/*
GenXQueryXTask.java: http://dev.w3.org/2007/xquery-update-10-test-suite/

Copyright (c) 2009 World Wide Web Consortium, (Massachusetts Institute of Technology,
European Research Consortium for Informatics and Mathematics, Keio University).
All Rights Reserved. This work is distributed under the W3CŪ Software License [1] 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.

[1] http://www.w3.org/Consortium/Legal/2002/copyright-software-20021231
*/


package org.w3.xqtools;

import org.apache.tools.ant.BuildException;
import org.apache.tools.ant.Task;
import org.apache.tools.ant.DirectoryScanner;
import org.apache.tools.ant.types.FileSet;
import org.apache.tools.ant.types.Mapper;
import java.util.Vector;
import java.util.Iterator;
import java.io.File;

/**
 * @author Andrew Eisenberg
 * 
 * Define a genXQueryXTask for Ant
 */

public class GenXQueryXTask extends Task {
    private String dest;

    private Vector filesets = new Vector();

    private Mapper mapper = null;

    public void execute() {

        boolean failure = false;

        // iterate over the filesets

        for (Iterator itFSets = filesets.iterator(); itFSets.hasNext();) {
            FileSet fs = (FileSet) itFSets.next();
            DirectoryScanner ds = fs.getDirectoryScanner(getProject());
            String[] includedFiles = ds.getIncludedFiles();

            // iterate over the files in the fileset

            for (int i = 0; i < includedFiles.length; i++) {

                // get the source file
                String filename = includedFiles[i];
                File source = new File(ds.getBasedir(), filename);

                // get the dest file
                String[] names = mapper.getImplementation().mapFileName(
                        filename);
                if (names.length != 1)
                    throw new BuildException("incorrect file mapping");
                File target = new File(dest, names[0]);

                // generate the XQueryX if it is necessary

                if (source.lastModified() > target.lastModified()) {
                    try {
                        GenXQueryX.generate(source.getAbsolutePath(), target
                                .getAbsolutePath());
                    } catch (UnableToGenerateXQueryX e) {
                        failure = true;
                        System.out.println(e.getMessage());
                        if (e.getCause() != null)
                            System.out.println(e.getCause().getMessage());
                        System.out.println("Error processing "
                                + source.getAbsolutePath());
                    }
                }

            }

        }

        if (failure) {
            throw new BuildException(
                    "One or more files could not be processed.");
        }
    }

    public void setDest(String dest) {
        this.dest = dest;
    }

    public void addFileset(FileSet fileset) {
        filesets.add(fileset);
    }

    public void addMapper(Mapper mapper) {
        this.mapper = mapper;
    }

}