packer-cn/command/fix/command.go

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package fix
import (
"encoding/json"
"flag"
"fmt"
"github.com/mitchellh/packer/packer"
"os"
"strings"
)
type Command byte
func (Command) Help() string {
return strings.TrimSpace(helpString)
}
func (c Command) Run(env packer.Environment, args []string) int {
cmdFlags := flag.NewFlagSet("fix", flag.ContinueOnError)
cmdFlags.Usage = func() { env.Ui().Say(c.Help()) }
if err := cmdFlags.Parse(args); err != nil {
return 1
}
args = cmdFlags.Args()
if len(args) != 1 {
cmdFlags.Usage()
return 1
}
// Read the file for decoding
tplF, err := os.Open(args[0])
if err != nil {
env.Ui().Error(fmt.Sprintf("Error opening template: %s", err))
return 1
}
defer tplF.Close()
// Decode the JSON into a generic map structure
var templateData map[string]interface{}
decoder := json.NewDecoder(tplF)
if err := decoder.Decode(&templateData); err != nil {
env.Ui().Error(fmt.Sprintf("Error parsing template: %s", err))
return 1
}
// Close the file since we're done with that
tplF.Close()
return 0
}
func (c Command) Synopsis() string {
return "fixes templates from old versions of packer"
}