| /* |
| * 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.nio.cs.ext; |
| |
| import java.nio.ByteBuffer; |
| import java.nio.CharBuffer; |
| import java.nio.charset.Charset; |
| import java.nio.charset.CharsetDecoder; |
| import java.nio.charset.CharsetEncoder; |
| import java.nio.charset.CoderResult; |
| import sun.nio.cs.Surrogate; |
| |
| abstract class ISO2022 |
| extends Charset |
| { |
| |
| private static final byte ISO_ESC = 0x1b; |
| private static final byte ISO_SI = 0x0f; |
| private static final byte ISO_SO = 0x0e; |
| private static final byte ISO_SS2_7 = 0x4e; |
| private static final byte ISO_SS3_7 = 0x4f; |
| private static final byte MSB = (byte)0x80; |
| private static final char REPLACE_CHAR = '\uFFFD'; |
| private static final byte minDesignatorLength = 3; |
| |
| public ISO2022(String csname, String[] aliases) { |
| super(csname, aliases); |
| } |
| |
| public CharsetDecoder newDecoder() { |
| return new Decoder(this); |
| } |
| |
| public CharsetEncoder newEncoder() { |
| return new Encoder(this); |
| } |
| |
| protected static class Decoder extends CharsetDecoder { |
| |
| // Value to be filled by subclass |
| protected byte SODesig[][]; |
| protected byte SS2Desig[][] = null; |
| protected byte SS3Desig[][] = null; |
| |
| protected CharsetDecoder SODecoder[]; |
| protected CharsetDecoder SS2Decoder[] = null; |
| protected CharsetDecoder SS3Decoder[] = null; |
| |
| private static final byte SOFlag = 0; |
| private static final byte SS2Flag = 1; |
| private static final byte SS3Flag = 2; |
| |
| private int curSODes, curSS2Des, curSS3Des; |
| private boolean shiftout; |
| private CharsetDecoder tmpDecoder[]; |
| |
| protected Decoder(Charset cs) { |
| super(cs, 1.0f, 1.0f); |
| } |
| |
| protected void implReset() { |
| curSODes = 0; |
| curSS2Des = 0; |
| curSS3Des = 0; |
| shiftout = false; |
| } |
| |
| private char decode(byte byte1, byte byte2, byte shiftFlag) |
| { |
| byte1 |= MSB; |
| byte2 |= MSB; |
| |
| byte[] tmpByte = { byte1,byte2 }; |
| char[] tmpChar = new char[1]; |
| int i = 0, |
| tmpIndex = 0; |
| |
| switch(shiftFlag) { |
| case SOFlag: |
| tmpIndex = curSODes; |
| tmpDecoder = (CharsetDecoder [])SODecoder; |
| break; |
| case SS2Flag: |
| tmpIndex = curSS2Des; |
| tmpDecoder = (CharsetDecoder [])SS2Decoder; |
| break; |
| case SS3Flag: |
| tmpIndex = curSS3Des; |
| tmpDecoder = (CharsetDecoder [])SS3Decoder; |
| break; |
| } |
| |
| if (tmpDecoder != null) { |
| for(i = 0; i < tmpDecoder.length; i++) { |
| if(tmpIndex == i) { |
| try { |
| ByteBuffer bb = ByteBuffer.wrap(tmpByte,0,2); |
| CharBuffer cc = CharBuffer.wrap(tmpChar,0,1); |
| tmpDecoder[i].decode(bb, cc, true); |
| cc.flip(); |
| return cc.get(); |
| } catch (Exception e) {} |
| } |
| } |
| } |
| return REPLACE_CHAR; |
| } |
| |
| private int findDesig(byte[] in, int sp, int sl, byte[][] desigs) { |
| if (desigs == null) return -1; |
| int i = 0; |
| while (i < desigs.length) { |
| if (desigs[i] != null && sl - sp >= desigs[i].length) { |
