2 * Copyright (C) 2009-2012 the libgit2 contributors
4 * This file is part of libgit2, distributed under the GNU GPL v2 with
5 * a Linking Exception. For full terms see the included COPYING file.
10 #include "repository.h"
16 #include <git2/object.h>
18 #include <git2/branch.h>
22 #define DEFAULT_NESTING_LEVEL 5
23 #define MAX_NESTING_LEVEL 10
26 GIT_PACKREF_HAS_PEEL
= 1,
27 GIT_PACKREF_WAS_LOOSE
= 2
34 char name
[GIT_FLEX_ARRAY
];
37 static int reference_read(
38 git_buf
*file_content
,
40 const char *repo_path
,
45 static int loose_parse_symbolic(git_reference
*ref
, git_buf
*file_content
);
46 static int loose_parse_oid(git_oid
*ref
, git_buf
*file_content
);
47 static int loose_lookup(git_reference
*ref
);
48 static int loose_lookup_to_packfile(struct packref
**ref_out
,
49 git_repository
*repo
, const char *name
);
50 static int loose_write(git_reference
*ref
);
53 static int packed_parse_peel(struct packref
*tag_ref
,
54 const char **buffer_out
, const char *buffer_end
);
55 static int packed_parse_oid(struct packref
**ref_out
,
56 const char **buffer_out
, const char *buffer_end
);
57 static int packed_load(git_repository
*repo
);
58 static int packed_loadloose(git_repository
*repository
);
59 static int packed_write_ref(struct packref
*ref
, git_filebuf
*file
);
60 static int packed_find_peel(git_repository
*repo
, struct packref
*ref
);
61 static int packed_remove_loose(git_repository
*repo
, git_vector
*packing_list
);
62 static int packed_sort(const void *a
, const void *b
);
63 static int packed_lookup(git_reference
*ref
);
64 static int packed_write(git_repository
*repo
);
66 /* internal helpers */
67 static int reference_path_available(git_repository
*repo
,
68 const char *ref
, const char *old_ref
);
69 static int reference_delete(git_reference
*ref
);
70 static int reference_lookup(git_reference
*ref
);
72 void git_reference_free(git_reference
*reference
)
74 if (reference
== NULL
)
77 git__free(reference
->name
);
78 reference
->name
= NULL
;
80 if (reference
->flags
& GIT_REF_SYMBOLIC
) {
81 git__free(reference
->target
.symbolic
);
82 reference
->target
.symbolic
= NULL
;
88 static int reference_alloc(
89 git_reference
**ref_out
,
93 git_reference
*reference
= NULL
;
95 assert(ref_out
&& repo
&& name
);
97 reference
= git__malloc(sizeof(git_reference
));
98 GITERR_CHECK_ALLOC(reference
);
100 memset(reference
, 0x0, sizeof(git_reference
));
101 reference
->owner
= repo
;
103 reference
->name
= git__strdup(name
);
104 GITERR_CHECK_ALLOC(reference
->name
);
106 *ref_out
= reference
;
110 static int reference_read(
111 git_buf
*file_content
,
113 const char *repo_path
,
114 const char *ref_name
,
117 git_buf path
= GIT_BUF_INIT
;
120 assert(file_content
&& repo_path
&& ref_name
);
122 /* Determine the full path of the file */
123 if (git_buf_joinpath(&path
, repo_path
, ref_name
) < 0)
126 result
= git_futils_readbuffer_updated(
127 file_content
, path
.ptr
, mtime
, NULL
, updated
);
133 static int loose_parse_symbolic(git_reference
*ref
, git_buf
*file_content
)
135 const unsigned int header_len
= (unsigned int)strlen(GIT_SYMREF
);
136 const char *refname_start
;
138 refname_start
= (const char *)file_content
->ptr
;
140 if (git_buf_len(file_content
) < header_len
+ 1) {
141 giterr_set(GITERR_REFERENCE
, "Corrupted loose reference file");
146 * Assume we have already checked for the header
147 * before calling this function
149 refname_start
+= header_len
;
151 ref
->target
.symbolic
= git__strdup(refname_start
);
152 GITERR_CHECK_ALLOC(ref
->target
.symbolic
);
157 static int loose_parse_oid(git_oid
*oid
, git_buf
*file_content
)
162 len
= git_buf_len(file_content
);
163 if (len
< GIT_OID_HEXSZ
)
166 /* str is guranteed to be zero-terminated */
167 str
= git_buf_cstr(file_content
);
169 /* If the file is longer than 40 chars, the 41st must be a space */
170 if (git_oid_fromstr(oid
, git_buf_cstr(file_content
)) < 0)
173 /* If the file is longer than 40 chars, the 41st must be a space */
174 str
+= GIT_OID_HEXSZ
;
175 if (*str
== '\0' || git__isspace(*str
))
179 giterr_set(GITERR_REFERENCE
, "Corrupted loose reference file");
183 static git_ref_t
loose_guess_rtype(const git_buf
*full_path
)
185 git_buf ref_file
= GIT_BUF_INIT
;
188 type
= GIT_REF_INVALID
;
190 if (git_futils_readbuffer(&ref_file
, full_path
->ptr
) == 0) {
191 if (git__prefixcmp((const char *)(ref_file
.ptr
), GIT_SYMREF
) == 0)
192 type
= GIT_REF_SYMBOLIC
;
197 git_buf_free(&ref_file
);
201 static int loose_lookup(git_reference
*ref
)
204 git_buf ref_file
= GIT_BUF_INIT
;
206 result
= reference_read(&ref_file
, &ref
->mtime
,
207 ref
->owner
->path_repository
, ref
->name
, &updated
);
215 if (ref
->flags
& GIT_REF_SYMBOLIC
) {
216 git__free(ref
