| /* |
| Copyright 2015 The Kubernetes Authors. |
| |
| 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 crlf |
| |
| import ( |
| "bytes" |
| "io" |
| ) |
| |
| type crlfWriter struct { |
| io.Writer |
| } |
| |
| // NewCRLFWriter implements a CR/LF line ending writer used for normalizing |
| // text for Windows platforms. |
| func NewCRLFWriter(w io.Writer) io.Writer { |
| return crlfWriter{w} |
| } |
| |
| func (w crlfWriter) Write(b []byte) (n int, err error) { |
| for i, written := 0, 0; ; { |
| next := bytes.Index(b[i:], []byte("\n")) |
| if next == -1 { |
| n, err := w.Writer.Write(b[i:]) |
| return written + n, err |
| } |
| next = next + i |
| n, err := w.Writer.Write(b[i:next]) |
| if err != nil { |
| return written + n, err |
| } |
| written += n |
| n, err = w.Writer.Write([]byte("\r\n")) |
| if err != nil { |
| if n > 1 { |
| n = 1 |
| } |
| return written + n, err |
| } |
| written++ |
| i = next + 1 |
| } |
| } |