forked from mislav/hub
-
Notifications
You must be signed in to change notification settings - Fork 0
/
git.go
245 lines (192 loc) · 4.88 KB
/
git.go
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
package git
import (
"fmt"
"io/ioutil"
"os"
"path/filepath"
"strings"
"github.com/github/hub/cmd"
)
var GlobalFlags []string
func Version() (string, error) {
output, err := gitOutput("version")
if err != nil {
return "", fmt.Errorf("Can't load git version")
}
return output[0], nil
}
func Dir() (string, error) {
output, err := gitOutput("rev-parse", "-q", "--git-dir")
if err != nil {
return "", fmt.Errorf("Not a git repository (or any of the parent directories): .git")
}
gitDir := output[0]
gitDir, err = filepath.Abs(gitDir)
if err != nil {
return "", err
}
return gitDir, nil
}
func HasFile(segments ...string) bool {
// The blessed way to resolve paths within git dir since Git 2.5.0
output, err := gitOutput("rev-parse", "-q", "--git-path", filepath.Join(segments...))
if err == nil && output[0] != "--git-path" {
if _, err := os.Stat(output[0]); err == nil {
return true
}
}
// Fallback for older git versions
dir, err := Dir()
if err != nil {
return false
}
s := []string{dir}
s = append(s, segments...)
path := filepath.Join(s...)
if _, err := os.Stat(path); err == nil {
return true
}
return false
}
func BranchAtRef(paths ...string) (name string, err error) {
dir, err := Dir()
if err != nil {
return
}
segments := []string{dir}
segments = append(segments, paths...)
path := filepath.Join(segments...)
b, err := ioutil.ReadFile(path)
if err != nil {
return
}
n := string(b)
refPrefix := "ref: "
if strings.HasPrefix(n, refPrefix) {
name = strings.TrimPrefix(n, refPrefix)
name = strings.TrimSpace(name)
} else {
err = fmt.Errorf("No branch info in %s: %s", path, n)
}
return
}
func Editor() (string, error) {
output, err := gitOutput("var", "GIT_EDITOR")
if err != nil {
return "", fmt.Errorf("Can't load git var: GIT_EDITOR")
}
return output[0], nil
}
func Head() (string, error) {
return BranchAtRef("HEAD")
}
func SymbolicFullName(name string) (string, error) {
output, err := gitOutput("rev-parse", "--symbolic-full-name", name)
if err != nil {
return "", fmt.Errorf("Unknown revision or path not in the working tree: %s", name)
}
return output[0], nil
}
func Ref(ref string) (string, error) {
output, err := gitOutput("rev-parse", "-q", ref)
if err != nil {
return "", fmt.Errorf("Unknown revision or path not in the working tree: %s", ref)
}
return output[0], nil
}
func RefList(a, b string) ([]string, error) {
ref := fmt.Sprintf("%s...%s", a, b)
output, err := gitOutput("rev-list", "--cherry-pick", "--right-only", "--no-merges", ref)
if err != nil {
return []string{}, fmt.Errorf("Can't load rev-list for %s", ref)
}
return output, nil
}
func CommentChar() string {
char, err := Config("core.commentchar")
if err != nil {
char = "#"
}
return char
}
func Show(sha string) (string, error) {
cmd := cmd.New("git")
cmd.WithArg("show").WithArg("-s").WithArg("--format=%s%n%+b").WithArg(sha)
output, err := cmd.CombinedOutput()
output = strings.TrimSpace(output)
return output, err
}
func Log(sha1, sha2 string) (string, error) {
execCmd := cmd.New("git")
execCmd.WithArg("log").WithArg("--no-color")
execCmd.WithArg("--format=%h (%aN, %ar)%n%w(78,3,3)%s%n%+b")
execCmd.WithArg("--cherry")
shaRange := fmt.Sprintf("%s...%s", sha1, sha2)
execCmd.WithArg(shaRange)
outputs, err := execCmd.CombinedOutput()
if err != nil {
return "", fmt.Errorf("Can't load git log %s..%s", sha1, sha2)
}
return outputs, nil
}
func Remotes() ([]string, error) {
return gitOutput("remote", "-v")
}
func Config(name string) (string, error) {
return gitGetConfig(name)
}
func GlobalConfig(name string) (string, error) {
return gitGetConfig("--global", name)
}
func SetGlobalConfig(name, value string) error {
_, err := gitConfig("--global", name, value)
return err
}
func gitGetConfig(args ...string) (string, error) {
output, err := gitOutput(gitConfigCommand(args)...)
if err != nil {
return "", fmt.Errorf("Unknown config %s", args[len(args)-1])
}
if len(output) == 0 {
return "", nil
}
return output[0], nil
}
func gitConfig(args ...string) ([]string, error) {
return gitOutput(gitConfigCommand(args)...)
}
func gitConfigCommand(args []string) []string {
cmd := []string{"config"}
return append(cmd, args...)
}
func Alias(name string) (string, error) {
return Config(fmt.Sprintf("alias.%s", name))
}
func Run(command string, args ...string) error {
cmd := cmd.New("git")
for _, v := range GlobalFlags {
cmd.WithArg(v)
}
cmd.WithArg(command)
for _, a := range args {
cmd.WithArg(a)
}
return cmd.Run()
}
func gitOutput(input ...string) (outputs []string, err error) {
cmd := cmd.New("git")
for _, v := range GlobalFlags {
cmd.WithArg(v)
}
for _, i := range input {
cmd.WithArg(i)
}
out, err := cmd.CombinedOutput()
for _, line := range strings.Split(out, "\n") {
line = strings.TrimSpace(line)
if line != "" {
outputs = append(outputs, string(line))
}
}
return outputs, err
}