/*
 * $Id: BaseFont.java 3869 2009-04-17 18:03:45Z blowagie $
 *
 * Copyright 2000-2006 by Paulo Soares.
 *
 * The contents of this file are subject to the Mozilla Public License Version 1.1
 * (the "License"); you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at http://www.mozilla.org/MPL/
 *
 * Software distributed under the License is distributed on an "AS IS" basis,
 * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
 * for the specific language governing rights and limitations under the License.
 *
 * The Original Code is 'iText, a free JAVA-PDF library'.
 *
 * The Initial Developer of the Original Code is Bruno Lowagie. Portions created by
 * the Initial Developer are Copyright (C) 1999, 2000, 2001, 2002 by Bruno Lowagie.
 * All Rights Reserved.
 * Co-Developer of the code is Paulo Soares. Portions created by the Co-Developer
 * are Copyright (C) 2000, 2001, 2002 by Paulo Soares. All Rights Reserved.
 *
 * Contributor(s): all the names of the contributors are added in the source code
 * where applicable.
 *
 * Alternatively, the contents of this file may be used under the terms of the
 * LGPL license (the "GNU LIBRARY GENERAL PUBLIC LICENSE"), in which case the
 * provisions of LGPL are applicable instead of those above.  If you wish to
 * allow use of your version of this file only under the terms of the LGPL
 * License and not to allow others to use your version of this file under
 * the MPL, indicate your decision by deleting the provisions above and
 * replace them with the notice and other provisions required by the LGPL.
 * If you do not delete the provisions above, a recipient may use your version
 * of this file under either the MPL or the GNU LIBRARY GENERAL PUBLIC LICENSE.
 *
 * This library is free software; you can redistribute it and/or modify it
 * under the terms of the MPL as stated above or under the terms of the GNU
 * Library General Public License as published by the Free Software Foundation;
 * either version 2 of the License, or 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 Library general Public License for more
 * details.
 *
 * If you didn't download this code from the following link, you should check if
 * you aren't using an obsolete version:
 * http://www.lowagie.com/iText/
 */

package com.lowagie.text.pdf;

import com.lowagie.text.DocumentException;

import java.io.IOException;
import java.io.InputStream;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.Iterator;
import java.util.StringTokenizer;

/**
 * Base class for the several font types supported
 *
 * @author Paulo Soares ([email protected])
 */

@SuppressWarnings("unchecked")
public abstract class BaseFont {

    /** This is a possible value of a base 14 type 1 font */
    public static final String     COURIER                 = "Courier";

    /** This is a possible value of a base 14 type 1 font */
    public static final String     COURIER_BOLD            = "Courier-Bold";

    /** This is a possible value of a base 14 type 1 font */
    public static final String     COURIER_OBLIQUE         = "Courier-Oblique";

    /** This is a possible value of a base 14 type 1 font */
    public static final String     COURIER_BOLDOBLIQUE     = "Courier-BoldOblique";

    /** This is a possible value of a base 14 type 1 font */
    public static final String     HELVETICA               = "Helvetica";

    /** This is a possible value of a base 14 type 1 font */
    public static final String     HELVETICA_BOLD          = "Helvetica-Bold";

    /** This is a possible value of a base 14 type 1 font */
    public static final String     HELVETICA_OBLIQUE       = "Helvetica-Oblique";

    /** This is a possible value of a base 14 type 1 font */
    public static final String     HELVETICA_BOLDOBLIQUE   = "Helvetica-BoldOblique";

    /** This is a possible value of a base 14 type 1 font */
    public static final String     SYMBOL                  = "Symbol";

    /** This is a possible value of a base 14 type 1 font */
    public static final String     TIMES_ROMAN             = "Times-Roman";

    /** This is a possible value of a base 14 type 1 font */
    public static final String     TIMES_BOLD              = "Times-Bold";

    /** This is a possible value of a base 14 type 1 font */
    public static final String     TIMES_ITALIC            = "Times-Italic";

    /** This is a possible value of a base 14 type 1 font */
    public static final String     TIMES_BOLDITALIC        = "Times-BoldItalic";

    /** This is a possible value of a base 14 type 1 font */
    public static final String     ZAPFDINGBATS            = "ZapfDingbats";

    /**
     * The maximum height above the baseline reached by glyphs in this font, excluding the height of
     * glyphs for accented characters.
     */
    public static final int        ASCENT                  = 1;
    /**
     * The y coordinate of the top of flat capital letters, measured from the baseline.
     */
    public static final int        CAPHEIGHT               = 2;
    /**
     * The maximum depth below the baseline reached by glyphs in this font. The value is a negative
     * number.
     */
    public static final int        DESCENT                 = 3;
    /**
     * The angle, expressed in degrees counterclockwise from the vertical, of the dominant vertical
     * strokes of the font. The value is negative for fonts that slope to the right, as almost all
     * italic fonts do.
     */
    public static final int        ITALICANGLE             = 4;
    /**
     * The lower left x glyph coordinate.
     */
    public static final int        BBOXLLX                 = 5;
    /**
     * The lower left y glyph coordinate.
     */
    public static final int        BBOXLLY                 = 6;
    /**
     * The upper right x glyph coordinate.
     */
    public static final int        BBOXURX                 = 7;
    /**
     * The upper right y glyph coordinate.
     */
    public static final int        BBOXURY                 = 8;

    /** java.awt.Font property */
    public static final int        AWT_ASCENT              = 9;
    /** java.awt.Font property */
    public static final int        AWT_DESCENT             = 10;
    /** java.awt.Font property */
    public static final int        AWT_LEADING             = 11;
    /** java.awt.Font property */
    public static final int        AWT_MAXADVANCE          = 12;
    /**
     * The underline position. Usually a negative value.
     */
    public static final int        UNDERLINE_POSITION      = 13;
    /**
     * The underline thickness.
     */
    public static final int        UNDERLINE_THICKNESS     = 14;
    /**
     * The strikethrough position.
     */
    public static final int        STRIKETHROUGH_POSITION  = 15;
    /**
     * The strikethrough thickness.
     */
    public static final int        STRIKETHROUGH_THICKNESS = 16;
    /**
     * The recommended vertical size for subscripts for this font.
     */
    public static final int        SUBSCRIPT_SIZE          = 17;
    /**
     * The recommended vertical offset from the baseline for subscripts for this font. Usually a
     * negative value.
     */
    public static final int        SUBSCRIPT_OFFSET        = 18;
    /**
     * The recommended vertical size for superscripts for this font.
     */
    public static final int        SUPERSCRIPT_SIZE        = 19;
    /**
     * The recommended vertical offset from the baseline for superscripts for this font.
     */
    public static final int        SUPERSCRIPT_OFFSET      = 20;
    /**
     * The font is Type 1.
     */
    public static final int        FONT_TYPE_T1            = 0;
    /**
     * The font is True Type with a standard encoding.
     */
    public static final int        FONT_TYPE_TT            = 1;
    /**
     * The font is CJK.
     */
    public static final int        FONT_TYPE_CJK           = 2;
    /**
     * The font is True Type with a Unicode encoding.
     */
    public static final int        FONT_TYPE_TTUNI         = 3;
    /**
     * A font already inside the document.
     */
    public static final int        FONT_TYPE_DOCUMENT      = 4;
    /**
     * A Type3 font.
     */
    public static final int        FONT_TYPE_T3            = 5;
    /**
     * The Unicode encoding with horizontal writing.
     */
    public static final String     IDENTITY_H              = "Identity-H";
    /**
     * The Unicode encoding with vertical writing.
     */
    public static final String     IDENTITY_V              = "Identity-V";

    /** A possible encoding. */
    public static final String     CP1250                  = "Cp1250";

    /** A possible encoding. */
    public static final String     CP1252                  = "Cp1252";

    /** A possible encoding. */
    public static final String     CP1257                  = "Cp1257";

    /** A possible encoding. */
    public static final String     WINANSI                 = "Cp1252";

