1/*
2 * Copyright (C) 2015 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 *      http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16package com.android.voicemail.impl.mail.utility;
17
18import java.io.FilterOutputStream;
19import java.io.IOException;
20import java.io.OutputStream;
21
22public class EOLConvertingOutputStream extends FilterOutputStream {
23  int lastChar;
24
25  public EOLConvertingOutputStream(OutputStream out) {
26    super(out);
27  }
28
29  @Override
30  public void write(int oneByte) throws IOException {
31    if (oneByte == '\n') {
32      if (lastChar != '\r') {
33        super.write('\r');
34      }
35    }
36    super.write(oneByte);
37    lastChar = oneByte;
38  }
39
40  @Override
41  public void flush() throws IOException {
42    if (lastChar == '\r') {
43      super.write('\n');
44      lastChar = '\n';
45    }
46    super.flush();
47  }
48}
49