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/*
* Copyright (c) 2003, 2014, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation. Oracle designates this
* particular file as subject to the "Classpath" exception as provided
* by Oracle in the LICENSE file that accompanied this code.
*
* This code 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 General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
package sun.font;
import java.awt.FontFormatException;
import java.awt.font.FontRenderContext;
import java.awt.geom.GeneralPath;
import java.awt.geom.Rectangle2D;
import java.util.HashMap;
import java.util.Locale;
import java.nio.charset.*;
import java.nio.CharBuffer;
import java.nio.ByteBuffer;
class XMap {
private static HashMap<String, XMap> xMappers = new HashMap<>();
/* ConvertedGlyphs has unicode code points as indexes and values
* are platform-encoded multi-bytes chars packed into java chars.
* These platform-encoded characters are equated to glyph ids, although
* that's not strictly true, as X11 only supports using chars.
* The assumption carried over from the native implementation that
* a char is big enough to hold an X11 glyph id (ie platform char).
*/
char[] convertedGlyphs;
static synchronized XMap getXMapper(String encoding) {
XMap mapper = xMappers.get(encoding);
if (mapper == null) {
mapper = getXMapperInternal(encoding);
xMappers.put(encoding, mapper);
}
return mapper;
}
static final int SINGLE_BYTE = 1;
static final int DOUBLE_BYTE = 2;
private static XMap getXMapperInternal(String encoding) {
String jclass = null;
int nBytes = SINGLE_BYTE;
int maxU = 0xffff;
int minU = 0;
boolean addAscii = false;
boolean lowPartOnly = false;
if (encoding.equals("dingbats")) {
jclass = "sun.font.X11Dingbats";
minU = 0x2701;
maxU = 0x27be;
} else if (encoding.equals("symbol")){
jclass = "sun.awt.Symbol";
minU = 0x0391;
maxU = 0x22ef;
} else if (encoding.equals("iso8859-1")) {
maxU = 0xff;
} else if (encoding.equals("iso8859-2")) {
jclass = "ISO8859_2";
} else if (encoding.equals("jisx0208.1983-0")) {
jclass = "JIS0208";
nBytes = DOUBLE_BYTE;
} else if (encoding.equals("jisx0201.1976-0")) {
jclass = "JIS0201";
// this is mapping the latin supplement range 128->255 which
// doesn't exist in JIS0201. This needs examination.
// it was also overwriting a couple of the mappings of
// 7E and A5 which in JIS201 are different chars than in
// Latin 1. I have revised AddAscii to not overwrite chars
// which are already converted.
addAscii = true;
lowPartOnly = true;
} else if (encoding.equals("jisx0212.1990-0")) {
jclass = "JIS0212";
nBytes = DOUBLE_BYTE;
} else if (encoding.equals("iso8859-4")) {
jclass = "ISO8859_4";
} else if (encoding.equals("iso8859-5")) {
jclass = "ISO8859_5";
} else if (encoding.equals("koi8-r")) {
jclass = "KOI8_R";
} else if (encoding.equals("ansi-1251")) {
jclass = "windows-1251";
} else if (encoding.equals("iso8859-6")) {
jclass = "ISO8859_6";
} else if (encoding.equals("iso8859-7")) {
jclass = "ISO8859_7";
} else if (encoding.equals("iso8859-8")) {
jclass = "ISO8859_8";
} else if (encoding.equals("iso8859-9")) {
jclass = "ISO8859_9";
} else if (encoding.equals("iso8859-13")) {
jclass = "ISO8859_13";
} else if (encoding.equals("iso8859-15")) {
jclass = "ISO8859_15";
} else if (encoding.equals("ksc5601.1987-0")) {
jclass ="sun.font.X11KSC5601";
nBytes = DOUBLE_BYTE;
} else if (encoding.equals( "ksc5601.1992-3")) {
jclass ="sun.font.X11Johab";
nBytes = DOUBLE_BYTE;
} else if (encoding.equals( "ksc5601.1987-1")) {
jclass ="EUC_KR";
nBytes = DOUBLE_BYTE;
} else if (encoding.equals( "cns11643-1")) {
jclass = "sun.font.X11CNS11643P1";
nBytes = DOUBLE_BYTE;
} else if (encoding.equals("cns11643-2")) {
