| /**************************************************************** |
| * 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.james.jdkim.mailets; |
| |
| import java.io.FilterOutputStream; |
| import java.io.IOException; |
| import java.io.OutputStream; |
| |
| /** |
| * Ignore writes until the given sequence is found. |
| */ |
| public class HeaderSkippingOutputStream extends FilterOutputStream { |
| |
| boolean inHeaders = true; |
| final byte[] skipTo = "\r\n\r\n".getBytes(); |
| int pos = 0; |
| |
| public HeaderSkippingOutputStream(OutputStream out) { |
| super(out); |
| } |
| |
| public void write(byte[] b, int off, int len) throws IOException { |
| if (inHeaders) { |
| for (int i = off; i < off + len; i++) { |
| if (b[i] == skipTo[pos]) { |
| pos++; |
| if (pos == skipTo.length) { |
| inHeaders = false; |
| if (len - i - 1 > 0) |
| out.write(b, i + 1, len - i - 1); |
| break; |
| } |
| } else |
| pos = 0; |
| } |
| } else { |
| out.write(b, off, len); |
| } |
| } |
| |
| public void write(int b) throws IOException { |
| if (inHeaders) { |
| if (skipTo[pos] == b) { |
| pos++; |
| if (pos == skipTo.length) |
| inHeaders = false; |
| } else |
| pos = 0; |
| } else { |
| out.write(b); |
| } |
| } |
| |
| } |