| int j = 0; |
| while (j < desigs[i].length && in[sp+j] == desigs[i][j]) { j++; } |
| if (j == desigs[i].length) |
| return i; |
| } |
| i++; |
| } |
| return -1; |
| } |
| |
| private int findDesigBuf(ByteBuffer in, byte[][] desigs) { |
| if (desigs == null) return -1; |
| int i = 0; |
| while (i < desigs.length) { |
| if (desigs[i] != null && in.remaining() >= desigs[i].length) { |
| int j = 0; |
| in.mark(); |
| while (j < desigs[i].length && in.get() == desigs[i][j]) { j++; } |
| if (j == desigs[i].length) |
| return i; |
| in.reset(); |
| } |
| i++; |
| } |
| return -1; |
| } |
| |
| private CoderResult decodeArrayLoop(ByteBuffer src, |
| CharBuffer dst) |
| { |
| byte[] sa = src.array(); |
| int sp = src.arrayOffset() + src.position(); |
| int sl = src.arrayOffset() + src.limit(); |
| assert (sp <= sl); |
| sp = (sp <= sl ? sp : sl); |
| |
| char[] da = dst.array(); |
| int dp = dst.arrayOffset() + dst.position(); |
| int dl = dst.arrayOffset() + dst.limit(); |
| assert (dp <= dl); |
| dp = (dp <= dl ? dp : dl); |
| |
| int b1 = 0, b2 = 0, b3 = 0; |
| |
| try { |
| while (sp < sl) { |
| b1 = sa[sp] & 0xff; |
| int inputSize = 1; |
| switch (b1) { |
| case ISO_SO: |
| shiftout = true; |
| inputSize = 1; |
| break; |
| case ISO_SI: |
| shiftout = false; |
| inputSize = 1; |
| break; |
| case ISO_ESC: |
| if (sl - sp - 1 < minDesignatorLength) |
| return CoderResult.UNDERFLOW; |
| |
| int desig = findDesig(sa, sp + 1, sl, SODesig); |
| if (desig != -1) { |
| curSODes = desig; |
| inputSize = SODesig[desig].length + 1; |
| break; |
| } |
| desig = findDesig(sa, sp + 1, sl, SS2Desig); |
| if (desig != -1) { |
| curSS2Des = desig; |
| inputSize = SS2Desig[desig].length + 1; |
| break; |
| } |
| desig = findDesig(sa, sp + 1, sl, SS3Desig); |
| if (desig != -1) { |
| curSS3Des = desig; |
| inputSize = SS3Desig[desig].length + 1; |
| break; |
| } |
| if (sl - sp < 2) |
| return CoderResult.UNDERFLOW; |
| b1 = sa[sp + 1]; |
| switch(b1) { |
| case ISO_SS2_7: |
| if (sl - sp < 4) |
| return CoderResult.UNDERFLOW; |
| b2 = sa[sp +2]; |
| b3 = sa[sp +3]; |
| if (dl - dp <1) |
| return CoderResult.OVERFLOW; |
| da[dp] = decode((byte)b2, |
| (byte)b3, |
| SS2Flag); |
| dp++; |
| inputSize = 4; |
| break; |
| case ISO_SS3_7: |
| if (sl - sp < 4) |
| return CoderResult.UNDERFLOW; |
| b2 = sa[sp + 2]; |
| b3 = sa[sp + 3]; |
| if (dl - dp <1) |
| return CoderResult.OVERFLOW; |
| da[dp] = decode((byte)b2, |
| (byte)b3, |
| SS3Flag); |
| dp++; |
| inputSize = 4; |
| break; |
| default: |
| return CoderResult.malformedForLength(2); |
| } |
| break; |
| default: |
| if (dl - dp < 1) |
| return CoderResult.OVERFLOW; |
| if (!shiftout) { |
| da[dp++]=(char)(sa[sp] & 0xff); |
| } else { |
| if (dl - dp < 1) |
| return CoderResult.OVERFLOW; |
| if (sl - sp < 2) |
| return CoderResult.UNDERFLOW; |
| b2 = sa[sp+1] & 0xff; |
| da[dp++] = decode((byte)b1, |
| (byte)b2, |
| SOFlag); |
| inputSize = 2; |
| } |
| break; |
| } |
| sp += inputSize; |
| } |
| return CoderResult.UNDERFLOW; |