->target
.symbolic
);
217 ref
->target
.symbolic
= NULL
;
222 if (git__prefixcmp((const char *)(ref_file
.ptr
), GIT_SYMREF
) == 0) {
223 ref
->flags
|= GIT_REF_SYMBOLIC
;
224 git_buf_rtrim(&ref_file
);
225 result
= loose_parse_symbolic(ref
, &ref_file
);
227 ref
->flags
|= GIT_REF_OID
;
228 result
= loose_parse_oid(&ref
->target
.oid
, &ref_file
);
231 git_buf_free(&ref_file
);
235 static int loose_lookup_to_packfile(
236 struct packref
**ref_out
,
237 git_repository
*repo
,
240 git_buf ref_file
= GIT_BUF_INIT
;
241 struct packref
*ref
= NULL
;
246 if (reference_read(&ref_file
, NULL
, repo
->path_repository
, name
, NULL
) < 0)
249 git_buf_rtrim(&ref_file
);
251 name_len
= strlen(name
);
252 ref
= git__malloc(sizeof(struct packref
) + name_len
+ 1);
253 GITERR_CHECK_ALLOC(ref
);
255 memcpy(ref
->name
, name
, name_len
);
256 ref
->name
[name_len
] = 0;
258 if (loose_parse_oid(&ref
->oid
, &ref_file
) < 0) {
259 git_buf_free(&ref_file
);
264 ref
->flags
= GIT_PACKREF_WAS_LOOSE
;
267 git_buf_free(&ref_file
);
271 static int loose_write(git_reference
*ref
)
273 git_filebuf file
= GIT_FILEBUF_INIT
;
274 git_buf ref_path
= GIT_BUF_INIT
;
277 /* Remove a possibly existing empty directory hierarchy
278 * which name would collide with the reference name
280 if (git_futils_rmdir_r(ref
->name
, ref
->owner
->path_repository
,
281 GIT_RMDIR_SKIP_NONEMPTY
) < 0)
284 if (git_buf_joinpath(&ref_path
, ref
->owner
->path_repository
, ref
->name
) < 0)
287 if (git_filebuf_open(&file
, ref_path
.ptr
, GIT_FILEBUF_FORCE
) < 0) {
288 git_buf_free(&ref_path
);
292 git_buf_free(&ref_path
);
294 if (ref
->flags
& GIT_REF_OID
) {
295 char oid
[GIT_OID_HEXSZ
+ 1];
297 git_oid_fmt(oid
, &ref
->target
.oid
);
298 oid
[GIT_OID_HEXSZ
] = '\0';
300 git_filebuf_printf(&file
, "%s\n", oid
);
302 } else if (ref
->flags
& GIT_REF_SYMBOLIC
) {
303 git_filebuf_printf(&file
, GIT_SYMREF
"%s\n", ref
->target
.symbolic
);
305 assert(0); /* don't let this happen */
308 if (p_stat(ref_path
.ptr
, &st
) == 0)
309 ref
->mtime
= st
.st_mtime
;
311 return git_filebuf_commit(&file
, GIT_REFS_FILE_MODE
);
314 static int packed_parse_peel(
315 struct packref
*tag_ref
,
316 const char **buffer_out
,
317 const char *buffer_end
)
319 const char *buffer
= *buffer_out
+ 1;
321 assert(buffer
[-1] == '^');
323 /* Ensure it's not the first entry of the file */
327 /* Ensure reference is a tag */
328 if (git__prefixcmp(tag_ref
->name
, GIT_REFS_TAGS_DIR
) != 0)
331 if (buffer
+ GIT_OID_HEXSZ
>= buffer_end
)
334 /* Is this a valid object id? */
335 if (git_oid_fromstr(&tag_ref
->peel
, buffer
) < 0)
338 buffer
= buffer
+ GIT_OID_HEXSZ
;
345 *buffer_out
= buffer
+ 1;
349 giterr_set(GITERR_REFERENCE
, "The packed references file is corrupted");
353 static int packed_parse_oid(
354 struct packref
**ref_out
,
355 const char **buffer_out
,
356 const char *buffer_end
)
358 struct packref
*ref
= NULL
;
360 const char *buffer
= *buffer_out
;
361 const char *refname_begin
, *refname_end
;
366 refname_begin
= (buffer
+ GIT_OID_HEXSZ
+ 1);
367 if (refname_begin
>= buffer_end
|| refname_begin
[-1] != ' ')
370 /* Is this a valid object id? */
371 if (git_oid_fromstr(&id
, buffer
) < 0)
374 refname_end
= memchr(refname_begin
, '\n', buffer_end
- refname_begin
);
375 if (refname_end
== NULL
)
378 if (refname_end
[-1] == '\r')
381 refname_len
= refname_end
- refname_begin
;
383 ref
= git__malloc(sizeof(struct packref
) + refname_len
+ 1);
384 GITERR_CHECK_ALLOC(ref
);
386 memcpy(ref
->name
, refname_begin
, refname_len
);
387 ref
->name
[refname_len
] = 0;
389 git_oid_cpy(&ref
->oid
, &id
);
394 *buffer_out
= refname_end
+ 1;
400 giterr_set(GITERR_REFERENCE
, "The packed references file is corrupted");
404 static int packed_load(git_repository
*repo
)
407 git_buf packfile
= GIT_BUF_INIT
;
408 const char *buffer_start
, *buffer_end
;
409 git_refcache
*ref_cache
= &repo
->references
;
411 /* First we make sure we have allocated the hash table */
412 if (ref_cache
->packfile
== NULL
) {
413 ref_cache
->packfile
= git_strmap_alloc();
414 GITERR_CHECK_ALLOC(ref_cache
->packfile
);
417 result
= reference_read(&packfile
, &ref_cache
->packfile_time
,
418 repo
->path_repository
, GIT_PACKEDREFS_FILE
, &updated
);
421 * If we couldn't find the file, we need to clear the table and
422 * return. On any other error, we return that error. If everything
423 * went fine and the file wasn't updated, then there's nothing new
424 * for us here, so just return. Anything else means we need to
425 * refresh the packed refs.
427 if (result
== GIT_ENOTFOUND
) {
428 git_strmap_clear(ref_cache
->packfile
);
439 * At this point, we want to refresh the packed refs. We already
440 * have the contents in our buffer.
