| /* |
| * 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. |
| */ |
| |
| /* $Id: Accessibility.java 1343632 2012-05-29 09:48:03Z vhennebert $ */ |
| package org.apache.fop.configuration; |
| |
| import java.io.StringWriter; |
| import java.util.ArrayList; |
| import java.util.Collections; |
| import java.util.List; |
| |
| import javax.xml.parsers.DocumentBuilder; |
| import javax.xml.parsers.DocumentBuilderFactory; |
| import javax.xml.parsers.ParserConfigurationException; |
| import javax.xml.transform.OutputKeys; |
| import javax.xml.transform.Transformer; |
| import javax.xml.transform.TransformerException; |
| import javax.xml.transform.TransformerFactory; |
| import javax.xml.transform.dom.DOMSource; |
| import javax.xml.transform.stream.StreamResult; |
| |
| import org.w3c.dom.Document; |
| import org.w3c.dom.Element; |
| import org.w3c.dom.NamedNodeMap; |
| import org.w3c.dom.Node; |
| import org.w3c.dom.NodeList; |
| |
| public class DefaultConfiguration implements Configuration { |
| |
| static final DocumentBuilderFactory DBF = DocumentBuilderFactory.newInstance(); |
| |
| static { |
| DBF.setNamespaceAware(false); |
| DBF.setValidating(false); |
| DBF.setIgnoringComments(true); |
| DBF.setIgnoringElementContentWhitespace(true); |
| DBF.setExpandEntityReferences(true); |
| } |
| |
| /** |
| * @deprecated For debug only. |
| */ |
| public static String toString(Document document) { |
| try { |
| Transformer transformer = TransformerFactory.newInstance().newTransformer(); |
| transformer.setOutputProperty(OutputKeys.INDENT, "yes"); |
| transformer.setOutputProperty("{http://xml.apache.org/xslt}indent-amount", "2"); |
| //initialize StreamResult with File object to save to file |
| StreamResult result = new StreamResult(new StringWriter()); |
| DOMSource source = new DOMSource(document); |
| transformer.transform(source, result); |
| return result.getWriter().toString(); |
| } catch (TransformerException e) { |
| throw new IllegalStateException(e); |
| } |
| } |
| |
| private Element element; |
| |
| public DefaultConfiguration(String key) { |
| DocumentBuilder builder = null; |
| try { |
| builder = DBF.newDocumentBuilder(); |
| } catch (ParserConfigurationException e) { |
| e.printStackTrace(); |
| throw new IllegalStateException(e); |
| } |
| Document doc = builder.newDocument(); |
| // create the root element node |
| element = doc.createElement(key); |
| doc.appendChild(element); |
| } |
| |
| DefaultConfiguration(Element element) { |
| this.element = element; |
| } |
| |
| Element getElement() { |
| return element; |
| } |
| |
| public void addChild(DefaultConfiguration configuration) { |
| Element node = (Element) element.getOwnerDocument().importNode(configuration.getElement(), true); |
| element.appendChild(node); |
| } |
| |
| String getValue0() { |
| String result = element.getTextContent(); |
| if (result == null) { |
| result = ""; |
| } |
| return result; |
| } |
| |
| @Override |
| public Configuration getChild(String key) { |
| NodeList nl = element.getChildNodes(); |
| for (int i = 0; i < nl.getLength(); ++i) { |
| Node n = nl.item(i); |
| if (n.getNodeName().equals(key)) { |
| return new DefaultConfiguration((Element) n); |
| } |
| } |
| return NullConfiguration.INSTANCE; |
| } |
| |
| @Override |
| public Configuration getChild(String key, boolean required) { |
| Configuration result = getChild(key); |
| if (!required && result == NullConfiguration.INSTANCE) { |
| return null; |
| } |
| if (required && (result == null || result == NullConfiguration.INSTANCE)) { |
| // throw new IllegalStateException("No child '" + key + "'"); |
| return NullConfiguration.INSTANCE; |
| } |
| return result; |
| } |
| |
| @Override |
| public Configuration[] getChildren(String key) { |
| ArrayList<Configuration> result = new ArrayList<>(1); |
| NodeList nl = element.getChildNodes(); |
| for (int i = 0; i < nl.getLength(); ++i) { |
| Node n = nl.item(i); |
| if (n.getNodeName().equals(key)) { |
| result.add(new DefaultConfiguration((Element) n)); |