    /** A possible encoding. */
    public static final String     MACROMAN                = "MacRoman";

    public static final int[]      CHAR_RANGE_LATIN        = { 0, 0x17f, 0x2000, 0x206f, 0x20a0, 0x20cf, 0xfb00, 0xfb06 };
    public static final int[]      CHAR_RANGE_ARABIC       = { 0, 0x7f, 0x0600, 0x067f, 0x20a0, 0x20cf, 0xfb50, 0xfbff, 0xfe70, 0xfeff };
    public static final int[]      CHAR_RANGE_HEBREW       = { 0, 0x7f, 0x0590, 0x05ff, 0x20a0, 0x20cf, 0xfb1d, 0xfb4f };
    public static final int[]      CHAR_RANGE_CYRILLIC     = { 0, 0x7f, 0x0400, 0x052f, 0x2000, 0x206f, 0x20a0, 0x20cf };

    /** if the font has to be embedded */
    public static final boolean    EMBEDDED                = true;

    /** if the font doesn't have to be embedded */
    public static final boolean    NOT_EMBEDDED            = false;
    /** if the font has to be cached */
    public static final boolean    CACHED                  = true;
    /** if the font doesn't have to be cached */
    public static final boolean    NOT_CACHED              = false;

    /** The path to the font resources. */
    public static final String     RESOURCE_PATH           = "com/lowagie/text/pdf/fonts/";
    /** The fake CID code that represents a newline. */
    public static final char       CID_NEWLINE             = '\u7fff';

    protected ArrayList            subsetRanges;
    /**
     * The font type.
     */
    int                            fontType;
    /** a not defined character in a custom PDF encoding */
    public static final String     notdef                  = ".notdef";

    /** table of characters widths for this encoding */
    protected int                  widths[]                = new int[256];

    /** encoding names */
    protected String               differences[]           = new String[256];
    /** same as differences but with the unicode codes */
    protected char                 unicodeDifferences[]    = new char[256];

    protected int                  charBBoxes[][]          = new int[256][];
    /** encoding used with this font */
    protected String               encoding;

    /** true if the font is to be embedded in the PDF */
    protected boolean              embedded;

    /**
     * The compression level for the font stream.
     *
     * @since 2.1.3
     */
    protected int                  compressionLevel        = PdfStream.DEFAULT_COMPRESSION;

    /**
     * true if the font must use its built in encoding. In that case the <CODE>encoding</CODE> is
     * only used to map a char to the position inside the font, not to the expected char name.
     */
    protected boolean              fontSpecific            = true;

    /** cache for the fonts already used. */
    protected static HashMap       fontCache               = new HashMap();

    /** list of the 14 built in fonts. */
    protected static final HashMap BuiltinFonts14          = new HashMap();

    /**
     * Forces the output of the width array. Only matters for the 14 built-in fonts.
     */
    protected boolean              forceWidthsOutput       = false;

    /**
     * Converts <CODE>char</CODE> directly to <CODE>byte</CODE> by casting.
     */
    protected boolean              directTextToByte        = false;

    /**
     * Indicates if all the glyphs and widths for that particular encoding should be included in the
     * document.
     */
    protected boolean              subset                  = true;

    protected boolean              fastWinansi             = false;

    /**
     * Custom encodings use this map to key the Unicode character to the single byte code.
     */
    protected IntHashtable         specialMap;

    static {
        BuiltinFonts14.put(COURIER, PdfName.COURIER);
        BuiltinFonts14.put(COURIER_BOLD, PdfName.COURIER_BOLD);
        BuiltinFonts14.put(COURIER_BOLDOBLIQUE, PdfName.COURIER_BOLDOBLIQUE);
        BuiltinFonts14.put(COURIER_OBLIQUE, PdfName.COURIER_OBLIQUE);
        BuiltinFonts14.put(HELVETICA, PdfName.HELVETICA);
        BuiltinFonts14.put(HELVETICA_BOLD, PdfName.HELVETICA_BOLD);
        BuiltinFonts14.put(HELVETICA_BOLDOBLIQUE, PdfName.HELVETICA_BOLDOBLIQUE);
        BuiltinFonts14.put(HELVETICA_OBLIQUE, PdfName.HELVETICA_OBLIQUE);
        BuiltinFonts14.put(SYMBOL, PdfName.SYMBOL);
        BuiltinFonts14.put(TIMES_ROMAN, PdfName.TIMES_ROMAN);
        BuiltinFonts14.put(TIMES_BOLD, PdfName.TIMES_BOLD);
        BuiltinFonts14.put(TIMES_BOLDITALIC, PdfName.TIMES_BOLDITALIC);
        BuiltinFonts14.put(TIMES_ITALIC, PdfName.TIMES_ITALIC);
        BuiltinFonts14.put(ZAPFDINGBATS, PdfName.ZAPFDINGBATS);
    }

    /**
     * Generates the PDF stream with the Type1 and Truetype fonts returning a PdfStream.
     */
    static class StreamFont extends PdfStream {

        /**
         * Generates the PDF stream with the Type1 and Truetype fonts returning a PdfStream.
         *
         * @param contents the content of the stream
         * @param lengths an array of int that describes the several lengths of each part of the
         *            font
         * @param compressionLevel the compression level of the Stream
         * @throws DocumentException error in the stream compression
         * @since 2.1.3 (replaces the constructor without param compressionLevel)
         */
        public StreamFont(byte contents[], int lengths[], int compressionLevel) throws DocumentException {
            try {
                bytes = contents;
                put(PdfName.LENGTH, new PdfNumber(bytes.length));
                for (int k = 0; k < lengths.length; ++k) {
                    put(new PdfName("Length" + (k + 1)), new PdfNumber(lengths[k]));
                }
                flateCompress(compressionLevel);
            } catch (Exception e) {
                throw new DocumentException(e);
            }
        }

        /**
         * Generates the PDF stream for a font.
         *
         * @param contents the content of a stream
         * @param subType the subtype of the font.
         * @param compressionLevel the compression level of the Stream
         * @throws DocumentException error in the stream compression
         * @since 2.1.3 (replaces the constructor without param compressionLevel)
         */
        public StreamFont(byte contents[], String subType, int compressionLevel) throws DocumentException {
            try {
                bytes = contents;
                put(PdfName.LENGTH, new PdfNumber(bytes.length));
                if (subType != null) {
                    put(PdfName.SUBTYPE, new PdfName(subType));
                }
                flateCompress(compressionLevel);
            } catch (Exception e) {
                throw new DocumentException(e);
            }
        }
    }

    /**
     * Creates new BaseFont
     */
    protected BaseFont() {
    }

    /**
     * Creates a new font. This will always be the default Helvetica font (not embedded). This
     * method is introduced because Helvetica is used in many examples.
     *
     * @return a BaseFont object (Helvetica, Winansi, not embedded)
     * @throws IOException This shouldn't occur ever
     * @throws DocumentException This shouldn't occur ever
     * @since 2.1.1
     */
    public static BaseFont createFont() throws DocumentException, IOException {
        return createFont(BaseFont.HELVETICA, BaseFont.WINANSI, BaseFont.NOT_EMBEDDED);
    }

