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The Adobe Experience Manager SDK

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/*
 * File: CIDtoUnicode.java
 * 
 *	ADOBE CONFIDENTIAL
 *	___________________
 *
 *	Copyright 2004-2005 Adobe Systems Incorporated
 *	All Rights Reserved.
 *
 *	NOTICE: All information contained herein is, and remains the property of
 *	Adobe Systems Incorporated and its suppliers, if any. The intellectual
 *	and technical concepts contained herein are proprietary to Adobe Systems
 *	Incorporated and its suppliers and may be covered by U.S. and Foreign
 *	Patents, patents in process, and are protected by trade secret or
 *	copyright law. Dissemination of this information or reproduction of this
 *	material is strictly forbidden unless prior written permission is obtained
 *	from Adobe Systems Incorporated.
 *
 */
package com.adobe.fontengine.font.postscript;

import java.io.Serializable;
import java.io.IOException;
import java.io.InputStream;
import java.io.ObjectInputStream;
import java.util.MissingResourceException;

import com.adobe.fontengine.font.UnsupportedFontException;


final public class CIDtoUnicode implements Serializable {
  /* Serialization signature is explicitly set and should be 
   * incremented on each release to prevent compatibility.
   */
  static final long serialVersionUID = 1;

  String registry;
  String ordering;
  int [] map;
  
  public CIDtoUnicode (String registry, String ordering, int[] map) {
    this.registry = registry;
    this.ordering = ordering;
    this.map = new int [map.length];
    System.arraycopy (map, 0, this.map, 0, map.length);
  }
  
  public int cid2usv (int cid) {
    // It is possible that our map do not contain entries for all CIDs, e.g.
    // if a font is built for a later supplement than the supplement of
    // the CMap from which we started. Another case is Adobe-GB1-4:
    // the last 5 CIDs are rotated glyphs, and are not mapped by the
    // Unicode CMap
    if (cid >= map.length) {
      return -1; }
    else {
      return map [cid]; }
  }
  
  //------------------------------------------------------- deserialization ---
  static CIDtoUnicode get (String registry, String ordering)
      throws MissingResourceException, UnsupportedFontException {
    try {
      InputStream is = CIDtoUnicode.class.getResourceAsStream ("cid2usv_" + registry + "_" + ordering);
      
      if (is == null)
    	  throw new UnsupportedFontException("Cannot convert from " + registry + "-" + ordering + " to Unicode");
      
      ObjectInputStream ois = new ObjectInputStream (is);
      try {
        return (CIDtoUnicode) ois.readObject (); }
      finally {
        ois.close (); }}
    
    catch (IOException e) {
      MissingResourceException ee = new MissingResourceException ("", "", "");
      ee.initCause (e);
      throw ee; }

    catch (ClassNotFoundException e) {
      MissingResourceException ee = new MissingResourceException ("", "", "");
      ee.initCause (e);
      throw ee; }
  }
}