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/* The contents of this file are subject to the license and copyright terms
 * detailed in the license directory at the root of the source tree (also 
 * available online at http://fedora-commons.org/license/).
 */
package org.fcrepo.client.batch;

import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.InputStream;
import java.io.OutputStream;
import java.net.URI;
import java.util.HashMap;
import java.util.Properties;
import java.util.Vector;

import javax.xml.transform.Transformer;
import javax.xml.transform.TransformerConfigurationException;
import javax.xml.transform.TransformerException;
import javax.xml.transform.TransformerFactory;
import javax.xml.transform.stream.StreamResult;
import javax.xml.transform.stream.StreamSource;

import org.fcrepo.common.Constants;
import org.fcrepo.utilities.XmlTransformUtility;


/**
 * @author Bill Niebel
 * @version $Id$
 */
class BatchXforms
        implements Constants {

    private final HashMap formatMap =
            new HashMap();

    private String additionsPath = null;

    private String objectsPath = null;

    private String xformPath = null;

    private String modelPath = null;

    private Transformer transformer = null;

    BatchXforms(Properties optValues)
            throws Exception {

        // The template format controls which xsl stylesheet is to be applied
        // Valid values are METS_EXT1_1.uri and FOXML1_1.uri
        if (optValues.getProperty(BatchTool.OBJECTFORMAT)
                .equalsIgnoreCase(FOXML1_1.uri)) {
            xformPath = Constants.FEDORA_HOME + "/client/lib/foxml-merge.xsl";
            formatMap.put(BatchTool.OBJECTFORMAT, "FOXML");
        } else if (optValues.getProperty(BatchTool.OBJECTFORMAT)
                .equalsIgnoreCase(METS_EXT1_1.uri)) {
            xformPath = Constants.FEDORA_HOME + "/client/lib/mets-merge.xsl";
            formatMap.put(BatchTool.OBJECTFORMAT, "METS");
        } else {
            System.err.println("Unknown objectTemplate format: "
                    + optValues.getProperty(BatchTool.OBJECTFORMAT));
            throw new Exception();
        }
        additionsPath = optValues.getProperty(BatchTool.ADDITIONSPATH);
        objectsPath = optValues.getProperty(BatchTool.OBJECTSPATH);
        modelPath = optValues.getProperty(BatchTool.CMODEL);
        if (!BatchTool.argOK(additionsPath)) {
            System.err.println("additionsPath required");
            throw new Exception();
        }
        if (!BatchTool.argOK(objectsPath)) {
            System.err.println("objectsPath required");
            throw new Exception();
        }
        if (!BatchTool.argOK(xformPath)) {
            System.err.println("xformPath required");
            throw new Exception();
        }

    }

    private boolean good2go = false;

    final void prep() throws Exception {
        good2go = true;
    }

    private Vector keys = null;

    /* package */Vector getKeys() {
        return keys;
    }

    final void process() throws TransformerConfigurationException, Exception {
        TransformerFactory tfactory = XmlTransformUtility.getTransformerFactory();
        keys = new Vector();
        if (good2go) {
            File file4catch = null;
            int files4catch = 0;
            int badFileCount = 0;
            int succeededBuildCount = 0;
            int failedBuildCount = 0;
            try {
                File[] files = null;
                {
                    // System.err.println("additions path " + additionsPath);
                    File additionsDirectory = new File(additionsPath);
                    files = additionsDirectory.listFiles();
                }
                //int badFileCount = 0;
                files4catch = files.length;
                for (int i = 0; i < files.length; i++) {
                    //System.err.println("another it");
                    file4catch = files[i];
                    if (!files[i].isFile()) {
                        badFileCount++;
                        System.err
                                .println("additions directory contains unexpected directory or file: "
                                        + files[i].getName());
                    } else {
                        //System.err.println("before tfactory.newTransformer()"); //<<==

                        File f = new File(xformPath);
                        //System.err.println("File " + xformPath + " exists=[" + (f.exists()) + "]");

                        StreamSource ss = new StreamSource(f);
                        //System.err.println("ss null=[" + (ss == null) + "]");
                        /*
                         * Reader r = ss.getReader(); System.err.println("r
                         * null=[" + (r == null) + "]"); BufferedReader br = new
                         * BufferedReader(r); System.err.println("br null=[" +
                         * (br == null) + "]"); String st = br.readLine();
                         * System.err.println("st null=[" + (st == null) + "]");
                         * System.err.println("first line[" + st + "]");
                         * System.err.println("after dummy SS"); //<<==
                         * System.err.println("support?=[" +
                         * tfactory.getFeature(StreamSource.FEATURE) + "]"); //<<==
                         */

                        transformer = tfactory.newTransformer(ss); //xformPath

                        //System.err.println("after tfactory.newTransformer(); is transformer null? " + (transformer == null));

                        // As of Fedora 2.0, CREATEDATE attribute should be omitted and allow Fedora server to assign
                        // creation dates at time of object ingest.
                        /*
                         * GregorianCalendar calendar = new GregorianCalendar();
                         * String year =
                         * Integer.toString(calendar.get(Calendar.YEAR)); String
                         * month = leftPadded(1+
                         * calendar.get(Calendar.MONTH),2); String dayOfMonth =
                         * leftPadded(calendar.get(Calendar.DAY_OF_MONTH),2);
                         * String hourOfDay =
                         * leftPadded(calendar.get(Calendar.HOUR_OF_DAY),2);
                         * String minute =
                         * leftPadded(calendar.get(Calendar.MINUTE),2); String
                         * second = leftPadded(calendar.get(Calendar.SECOND),2);
                         * transformer.setParameter("date", year + "-" + month +
                         * "-" + dayOfMonth + "T" + hourOfDay + ":" + minute +
                         * ":" + second);
                         */
                        //"2002-05-20T06:32:00"
                        //System.err.println("about to xform " + count++);
                        //System.err.println(">>>>>>>>>>>>" + files[i].getPath());
                        //System.err.println("objectsPath [" + objectsPath + "]");
                        /*
                         * for (int bb=0; bb