    /**
     * Creates a new font. This font can be one of the 14 built in types, a Type1 font referred to
     * by an AFM or PFM file, a TrueType font (simple or collection) or a CJK font from the Adobe
     * Asian Font Pack. TrueType fonts and CJK fonts can have an optional style modifier appended to
     * the name. These modifiers are: Bold, Italic and BoldItalic. An example would be
     * "STSong-Light,Bold". Note that this modifiers do not work if the font is embedded. Fonts in
     * TrueType collections are addressed by index such as "msgothic.ttc,1". This would get the
     * second font (indexes start at 0), in this case "MS PGothic".
     * <P>
     * The fonts are cached and if they already exist they are extracted from the cache, not parsed
     * again.
     * <P>
     * Besides the common encodings described by name, custom encodings can also be made. These
     * encodings will only work for the single byte fonts Type1 and TrueType. The encoding string
     * starts with a '#' followed by "simple" or "full". If "simple" there is a decimal for the
     * first character position and then a list of hex values representing the Unicode codes that
     * compose that encoding.<br>
     * The "simple" encoding is recommended for TrueType fonts as the "full" encoding risks not
     * matching the character with the right glyph if not done with care.<br>
     * The "full" encoding is specially aimed at Type1 fonts where the glyphs have to be described
     * by non standard names like the Tex math fonts. Each group of three elements compose a code
     * position: the one byte code order in decimal or as 'x' (x cannot be the space), the name and
     * the Unicode character used to access the glyph. The space must be assigned to character
     * position 32 otherwise text justification will not work.
     * <P>
     * Example for a "simple" encoding that includes the Unicode character space, A, B and
     * ecyrillic:
     *
     * <PRE>
     * "# simple 32 0020 0041 0042 0454"
     * </PRE>
     * <P>
     * Example for a "full" encoding for a Type1 Tex font:
     *
     * <PRE>
     * "# full 'A' nottriangeqlleft 0041 'B' dividemultiply 0042 32 space 0020"
     * </PRE>
     * <P>
     * This method calls:<br>
     *
     * <PRE>
     * createFont(name, encoding, embedded, true, null, null);
     * </PRE>
     *
     * @param name the name of the font or its location on file
     * @param encoding the encoding to be applied to this font
     * @param embedded true if the font is to be embedded in the PDF
     * @return returns a new font. This font may come from the cache
     * @throws DocumentException the font is invalid
     * @throws IOException the font file could not be read
     */
    public static BaseFont createFont(String name, String encoding, boolean embedded) throws DocumentException, IOException {
        return createFont(name, encoding, embedded, true, null, null, false);
    }

    /**
     * Creates a new font. This font can be one of the 14 built in types, a Type1 font referred to
     * by an AFM or PFM file, a TrueType font (simple or collection) or a CJK font from the Adobe
     * Asian Font Pack. TrueType fonts and CJK fonts can have an optional style modifier appended to
     * the name. These modifiers are: Bold, Italic and BoldItalic. An example would be
     * "STSong-Light,Bold". Note that this modifiers do not work if the font is embedded. Fonts in
     * TrueType collections are addressed by index such as "msgothic.ttc,1". This would get the
     * second font (indexes start at 0), in this case "MS PGothic".
     * <P>
     * The fonts are cached and if they already exist they are extracted from the cache, not parsed
     * again.
     * <P>
     * Besides the common encodings described by name, custom encodings can also be made. These
     * encodings will only work for the single byte fonts Type1 and TrueType. The encoding string
     * starts with a '#' followed by "simple" or "full". If "simple" there is a decimal for the
     * first character position and then a list of hex values representing the Unicode codes that
     * compose that encoding.<br>
     * The "simple" encoding is recommended for TrueType fonts as the "full" encoding risks not
     * matching the character with the right glyph if not done with care.<br>
     * The "full" encoding is specially aimed at Type1 fonts where the glyphs have to be described
     * by non standard names like the Tex math fonts. Each group of three elements compose a code
     * position: the one byte code order in decimal or as 'x' (x cannot be the space), the name and
     * the Unicode character used to access the glyph. The space must be assigned to character
     * position 32 otherwise text justification will not work.
     * <P>
     * Example for a "simple" encoding that includes the Unicode character space, A, B and
     * ecyrillic:
     *
     * <PRE>
     * "# simple 32 0020 0041 0042 0454"
     * </PRE>
     * <P>
     * Example for a "full" encoding for a Type1 Tex font:
     *
     * <PRE>
     * "# full 'A' nottriangeqlleft 0041 'B' dividemultiply 0042 32 space 0020"
     * </PRE>
     * <P>
     * This method calls:<br>
     *
     * <PRE>
     * createFont(name, encoding, embedded, true, null, null);
     * </PRE>
     *
     * @param name the name of the font or its location on file
     * @param encoding the encoding to be applied to this font
     * @param embedded true if the font is to be embedded in the PDF
     * @param forceRead in some cases (TrueTypeFont, Type1Font), the full font file will be read and
     *            kept in memory if forceRead is true
     * @return returns a new font. This font may come from the cache
     * @throws DocumentException the font is invalid
     * @throws IOException the font file could not be read
     * @since 2.1.5
     */
    public static BaseFont createFont(String name, String encoding, boolean embedded, boolean forceRead) throws DocumentException, IOException {
        return createFont(name, encoding, embedded, true, null, null, forceRead);
    }

    /**
     * Creates a new font. This font can be one of the 14 built in types, a Type1 font referred to
     * by an AFM or PFM file, a TrueType font (simple or collection) or a CJK font from the Adobe
     * Asian Font Pack. TrueType fonts and CJK fonts can have an optional style modifier appended to
     * the name. These modifiers are: Bold, Italic and BoldItalic. An example would be
     * "STSong-Light,Bold". Note that this modifiers do not work if the font is embedded. Fonts in
     * TrueType collections are addressed by index such as "msgothic.ttc,1". This would get the
     * second font (indexes start at 0), in this case "MS PGothic".
     * <P>
     * The fonts may or may not be cached depending on the flag <CODE>cached</CODE>. If the
     * <CODE>byte</CODE> arrays are present the font will be read from them instead of the name. A
     * name is still required to identify the font type.
     * <P>
     * Besides the common encodings described by name, custom encodings can also be made. These
     * encodings will only work for the single byte fonts Type1 and TrueType. The encoding string
     * starts with a '#' followed by "simple" or "full". If "simple" there is a decimal for the
     * first character position and then a list of hex values representing the Unicode codes that
     * compose that encoding.<br>
     * The "simple" encoding is recommended for TrueType fonts as the "full" encoding risks not
     * matching the character with the right glyph if not done with care.<br>
     * The "full" encoding is specially aimed at Type1 fonts where the glyphs have to be described
     * by non standard names like the Tex math fonts. Each group of three elements compose a code
     * position: the one byte code order in decimal or as 'x' (x cannot be the space), the name and
     * the Unicode character used to access the glyph. The space must be assigned to character
     * position 32 otherwise text justification will not work.
     * <P>
     * Example for a "simple" encoding that includes the Unicode character space, A, B and
     * ecyrillic:
     *
     * <PRE>
     * "# simple 32 0020 0041 0042 0454"
     * </PRE>
     * <P>
     * Example for a "full" encoding for a Type1 Tex font:
     *
     * <PRE>
     * "# full 'A' nottriangeqlleft 0041 'B' dividemultiply 0042 32 space 0020"
     * </PRE>
     *
     * @param name the name of the font or its location on file
     * @param encoding the encoding to be applied to this font
     * @param embedded true if the font is to be embedded in the PDF
     * @param cached true if the font comes from the cache or is added to the cache if new, false if
     *            the font is always created new
     * @param ttfAfm the true type font or the afm in a byte array
     * @param pfb the pfb in a byte array
     * @return returns a new font. This font may come from the cache but only if cached is true,
     *         otherwise it will always be created new
     * @throws DocumentException the font is invalid
     * @throws IOException the font file could not be read
     * @since iText 0.80
     */
    public static BaseFont createFont(String name, String encoding, boolean embedded, boolean cached, byte ttfAfm[], byte pfb[]) throws DocumentException, IOException {
        return createFont(name, encoding, embedded, cached, ttfAfm, pfb, false);
    }

