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
|
// Copyright 2015 Google Inc. 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 blueprint
import (
"fmt"
"reflect"
"sort"
"github.com/google/blueprint/pathtools"
)
type GlobPath struct {
Pattern string
Excludes []string
Files []string
Deps []string
Name string
}
func verifyGlob(fileName, pattern string, excludes []string, g GlobPath) {
if pattern != g.Pattern {
panic(fmt.Errorf("Mismatched patterns %q and %q for glob file %q", pattern, g.Pattern, fileName))
}
if !reflect.DeepEqual(g.Excludes, excludes) {
panic(fmt.Errorf("Mismatched excludes %v and %v for glob file %q", excludes, g.Excludes, fileName))
}
}
func (c *Context) glob(pattern string, excludes []string) ([]string, error) {
fileName := globToFileName(pattern, excludes)
// Try to get existing glob from the stored results
c.globLock.Lock()
g, exists := c.globs[fileName]
c.globLock.Unlock()
if exists {
// Glob has already been done, double check it is identical
verifyGlob(fileName, pattern, excludes, g)
return g.Files, nil
}
// Get a globbed file list
files, deps, err := pathtools.GlobWithExcludes(pattern, excludes)
if err != nil {
return nil, err
}
// Store the results
c.globLock.Lock()
if g, exists = c.globs[fileName]; !exists {
c.globs[fileName] = GlobPath{pattern, excludes, files, deps, fileName}
}
c.globLock.Unlock()
// Getting the list raced with another goroutine, throw away the results and use theirs
if exists {
verifyGlob(fileName, pattern, excludes, g)
return g.Files, nil
}
return files, nil
}
func (c *Context) Globs() []GlobPath {
fileNames := make([]string, 0, len(c.globs))
for k := range c.globs {
fileNames = append(fileNames, k)
}
sort.Strings(fileNames)
globs := make([]GlobPath, len(fileNames))
for i, fileName := range fileNames {
globs[i] = c.globs[fileName]
}
return globs
}
func globToString(pattern string) string {
ret := ""
for _, c := range pattern {
switch {
case c >= 'a' && c <= 'z',
c >= 'A' && c <= 'Z',
c >= '0' && c <= '9',
c == '_', c == '-', c == '/':
ret += string(c)
default:
ret += "_"
}
}
return ret
}
func globToFileName(pattern string, excludes []string) string {
ret := globToString(pattern)
for _, e := range excludes {
ret += "__" + globToString(e)
}
return ret + ".glob"
}
|