| } finally { |
| src.position(sp - src.arrayOffset()); |
| dst.position(dp - dst.arrayOffset()); |
| } |
| } |
| |
| private CoderResult decodeBufferLoop(ByteBuffer src, |
| CharBuffer dst) |
| { |
| int mark = src.position(); |
| int b1 = 0, b2 = 0, b3 = 0; |
| |
| try { |
| while (src.hasRemaining()) { |
| b1 = src.get(); |
| int inputSize = 1; |
| switch (b1) { |
| case ISO_SO: |
| shiftout = true; |
| break; |
| case ISO_SI: |
| shiftout = false; |
| break; |
| case ISO_ESC: |
| if (src.remaining() < minDesignatorLength) |
| return CoderResult.UNDERFLOW; |
| |
| int desig = findDesigBuf(src, SODesig); |
| if (desig != -1) { |
| curSODes = desig; |
| inputSize = SODesig[desig].length + 1; |
| break; |
| } |
| desig = findDesigBuf(src, SS2Desig); |
| if (desig != -1) { |
| curSS2Des = desig; |
| inputSize = SS2Desig[desig].length + 1; |
| break; |
| } |
| desig = findDesigBuf(src, SS3Desig); |
| if (desig != -1) { |
| curSS3Des = desig; |
| inputSize = SS3Desig[desig].length + 1; |
| break; |
| } |
| |
| if (src.remaining() < 1) |
| return CoderResult.UNDERFLOW; |
| b1 = src.get(); |
| switch(b1) { |
| case ISO_SS2_7: |
| if (src.remaining() < 2) |
| return CoderResult.UNDERFLOW; |
| b2 = src.get(); |
| b3 = src.get(); |
| if (dst.remaining() < 1) |
| return CoderResult.OVERFLOW; |
| dst.put(decode((byte)b2, |
| (byte)b3, |
| SS2Flag)); |
| inputSize = 4; |
| break; |
| case ISO_SS3_7: |
| if (src.remaining() < 2) |
| return CoderResult.UNDERFLOW; |
| b2 = src.get(); |
| b3 = src.get(); |
| if (dst.remaining() < 1) |
| return CoderResult.OVERFLOW; |
| dst.put(decode((byte)b2, |
| (byte)b3, |
| SS3Flag)); |
| inputSize = 4; |
| break; |
| default: |
| return CoderResult.malformedForLength(2); |
| } |
| break; |
| default: |
| if (dst.remaining() < 1) |
| return CoderResult.OVERFLOW; |
| if (!shiftout) { |
| dst.put((char)(b1 & 0xff)); |
| } else { |
| if (dst.remaining() < 1) |
| return CoderResult.OVERFLOW; |
| if (src.remaining() < 1) |
| return CoderResult.UNDERFLOW; |
| b2 = src.get() & 0xff; |
| dst.put(decode((byte)b1, |
| (byte)b2, |
| SOFlag)); |
| inputSize = 2; |
| } |
| break; |
| } |
| mark += inputSize; |
| } |
| return CoderResult.UNDERFLOW; |
| } catch (Exception e) { e.printStackTrace(); return CoderResult.OVERFLOW; } |
| finally { |
| src.position(mark); |
| } |
| } |
| |
| protected CoderResult decodeLoop(ByteBuffer src, |
| CharBuffer dst) |
| { |
| if (src.hasArray() && dst.hasArray()) |
| return decodeArrayLoop(src, dst); |
| else |
| return decodeBufferLoop(src, dst); |
| } |
| } |
| |
| protected static class Encoder extends CharsetEncoder { |
| private final Surrogate.Parser sgp = new Surrogate.Parser(); |
| public static final byte SS2 = (byte)0x8e; |
| public static final byte PLANE2 = (byte)0xA2; |
| public static final byte PLANE3 = (byte)0xA3; |
| private final byte MSB = (byte)0x80; |
| |
| protected final byte maximumDesignatorLength = 4; |
| |
| protected String SODesig, |
| SS2Desig = null, |
| SS3Desig = null; |