    /**
     * Creates a new font. This font can be one of the 14 built in types, a Type1 font referred to
     * by an AFM or PFM file, a TrueType font (simple or collection) or a CJK font from the Adobe
     * Asian Font Pack. TrueType fonts and CJK fonts can have an optional style modifier appended to
     * the name. These modifiers are: Bold, Italic and BoldItalic. An example would be
     * "STSong-Light,Bold". Note that this modifiers do not work if the font is embedded. Fonts in
     * TrueType collections are addressed by index such as "msgothic.ttc,1". This would get the
     * second font (indexes start at 0), in this case "MS PGothic".
     * <P>
     * The fonts may or may not be cached depending on the flag <CODE>cached</CODE>. If the
     * <CODE>byte</CODE> arrays are present the font will be read from them instead of the name. A
     * name is still required to identify the font type.
     * <P>
     * Besides the common encodings described by name, custom encodings can also be made. These
     * encodings will only work for the single byte fonts Type1 and TrueType. The encoding string
     * starts with a '#' followed by "simple" or "full". If "simple" there is a decimal for the
     * first character position and then a list of hex values representing the Unicode codes that
     * compose that encoding.<br>
     * The "simple" encoding is recommended for TrueType fonts as the "full" encoding risks not
     * matching the character with the right glyph if not done with care.<br>
     * The "full" encoding is specially aimed at Type1 fonts where the glyphs have to be described
     * by non standard names like the Tex math fonts. Each group of three elements compose a code
     * position: the one byte code order in decimal or as 'x' (x cannot be the space), the name and
     * the Unicode character used to access the glyph. The space must be assigned to character
     * position 32 otherwise text justification will not work.
     * <P>
     * Example for a "simple" encoding that includes the Unicode character space, A, B and
     * ecyrillic:
     *
     * <PRE>
     * "# simple 32 0020 0041 0042 0454"
     * </PRE>
     * <P>
     * Example for a "full" encoding for a Type1 Tex font:
     *
     * <PRE>
     * "# full 'A' nottriangeqlleft 0041 'B' dividemultiply 0042 32 space 0020"
     * </PRE>
     *
     * @param name the name of the font or its location on file
     * @param encoding the encoding to be applied to this font
     * @param embedded true if the font is to be embedded in the PDF
     * @param cached true if the font comes from the cache or is added to the cache if new, false if
     *            the font is always created new
     * @param ttfAfm the true type font or the afm in a byte array
     * @param pfb the pfb in a byte array
     * @param noThrow if true will not throw an exception if the font is not recognized and will
     *            return null, if false will throw an exception if the font is not recognized. Note
     *            that even if true an exception may be thrown in some circumstances. This parameter
     *            is useful for FontFactory that may have to check many invalid font names before
     *            finding the right one
     * @return returns a new font. This font may come from the cache but only if cached is true,
     *         otherwise it will always be created new
     * @throws DocumentException the font is invalid
     * @throws IOException the font file could not be read
     * @since 2.0.3
     */
    public static BaseFont createFont(String name, String encoding, boolean embedded, boolean cached, byte ttfAfm[], byte pfb[], boolean noThrow) throws DocumentException, IOException {
        return createFont(name, encoding, embedded, cached, ttfAfm, pfb, false, false);
    }

    /**
     * Creates a new font. This font can be one of the 14 built in types, a Type1 font referred to
     * by an AFM or PFM file, a TrueType font (simple or collection) or a CJK font from the Adobe
     * Asian Font Pack. TrueType fonts and CJK fonts can have an optional style modifier appended to
     * the name. These modifiers are: Bold, Italic and BoldItalic. An example would be
     * "STSong-Light,Bold". Note that this modifiers do not work if the font is embedded. Fonts in
     * TrueType collections are addressed by index such as "msgothic.ttc,1". This would get the
     * second font (indexes start at 0), in this case "MS PGothic".
     * <P>
     * The fonts may or may not be cached depending on the flag <CODE>cached</CODE>. If the
     * <CODE>byte</CODE> arrays are present the font will be read from them instead of the name. A
     * name is still required to identify the font type.
     * <P>
     * Besides the common encodings described by name, custom encodings can also be made. These
     * encodings will only work for the single byte fonts Type1 and TrueType. The encoding string
     * starts with a '#' followed by "simple" or "full". If "simple" there is a decimal for the
     * first character position and then a list of hex values representing the Unicode codes that
     * compose that encoding.<br>
     * The "simple" encoding is recommended for TrueType fonts as the "full" encoding risks not
     * matching the character with the right glyph if not done with care.<br>
     * The "full" encoding is specially aimed at Type1 fonts where the glyphs have to be described
     * by non standard names like the Tex math fonts. Each group of three elements compose a code
     * position: the one byte code order in decimal or as 'x' (x cannot be the space), the name and
     * the Unicode character used to access the glyph. The space must be assigned to character
     * position 32 otherwise text justification will not work.
     * <P>
     * Example for a "simple" encoding that includes the Unicode character space, A, B and
     * ecyrillic:
     *
     * <PRE>
     * "# simple 32 0020 0041 0042 0454"
     * </PRE>
     * <P>
     * Example for a "full" encoding for a Type1 Tex font:
     *
     * <PRE>
     * "# full 'A' nottriangeqlleft 0041 'B' dividemultiply 0042 32 space 0020"
     * </PRE>
     *
     * @param name the name of the font or its location on file
     * @param encoding the encoding to be applied to this font
     * @param embedded true if the font is to be embedded in the PDF
     * @param cached true if the font comes from the cache or is added to the cache if new, false if
     *            the font is always created new
     * @param ttfAfm the true type font or the afm in a byte array
     * @param pfb the pfb in a byte array
     * @param noThrow if true will not throw an exception if the font is not recognized and will
     *            return null, if false will throw an exception if the font is not recognized. Note
     *            that even if true an exception may be thrown in some circumstances. This parameter
     *            is useful for FontFactory that may have to check many invalid font names before
     *            finding the right one
     * @param forceRead in some cases (TrueTypeFont, Type1Font), the full font file will be read and
     *            kept in memory if forceRead is true
     * @return returns a new font. This font may come from the cache but only if cached is true,
     *         otherwise it will always be created new
     * @throws DocumentException the font is invalid
     * @throws IOException the font file could not be read
     * @since 2.1.5
     */
    public static BaseFont createFont(String name, String encoding, boolean embedded, boolean cached, byte ttfAfm[], byte pfb[], boolean noThrow, boolean forceRead) throws DocumentException, IOException {
        String nameBase = getBaseName(name);
        encoding = normalizeEncoding(encoding);
        boolean isBuiltinFonts14 = BuiltinFonts14.containsKey(name);
        boolean isCJKFont = isBuiltinFonts14 ? false : CJKFont.isCJKFont(nameBase, encoding);
        if (isBuiltinFonts14 || isCJKFont) {
            embedded = false;
        } else if (encoding.equals(IDENTITY_H) || encoding.equals(IDENTITY_V)) {
            embedded = true;
        }
        BaseFont fontFound = null;
        BaseFont fontBuilt = null;
        String key = name + "\n" + encoding + "\n" + embedded;
        if (cached) {
            synchronized (fontCache) {
                fontFound = (BaseFont) fontCache.get(key);
            }
            if (fontFound != null) {
                return fontFound;
            }
        }
        if (isBuiltinFonts14 || name.toLowerCase().endsWith(".afm") || name.toLowerCase().endsWith(".pfm")) {
            fontBuilt = new Type1Font(name, encoding, embedded, ttfAfm, pfb, forceRead);
            fontBuilt.fastWinansi = encoding.equals(CP1252);
        } else if (nameBase.toLowerCase().endsWith(".ttf") || nameBase.toLowerCase().endsWith(".otf") || nameBase.toLowerCase().indexOf(".ttc,") > 0) {
            if (encoding.equals(IDENTITY_H) || encoding.equals(IDENTITY_V)) {
                fontBuilt = new TrueTypeFontUnicode(name, encoding, embedded, ttfAfm, forceRead);
            } else {
                fontBuilt = new TrueTypeFont(name, encoding, embedded, ttfAfm, false, forceRead);
                fontBuilt.fastWinansi = encoding.equals(CP1252);
            }
        } else if (isCJKFont) {
            fontBuilt = new CJKFont(name, encoding, embedded);
        } else if (noThrow) {
            return null;
        } else {
            throw new DocumentException("Font '" + name + "' with '" + encoding + "' is not recognized.");
        }
        if (cached) {
            synchronized (fontCache) {
                fontFound = (BaseFont) fontCache.get(key);
                if (fontFound != null) {
                    return fontFound;
                }
                fontCache.put(key, fontBuilt);
            }
        }
        return fontBuilt;
    }

