yq/formatter.go
kenjones 57d5afa0ae Feature: Adds formatting of yaml output
The format produced by `gopkg.in/yaml.v2` produces output while valid
is not easy to read especially for arrays.
Adds formatter to handle formatting the marshalled yaml content.
Applies similar logic used by `encoding/json.Indent`.

Resolves: #25
2017-09-26 07:14:41 -04:00

37 lines
611 B
Go

package main
import (
"bytes"
"fmt"
"io"
yaml "gopkg.in/yaml.v2"
)
func format(context interface{}) (string, error) {
out, err := yaml.Marshal(context)
if err != nil {
return "", fmt.Errorf("error printing yaml: %v", err)
}
var dst bytes.Buffer
// add error checking if indent expanded to ever return an error
_ = indent(&dst, out)
return dst.String(), nil
}
func indent(dst io.ByteWriter, src []byte) error {
for _, c := range src {
switch c {
case '-':
_ = dst.WriteByte(' ')
_ = dst.WriteByte(' ')
_ = dst.WriteByte(c)
default:
_ = dst.WriteByte(c)
}
}
return nil
}