| } |
| } |
| return result.toArray(new Configuration[0]); |
| } |
| |
| @Override |
| public String[] getAttributeNames() { |
| NamedNodeMap nnm = element.getAttributes(); |
| String[] result = new String[nnm.getLength()]; |
| for (int i = 0; i < nnm.getLength(); ++i) { |
| Node n = nnm.item(i); |
| result[i] = n.getNodeName(); |
| } |
| return result; |
| } |
| |
| @Override |
| public String getAttribute(String key) { |
| String result = element.getAttribute(key); |
| if ("".equals(result)) { |
| result = null; |
| } |
| return result; |
| } |
| |
| @Override |
| public String getAttribute(String key, String defaultValue) { |
| String result = getAttribute(key); |
| if (result == null || "".equals(result)) { |
| result = defaultValue; |
| } |
| return result; |
| } |
| |
| @Override |
| public boolean getAttributeAsBoolean(String key, boolean defaultValue) { |
| String result = getAttribute(key); |
| if (result == null || "".equals(result)) { |
| return defaultValue; |
| } |
| return "true".equalsIgnoreCase(result) || "yes".equalsIgnoreCase(result); |
| } |
| |
| @Override |
| public float getAttributeAsFloat(String key) throws ConfigurationException { |
| return Float.parseFloat(getAttribute(key)); |
| } |
| |
| @Override |
| public float getAttributeAsFloat(String key, float defaultValue) { |
| String result = getAttribute(key); |
| if (result == null || "".equals(result)) { |
| return defaultValue; |
| } |
| return Float.parseFloat(result); |
| } |
| |
| @Override |
| public int getAttributeAsInteger(String key, int defaultValue) { |
| String result = getAttribute(key); |
| if (result == null || "".equals(result)) { |
| return defaultValue; |
| } |
| return Integer.parseInt(result); |
| } |
| |
| @Override |
| public String getValue() throws ConfigurationException { |
| String result = getValue0(); |
| if (result == null || "".equals(result)) { |
| throw new ConfigurationException("No value in " + element.getNodeName()); |
| } |
| return result; |
| } |
| |
| @Override |
| public String getValue(String defaultValue) { |
| String result = getValue0(); |
| if (result == null || "".equals(result)) { |
| result = defaultValue; |
| } |
| return result; |
| } |
| |
| @Override |
| public boolean getValueAsBoolean() throws ConfigurationException { |
| return Boolean.parseBoolean(getValue0()); |
| } |
| |
| @Override |
| public boolean getValueAsBoolean(boolean defaultValue) { |
| String result = getValue0().trim(); |
| if ("".equals(result)) { |
| return defaultValue; |
| } |
| return Boolean.parseBoolean(result); |
| } |
| |
| @Override |
| public int getValueAsInteger() throws ConfigurationException { |
| try { |
| return Integer.parseInt(getValue0()); |
| } catch (NumberFormatException e) { |
| throw new ConfigurationException("Not an integer", e); |
| } |
| } |
| |
| @Override |
| public int getValueAsInteger(int defaultValue) { |
| String result = getValue0(); |
| if (result == null || "".equals(result)) { |
| return defaultValue; |
| } |
| return Integer.parseInt(result); |
| } |
| |
| @Override |
| public float getValueAsFloat() throws ConfigurationException { |
| try { |
| return Float.parseFloat(getValue0()); |
| } catch (NumberFormatException e) { |
| throw new ConfigurationException("Not a float", e); |
| } |
| } |
| |
| @Override |
| public float getValueAsFloat(float defaultValue) { |
| String result = getValue0(); |
| if (result == null || "".equals(result)) { |
| return defaultValue; |
| } |
| return Float.parseFloat(getValue0()); |
| } |
| |
| @Override |
| public String getLocation() { |
| List<String> path = new ArrayList<String>(); |
| for (Node el = element; el != null; el = el.getParentNode()) { |
| if (el instanceof Element) { |
| path.add(((Element) el).getTagName()); |
| } |
| } |
| Collections.reverse(path); |
| |
| StringBuilder sb = new StringBuilder(); |
| for (String s : path) { |
| if (sb.length() > 0) { |
| sb.append("/"); |
| } |
| sb.append(s); |
| } |
| return sb.toString(); |
| } |
| } |