diff options
Diffstat (limited to 'src/main/java/com/lowagie/text/pdf/PdfEncodings.java')
| -rw-r--r-- | src/main/java/com/lowagie/text/pdf/PdfEncodings.java | 716 |
1 files changed, 716 insertions, 0 deletions
diff --git a/src/main/java/com/lowagie/text/pdf/PdfEncodings.java b/src/main/java/com/lowagie/text/pdf/PdfEncodings.java new file mode 100644 index 0000000..ab9c468 --- /dev/null +++ b/src/main/java/com/lowagie/text/pdf/PdfEncodings.java @@ -0,0 +1,716 @@ +/*
+ * 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 com.lowagie.text.ExceptionConverter;
+import java.io.UnsupportedEncodingException;
+import java.io.IOException;
+import java.io.InputStream;
+import java.io.InputStreamReader;
+import java.io.BufferedReader;
+import java.util.ArrayList;
+import java.util.HashMap;
+import java.util.StringTokenizer;
+/** Supports fast encodings for winansi and PDFDocEncoding.
+ * Supports conversions from CJK encodings to CID.
+ * Supports custom encodings.
+ * @author Paulo Soares (psoares@consiste.pt)
+ */
+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 final HashMap extraEncodings = new HashMap();
+
+ static {
+ for (int k = 128; k < 160; ++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 a <CODE>String</CODE> to a </CODE>byte</CODE> array according
+ * to the font's encoding.
+ * @return an array of <CODE>byte</CODE> representing the conversion according to the font's encoding
+ * @param encoding the encoding
+ * @param text the <CODE>String</CODE> to 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 = null;
+ synchronized (extraEncodings) {
+ 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 a </CODE>byte</CODE> array to a <CODE>String</CODE> according
+ * to the some encoding.
+ * @param bytes the bytes to convert
+ * @param encoding the encoding
+ * @return the converted <CODE>String</CODE>
+ */
+ 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 = null;
+ synchronized (extraEncodings) {
+ 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 is <CODE>text</CODE> only has PdfDocEncoding characters.
+ * @param text the <CODE>String</CODE> to test
+ * @return <CODE>true</CODE> if 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. If <CODE>name</CODE> is 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 bi a newline in the resulting CID. See <CODE>CRLF_CID_NEWLINE</CODE>
+ */
+ 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 a <CODE>byte</CODE> array encoded as <CODE>name</CODE>
+ * to a CID string. This is needed to reach some CJK characters
+ * that don't exist in 16 bit Unicode.</p>
+ * The font to use this result must use the encoding "Identity-H"
+ * or "Identity-V".</p>
+ * See ftp://ftp.oreilly.com/pub/examples/nutshell/cjkv/adobe/.
+ * @param name the CJK encoding name
+ * @param seq the <CODE>byte</CODE> array to be decoded
+ * @return the CID string
+ */
+ public static String convertCmap(String name, byte seq[]) {
+ return convertCmap(name, seq, 0, seq.length);
+ }
+
+ /** Converts a <CODE>byte</CODE> array encoded as <CODE>name</CODE>
+ * to a CID string. This is needed to reach some CJK characters
+ * that don't exist in 16 bit Unicode.</p>
+ * The font to use this result must use the encoding "Identity-H"
+ * or "Identity-V".</p>
+ * 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 the <CODE>byte</CODE> array 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 = (int)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 = (int)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 = (int)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) {
+ extraEncodings.put(name.toLowerCase(), enc);
+ }
+ }
+
+ private static class WingdingsConversion implements ExtraEncoding {
+
+ 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 < ' ')
+ continue;
+ 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 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((int)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 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 = (int)table1[k];
+ if (v != 0)
+ t1.put(v, k + 32);
+ }
+ for (int k = 0; k < table2.length; ++k) {
+ int v = (int)table2[k];
+ if (v != 0)
+ t2.put(v, k + 32);
+ }
+ }
+ }
+
+ private static class SymbolTTConversion implements ExtraEncoding {
+
+ 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;
+ }
+
+ }
+}
|