blob: 6748613bfed99a7cb7099cebd172baaeeac49d12 (
plain)
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
|
package install
import (
"fmt"
"os"
"regexp"
"github.com/posener/script"
)
func lineInFile(path string, line string) bool {
return script.Cat(path).Grep(regexp.MustCompile("^"+line+"$")).Wc().Lines > 0
}
func createFile(path string, content string) error {
return script.Echo(content).ToFile(path)
}
func appendFile(path string, content string) error {
return script.Echo(content).AppendFile(path)
}
func removeFromFile(path string, line string) error {
backupPath := path + ".bck"
err := script.Cat(path).ToFile(backupPath)
if err != nil {
return fmt.Errorf("creating backup file: %s", err)
}
tmp, err := script.Cat(path).Modify(script.Grep{Re: regexp.MustCompile("^" + line + "$"), Invert: true}).ToTempFile()
if err != nil {
return fmt.Errorf("failed remove: %s", err)
}
defer os.Remove(tmp)
err = script.Cat(tmp).ToFile(path)
if err != nil {
restoreErr := script.Cat(backupPath).ToFile(path)
if restoreErr != nil {
return fmt.Errorf("failed write: %s, and failed restore: %s", err, restoreErr)
}
}
return nil
}
|
