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iText, a free Java-PDF library
/* * Copyright 2002 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 java.io.BufferedReader; import java.io.IOException; import java.io.InputStream; import java.io.InputStreamReader; import java.io.UnsupportedEncodingException; import java.util.ArrayList; import java.util.HashMap; import java.util.StringTokenizer; import com.lowagie.text.ExceptionConverter; /** Supports fast encodings for winansi and PDFDocEncoding. * Supports conversions from CJK encodings to CID. * Supports custom encodings. * @author Paulo Soares ([email protected]) */ public class PdfEncodings { protected static final int CIDNONE = 0; protected static final int CIDRANGE = 1; protected static final int CIDCHAR = 2; static final char winansiByteToChar[] = { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79, 80, 81, 82, 83, 84, 85, 86, 87, 88, 89, 90, 91, 92, 93, 94, 95, 96, 97, 98, 99, 100, 101, 102, 103, 104, 105, 106, 107, 108, 109, 110, 111, 112, 113, 114, 115, 116, 117, 118, 119, 120, 121, 122, 123, 124, 125, 126, 127, 8364, 65533, 8218, 402, 8222, 8230, 8224, 8225, 710, 8240, 352, 8249, 338, 65533, 381, 65533, 65533, 8216, 8217, 8220, 8221, 8226, 8211, 8212, 732, 8482, 353, 8250, 339, 65533, 382, 376, 160, 161, 162, 163, 164, 165, 166, 167, 168, 169, 170, 171, 172, 173, 174, 175, 176, 177, 178, 179, 180, 181, 182, 183, 184, 185, 186, 187, 188, 189, 190, 191, 192, 193, 194, 195, 196, 197, 198, 199, 200, 201, 202, 203, 204, 205, 206, 207, 208, 209, 210, 211, 212, 213, 214, 215, 216, 217, 218, 219, 220, 221, 222, 223, 224, 225, 226, 227, 228, 229, 230, 231, 232, 233, 234, 235, 236, 237, 238, 239, 240, 241, 242, 243, 244, 245, 246, 247, 248, 249, 250, 251, 252, 253, 254, 255}; static final char pdfEncodingByteToChar[] = { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79, 80, 81, 82, 83, 84, 85, 86, 87, 88, 89, 90, 91, 92, 93, 94, 95, 96, 97, 98, 99, 100, 101, 102, 103, 104, 105, 106, 107, 108, 109, 110, 111, 112, 113, 114, 115, 116, 117, 118, 119, 120, 121, 122, 123, 124, 125, 126, 127, 0x2022, 0x2020, 0x2021, 0x2026, 0x2014, 0x2013, 0x0192, 0x2044, 0x2039, 0x203a, 0x2212, 0x2030, 0x201e, 0x201c, 0x201d, 0x2018, 0x2019, 0x201a, 0x2122, 0xfb01, 0xfb02, 0x0141, 0x0152, 0x0160, 0x0178, 0x017d, 0x0131, 0x0142, 0x0153, 0x0161, 0x017e, 65533, 0x20ac, 161, 162, 163, 164, 165, 166, 167, 168, 169, 170, 171, 172, 173, 174, 175, 176, 177, 178, 179, 180, 181, 182, 183, 184, 185, 186, 187, 188, 189, 190, 191, 192, 193, 194, 195, 196, 197, 198, 199, 200, 201, 202, 203, 204, 205, 206, 207, 208, 209, 210, 211, 212, 213, 214, 215, 216, 217, 218, 219, 220, 221, 222, 223, 224, 225, 226, 227, 228, 229, 230, 231, 232, 233, 234, 235, 236, 237, 238, 239, 240, 241, 242, 243, 244, 245, 246, 247, 248, 249, 250, 251, 252, 253, 254, 255}; static final IntHashtable winansi = new IntHashtable(); static final IntHashtable pdfEncoding = new IntHashtable(); static HashMap extraEncodings = new HashMap(); static { for (int k = 128; k < 161; ++k) { char c = winansiByteToChar[k]; if (c != 65533) winansi.put(c, k); } for (int k = 128; k < 161; ++k) { char c = pdfEncodingByteToChar[k]; if (c != 65533) pdfEncoding.put(c, k); } addExtraEncoding("Wingdings", new WingdingsConversion()); addExtraEncoding("Symbol", new SymbolConversion(true)); addExtraEncoding("ZapfDingbats", new SymbolConversion(false)); addExtraEncoding("SymbolTT", new