J. Duke | 319a3b9 | 2007-12-01 00:00:00 +0000 | [diff] [blame^] | 1 | /* |
| 2 | * Copyright 2003-2005 Sun Microsystems, Inc. All Rights Reserved. |
| 3 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| 4 | * |
| 5 | * This code is free software; you can redistribute it and/or modify it |
| 6 | * under the terms of the GNU General Public License version 2 only, as |
| 7 | * published by the Free Software Foundation. Sun designates this |
| 8 | * particular file as subject to the "Classpath" exception as provided |
| 9 | * by Sun in the LICENSE file that accompanied this code. |
| 10 | * |
| 11 | * This code is distributed in the hope that it will be useful, but WITHOUT |
| 12 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| 13 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| 14 | * version 2 for more details (a copy is included in the LICENSE file that |
| 15 | * accompanied this code). |
| 16 | * |
| 17 | * You should have received a copy of the GNU General Public License version |
| 18 | * 2 along with this work; if not, write to the Free Software Foundation, |
| 19 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| 20 | * |
| 21 | * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, |
| 22 | * CA 95054 USA or visit www.sun.com if you need additional information or |
| 23 | * have any questions. |
| 24 | */ |
| 25 | |
| 26 | package sun.font; |
| 27 | |
| 28 | import java.awt.FontFormatException; |
| 29 | import java.awt.font.FontRenderContext; |
| 30 | import java.awt.geom.GeneralPath; |
| 31 | import java.awt.geom.Rectangle2D; |
| 32 | import java.util.HashMap; |
| 33 | import java.util.Locale; |
| 34 | import java.nio.charset.*; |
| 35 | import java.nio.CharBuffer; |
| 36 | import java.nio.ByteBuffer; |
| 37 | |
| 38 | class XMap { |
| 39 | |
| 40 | private static HashMap xMappers = new HashMap(); |
| 41 | |
| 42 | /* ConvertedGlyphs has unicode code points as indexes and values |
| 43 | * are platform-encoded multi-bytes chars packed into java chars. |
| 44 | * These platform-encoded characters are equated to glyph ids, although |
| 45 | * that's not strictly true, as X11 only supports using chars. |
| 46 | * The assumption carried over from the native implementation that |
| 47 | * a char is big enough to hold an X11 glyph id (ie platform char). |
| 48 | */ |
| 49 | char[] convertedGlyphs; |
| 50 | |
| 51 | static synchronized XMap getXMapper(String encoding) { |
| 52 | XMap mapper = (XMap)xMappers.get(encoding); |
| 53 | if (mapper == null) { |
| 54 | mapper = getXMapperInternal(encoding); |
| 55 | xMappers.put(encoding, mapper); |
| 56 | } |
| 57 | return mapper; |
| 58 | } |
| 59 | |
| 60 | static final int SINGLE_BYTE = 1; |
| 61 | static final int DOUBLE_BYTE = 2; |
| 62 | |
| 63 | private static XMap getXMapperInternal(String encoding) { |
| 64 | |
| 65 | String jclass = null; |
| 66 | int nBytes = SINGLE_BYTE; |
| 67 | int maxU = 0xffff; |
| 68 | int minU = 0; |
| 69 | boolean addAscii = false; |
| 70 | boolean lowPartOnly = false; |
| 71 | if (encoding.equals("dingbats")) { |
| 72 | jclass = "sun.awt.motif.X11Dingbats"; |
| 73 | minU = 0x2701; |
| 74 | maxU = 0x27be; |
| 75 | } else if (encoding.equals("symbol")){ |
| 76 | jclass = "sun.awt.Symbol"; |
| 77 | minU = 0x0391; |
| 78 | maxU = 0x22ef; |
| 79 | } else if (encoding.equals("iso8859-1")) { |
| 80 | maxU = 0xff; |
| 81 | } else if (encoding.equals("iso8859-2")) { |
| 82 | jclass = "ISO8859_2"; |
| 83 | } else if (encoding.equals("jisx0208.1983-0")) { |