    /**
     * Creates a font based on an existing document font. The created font font may not behave as
     * expected, depending on the encoding or subset.
     *
     * @param fontRef the reference to the document font
     * @return the font
     */
    public static BaseFont createFont(PRIndirectReference fontRef) {
        return new DocumentFont(fontRef);
    }

    /**
     * Gets the name without the modifiers Bold, Italic or BoldItalic.
     *
     * @param name the full name of the font
     * @return the name without the modifiers Bold, Italic or BoldItalic
     */
    protected static String getBaseName(String name) {
        if (name.endsWith(",Bold")) {
            return name.substring(0, name.length() - 5);
        } else if (name.endsWith(",Italic")) {
            return name.substring(0, name.length() - 7);
        } else if (name.endsWith(",BoldItalic")) {
            return name.substring(0, name.length() - 11);
        } else {
            return name;
        }
    }

    /**
     * Normalize the encoding names. "winansi" is changed to "Cp1252" and "macroman" is changed to
     * "MacRoman".
     *
     * @param enc the encoding to be normalized
     * @return the normalized encoding
     */
    protected static String normalizeEncoding(String enc) {
        if (enc.equals("winansi") || enc.equals("")) {
            return CP1252;
        } else if (enc.equals("macroman")) {
            return MACROMAN;
        } else {
            return enc;
        }
    }

    /**
     * Creates the <CODE>widths</CODE> and the <CODE>differences</CODE> arrays
     */
    protected void createEncoding() {
        if (encoding.startsWith("#")) {
            specialMap = new IntHashtable();
            StringTokenizer tok = new StringTokenizer(encoding.substring(1), " ,\t\n\r\f");
            if (tok.nextToken().equals("full")) {
                while (tok.hasMoreTokens()) {
                    String order = tok.nextToken();
                    String name = tok.nextToken();
                    char uni = (char) Integer.parseInt(tok.nextToken(), 16);
                    int orderK;
                    if (order.startsWith("'")) {
                        orderK = order.charAt(1);
                    } else {
                        orderK = Integer.parseInt(order);
                    }
                    orderK %= 256;
                    specialMap.put(uni, orderK);
                    differences[orderK] = name;
                    unicodeDifferences[orderK] = uni;
                    widths[orderK] = getRawWidth(uni, name);
                    charBBoxes[orderK] = getRawCharBBox(uni, name);
                }
            } else {
                int k = 0;
                if (tok.hasMoreTokens()) {
                    k = Integer.parseInt(tok.nextToken());
                }
                while (tok.hasMoreTokens() && k < 256) {
                    String hex = tok.nextToken();
                    int uni = Integer.parseInt(hex, 16) % 0x10000;
                    String name = GlyphList.unicodeToName(uni);
                    if (name != null) {
                        specialMap.put(uni, k);
                        differences[k] = name;
                        unicodeDifferences[k] = (char) uni;
                        widths[k] = getRawWidth(uni, name);
                        charBBoxes[k] = getRawCharBBox(uni, name);
                        ++k;
                    }
                }
            }
            for (int k = 0; k < 256; ++k) {
                if (differences[k] == null) {
                    differences[k] = notdef;
                }
            }
        } else if (fontSpecific) {
            for (int k = 0; k < 256; ++k) {
                widths[k] = getRawWidth(k, null);
                charBBoxes[k] = getRawCharBBox(k, null);
            }
        } else {
            String s;
            String name;
            char c;
            byte b[] = new byte[1];
            for (int k = 0; k < 256; ++k) {
                b[0] = (byte) k;
                s = PdfEncodings.convertToString(b, encoding);
                if (s.length() > 0) {
                    c = s.charAt(0);
                } else {
                    c = '?';
                }
                name = GlyphList.unicodeToName(c);
                if (name == null) {
                    name = notdef;
                }
                differences[k] = name;
                unicodeDifferences[k] = c;
                widths[k] = getRawWidth(c, name);
                charBBoxes[k] = getRawCharBBox(c, name);
            }
        }
    }

    /**
     * Gets the width from the font according to the Unicode char <CODE>c</CODE> or the
     * <CODE>name</CODE>. If the <CODE>name</CODE> is null it's a symbolic font.
     *
     * @param c the unicode char
     * @param name the glyph name
     * @return the width of the char
     */
    abstract int getRawWidth(int c, String name);

    /**
     * Gets the kerning between two Unicode chars.
     *
     * @param char1 the first char
     * @param char2 the second char
     * @return the kerning to be applied in normalized 1000 units
     */
    public abstract int getKerning(int char1, int char2);

    /**
     * Sets the kerning between two Unicode chars.
     *
     * @param char1 the first char
     * @param char2 the second char
     * @param kern the kerning to apply in normalized 1000 units
     * @return <code>true</code> if the kerning was applied, <code>false</code> otherwise
     */
    public abstract boolean setKerning(int char1, int char2, int kern);

    /**
     * Gets the width of a <CODE>char</CODE> in normalized 1000 units.
     *
     * @param char1 the unicode <CODE>char</CODE> to get the width of
     * @return the width in normalized 1000 units
     */
    public int getWidth(int char1) {
        if (fastWinansi) {
            if (char1 < 128 || char1 >= 160 && char1 <= 255) {
                return widths[char1];
            } else {
                return widths[PdfEncodings.winansi.get(char1)];
            }
        } else {
            int total = 0;
            byte mbytes[] = convertToBytes((char) char1);
            for (byte mbyte : mbytes) {
                total += widths[0xff & mbyte];
            }
            return total;
        }
    }

    /**
     * Gets the width of a <CODE>String</CODE> in normalized 1000 units.
     *
     * @param text the <CODE>String</CODE> to get the width of
     * @return the width in normalized 1000 units
     */
    public int getWidth(String text) {
        int total = 0;
        if (fastWinansi) {
            int len = text.length();
            for (int k = 0; k < len; ++k) {
                char char1 = text.charAt(k);
                if (char1 < 128 || char1 >= 160 && char1 <= 255) {
                    total += widths[char1];
                } else {
                    total += widths[PdfEncodings.winansi.get(char1)];
                }
            }
            return total;
        } else {
            byte mbytes[] = convertToBytes(text);
            for (byte mbyte : mbytes) {
                total += widths[0xff & mbyte];
            }
        }
        return total;
    }

    /**
     * Gets the descent of a <CODE>String</CODE> in normalized 1000 units. The descent will always
     * be less than or equal to zero even if all the characters have an higher descent.
     *
     * @param text the <CODE>String</CODE> to get the descent of
     * @return the descent in normalized 1000 units
     */
    public int getDescent(String text) {
        int min = 0;
        char chars[] = text.toCharArray();
        for (char c : chars) {
            int bbox[] = getCharBBox(c);
            if (bbox != null && bbox[1] < min) {
                min = bbox[1];
            }
        }
        return min;
    }

    /**
     * Gets the ascent of a <CODE>String</CODE> in normalized 1000 units. The ascent will always be
     * greater than or equal to zero even if all the characters have a lower ascent.
     *
     * @param text the <CODE>String</CODE> to get the ascent of
     * @return the ascent in normalized 1000 units
     */
    public int getAscent(String text) {
        int max = 0;
        char chars[] = text.toCharArray();
        for (char c : chars) {
            int bbox[] = getCharBBox(c);
            if (bbox != null && bbox[3] > max) {
                max = bbox[3];
            }
        }
        return max;
    }

