| /* |
| * 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.catalina.connector; |
| |
| import java.io.BufferedReader; |
| import java.io.IOException; |
| |
| |
| /** |
| * Coyote implementation of the buffred reader. |
| * |
| * @author Remy Maucherat |
| */ |
| public class CoyoteReader |
| extends BufferedReader { |
| |
| |
| // -------------------------------------------------------------- Constants |
| |
| |
| private static final char[] LINE_SEP = { '\r', '\n' }; |
| private static final int MAX_LINE_LENGTH = 4096; |
| |
| |
| // ----------------------------------------------------- Instance Variables |
| |
| |
| protected InputBuffer ib; |
| |
| |
| protected char[] lineBuffer = null; |
| |
| |
| // ----------------------------------------------------------- Constructors |
| |
| |
| public CoyoteReader(InputBuffer ib) { |
| super(ib, 1); |
| this.ib = ib; |
| } |
| |
| |
| // --------------------------------------------------------- Public Methods |
| |
| |
| /** |
| * Prevent cloning the facade. |
| */ |
| protected Object clone() |
| throws CloneNotSupportedException { |
| throw new CloneNotSupportedException(); |
| } |
| |
| |
| // -------------------------------------------------------- Package Methods |
| |
| |
| /** |
| * Clear facade. |
| */ |
| void clear() { |
| ib = null; |
| } |
| |
| |
| // --------------------------------------------------------- Reader Methods |
| |
| |
| public void close() |
| throws IOException { |
| ib.close(); |
| } |
| |
| |
| public int read() |
| throws IOException { |
| return ib.read(); |
| } |
| |
| |
| public int read(char[] cbuf) |
| throws IOException { |
| return ib.read(cbuf, 0, cbuf.length); |
| } |
| |
| |
| public int read(char[] cbuf, int off, int len) |
| throws IOException { |
| return ib.read(cbuf, off, len); |
| } |
| |
| |
| public long skip(long n) |
| throws IOException { |
| return ib.skip(n); |
| } |
| |
| |
| public boolean ready() |
| throws IOException { |
| return ib.ready(); |
| } |
| |
| |
| public boolean markSupported() { |
| return true; |
| } |
| |
| |
| public void mark(int readAheadLimit) |
| throws IOException { |
| ib.mark(readAheadLimit); |
| } |
| |
| |
| public void reset() |
| throws IOException { |
| ib.reset(); |
| } |
| |
| |
| public String readLine() |
| throws IOException { |
| |
| if (lineBuffer == null) { |
| lineBuffer = new char[MAX_LINE_LENGTH]; |
| } |
| |
| String result = null; |
| |
| int pos = 0; |
| int end = -1; |
| int skip = -1; |
| StringBuffer aggregator = null; |
| while (end < 0) { |
| mark(MAX_LINE_LENGTH); |
| while ((pos < MAX_LINE_LENGTH) && (end < 0)) { |
| int nRead = read(lineBuffer, pos, MAX_LINE_LENGTH - pos); |
| if (nRead < 0) { |
| if (pos == 0 && aggregator == null) { |
| return null; |
| } |
| end = pos; |
| skip = pos; |
| } |
| for (int i = pos; (i < (pos + nRead)) && (end < 0); i++) { |
| if (lineBuffer[i] == LINE_SEP[0]) { |
| end = i; |
| skip = i + 1; |
| char nextchar; |
| if (i == (pos + nRead - 1)) { |
| nextchar = (char) read(); |
| } else { |
| nextchar = lineBuffer[i+1]; |
| } |
| if (nextchar == LINE_SEP[1]) { |
| skip++; |
| } |
| } else if (lineBuffer[i] == LINE_SEP[1]) { |
| end = i; |
| skip = i + 1; |
| } |
| } |
| if (nRead > 0) { |
| pos += nRead; |
| } |
| } |
| if (end < 0) { |
| if (aggregator == null) { |
| aggregator = new StringBuffer(); |
| } |
| aggregator.append(lineBuffer); |
| pos = 0; |
| } else { |
| reset(); |
| skip(skip); |
| } |
| } |
| |
| if (aggregator == null) { |
| result = new String(lineBuffer, 0, end); |
| } else { |
| aggregator.append(lineBuffer, 0, end); |
| result = aggregator.toString(); |
| } |
| |
| return result; |
| |
| } |
| |
| |
| } |