| /* |
| * 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.axiom.om.util; |
| |
| import org.apache.commons.logging.Log; |
| |
| import java.io.IOException; |
| import java.io.OutputStream; |
| |
| /** |
| * LogOutputStream |
| * Writes to log.debug() |
| * Also counts the number of bytes |
| */ |
| public class LogOutputStream extends OutputStream { |
| |
| private byte[] temp = new byte[1]; |
| private boolean isDebugEnabled = false; |
| private long count = 0; |
| private Log log; |
| private int BUFFER_LEN = 4 * 1024; |
| private byte[] buffer = new byte[BUFFER_LEN]; |
| private int bufferIndex = 0; |
| private int limit; |
| |
| public LogOutputStream(Log log, int limit) { |
| isDebugEnabled = log.isDebugEnabled(); |
| this.log = log; |
| this.limit = limit; |
| } |
| |
| public long getLength() { |
| return count; |
| } |
| |
| public void close() throws IOException { |
| if (bufferIndex > 0) { |
| log.debug(new String(buffer, 0, bufferIndex)); |
| bufferIndex = 0; |
| } |
| buffer = null; |
| temp = null; |
| log = null; |
| } |
| |
| |
| public void flush() throws IOException { |
| // noop |
| } |
| |
| |
| public void write(byte[] b, int off, int len) throws IOException { |
| |
| // Adjust total count |
| // Adjust length to write |
| if (count >= limit) { |
| count += len; |
| return; |
| } else if (count + len >= limit) { |
| count += len; |
| len = (int) (len - (limit - count)); // adjust length to write |
| } else { |
| count += len; |
| } |
| |
| if (isDebugEnabled) { |
| if (len + bufferIndex < BUFFER_LEN) { |
| // buffer the text |
| System.arraycopy(b, off, buffer, bufferIndex, len); |
| bufferIndex += len; |
| } else { |
| // write buffered text |
| if (bufferIndex > 0) { |
| log.debug(new String(buffer, 0, bufferIndex)); |
| bufferIndex = 0; |
| } |
| // buffer or write remaining text |
| if (len + bufferIndex < BUFFER_LEN) { |
| System.arraycopy(b, off, buffer, bufferIndex, len); |
| bufferIndex += len; |
| } else { |
| log.debug(new String(b, off, len)); |
| } |
| } |
| } |
| |
| } |
| |
| public void write(byte[] b) throws IOException { |
| this.write(b, 0, b.length); |
| } |
| |
| |
| |
| public void write(int b) throws IOException { |
| temp[0] = (byte) b; |
| this.write(temp, 0, 1); |
| } |
| |
| } |