/* * Copyright (c) 1996, 2010, 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.io;/** * UCS Transformation Format 8 (UTF-8) -> UCS2 (UTF16) converter * * see CharToByteUTF8.java about UTF-8 format */public class ByteToCharUTF8 extends ByteToCharConverter { private int savedSize; private byte[] savedBytes; public ByteToCharUTF8() { super(); savedSize = 0; savedBytes = new byte[5]; } public int flush(char[] output, int outStart, int outEnd) throws MalformedInputException { if (savedSize != 0) { savedSize = 0; badInputLength = 0; throw new MalformedInputException(); } byteOff = charOff = 0; return 0; } /** * Character converson */ public int convert(byte[] input, int inOff, int inEnd, char[] output, int outOff, int outEnd) throws MalformedInputException, ConversionBufferFullException { int byte1, byte2, byte3, byte4; char[] outputChar = new char[2]; int outputSize; int byteOffAdjustment = 0; if (savedSize != 0) { byte[] newBuf; newBuf = new byte[inEnd - inOff + savedSize]; for (int i = 0; i < savedSize; i++) { newBuf[i] = savedBytes[i]; } System.arraycopy(input, inOff, newBuf, savedSize, inEnd - inOff); input = newBuf; inOff = 0; inEnd = newBuf.length; byteOffAdjustment = -savedSize; savedSize = 0; } charOff = outOff; byteOff = inOff; int startByteOff; while(byteOff < inEnd) { startByteOff = byteOff; byte1 = input[byteOff++] & 0xff; if ((byte1 & 0x80) == 0){ outputChar[0] = (char)byte1; outputSize = 1; } else if ((byte1 & 0xe0) == 0xc0) { if (byteOff >= inEnd) { savedSize = 1; savedBytes[0] = (byte)byte1; break; } byte2 = input[byteOff++] & 0xff; if ((byte2 & 0xc0) != 0x80) { badInputLength = 2; byteOff += byteOffAdjustment; throw new MalformedInputException(); } outputChar[0] = (char)(((byte1 & 0x1f) << 6) | (byte2 & 0x3f)); outputSize = 1; } else if ((byte1 & 0xf0) == 0xe0){ if (byteOff + 1 >= inEnd) { savedBytes[0] = (byte)byte1; if (byteOff >= inEnd) { savedSize = 1; } else { savedSize = 2; savedBytes[1] = input[byteOff++]; } break; } byte2 = input[byteOff++] & 0xff; byte3 = input[byteOff++] & 0xff; if ((byte2 & 0xc0) != 0x80 || (byte3 & 0xc0) != 0x80) { badInputLength = 3; byteOff += byteOffAdjustment; throw new MalformedInputException(); } outputChar[0] = (char)(((byte1 & 0x0f) << 12) | ((byte2 & 0x3f) << 6) | (byte3 & 0x3f)); outputSize = 1; } else if ((byte1 & 0xf8) == 0xf0) { if (byteOff + 2 >= inEnd) { savedBytes[0] = (byte)byte1; if (byteOff >= inEnd) { savedSize = 1; } else if (byteOff + 1 >= inEnd) { savedSize = 2; savedBytes[1] = input[byteOff++]; } else { savedSize = 3; savedBytes[1] = input[byteOff++]; savedBytes[2] = input[byteOff++]; } break; } byte2 = input[byteOff++] & 0xff; byte3 = input[byteOff++] & 0xff; byte4 = input[byteOff++] & 0xff; if ((byte2 & 0xc0) != 0x80 || (byte3 & 0xc0) != 0x80 || (byte4 & 0xc0) != 0x80) { badInputLength = 4; byteOff += byteOffAdjustment; throw new MalformedInputException(); } // this byte sequence is UTF16 character int ucs4 = (0x07 & byte1) << 18 | (0x3f & byte2) << 12 | (0x3f & byte3) << 6 | (0x3f & byte4); outputChar[0] = (char)((ucs4 - 0x10000) / 0x400 + 0xd800); outputChar[1] = (char)((ucs4 - 0x10000) % 0x400 + 0xdc00); outputSize = 2; } else { badInputLength = 1; byteOff += byteOffAdjustment; throw new MalformedInputException(); } if (charOff + outputSize > outEnd) { byteOff = startByteOff; byteOff += byteOffAdjustment; throw new ConversionBufferFullException(); } for (int i = 0; i < outputSize; i++) { output[charOff + i] = outputChar[i]; } charOff += outputSize; } byteOff += byteOffAdjustment; return charOff - outOff; } /* * Return the character set id */ public String getCharacterEncoding() { return "UTF8"; } /* * Reset after finding bad input */ public void reset() { byteOff = charOff = 0; savedSize = 0; }}
