg
);
508 strbuf_add(out
, *beg
, end_of_header
- *beg
);
510 if (!split_ident_line(&split
, end_of_header
, *end
- end_of_header
) &&
515 len
= split
.mail_end
- split
.name_begin
;
516 ident
= anonymize_mem(&idents
, anonymize_ident
,
517 split
.name_begin
, &len
);
518 strbuf_add(out
, ident
, len
);
519 strbuf_addch(out
, ' ');
520 strbuf_add(out
, split
.date_begin
, split
.tz_end
- split
.date_begin
);
522 strbuf_addstr(out
, "Malformed Ident <malformed@example.com> 0 -0000");
526 *end
= out
->buf
+ out
->len
;
529 static void handle_commit(struct commit
*commit
, struct rev_info
*rev
)
531 int saved_output_format
= rev
->diffopt
.output_format
;
532 const char *commit_buffer
;
533 const char *author
, *author_end
, *committer
, *committer_end
;
534 const char *encoding
, *message
;
535 char *reencoded
= NULL
;
536 struct commit_list
*p
;
540 rev
->diffopt
.output_format
= DIFF_FORMAT_CALLBACK
;
542 parse_commit_or_die(commit
);
543 commit_buffer
= get_commit_buffer(commit
, NULL
);
544 author
= strstr(commit_buffer
, "\nauthor ");
546 die ("Could not find author in commit %s",
547 oid_to_hex(&commit
->object
.oid
));
549 author_end
= strchrnul(author
, '\n');
550 committer
= strstr(author_end
, "\ncommitter ");
552 die ("Could not find committer in commit %s",
553 oid_to_hex(&commit
->object
.oid
));
555 committer_end
= strchrnul(committer
, '\n');
556 message
= strstr(committer_end
, "\n\n");
557 encoding
= find_encoding(committer_end
, message
);
561 if (commit
->parents
&&
562 get_object_mark(&commit
->parents
->item
->object
) != 0 &&
564 parse_commit_or_die(commit
->parents
->item
);
565 diff_tree_sha1(commit
->parents
->item
->tree
->object
.oid
.hash
,
566 commit
->tree
->object
.oid
.hash
, "", &rev
->diffopt
);
569 diff_root_tree_oid(&commit
->tree
->object
.oid
,
572 /* Export the referenced blobs, and remember the marks. */
573 for (i
= 0; i
< diff_queued_diff
.nr
; i
++)
574 if (!S_ISGITLINK(diff_queued_diff
.queue
[i
]->two
->mode
))
575 export_blob(&diff_queued_diff
.queue
[i
]->two
->oid
);
577 refname
= commit
->util
;
579 refname
= anonymize_refname(refname
);
580 anonymize_ident_line(&committer
, &committer_end
);
581 anonymize_ident_line(&author
, &author_end
);
584 mark_next_object(&commit
->object
);
586 reencoded
= anonymize_commit_message(message
);
587 else if (!is_encoding_utf8(encoding
))
588 reencoded
= reencode_string(message
, "UTF-8", encoding
);
589 if (!commit
->parents
)
590 printf("reset %s\n", refname
);
591 printf("commit %s\nmark :%"PRIu32
"\n%.*s\n%.*s\ndata %u\n%s",
593 (int)(author_end
- author
), author
,
594 (int)(committer_end
- committer
), committer
,
596 ? strlen(reencoded
) : message
597 ? strlen(message
) : 0),
598 reencoded
? reencoded
: message
? message
: "");
600 unuse_commit_buffer(commit
, commit_buffer
);
602 for (i
= 0, p
= commit
->parents
; p
; p
= p
->next
) {
603 int mark
= get_object_mark(&p
->item
->object
);
607 printf("from :%d\n", mark
);
609 printf("merge :%d\n", mark
);
614 printf("deleteall\n");
615 log_tree_diff_flush(rev
);
616 rev
->diffopt
.output_format
= saved_output_format
;
623 static void *anonymize_tag(const void *old
, size_t *len
)
626 struct strbuf out
= STRBUF_INIT
;
627 strbuf_addf(&out
, "tag message %d", counter
++);
628 return strbuf_detach(&out
, len
);
631 static void handle_tail(struct object_array
*commits
, struct rev_info
*revs
)
633 struct commit
*commit
;
634 while (commits
->nr
) {
635 commit
= (struct commit
*)commits
->objects
[commits
->nr
- 1].item
;
636 if (has_unshown_parent(commit
))
638 handle_commit(commit
, revs
);
643 static void handle_tag(const char *name
, struct tag
*tag
)
646 enum object_type type
;
648 const char *tagger
, *tagger_end
, *message
;
649 size_t message_size
= 0;
650 struct object
*tagged
;
654 /* Trees have no identifier in fast-export output, thus we have no way
655 * to output tags of trees, tags of tags of trees, etc. Simply omit
658 tagged