    /**
     * Gets the descent of a <CODE>String</CODE> in points. The descent will always be less than or
     * equal to zero even if all the characters have an higher descent.
     *
     * @param text the <CODE>String</CODE> to get the descent of
     * @param fontSize the size of the font
     * @return the descent in points
     */
    public float getDescentPoint(String text, float fontSize) {
        return getDescent(text) * 0.001f * fontSize;
    }

    /**
     * Gets the ascent of a <CODE>String</CODE> in points. The ascent will always be greater than or
     * equal to zero even if all the characters have a lower ascent.
     *
     * @param text the <CODE>String</CODE> to get the ascent of
     * @param fontSize the size of the font
     * @return the ascent in points
     */
    public float getAscentPoint(String text, float fontSize) {
        return getAscent(text) * 0.001f * fontSize;
    }
    // ia>

    /**
     * Gets the width of a <CODE>String</CODE> in points taking kerning into account.
     *
     * @param text the <CODE>String</CODE> to get the width of
     * @param fontSize the font size
     * @return the width in points
     */
    public float getWidthPointKerned(String text, float fontSize) {
        float size = getWidth(text) * 0.001f * fontSize;
        if (!hasKernPairs()) {
            return size;
        }
        int len = text.length() - 1;
        int kern = 0;
        char c[] = text.toCharArray();
        for (int k = 0; k < len; ++k) {
            kern += getKerning(c[k], c[k + 1]);
        }
        return size + kern * 0.001f * fontSize;
    }

    /**
     * Gets the width of a <CODE>String</CODE> in points.
     *
     * @param text the <CODE>String</CODE> to get the width of
     * @param fontSize the font size
     * @return the width in points
     */
    public float getWidthPoint(String text, float fontSize) {
        return getWidth(text) * 0.001f * fontSize;
    }

    /**
     * Gets the width of a <CODE>char</CODE> in points.
     *
     * @param char1 the <CODE>char</CODE> to get the width of
     * @param fontSize the font size
     * @return the width in points
     */
    public float getWidthPoint(int char1, float fontSize) {
        return getWidth(char1) * 0.001f * fontSize;
    }

    /**
     * Converts a <CODE>String</CODE> to a </CODE>byte</CODE> array according to the font's
     * encoding.
     *
     * @param text the <CODE>String</CODE> to be converted
     * @return an array of <CODE>byte</CODE> representing the conversion according to the font's
     *         encoding
     */
    byte[] convertToBytes(String text) {
        if (directTextToByte) {
            return PdfEncodings.convertToBytes(text, null);
        }
        if (specialMap != null) {
            byte[] b = new byte[text.length()];
            int ptr = 0;
            int length = text.length();
            for (int k = 0; k < length; ++k) {
                char c = text.charAt(k);
                if (specialMap.containsKey(c)) {
                    b[ptr++] = (byte) specialMap.get(c);
                }
            }
            if (ptr < length) {
                byte[] b2 = new byte[ptr];
                System.arraycopy(b, 0, b2, 0, ptr);
                return b2;
            } else {
                return b;
            }
        }
        return PdfEncodings.convertToBytes(text, encoding);
    }

    /**
     * Converts a <CODE>char</CODE> to a </CODE>byte</CODE> array according to the font's encoding.
     *
     * @param char1 the <CODE>char</CODE> to be converted
     * @return an array of <CODE>byte</CODE> representing the conversion according to the font's
     *         encoding
     */
    byte[] convertToBytes(int char1) {
        if (directTextToByte) {
            return PdfEncodings.convertToBytes((char) char1, null);
        }
        if (specialMap != null) {
            if (specialMap.containsKey(char1)) {
                return new byte[] { (byte) specialMap.get(char1) };
            } else {
                return new byte[0];
            }
        }
        return PdfEncodings.convertToBytes((char) char1, encoding);
    }

    /**
     * Outputs to the writer the font dictionaries and streams.
     *
     * @param writer the writer for this document
     * @param ref the font indirect reference
     * @param params several parameters that depend on the font type
     * @throws IOException on error
     * @throws DocumentException error in generating the object
     */
    abstract void writeFont(PdfWriter writer, PdfIndirectReference ref, Object params[]) throws DocumentException, IOException;

    /**
     * Returns a PdfStream object with the full font program (if possible). This method will return
     * null for some types of fonts (CJKFont, Type3Font) or if there is no font program available
     * (standard Type 1 fonts).
     *
     * @return a PdfStream with the font program
     * @since 2.1.3
     */
    abstract PdfStream getFullFontStream() throws IOException, DocumentException;

    /**
     * Gets the encoding used to convert <CODE>String</CODE> into <CODE>byte[]</CODE>.
     *
     * @return the encoding name
     */
    public String getEncoding() {
        return encoding;
    }

    /**
     * Gets the font parameter identified by <CODE>key</CODE>. Valid values for <CODE>key</CODE> are
     * <CODE>ASCENT</CODE>, <CODE>AWT_ASCENT</CODE>, <CODE>CAPHEIGHT</CODE>, <CODE>DESCENT</CODE>,
     * <CODE>AWT_DESCENT</CODE>, <CODE>ITALICANGLE</CODE>, <CODE>BBOXLLX</CODE>,
     * <CODE>BBOXLLY</CODE>, <CODE>BBOXURX</CODE> and <CODE>BBOXURY</CODE>.
     *
     * @param key the parameter to be extracted
     * @param fontSize the font size in points
     * @return the parameter in points
     */
    public abstract float getFontDescriptor(int key, float fontSize);

    /**
     * Gets the font type. The font types can be: FONT_TYPE_T1, FONT_TYPE_TT, FONT_TYPE_CJK and
     * FONT_TYPE_TTUNI.
     *
     * @return the font type
     */
    public int getFontType() {
        return fontType;
    }

    /**
     * Gets the embedded flag.
     *
     * @return <CODE>true</CODE> if the font is embedded.
     */
    public boolean isEmbedded() {
        return embedded;
    }

    /**
     * Gets the symbolic flag of the font.
     *
     * @return <CODE>true</CODE> if the font is symbolic
     */
    public boolean isFontSpecific() {
        return fontSpecific;
    }

    /**
     * Creates a unique subset prefix to be added to the font name when the font is embedded and
     * subset.
     *
     * @return the subset prefix
     */
    public static String createSubsetPrefix() {
        String s = "";
        for (int k = 0; k < 6; ++k) {
            s += (char) (Math.random() * 26 + 'A');
        }
        return s + "+";
    }

    /**
     * Gets the Unicode character corresponding to the byte output to the pdf stream.
     *
     * @param index the byte index
     * @return the Unicode character
     */
    char getUnicodeDifferences(int index) {
        return unicodeDifferences[index];
    }

    /**
     * Gets the postscript font name.
     *
     * @return the postscript font name
     */
    public abstract String getPostscriptFontName();

    /**
     * Sets the font name that will appear in the pdf font dictionary. Use with care as it can
     * easily make a font unreadable if not embedded.
     *
     * @param name the new font name
     */
    public abstract void setPostscriptFontName(String name);

    /**
     * Gets the full name of the font. If it is a True Type font each array element will have
     * {Platform ID, Platform Encoding ID, Language ID, font name}. The interpretation of this
     * values can be found in the Open Type specification, chapter 2, in the 'name' table.<br>
     * For the other fonts the array has a single element with {"", "", "", font name}.
     *
     * @return the full name of the font
     */
    public abstract String[][] getFullFontName();

    /**
     * Gets all the entries of the names-table. If it is a True Type font each array element will
     * have {Name ID, Platform ID, Platform Encoding ID, Language ID, font name}. The interpretation
     * of this values can be found in the Open Type specification, chapter 2, in the 'name'
     * table.<br>
     * For the other fonts the array has a single element with {"4", "", "", "", font name}.
     *
     * @return the full name of the font
     * @since 2.0.8
     */
    public abstract String[][] getAllNameEntries();