SymbolTTConversion()); addExtraEncoding("Cp437", new Cp437Conversion()); } /** Converts abyte array according * to the font's encoding. * @return an array ofStringto abyterepresenting the conversion according to the font's encoding * @param encoding the encoding * @param text theStringto be converted */ public static final byte[] convertToBytes(String text, String encoding) { if (text == null) return new byte[0]; if (encoding == null || encoding.length() == 0) { int len = text.length(); byte b[] = new byte[len]; for (int k = 0; k < len; ++k) b[k] = (byte)text.charAt(k); return b; } ExtraEncoding extra = (ExtraEncoding)extraEncodings.get(encoding.toLowerCase()); if (extra != null) { byte b[] = extra.charToByte(text, encoding); if (b != null) return b; } IntHashtable hash = null; if (encoding.equals(BaseFont.WINANSI)) hash = winansi; else if (encoding.equals(PdfObject.TEXT_PDFDOCENCODING)) hash = pdfEncoding; if (hash != null) { char cc[] = text.toCharArray(); int len = cc.length; int ptr = 0; byte b[] = new byte[len]; int c = 0; for (int k = 0; k < len; ++k) { char char1 = cc[k]; if (char1 < 128 || (char1 > 160 && char1 <= 255)) c = char1; else c = hash.get(char1); if (c != 0) b[ptr++] = (byte)c; } if (ptr == len) return b; byte b2[] = new byte[ptr]; System.arraycopy(b, 0, b2, 0, ptr); return b2; } if (encoding.equals(PdfObject.TEXT_UNICODE)) { // workaround for jdk 1.2.2 bug char cc[] = text.toCharArray(); int len = cc.length; byte b[] = new byte[cc.length * 2 + 2]; b[0] = -2; b[1] = -1; int bptr = 2; for (int k = 0; k < len; ++k) { char c = cc[k]; b[bptr++] = (byte)(c >> 8); b[bptr++] = (byte)(c & 0xff); } return b; } try { return text.getBytes(encoding); } catch (UnsupportedEncodingException e) { throw new ExceptionConverter(e); } } /** Converts aStringto a byte array according * to the font's encoding. * @return an array ofbyterepresenting the conversion according to the font's encoding * @param encoding the encoding * @param char1 thecharto be converted */ public static final byte[] convertToBytes(char char1, String encoding) { if (encoding == null || encoding.length() == 0) return new byte[]{(byte)char1}; ExtraEncoding extra = (ExtraEncoding)extraEncodings.get(encoding.toLowerCase()); if (extra != null) { byte b[] = extra.charToByte(char1, encoding); if (b != null) return b; } IntHashtable hash = null; if (encoding.equals(BaseFont.WINANSI)) hash = winansi; else if (encoding.equals(PdfObject.TEXT_PDFDOCENCODING)) hash = pdfEncoding; if (hash != null) { int c = 0; if (char1 < 128 || (char1 > 160 && char1 <= 255)) c = char1; else c = hash.get(char1); if (c != 0) return new byte[]{(byte)c}; else return new byte[0]; } if (encoding.equals(PdfObject.TEXT_UNICODE)) { // workaround for jdk 1.2.2 bug byte b[] = new byte[4]; b[0] = -2; b[1] = -1; b[2] = (byte)(char1 >> 8); b[3] = (byte)(char1 & 0xff); return b; } try { return String.valueOf(char1).getBytes(encoding); } catch (UnsupportedEncodingException e) { throw new ExceptionConverter(e); } } /** Converts a byte array to aStringaccording * to the some encoding. * @param bytes the bytes to convert * @param encoding the encoding * @return the convertedString*/ public static final String convertToString(byte bytes[], String encoding) { if (bytes == null) return PdfObject.NOTHING; if (encoding == null || encoding.length() == 0) { char c[] = new char[bytes.length]; for (int k = 0; k < bytes.length; ++k) c[k] = (char)(bytes[k] & 