-
Notifications
You must be signed in to change notification settings - Fork 1
/
zanzibar.go
78 lines (69 loc) · 1.39 KB
/
zanzibar.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
package main
import (
"bytes"
"errors"
"flag"
"fmt"
"io"
"log"
"os"
"strings"
"github.com/gernest/zanzibar/template"
)
func run(t *template.Template, cmds ...string) (err error) {
if len(cmds) > 0 {
for _, v := range cmds {
err = t.ExecuteTemplate(os.Stdout, v, nil)
}
return
}
return t.Execute(&writer{os.Stdout}, nil)
}
func main() {
var (
files listArg
commands listArg
base = "ZANZIBAR"
)
flag.Var(&files, "s", "a comma separated list of files to be used as build scripts")
flag.Var(&commands, "x", "comma separated list of commands to be run")
flag.Parse()
var f []string
f = append(f, base)
f = append(f, files...)
tmpl, err := template.ParseFiles(f...)
if err != nil {
log.Fatal(err)
}
err = run(tmpl, commands...)
if err != nil {
fmt.Fprintf(os.Stdout, "problem running commands %s", err)
}
}
type listArg []string
func (l *listArg) String() string {
return fmt.Sprint(*l)
}
func (l *listArg) Set(value string) error {
if len(*l) > 0 {
return errors.New("argument list flag already set")
}
for _, s := range strings.Split(value, ",") {
*l = append(*l, s)
}
return nil
}
type writer struct {
out io.Writer
}
func (w *writer) Write(p []byte) (int, error) {
s := bytes.TrimSpace(p)
if len(s) > 0 {
buf := &bytes.Buffer{}
buf.WriteString("=> ")
buf.Write(s)
buf.WriteString("\n")
return w.out.Write(buf.Bytes())
}
return 0, nil
}