= tag
->tagged
;
659 while (tagged
->type
== OBJ_TAG
) {
660 tagged
= ((struct tag
*)tagged
)->tagged
;
662 if (tagged
->type
== OBJ_TREE
) {
663 warning("Omitting tag %s,\nsince tags of trees (or tags of tags of trees, etc.) are not supported.",
664 oid_to_hex(&tag
->object
.oid
));
668 buf
= read_sha1_file(tag
->object
.oid
.hash
, &type
, &size
);
670 die ("Could not read tag %s", oid_to_hex(&tag
->object
.oid
));
671 message
= memmem(buf
, size
, "\n\n", 2);
674 message_size
= strlen(message
);
676 tagger
= memmem(buf
, message
? message
- buf
: size
, "\ntagger ", 8);
678 if (fake_missing_tagger
)
679 tagger
= "tagger Unspecified Tagger "
680 "<unspecified-tagger> 0 +0000";
683 tagger_end
= tagger
+ strlen(tagger
);
686 tagger_end
= strchrnul(tagger
, '\n');
688 anonymize_ident_line(&tagger
, &tagger_end
);
692 name
= anonymize_refname(name
);
694 static struct hashmap tags
;
695 message
= anonymize_mem(&tags
, anonymize_tag
,
696 message
, &message_size
);
700 /* handle signed tags */
702 const char *signature
= strstr(message
,
703 "\n-----BEGIN PGP SIGNATURE-----\n");
705 switch(signed_tag_mode
) {
707 die ("Encountered signed tag %s; use "
708 "--signed-tags=<mode> to handle it.",
709 oid_to_hex(&tag
->object
.oid
));
711 warning ("Exporting signed tag %s",
712 oid_to_hex(&tag
->object
.oid
));
717 warning ("Stripping signature from tag %s",
718 oid_to_hex(&tag
->object
.oid
));
721 message_size
= signature
+ 1 - message
;
726 /* handle tag->tagged having been filtered out due to paths specified */
727 tagged
= tag
->tagged
;
728 tagged_mark
= get_object_mark(tagged
);
730 switch(tag_of_filtered_mode
) {
732 die ("Tag %s tags unexported object; use "
733 "--tag-of-filtered-object=<mode> to handle it.",
734 oid_to_hex(&tag
->object
.oid
));
736 /* Ignore this tag altogether */
740 if (tagged
->type
!= OBJ_COMMIT
) {
741 die ("Tag %s tags unexported %s!",
742 oid_to_hex(&tag
->object
.oid
),
743 typename(tagged
->type
));
745 p
= (struct commit
*)tagged
;
747 if (p
->parents
&& p
->parents
->next
)
749 if (p
->object
.flags
& UNINTERESTING
)
751 if (!(p
->object
.flags
& TREESAME
))
754 die ("Can't find replacement commit for tag %s\n",
755 oid_to_hex(&tag
->object
.oid
));
756 p
= p
->parents
->item
;
758 tagged_mark
= get_object_mark(&p
->object
);
762 if (starts_with(name
, "refs/tags/"))
764 printf("tag %s\nfrom :%d\n%.*s%sdata %d\n%.*s\n",
766 (int)(tagger_end
- tagger
), tagger
,
767 tagger
== tagger_end
? "" : "\n",
768 (int)message_size
, (int)message_size
, message
? message
: "");
772 static struct commit
*get_commit(struct rev_cmdline_entry
*e
, char *full_name
)
774 switch (e
->item
->type
) {
776 return (struct commit
*)e
->item
;
778 struct tag
*tag
= (struct tag
*)e
->item
;
780 /* handle nested tags */
781 while (tag
&& tag
->object
.type
== OBJ_TAG
) {
782 parse_object(&tag
->object
.oid
);
783 string_list_append(&extra_refs
, full_name
)->util
= tag
;
784 tag
= (struct tag
*)tag
->tagged
;
787 die("Tag %s points nowhere?", e
->name
);
788 return (struct commit
*)tag
;
796 static void get_tags_and_duplicates(struct rev_cmdline_info
*info
)
800 for (i
= 0; i
< info
->nr
; i
++) {
801 struct rev_cmdline_entry
*e
= info
->rev
+ i
;
802 struct object_id oid
;
803 struct commit
*commit
;
806 if (e
->flags
& UNINTERESTING
)
809 if (dwim_ref(e
->name
, strlen(e
->name
), oid
.hash
, &full_name
) != 1)
814 private = apply_refspecs(refspecs
, refspecs_nr
, full_name
);
821 commit
= get_commit(e
, full_name
);
823 warning("%s: Unexpected object of type %s, skipping.",
825 typename(e
->item
->type
));
829 switch(commit
->object
.type
) {
833 export_blob(&commit
->object
.oid
);
835 default: /* OBJ_TAG (nested tags) is already handled */
836 warning("Tag points to object of unexpected type %s, skipping.",
837 typename(commit
->object
.type
));
842 * This ref will not be updated through a commit, lets make
843 * sure it gets properly updated eventually.