| 84 | jclass = "sun.awt.motif.X11JIS0208"; |
| 85 | nBytes = DOUBLE_BYTE; |
| 86 | } else if (encoding.equals("jisx0201.1976-0")) { |
| 87 | jclass = "sun.awt.motif.X11JIS0201"; |
| 88 | // this is mapping the latin supplement range 128->255 which |
| 89 | // doesn't exist in JIS0201. This needs examination. |
| 90 | // it was also overwriting a couple of the mappings of |
| 91 | // 7E and A5 which in JIS201 are different chars than in |
| 92 | // Latin 1. I have revised AddAscii to not overwrite chars |
| 93 | // which are already converted. |
| 94 | addAscii = true; |
| 95 | lowPartOnly = true; |
| 96 | } else if (encoding.equals("jisx0212.1990-0")) { |
| 97 | jclass = "sun.awt.motif.X11JIS0212"; |
| 98 | nBytes = DOUBLE_BYTE; |
| 99 | } else if (encoding.equals("iso8859-4")) { |
| 100 | jclass = "ISO8859_4"; |
| 101 | } else if (encoding.equals("iso8859-5")) { |
| 102 | jclass = "ISO8859_5"; |
| 103 | } else if (encoding.equals("koi8-r")) { |
| 104 | jclass = "KOI8_R"; |
| 105 | } else if (encoding.equals("ansi-1251")) { |
| 106 | jclass = "windows-1251"; |
| 107 | } else if (encoding.equals("iso8859-6")) { |
| 108 | jclass = "ISO8859_6"; |
| 109 | } else if (encoding.equals("iso8859-7")) { |
| 110 | jclass = "ISO8859_7"; |
| 111 | } else if (encoding.equals("iso8859-8")) { |
| 112 | jclass = "ISO8859_8"; |
| 113 | } else if (encoding.equals("iso8859-9")) { |
| 114 | jclass = "ISO8859_9"; |
| 115 | } else if (encoding.equals("iso8859-13")) { |
| 116 | jclass = "ISO8859_13"; |
| 117 | } else if (encoding.equals("iso8859-15")) { |
| 118 | jclass = "ISO8859_15"; |
| 119 | } else if (encoding.equals("ksc5601.1987-0")) { |
| 120 | jclass ="sun.awt.motif.X11KSC5601"; |
| 121 | nBytes = DOUBLE_BYTE; |
| 122 | } else if (encoding.equals( "ksc5601.1992-3")) { |
| 123 | jclass ="sun.awt.motif.X11Johab"; |
| 124 | nBytes = DOUBLE_BYTE; |
| 125 | } else if (encoding.equals( "ksc5601.1987-1")) { |
| 126 | jclass ="EUC_KR"; |
| 127 | nBytes = DOUBLE_BYTE; |
| 128 | } else if (encoding.equals( "cns11643-1")) { |
| 129 | jclass = "sun.awt.motif.X11CNS11643P1"; |
| 130 | nBytes = DOUBLE_BYTE; |
| 131 | } else if (encoding.equals("cns11643-2")) { |
| 132 | jclass = "sun.awt.motif.X11CNS11643P2"; |
| 133 | nBytes = DOUBLE_BYTE; |
| 134 | } else if (encoding.equals("cns11643-3")) { |
| 135 | jclass = "sun.awt.motif.X11CNS11643P3"; |
| 136 | nBytes = DOUBLE_BYTE; |
| 137 | } else if (encoding.equals("gb2312.1980-0")) { |
| 138 | jclass = "sun.awt.motif.X11GB2312"; |
| 139 | nBytes = DOUBLE_BYTE; |
| 140 | } else if (encoding.indexOf("big5") >= 0) { |
| 141 | jclass = "Big5"; |
| 142 | nBytes = DOUBLE_BYTE; |
| 143 | addAscii = true; |
| 144 | } else if (encoding.equals("tis620.2533-0")) { |
| 145 | jclass = "TIS620"; |
| 146 | } else if (encoding.equals("gbk-0")) { |
| 147 | jclass = "sun.awt.motif.X11GBK"; |
| 148 | nBytes = DOUBLE_BYTE; |
| 149 | } else if (encoding.indexOf("sun.unicode-0") >= 0) { |
| 150 | jclass = "sun.awt.motif.X11SunUnicode_0"; |
| 151 | nBytes = DOUBLE_BYTE; |
| 152 | } else if (encoding.indexOf("gb18030.2000-1") >= 0) { |
| 153 | jclass = "sun.awt.motif.X11GB18030_1"; |
| 154 | nBytes = DOUBLE_BYTE; |
| 155 | } else if (encoding.indexOf( "gb18030.2000-0") >= 0) { |
| 156 | jclass = "sun.awt.motif.X11GB18030_0"; |
| 157 | nBytes = DOUBLE_BYTE; |
| 158 | } else if (encoding.indexOf("hkscs") >= 0) { |
| 159 | jclass = "sun.awt.HKSCS"; |
| 160 | nBytes = DOUBLE_BYTE; |
| 161 | } |
| 162 | return new XMap(jclass, minU, maxU, nBytes, addAscii, lowPartOnly); |
