-
-
Notifications
You must be signed in to change notification settings - Fork 7.5k
/
glob.go
183 lines (150 loc) · 3.6 KB
/
glob.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
// Copyright 2021 The Hugo Authors. All rights reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package glob
import (
"os"
"path"
"path/filepath"
"runtime"
"strings"
"sync"
"github.com/gobwas/glob"
"github.com/gobwas/glob/syntax"
)
const filepathSeparator = string(os.PathSeparator)
var (
isWindows = runtime.GOOS == "windows"
defaultGlobCache = &globCache{
isWindows: isWindows,
cache: make(map[string]globErr),
}
)
type globErr struct {
glob glob.Glob
err error
}
type globCache struct {
// Config
isWindows bool
// Cache
sync.RWMutex
cache map[string]globErr
}
func (gc *globCache) GetGlob(pattern string) (glob.Glob, error) {
var eg globErr
gc.RLock()
var found bool
eg, found = gc.cache[pattern]
gc.RUnlock()
if found {
return eg.glob, eg.err
}
var g glob.Glob
var err error
pattern = filepath.ToSlash(pattern)
g, err = glob.Compile(strings.ToLower(pattern), '/')
eg = globErr{
globDecorator{
g: g,
isWindows: gc.isWindows},
err,
}
gc.Lock()
gc.cache[pattern] = eg
gc.Unlock()
return eg.glob, eg.err
}
// Or creates a new Glob from the given globs.
func Or(globs ...glob.Glob) glob.Glob {
return globSlice{globs: globs}
}
// MatchesFunc is a convenience type to create a glob.Glob from a function.
type MatchesFunc func(s string) bool
func (m MatchesFunc) Match(s string) bool {
return m(s)
}
type globSlice struct {
globs []glob.Glob
}
func (g globSlice) Match(s string) bool {
for _, g := range g.globs {
if g.Match(s) {
return true
}
}
return false
}
type globDecorator struct {
// On Windows we may get filenames with Windows slashes to match,
// which we need to normalize.
isWindows bool
g glob.Glob
}
func (g globDecorator) Match(s string) bool {
if g.isWindows {
s = filepath.ToSlash(s)
}
s = strings.ToLower(s)
return g.g.Match(s)
}
type globDecoratorDouble struct {
lowerCase glob.Glob
originalCase glob.Glob
}
func (g globDecoratorDouble) Match(s string) bool {
return g.lowerCase.Match(s) || g.originalCase.Match(s)
}
func GetGlob(pattern string) (glob.Glob, error) {
return defaultGlobCache.GetGlob(pattern)
}
func NormalizePath(p string) string {
return strings.ToLower(NormalizePathNoLower(p))
}
func NormalizePathNoLower(p string) string {
return strings.Trim(path.Clean(filepath.ToSlash(p)), "/.")
}
// ResolveRootDir takes a normalized path on the form "assets/**.json" and
// determines any root dir, i.e. any start path without any wildcards.
func ResolveRootDir(p string) string {
parts := strings.Split(path.Dir(p), "/")
var roots []string
for _, part := range parts {
if HasGlobChar(part) {
break
}
roots = append(roots, part)
}
if len(roots) == 0 {
return ""
}
return strings.Join(roots, "/")
}
// FilterGlobParts removes any string with glob wildcard.
func FilterGlobParts(a []string) []string {
b := a[:0]
for _, x := range a {
if !HasGlobChar(x) {
b = append(b, x)
}
}
return b
}
// HasGlobChar returns whether s contains any glob wildcards.
func HasGlobChar(s string) bool {
for i := 0; i < len(s); i++ {
if syntax.Special(s[i]) {
return true
}
}
return false
}