442 git_strmap_clear(ref_cache
->packfile
);
444 buffer_start
= (const char *)packfile
.ptr
;
445 buffer_end
= (const char *)(buffer_start
) + packfile
.size
;
447 while (buffer_start
< buffer_end
&& buffer_start
[0] == '#') {
448 buffer_start
= strchr(buffer_start
, '\n');
449 if (buffer_start
== NULL
)
455 while (buffer_start
< buffer_end
) {
457 struct packref
*ref
= NULL
;
459 if (packed_parse_oid(&ref
, &buffer_start
, buffer_end
) < 0)
462 if (buffer_start
[0] == '^') {
463 if (packed_parse_peel(ref
, &buffer_start
, buffer_end
) < 0)
467 git_strmap_insert(ref_cache
->packfile
, ref
->name
, ref
, err
);
472 git_buf_free(&packfile
);
476 git_strmap_free(ref_cache
->packfile
);
477 ref_cache
->packfile
= NULL
;
478 git_buf_free(&packfile
);
483 struct dirent_list_data
{
484 git_repository
*repo
;
485 size_t repo_path_len
;
486 unsigned int list_flags
;
488 int (*callback
)(const char *, void *);
489 void *callback_payload
;
493 static int _dirent_loose_listall(void *_data
, git_buf
*full_path
)
495 struct dirent_list_data
*data
= (struct dirent_list_data
*)_data
;
496 const char *file_path
= full_path
->ptr
+ data
->repo_path_len
;
498 if (git_path_isdir(full_path
->ptr
) == true)
499 return git_path_direach(full_path
, _dirent_loose_listall
, _data
);
501 /* do not add twice a reference that exists already in the packfile */
502 if ((data
->list_flags
& GIT_REF_PACKED
) != 0 &&
503 git_strmap_exists(data
->repo
->references
.packfile
, file_path
))
506 if (data
->list_flags
!= GIT_REF_LISTALL
) {
507 if ((data
->list_flags
& loose_guess_rtype(full_path
)) == 0)
508 return 0; /* we are filtering out this reference */
511 /* Locked references aren't returned */
512 if (!git__suffixcmp(file_path
, GIT_FILELOCK_EXTENSION
))
515 if (data
->callback(file_path
, data
->callback_payload
))
516 data
->callback_error
= GIT_EUSER
;
518 return data
->callback_error
;
521 static int _dirent_loose_load(void *data
, git_buf
*full_path
)
523 git_repository
*repository
= (git_repository
*)data
;
524 void *old_ref
= NULL
;
526 const char *file_path
;
529 if (git_path_isdir(full_path
->ptr
) == true)
530 return git_path_direach(full_path
, _dirent_loose_load
, repository
);
532 file_path
= full_path
->ptr
+ strlen(repository
->path_repository
);
534 if (loose_lookup_to_packfile(&ref
, repository
, file_path
) < 0)
538 repository
->references
.packfile
, ref
->name
, ref
, old_ref
, err
);
549 * Load all the loose references from the repository
550 * into the in-memory Packfile, and build a vector with
551 * all the references so it can be written back to
554 static int packed_loadloose(git_repository
*repository
)
556 git_buf refs_path
= GIT_BUF_INIT
;
559 /* the packfile must have been previously loaded! */
560 assert(repository
->references
.packfile
);
562 if (git_buf_joinpath(&refs_path
, repository
->path_repository
, GIT_REFS_DIR
) < 0)
566 * Load all the loose files from disk into the Packfile table.
567 * This will overwrite any old packed entries with their
568 * updated loose versions
570 result
= git_path_direach(&refs_path
, _dirent_loose_load
, repository
);
571 git_buf_free(&refs_path
);
577 * Write a single reference into a packfile
579 static int packed_write_ref(struct packref
*ref
, git_filebuf
*file
)
581 char oid
[GIT_OID_HEXSZ
+ 1];
583 git_oid_fmt(oid
, &ref
->oid
);
584 oid
[GIT_OID_HEXSZ
] = 0;
587 * For references that peel to an object in the repo, we must
588 * write the resulting peel on a separate line, e.g.
590 * 6fa8a902cc1d18527e1355773c86721945475d37 refs/tags/libgit2-0.4
591 * ^2ec0cb7959b0bf965d54f95453f5b4b34e8d3100
593 * This obviously only applies to tags.
594 * The required peels have already been loaded into `ref->peel_target`.
596 if (ref
->flags
& GIT_PACKREF_HAS_PEEL
) {
597 char peel
[GIT_OID_HEXSZ
+ 1];
598 git_oid_fmt(peel
, &ref
->peel
);
599 peel
[GIT_OID_HEXSZ
] = 0;
601 if (git_filebuf_printf(file
, "%s %s\n^%s\n", oid
, ref
->name
, peel
) < 0)
604 if (git_filebuf_printf(file
, "%s %s\n", oid
, ref
->name
) < 0)
612 * Find out what object this reference resolves to.
614 * For references that point to a 'big' tag (e.g. an
615 * actual tag object on the repository), we need to
616 * cache on the packfile the OID of the object to
617 * which that 'big tag' is pointing to.
619 static int packed_find_peel(git_repository
*repo
, struct packref
*ref
)
623 if (ref
->flags
& GIT_PACKREF_HAS_PEEL
)
627 * Only applies to tags, i.e. references
628 * in the /refs/tags folder
630 if (git__prefixcmp(ref
->name
, GIT_REFS_TAGS_DIR
) != 0)
634 * Find the tagged object in the repository
636 if (git_object_lookup(&object
, repo
, &ref
->oid
, GIT_OBJ_ANY
) < 0)
640 * If the tagged object is a Tag object, we need to resolve it;
641 * if the ref is actually a 'weak' ref, we don't need to resolve
644 if (git_object_type(object
) == GIT_OBJ_TAG
) {
645 git_tag
*tag
= (git_tag
*)object
;
648 * Find the object pointed at by this tag
650 git_oid_cpy(&ref
->peel
, git_tag_target_id(tag
));
651 ref
->flags
|= GIT_PACKREF_HAS_PEEL
;
654 * The reference has now cached the resolved OID, and is
655 * marked at such. When written to the packfile, it'll be
656 * accompanied by this resolved oid
660 git_object_free(object
);
665 * Remove all loose references
667 * Once we have successfully written a packfile,
668 * all the loose references that were packed must be
671 * This is a dangerous method; make sure the packfile
672 * is well-written, because we are destructing references
675 static int packed_remove_loose(git_repository
*repo
, git_vector
*packing_list
)
678 git_buf full_path
= GIT_BUF_INIT
;
681 for (i
= 0; i
< packing_list
->length
; ++i
) {
682 struct packref
*ref
= git_vector_get(packing_list
, i
);
684 if ((ref
->flags
& GIT_PACKREF_WAS_LOOSE
) == 0)
687 if (git_buf_joinpath(&full_path
, repo
->path_repository
, ref
->name
) < 0)
688 return -1; /* critical; do not try to recover on oom */
690 if (git_path_exists(full_path
.ptr
) == true && p_unlink(full_path
.ptr
) < 0) {
694 giterr_set(GITERR_REFERENCE
,
695 "Failed to remove loose reference '%s' after packing: %s",
696 full_path
.ptr
, strerror(errno
));
702 * if we fail to remove a single file, this is *not* good,
703 * but we should keep going and remove as many as possible.