| 163 | } |
| 164 | |
| 165 | private static final char SURR_MIN = '\uD800'; |
| 166 | private static final char SURR_MAX = '\uDFFF'; |
| 167 | |
| 168 | private XMap(String className, int minU, int maxU, int nBytes, |
| 169 | boolean addAscii, boolean lowPartOnly) { |
| 170 | |
| 171 | CharsetEncoder enc = null; |
| 172 | if (className != null) { |
| 173 | try { |
| 174 | if (className.startsWith("sun.awt")) { |
| 175 | enc = ((Charset)Class.forName(className).newInstance()).newEncoder(); |
| 176 | } else { |
| 177 | enc = Charset.forName(className).newEncoder(); |
| 178 | } |
| 179 | } catch (Exception x) {x.printStackTrace();} |
| 180 | } |
| 181 | if (enc == null) { |
| 182 | convertedGlyphs = new char[256]; |
| 183 | for (int i=0; i<256; i++) { |
| 184 | convertedGlyphs[i] = (char)i; |
| 185 | } |
| 186 | return; |
| 187 | } else { |
| 188 | /* chars is set to the unicode values to convert, |
| 189 | * bytes is where the X11 character codes will be output. |
| 190 | * Finally we pack the byte pairs into chars. |
| 191 | */ |
| 192 | int count = maxU - minU + 1; |
| 193 | byte[] bytes = new byte[count*nBytes]; |
| 194 | char[] chars = new char[count]; |
| 195 | for (int i=0; i<count; i++) { |
| 196 | chars[i] = (char)(minU+i); |
| 197 | } |
| 198 | int startCharIndex = 0; |
| 199 | /* For multi-byte encodings, single byte chars should be skipped */ |
| 200 | if (nBytes > SINGLE_BYTE && minU < 256) { |
| 201 | startCharIndex = 256-minU; |
| 202 | } |
| 203 | byte[] rbytes = new byte[nBytes]; |
| 204 | try { |
| 205 | int cbLen = 0; |
| 206 | int bbLen = 0; |
| 207 | // Since we dont support surrogates in any X11 encoding, skip |
| 208 | // the surrogate area, otherwise the sequence of "Oxdbff0xdc00" |
| 209 | // will accidently cause the surrogate-aware nio charset to treat |
| 210 | // them as a legal pair and then undesirablly skip 2 "chars" |
| 211 | // for one "unmappable character" |
| 212 | if (startCharIndex < SURR_MIN && startCharIndex + count >SURR_MAX) { |
| 213 | cbLen = SURR_MIN - startCharIndex; |
| 214 | bbLen = cbLen * nBytes; |
| 215 | enc.onMalformedInput(CodingErrorAction.REPLACE) |
| 216 | .onUnmappableCharacter(CodingErrorAction.REPLACE) |
| 217 | .replaceWith(rbytes) |
| 218 | .encode(CharBuffer.wrap(chars, startCharIndex, cbLen), |
| 219 | ByteBuffer.wrap(bytes, startCharIndex * nBytes, bbLen), |
| 220 | true); |
| 221 | startCharIndex = SURR_MAX + 1; |
| 222 | } |
| 223 | cbLen = count - startCharIndex; |
| 224 | bbLen = cbLen * nBytes; |
| 225 | enc.onMalformedInput(CodingErrorAction.REPLACE) |
| 226 | .onUnmappableCharacter(CodingErrorAction.REPLACE) |
| 227 | .replaceWith(rbytes) |
| 228 | .encode(CharBuffer.wrap(chars, startCharIndex, cbLen), |
| 229 | ByteBuffer.wrap(bytes, startCharIndex * nBytes, bbLen), |
| 230 | true); |
| 231 | } catch (Exception e) { e.printStackTrace();} |
| 232 | |
| 233 | convertedGlyphs = new char[65536]; |
| 234 | for (int i=0; i<count; i++) { |
| 235 | if (nBytes == 1) { |
| 236 | convertedGlyphs[i+minU] = (char)(bytes[i]&0xff); |
| 237 | } else { |
| 238 | convertedGlyphs[i+minU] = |
| 239 | (char)(((bytes[i*2]&0xff) << 8) + (bytes[i*2+1]&0xff)); |
| 240 | } |
| 241 | } |
| 242 | } |
| 243 | |
| 244 | int max = (lowPartOnly) ? 128 : 256; |
| 245 | if (addAscii && convertedGlyphs.length >= 256) { |
| 246 | for (int i=0;i<max;i++) { |
| 247 | if (convertedGlyphs[i] == 0) { |
| 248 | convertedGlyphs[i] = (char)i; |
| 249 | } |
| 250 | } |
| 251 | } |
| 252 | } |
| 253 | } |