0xff); return new String(c); } ExtraEncoding extra = (ExtraEncoding)extraEncodings.get(encoding.toLowerCase()); if (extra != null) { String text = extra.byteToChar(bytes, encoding); if (text != null) return text; } char ch[] = null; if (encoding.equals(BaseFont.WINANSI)) ch = winansiByteToChar; else if (encoding.equals(PdfObject.TEXT_PDFDOCENCODING)) ch = pdfEncodingByteToChar; if (ch != null) { int len = bytes.length; char c[] = new char[len]; for (int k = 0; k < len; ++k) { c[k] = ch[bytes[k] & 0xff]; } return new String(c); } try { return new String(bytes, encoding); } catch (UnsupportedEncodingException e) { throw new ExceptionConverter(e); } } /** Checks istextonly has PdfDocEncoding characters. * @param text theStringto test * @returntrueif only PdfDocEncoding characters are present */ public static boolean isPdfDocEncoding(String text) { if (text == null) return true; int len = text.length(); for (int k = 0; k < len; ++k) { char char1 = text.charAt(k); if (char1 < 128 || (char1 > 160 && char1 <= 255)) continue; if (!pdfEncoding.containsKey(char1)) return false; } return true; } static final HashMap cmaps = new HashMap(); /** Assumes that '\\n' and '\\r\\n' are the newline sequences. It may not work for * all CJK encodings. To be used with loadCmap(). */ public static final byte CRLF_CID_NEWLINE[][] = new byte[][]{{(byte)'\n'}, {(byte)'\r', (byte)'\n'}}; /** Clears the CJK cmaps from the cache. Ifnameis the * empty string then all the cache is cleared. Calling this method * has no consequences other than the need to reload the cmap * if needed. * @param name the name of the cmap to clear or all the cmaps if the empty string */ public static void clearCmap(String name) { synchronized (cmaps) { if (name.length() == 0) cmaps.clear(); else cmaps.remove(name); } } /** Loads a CJK cmap to the cache with the option of associating * sequences to the newline. * @param name the CJK cmap name * @param newline the sequences to be replaced by a newline in the resulting CID. SeeCRLF_CID_NEWLINE*/ public static void loadCmap(String name, byte newline[][]) { try { char planes[][] = null; synchronized (cmaps) { planes = (char[][])cmaps.get(name); } if (planes == null) { planes = readCmap(name, newline); synchronized (cmaps) { cmaps.put(name, planes); } } } catch (IOException e) { throw new ExceptionConverter(e); } } /** Converts abytearray encoded asname* to a CID string. This is needed to reach some CJK characters * that don't exist in 16 bit Unicode. * The font to use this result must use the encoding "Identity-H" * or "Identity-V". * See ftp://ftp.oreilly.com/pub/examples/nutshell/cjkv/adobe/. * @param name the CJK encoding name * @param seq thebytearray to be decoded * @return the CID string */ public static String convertCmap(String name, byte seq[]) { return convertCmap(name, seq, 0, seq.length); } /** Converts abytearray encoded asname* to a CID string. This is needed to reach some CJK characters * that don't exist in 16 bit Unicode. * The font to use this result must use the encoding "Identity-H" * or "Identity-V". * See ftp://ftp.oreilly.com/pub/examples/nutshell/cjkv/adobe/. * @param name the CJK encoding name * @param start the start offset in the data * @param length the number of bytes to convert * @param seq thebytearray to be decoded * @return the CID string */ public static String convertCmap(String name, byte seq[], int start, int length) { try { char