704 * After we've removed as many files as possible, we return
705 * the error code anyway.
709 git_buf_free(&full_path
);
710 return failed
? -1 : 0;
713 static int packed_sort(const void *a
, const void *b
)
715 const struct packref
*ref_a
= (const struct packref
*)a
;
716 const struct packref
*ref_b
= (const struct packref
*)b
;
718 return strcmp(ref_a
->name
, ref_b
->name
);
722 * Write all the contents in the in-memory packfile to disk.
724 static int packed_write(git_repository
*repo
)
726 git_filebuf pack_file
= GIT_FILEBUF_INIT
;
728 git_buf pack_file_path
= GIT_BUF_INIT
;
729 git_vector packing_list
;
730 unsigned int total_refs
;
732 assert(repo
&& repo
->references
.packfile
);
735 (unsigned int)git_strmap_num_entries(repo
->references
.packfile
);
737 if (git_vector_init(&packing_list
, total_refs
, packed_sort
) < 0)
740 /* Load all the packfile into a vector */
742 struct packref
*reference
;
744 /* cannot fail: vector already has the right size */
745 git_strmap_foreach_value(repo
->references
.packfile
, reference
, {
746 git_vector_insert(&packing_list
, reference
);
750 /* sort the vector so the entries appear sorted on the packfile */
751 git_vector_sort(&packing_list
);
753 /* Now we can open the file! */
754 if (git_buf_joinpath(&pack_file_path
, repo
->path_repository
, GIT_PACKEDREFS_FILE
) < 0)
757 if (git_filebuf_open(&pack_file
, pack_file_path
.ptr
, 0) < 0)
758 goto cleanup_packfile
;
760 /* Packfiles have a header... apparently
761 * This is in fact not required, but we might as well print it
763 if (git_filebuf_printf(&pack_file
, "%s\n", GIT_PACKEDREFS_HEADER
) < 0)
764 goto cleanup_packfile
;
766 for (i
= 0; i
< packing_list
.length
; ++i
) {
767 struct packref
*ref
= (struct packref
*)git_vector_get(&packing_list
, i
);
769 if (packed_find_peel(repo
, ref
) < 0)
770 goto cleanup_packfile
;
772 if (packed_write_ref(ref
, &pack_file
) < 0)
773 goto cleanup_packfile
;
776 /* if we've written all the references properly, we can commit
777 * the packfile to make the changes effective */
778 if (git_filebuf_commit(&pack_file
, GIT_PACKEDREFS_FILE_MODE
) < 0)
781 /* when and only when the packfile has been properly written,
782 * we can go ahead and remove the loose refs */
783 if (packed_remove_loose(repo
, &packing_list
) < 0)
788 if (p_stat(pack_file_path
.ptr
, &st
) == 0)
789 repo
->references
.packfile_time
= st
.st_mtime
;
792 git_vector_free(&packing_list
);
793 git_buf_free(&pack_file_path
);
799 git_filebuf_cleanup(&pack_file
);
802 git_vector_free(&packing_list
);
803 git_buf_free(&pack_file_path
);
808 struct reference_available_t
{
814 static int _reference_available_cb(const char *ref
, void *data
)
816 struct reference_available_t
*d
;
819 d
= (struct reference_available_t
*)data
;
821 if (!d
->old_ref
|| strcmp(d
->old_ref
, ref
)) {
822 size_t reflen
= strlen(ref
);
823 size_t newlen
= strlen(d
->new_ref
);
824 size_t cmplen
= reflen
< newlen
? reflen
: newlen
;
825 const char *lead
= reflen
< newlen
? d
->new_ref
: ref
;
827 if (!strncmp(d
->new_ref
, ref
, cmplen
) && lead
[cmplen
] == '/') {
836 static int reference_path_available(
837 git_repository
*repo
,
842 struct reference_available_t data
;
845 data
.old_ref
= old_ref
;
848 error
= git_reference_foreach(
849 repo
, GIT_REF_LISTALL
, _reference_available_cb
, (void *)&data
);
853 if (!data
.available
) {
854 giterr_set(GITERR_REFERENCE
,
855 "The path to reference '%s' collides with an existing one", ref
);
862 static int reference_exists(int *exists
, git_repository
*repo
, const char *ref_name
)
864 git_buf ref_path
= GIT_BUF_INIT
;
866 if (packed_load(repo
) < 0)
869 if (git_buf_joinpath(&ref_path
, repo
->path_repository
, ref_name
) < 0)
872 if (git_path_isfile(ref_path
.ptr
) == true ||
873 git_strmap_exists(repo
->references
.packfile
, ref_path
.ptr
))
880 git_buf_free(&ref_path
);
885 * Check if a reference could be written to disk, based on:
887 * - Whether a reference with the same name already exists,
888 * and we are allowing or disallowing overwrites
890 * - Whether the name of the reference would collide with
893 static int reference_can_write(
894 git_repository
*repo
,
896 const char *previous_name
,
899 /* see if the reference shares a path with an existing reference;
900 * if a path is shared, we cannot create the reference, even when forcing */
901 if (reference_path_available(repo
, refname
, previous_name
) < 0)
904 /* check if the reference actually exists, but only if we are not forcing
905 * the rename. If we are forcing, it's OK to overwrite */
909 if (reference_exists(&exists
, repo
, refname
) < 0)
912 /* We cannot proceed if the reference already exists and we're not forcing
913 * the rename; the existing one would be overwritten */
915 giterr_set(GITERR_REFERENCE
,
916 "A reference with that name (%s) already exists", refname
);
921 /* FIXME: if the reference exists and we are forcing, do we really need to
922 * remove the reference first?
