Showing the changes to java/pkg/sun/io/CharToByteISO2022.java (1 of 18352 files). Show all
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| 1 | +/* | |
| 2 | + * Copyright (c) 1997, 2000, Oracle and/or its affiliates. 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. Oracle designates this | |
| 8 | + * particular file as subject to the "Classpath" exception as provided | |
| 9 | + * by Oracle 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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA | |
| 22 | + * or visit www.oracle.com if you need additional information or have any | |
| 23 | + * questions. | |
| 24 | + */ | |
| 25 | + | |
| 26 | +package sun.io; | |
| 27 | + | |
| 28 | +/** | |
| 29 | +* @author Tom Zhou | |
| 30 | +*/ | |
| 31 | + | |
| 32 | +public abstract class CharToByteISO2022 extends CharToByteConverter | |
| 33 | +{ | |
| 34 | + private final byte ISO_ESC = 0x1b; | |
| 35 | + private final byte ISO_SI = 0x0f; | |
| 36 | + private final byte ISO_SO = 0x0e; | |
| 37 | + private final byte ISO_SS2_7 = 0x4e; | |
| 38 | + private final byte ISO_SS3_7 = 0x4f; | |
| 39 | + private final byte SS2 = (byte)0x8e; | |
| 40 | + private final byte P2 = (byte)0xA2; | |
| 41 | + private final byte P3 = (byte)0xA3; | |
| 42 | + private final byte MSB = (byte)0x80; | |
| 43 | + | |
| 44 | + protected final byte maximumDesignatorLength = 4; | |
| 45 | + | |
| 46 | + protected String SODesignator, | |
| 47 | + SS2Designator = null, | |
| 48 | + SS3Designator = null; | |
| 49 | + | |
| 50 | + protected CharToByteConverter codeConverter; | |
| 51 | + | |
| 52 | + private boolean shiftout = false; | |
| 53 | + private boolean SODesDefined = false; | |
| 54 | + private boolean SS2DesDefined = false; | |
| 55 | + private boolean SS3DesDefined = false; | |
| 56 | + | |
| 57 | + private boolean newshiftout = false; | |
| 58 | + private boolean newSODesDefined = false; | |
| 59 | + private boolean newSS2DesDefined = false; | |
| 60 | + private boolean newSS3DesDefined = false; | |
| 61 | + | |
| 62 | + public int flush(byte[] output, int outStart, int outEnd) | |
| 63 | + throws MalformedInputException | |
| 64 | + { | |
| 65 | + reset(); | |
| 66 | + return 0; | |
| 67 | + } | |
| 68 | + | |
| 69 | + public void reset() { | |
| 70 | + shiftout = false; | |
| 71 | + SODesDefined = false; | |
| 72 | + SS2DesDefined = false; | |
| 73 | + SS3DesDefined = false; | |
| 74 | + byteOff = charOff = 0; | |
| 75 | + } | |
| 76 | + | |
| 77 | + public boolean canConvert(char ch) | |
| 78 | + { | |
| 79 | + if (ch<0x80) | |
| 80 | + return true; | |
| 81 | + return codeConverter.canConvert(ch); | |
| 82 | + } | |
| 83 | + | |
| 84 | + private int unicodeToNative(char unicode, byte ebyte[]) | |
| 85 | + { | |
| 86 | + int index = 0; | |
| 87 | + byte tmpByte[]; | |
| 88 | + byte convByte[] = new byte[codeConverter.getMaxBytesPerChar()]; | |
| 89 | + char convChar[] = {unicode}; | |
| 90 | + int converted; | |
| 91 | + | |
| 92 | + try{ | |
| 93 | + converted = codeConverter.convert(convChar, 0, 1, convByte, 0, | |
| 94 | + codeConverter.getMaxBytesPerChar()); | |
| 95 | + } catch(Exception e) { | |
| 96 | + return -1; | |
| 97 | + } | |
| 98 | + | |
| 99 | + if (converted == 2) { | |
| 100 | + if (!SODesDefined) { | |
| 101 | + newSODesDefined = true; | |
| 102 | + ebyte[0] = ISO_ESC; | |
| 103 | + tmpByte = SODesignator.getBytes(); | |
| 104 | + System.arraycopy(tmpByte,0,ebyte,1,tmpByte.length); | |
| 105 | + index = tmpByte.length+1; | |
| 106 | + } | |
| 107 | + if (!shiftout) { | |
| 108 | + newshiftout = true; | |
| 109 | + ebyte[index++] = ISO_SO; | |
| 110 | + } | |
| 111 | + ebyte[index++] = (byte)(convByte[0]&0x7f); | |
| 112 | + ebyte[index++] = (byte)(convByte[1]&0x7f); | |
| 113 | + } else { | |
| 114 | + if((convByte[0] == SS2)&&(convByte[1] == P2)) { | |
| 115 | + if (!SS2DesDefined) { | |
| 116 | + newSS2DesDefined = true; | |
| 117 | + ebyte[0] = ISO_ESC; | |
