1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
|
/*
* Copyright (C) 2009-2011 the libgit2 contributors
*
* This file is part of libgit2, distributed under the GNU GPL v2 with
* a Linking Exception. For full terms see the included COPYING file.
*/
#ifndef INCLUDE_git_refs_h__
#define INCLUDE_git_refs_h__
#include "common.h"
#include "types.h"
#include "oid.h"
/**
* @file git2/refs.h
* @brief Git reference management routines
* @defgroup git_reference Git reference management routines
* @ingroup Git
* @{
*/
GIT_BEGIN_DECL
/**
* Lookup a reference by its name in a repository.
*
* The generated reference must be freed by the user.
*
* @param reference_out pointer to the looked-up reference
* @param repo the repository to look up the reference
* @param name the long name for the reference (e.g. HEAD, ref/heads/master, refs/tags/v0.1.0, ...)
* @return GIT_SUCCESS or an error code
*/
GIT_EXTERN(int) git_reference_lookup(git_reference **reference_out, git_repository *repo, const char *name);
/**
* Create a new symbolic reference.
*
* The reference will be created in the repository and written
* to the disk.
*
* The generated reference must be freed by the user.
*
* If `force` is true and there already exists a reference
* with the same name, it will be overwritten.
*
* @param ref_out Pointer to the newly created reference
* @param repo Repository where that reference will live
* @param name The name of the reference
* @param target The target of the reference
* @param force Overwrite existing references
* @return GIT_SUCCESS or an error code
*/
GIT_EXTERN(int) git_reference_create_symbolic(git_reference **ref_out, git_repository *repo, const char *name, const char *target, int force);
/**
* Create a new object id reference.
*
* The reference will be created in the repository and written
* to the disk.
*
* The generated reference must be freed by the user.
*
* If `force` is true and there already exists a reference
* with the same name, it will be overwritten.
*
* @param ref_out Pointer to the newly created reference
* @param repo Repository where that reference will live
* @param name The name of the reference
* @param id The object id pointed to by the reference.
* @param force Overwrite existing references
* @return GIT_SUCCESS or an error code
*/
GIT_EXTERN(int) git_reference_create_oid(git_reference **ref_out, git_repository *repo, const char *name, const git_oid *id, int force);
/**
* Get the OID pointed to by a reference.
*
* Only available if the reference is direct (i.e. not symbolic)
*
* @param ref The reference
* @return a pointer to the oid if available, NULL otherwise
*/
GIT_EXTERN(const git_oid *) git_reference_oid(git_reference *ref);
/**
* Get full name to the reference pointed by this reference
*
* Only available if the reference is symbolic
*
* @param ref The reference
* @return a pointer to the name if available, NULL otherwise
*/
GIT_EXTERN(const char *) git_reference_target(git_reference *ref);
/**
* Get the type of a reference
*
* Either direct (GIT_REF_OID) or symbolic (GIT_REF_SYMBOLIC)
*
* @param ref The reference
* @return the type
*/
GIT_EXTERN(git_rtype) git_reference_type(git_reference *ref);
/**
* Get the full name of a reference
*
* @param ref The reference
* @return the full name for the ref
*/
GIT_EXTERN(const char *) git_reference_name(git_reference *ref);
/**
* Resolve a symbolic reference
*
* Thie method iteratively peels a symbolic reference
* until it resolves to a direct reference to an OID.
*
* The peeled reference is returned in the `resolved_ref`
* argument, and must be freed manually once it's no longer
* needed.
*
* If a direct reference is passed as an argument,
* a copy of that reference is returned. This copy must
* be manually freed too.
*
* @param resolved_ref Pointer to the peeled reference
* @param ref The reference
* @return GIT_SUCCESS or an error code
*/
GIT_EXTERN(int) git_reference_resolve(git_reference **resolved_ref, git_reference *ref);
/**
* Get the repository where a reference resides
*
* @param ref The reference
* @return a pointer to the repo
*/
GIT_EXTERN(git_repository *) git_reference_owner(git_reference *ref);
/**
* Set the symbolic target of a reference.
*
* The reference must be a symbolic reference, otherwise
* this method will fail.
*
* The reference will be automatically updated in
* memory and on disk.
*
* @param ref The reference
* @param target The new target for the reference
* @return GIT_SUCCESS or an error code
*/
GIT_EXTERN(int) git_reference_set_target(git_reference *ref, const char *target);
/**
* Set the OID target of a reference.
