packer-cn/config_unix.go

55 lines
969 B
Go

// +build darwin freebsd linux netbsd openbsd
package main
import (
"bytes"
"errors"
"log"
"os"
"os/exec"
"path/filepath"
"strings"
)
func configFile() (string, error) {
dir, err := homeDir()
if err != nil {
return "", err
}
return filepath.Join(dir, ".packerconfig"), nil
}
func configDir() (string, error) {
dir, err := homeDir()
if err != nil {
return "", err
}
return filepath.Join(dir, ".packer.d"), nil
}
func homeDir() (string, error) {
// First prefer the HOME environmental variable
if home := os.Getenv("HOME"); home != "" {
log.Printf("Detected home directory from env var: %s", home)
return home, nil
}
// If that fails, try the shell
var stdout bytes.Buffer
cmd := exec.Command("sh", "-c", "eval echo ~$USER")
cmd.Stdout = &stdout
if err := cmd.Run(); err != nil {
return "", err
}
result := strings.TrimSpace(stdout.String())
if result == "" {
return "", errors.New("blank output")
}
return result, nil
}