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// Copyright 2015 Google Inc. All rights reserved
//
// 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 kati
import "io"
// ssvWriter is a writer to write space separated values.
type ssvWriter struct {
w io.Writer
needsSpace bool
}
func writeByte(w io.Writer, b byte) error {
if bw, ok := w.(io.ByteWriter); ok {
return bw.WriteByte(b)
}
_, err := w.Write([]byte{b})
return err
}
// use io.WriteString to stringWrite.
func (sw *ssvWriter) Write(b []byte) {
if sw.needsSpace {
writeByte(sw.w, ' ')
}
sw.needsSpace = true
sw.w.Write(b)
}
func (sw *ssvWriter) WriteString(s string) {
if sw.needsSpace {
writeByte(sw.w, ' ')
}
sw.needsSpace = true
io.WriteString(sw.w, s)
}
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