PalmDB.java

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/*
 * This file is part of the LibreOffice project.
 *
 * This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/.
 *
 * This file incorporates work covered by the following license notice:
 *
 *   Licensed to the Apache Software Foundation (ASF) under one or more
 *   contributor license agreements. See the NOTICE file distributed
 *   with this work for additional information regarding copyright
 *   ownership. The ASF licenses this file to you under the Apache
 *   License, Version 2.0 (the "License"); you may not use this file
 *   except in compliance with the License. You may obtain a copy of
 *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
 */

package org.openoffice.xmerge.converter.palm;

import java.io.UnsupportedEncodingException;

public final class PalmDB {

    public static final int NAME_LENGTH = 32;

    private Record[] records;

    private byte[] bName = null;

    private String sName = null;

    private int creatorID = 0;

    private int typeID = 0;

    private int version = 0;

    private short attribute = 0;

    public PalmDB(int creatorID, int typeID, int version, short attribute) {
        records = new Record[0];
        setAttributes(creatorID, typeID, version, attribute);
    }

    public PalmDB(String name, int creatorID, int typeID, int version,
                  short attribute, Record[] recs)
            throws UnsupportedEncodingException {

        this(name.getBytes(PdbUtil.ENCODING), creatorID, typeID, version,
            attribute, recs);
    }

    public PalmDB(byte[] name, int creatorID, int typeID, int version,
                  short attribute, Record[] recs)
            throws UnsupportedEncodingException {

        store(name);

        records = new Record[recs.length];
        System.arraycopy(recs, 0, records, 0, recs.length);
        setAttributes(creatorID, typeID, version, attribute);
    }

    private void setAttributes (int creatorID, int typeID, int version,
                                short attribute) {
        this.creatorID = creatorID;
        this.typeID = typeID;
        this.version = version;
        this.attribute = attribute;
    }

    private void store(byte[] bytes) throws UnsupportedEncodingException {

        // note that this will initialize all bytes in name to 0.
        bName = new byte[NAME_LENGTH];

        // determine minimum length to copy over from bytes to bName.
        // Note that the last byte in bName has to be '\0'.

        int lastIndex = NAME_LENGTH - 1;
        int len = (bytes.length < lastIndex)? bytes.length: lastIndex;

        int i;
        for (i = 0; i < len; i++) {

            if (bytes[i] == 0) {
                break;
            }

            bName[i] = bytes[i];
        }

        // set sName, no need to include the '\0' character.
        sName = new String(bName, 0, i, PdbUtil.ENCODING);
    }

    public int getCreatorID() {
        return creatorID;
    }

    public int getTypeID() {
        return typeID;
    }

    public short getAttribute() {
        return attribute;
    }

    public int getVersion() {
        return version;
    }

    public int getRecordCount() {
        return records.length;
    }

    public Record getRecord(int index) {
        return records[index];
    }

    public Record[] getRecords() {
        return records;
    }

    public String getPDBNameString() {
        return sName;
    }

    public byte[] getPDBNameBytes() {
        return bName;
    }

    @Override
    public boolean equals(Object obj) {

        boolean bool = false;

        if (obj instanceof PalmDB) {

            PalmDB pdb = (PalmDB) obj;

            checkLabel: {

                // compare sName
                if (!sName.equals(pdb.sName)) {
                    break checkLabel;
                }

                // compare bName
                if (bName.length != pdb.bName.length) {
                    break checkLabel;
                }
                for (int i = 0; i < bName.length; i++) {
                    if (bName[i] != pdb.bName[i]) {
                        break checkLabel;
                    }
                }

                // compare each Record
                if (records.length != pdb.records.length) {
                    break checkLabel;
                }
                for (int i = 0; i < records.length; i++) {
                    if (!records[i].equals(pdb.records[i])) {
                        break checkLabel;
                    }
                }

                // all checks done
                bool = true;
            }
        }

        return bool;
    }

    @Override
    public int hashCode() {
        return 0;
    }

}