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
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
|
package git
/*
#include <git2.h>
*/
import "C"
import (
"runtime"
"unsafe"
)
type ReferenceType int
const (
ReferenceSymbolic ReferenceType = C.GIT_REF_SYMBOLIC
ReferenceOid ReferenceType = C.GIT_REF_OID
)
type Reference struct {
ptr *C.git_reference
repo *Repository
}
type ReferenceCollection struct {
repo *Repository
}
func (c *ReferenceCollection) Lookup(name string) (*Reference, error) {
cname := C.CString(name)
defer C.free(unsafe.Pointer(cname))
var ptr *C.git_reference
runtime.LockOSThread()
defer runtime.UnlockOSThread()
ecode := C.git_reference_lookup(&ptr, c.repo.ptr, cname)
runtime.KeepAlive(c)
if ecode < 0 {
return nil, MakeGitError(ecode)
}
return newReferenceFromC(ptr, c.repo), nil
}
func (c *ReferenceCollection) Create(name string, id *Oid, force bool, msg string) (*Reference, error) {
cname := C.CString(name)
defer C.free(unsafe.Pointer(cname))
var cmsg *C.char
if msg == "" {
cmsg = nil
} else {
cmsg = C.CString(msg)
defer C.free(unsafe.Pointer(cmsg))
}
var ptr *C.git_reference
runtime.LockOSThread()
defer runtime.UnlockOSThread()
ecode := C.git_reference_create(&ptr, c.repo.ptr, cname, id.toC(), cbool(force), cmsg)
runtime.KeepAlive(c)
runtime.KeepAlive(id)
if ecode < 0 {
return nil, MakeGitError(ecode)
}
return newReferenceFromC(ptr, c.repo), nil
}
func (c *ReferenceCollection) CreateSymbolic(name, target string, force bool, msg string) (*Reference, error) {
cname := C.CString(name)
defer C.free(unsafe.Pointer(cname))
ctarget := C.CString(target)
defer C.free(unsafe.Pointer(ctarget))
var cmsg *C.char
if msg == "" {
cmsg = nil
} else {
cmsg = C.CString(msg)
defer C.free(unsafe.Pointer(cmsg))
}
var ptr *C.git_reference
runtime.LockOSThread()
defer runtime.UnlockOSThread()
ecode := C.git_reference_symbolic_create(&ptr, c.repo.ptr, cname, ctarget, cbool(force), cmsg)
runtime.KeepAlive(c)
if ecode < 0 {
return nil, MakeGitError(ecode)
}
return newReferenceFromC(ptr, c.repo), nil
}
// EnsureLog ensures that there is a reflog for the given reference
// name and creates an empty one if necessary.
func (c *ReferenceCollection) EnsureLog(name string) error {
cname := C.CString(name)
defer C.free(unsafe.Pointer(cname))
runtime.LockOSThread()
defer runtime.UnlockOSThread()
ret := C.git_reference_ensure_log(c.repo.ptr, cname)
runtime.KeepAlive(c)
if ret < 0 {
return MakeGitError(ret)
}
return nil
}
// HasLog returns whether there is a reflog for the given reference
// name
func (c *ReferenceCollection) HasLog(name string) (bool, error) {
cname := C.CString(name)
defer C.free(unsafe.Pointer(cname))
runtime.LockOSThread()
defer runtime.UnlockOSThread()
ret := C.git_reference_has_log(c.repo.ptr, cname)
runtime.KeepAlive(c)
if ret < 0 {
return false, MakeGitError(ret)
}
return ret == 1, nil
}
// Dwim looks up a reference by DWIMing its short name
func (c *ReferenceCollection) Dwim(name string) (*Reference, error) {
cname := C.CString(name)
defer C.free(unsafe.Pointer(cname))
runtime.LockOSThread()
defer runtime.UnlockOSThread()
var ptr *C.git_reference
ret := C.git_reference_dwim(&ptr, c.repo.ptr, cname)
runtime.KeepAlive(c)
if ret < 0 {
return nil, MakeGitError(ret)
}
return newReferenceFromC(ptr, c.repo), nil
}
func newReferenceFromC(ptr *C.git_reference, repo *Repository) *Reference {
ref := &Reference{ptr: ptr, repo: repo}
runtime.SetFinalizer(ref, (*Reference).Free)
return ref
}
func (v *Reference) SetSymbolicTarget(target string, msg string) (*Reference, error) {
var ptr *C.git_reference
ctarget := C.CString(target)
defer C.free(unsafe.Pointer(ctarget))
runtime.LockOSThread()
