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
|
package config
import (
"strings"
"gopkg.in/src-d/go-git.v4/plumbing"
)
const (
refSpecWildcard = "*"
refSpecForce = "+"
refSpecSeparator = ":"
)
// RefSpec is a mapping from local branches to remote references
// The format of the refspec is an optional +, followed by <src>:<dst>, where
// <src> is the pattern for references on the remote side and <dst> is where
// those references will be written locally. The + tells Git to update the
// reference even if it isn’t a fast-forward.
// eg.: "+refs/heads/*:refs/remotes/origin/*"
//
// https://git-scm.com/book/es/v2/Git-Internals-The-Refspec
type RefSpec string
// IsValid validates the RefSpec
func (s RefSpec) IsValid() bool {
spec := string(s)
if strings.Count(spec, refSpecSeparator) != 1 {
return false
}
sep := strings.Index(spec, refSpecSeparator)
if sep == len(spec) {
return false
}
ws := strings.Count(spec[0:sep], refSpecWildcard)
wd := strings.Count(spec[sep+1:], refSpecWildcard)
return ws == wd && ws < 2 && wd < 2
}
// IsForceUpdate returns if update is allowed in non fast-forward merges
func (s RefSpec) IsForceUpdate() bool {
if s[0] == refSpecForce[0] {
return true
}
return false
}
// IsDelete returns true if the refspec indicates a delete (empty src).
func (s RefSpec) IsDelete() bool {
if s[0] == refSpecSeparator[0] {
return true
}
return false
}
// Src return the src side
func (s RefSpec) Src() string {
spec := string(s)
start := strings.Index(spec, refSpecForce) + 1
end := strings.Index(spec, refSpecSeparator)
return spec[start:end]
}
// Match match the given plumbing.ReferenceName against the source
func (s RefSpec) Match(n plumbing.ReferenceName) bool {
if !s.IsWildcard() {
return s.matchExact(n)
}
return s.matchGlob(n)
}
// IsWildcard returns true if the RefSpec contains a wildcard
func (s RefSpec) IsWildcard() bool {
return strings.Index(string(s), refSpecWildcard) != -1
}
func (s RefSpec) matchExact(n plumbing.ReferenceName) bool {
return s.Src() == n.String()
}
func (s RefSpec) matchGlob(n plumbing.ReferenceName) bool {
src := s.Src()
name := n.String()
wildcard := strings.Index(src, refSpecWildcard)
var prefix, suffix string
prefix = src[0:wildcard]
if len(src) < wildcard {
suffix = src[wildcard+1 : len(suffix)]
}
return len(name) > len(prefix)+len(suffix) &&
strings.HasPrefix(name, prefix) &&
strings.HasSuffix(name, suffix)
}
// Dst returns the destination for the given remote reference
func (s RefSpec) Dst(n plumbing.ReferenceName) plumbing.ReferenceName {
spec := string(s)
start := strings.Index(spec, refSpecSeparator) + 1
dst := spec[start:]
src := s.Src()
if !s.IsWildcard() {
return plumbing.ReferenceName(dst)
}
name := n.String()
ws := strings.Index(src, refSpecWildcard)
wd := strings.Index(dst, refSpecWildcard)
match := name[ws : len(name)-(len(src)-(ws+1))]
return plumbing.ReferenceName(dst[0:wd] + match + dst[wd+1:])
}
func (s RefSpec) String() string {
return string(s)
}
// MatchAny returns true if any of the RefSpec match with the given ReferenceName
func MatchAny(l []RefSpec, n plumbing.ReferenceName) bool {
for _, r := range l {
if r.Match(n) {
return true
}
}
return false
}
|