926 * - the reference already exists and is loose: not a problem, the file
927 * gets overwritten on disk
929 * - the reference already exists and is packed: we write a new one as
930 * loose, which by all means renders the packed one useless
937 static int packed_lookup(git_reference
*ref
)
939 struct packref
*pack_ref
= NULL
;
940 git_strmap
*packfile_refs
;
943 if (packed_load(ref
->owner
) < 0)
946 /* maybe the packfile hasn't changed at all, so we don't
947 * have to re-lookup the reference */
948 if ((ref
->flags
& GIT_REF_PACKED
) &&
949 ref
->mtime
== ref
->owner
->references
.packfile_time
)
952 if (ref
->flags
& GIT_REF_SYMBOLIC
) {
953 git__free(ref
->target
.symbolic
);
954 ref
->target
.symbolic
= NULL
;
957 /* Look up on the packfile */
958 packfile_refs
= ref
->owner
->references
.packfile
;
959 pos
= git_strmap_lookup_index(packfile_refs
, ref
->name
);
960 if (!git_strmap_valid_index(packfile_refs
, pos
)) {
961 giterr_set(GITERR_REFERENCE
, "Reference '%s' not found", ref
->name
);
962 return GIT_ENOTFOUND
;
965 pack_ref
= git_strmap_value_at(packfile_refs
, pos
);
967 ref
->flags
= GIT_REF_OID
| GIT_REF_PACKED
;
968 ref
->mtime
= ref
->owner
->references
.packfile_time
;
969 git_oid_cpy(&ref
->target
.oid
, &pack_ref
->oid
);
974 static int reference_lookup(git_reference
*ref
)
978 result
= loose_lookup(ref
);
982 /* only try to lookup this reference on the packfile if it
983 * wasn't found on the loose refs; not if there was a critical error */
984 if (result
== GIT_ENOTFOUND
) {
986 result
= packed_lookup(ref
);
991 /* unexpected error; free the reference */
992 git_reference_free(ref
);
997 * Delete a reference.
998 * This is an internal method; the reference is removed
999 * from disk or the packfile, but the pointer is not freed
1001 static int reference_delete(git_reference
*ref
)
1007 /* If the reference is packed, this is an expensive operation.
1008 * We need to reload the packfile, remove the reference from the
1009 * packing list, and repack */
1010 if (ref
->flags
& GIT_REF_PACKED
) {
1011 git_strmap
*packfile_refs
;
1012 struct packref
*packref
;
1015 /* load the existing packfile */
1016 if (packed_load(ref
->owner
) < 0)
1019 packfile_refs
= ref
->owner
->references
.packfile
;
1020 pos
= git_strmap_lookup_index(packfile_refs
, ref
->name
);
1021 if (!git_strmap_valid_index(packfile_refs
, pos
)) {
1022 giterr_set(GITERR_REFERENCE
,
1023 "Reference %s stopped existing in the packfile", ref
->name
);
1027 packref
= git_strmap_value_at(packfile_refs
, pos
);
1028 git_strmap_delete_at(packfile_refs
, pos
);
1031 if (packed_write(ref
->owner
) < 0)
1034 /* If the reference is loose, we can just remove the reference
1035 * from the filesystem */
1037 git_reference
*ref_in_pack
;
1038 git_buf full_path
= GIT_BUF_INIT
;
1040 if (git_buf_joinpath(&full_path
, ref
->owner
->path_repository
, ref
->name
) < 0)
1043 result
= p_unlink(full_path
.ptr
);
1044 git_buf_free(&full_path
); /* done with path at this point */
1047 giterr_set(GITERR_OS
, "Failed to unlink '%s'", full_path
.ptr
);
1051 /* When deleting a loose reference, we have to ensure that an older
1052 * packed version of it doesn't exist */
1053 if (git_reference_lookup(&ref_in_pack
, ref
->owner
, ref
->name
) == 0) {
1054 assert((ref_in_pack
->flags
& GIT_REF_PACKED
) != 0);
1055 return git_reference_delete(ref_in_pack
);
1064 int git_reference_delete(git_reference
*ref
)
1066 int result
= reference_delete(ref
);
1067 git_reference_free(ref
);
1071 int git_reference_lookup(git_reference
**ref_out
,
1072 git_repository
*repo
, const char *name
)
1074 return git_reference_lookup_resolved(ref_out
, repo
, name
, 0);
1077 int git_reference_name_to_id(
1078 git_oid
*out
, git_repository
*repo
, const char *name
)
1083 if ((error
= git_reference_lookup_resolved(&ref
, repo
, name
, -1)) < 0)
1086 git_oid_cpy(out
, git_reference_target(ref
));
1087 git_reference_free(ref
);
1091 int git_reference_lookup_resolved(
1092 git_reference
**ref_out
,
1093 git_repository
*repo
,
1097 git_reference
*scan
;
1098 int result
, nesting
;
1100 assert(ref_out
&& repo
&& name
);
1104 if (max_nesting
> MAX_NESTING_LEVEL
)
1105 max_nesting
= MAX_NESTING_LEVEL
;
1106 else if (max_nesting
< 0)
1107 max_nesting
= DEFAULT_NESTING_LEVEL
;
1109 scan
= git__calloc(1, sizeof(git_reference
));
1110 GITERR_CHECK_ALLOC(scan
);
1112 scan
->name
= git__calloc(GIT_REFNAME_MAX
+ 1, sizeof(char));
1113 GITERR_CHECK_ALLOC(scan
->name
);
1115 if ((result
= git_reference__normalize_name_lax(
1119 git_reference_free(scan
);
1123 scan
->target
.symbolic
= git__strdup(scan
->name
);
1124 GITERR_CHECK_ALLOC(scan
->target
.symbolic
);
1127 scan
->flags
= GIT_REF_SYMBOLIC
;
1129 for (nesting
= max_nesting
;
1130 nesting
>= 0 && (scan
->flags
& GIT_REF_SYMBOLIC
) != 0;
1133 if (nesting
!= max_nesting
)
1134 strncpy(scan
->name
, scan
->target
.symbolic
, GIT_REFNAME_MAX
);
1138 if ((result
= reference_lookup(scan
)) < 0)
1139 return result
; /* lookup git_reference_free on scan already */
1142 if ((scan
->flags
& GIT_REF_OID
) == 0 && max_nesting
!= 0) {
1143 giterr_set(GITERR_REFERENCE
,
1144 "Cannot resolve reference (>%u levels deep)", max_nesting
);
1145 git_reference_free(scan
);
1156 git_ref_t
git_reference_type(const git_reference
*ref
)
1160 if (ref
->flags
& GIT_REF_OID
)
1163 if (ref
->flags
& GIT_REF_SYMBOLIC
)
1164 return GIT_REF_SYMBOLIC
;
1166 return GIT_REF_INVALID
;
1169 int git_reference_is_packed(git_reference
*ref
)
1172 return !!(ref
->flags
& GIT_REF_PACKED
);
1175 const char *git_reference_name(const git_reference
*ref
)
1181 git_repository
*git_reference_owner(const git_reference
*ref
)
1187 const git_oid
*git_reference_target(const git_reference
*ref
)
1191 if ((ref
->flags
& GIT_REF_OID
) == 0)
1194 return &ref
->target
.oid
;
1197 const char *git_reference_symbolic_target(const git_reference
*ref
)
1201 if ((ref
->flags
& GIT_REF_SYMBOLIC
) == 0)
1204 return ref
->target
.symbolic
;
1207 int git_reference_symbolic_create(
1208 git_reference
**ref_out
,
1209 git_repository
*repo
,
1214 char normalized
[GIT_REFNAME_MAX
];
1215 git_reference
*ref
= NULL
;
1218 if ((error
= git_reference__normalize_name_lax(
1224 if ((error
= reference_can_write(repo
, normalized
, NULL
, force
)) < 0)
1227 if (reference_alloc(&ref
, repo
, normalized
) < 0)
1230 ref
->flags
|= GIT_REF_SYMBOLIC
;
1232 /* set the target; this will normalize the name automatically
1233 * and write the reference on disk */
1234 if (git_reference_symbolic_set_target(ref
, target
) < 0) {
1235 git_reference_free(ref
);
1238 if (ref_out
== NULL
) {
1239 git_reference_free(ref
);
1247 int git_reference_create(
1248 git_reference
**ref_out
,
1249 git_repository
*repo
,
1255 git_reference
*ref
= NULL
;
1256 char normalized
[GIT_REFNAME_MAX
];
1258 if ((error
= git_reference__normalize_name_lax(
1264 if ((error
= reference_can_write(repo
, normalized
, NULL
, force
)) < 0)
1267 if (reference_alloc(&ref
, repo
, name
) < 0)
1270 ref
->flags
|= GIT_REF_OID
;
1272 /* set the oid; this will write the reference on disk */
1273 if (git_reference_set_target(ref
, id
) < 0) {
1274 git_reference_free(ref
);
1278 if (ref_out
== NULL
) {
1279 git_reference_free(ref
);
1287 * Change the OID target of a reference.