defer runtime.UnlockOSThread()
var cmsg *C.char
if msg == "" {
cmsg = nil
} else {
cmsg = C.CString(msg)
defer C.free(unsafe.Pointer(cmsg))
}
ret := C.git_reference_symbolic_set_target(&ptr, v.ptr, ctarget, cmsg)
runtime.KeepAlive(v)
if ret < 0 {
return nil, MakeGitError(ret)
}
return newReferenceFromC(ptr, v.repo), nil
}
func (v *Reference) SetTarget(target *Oid, msg string) (*Reference, error) {
var ptr *C.git_reference
runtime.LockOSThread()
defer runtime.UnlockOSThread()
var cmsg *C.char
if msg == "" {
cmsg = nil
} else {
cmsg = C.CString(msg)
defer C.free(unsafe.Pointer(cmsg))
}
ret := C.git_reference_set_target(&ptr, v.ptr, target.toC(), cmsg)
runtime.KeepAlive(v)
if ret < 0 {
return nil, MakeGitError(ret)
}
return newReferenceFromC(ptr, v.repo), nil
}
func (v *Reference) Resolve() (*Reference, error) {
var ptr *C.git_reference
runtime.LockOSThread()
defer runtime.UnlockOSThread()
ret := C.git_reference_resolve(&ptr, v.ptr)
runtime.KeepAlive(v)
if ret < 0 {
return nil, MakeGitError(ret)
}
return newReferenceFromC(ptr, v.repo), nil
}
func (v *Reference) Rename(name string, force bool, msg string) (*Reference, error) {
var ptr *C.git_reference
cname := C.CString(name)
defer C.free(unsafe.Pointer(cname))
var cmsg *C.char
if msg == "" {
cmsg = nil
} else {
cmsg = C.CString(msg)
defer C.free(unsafe.Pointer(cmsg))
}
runtime.LockOSThread()
defer runtime.UnlockOSThread()
ret := C.git_reference_rename(&ptr, v.ptr, cname, cbool(force), cmsg)
runtime.KeepAlive(v)
if ret < 0 {
return nil, MakeGitError(ret)
}
return newReferenceFromC(ptr, v.repo), nil
}
func (v *Reference) Target() *Oid {
ret := newOidFromC(C.git_reference_target(v.ptr))
runtime.KeepAlive(v)
return ret
}
func (v *Reference) SymbolicTarget() string {
var ret string
cstr := C.git_reference_symbolic_target(v.ptr)
if cstr != nil {
return C.GoString(cstr)
}
runtime.KeepAlive(v)
return ret
}
func (v *Reference) Delete() error {
runtime.LockOSThread()
defer runtime.UnlockOSThread()
ret := C.git_reference_delete(v.ptr)
runtime.KeepAlive(v)
if ret < 0 {
return MakeGitError(ret)
}
return nil
}
func (v *Reference) Peel(t ObjectType) (*Object, error) {
var cobj *C.git_object
runtime.LockOSThread()
defer runtime.UnlockOSThread()
err := C.git_reference_peel(&cobj, v.ptr, C.git_otype(t))
runtime.KeepAlive(v)
if err < 0 {
return nil, MakeGitError(err)
}
return allocObject(cobj, v.repo), nil
}
// Owner returns a weak reference to the repository which owns this
// reference.
func (v *Reference) Owner() *Repository {
return &Repository{
ptr: C.git_reference_owner(v.ptr),
}
}
// Cmp compares v to ref2. It returns 0 on equality, otherwise a
// stable sorting.
func (v *Reference) Cmp(ref2 *Reference) int {
ret := int(C.git_reference_cmp(v.ptr, ref2.ptr))
runtime.KeepAlive(v)
runtime.KeepAlive(ref2)
return ret
}
// Shorthand returns a "human-readable" short reference name.
func (v *Reference) Shorthand() string {
ret := C.GoString(C.git_reference_shorthand(v.ptr))
runtime.KeepAlive(v)
return ret
}
// Name returns the full name of v.
func (v *Reference) Name() string {
ret := C.GoString(C.git_reference_name(v.ptr))
runtime.KeepAlive(v)
return ret
}
func (v *Reference) Type() ReferenceType {
ret := ReferenceType(C.git_reference_type(v.ptr))
runtime.KeepAlive(v)
return ret
}
func (v *Reference) IsBranch() bool {
ret := C.git_reference_is_branch(v.ptr) == 1
runtime.KeepAlive(v)
return ret
}
func (v *Reference) IsRemote() bool {
ret := C.git_reference_is_remote(v.ptr) == 1
runtime.KeepAlive(v)
return ret
}
func (v *Reference) IsTag() bool {
ret := C.git_reference_is_tag(v.ptr) == 1
runtime.KeepAlive(v)
return ret
}
// IsNote checks if the reference is a note.
