forked from cloudfoundry/cli
-
Notifications
You must be signed in to change notification settings - Fork 0
/
zipper.go
133 lines (106 loc) · 2.56 KB
/
zipper.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
package app_files
import (
"archive/zip"
"io"
"os"
"path/filepath"
"github.com/cloudfoundry/cli/cf/errors"
"github.com/cloudfoundry/gofileutils/fileutils"
)
type Zipper interface {
Zip(dirToZip string, targetFile *os.File) (err error)
IsZipFile(path string) bool
Unzip(appDir string, destDir string) (err error)
GetZipSize(zipFile *os.File) (int64, error)
}
type ApplicationZipper struct{}
func (zipper ApplicationZipper) Zip(dirOrZipFile string, targetFile *os.File) (err error) {
if zipper.IsZipFile(dirOrZipFile) {
err = fileutils.CopyPathToWriter(dirOrZipFile, targetFile)
} else {
err = writeZipFile(dirOrZipFile, targetFile)
}
targetFile.Seek(0, os.SEEK_SET)
return
}
func (zipper ApplicationZipper) IsZipFile(file string) (result bool) {
_, err := zip.OpenReader(file)
return err == nil
}
func writeZipFile(dir string, targetFile *os.File) error {
isEmpty, err := fileutils.IsDirEmpty(dir)
if err != nil {
return err
}
if isEmpty {
return errors.NewEmptyDirError(dir)
}
writer := zip.NewWriter(targetFile)
defer writer.Close()
appfiles := ApplicationFiles{}
return appfiles.WalkAppFiles(dir, func(fileName string, fullPath string) error {
fileInfo, err := os.Stat(fullPath)
if err != nil {
return err
}
header, err := zip.FileInfoHeader(fileInfo)
if err != nil {
return err
}
header.Name = filepath.ToSlash(fileName)
if fileInfo.IsDir() {
header.Name += "/"
}
zipFilePart, err := writer.CreateHeader(header)
if err != nil {
return err
}
if fileInfo.IsDir() {
return nil
} else {
return fileutils.CopyPathToWriter(fullPath, zipFilePart)
}
})
}
func (zipper ApplicationZipper) Unzip(appDir string, destDir string) (err error) {
r, err := zip.OpenReader(appDir)
if err != nil {
return
}
defer r.Close()
for _, f := range r.File {
func() {
// Don't try to extract directories
if f.FileInfo().IsDir() {
return
}
var rc io.ReadCloser
rc, err = f.Open()
if err != nil {
return
}
// functional scope from above is important
// otherwise this only closes the last file handle
defer rc.Close()
destFilePath := filepath.Join(destDir, f.Name)
err = fileutils.CopyReaderToPath(rc, destFilePath)
if err != nil {
return
}
err = os.Chmod(destFilePath, f.FileInfo().Mode())
if err != nil {
return
}
}()
}
return
}
func (zipper ApplicationZipper) GetZipSize(zipFile *os.File) (int64, error) {
zipFileSize := int64(0)
stat, err := zipFile.Stat()
if err != nil {
return 0, err
}
zipFileSize = int64(stat.Size())
return zipFileSize, nil
}