    /**
     * Gets the full name of the font. If it is a True Type font each array element will have
     * {Platform ID, Platform Encoding ID, Language ID, font name}. The interpretation of this
     * values can be found in the Open Type specification, chapter 2, in the 'name' table.<br>
     * For the other fonts the array has a single element with {"", "", "", font name}.
     *
     * @param name the name of the font
     * @param encoding the encoding of the font
     * @param ttfAfm the true type font or the afm in a byte array
     * @throws DocumentException on error
     * @throws IOException on error
     * @return the full name of the font
     */
    public static String[][] getFullFontName(String name, String encoding, byte ttfAfm[]) throws DocumentException, IOException {
        String nameBase = getBaseName(name);
        BaseFont fontBuilt = null;
        if (nameBase.toLowerCase().endsWith(".ttf") || nameBase.toLowerCase().endsWith(".otf") || nameBase.toLowerCase().indexOf(".ttc,") > 0) {
            fontBuilt = new TrueTypeFont(name, CP1252, false, ttfAfm, true, false);
        } else {
            fontBuilt = createFont(name, encoding, false, false, ttfAfm, null);
        }
        return fontBuilt.getFullFontName();
    }

    /**
     * Gets all the names from the font. Only the required tables are read.
     *
     * @param name the name of the font
     * @param encoding the encoding of the font
     * @param ttfAfm the true type font or the afm in a byte array
     * @throws DocumentException on error
     * @throws IOException on error
     * @return an array of Object[] built with {getPostscriptFontName(), getFamilyFontName(),
     *         getFullFontName()}
     */
    public static Object[] getAllFontNames(String name, String encoding, byte ttfAfm[]) throws DocumentException, IOException {
        String nameBase = getBaseName(name);
        BaseFont fontBuilt = null;
        if (nameBase.toLowerCase().endsWith(".ttf") || nameBase.toLowerCase().endsWith(".otf") || nameBase.toLowerCase().indexOf(".ttc,") > 0) {
            fontBuilt = new TrueTypeFont(name, CP1252, false, ttfAfm, true, false);
        } else {
            fontBuilt = createFont(name, encoding, false, false, ttfAfm, null);
        }
        return new Object[] { fontBuilt.getPostscriptFontName(), fontBuilt.getFamilyFontName(), fontBuilt.getFullFontName() };
    }

    /**
     * Gets all the entries of the namestable from the font. Only the required tables are read.
     *
     * @param name the name of the font
     * @param encoding the encoding of the font
     * @param ttfAfm the true type font or the afm in a byte array
     * @throws DocumentException on error
     * @throws IOException on error
     * @return an array of Object[] built with {getPostscriptFontName(), getFamilyFontName(),
     *         getFullFontName()}
     * @since 2.0.8
     */
    public static String[][] getAllNameEntries(String name, String encoding, byte ttfAfm[]) throws DocumentException, IOException {
        String nameBase = getBaseName(name);
        BaseFont fontBuilt = null;
        if (nameBase.toLowerCase().endsWith(".ttf") || nameBase.toLowerCase().endsWith(".otf") || nameBase.toLowerCase().indexOf(".ttc,") > 0) {
            fontBuilt = new TrueTypeFont(name, CP1252, false, ttfAfm, true, false);
        } else {
            fontBuilt = createFont(name, encoding, false, false, ttfAfm, null);
        }
        return fontBuilt.getAllNameEntries();
    }

    /**
     * Gets the family name of the font. If it is a True Type font each array element will have
     * {Platform ID, Platform Encoding ID, Language ID, font name}. The interpretation of this
     * values can be found in the Open Type specification, chapter 2, in the 'name' table.<br>
     * For the other fonts the array has a single element with {"", "", "", font name}.
     *
     * @return the family name of the font
     */
    public abstract String[][] getFamilyFontName();

    /**
     * Gets the code pages supported by the font. This has only meaning with True Type fonts.
     *
     * @return the code pages supported by the font
     */
    public String[] getCodePagesSupported() {
        return new String[0];
    }

    /**
     * Enumerates the postscript font names present inside a True Type Collection.
     *
     * @param ttcFile the file name of the font
     * @throws DocumentException on error
     * @throws IOException on error
     * @return the postscript font names
     */
    public static String[] enumerateTTCNames(String ttcFile) throws DocumentException, IOException {
        return new EnumerateTTC(ttcFile).getNames();
    }

    /**
     * Enumerates the postscript font names present inside a True Type Collection.
     *
     * @param ttcArray the font as a <CODE>byte</CODE> array
     * @throws DocumentException on error
     * @throws IOException on error
     * @return the postscript font names
     */
    public static String[] enumerateTTCNames(byte ttcArray[]) throws DocumentException, IOException {
        return new EnumerateTTC(ttcArray).getNames();
    }

    /**
     * Gets the font width array.
     *
     * @return the font width array
     */
    public int[] getWidths() {
        return widths;
    }

    /**
     * Gets the array with the names of the characters.
     *
     * @return the array with the names of the characters
     */
    public String[] getDifferences() {
        return differences;
    }

    /**
     * Gets the array with the unicode characters.
     *
     * @return the array with the unicode characters
     */
    public char[] getUnicodeDifferences() {
        return unicodeDifferences;
    }

    /**
     * Gets the state of the property.
     *
     * @return value of property forceWidthsOutput
     */
    public boolean isForceWidthsOutput() {
        return forceWidthsOutput;
    }

    /**
     * Set to <CODE>true</CODE> to force the generation of the widths array.
     *
     * @param forceWidthsOutput <CODE>true</CODE> to force the generation of the widths array
     */
    public void setForceWidthsOutput(boolean forceWidthsOutput) {
        this.forceWidthsOutput = forceWidthsOutput;
    }

    /**
     * Gets the direct conversion of <CODE>char</CODE> to <CODE>byte</CODE>.
     *
     * @return value of property directTextToByte.
     * @see #setDirectTextToByte(boolean directTextToByte)
     */
    public boolean isDirectTextToByte() {
        return directTextToByte;
    }

    /**
     * Sets the conversion of <CODE>char</CODE> directly to <CODE>byte</CODE> by casting. This is a
     * low level feature to put the bytes directly in the content stream without passing through
     * String.getBytes().
     *
     * @param directTextToByte New value of property directTextToByte.
     */
    public void setDirectTextToByte(boolean directTextToByte) {
        this.directTextToByte = directTextToByte;
    }

    /**
     * Indicates if all the glyphs and widths for that particular encoding should be included in the
     * document.
     *
     * @return <CODE>false</CODE> to include all the glyphs and widths.
     */
    public boolean isSubset() {
        return subset;
    }

    /**
     * Indicates if all the glyphs and widths for that particular encoding should be included in the
     * document. When set to <CODE>true</CODE> only the glyphs used will be included in the font.
     * When set to <CODE>false</CODE> and {@link #addSubsetRange(int[])} was not called the full
     * font will be included otherwise just the characters ranges will be included.
     *
     * @param subset new value of property subset
     */
    public void setSubset(boolean subset) {
        this.subset = subset;
    }

    /**
     * Gets the font resources.
     *
     * @param key the full name of the resource
     * @return the <CODE>InputStream</CODE> to get the resource or <CODE>null</CODE> if not found
     */
    public static InputStream getResourceStream(String key) {
        return getResourceStream(key, null);
    }

    /**
     * Gets the font resources.
     *
     * @param key the full name of the resource
     * @param module the Module to load the resource or null to try the ones available
     * @return the <CODE>InputStream</CODE> to get the resource or <CODE>null</CODE> if not found
     */
    public static InputStream getResourceStream(String key, Module module) {
        if (key.startsWith("/")) {
            key = key.substring(1);
        }
        InputStream is = null;
        if (module != null) {
            try {
                is = module.getResourceAsStream(key);
                if (is != null) {
                    return is;
                }
            } catch (IOException ioe) {
                // Try next
            }
        }
        // Try to use Context Class Loader to load the properties file.
        try {
            ClassLoader contextClassLoader = Thread.currentThread().getContextClassLoader();
            if (contextClassLoader != null) {
                is = contextClassLoader.getResourceAsStream(key);
            }
        } catch (Throwable e) {
        }

        if (is == null) {
            try {
                is = BaseFont.class.getModule().getResourceAsStream("/" + key);
            } catch (IOException ioe) {
                // Try next
            }
        }
        if (is == null) {
            is = ClassLoader.getSystemResourceAsStream(key);
        }
        return is;
    }

