/**
* Copyright (C) 2012 - 2014 Eric Van Dewoestine
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
package org.eclim.plugin.jdt.project.classpath;
import java.util.ArrayList;
import javax.xml.xpath.XPathConstants;
import javax.xml.xpath.XPathExpression;
import org.eclim.Services;
import org.eclim.plugin.core.util.XmlUtils;
import org.eclipse.core.runtime.IPath;
import org.eclipse.core.runtime.Path;
import org.eclipse.jdt.core.JavaCore;
import org.w3c.dom.Document;
import org.w3c.dom.Element;
import org.w3c.dom.Node;
import org.w3c.dom.NodeList;
/**
* Implementation of {@link Parser} for parsing a maven pom.xml file.
*
* @author Eric Van Dewoestine
*/
public class MvnParser
extends AbstractXmlParser
{
private static final String MVN_REPO = "M2_REPO";
private static final String GROUP_ID = "groupId";
private static final String ARTIFACT_ID = "artifactId";
private static final String VERSION = "version";
private static XPathExpression xpath;
@Override
public String getClasspathVar()
{
return MVN_REPO;
}
@Override
public Dependency[] parse(Document document)
throws Exception
{
if(xpath == null){
xpath = XmlUtils.createXPathExpression(
"/project/dependencies/dependency");
}
if(JavaCore.getClasspathVariable(MVN_REPO) == null){
throw new IllegalStateException(
Services.getMessage("mvn.repo.not.set", MVN_REPO));
}
IPath path = new Path(MVN_REPO);
NodeList results = (NodeList)
xpath.evaluate(document, XPathConstants.NODESET);
ArrayList<Dependency> dependencies = new ArrayList<Dependency>();
for(int ii = 0; ii < results.getLength(); ii++){
Element element = (Element)results.item(ii);
NodeList group = element.getElementsByTagName(GROUP_ID);
NodeList artifact = element.getElementsByTagName(ARTIFACT_ID);
NodeList ver = element.getElementsByTagName(VERSION);
if (group == null || group.getLength() < 1 ||
artifact == null || artifact.getLength() < 1 ||
ver == null || ver.getLength() < 1)
{
continue;
}
Node groupId = group.item(0).getFirstChild();
Node artifactId = artifact.item(0).getFirstChild();
Node version = ver.item(0).getFirstChild();
if (groupId == null || artifactId == null || version == null){
continue;
}
String groupIdValue = groupId.getNodeValue().trim();
String artifactIdValue = artifactId.getNodeValue().trim();
String versionValue = version.getNodeValue().trim();
if (groupIdValue.length() == 0 ||
artifactIdValue.length() == 0 ||
versionValue.length() == 0)
{
continue;
}
Dependency dependency = new MvnDependency(
groupIdValue, artifactIdValue, versionValue, path);
dependency.setVariable(true);
dependencies.add(dependency);
}
return (Dependency[])
dependencies.toArray(new Dependency[dependencies.size()]);
}
}