planes[][] = null; synchronized (cmaps) { planes = (char[][])cmaps.get(name); } if (planes == null) { planes = readCmap(name, (byte[][])null); synchronized (cmaps) { cmaps.put(name, planes); } } return decodeSequence(seq, start, length, planes); } catch (IOException e) { throw new ExceptionConverter(e); } } static String decodeSequence(byte seq[], int start, int length, char planes[][]) { StringBuffer buf = new StringBuffer(); int end = start + length; int currentPlane = 0; for (int k = start; k < end; ++k) { int one = seq[k] & 0xff; char plane[] = planes[currentPlane]; int cid = plane[one]; if ((cid & 0x8000) == 0) { buf.append((char)cid); currentPlane = 0; } else currentPlane = cid & 0x7fff; } return buf.toString(); } static char[][] readCmap(String name, byte newline[][]) throws IOException { ArrayList planes = new ArrayList(); planes.add(new char[256]); readCmap(name, planes); if (newline != null) { for (int k = 0; k < newline.length; ++k) encodeSequence(newline[k].length, newline[k], BaseFont.CID_NEWLINE, planes); } char ret[][] = new char[planes.size()][]; return (char[][])planes.toArray(ret); } static void readCmap(String name, ArrayList planes) throws IOException { String fullName = BaseFont.RESOURCE_PATH + "cmaps/" + name; InputStream in = BaseFont.getResourceStream(fullName); if (in == null) throw new IOException("The Cmap " + name + " was not found."); encodeStream(in, planes); in.close(); } static void encodeStream(InputStream in, ArrayList planes) throws IOException { BufferedReader rd = new BufferedReader(new InputStreamReader(in, "iso-8859-1")); String line = null; int state = CIDNONE; byte seqs[] = new byte[7]; while ((line = rd.readLine()) != null) { if (line.length() < 6) continue; switch (state) { case CIDNONE: { if (line.indexOf("begincidrange") >= 0) state = CIDRANGE; else if (line.indexOf("begincidchar") >= 0) state = CIDCHAR; else if (line.indexOf("usecmap") >= 0) { StringTokenizer tk = new StringTokenizer(line); String t = tk.nextToken(); readCmap(t.substring(1), planes); } break; } case CIDRANGE: { if (line.indexOf("endcidrange") >= 0) { state = CIDNONE; break; } StringTokenizer tk = new StringTokenizer(line); String t = tk.nextToken(); int size = t.length() / 2 - 1; long start = Long.parseLong(t.substring(1, t.length() - 1), 16); t = tk.nextToken(); long end = Long.parseLong(t.substring(1, t.length() - 1), 16); t = tk.nextToken(); int cid = Integer.parseInt(t); for (long k = start; k <= end; ++k) { breakLong(k, size, seqs); encodeSequence(size, seqs, (char)cid, planes); ++cid; } break; } case CIDCHAR: { if (line.indexOf("endcidchar") >= 0) { state = CIDNONE; break; } StringTokenizer tk = new StringTokenizer(line); String t = tk.nextToken(); int size = t.length() / 2 - 1; long start = Long.parseLong(t.substring(1, t.length() - 1), 16); t = tk.nextToken(); int cid = Integer.parseInt(t); breakLong(start, size, seqs); encodeSequence(size, seqs, (char)cid, planes); break; } } } } static void breakLong(long n, int size, byte seqs[]) { for (int k = 0; k < size; ++k) { seqs[k] = (byte)(n >> ((size - 1 - k) * 8)); } } static void encodeSequence(int size, byte seqs[], char cid, ArrayList planes) { --size; int nextPlane = 0; for (int idx = 0; idx < size; ++idx) { char plane[] = (char[])planes.get(nextPlane); int one = seqs[idx] & 0xff; char c = plane[one]; if (c != 0 && (c & 0x8000) == 0) throw new RuntimeException("Inconsistent mapping."); if (c == 0) { planes.add(new