| |
| protected CharsetEncoder ISOEncoder; |
| |
| private boolean shiftout = false; |
| private boolean SODesDefined = false; |
| private boolean SS2DesDefined = false; |
| private boolean SS3DesDefined = false; |
| |
| private boolean newshiftout = false; |
| private boolean newSODesDefined = false; |
| private boolean newSS2DesDefined = false; |
| private boolean newSS3DesDefined = false; |
| |
| protected Encoder(Charset cs) { |
| super(cs, 4.0f, 8.0f); |
| } |
| |
| public boolean canEncode(char c) { |
| return (ISOEncoder.canEncode(c)); |
| } |
| |
| protected void implReset() { |
| shiftout = false; |
| SODesDefined = false; |
| SS2DesDefined = false; |
| SS3DesDefined = false; |
| } |
| |
| private int unicodeToNative(char unicode, byte ebyte[]) |
| { |
| int index = 0; |
| byte tmpByte[]; |
| char convChar[] = {unicode}; |
| byte convByte[] = new byte[4]; |
| int converted; |
| |
| try{ |
| CharBuffer cc = CharBuffer.wrap(convChar); |
| ByteBuffer bb = ByteBuffer.allocate(4); |
| ISOEncoder.encode(cc, bb, true); |
| bb.flip(); |
| converted = bb.remaining(); |
| bb.get(convByte,0,converted); |
| } catch(Exception e) { |
| return -1; |
| } |
| |
| if (converted == 2) { |
| if (!SODesDefined) { |
| newSODesDefined = true; |
| ebyte[0] = ISO_ESC; |
| tmpByte = SODesig.getBytes(); |
| System.arraycopy(tmpByte,0,ebyte,1,tmpByte.length); |
| index = tmpByte.length+1; |
| } |
| if (!shiftout) { |
| newshiftout = true; |
| ebyte[index++] = ISO_SO; |
| } |
| ebyte[index++] = (byte)(convByte[0] & 0x7f); |
| ebyte[index++] = (byte)(convByte[1] & 0x7f); |
| } else { |
| if(convByte[0] == SS2) { |
| if (convByte[1] == PLANE2) { |
| if (!SS2DesDefined) { |
| newSS2DesDefined = true; |
| ebyte[0] = ISO_ESC; |
| tmpByte = SS2Desig.getBytes(); |
| System.arraycopy(tmpByte, 0, ebyte, 1, tmpByte.length); |
| index = tmpByte.length+1; |
| } |
| ebyte[index++] = ISO_ESC; |
| ebyte[index++] = ISO_SS2_7; |
| ebyte[index++] = (byte)(convByte[2] & 0x7f); |
| ebyte[index++] = (byte)(convByte[3] & 0x7f); |
| } else if (convByte[1] == PLANE3) { |
| if(!SS3DesDefined){ |
| newSS3DesDefined = true; |
| ebyte[0] = ISO_ESC; |
| tmpByte = SS3Desig.getBytes(); |
| System.arraycopy(tmpByte, 0, ebyte, 1, tmpByte.length); |
| index = tmpByte.length+1; |
| } |
| ebyte[index++] = ISO_ESC; |
| ebyte[index++] = ISO_SS3_7; |
| ebyte[index++] = (byte)(convByte[2] & 0x7f); |
| ebyte[index++] = (byte)(convByte[3] & 0x7f); |
| } |
| } |
| } |
| return index; |
| } |
| |
| private CoderResult encodeArrayLoop(CharBuffer src, |
| ByteBuffer dst) |
| { |
| char[] sa = src.array(); |
| int sp = src.arrayOffset() + src.position(); |
| int sl = src.arrayOffset() + src.limit(); |
| assert (sp <= sl); |
| sp = (sp <= sl ? sp : sl); |
| byte[] da = dst.array(); |
| int dp = dst.arrayOffset() + dst.position(); |
| int dl = dst.arrayOffset() + dst.limit(); |
| assert (dp <= dl); |
| dp = (dp <= dl ? dp : dl); |
| |
| int outputSize = 0; |
| byte[] outputByte = new byte[8]; |
| newshiftout = shiftout; |