1289 * For both loose and packed references, just change
1290 * the oid in memory and (over)write the file in disk.
1292 * We do not repack packed references because of performance
1295 int git_reference_set_target(git_reference
*ref
, const git_oid
*id
)
1297 git_odb
*odb
= NULL
;
1299 if ((ref
->flags
& GIT_REF_OID
) == 0) {
1300 giterr_set(GITERR_REFERENCE
, "Cannot set OID on symbolic reference");
1306 if (git_repository_odb__weakptr(&odb
, ref
->owner
) < 0)
1309 /* Don't let the user create references to OIDs that
1310 * don't exist in the ODB */
1311 if (!git_odb_exists(odb
, id
)) {
1312 giterr_set(GITERR_REFERENCE
,
1313 "Target OID for the reference doesn't exist on the repository");
1317 /* Update the OID value on `ref` */
1318 git_oid_cpy(&ref
->target
.oid
, id
);
1320 /* Write back to disk */
1321 return loose_write(ref
);
1325 * Change the target of a symbolic reference.
1327 * This is easy because symrefs cannot be inside
1328 * a pack. We just change the target in memory
1329 * and overwrite the file on disk.
1331 int git_reference_symbolic_set_target(git_reference
*ref
, const char *target
)
1334 char normalized
[GIT_REFNAME_MAX
];
1336 if ((ref
->flags
& GIT_REF_SYMBOLIC
) == 0) {
1337 giterr_set(GITERR_REFERENCE
,
1338 "Cannot set symbolic target on a direct reference");
1342 if ((error
= git_reference__normalize_name_lax(
1348 git__free(ref
->target
.symbolic
);
1349 ref
->target
.symbolic
= git__strdup(normalized
);
1350 GITERR_CHECK_ALLOC(ref
->target
.symbolic
);
1352 return loose_write(ref
);
1355 int git_reference_rename(git_reference
*ref
, const char *new_name
, int force
)
1358 unsigned int normalization_flags
;
1359 git_buf aux_path
= GIT_BUF_INIT
;
1360 char normalized
[GIT_REFNAME_MAX
];
1361 bool should_head_be_updated
= false;
1363 normalization_flags
= ref
->flags
& GIT_REF_SYMBOLIC
?
1364 GIT_REF_FORMAT_ALLOW_ONELEVEL
1365 : GIT_REF_FORMAT_NORMAL
;
1367 if ((result
= git_reference_normalize_name(
1371 normalization_flags
)) < 0)
1374 if ((result
= reference_can_write(ref
->owner
, normalized
, ref
->name
, force
)) < 0)
1377 /* Initialize path now so we won't get an allocation failure once
1378 * we actually start removing things. */
1379 if (git_buf_joinpath(&aux_path
, ref
->owner
->path_repository
, new_name
) < 0)
1383 * Check if we have to update HEAD.
1385 if ((should_head_be_updated
= git_branch_is_head(ref
)) < 0)
1389 * Now delete the old ref and remove an possibly existing directory
1390 * named `new_name`. Note that using the internal `reference_delete`
1391 * method deletes the ref from disk but doesn't free the pointer, so
1392 * we can still access the ref's attributes for creating the new one
1394 if (reference_delete(ref
) < 0)
1398 * Finally we can create the new reference.
1400 if (ref
->flags
& GIT_REF_SYMBOLIC
) {
1401 result
= git_reference_symbolic_create(
1402 NULL
, ref
->owner
, new_name
, ref
->target
.symbolic
, force
);
1404 result
= git_reference_create(
1405 NULL
, ref
->owner
, new_name
, &ref
->target
.oid
, force
);
1412 * Update HEAD it was poiting to the reference being renamed.
1414 if (should_head_be_updated
&&
1415 git_repository_set_head(ref
->owner
, new_name
) < 0) {
1416 giterr_set(GITERR_REFERENCE
,
1417 "Failed to update HEAD after renaming reference");
1422 * Rename the reflog file, if it exists.
1424 if ((git_reference_has_log(ref
)) && (git_reflog_rename(ref
, new_name
) < 0))
1428 * Change the name of the reference given by the user.
