--- /dev/null 2015-01-05 10:07:41.260039832 -0800 +++ new/src/java.desktop/unix/classes/sun/awt/motif/DoubleByteEncoder.java 2015-02-19 16:13:15.629548296 -0800 @@ -0,0 +1,237 @@ +/* + * Copyright (c) 2002, 2006, 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.awt.motif; + +import java.nio.ByteBuffer; +import java.nio.CharBuffer; +import java.nio.charset.Charset; +import java.nio.charset.CharsetEncoder; +import java.nio.charset.CoderResult; + +public abstract class DoubleByteEncoder + extends CharsetEncoder +{ + + private short index1[]; + private String index2[]; + + private final SurrogateParser sgp = new SurrogateParser(); + + protected DoubleByteEncoder(Charset cs, + short[] index1, String[] index2) + { + super(cs, 2.0f, 2.0f); + this.index1 = index1; + this.index2 = index2; + } + + protected DoubleByteEncoder(Charset cs, + short[] index1, String[] index2, + float avg, float max) + { + super(cs, avg, max); + this.index1 = index1; + this.index2 = index2; + } + + protected DoubleByteEncoder(Charset cs, + short[] index1, String[] index2, byte[] repl) + { + super(cs, 2.0f, 2.0f, repl); + this.index1 = index1; + this.index2 = index2; + } + + + protected DoubleByteEncoder(Charset cs, + short[] index1, String[] index2, + byte[] repl, float avg, float max) + { + super(cs, avg, max,repl); + this.index1 = index1; + this.index2 = index2; + } + + public boolean canEncode(char c) { + return (encodeSingle(c) != -1 || + encodeDouble(c) != 0); + } + + private CoderResult encodeArrayLoop(CharBuffer src, ByteBuffer dst) { + char[] sa = src.array(); + int sp = src.arrayOffset() + src.position(); + int sl = src.arrayOffset() + src.limit(); + byte[] da = dst.array(); + int dp = dst.arrayOffset() + dst.position(); + int dl = dst.arrayOffset() + dst.limit(); + + try { + while (sp < sl) { + char c = sa[sp]; + if (Character.isSurrogate(c)) { + if (sgp.parse(c, sa, sp, sl) < 0) + return sgp.error(); + if (sl - sp < 2) + return CoderResult.UNDERFLOW; + char c2 = sa[sp + 1]; + + byte[] outputBytes = new byte[2]; + outputBytes = encodeSurrogate(c, c2); + + if (outputBytes == null) { + return sgp.unmappableResult(); + } + else { + if (dl - dp < 2) + return CoderResult.OVERFLOW; + da[dp++] = outputBytes[0]; + da[dp++] = outputBytes[1]; + sp += 2; + continue; + } + } + if (c >= '\uFFFE') + return CoderResult.unmappableForLength(1); + + int b = encodeSingle(c); + if (b != -1) { // Single Byte + if (dl - dp < 1) + return CoderResult.OVERFLOW; + da[dp++] = (byte)b; + sp++; + continue; + } + + int ncode = encodeDouble(c); + if (ncode != 0 && c != '\u0000' ) { + if (dl - dp < 2) + return CoderResult.OVERFLOW; + da[dp++] = (byte) ((ncode & 0xff00) >> 8); + da[dp++] = (byte) (ncode & 0xff); + sp++; + continue; + } + return CoderResult.unmappableForLength(1); + } + return CoderResult.UNDERFLOW; + } finally { + src.position(sp - src.arrayOffset()); + dst.position(dp - dst.arrayOffset()); + } + } + + private CoderResult encodeBufferLoop(CharBuffer src, ByteBuffer dst) { + int mark = src.position(); + + try { + while (src.hasRemaining()) { + char c = src.get(); + if (Character.isSurrogate(c)) { + int surr; + if ((surr = sgp.parse(c, src)) < 0) + return sgp.error(); + char c2 = Character.lowSurrogate(surr); + byte[] outputBytes = new byte[2]; + outputBytes = encodeSurrogate(c, c2); + + if (outputBytes == null) { + return sgp.unmappableResult(); + } else { + if (dst.remaining() < 2) + return CoderResult.OVERFLOW; + mark += 2; + dst.put(outputBytes[0]); + dst.put(outputBytes[1]); + continue; + } + } + if (c >= '\uFFFE') + return CoderResult.unmappableForLength(1); + int b = encodeSingle(c); + + if (b != -1) { // Single-byte character + if (dst.remaining() < 1) + return CoderResult.OVERFLOW; + mark++; + dst.put((byte)b); + continue; + } + // Double Byte character + + int ncode = encodeDouble(c); + if (ncode != 0 && c != '\u0000') { + if (dst.remaining() < 2) + return CoderResult.OVERFLOW; + mark++; + dst.put((byte) ((ncode & 0xff00) >> 8)); + dst.put((byte) ncode); + continue; + } + return CoderResult.unmappableForLength(1); + } + + return CoderResult.UNDERFLOW; + } finally { + src.position(mark); + } + } + + protected CoderResult encodeLoop(CharBuffer src, ByteBuffer dst) { + if (true && src.hasArray() && dst.hasArray()) + return encodeArrayLoop(src, dst); + else + return encodeBufferLoop(src, dst); + } + + /* + * Can be changed by subclass + */ + protected int encodeDouble(char ch) { + int offset = index1[((ch & 0xff00) >> 8 )] << 8; + return index2[offset >> 12].charAt((offset & 0xfff) + (ch & 0xff)); + } + + /* + * Can be changed by subclass + */ + protected int encodeSingle(char inputChar) { + if (inputChar < 0x80) + return (byte)inputChar; + else + return -1; + } + + /** + * Protected method which should be overridden by concrete DBCS + * CharsetEncoder classes which included supplementary characters + * within their mapping coverage. + * null return value indicates surrogate values could not be + * handled or encoded. + */ + protected byte[] encodeSurrogate(char highSurrogate, char lowSurrogate) { + return null; + } +}