| /* |
| * $Id$ |
| * |
| * The Apache Software License, Version 1.1 |
| * |
| * |
| * Copyright (c) 2000 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 "Crimson" 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, Sun Microsystems, Inc., |
| * http://www.sun.com. For more information on the Apache Software |
| * Foundation, please see <http://www.apache.org/>. |
| */ |
| |
| package org.apache.xerces.tree; |
| |
| |
| import java.io.Writer; |
| import java.io.IOException; |
| |
| import org.w3c.dom.*; |
| |
| |
| /** |
| * Node representing XML character data, such as text (including |
| * CDATA sections and comments). |
| * |
| * <P> At this time this uses an unsophisticated representation |
| * which is not suited for complex editing operations. |
| * |
| * @author David Brownell |
| * @version $Revision$ |
| */ |
| // public |
| abstract class DataNode extends NodeBase implements CharacterData |
| { |
| // package private |
| char data []; |
| static NodeListImpl childNodes = new NodeListImpl (); |
| |
| /* |
| * Constructs a data object with no text and unattached |
| * to any document. |
| */ |
| DataNode () { } |
| |
| |
| /* |
| * Constructs data node by copying text from the input buffer. |
| */ |
| DataNode (char buf [], int offset, int len) |
| { |
| data = new char [len]; |
| System.arraycopy (buf, offset, data, 0, len); |
| } |
| |
| /* |
| * Constructs a data node by copying text from the string. |
| */ |
| DataNode (String s) |
| { |
| if (s != null) { |
| data = new char [s.length ()]; |
| s.getChars (0, data.length, data, 0); |
| } else |
| data = new char [0]; |
| } |
| |
| /** |
| * Returns the text of the node. This may be modified by |
| * the caller only if the length remains unchanged. |
| */ |
| public char [] getText () { return data; } |
| |
| /** |
| * Assigns the text of the node. The buffer is consumed; the |
| * caller should make copies accordingly. |
| */ |
| public void setText (char buf []) { data = buf; } |
| |
| /** |
| * Returns the contents of this text as a String. |
| */ |
| public String toString () { return new String (data); } |
| |
| |
| |
| // DOM support |
| |
| /** DOM: Returns the text data as a string. */ |
| public String getData () { return toString (); } |
| |
| /** DOM: Assigns the text data. */ |
| public void setData (String data) { |
| if (isReadonly ()) |
| throw new DomEx (DomEx.NO_MODIFICATION_ALLOWED_ERR); |
| |
| if (data == null) { |
| setText (new char [0]); |
| } else { |
| setText (data.toCharArray ()); |
| } |
| } |
| |
| /** DOM: Returns the length of the node's data. */ |
| public int getLength () |
| { return data == null ? 0 : data.length; } |
| |
| /** |
| * DOM: Returns the specified substring of the data in this node. |
| */ |
| public String substringData (int offset, int count) |
| throws DOMException |
| { |
| if (offset < 0 || offset > data.length || count < 0) |
| throw new DomEx (DOMException.INDEX_SIZE_ERR); |
| |
| count = Math.min (count, data.length - offset); |
| return new String (data, offset, count); |
| } |
| |
| /** |
| * DOM: Appends the string to the existing stored data. |
| */ |
| public void appendData (String newData) |
| { |
| if (isReadonly ()) |
| throw new DomEx (DomEx.NO_MODIFICATION_ALLOWED_ERR); |
| int length = newData.length (); |
| char tmp [] = new char [length + data.length]; |
| |
| System.arraycopy (data, 0, tmp, 0, data.length); |
| newData.getChars (0, length, tmp, data.length); |
| data = tmp; |
| } |
| |
| /** |
| * DOM: Inserts the given data into the existing stored data |
| * at the specified offset. |
| */ |
| public void insertData (int offset, String newData) |
| throws DOMException |
| { |
| if (isReadonly ()) |
| throw new DomEx (DomEx.NO_MODIFICATION_ALLOWED_ERR); |
| |
| if (offset < 0 || offset >= data.length) |
| throw new DomEx (DOMException.INDEX_SIZE_ERR); |
| |
| int length = newData.length (); |
| char tmp [] = new char [length + data.length]; |
| |
| System.arraycopy (data, 0, tmp, 0, offset); |
| newData.getChars (0, length, tmp, offset); |
| System.arraycopy (data, offset, |
| tmp, offset + length, |
| data.length - offset); |
| data = tmp; |
| } |
| |
| /** |
| * DOM: Removes a range of characters from the text. |
| */ |
| public void deleteData (int offset, int count) |
| throws DOMException |
| { |
| char tmp []; |
| |
| if (isReadonly ()) |
| throw new DomEx (DomEx.NO_MODIFICATION_ALLOWED_ERR); |
| |
| if (offset < 0 || offset >= data.length || count < 0) |
| throw new DomEx (DOMException.INDEX_SIZE_ERR); |
| count = Math.min (count, data.length - offset); |
| |
| tmp = new char [data.length - count]; |
| System.arraycopy (data, 0, tmp, 0, offset); |
| System.arraycopy (data, offset + count, tmp, offset, |
| tmp.length - offset); |
| data = tmp; |
| } |
| |
| /** |
| * DOM: Replaces <em>count</em> characters starting at the specified |
| * <em>offset</em> in the data with the characters from the |
| * specified <em>arg</em>. |
| */ |
| public void replaceData (int offset, int count, String arg) |
| throws DOMException |
| { |
| if (isReadonly ()) |
| throw new DomEx (DomEx.NO_MODIFICATION_ALLOWED_ERR); |
| |
| if (offset < 0 || offset >= data.length || count < 0) |
| throw new DomEx (DOMException.INDEX_SIZE_ERR); |
| |
| if ((offset + count) >= data.length) { |
| deleteData (offset, count); |
| appendData (arg); |
| } else if (arg.length () == count) { |
| arg.getChars (0, (arg.length ()), data, offset); |
| } else { |
| char tmp [] = new char [data.length + (arg.length () - count)]; |
| System.arraycopy (data, 0, tmp, 0, offset); |
| arg.getChars (0, (arg.length ()), tmp, offset); |
| System.arraycopy (data, (offset + count), tmp, (offset + |
| arg.length ()), data.length -(offset + count)); |
| data = tmp; |
| } |
| } |
| |
| /** |
| * DOM: Returns the children of this node. |
| */ |
| public NodeList getChildNodes () { return childNodes; } |
| |
| /** |
| * DOM: Returns the node's character data. |
| */ |
| public String getNodeValue () { return getData (); } |
| |
| /** |
| * DOM: Assigns the node's character data. |
| */ |
| public void setNodeValue (String value) { setData (value); } |
| |
| static final class NodeListImpl implements NodeList { |
| public Node item (int i) { return null;} |
| public int getLength () { return 0;} |
| } |
| } |