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/*
 * ===========================================
 * Java Pdf Extraction Decoding Access Library
 * ===========================================
 *
 * Project Info:  http://www.idrsolutions.com
 * Help section for developers at http://www.idrsolutions.com/support/
 *
 * (C) Copyright 1997-2017 IDRsolutions and Contributors.
 *
 * This file is part of JPedal/JPDF2HTML5
 *
 @LICENSE@
 *
 * ---------------
 * EncodingJOHAB.java
 * ---------------
 */
package org.jpedal.fonts;

import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.util.StringTokenizer;
import org.jpedal.utils.LogWriter;

/**
 *
 * @author suda
 */
public class EncodingJOHAB implements CmapEncoding {

    private final int[] uniMap = new int[65536];

    public EncodingJOHAB() {
        final ClassLoader loader = this.getClass().getClassLoader();
        String line;
        int gbkVal, unicodeVal;
        final BufferedReader input_stream;
        String xx, yy;

        try {
            input_stream = new BufferedReader(
                    new InputStreamReader(loader.getResourceAsStream("org/jpedal/res/pdf/JOHABtoUNI.cfg")));
            while (true) {
                line = input_stream.readLine();
                if (line == null) {
                    break;
                }
                if (line.startsWith("0x")) {
                    final StringTokenizer values = new StringTokenizer(line);
                    xx = values.nextToken().substring(2);
                    yy = values.nextToken().substring(2);

                    unicodeVal = Integer.parseInt(yy, 16);
                    gbkVal = Integer.parseInt(xx, 16);
                    uniMap[gbkVal] = unicodeVal;

                }
            }
            input_stream.close();
        } catch (final Exception e) {
            LogWriter.writeLog("Exception: " + e.getMessage());
        }
    }

    @Override
    public int getUnicodeValue(final int cid) {
        if (cid >= 0 && cid <= 0x7f) {
            return cid;
        }
        return uniMap[cid];
    }

}