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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 1997-2015 IDRsolutions and Contributors.
 *
 * This file is part of JPedal/JPDF2HTML5
 *
     This library is free software; you can redistribute it and/or
    modify it under the terms of the GNU Lesser General Public
    License as published by the Free Software Foundation; either
    version 2.1 of the License, or (at your option) any later version.

    This library is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
    Lesser General Public License for more details.

    You should have received a copy of the GNU Lesser General Public
    License along with this library; if not, write to the Free Software
    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA


 *
 * ---------------
 * FontFile2.java
 * ---------------
 */
package org.jpedal.fonts.tt;

import org.jpedal.fonts.objects.FontData;

import java.io.Serializable;
import java.util.ArrayList;

/**
 * @author markee
 *
 * To change the template for this generated type comment go to
 * Window - Preferences - Java - Code Generation - Code and Comments
 */
@SuppressWarnings("UnusedDeclaration")
public class FontFile2 implements Serializable{
    
    private static final long serialVersionUID = -3097990864237320960L;
    
    public static final int HEAD=0;
    public static final int MAXP =1;
    public static final int CMAP=2;
    public static final int LOCA=3;
    public static final int GLYF=4;
    public static final int HHEA=5;
    public static final int HMTX=6;
    public static final int NAME=7;
    public static final int POST=8;
    public static final int CVT=9;
    public static final int FPGM=10;
    public static final int HDMX=11;
    public static final int KERN=12;
    public static final int OS2=13;
    public static final int PREP=14;
    public static final int DSIG=15;
    
    public static final int CFF=16;
    public static final int GSUB=17;
    public static final int BASE=18;
    public static final int EBDT=19;
    public static final int EBLC=20;
    public static final int GASP=21;
    public static final int VHEA=22;
    public static final int VMTX=23;
    public static final int GDEF=24;
    public static final int JSTF=25;
    public static final int LTSH=26;
    public static final int PCLT=27;
    public static final int VDMX=28;
    public static final int BSLN=29;
    public static final int MORT=30;
    public static final int FDSC=31;
    public static final int FFTM=32;
    public static final int GPOS=33;
    public static final int FEAT=34;
    public static final int JUST=35;
    public static final int PROP=36;
    public static final int LCCL=37;
    public static final int Zapf=38;
    
    protected static final int tableCount=39;
    
    //location of tables
    protected int checksums[][];
    protected int tables[][];
    protected int tableLength[][];
    
    /**holds embedded font*/
    private FontData fontDataAsObject;
    
    private byte[] fontDataAsArray;
    
    private boolean useArray=true;
    
    protected ArrayList tableList=new ArrayList(32);
    
    /**current location in fontDataArray*/
    private int pointer;
    
    public static final int OPENTYPE = 1;
    public static final int TRUETYPE = 2;
    public static final int TTC = 3;
    
    /**subtypes used in conversion*/
    public static final int PS=10;
    public static final int TTF=11;
    protected int subType=PS;
    
    protected int type=TRUETYPE;
    
    //if several fonts, selects which font
    public int currentFontID;
    private int fontCount=1;
    
    //defaults are for OTF write
    protected int numTables=11,searchRange=128,entrySelector=3,rangeShift=48;
    
    public FontFile2(final FontData data){
        
        useArray=false;
        
        this.fontDataAsObject=data;
        
        readHeader();
    }
    
    public FontFile2(final byte[] data){
        
        useArray=true;
        
        this.fontDataAsArray=data;
        
        readHeader();
    }
    
    public FontFile2(final byte[] data, final boolean ignoreHeaders){
        
        useArray=true;
        
        this.fontDataAsArray=data;
        
        if(!ignoreHeaders) {
            readHeader();
        }
    }
    
    public FontFile2() {
    }
    
    
    /**
     * set selected font as a number in TTC
     * ie if 4 fonts, use 0,1,2,3
     * if less than fontCount. Otherwise does
     * nothing
     */
    public void setSelectedFontIndex(final int currentFontID) {
        
        if(currentFontID32768) {
            number -= 65536;
        }
        
        pointer += 2;
        
        if(useArray) {
            dec = ((fontDataAsArray[pointer] & 0xff) * 256) + (fontDataAsArray[pointer + 1] & 0xff);
        } else {
            dec = ((fontDataAsObject.getByte(pointer) & 0xff) * 256) + (fontDataAsObject.getByte(pointer + 1) & 0xff);
        }
        
        
        pointer += 2;
        
        return (number+(dec/65536f));
    }
    
    /**
     * get a pascal string
     */
    public String getString() {
        final int length;
        
        //catch bug in odd file
        if(useArray && pointer==fontDataAsArray.length) {
            return "";
        }
        
        if(useArray) {
            length = fontDataAsArray[pointer] & 255;
        } else {
            length = fontDataAsObject.getByte(pointer) & 255;
        }
        
        final char[] chars=new char[length];
        //StringBuilder value=new StringBuilder();
        //value.setLength(length);
        
        
        pointer++;
        
        for(int i=0;i=fontDataAsArray.length) {
                i = length;
            }
            
        }
        return String.copyValueOf(chars);
        //return value.toString();
    }
    
    /**
     * get a pascal string
     */
    public byte[] getStringBytes() {
        final int length;
        
        //catch bug in odd file
        if(useArray && pointer==fontDataAsArray.length) {
            return new byte[1];
        }
        
        if(useArray) {
            length = fontDataAsArray[pointer] & 255;
        } else {
            length = fontDataAsObject.getByte(pointer) & 255;
        }
        
        final byte[] value=new byte[length];
        
        pointer++;
        
        for(int i=0;i=fontDataAsArray.length) {
                i = length;
            }
            
        }
        return value;
    }
    
    public float getF2Dot14() {
        
        final int firstValue;
        
        if(useArray) {
            firstValue = ((fontDataAsArray[pointer] & 0xff) << 8) + (fontDataAsArray[pointer + 1] & 0xff);
        } else {
            firstValue = ((fontDataAsObject.getByte(pointer) & 0xff) << 8) + (fontDataAsObject.getByte(pointer + 1) & 0xff);
        }
        
        pointer += 2;
        
        if(firstValue==49152){
            return -1.0f;
        }else if(firstValue==16384){
            return 1.0f;
        }else{
            return (firstValue - (2 * (firstValue & 32768))) / 16384f;
        }
    }
    
    public byte[] readBytes(final int startPointer, final int length) {
        
        if(useArray){
            final byte[] block=new byte[length];
            System.arraycopy(fontDataAsArray,startPointer,block,0,length);
            return block;
        }else {
            return fontDataAsObject.getBytes(startPointer, length);
        }
        
    }
    
    public byte[] getTableBytes(final int tableID){
        
        final int startPointer=tables[tableID][currentFontID];
        int length= tableLength[tableID][currentFontID];
        
        if(useArray){
            if (fontDataAsArray.length - startPointer < length) {
                length = fontDataAsArray.length - startPointer;
            }
            
            final byte[] block=new byte[length];
            System.arraycopy(fontDataAsArray,startPointer,block,0,length);
            return block;
        }else {
            return fontDataAsObject.getBytes(startPointer, length);
        }
        
    }
    
    //number of fonts - 1 for Open/True, can be more for TTC
    public int getFontCount() {
        return fontCount;
    }
    
    /**
     * used to test if table too short so need to stop reading
     * @return
     */
    public boolean hasValuesLeft() {
        
        final int size;
        if(useArray) {
            size = fontDataAsArray.length;
        } else {
            size = fontDataAsObject.length();
        }
        
        return pointer




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