845 if (commit
->util
|| commit
->object
.flags
& SHOWN
)
846 string_list_append(&extra_refs
, full_name
)->util
= commit
;
848 commit
->util
= full_name
;
852 static void handle_tags_and_duplicates(void)
854 struct commit
*commit
;
857 for (i
= extra_refs
.nr
- 1; i
>= 0; i
--) {
858 const char *name
= extra_refs
.items
[i
].string
;
859 struct object
*object
= extra_refs
.items
[i
].util
;
860 switch (object
->type
) {
862 handle_tag(name
, (struct tag
*)object
);
866 name
= anonymize_refname(name
);
867 /* create refs pointing to already seen commits */
868 commit
= (struct commit
*)object
;
869 printf("reset %s\nfrom :%d\n\n", name
,
870 get_object_mark(&commit
->object
));
877 static void export_marks(char *file
)
881 struct object_decoration
*deco
= idnums
.hash
;
885 f
= fopen_for_writing(file
);
887 die_errno("Unable to open marks file %s for writing.", file
);
889 for (i
= 0; i
< idnums
.size
; i
++) {
890 if (deco
->base
&& deco
->base
->type
== 1) {
891 mark
= ptr_to_mark(deco
->decoration
);
892 if (fprintf(f
, ":%"PRIu32
" %s\n", mark
,
893 oid_to_hex(&deco
->base
->oid
)) < 0) {
904 error("Unable to write marks file %s.", file
);
907 static void import_marks(char *input_file
)
910 FILE *f
= fopen(input_file
, "r");
912 die_errno("cannot read '%s'", input_file
);
914 while (fgets(line
, sizeof(line
), f
)) {
916 char *line_end
, *mark_end
;
917 struct object_id oid
;
918 struct object
*object
;
919 struct commit
*commit
;
920 enum object_type type
;
922 line_end
= strchr(line
, '\n');
923 if (line
[0] != ':' || !line_end
)
924 die("corrupt mark line: %s", line
);
927 mark
= strtoumax(line
+ 1, &mark_end
, 10);
928 if (!mark
|| mark_end
== line
+ 1
929 || *mark_end
!= ' ' || get_oid_hex(mark_end
+ 1, &oid
))
930 die("corrupt mark line: %s", line
);
932 if (last_idnum
< mark
)
935 type
= sha1_object_info(oid
.hash
, NULL
);
937 die("object not found: %s", oid_to_hex(&oid
));
939 if (type
!= OBJ_COMMIT
)
943 commit
= lookup_commit(&oid
);
945 die("not a commit? can't happen: %s", oid_to_hex(&oid
));
947 object
= &commit
->object
;
949 if (object
->flags
& SHOWN
)
950 error("Object %s already has a mark", oid_to_hex(&oid
));
952 mark_object(object
, mark
);
954 object
->flags
|= SHOWN
;
959 static void handle_deletes(void)
962 for (i
= 0; i
< refspecs_nr
; i
++) {
963 struct refspec
*refspec
= &refspecs
[i
];
967 printf("reset %s\nfrom %s\n\n",
968 refspec
->dst
, sha1_to_hex(null_sha1
));
972 int cmd_fast_export(int argc
, const char **argv
, const char *prefix
)
974 struct rev_info revs
;
975 struct object_array commits
= OBJECT_ARRAY_INIT
;
976 struct commit
*commit
;
977 char *export_filename
= NULL
, *import_filename
= NULL
;
978 uint32_t lastimportid
;
979 struct string_list refspecs_list
= STRING_LIST_INIT_NODUP
;
980 struct option options
[] = {
981 OPT_INTEGER(0, "progress", &progress
,