| 118 | + tmpByte = SS2Designator.getBytes(); | |
| 119 | + System.arraycopy(tmpByte,0,ebyte,1,tmpByte.length); | |
| 120 | + index = tmpByte.length+1; | |
| 121 | + } | |
| 122 | + ebyte[index++] = ISO_ESC; | |
| 123 | + ebyte[index++] = ISO_SS2_7; | |
| 124 | + ebyte[index++] = (byte)(convByte[2]&0x7f); | |
| 125 | + ebyte[index++] = (byte)(convByte[3]&0x7f); | |
| 126 | + } | |
| 127 | + if((convByte[0] == SS2)&&(convByte[1] == 0xA3)) | |
| 128 | + { | |
| 129 | + if(!SS3DesDefined){ | |
| 130 | + newSS3DesDefined = true; | |
| 131 | + ebyte[0] = ISO_ESC; | |
| 132 | + tmpByte = SS3Designator.getBytes(); | |
| 133 | + System.arraycopy(tmpByte,0,ebyte,1,tmpByte.length); | |
| 134 | + index = tmpByte.length+1; | |
| 135 | + } | |
| 136 | + ebyte[index++] = ISO_ESC; | |
| 137 | + ebyte[index++] = ISO_SS3_7; | |
| 138 | + ebyte[index++] = (byte)(convByte[2]&0x7f); | |
| 139 | + ebyte[index++] = (byte)(convByte[3]&0x7f); | |
| 140 | + } | |
| 141 | + } | |
| 142 | + return index; | |
| 143 | + } | |
| 144 | + | |
| 145 | + /** | |
| 146 | + * Character conversion | |
| 147 | + */ | |
| 148 | + public int convert(char[] input, int inOff, int inEnd, | |
| 149 | + byte[] output, int outOff, int outEnd) | |
| 150 | + throws UnknownCharacterException, MalformedInputException, | |
| 151 | + ConversionBufferFullException | |
| 152 | + { | |
| 153 | + int outputSize; | |
| 154 | + byte [] tmpbuf = new byte[this.getMaxBytesPerChar()]; | |
| 155 | + byte [] outputByte; | |
| 156 | + | |
| 157 | + byteOff = outOff; | |
| 158 | + | |
| 159 | + newshiftout = shiftout; | |
| 160 | + newSODesDefined = SODesDefined; | |
| 161 | + newSS2DesDefined = SS2DesDefined; | |
| 162 | + newSS3DesDefined = SS3DesDefined; | |
| 163 | + | |
| 164 | + //Fixed 4122961 by bringing the charOff++ out to this | |
| 165 | + // loop where it belongs, changing the loop from | |
| 166 | + // while(){} to for(){}. | |
| 167 | + for (charOff = inOff; charOff < inEnd; charOff++) { | |
| 168 | + outputByte = tmpbuf; | |
| 169 | + if (input[charOff] < 0x80) { // ASCII | |
| 170 | + if (shiftout){ | |
| 171 | + newshiftout = false; | |
| 172 | + outputSize = 2; | |
| 173 | + outputByte[0] = ISO_SI; | |
| 174 | + outputByte[1] = (byte)(input[charOff] & 0x7f); | |
| 175 | + } else { | |
| 176 | + outputSize = 1; | |
| 177 | + outputByte[0] = (byte)(input[charOff] & 0x7f); | |
| 178 | + } | |
| 179 | + if(input[charOff] == '\n'){ | |
| 180 | + newSODesDefined = false; | |
| 181 | + newSS2DesDefined = false; | |
| 182 | + newSS3DesDefined = false; | |
| 183 | + } | |
| 184 | + } else { | |
| 185 | + outputSize = unicodeToNative(input[charOff], outputByte); | |
| 186 | + } | |
| 187 | + | |
| 188 | + if (outputSize == -1) { | |
| 189 | + if (subMode) { | |
| 190 | + if(!newSODesDefined){ | |
| 191 | + newSODesDefined = !newSODesDefined; | |
| 192 | + outputByte[0] = ISO_SO; | |
| 193 | + outputByte[1] = (byte)'?'; | |
| 194 | + outputSize = 2; | |
| 195 | + } else { | |
| 196 | + outputByte = subBytes; | |
| 197 | + outputSize = subBytes.length; | |
| 198 | + } | |
| 199 | + } else { | |
| 200 | + badInputLength = 1; | |
| 201 | + throw new UnknownCharacterException(); | |
| 202 | + } | |
| 203 | + } | |
| 204 | + | |
| 205 | + if (outEnd - byteOff < outputSize) | |
| 206 | + throw new ConversionBufferFullException(); | |
| 207 | + | |
| 208 | + for (int i = 0; i < outputSize; i++) | |
| 209 | + output[byteOff++] = outputByte[i]; | |
| 210 | + | |
| 211 | + // Bug 4266772. Update statuses only when output buffer has been | |
| 212 | + // updated. When ConversionBufferFullException() has been throwed | |
| 213 | + // we want to keep old statuses for next call. | |
| 214 | + shiftout = newshiftout; | |
| 215 | + SODesDefined = newSODesDefined; | |
| 216 | + SS2DesDefined = newSS2DesDefined; | |
| 217 | + SS3DesDefined = newSS3DesDefined; | |
| 218 | + } | |
| 219 | + return byteOff - outOff; | |
| 220 | + } | |
| 221 | +} | |