/
fmt.go
76 lines (66 loc) · 1.89 KB
/
fmt.go
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// Copyright © 2016 Asteris, LLC
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package cmd
import (
"bytes"
"errors"
"io/ioutil"
"os"
log "github.com/Sirupsen/logrus"
"github.com/hashicorp/hcl/hcl/printer"
"github.com/spf13/cobra"
"github.com/spf13/viper"
)
// fmtCmd represents the fmt command
var fmtCmd = &cobra.Command{
Use: "fmt",
Short: "format a source file",
PreRunE: func(cmd *cobra.Command, args []string) error {
if len(args) == 0 {
return errors.New("Need at least one module filename as argument, got 0")
}
return nil
},
Run: func(cmd *cobra.Command, args []string) {
for _, fname := range args {
flog := log.WithField("file", fname)
content, err := ioutil.ReadFile(fname)
if err != nil {
flog.WithError(err).Fatal("could not read")
}
formatted, err := printer.Format(content)
if err != nil {
flog.WithError(err).Fatal("could not format content")
}
if viper.GetBool("check") {
if !bytes.Equal(content, formatted) {
flog.Fatal("needs formatting")
}
} else {
stat, err := os.Stat(fname)
if err != nil {
flog.WithError(err).Fatal("could not stat")
}
err = ioutil.WriteFile(fname, formatted, stat.Mode())
if err != nil {
flog.WithError(err).Fatal("could not write content")
}
}
}
},
}
func init() {
fmtCmd.Flags().Bool("check", false, "only check, no writing")
RootCmd.AddCommand(fmtCmd)
}