de.intarsys.pdf.font.CMapRange 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:
 *
 * - Redistributions of source code must retain the above copyright notice,
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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
 *   and/or other materials provided with the distribution.
 *
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 *   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 codespace range for a CMap.
 * 
 * 
 * todo 1 cmap implement correct byte check
 * 
 */
public class CMapRange {
	/** The start index of the range */
	private final byte[] start;

	/** The end index of the range */
	private final byte[] end;

	/**
	 * 
	 */
	public CMapRange(byte[] start, byte[] end) {
		super();
		this.start = start;
		this.end = end;
	}

	public boolean checkPrefix(byte[] value, int count) {
		if (count <= start.length) {
			for (int i = 0; i < count; i++) {
				if (((value[i] & 0xff) < (start[i] & 0xff))
						|| ((value[i] & 0xff) > (end[i] & 0xff))) {
					return false;
				}
			}
			return true;
		} else {
			return false;
		}
	}

	public boolean checkRange(byte[] value, int count) {
		if (count == start.length) {
			for (int i = 0; i < count; i++) {
				if (((value[i] & 0xff) < (start[i] & 0xff))
						|| ((value[i] & 0xff) > (end[i] & 0xff))) {
					return false;
				}
			}
			return true;
		} else {
			return false;
		}
	}

	public int getByteCount() {
		return start.length;
	}

	public byte[] getEnd() {
		return end;
	}

	public byte[] getStart() {
		return start;
	}
}