| /** |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you 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 org.apache.wss4j.common.util; |
| |
| import java.io.FilterOutputStream; |
| import java.io.IOException; |
| import java.io.OutputStream; |
| |
| public class CRLFOutputStream extends FilterOutputStream { |
| |
| private static final byte CR = '\r'; |
| private static final byte LF = '\n'; |
| private static final byte[] CRLF = new byte[]{CR, LF}; |
| |
| private boolean lastByteCR = false; |
| |
| public CRLFOutputStream(OutputStream out) { |
| super(out); |
| } |
| |
| @Override |
| public void write(int b) throws IOException { |
| if (b == CR) { |
| out.write(CRLF); |
| lastByteCR = true; |
| } else if (b == LF) { |
| if (lastByteCR) { |
| lastByteCR = false; |
| } else { |
| out.write(CRLF); |
| } |
| } else { |
| out.write(b); |
| lastByteCR = false; |
| } |
| } |
| |
| @Override |
| public void write(byte[] b, int off, int len) throws IOException { |
| |
| int start = off; |
| for (int i = off; i < len; i++) { |
| if (b[i] == CR) { |
| out.write(b, start, i + 1 - start); |
| out.write(LF); |
| lastByteCR = true; |
| start = i + 1; |
| } else if (b[i] == LF) { |
| if (lastByteCR) { |
| lastByteCR = false; |
| start++; |
| } else { |
| int l = i - start; |
| if (l > 0) { |
| out.write(b, start, l); |
| } |
| out.write(CRLF); |
| start = i + 1; |
| } |
| } else { |
| lastByteCR = false; |
| } |
| } |
| out.write(b, start, len - start); |
| } |
| } |