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|
package executil
import (
"bytes"
"fmt"
"html/template"
"os/exec"
"strings"
)
type CommandData struct {
Base string
Dir string
Name string
}
func compileCommand(tmpl string, data CommandData) (*exec.Cmd, error) {
t, err := template.New("cmd").Parse(tmpl)
if err != nil {
return nil, err
}
var b bytes.Buffer
if err := t.Execute(&b, data); err != nil {
return nil, err
}
argv := strings.Split(b.String(), " ")
if len(argv) == 0 {
return nil, fmt.Errorf("template compiled to empty command")
}
cmd := exec.Command(argv[0], argv[1:]...)
cmd.Dir = data.Dir
return cmd, nil
}
func Run(command string, data CommandData) error {
if command == "" {
return nil
}
cmd, err := compileCommand(command, data)
if err != nil {
return err
}
var stderr bytes.Buffer
cmd.Stderr = &stderr
if err := cmd.Run(); err != nil {
return fmt.Errorf("stderr: %q: %w", stderr.String(), err)
}
return nil
}
|