char[256]); c = (char)((planes.size() - 1) | 0x8000); plane[one] = c; } nextPlane = c & 0x7fff; } char plane[] = (char[])planes.get(nextPlane); int one = seqs[size] & 0xff; char c = plane[one]; if ((c & 0x8000) != 0) throw new RuntimeException("Inconsistent mapping."); plane[one] = cid; } /** Adds an extra encoding. * @param name the name of the encoding. The encoding recognition is case insensitive * @param enc the conversion class */ public static void addExtraEncoding(String name, ExtraEncoding enc) { synchronized (extraEncodings) { // This serializes concurrent updates HashMap newEncodings = (HashMap)extraEncodings.clone(); newEncodings.put(name.toLowerCase(), enc); extraEncodings = newEncodings; // This swap does not require synchronization with reader } } private static class WingdingsConversion implements ExtraEncoding { public byte[] charToByte(char char1, String encoding) { if (char1 == ' ') return new byte[]{(byte)char1}; else if (char1 >= '\u2701' && char1 <= '\u27BE') { byte v = table[char1 - 0x2700]; if (v != 0) return new byte[]{v}; } return new byte[0]; } public byte[] charToByte(String text, String encoding) { char cc[] = text.toCharArray(); byte b[] = new byte[cc.length]; int ptr = 0; int len = cc.length; for (int k = 0; k < len; ++k) { char c = cc[k]; if (c == ' ') b[ptr++] = (byte)c; else if (c >= '\u2701' && c <= '\u27BE') { byte v = table[c - 0x2700]; if (v != 0) b[ptr++] = v; } } if (ptr == len) return b; byte b2[] = new byte[ptr]; System.arraycopy(b, 0, b2, 0, ptr); return b2; } public String byteToChar(byte[] b, String encoding) { return null; } private final static byte table[] = { 0, 35, 34, 0, 0, 0, 41, 62, 81, 42, 0, 0, 65, 63, 0, 0, 0, 0, 0, -4, 0, 0, 0, -5, 0, 0, 0, 0, 0, 0, 86, 0, 88, 89, 0, 0, 0, 0, 0, 0, 0, 0, -75, 0, 0, 0, 0, 0, -74, 0, 0, 0, -83, -81, -84, 0, 0, 0, 0, 0, 0, 0, 0, 124, 123, 0, 0, 0, 84, 0, 0, 0, 0, 0, 0, 0, 0, -90, 0, 0, 0, 113, 114, 0, 0, 0, 117, 0, 0, 0, 0, 0, 0, 125, 126, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, -116, -115, -114, -113, -112, -111, -110, -109, -108, -107, -127, -126, -125, -124, -123, -122, -121, -120, -119, -118, -116, -115, -114, -113, -112, -111, -110, -109, -108, -107, -24, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, -24, -40, 0, 0, -60, -58, 0, 0, -16, 0, 0, 0, 0, 0, 0, 0, 0, 0, -36, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 }; } private static class Cp437Conversion implements ExtraEncoding { private static IntHashtable c2b = new IntHashtable(); public byte[] charToByte(String text, String encoding) { char cc[] = text.toCharArray(); byte b[] = new byte[cc.length]; int ptr = 0; int len = cc.length; for (int k = 0; k < len; ++k) { char c = cc[k]; if (c < 128) b[ptr++] = (byte)c; else { byte v = (byte)c2b.get(c); if (v != 0) b[ptr++] = v; } } if (ptr == len) return b; byte b2[] = new byte[ptr]; System.arraycopy(b, 0, b2, 0, ptr); return b2; } public byte[] charToByte(char char1, String encoding) { if (char1 < 128) return new byte[]{(byte)char1}; else { byte v = (byte)c2b.get(char1); if (v != 0) return new byte[]{v}; else return new byte[0]; } } public String byteToChar(byte[] b, String encoding) { int len = b.length; char cc[] = new char[len]; int ptr = 0; for (int k = 0; k < len; ++k) { int c = b[k] & 0xff; if (c < ' ') continue; if (c < 128) cc[ptr++] = (char)c; else { char v = table[c - 128]; cc[ptr++] = v; } } return new String(cc, 0, ptr); } private