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
|
package git
/*
#include <git2.h>
*/
import "C"
import (
"runtime"
"unsafe"
)
type Patch struct {
doNotCompare
ptr *C.git_patch
}
func newPatchFromC(ptr *C.git_patch) *Patch {
if ptr == nil {
return nil
}
patch := &Patch{
ptr: ptr,
}
runtime.SetFinalizer(patch, (*Patch).Free)
return patch
}
func (patch *Patch) Free() error {
if patch.ptr == nil {
return ErrInvalid
}
runtime.SetFinalizer(patch, nil)
C.git_patch_free(patch.ptr)
patch.ptr = nil
return nil
}
func (patch *Patch) String() (string, error) {
if patch.ptr == nil {
return "", ErrInvalid
}
runtime.LockOSThread()
defer runtime.UnlockOSThread()
var buf C.git_buf
ecode := C.git_patch_to_buf(&buf, patch.ptr)
runtime.KeepAlive(patch)
if ecode < 0 {
return "", MakeGitError(ecode)
}
defer C.git_buf_dispose(&buf)
return C.GoString(buf.ptr), nil
}
func toPointer(data []byte) (ptr unsafe.Pointer) {
if len(data) > 0 {
ptr = unsafe.Pointer(&data[0])
} else {
ptr = unsafe.Pointer(nil)
}
return
}
func (v *Repository) PatchFromBuffers(oldPath, newPath string, oldBuf, newBuf []byte, opts *DiffOptions) (*Patch, error) {
var patchPtr *C.git_patch
oldPtr := toPointer(oldBuf)
newPtr := toPointer(newBuf)
cOldPath := C.CString(oldPath)
defer C.free(unsafe.Pointer(cOldPath))
cNewPath := C.CString(newPath)
defer C.free(unsafe.Pointer(cNewPath))
var err error
copts := populateDiffOptions(&C.git_diff_options{}, opts, v, &err)
defer freeDiffOptions(copts)
runtime.LockOSThread()
defer runtime.UnlockOSThread()
ret := C.git_patch_from_buffers(&patchPtr, oldPtr, C.size_t(len(oldBuf)), cOldPath, newPtr, C.size_t(len(newBuf)), cNewPath, copts)
runtime.KeepAlive(oldBuf)
runtime.KeepAlive(newBuf)
if ret == C.int(ErrorCodeUser) && err != nil {
return nil, err
}
if ret < 0 {
return nil, MakeGitError(ret)
}
return newPatchFromC(patchPtr), nil
}
|
