-
-
Notifications
You must be signed in to change notification settings - Fork 4
/
gitcha.go
180 lines (153 loc) · 4.2 KB
/
gitcha.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
package gitcha
import (
"os"
"path/filepath"
"strings"
ignore "github.com/sabhiram/go-gitignore"
)
// SearchResult combines the absolute path of a file with a FileInfo struct.
type SearchResult struct {
Path string
Info os.FileInfo
}
// GitRepoForPath returns the directory of the git repository path is a member
// of, or an error.
func GitRepoForPath(path string) (string, error) {
dir, err := filepath.Abs(path)
if err != nil {
return "", err
}
for {
st, err := os.Stat(filepath.Join(dir, ".git"))
if err == nil && st.IsDir() {
return dir, nil
}
// reached root?
if dir == filepath.Dir(dir) {
return "", nil
}
// check parent dir
dir = filepath.Dir(dir)
}
}
// IsPathInGit returns true when a path is part of a git repository.
func IsPathInGit(path string) bool {
p, err := GitRepoForPath(path)
if err != nil {
return false
}
return len(p) > 0
}
// FindAllFiles finds all files from list in path. It does not respect any
// gitignore files.
func FindAllFiles(path string, list []string) (chan SearchResult, error) {
return findFiles(path, list, nil, false)
}
// FindAllFilesExcept finds all files from list in path. It does not respect any
// gitignore files.
func FindAllFilesExcept(path string, list, ignorePatterns []string) (chan SearchResult, error) {
return findFiles(path, list, ignorePatterns, false)
}
// FindFiles finds files from list in path. It respects all .gitignores it finds
// while traversing paths.
func FindFiles(path string, list []string) (chan SearchResult, error) {
return findFiles(path, list, nil, true)
}
// FindFilesExcept finds files from a list in a path, excluding any matches in
// a given set of ignore patterns. It also respects all .gitignores it finds
// while traversing paths.
func FindFilesExcept(path string, list, ignorePatterns []string) (chan SearchResult, error) {
return findFiles(path, list, ignorePatterns, true)
}
// FindFirstFile looks for files from a list in a path, returning the first
// match it finds. It respects all .gitignores it finds along the way.
func FindFirstFile(path string, list []string) (SearchResult, error) {
ch, err := FindFilesExcept(path, list, nil)
if err != nil {
return SearchResult{}, err
}
for v := range ch {
return v, nil
}
return SearchResult{}, nil
}
func findFiles(path string, list, ignorePatterns []string, respectGitIgnore bool) (chan SearchResult, error) {
path, err := filepath.Abs(path)
if err != nil {
return nil, err
}
path, err = filepath.EvalSymlinks(path)
if err != nil {
return nil, err
}
st, err := os.Stat(path)
if err != nil {
return nil, err
}
if !st.IsDir() {
return nil, err
}
ch := make(chan SearchResult)
go func() {
defer close(ch)
var lastGit string
var gi *ignore.GitIgnore
_ = filepath.Walk(path, func(path string, info os.FileInfo, err error) error {
if respectGitIgnore {
git, _ := GitRepoForPath(path)
if git != "" && git != path {
if lastGit != git {
lastGit = git
gi, err = ignore.CompileIgnoreFile(filepath.Join(git, ".gitignore"))
}
if err == nil && gi != nil && gi.MatchesPath(strings.TrimPrefix(path, lastGit)) {
if info.IsDir() {
return filepath.SkipDir
}
return nil
}
}
}
for _, pattern := range ignorePatterns {
// If there's no path separator in the pattern try to match
// against the directory we're currently walking.
if !strings.Contains(pattern, string(os.PathSeparator)) {
dir := filepath.Dir(path)
if dir == "." {
continue // path is empty
}
pattern = filepath.Join(dir, pattern)
}
matched, err := filepath.Match(pattern, path)
if err != nil {
continue
}
if matched && info.IsDir() {
return filepath.SkipDir
}
if matched {
return nil
}
}
for _, v := range list {
matched := strings.EqualFold(filepath.Base(path), v)
if !matched {
matched, _ = filepath.Match(strings.ToLower(v), strings.ToLower(filepath.Base(path)))
}
if matched {
res, err := filepath.Abs(path)
if err == nil {
ch <- SearchResult{
Path: res,
Info: info,
}
}
// only match each path once
return nil
}
}
return nil
})
}()
return ch, nil
}