/*
* Copyright (c) 1996, 2010, 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.io;
/**
* UCS Transformation Format 8 (UTF-8) -> UCS2 (UTF16) converter
*
* see CharToByteUTF8.java about UTF-8 format
*/
public class ByteToCharUTF8 extends ByteToCharConverter {
private int savedSize;
private byte[] savedBytes;
public ByteToCharUTF8() {
super();
savedSize = 0;
savedBytes = new byte[5];
}
public int flush(char[] output, int outStart, int outEnd)
throws MalformedInputException
{
if (savedSize != 0) {
savedSize = 0;
badInputLength = 0;
throw new MalformedInputException();
}
byteOff = charOff = 0;
return 0;
}
/**
* Character converson
*/
public int convert(byte[] input, int inOff, int inEnd,
char[] output, int outOff, int outEnd)
throws MalformedInputException, ConversionBufferFullException
{
int byte1, byte2, byte3, byte4;
char[] outputChar = new char[2];
int outputSize;
int byteOffAdjustment = 0;
if (savedSize != 0) {
byte[] newBuf;
newBuf = new byte[inEnd - inOff + savedSize];
for (int i = 0; i < savedSize; i++) {
newBuf[i] = savedBytes[i];
}
System.arraycopy(input, inOff, newBuf, savedSize, inEnd - inOff);
input = newBuf;
inOff = 0;
inEnd = newBuf.length;
byteOffAdjustment = -savedSize;
savedSize = 0;
}
charOff = outOff;
byteOff = inOff;
int startByteOff;
while(byteOff < inEnd) {
startByteOff = byteOff;
byte1 = input[byteOff++] & 0xff;
if ((byte1 & 0x80) == 0){
outputChar[0] = (char)byte1;
outputSize = 1;
} else if ((byte1 & 0xe0) == 0xc0) {
if (byteOff >= inEnd) {
savedSize = 1;
savedBytes[0] = (byte)byte1;
break;
}
byte2 = input[byteOff++] & 0xff;
if ((byte2 & 0xc0) != 0x80) {
badInputLength = 2;
byteOff += byteOffAdjustment;
throw new MalformedInputException();
}
outputChar[0] = (char)(((byte1 & 0x1f) << 6) | (byte2 & 0x3f));
outputSize = 1;
} else if ((byte1 & 0xf0) == 0xe0){
if (byteOff + 1 >= inEnd) {
savedBytes[0] = (byte)byte1;
if (byteOff >= inEnd) {
savedSize = 1;
} else {
savedSize = 2;
savedBytes[1] = input[byteOff++];
}
break;
}
byte2 = input[byteOff++] & 0xff;
byte3 = input[byteOff++] & 0xff;
if ((byte2 & 0xc0) != 0x80 || (byte3 & 0xc0) != 0x80) {
badInputLength = 3;
byteOff += byteOffAdjustment;
throw new MalformedInputException();
}
outputChar[0] = (char)(((byte1 & 0x0f) << 12)
| ((byte2 & 0x3f) << 6)
| (byte3 & 0x3f));
outputSize = 1;
} else if ((byte1 & 0xf8) == 0xf0) {
if (byteOff + 2 >= inEnd) {
savedBytes[0] = (byte)byte1;
if (byteOff >= inEnd) {
savedSize = 1;
} else if (byteOff + 1 >= inEnd) {
savedSize = 2;
savedBytes[1] = input[byteOff++];
} else {
savedSize = 3;
savedBytes[1] = input[byteOff++];
savedBytes[2] = input[byteOff++];
}
break;
}
byte2 = input[byteOff++] & 0xff;
byte3 = input[byteOff++] & 0xff;
byte4 = input[byteOff++] & 0xff;
if ((byte2 & 0xc0) != 0x80 ||
(byte3 & 0xc0) != 0x80 ||
(byte4 & 0xc0) != 0x80) {
badInputLength = 4;
byteOff += byteOffAdjustment;
throw new MalformedInputException();
}
// this byte sequence is UTF16 character
int ucs4 = (0x07 & byte1) << 18 |
(0x3f & byte2) << 12 |
(0x3f & byte3) << 6 |
(0x3f & byte4);
outputChar[0] = (char)((ucs4 - 0x10000) / 0x400 + 0xd800);
outputChar[1] = (char)((ucs4 - 0x10000) % 0x400 + 0xdc00);
outputSize = 2;
} else {
badInputLength = 1;
byteOff += byteOffAdjustment;
throw new MalformedInputException();
}
if (charOff + outputSize > outEnd) {
byteOff = startByteOff;
byteOff += byteOffAdjustment;
throw new ConversionBufferFullException();
}
for (int i = 0; i < outputSize; i++) {
output[charOff + i] = outputChar[i];
}
charOff += outputSize;
}
byteOff += byteOffAdjustment;
return charOff - outOff;
}
/*
* Return the character set id
*/
public String getCharacterEncoding() {
return "UTF8";
}
/*
* Reset after finding bad input
*/
public void reset() {
byteOff = charOff = 0;
savedSize = 0;
}
}