/*
* Copyright 2013 Dan Haywood
*
* 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
*
* 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 com.danhaywood.isis.domainservice.docx.util;
import java.io.IOException;
import java.io.StringReader;
import java.util.List;
import org.jdom2.Attribute;
import org.jdom2.Content;
import org.jdom2.Document;
import org.jdom2.Element;
import org.jdom2.JDOMException;
import org.jdom2.Text;
import org.jdom2.input.SAXBuilder;
import com.danhaywood.isis.domainservice.docx.LoadInputException;
import com.danhaywood.isis.domainservice.docx.MergeException;
import com.google.common.base.Function;
public final class Jdom2 {
private Jdom2(){}
public static String textValueOf(Element htmlElement) {
List<Content> htmlContent = htmlElement.getContent();
if(htmlContent.isEmpty()) {
return null;
}
Content content = htmlContent.get(0);
if(!(content instanceof Text)) {
return null;
}
Text htmlText = (Text) content;
return normalized(htmlText.getValue());
}
private static String normalized(String value) {
String replaceAll = value.replaceAll("\\s+", " ");
return replaceAll;
}
public static Function<Element, String> textValue() {
return new Function<Element, String>(){
public String apply(Element input) {
return textValueOf(input);
}};
}
public static String attrOf(Element input, String attname) {
Attribute attribute = input.getAttribute(attname);
if(attribute == null) {
return null;
}
return attribute.getValue();
}
public static org.jdom2.Document loadInput(String html) throws LoadInputException {
try {
return new SAXBuilder().build(new StringReader(html));
} catch (JDOMException e) {
throw new LoadInputException("Unable to parse input", e);
} catch (IOException e) {
throw new LoadInputException("Unable to parse input", e);
}
}
public static Element htmlBodyFor(Document htmlDoc) throws MergeException {
Element htmlEl = htmlDoc.getRootElement();
Element bodyEl = htmlEl.getChild("body");
if (bodyEl == null) {
throw new MergeException("cannot locate body element within the input HTML");
}
return bodyEl;
}
}