| /* |
| * The Apache Software License, Version 1.1 |
| * |
| * |
| * Copyright (c) 1999 The Apache Software Foundation. All rights |
| * reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * |
| * 1. Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * |
| * 2. Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in |
| * the documentation and/or other materials provided with the |
| * distribution. |
| * |
| * 3. The end-user documentation included with the redistribution, |
| * if any, must include the following acknowledgment: |
| * "This product includes software developed by the |
| * Apache Software Foundation (http://www.apache.org/)." |
| * Alternately, this acknowledgment may appear in the software itself, |
| * if and wherever such third-party acknowledgments normally appear. |
| * |
| * 4. The names "Xerces" and "Apache Software Foundation" must |
| * not be used to endorse or promote products derived from this |
| * software without prior written permission. For written |
| * permission, please contact apache@apache.org. |
| * |
| * 5. Products derived from this software may not be called "Apache", |
| * nor may "Apache" appear in their name, without prior written |
| * permission of the Apache Software Foundation. |
| * |
| * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED |
| * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
| * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE |
| * DISCLAIMED. IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR |
| * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
| * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF |
| * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND |
| * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, |
| * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT |
| * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
| * SUCH DAMAGE. |
| * ==================================================================== |
| * |
| * This software consists of voluntary contributions made by many |
| * individuals on behalf of the Apache Software Foundation and was |
| * originally based on software copyright (c) 1999, International |
| * Business Machines, Inc., http://www.apache.org. For more |
| * information on the Apache Software Foundation, please see |
| * <http://www.apache.org/>. |
| */ |
| |
| package org.apache.xerces.utils; |
| |
| import org.apache.xerces.readers.XMLEntityHandler; |
| |
| /** |
| * |
| * @version |
| */ |
| public final class ChunkyCharArray implements XMLEntityHandler.CharBuffer { |
| |
| /** |
| * Constructor |
| */ |
| public ChunkyCharArray(StringPool stringPool) { |
| fStringPool = stringPool; |
| fCurrentChunk = CharDataChunk.createChunk(stringPool, null); |
| } |
| |
| /** |
| * |
| */ |
| public int length() { |
| return fLength; |
| } |
| |
| /** |
| * |
| */ |
| public void append(char ch) { |
| try { |
| fCurrentData[fCurrentIndex] = ch; |
| } catch (ArrayIndexOutOfBoundsException ex) { |
| if (fCurrentIndex == CharDataChunk.CHUNK_SIZE) { |
| fCurrentChunk = CharDataChunk.createChunk(fStringPool, fCurrentChunk); |
| fCurrentData = new char[INITIAL_CHUNK_SIZE]; |
| fCurrentIndex = 0; |
| } else { |
| char[] newData = new char[fCurrentIndex * 2]; |
| System.arraycopy(fCurrentData, 0, newData, 0, fCurrentIndex); |
| fCurrentData = newData; |
| } |
| fCurrentChunk.setCharArray(fCurrentData); |
| fCurrentData[fCurrentIndex] = ch; |
| } catch (NullPointerException ex) { |
| fCurrentData = new char[INITIAL_CHUNK_SIZE]; |
| fCurrentChunk.setCharArray(fCurrentData); |
| fCurrentData[fCurrentIndex] = ch; |
| } |
| fCurrentIndex++; |
| fLength++; |
| } |
| |
| /** |
| * Append a <code>String</code> to this buffer |
| * |
| * @param s the string to append. |
| */ |
| public void append(String s) { |
| int slen = s.length(); |
| for (int i = 0; i < slen; i++) |
| append(s.charAt(i)); |
| } |
| |
| /** |
| * |
| */ |
| public void append(char[] ch, int offset, int length) { |
| while (length-- > 0) |
| append(ch[offset++]); |
| } |
| |
| /** |
| * Append a <code>ChunkyCharArray</code> to this buffer. |
| * |
| * @param charArray buffer to be appended. |
| * @param offset The offset within charArray of the first character. |
| * @param length The number of characters to append. |
| */ |
| public void append(ChunkyCharArray charArray, int offset, int length) { |
| fCurrentChunk.append(charArray, offset, length); |
| } |
| |
| /** |
| * |
| */ |
| public int addString(int offset, int length) { |
| if (length == 0) |
| return 0; |
| return fCurrentChunk.addString(offset, length); |
| } |
| |
| /** |
| * Add a region of this buffer to the <code>StringPool</code> as a symbol |
| * |
| * @param offset The offset within this buffer of the first character of the string |
| * @param length The number of characters in the symbol |
| */ |
| public int addSymbol(int offset, int length) { |
| if (length == 0) |
| return 0; |
| return fCurrentChunk.addSymbol(offset, length, 0); |
| } |
| |
| // |
| // Chunk size constants |
| // |
| private static final int INITIAL_CHUNK_SHIFT = 7; // 2^7 = 128 |
| private static final int INITIAL_CHUNK_SIZE = (1 << INITIAL_CHUNK_SHIFT); |
| |
| // |
| // Instance variables |
| // |
| private StringPool fStringPool = null; |
| private CharDataChunk fCurrentChunk = null; |
| private char[] fCurrentData = null; |
| private int fCurrentIndex = 0; |
| private int fLength = 0; |
| } |