1430 git__free(ref
->name
);
1431 ref
->name
= git__strdup(new_name
);
1433 /* The reference is no longer packed */
1434 ref
->flags
&= ~GIT_REF_PACKED
;
1436 git_buf_free(&aux_path
);
1440 git_buf_free(&aux_path
);
1445 * Try to create the old reference again, ignore failures
1447 if (ref
->flags
& GIT_REF_SYMBOLIC
)
1448 git_reference_symbolic_create(
1449 NULL
, ref
->owner
, ref
->name
, ref
->target
.symbolic
, 0);
1451 git_reference_create(
1452 NULL
, ref
->owner
, ref
->name
, &ref
->target
.oid
, 0);
1454 /* The reference is no longer packed */
1455 ref
->flags
&= ~GIT_REF_PACKED
;
1457 git_buf_free(&aux_path
);
1461 int git_reference_resolve(git_reference
**ref_out
, const git_reference
*ref
)
1463 if (ref
->flags
& GIT_REF_OID
)
1464 return git_reference_lookup(ref_out
, ref
->owner
, ref
->name
);
1466 return git_reference_lookup_resolved(ref_out
, ref
->owner
, ref
->target
.symbolic
, -1);
1469 int git_reference_packall(git_repository
*repo
)
1471 if (packed_load(repo
) < 0 || /* load the existing packfile */
1472 packed_loadloose(repo
) < 0 || /* add all the loose refs */
1473 packed_write(repo
) < 0) /* write back to disk */
1479 int git_reference_foreach(
1480 git_repository
*repo
,
1481 unsigned int list_flags
,
1482 git_reference_foreach_cb callback
,
1486 struct dirent_list_data data
;
1487 git_buf refs_path
= GIT_BUF_INIT
;
1489 /* list all the packed references first */
1490 if (list_flags
& GIT_REF_PACKED
) {
1491 const char *ref_name
;
1495 if (packed_load(repo
) < 0)
1498 git_strmap_foreach(repo
->references
.packfile
, ref_name
, ref
, {
1499 if (callback(ref_name
, payload
))
1504 /* now list the loose references, trying not to
1505 * duplicate the ref names already in the packed-refs file */
1507 data
.repo_path_len
= strlen(repo
->path_repository
);
1508 data
.list_flags
= list_flags
;
1510 data
.callback
= callback
;
1511 data
.callback_payload
= payload
;
1512 data
.callback_error
= 0;
1514 if (git_buf_joinpath(&refs_path
, repo
->path_repository
, GIT_REFS_DIR
) < 0)
1517 result
= git_path_direach(&refs_path
, _dirent_loose_listall
, &data
);
1519 git_buf_free(&refs_path
);
1521 return data
.callback_error
? GIT_EUSER
: result
;
1524 static int cb__reflist_add(const char *ref
, void *data
)
1526 return git_vector_insert((git_vector
*)data
, git__strdup(ref
));
1529 int git_reference_list(
1530 git_strarray
*array
,
1531 git_repository
*repo
,
1532 unsigned int list_flags
)
1534 git_vector ref_list
;
1536 assert(array
&& repo
);
1538 array
->strings
= NULL
;
1541 if (git_vector_init(&ref_list
, 8, NULL
) < 0)
1544 if (git_reference_foreach(
1545 repo
, list_flags
, &cb__reflist_add
, (void *)&ref_list
) < 0) {
1546 git_vector_free(&ref_list
);
1550 array
->strings
= (char **)ref_list
.contents
;
1551 array
->count
= ref_list
.length
;
1555 int git_reference_reload(git_reference
*ref
)
1557 return reference_lookup(ref
);
1560 void git_repository__refcache_free(git_refcache
*refs
)
1564 if (refs
->packfile
) {
1565 struct packref
*reference
;
1567 git_strmap_foreach_value(refs
->packfile
, reference
, {
1568 git__free(reference
);
1571 git_strmap_free(refs
->packfile
);
1575 static int is_valid_ref_char(char ch
)
1577 if ((unsigned) ch
<= ' ')
1594 static int ensure_segment_validity(const char *name
)
1596 const char *current
= name
;
1599 if (*current
== '.')
1600 return -1; /* Refname starts with "." */
1602 for (current
= name
; ; current
++) {
1603 if (*current
== '\0' || *current
== '/')
1606 if (!is_valid_ref_char(*current
))
1607 return -1; /* Illegal character in refname */
1609 if (prev
== '.' && *current
== '.')
1610 return -1; /* Refname contains ".." */
1612 if (prev
== '@' && *current
== '{')
1613 return -1; /* Refname contains "@{" */
1618 return (int)(current
- name
);
1621 static bool is_all_caps_and_underscore(const char *name
, size_t len
)
1626 assert(name
&& len
> 0);
1628 for (i
= 0; i
< len
; i
++)
1631 if ((c
< 'A' || c
> 'Z') && c
!= '_')
1635 if (*name
== '_' || name
[len
- 1] == '_')
1641 int git_reference__normalize_name(
1646 // Inspired from https://github.com/git/git/blob/f06d47e7e0d9db709ee204ed13a8a7486149f494/refs.c#L36-100
1649 int segment_len
, segments_count
= 0, error
= GIT_EINVALIDSPEC
;
1650 unsigned int process_flags
;
1651 bool normalize
= (buf
!= NULL
);
1654 process_flags
= flags
;
1655 current
= (char *)name
;
1661 segment_len
= ensure_segment_validity(current
);
1662 if (segment_len
< 0) {
1663 if ((process_flags
& GIT_REF_FORMAT_REFSPEC_PATTERN
) &&
1664 current
[0] == '*' &&
1665 (current
[1] == '\0' || current
[1] == '/')) {
1666 /* Accept one wildcard as a full refname component. */
1667 process_flags
&= ~GIT_REF_FORMAT_REFSPEC_PATTERN
;
1673 if (segment_len
> 0) {
1675 size_t cur_len
= git_buf_len(buf
);
1677 git_buf_joinpath(buf
, git_buf_cstr(buf
), current
);
1678 git_buf_truncate(buf
,
1679 cur_len
+ segment_len
+ (segments_count
? 1 : 0));
1681 if (git_buf_oom(buf
)) {
1690 if (current
[segment_len
] == '\0')
1693 current
+= segment_len
+ 1;
1696 /* A refname can not be empty */
1697 if (segment_len
== 0 && segments_count
== 0)
1700 /* A refname can not end with "." */
1701 if (current
[segment_len
- 1] == '.')