jclass = "sun.font.X11CNS11643P2";
nBytes = DOUBLE_BYTE;
} else if (encoding.equals("cns11643-3")) {
jclass = "sun.font.X11CNS11643P3";
nBytes = DOUBLE_BYTE;
} else if (encoding.equals("gb2312.1980-0")) {
jclass = "sun.font.X11GB2312";
nBytes = DOUBLE_BYTE;
} else if (encoding.indexOf("big5") >= 0) {
jclass = "Big5";
nBytes = DOUBLE_BYTE;
addAscii = true;
} else if (encoding.equals("tis620.2533-0")) {
jclass = "TIS620";
} else if (encoding.equals("gbk-0")) {
jclass = "sun.font.X11GBK";
nBytes = DOUBLE_BYTE;
} else if (encoding.indexOf("sun.unicode-0") >= 0) {
jclass = "sun.font.X11SunUnicode_0";
nBytes = DOUBLE_BYTE;
} else if (encoding.indexOf("gb18030.2000-1") >= 0) {
jclass = "sun.font.X11GB18030_1";
nBytes = DOUBLE_BYTE;
} else if (encoding.indexOf( "gb18030.2000-0") >= 0) {
jclass = "sun.font.X11GB18030_0";
nBytes = DOUBLE_BYTE;
} else if (encoding.indexOf("hkscs") >= 0) {
jclass = "MS950_HKSCS_XP";
nBytes = DOUBLE_BYTE;
}
return new XMap(jclass, minU, maxU, nBytes, addAscii, lowPartOnly);
}
private static final char SURR_MIN = '\uD800';
private static final char SURR_MAX = '\uDFFF';
private XMap(String className, int minU, int maxU, int nBytes,
boolean addAscii, boolean lowPartOnly) {
CharsetEncoder enc = null;
if (className != null) {
try {
if (className.startsWith("sun.awt")) {
enc = ((Charset)Class.forName(className).getDeclaredConstructor().
newInstance()).newEncoder();
} else {
enc = Charset.forName(className).newEncoder();
}
} catch (Exception x) {x.printStackTrace();}
}
if (enc == null) {
convertedGlyphs = new char[256];
for (int i=0; i<256; i++) {
convertedGlyphs[i] = (char)i;
}
return;
} else {
/* chars is set to the unicode values to convert,
* bytes is where the X11 character codes will be output.
* Finally we pack the byte pairs into chars.
*/
int count = maxU - minU + 1;
byte[] bytes = new byte[count*nBytes];
char[] chars = new char[count];
for (int i=0; i<count; i++) {
chars[i] = (char)(minU+i);
}
int startCharIndex = 0;
/* For multi-byte encodings, single byte chars should be skipped */
if (nBytes > SINGLE_BYTE && minU < 256) {
startCharIndex = 256-minU;
}
byte[] rbytes = new byte[nBytes];
try {
int cbLen = 0;
int bbLen = 0;
// Since we don't support surrogates in any X11 encoding, skip
// the surrogate area, otherwise the sequence of "Oxdbff0xdc00"
// will accidently cause the surrogate-aware nio charset to treat
// them as a legal pair and then undesirablly skip 2 "chars"
// for one "unmappable character"
if (startCharIndex < SURR_MIN && startCharIndex + count >SURR_MAX) {
cbLen = SURR_MIN - startCharIndex;
bbLen = cbLen * nBytes;
enc.onMalformedInput(CodingErrorAction.REPLACE)
.onUnmappableCharacter(CodingErrorAction.REPLACE)
.replaceWith(rbytes)
.encode(CharBuffer.wrap(chars, startCharIndex, cbLen),
ByteBuffer.wrap(bytes, startCharIndex * nBytes, bbLen),
true);
startCharIndex = SURR_MAX + 1;
}
cbLen = count - startCharIndex;
bbLen = cbLen * nBytes;
enc.onMalformedInput(CodingErrorAction.REPLACE)
.onUnmappableCharacter(CodingErrorAction.REPLACE)
.replaceWith(rbytes)
.encode(CharBuffer.wrap(chars, startCharIndex, cbLen),
ByteBuffer.wrap(bytes, startCharIndex * nBytes, bbLen),
true);
} catch (Exception e) { e.printStackTrace();}
convertedGlyphs = new char[65536];
for (int i=0; i<count; i++) {
if (nBytes == 1) {
convertedGlyphs[i+minU] = (char)(bytes[i]&0xff);
} else {
convertedGlyphs[i+minU] =
(char)(((bytes[i*2]&0xff) << 8) + (bytes[i*2+1]&0xff));
}
}
}
int max = (lowPartOnly) ? 128 : 256;
if (addAscii && convertedGlyphs.length >= 256) {
for (int i=0;i<max;i++) {
if (convertedGlyphs[i] == 0) {
convertedGlyphs[i] = (char)i;
}
}
}
}
}
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