forked from uiri/coreutils
/
unlink.go
51 lines (47 loc) · 1.31 KB
/
unlink.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
package main
import (
"fmt"
goopt "github.com/droundy/goopt"
"os"
"syscall"
)
var License = `License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law`
func version() error {
fmt.Println(goopt.Suite + " " + goopt.Version)
fmt.Println()
fmt.Println("Copyright (C) 2013 " + goopt.Author)
fmt.Println(License)
os.Exit(0)
return nil
}
func main() {
goopt.Suite = "XQZ coreutils"
goopt.Author = "William Pearson"
goopt.Version = "Unlink v0.1"
goopt.Summary = "Uses unlink to remove FILE"
goopt.Usage = func() string {
return fmt.Sprintf("Usage:\t%s FILE\n or:\t%s OPTION\n", os.Args[0], os.Args[0]) + goopt.Summary + "\n\n" + goopt.Help()
}
goopt.Description = func() string {
return goopt.Summary + "\n\nUnless an option is passed to it."
}
goopt.NoArg([]string{"-v", "--version"}, "outputs version information and exits", version)
goopt.Parse(nil)
switch {
case len(os.Args) == 1:
fmt.Println("Missing filenames")
case len(os.Args) > 2:
fmt.Println("Too many filenames")
}
if len(os.Args) != 2 {
os.Exit(1)
}
file := os.Args[1]
if err := syscall.Unlink(file); err != nil {
fmt.Println("Encountered an error during unlinking: %v", err)
os.Exit(1)
}
return
}