| /************************************************************************ |
| * |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER |
| * |
| * Copyright 2008, 2010 Oracle and/or its affiliates. All rights reserved. |
| * |
| * Use is subject to license terms. |
| * |
| * Licensed 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. You can also |
| * obtain a copy of the License at http://odftoolkit.org/docs/license.txt |
| * |
| * 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.odftoolkit.odfdom.incubator.doc.text; |
| |
| |
| import org.odftoolkit.odfdom.pkg.OdfFileDom; |
| import org.odftoolkit.odfdom.dom.OdfDocumentNamespace; |
| import org.odftoolkit.odfdom.dom.element.text.TextLineBreakElement; |
| import org.odftoolkit.odfdom.dom.element.text.TextSElement; |
| import org.odftoolkit.odfdom.dom.element.text.TextTabElement; |
| import org.w3c.dom.Element; |
| import org.w3c.dom.Node; |
| |
| /** |
| * It's a tool class to help process white space. |
| * |
| * @author J David Eisenberg |
| * @deprecated As of release 0.8.8, replaced by {@link org.odftoolkit.simple.common.WhitespaceProcessor} in Simple API. |
| */ |
| public class OdfWhitespaceProcessor { |
| private int nSpaces; |
| private String partial; |
| private OdfFileDom owner; |
| private Element element; |
| |
| public OdfWhitespaceProcessor() { |
| |
| } |
| |
| /** |
| * Add given text content to an element, handling multiple blanks, |
| * tabs, and newlines properly. |
| * @param element the element to which content is being added |
| * @param content text content including whitespace |
| */ |
| public void append(Element element, String content) |
| { |
| int i = 0; |
| char ch; |
| |
| this.element = element; |
| partial = ""; |
| nSpaces = 0; |
| owner = (OdfFileDom) element.getOwnerDocument(); |
| |
| for (i = 0; i < content.length(); i++) |
| { |
| ch = content.charAt(i); |
| if (ch == ' ') |
| { |
| if (nSpaces == 0) |
| { |
| partial += " "; |
| } |
| nSpaces++; |
| } |
| else if (ch == '\n') |
| { |
| emitPartial(); |
| element.appendChild(new TextLineBreakElement(owner)); |
| } |
| else if (ch == '\t') |
| { |
| emitPartial(); |
| element.appendChild(new TextTabElement(owner)); |
| } |
| else if (ch != '\r') // ignore DOS half of CR-LF |
| { |
| if (nSpaces > 1) |
| { |
| emitPartial(); |
| } |
| partial += ch; |
| nSpaces = 0; |
| } |
| } |
| emitPartial(); |
| } |
| |
| /* |
| * Send out any information that has been buffered |
| */ |
| private void emitPartial() |
| { |
| /* send out any partial text */ |
| if (!partial.equals("")) |
| { |
| element.appendChild(owner.createTextNode(partial)); |
| } |
| /* and any spaces if necessary */ |
| if (nSpaces > 1) |
| { |
| TextSElement spaceElement = new TextSElement(owner); |
| spaceElement.setTextCAttribute(new Integer(nSpaces - 1)); |
| element.appendChild(spaceElement); |
| } |
| /* and reset all the counters */ |
| nSpaces = 0; |
| partial = ""; |
| } |
| |
| /** |
| * Retrieve the text content of an element. |
| * Recursively retrieves all the text nodes, expanding whitespace where |
| * necessary. Ignores any elements except <code><text:s></code>, |
| * <code><text:line-break></code> and <code><text:tab></code>. |
| * @param element an element whose text you want to retrieve |
| * @return the element's text content, with whitespace expanded |
| */ |
| public String getText(Node element) |
| { |
| String result = ""; |
| int spaceCount; |
| Node node = element.getFirstChild(); |
| while (node != null) |
| { |
| if (node.getNodeType() == Node.TEXT_NODE) |
| { |
| result += node.getNodeValue(); |
| } |
| else if (node.getNodeType() == Node.ELEMENT_NODE) |
| { |
| if (node.getLocalName().equals("s")) // text:s |
| { |
| try |
| { |
| spaceCount = Integer.parseInt( |
| ((Element) node).getAttributeNS( |
| OdfDocumentNamespace.TEXT.getUri(), "c")); |
| } |
| catch(Exception e) |
| { |
| spaceCount = 1; |
| } |
| for (int i = 0; i < spaceCount; i++) |
| { |
| result += " "; |
| } |
| } |
| else if (node.getLocalName().equals("line-break")) |
| { |
| result += "\n"; |
| } |
| else if (node.getLocalName().equals("tab")) |
| { |
| result += "\t"; |
| } |
| else |
| { |
| result = result + getText(node); |
| } |
| } |
| node = node.getNextSibling(); |
| } |
| return result; |
| } |
| |
| /** |
| * Append text content to a given element, handling whitespace properly. |
| * This is a static method that creates its own OdfWhitespaceProcessor, |
| * so that you don't have to. |
| * @param element the element to which content is being added |
| * @param content text content including whitespace |
| */ |
| public static void appendText(Element element, String content) |
| { |
| OdfWhitespaceProcessor processor = new OdfWhitespaceProcessor(); |
| processor.append(element, content); |
| } |
| } |