final static char table[] = { '\u00C7', '\u00FC', '\u00E9', '\u00E2', '\u00E4', '\u00E0', '\u00E5', '\u00E7', '\u00EA', '\u00EB', '\u00E8', '\u00EF', '\u00EE', '\u00EC', '\u00C4', '\u00C5', '\u00C9', '\u00E6', '\u00C6', '\u00F4', '\u00F6', '\u00F2', '\u00FB', '\u00F9', '\u00FF', '\u00D6', '\u00DC', '\u00A2', '\u00A3', '\u00A5', '\u20A7', '\u0192', '\u00E1', '\u00ED', '\u00F3', '\u00FA', '\u00F1', '\u00D1', '\u00AA', '\u00BA', '\u00BF', '\u2310', '\u00AC', '\u00BD', '\u00BC', '\u00A1', '\u00AB', '\u00BB', '\u2591', '\u2592', '\u2593', '\u2502', '\u2524', '\u2561', '\u2562', '\u2556', '\u2555', '\u2563', '\u2551', '\u2557', '\u255D', '\u255C', '\u255B', '\u2510', '\u2514', '\u2534', '\u252C', '\u251C', '\u2500', '\u253C', '\u255E', '\u255F', '\u255A', '\u2554', '\u2569', '\u2566', '\u2560', '\u2550', '\u256C', '\u2567', '\u2568', '\u2564', '\u2565', '\u2559', '\u2558', '\u2552', '\u2553', '\u256B', '\u256A', '\u2518', '\u250C', '\u2588', '\u2584', '\u258C', '\u2590', '\u2580', '\u03B1', '\u00DF', '\u0393', '\u03C0', '\u03A3', '\u03C3', '\u00B5', '\u03C4', '\u03A6', '\u0398', '\u03A9', '\u03B4', '\u221E', '\u03C6', '\u03B5', '\u2229', '\u2261', '\u00B1', '\u2265', '\u2264', '\u2320', '\u2321', '\u00F7', '\u2248', '\u00B0', '\u2219', '\u00B7', '\u221A', '\u207F', '\u00B2', '\u25A0', '\u00A0' }; static { for (int k = 0; k < table.length; ++k) c2b.put(table[k], k + 128); } } private static class SymbolConversion implements ExtraEncoding { private static final IntHashtable t1 = new IntHashtable(); private static final IntHashtable t2 = new IntHashtable(); private IntHashtable translation; SymbolConversion(boolean symbol) { if (symbol) translation = t1; else translation = t2; } public byte[] charToByte(String text, String encoding) { char cc[] = text.toCharArray(); byte b[] = new byte[cc.length]; int ptr = 0; int len = cc.length; for (int k = 0; k < len; ++k) { char c = cc[k]; byte v = (byte)translation.get(c); if (v != 0) b[ptr++] = v; } if (ptr == len) return b; byte b2[] = new byte[ptr]; System.arraycopy(b, 0, b2, 0, ptr); return b2; } public byte[] charToByte(char char1, String encoding) { byte v = (byte)translation.get(char1); if (v != 0) return new byte[]{v}; else return new byte[0]; } public String byteToChar(byte[] b, String encoding) { return null; } private final static char table1[] = { ' ','!','\u2200','#','\u2203','%','&','\u220b','(',')','*','+',',','-','.','/', '0','1','2','3','4','5','6','7','8','9',':',';','<','=','>','?', '\u2245','\u0391','\u0392','\u03a7','\u0394','\u0395','\u03a6','\u0393','\u0397','\u0399','\u03d1','\u039a','\u039b','\u039c','\u039d','\u039f', '\u03a0','\u0398','\u03a1','\u03a3','\u03a4','\u03a5','\u03c2','\u03a9','\u039e','\u03a8','\u0396','[','\u2234',']','\u22a5','_', '\u0305','\u03b1','\u03b2','\u03c7','\u03b4','\u03b5','\u03d5','\u03b3','\u03b7','\u03b9','\u03c6','\u03ba','\u03bb','\u03bc','\u03bd','\u03bf', '\u03c0','\u03b8','\u03c1','\u03c3','\u03c4','\u03c5','\u03d6','\u03c9','\u03be','\u03c8','\u03b6','{','|','}','~','\0', '\0','\0','\0','\0','\0','\0','\0','\0','\0','\0','\0','\0','\0','\0','\0','\0', '\0','\0','\0','\0','\0','\0','\0','\0','\0','\0','\0','\0','\0','\0','\0','\0', '\u20ac','\u03d2','\u2032','\u2264','\u2044','\u221e','\u0192','\u2663','\u2666','\u2665','\u2660','\u2194','\u2190','\u2191','\u2192','\u2193', '\u00b0','\u00b1','\u2033','\u2265','\u00d7','\u221d','\u2202','\u2022','\u00f7','\u2260','\u2261','\u2248','