    /**
     * Gets the Unicode equivalent to a CID. The (inexistent) CID <FF00> is translated as '\n'. It
     * has only meaning with CJK fonts with Identity encoding.
     *
     * @param c the CID code
     * @return the Unicode equivalent
     */
    public int getUnicodeEquivalent(int c) {
        return c;
    }

    /**
     * Gets the CID code given an Unicode. It has only meaning with CJK fonts.
     *
     * @param c the Unicode
     * @return the CID equivalent
     */
    public int getCidCode(int c) {
        return c;
    }

    /**
     * Checks if the font has any kerning pairs.
     *
     * @return <CODE>true</CODE> if the font has any kerning pairs
     */
    public abstract boolean hasKernPairs();

    /**
     * Checks if a character exists in this font.
     *
     * @param c the character to check
     * @return <CODE>true</CODE> if the character has a glyph, <CODE>false</CODE> otherwise
     */
    public boolean charExists(int c) {
        byte b[] = convertToBytes(c);
        return b.length > 0;
    }

    /**
     * Sets the character advance.
     *
     * @param c the character
     * @param advance the character advance normalized to 1000 units
     * @return <CODE>true</CODE> if the advance was set, <CODE>false</CODE> otherwise
     */
    public boolean setCharAdvance(int c, int advance) {
        byte b[] = convertToBytes(c);
        if (b.length == 0) {
            return false;
        }
        widths[0xff & b[0]] = advance;
        return true;
    }

    private static void addFont(PRIndirectReference fontRef, IntHashtable hits, ArrayList fonts) {
        PdfObject obj = PdfReader.getPdfObject(fontRef);
        if (obj == null || !obj.isDictionary()) {
            return;
        }
        PdfDictionary font = (PdfDictionary) obj;
        PdfName subtype = font.getAsName(PdfName.SUBTYPE);
        if (!PdfName.TYPE1.equals(subtype) && !PdfName.TRUETYPE.equals(subtype)) {
            return;
        }
        PdfName name = font.getAsName(PdfName.BASEFONT);
        fonts.add(new Object[] { PdfName.decodeName(name.toString()), fontRef });
        hits.put(fontRef.getNumber(), 1);
    }

    private static void recourseFonts(PdfDictionary page, IntHashtable hits, ArrayList fonts, int level) {
        ++level;
        if (level > 50) {
            return;
        }
        PdfDictionary resources = page.getAsDict(PdfName.RESOURCES);
        if (resources == null) {
            return;
        }
        PdfDictionary font = resources.getAsDict(PdfName.FONT);
        if (font != null) {
            for (Iterator it = font.getKeys().iterator(); it.hasNext();) {
                PdfObject ft = font.get((PdfName) it.next());
                if (ft == null || !ft.isIndirect()) {
                    continue;
                }
                int hit = ((PRIndirectReference) ft).getNumber();
                if (hits.containsKey(hit)) {
                    continue;
                }
                addFont((PRIndirectReference) ft, hits, fonts);
            }
        }
        PdfDictionary xobj = resources.getAsDict(PdfName.XOBJECT);
        if (xobj != null) {
            for (Iterator it = xobj.getKeys().iterator(); it.hasNext();) {
                recourseFonts(xobj.getAsDict((PdfName) it.next()), hits, fonts, level);
            }
        }
    }

    /**
     * Gets a list of all document fonts. Each element of the <CODE>ArrayList</CODE> contains a
     * <CODE>Object[]{String,PRIndirectReference}</CODE> with the font name and the indirect
     * reference to it.
     *
     * @param reader the document where the fonts are to be listed from
     * @return the list of fonts and references
     */
    public static ArrayList getDocumentFonts(PdfReader reader) {
        IntHashtable hits = new IntHashtable();
        ArrayList fonts = new ArrayList();
        int npages = reader.getNumberOfPages();
        for (int k = 1; k <= npages; ++k) {
            recourseFonts(reader.getPageN(k), hits, fonts, 1);
        }
        return fonts;
    }

    /**
     * Gets a list of the document fonts in a particular page. Each element of the
     * <CODE>ArrayList</CODE> contains a <CODE>Object[]{String,PRIndirectReference}</CODE> with the
     * font name and the indirect reference to it.
     *
     * @param reader the document where the fonts are to be listed from
     * @param page the page to list the fonts from
     * @return the list of fonts and references
     */
    public static ArrayList getDocumentFonts(PdfReader reader, int page) {
        IntHashtable hits = new IntHashtable();
        ArrayList fonts = new ArrayList();
        recourseFonts(reader.getPageN(page), hits, fonts, 1);
        return fonts;
    }

    /**
     * Gets the smallest box enclosing the character contours. It will return <CODE>null</CODE> if
     * the font has not the information or the character has no contours, as in the case of the
     * space, for example. Characters with no contours may also return [0,0,0,0].
     *
     * @param c the character to get the contour bounding box from
     * @return an array of four floats with the bounding box in the format [llx,lly,urx,ury] or
     *         <code>null</code>
     */
    public int[] getCharBBox(int c) {
        byte b[] = convertToBytes(c);
        if (b.length == 0) {
            return null;
        } else {
            return charBBoxes[b[0] & 0xff];
        }
    }

    protected abstract int[] getRawCharBBox(int c, String name);

    /**
     * iText expects Arabic Diactrics (tashkeel) to have zero advance but some fonts, most notably
     * those that come with Windows, like times.ttf, have non-zero advance for those characters.
     * This method makes those character to have zero width advance and work correctly in the iText
     * Arabic shaping and reordering context.
     */
    public void correctArabicAdvance() {
        for (char c = '\u064b'; c <= '\u0658'; ++c) {
            setCharAdvance(c, 0);
        }
        setCharAdvance('\u0670', 0);
        for (char c = '\u06d6'; c <= '\u06dc'; ++c) {
            setCharAdvance(c, 0);
        }
        for (char c = '\u06df'; c <= '\u06e4'; ++c) {
            setCharAdvance(c, 0);
        }
        for (char c = '\u06e7'; c <= '\u06e8'; ++c) {
            setCharAdvance(c, 0);
        }
        for (char c = '\u06ea'; c <= '\u06ed'; ++c) {
            setCharAdvance(c, 0);
        }
    }

    /**
     * Adds a character range when subsetting. The range is an <CODE>int</CODE> array where the
     * first element is the start range inclusive and the second element is the end range inclusive.
     * Several ranges are allowed in the same array.
     *
     * @param range the character range
     */
    public void addSubsetRange(int[] range) {
        if (subsetRanges == null) {
            subsetRanges = new ArrayList();
        }
        subsetRanges.add(range);
    }

    /**
     * Returns the compression level used for the font streams.
     *
     * @return the compression level (0 = best speed, 9 = best compression, -1 is default)
     * @since 2.1.3
     */
    public int getCompressionLevel() {
        return compressionLevel;
    }

    /**
     * Sets the compression level to be used for the font streams.
     *
     * @param compressionLevel a value between 0 (best speed) and 9 (best compression)
     * @since 2.1.3
     */
    public void setCompressionLevel(int compressionLevel) {
        if (compressionLevel < PdfStream.NO_COMPRESSION || compressionLevel > PdfStream.BEST_COMPRESSION) {
            this.compressionLevel = PdfStream.DEFAULT_COMPRESSION;
        } else {
            this.compressionLevel = compressionLevel;
        }
    }
}