de.intarsys.pdf.font.CMapBFRangeCodeMap Maven / Gradle / Ivy

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/*
 * Copyright (c) 2007, intarsys consulting GmbH
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
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 * - Redistributions in binary form must reproduce the above copyright notice,
 *   this list of conditions and the following disclaimer in the documentation
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 *
 * - Neither the name of intarsys nor the names of its contributors may be used
 *   to endorse or promote products derived from this software without specific
 *   prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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package de.intarsys.pdf.font;

/**
 * A special map from a character code range to a character code range.
 * 
 */
public class CMapBFRangeCodeMap extends CMapRangeMap {

	final private int destination;

	public CMapBFRangeCodeMap(byte[] start, byte[] end, byte[] destination) {
		super(start, end);
		this.destination = CMap.toInt(destination);
	}

	@Override
	public char[] toChars(int codepoint) {
		if ((codepoint >= start) && (codepoint <= end)) {
			return new char[] { (char) (codepoint - start + destination) };
		} else {
			return null;
		}
	}

	@Override
	public int toCID(int codepoint) {
		if ((codepoint >= start) && (codepoint <= end)) {
			return codepoint - start + destination;
		} else {
			return 0;
		}
	}

	@Override
	public int toCodepoint(int cid) {
		if ((cid >= destination) && (cid <= destination + end - start)) {
			return start + cid - destination;
		} else {
			return 0;
		}
	}
}