1704 /* A refname can not end with "/" */
1705 if (current
[segment_len
- 1] == '/')
1708 /* A refname can not end with ".lock" */
1709 if (!git__suffixcmp(name
, GIT_FILELOCK_EXTENSION
))
1712 if ((segments_count
== 1 ) && !(flags
& GIT_REF_FORMAT_ALLOW_ONELEVEL
))
1715 if ((segments_count
== 1 ) &&
1716 !(is_all_caps_and_underscore(name
, (size_t)segment_len
) ||
1717 ((flags
& GIT_REF_FORMAT_REFSPEC_PATTERN
) && !strcmp("*", name
))))
1720 if ((segments_count
> 1)
1721 && (is_all_caps_and_underscore(name
, strchr(name
, '/') - name
)))
1727 if (error
== GIT_EINVALIDSPEC
)
1730 "The given reference name '%s' is not valid", name
);
1735 int git_reference_normalize_name(
1741 git_buf buf
= GIT_BUF_INIT
;
1744 if ((error
= git_reference__normalize_name(&buf
, name
, flags
)) < 0)
1747 if (git_buf_len(&buf
) > buffer_size
- 1) {
1750 "The provided buffer is too short to hold the normalization of '%s'", name
);
1755 git_buf_copy_cstr(buffer_out
, buffer_size
, &buf
);
1764 int git_reference__normalize_name_lax(
1769 return git_reference_normalize_name(
1773 GIT_REF_FORMAT_ALLOW_ONELEVEL
);
1775 #define GIT_REF_TYPEMASK (GIT_REF_OID | GIT_REF_SYMBOLIC)
1777 int git_reference_cmp(git_reference
*ref1
, git_reference
*ref2
)
1779 assert(ref1
&& ref2
);
1781 /* let's put symbolic refs before OIDs */
1782 if ((ref1
->flags
& GIT_REF_TYPEMASK
) != (ref2
->flags
& GIT_REF_TYPEMASK
))
1783 return (ref1
->flags
& GIT_REF_SYMBOLIC
) ? -1 : 1;
1785 if (ref1
->flags
& GIT_REF_SYMBOLIC
)
1786 return strcmp(ref1
->target
.symbolic
, ref2
->target
.symbolic
);
1788 return git_oid_cmp(&ref1
->target
.oid
, &ref2
->target
.oid
);
1791 /* Update the reference named `ref_name` so it points to `oid` */
1792 int git_reference__update(git_repository
*repo
, const git_oid
*oid
, const char *ref_name
)
1797 res
= git_reference_lookup(&ref
, repo
, ref_name
);
1799 /* If we haven't found the reference at all, we assume we need to create
1800 * a new reference and that's it */
1801 if (res
== GIT_ENOTFOUND
) {
1803 return git_reference_create(NULL
, repo
, ref_name
, oid
, 1);
1809 /* If we have found a reference, but it's symbolic, we need to update
1810 * the direct reference it points to */
1811 if (git_reference_type(ref
) == GIT_REF_SYMBOLIC
) {
1813 const char *sym_target
;
1815 /* The target pointed at by this reference */
1816 sym_target
= git_reference_symbolic_target(ref
);
1818 /* resolve the reference to the target it points to */
1819 res
= git_reference_resolve(&aux
, ref
);
1822 * if the symbolic reference pointed to an inexisting ref,
1823 * this is means we're creating a new branch, for example.
1824 * We need to create a new direct reference with that name
1826 if (res
== GIT_ENOTFOUND
) {
1828 res
= git_reference_create(NULL
, repo
, sym_target
, oid
, 1);
1829 git_reference_free(ref
);
1833 /* free the original symbolic reference now; not before because
1834 * we're using the `sym_target` pointer */
1835 git_reference_free(ref
);
1840 /* store the newly found direct reference in its place */
1844 /* ref is made to point to `oid`: ref is either the original reference,
1845 * or the target of the symbolic reference we've looked up */
1846 res
= git_reference_set_target(ref
, oid
);
1847 git_reference_free(ref
);
1851 struct glob_cb_data
{
1853 int (*callback
)(const char *, void *);
1857 static int fromglob_cb(const char *reference_name
, void *payload
)
1859 struct glob_cb_data
*data
= (struct glob_cb_data
*)payload
;
1861 if (!p_fnmatch(data
->glob
, reference_name
, 0))
1862 return data
->callback(reference_name
, data
->payload
);
1867 int git_reference_foreach_glob(
1868 git_repository
*repo
,
1870 unsigned int list_flags
,
1872 const char *reference_name
,
1876 struct glob_cb_data data
;
1878 assert(repo
&& glob
&& callback
);
1881 data
.callback
= callback
;
1882 data
.payload
= payload
;
1884 return git_reference_foreach(
1885 repo
, list_flags
, fromglob_cb
, &data
);
1888 int git_reference_has_log(
1891 git_buf path
= GIT_BUF_INIT
;
1896 if (git_buf_join_n(&path
, '/', 3, ref
->owner
->path_repository
, GIT_REFLOG_DIR
, ref
->name
) < 0)
1899 result
= git_path_isfile(git_buf_cstr(&path
));
1900 git_buf_free(&path
);
1905 int git_reference_is_branch(git_reference
*ref
)
1908 return git__prefixcmp(ref
->name
, GIT_REFS_HEADS_DIR
) == 0;
1911 int git_reference_is_remote(git_reference
*ref
)
1914 return git__prefixcmp(ref
->name
, GIT_REFS_REMOTES_DIR
) == 0;
1917 static int peel_error(int error
, git_reference
*ref
, const char* msg
)
1921 "The reference '%s' cannot be peeled - %s", git_reference_name(ref
), msg
);
1925 static int reference_target(git_object
**object
, git_reference
*ref
)
1929 oid
= git_reference_target(ref
);
1931 return git_object_lookup(object
, git_reference_owner(ref
), oid
, GIT_OBJ_ANY
);
1934 int git_reference_peel(
1935 git_object
**peeled
,
1937 git_otype target_type
)
1939 git_reference
*resolved
= NULL
;
1940 git_object
*target
= NULL
;
1945 if ((error
= git_reference_resolve(&resolved
, ref
)) < 0)
1946 return peel_error(error
, ref
, "Cannot resolve reference");
1948 if ((error
= reference_target(&target
, resolved
)) < 0) {
1949 peel_error(error
, ref
, "Cannot retrieve reference target");
1953 if (target_type
== GIT_OBJ_ANY
&& git_object_type(target
) != GIT_OBJ_TAG
)
1954 error
= git_object__dup(peeled
, target
);
1956 error
= git_object_peel(peeled
, target
, target_type
);
1959 git_object_free(target
);
1960 git_reference_free(resolved
);
1964 int git_reference__is_valid_name(
1965 const char *refname
,
1970 error
= git_reference__normalize_name(NULL
, refname
, flags
) == 0;
1976 int git_reference_is_valid_name(
1977 const char *refname
)
1979 return git_reference__is_valid_name(
1981 GIT_REF_FORMAT_ALLOW_ONELEVEL
);