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  */
16 package com.android.phone.common.mail.utility;
17 
18 import java.io.FilterOutputStream;
19 import java.io.IOException;
20 import java.io.OutputStream;
21 
22 public class EOLConvertingOutputStream extends FilterOutputStream {
23     int lastChar;
24 
EOLConvertingOutputStream(OutputStream out)25     public EOLConvertingOutputStream(OutputStream out) {
26         super(out);
27     }
28 
29     @Override
write(int oneByte)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
flush()41     public void flush() throws IOException {
42         if (lastChar == '\r') {
43             super.write('\n');
44             lastChar = '\n';
45         }
46         super.flush();
47     }
48 }