org.exist.git.xquery.Log.java Source code

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Here is the source code for org.exist.git.xquery.Log.java

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/*
 *  eXist Open Source Native XML Database
 *  Copyright (C) 2012-2013 The eXist Project
 *  http://exist-db.org
 *
 *  This program is free software; you can redistribute it and/or
 *  modify it under the terms of the GNU Lesser General Public License
 *  as published by the Free Software Foundation; either version 2
 *  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 Lesser General Public License for more details.
 *
 *  You should have received a copy of the GNU Lesser General Public
 *  License along with this library; if not, write to the Free Software
 *  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
 *
 *  $Id$
 */
package org.exist.git.xquery;

import static org.exist.git.xquery.Module.*;

import java.io.File;

import org.eclipse.jgit.api.Git;
import org.eclipse.jgit.lib.PersonIdent;
import org.eclipse.jgit.revwalk.RevCommit;

import org.exist.dom.QName;
import org.exist.memtree.MemTreeBuilder;
import org.exist.util.io.Resource;
import org.exist.xquery.*;
import org.exist.xquery.value.*;
import org.xml.sax.helpers.AttributesImpl;

/**
 * 
 * @author <a href="mailto:shabanovd@gmail.com">Dmitriy Shabanov</a>
 */
public class Log extends BasicFunction {

    public final static FunctionSignature signatures[] = {
            new FunctionSignature(new QName("log", NAMESPACE_URI, PREFIX), "",
                    new SequenceType[] { new FunctionParameterSequenceType("localPath", Type.STRING,
                            Cardinality.EXACTLY_ONE, "Local path") },
                    new FunctionReturnSequenceType(Type.NODE, Cardinality.ZERO_OR_MORE, "Logs")) };

    public Log(XQueryContext context, FunctionSignature signature) {
        super(context, signature);
    }

    @Override
    public Sequence eval(Sequence[] args, Sequence contextSequence) throws XPathException {

        try {
            String localPath = args[0].getStringValue();
            if (!(localPath.endsWith("/")))
                localPath += File.separator;

            //           Repository localRepo = new FileRepository(localPath + ".git");
            //           Git git = new Git(localRepo);

            Git git = Git.open(new Resource(localPath), FS);

            MemTreeBuilder builder = context.getDocumentBuilder();

            AttributesImpl attribs = new AttributesImpl();
            attribs.addAttribute(NAMESPACE_URI, "local-path", PREFIX + ":local-path", "CDATA", localPath);

            int nodeNr = builder.startElement(LOG_ELEMENT, attribs);

            for (RevCommit commit : git.log().call()) {
                //                commit.getParentCount();
                //                commit.getParents();

                attribs = new AttributesImpl();
                attribs.addAttribute(NAMESPACE_URI, "id", PREFIX + ":id", "CDATA", commit.name());

                attribs.addAttribute(NAMESPACE_URI, "time", PREFIX + ":time", "CDATA",
                        String.valueOf(commit.getCommitTime() * 1000L));

                builder.startElement(COMMIT_ELEMENT, attribs);

                PersonIdent authorIdent = commit.getAuthorIdent();
                builder.startElement(AUTHOR_ELEMENT, null);
                builder.startElement(AUTHOR_NAME_ELEMENT, null);
                builder.characters(authorIdent.getName());
                builder.endElement();
                builder.startElement(AUTHOR_EMAIL_ELEMENT, null);
                builder.characters(authorIdent.getEmailAddress());
                builder.endElement();
                builder.endElement();

                builder.startElement(MESSAGE_ELEMENT, null);
                builder.characters(commit.getFullMessage());
                builder.endElement();

                builder.endElement();
            }

            builder.endElement();

            return builder.getDocument().getNode(nodeNr);
        } catch (Throwable e) {
            throw new XPathException(this, Module.EXGIT001, e);
        }
    }

    private final static QName LOG_ELEMENT = new QName("log", NAMESPACE_URI, PREFIX);
    private final static QName COMMIT_ELEMENT = new QName("commit", NAMESPACE_URI, PREFIX);
    private final static QName AUTHOR_ELEMENT = new QName("author", NAMESPACE_URI, PREFIX);
    private final static QName AUTHOR_NAME_ELEMENT = new QName("name", NAMESPACE_URI, PREFIX);
    private final static QName AUTHOR_EMAIL_ELEMENT = new QName("email", NAMESPACE_URI, PREFIX);
    private final static QName MESSAGE_ELEMENT = new QName("message", NAMESPACE_URI, PREFIX);
}