func (v *Reference) IsNote() bool {
ret := C.git_reference_is_note(v.ptr) == 1
runtime.KeepAlive(v)
return ret
}
func (v *Reference) Free() {
runtime.SetFinalizer(v, nil)
C.git_reference_free(v.ptr)
}
type ReferenceIterator struct {
ptr *C.git_reference_iterator
repo *Repository
}
type ReferenceNameIterator struct {
*ReferenceIterator
}
// NewReferenceIterator creates a new iterator over reference names
func (repo *Repository) NewReferenceIterator() (*ReferenceIterator, error) {
var ptr *C.git_reference_iterator
runtime.LockOSThread()
defer runtime.UnlockOSThread()
ret := C.git_reference_iterator_new(&ptr, repo.ptr)
if ret < 0 {
return nil, MakeGitError(ret)
}
return newReferenceIteratorFromC(ptr, repo), nil
}
// NewReferenceIterator creates a new branch iterator over reference names
func (repo *Repository) NewReferenceNameIterator() (*ReferenceNameIterator, error) {
var ptr *C.git_reference_iterator
runtime.LockOSThread()
defer runtime.UnlockOSThread()
ret := C.git_reference_iterator_new(&ptr, repo.ptr)
if ret < 0 {
return nil, MakeGitError(ret)
}
iter := newReferenceIteratorFromC(ptr, repo)
return iter.Names(), nil
}
// NewReferenceIteratorGlob creates an iterator over reference names
// that match the speicified glob. The glob is of the usual fnmatch
// type.
func (repo *Repository) NewReferenceIteratorGlob(glob string) (*ReferenceIterator, error) {
cstr := C.CString(glob)
defer C.free(unsafe.Pointer(cstr))
var ptr *C.git_reference_iterator
runtime.LockOSThread()
defer runtime.UnlockOSThread()
ret := C.git_reference_iterator_glob_new(&ptr, repo.ptr, cstr)
if ret < 0 {
return nil, MakeGitError(ret)
}
return newReferenceIteratorFromC(ptr, repo), nil
}
func (i *ReferenceIterator) Names() *ReferenceNameIterator {
return &ReferenceNameIterator{i}
}
// NextName retrieves the next reference name. If the iteration is over,
// the returned error is git.ErrIterOver
func (v *ReferenceNameIterator) Next() (string, error) {
var ptr *C.char
runtime.LockOSThread()
defer runtime.UnlockOSThread()
ret := C.git_reference_next_name(&ptr, v.ptr)
if ret < 0 {
return "", MakeGitError(ret)
}
return C.GoString(ptr), nil
}
// Next retrieves the next reference. If the iterationis over, the
// returned error is git.ErrIterOver
func (v *ReferenceIterator) Next() (*Reference, error) {
var ptr *C.git_reference
runtime.LockOSThread()
defer runtime.UnlockOSThread()
ret := C.git_reference_next(&ptr, v.ptr)
if ret < 0 {
return nil, MakeGitError(ret)
}
return newReferenceFromC(ptr, v.repo), nil
}
func newReferenceIteratorFromC(ptr *C.git_reference_iterator, r *Repository) *ReferenceIterator {
return &ReferenceIterator{
ptr: ptr,
repo: r,
}
}
// Free the reference iterator
func (v *ReferenceIterator) Free() {
runtime.SetFinalizer(v, nil)
C.git_reference_iterator_free(v.ptr)
}
// ReferenceIsValidName ensures the reference name is well-formed.
//
// Valid reference names must follow one of two patterns:
//
// 1. Top-level names must contain only capital letters and underscores,
// and must begin and end with a letter. (e.g. "HEAD", "ORIG_HEAD").
//
// 2. Names prefixed with "refs/" can be almost anything. You must avoid
// the characters '~', '^', ':', ' \ ', '?', '[', and '*', and the sequences
// ".." and " @ {" which have special meaning to revparse.
func ReferenceIsValidName(name string) bool {
cname := C.CString(name)
defer C.free(unsafe.Pointer(cname))
if C.git_reference_is_valid_name(cname) == 1 {
return true
}
return false
}
|