\u2026','\u2502','\u2500','\u21b5', '\u2135','\u2111','\u211c','\u2118','\u2297','\u2295','\u2205','\u2229','\u222a','\u2283','\u2287','\u2284','\u2282','\u2286','\u2208','\u2209', '\u2220','\u2207','\u00ae','\u00a9','\u2122','\u220f','\u221a','\u2022','\u00ac','\u2227','\u2228','\u21d4','\u21d0','\u21d1','\u21d2','\u21d3', '\u25ca','\u2329','\0','\0','\0','\u2211','\u239b','\u239c','\u239d','\u23a1','\u23a2','\u23a3','\u23a7','\u23a8','\u23a9','\u23aa', '\0','\u232a','\u222b','\u2320','\u23ae','\u2321','\u239e','\u239f','\u23a0','\u23a4','\u23a5','\u23a6','\u23ab','\u23ac','\u23ad','\0' }; private final static char table2[] = { '\u0020','\u2701','\u2702','\u2703','\u2704','\u260e','\u2706','\u2707','\u2708','\u2709','\u261b','\u261e','\u270C','\u270D','\u270E','\u270F', '\u2710','\u2711','\u2712','\u2713','\u2714','\u2715','\u2716','\u2717','\u2718','\u2719','\u271A','\u271B','\u271C','\u271D','\u271E','\u271F', '\u2720','\u2721','\u2722','\u2723','\u2724','\u2725','\u2726','\u2727','\u2605','\u2729','\u272A','\u272B','\u272C','\u272D','\u272E','\u272F', '\u2730','\u2731','\u2732','\u2733','\u2734','\u2735','\u2736','\u2737','\u2738','\u2739','\u273A','\u273B','\u273C','\u273D','\u273E','\u273F', '\u2740','\u2741','\u2742','\u2743','\u2744','\u2745','\u2746','\u2747','\u2748','\u2749','\u274A','\u274B','\u25cf','\u274D','\u25a0','\u274F', '\u2750','\u2751','\u2752','\u25b2','\u25bc','\u25c6','\u2756','\u25d7','\u2758','\u2759','\u275A','\u275B','\u275C','\u275D','\u275E','\u0000', '\0','\0','\0','\0','\0','\0','\0','\0','\0','\0','\0','\0','\0','\0','\0','\0', '\0','\0','\0','\0','\0','\0','\0','\0','\0','\0','\0','\0','\0','\0','\0','\0', '\u0000','\u2761','\u2762','\u2763','\u2764','\u2765','\u2766','\u2767','\u2663','\u2666','\u2665','\u2660','\u2460','\u2461','\u2462','\u2463', '\u2464','\u2465','\u2466','\u2467','\u2468','\u2469','\u2776','\u2777','\u2778','\u2779','\u277A','\u277B','\u277C','\u277D','\u277E','\u277F', '\u2780','\u2781','\u2782','\u2783','\u2784','\u2785','\u2786','\u2787','\u2788','\u2789','\u278A','\u278B','\u278C','\u278D','\u278E','\u278F', '\u2790','\u2791','\u2792','\u2793','\u2794','\u2192','\u2194','\u2195','\u2798','\u2799','\u279A','\u279B','\u279C','\u279D','\u279E','\u279F', '\u27A0','\u27A1','\u27A2','\u27A3','\u27A4','\u27A5','\u27A6','\u27A7','\u27A8','\u27A9','\u27AA','\u27AB','\u27AC','\u27AD','\u27AE','\u27AF', '\u0000','\u27B1','\u27B2','\u27B3','\u27B4','\u27B5','\u27B6','\u27B7','\u27B8','\u27B9','\u27BA','\u27BB','\u27BC','\u27BD','\u27BE','\u0000' }; static { for (int k = 0; k < table1.length; ++k) { int v = table1[k]; if (v != 0) t1.put(v, k + 32); } for (int k = 0; k < table2.length; ++k) { int v = table2[k]; if (v != 0) t2.put(v, k + 32); } } } private static class SymbolTTConversion implements ExtraEncoding { public byte[] charToByte(char char1, String encoding) { if ((char1 & 0xff00) == 0 || (char1 & 0xff00) == 0xf000) return new byte[]{(byte)char1}; else return new byte[0]; } public byte[] charToByte(String text, String encoding) { char ch[] = text.toCharArray(); byte b[] = new byte[ch.length]; int ptr = 0; int len = ch.length; for (int k = 0; k < len; ++k) { char c = ch[k]; if ((c & 0xff00) == 0 || (c & 0xff00) == 0xf000) b[ptr++] = (byte)c; } if (ptr == len) return b; byte b2[] = new byte[ptr]; System.arraycopy(b, 0, b2, 0, ptr); return b2; } public String byteToChar(byte[] b, String encoding) { return null; } } }