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//========================================================================
//Copyright 2012 Mort Bay Consulting Pty. Ltd.
//------------------------------------------------------------------------
//All rights reserved. This program and the accompanying materials
//are made available under the terms of the Eclipse Public License v1.0
//and Apache License v2.0 which accompanies this distribution.
//The Eclipse Public License is available at
//http://www.eclipse.org/legal/epl-v10.html
//The Apache License v2.0 is available at
//http://www.opensource.org/licenses/apache2.0.php
//You may elect to redistribute this code under either of these licenses.
//========================================================================
package org.eclipse.jetty.plugins.util;
import java.io.File;
import java.io.FileReader;
import java.io.IOException;
import org.xml.sax.Attributes;
import org.xml.sax.ContentHandler;
import org.xml.sax.InputSource;
import org.xml.sax.Locator;
import org.xml.sax.SAXException;
import org.xml.sax.XMLReader;
import org.xml.sax.helpers.XMLReaderFactory;
public class MavenUtils
{
private final static String DEFAULT_REPOSITORY_LOCATION = System.getProperty("user.home") + "/.m2/repository/";
/**
* Looks for maven's settings.xml in $M2_HOME/conf/settings.xml
*
* @return a file representing the global settings.xml
*/
static File findGlobalSettingsXml()
{
String m2Home = System.getenv("M2_HOME");
return new File(m2Home + "/conf/settings.xml");
}
/**
* Looks for maven's settings.xml in ${user.home}/.m2/settings.xml
*
* @return a file representing the user's settings.xml
*/
static File findUserSettingsXml()
{
String userHome = System.getProperty("user.home");
return new File(userHome + "/.m2/settings.xml");
}
/**
* Read the local repository location from settings.xml. A setting in the user's settings.xml will override the
* global one.
*
* @return location of the local maven repo
*/
public static String getLocalRepositoryLocation()
{
String repositoryLocation = DEFAULT_REPOSITORY_LOCATION;
try
{
// find the global setting
String tempRepositoryLocation = parseSettingsXml(findGlobalSettingsXml());
if (tempRepositoryLocation != null)
repositoryLocation = tempRepositoryLocation;
// override with user settings.xml
tempRepositoryLocation = parseSettingsXml(findUserSettingsXml());
if (tempRepositoryLocation != null)
repositoryLocation = tempRepositoryLocation;
}
catch (IOException | SAXException e)
{
throw new IllegalStateException(e);
}
return repositoryLocation;
}
private static String parseSettingsXml(File settingsXml) throws IOException, SAXException
{
if(!settingsXml.exists())
return null;
// readability is more important than efficiency here, so we just recreate those objects
XMLReader reader = XMLReaderFactory.createXMLReader();
SettingsXmlContentHandler settingsXmlContentHandler = new SettingsXmlContentHandler();
reader.setContentHandler(settingsXmlContentHandler);
InputSource source = new InputSource(new FileReader(settingsXml));
reader.parse(source);
return settingsXmlContentHandler.getRepositoryLocation();
}
private static class SettingsXmlContentHandler implements ContentHandler
{
private String repositoryLocation;
private String currentValue;
@Override
public void characters(char[] ch, int start, int length) throws SAXException
{
currentValue = new String(ch, start, length);
}
@Override
public void endElement(String uri, String localName, String qName) throws SAXException
{
if (localName.equals("localRepository"))
{
repositoryLocation = currentValue;
}
}
public String getRepositoryLocation()
{
return repositoryLocation;
}
@Override
public void setDocumentLocator(Locator locator)
{
}
@Override
public void startDocument() throws SAXException
{
}
@Override
public void endDocument() throws SAXException
{
}
@Override
public void startPrefixMapping(String prefix, String uri) throws SAXException
{
}
@Override
public void endPrefixMapping(String prefix) throws SAXException
{
}
@Override
public void startElement(String uri, String localName, String qName, Attributes attributes) throws SAXException
{
}
@Override
public void ignorableWhitespace(char[] ch, int start, int length) throws SAXException
{
}
@Override
public void processingInstruction(String target, String data) throws SAXException
{
}
@Override
public void skippedEntity(String name) throws SAXException
{
}
}
}
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