982 N_("show progress after <n> objects")),
983 OPT_CALLBACK(0, "signed-tags", &signed_tag_mode
, N_("mode"),
984 N_("select handling of signed tags"),
985 parse_opt_signed_tag_mode
),
986 OPT_CALLBACK(0, "tag-of-filtered-object", &tag_of_filtered_mode
, N_("mode"),
987 N_("select handling of tags that tag filtered objects"),
988 parse_opt_tag_of_filtered_mode
),
989 OPT_STRING(0, "export-marks", &export_filename
, N_("file"),
990 N_("Dump marks to this file")),
991 OPT_STRING(0, "import-marks", &import_filename
, N_("file"),
992 N_("Import marks from this file")),
993 OPT_BOOL(0, "fake-missing-tagger", &fake_missing_tagger
,
994 N_("Fake a tagger when tags lack one")),
995 OPT_BOOL(0, "full-tree", &full_tree
,
996 N_("Output full tree for each commit")),
997 OPT_BOOL(0, "use-done-feature", &use_done_feature
,
998 N_("Use the done feature to terminate the stream")),
999 OPT_BOOL(0, "no-data", &no_data
, N_("Skip output of blob data")),
1000 OPT_STRING_LIST(0, "refspec", &refspecs_list
, N_("refspec"),
1001 N_("Apply refspec to exported refs")),
1002 OPT_BOOL(0, "anonymize", &anonymize
, N_("anonymize output")),
1007 usage_with_options (fast_export_usage
, options
);
1009 /* we handle encodings */
1010 git_config(git_default_config
, NULL
);
1012 init_revisions(&revs
, prefix
);
1013 revs
.topo_order
= 1;
1014 revs
.show_source
= 1;
1015 revs
.rewrite_parents
= 1;
1016 argc
= parse_options(argc
, argv
, prefix
, options
, fast_export_usage
,
1017 PARSE_OPT_KEEP_ARGV0
| PARSE_OPT_KEEP_UNKNOWN
);
1018 argc
= setup_revisions(argc
, argv
, &revs
, NULL
);
1020 usage_with_options (fast_export_usage
, options
);
1022 if (refspecs_list
.nr
) {
1023 const char **refspecs_str
;
1026 ALLOC_ARRAY(refspecs_str
, refspecs_list
.nr
);
1027 for (i
= 0; i
< refspecs_list
.nr
; i
++)
1028 refspecs_str
[i
] = refspecs_list
.items
[i
].string
;
1030 refspecs_nr
= refspecs_list
.nr
;
1031 refspecs
= parse_fetch_refspec(refspecs_nr
, refspecs_str
);
1033 string_list_clear(&refspecs_list
, 1);
1037 if (use_done_feature
)
1038 printf("feature done\n");
1040 if (import_filename
)
1041 import_marks(import_filename
);
1042 lastimportid
= last_idnum
;
1044 if (import_filename
&& revs
.prune_data
.nr
)
1047 get_tags_and_duplicates(&revs
.cmdline
);
1049 if (prepare_revision_walk(&revs
))
1050 die("revision walk setup failed");
1051 revs
.diffopt
.format_callback
= show_filemodify
;
1052 DIFF_OPT_SET(&revs
.diffopt
, RECURSIVE
);
1053 while ((commit
= get_revision(&revs
))) {
1054 if (has_unshown_parent(commit
)) {
1055 add_object_array(&commit
->object
, NULL
, &commits
);
1058 handle_commit(commit
, &revs
);
1059 handle_tail(&commits
, &revs
);
1063 handle_tags_and_duplicates();
1066 if (export_filename
&& lastimportid
!= last_idnum
)
1067 export_marks(export_filename
);
1069 if (use_done_feature
)
1072 free_refspec(refspecs_nr
, refspecs
);