*
* The reference must be a direct reference, otherwise
* this method will fail.
*
* The reference will be automatically updated in
* memory and on disk.
*
* @param ref The reference
* @param id The new target OID for the reference
* @return GIT_SUCCESS or an error code
*/
GIT_EXTERN(int) git_reference_set_oid(git_reference *ref, const git_oid *id);
/**
* Rename an existing reference
*
* This method works for both direct and symbolic references.
* The new name will be checked for validity and may be
* modified into a normalized form.
*
* The given git_reference will be updated in place.
*
* The reference will be immediately renamed in-memory
* and on disk.
*
* If the `force` flag is not enabled, and there's already
* a reference with the given name, the renaming will fail.
*
* IMPORTANT:
* The user needs to write a proper reflog entry if the
* reflog is enabled for the repository. We only rename
* the reflog if it exists.
*
* @param ref The reference to rename
* @param new_name The new name for the reference
* @param force Overwrite an existing reference
* @return GIT_SUCCESS or an error code
*
*/
GIT_EXTERN(int) git_reference_rename(git_reference *ref, const char *new_name, int force);
/**
* Delete an existing reference
*
* This method works for both direct and symbolic references.
*
* The reference will be immediately removed on disk and from
* memory. The given reference pointer will no longer be valid.
*
* @param ref The reference to remove
* @return GIT_SUCCESS or an error code
*/
GIT_EXTERN(int) git_reference_delete(git_reference *ref);
/**
* Pack all the loose references in the repository
*
* This method will load into the cache all the loose
* references on the repository and update the
* `packed-refs` file with them.
*
* Once the `packed-refs` file has been written properly,
* the loose references will be removed from disk.
*
* @param repo Repository where the loose refs will be packed
* @return GIT_SUCCESS or an error code
*/
GIT_EXTERN(int) git_reference_packall(git_repository *repo);
/**
* Fill a list with all the references that can be found
* in a repository.
*
* The listed references may be filtered by type, or using
* a bitwise OR of several types. Use the magic value
* `GIT_REF_LISTALL` to obtain all references, including
* packed ones.
*
* The string array will be filled with the names of all
* references; these values are owned by the user and
* should be free'd manually when no longer needed, using
* `git_strarray_free`.
*
* @param array Pointer to a git_strarray structure where
* the reference names will be stored
* @param repo Repository where to find the refs
* @param list_flags Filtering flags for the reference
* listing.
* @return GIT_SUCCESS or an error code
*/
GIT_EXTERN(int) git_reference_listall(git_strarray *array, git_repository *repo, unsigned int list_flags);
/**
* Perform an operation on each reference in the repository
*
* The processed references may be filtered by type, or using
* a bitwise OR of several types. Use the magic value
* `GIT_REF_LISTALL` to obtain all references, including
* packed ones.
*
* The `callback` function will be called for each of the references
* in the repository, and will receive the name of the reference and
* the `payload` value passed to this method.
*
* @param repo Repository where to find the refs
* @param list_flags Filtering flags for the reference
* listing.
* @param callback Function which will be called for every listed ref
* @param payload Additional data to pass to the callback
* @return GIT_SUCCESS or an error code
*/
GIT_EXTERN(int) git_reference_foreach(git_repository *repo, unsigned int list_flags, int (*callback)(const char *, void *), void *payload);
/**
* Check if a reference has been loaded from a packfile
*
* @param ref A git reference
* @return 0 in case it's not packed; 1 otherwise
*/
GIT_EXTERN(int) git_reference_is_packed(git_reference *ref);
/**
* Reload a reference from disk
*
* Reference pointers may become outdated if the Git
* repository is accessed simultaneously by other clients
* whilt the library is open.
*
* This method forces a reload of the reference from disk,
* to ensure that the provided information is still
* reliable.
*
* If the reload fails (e.g. the reference no longer exists
* on disk, or has become corrupted), an error code will be
* returned and the reference pointer will be invalidated.
*
* @param ref The reference to reload
* @return GIT_SUCCESS on success, or an error code
*/
GIT_EXTERN(int) git_reference_reload(git_reference *ref);
/**
* Free the given reference
*
* @param ref git_reference
*/
GIT_EXTERN(void) git_reference_free(git_reference *ref);
/** @} */
GIT_END_DECL
#endif
|