| newSODesDefined = SODesDefined; |
| newSS2DesDefined = SS2DesDefined; |
| newSS3DesDefined = SS3DesDefined; |
| |
| try { |
| while (sp < sl) { |
| char c = sa[sp]; |
| if (Character.isSurrogate(c)) { |
| if (sgp.parse(c, sa, sp, sl) < 0) |
| return sgp.error(); |
| return sgp.unmappableResult(); |
| } |
| |
| if (c < 0x80) { // ASCII |
| if (shiftout){ |
| newshiftout = false; |
| outputSize = 2; |
| outputByte[0] = ISO_SI; |
| outputByte[1] = (byte)(c & 0x7f); |
| } else { |
| outputSize = 1; |
| outputByte[0] = (byte)(c & 0x7f); |
| } |
| if(sa[sp] == '\n'){ |
| newSODesDefined = false; |
| newSS2DesDefined = false; |
| newSS3DesDefined = false; |
| } |
| } else { |
| outputSize = unicodeToNative(c, outputByte); |
| if (outputSize == 0) { |
| return CoderResult.unmappableForLength(1); |
| } |
| } |
| if (dl - dp < outputSize) |
| return CoderResult.OVERFLOW; |
| |
| for (int i = 0; i < outputSize; i++) |
| da[dp++] = outputByte[i]; |
| sp++; |
| shiftout = newshiftout; |
| SODesDefined = newSODesDefined; |
| SS2DesDefined = newSS2DesDefined; |
| SS3DesDefined = newSS3DesDefined; |
| } |
| return CoderResult.UNDERFLOW; |
| } finally { |
| src.position(sp - src.arrayOffset()); |
| dst.position(dp - dst.arrayOffset()); |
| } |
| } |
| |
| |
| private CoderResult encodeBufferLoop(CharBuffer src, |
| ByteBuffer dst) |
| { |
| int outputSize = 0; |
| byte[] outputByte = new byte[8]; |
| int inputSize = 0; // Size of input |
| newshiftout = shiftout; |
| newSODesDefined = SODesDefined; |
| newSS2DesDefined = SS2DesDefined; |
| newSS3DesDefined = SS3DesDefined; |
| int mark = src.position(); |
| |
| try { |
| while (src.hasRemaining()) { |
| char inputChar = src.get(); |
| if (Character.isSurrogate(inputChar)) { |
| if (sgp.parse(inputChar, src) < 0) |
| return sgp.error(); |
| return sgp.unmappableResult(); |
| } |
| if (inputChar < 0x80) { // ASCII |
| if (shiftout){ |
| newshiftout = false; |
| outputSize = 2; |
| outputByte[0] = ISO_SI; |
| outputByte[1] = (byte)(inputChar & 0x7f); |
| } else { |
| outputSize = 1; |
| outputByte[0] = (byte)(inputChar & 0x7f); |
| } |
| if(inputChar == '\n'){ |
| newSODesDefined = false; |
| newSS2DesDefined = false; |
| newSS3DesDefined = false; |
| } |
| } else { |
| outputSize = unicodeToNative(inputChar, outputByte); |
| if (outputSize == 0) { |
| return CoderResult.unmappableForLength(1); |
| } |
| } |
| |
| if (dst.remaining() < outputSize) |
| return CoderResult.OVERFLOW; |
| for (int i = 0; i < outputSize; i++) |
| dst.put(outputByte[i]); |
| mark++; |
| shiftout = newshiftout; |
| SODesDefined = newSODesDefined; |
| SS2DesDefined = newSS2DesDefined; |
| SS3DesDefined = newSS3DesDefined; |
| } |
| return CoderResult.UNDERFLOW; |
| } finally { |
| src.position(mark); |
| } |
| } |
| |
| protected CoderResult encodeLoop(CharBuffer src, |
| ByteBuffer dst) |
| { |
| if (src.hasArray() && dst.hasArray()) |
| return encodeArrayLoop(src, dst); |
| else |
| return encodeBufferLoop(src, dst); |
| } |
| } |
| } |
