internal override bool NextChar(CharsetRecog_mbcs.iteratedChar it, CharsetDetector det)
{
it.index = it.nextIndex;
it.error = false;
int firstByte;
firstByte = it.charValue = it.NextByte(det);
if (firstByte < 0)
{
return(false);
}
if (firstByte <= 0x7f || firstByte == 0xff)
{
// single byte character.
return(true);
}
int secondByte = it.NextByte(det);
if (secondByte < 0)
{
return(false);
}
it.charValue = (it.charValue << 8) | secondByte;
if (secondByte < 0x40 || secondByte == 0x7f || secondByte == 0xff)
{
it.error = true;
}
return(true);
}
internal override bool NextChar(CharsetRecog_mbcs.iteratedChar it, CharsetDetector det)
{
it.index = it.nextIndex;
it.error = false;
int firstByte;
firstByte = it.charValue = it.NextByte(det);
if (firstByte < 0)
{
return(false);
}
if (firstByte <= 0x7f || (firstByte > 0xa0 && firstByte <= 0xdf))
{
return(true);
}
int secondByte = it.NextByte(det);
if (secondByte < 0)
{
return(false);
}
it.charValue = (firstByte << 8) | secondByte;
if (!((secondByte >= 0x40 && secondByte <= 0x7f) || (secondByte >= 0x80 && secondByte <= 0xff)))
{
// Illegal second byte value.
it.error = true;
}
return(true);
}
/*
* (non-Javadoc) Get the next character value for EUC based encodings.
* Character "value" is simply the raw bytes that make up the character
* packed into an int.
*/
internal override bool NextChar(CharsetRecog_mbcs.iteratedChar it, CharsetDetector det)
{
it.index = it.nextIndex;
it.error = false;
int firstByte = 0;
int secondByte = 0;
int thirdByte = 0;
int fourthByte = 0;
buildChar : {
{
firstByte = it.charValue = it.NextByte(det);
if (firstByte < 0)
{
// Ran off the end of the input data
it.done = true;
goto gotobuildChar;
}
if (firstByte <= 0x80)
{
goto gotobuildChar;
}
secondByte = it.NextByte(det);
it.charValue = (it.charValue << 8) | secondByte;
if (firstByte >= 0x81 && firstByte <= 0xFE)
{
// Two byte Char
if ((secondByte >= 0x40 && secondByte <= 0x7E) ||
(secondByte >= 80 && secondByte <= 0xFE))
{
goto gotobuildChar;
}
// Four byte char
if (secondByte >= 0x30 && secondByte <= 0x39)
{
thirdByte = it.NextByte(det);
if (thirdByte >= 0x81 && thirdByte <= 0xFE)
{
fourthByte = it.NextByte(det);
if (fourthByte >= 0x30 && fourthByte <= 0x39)
{
it.charValue = (it.charValue << 16)
| (thirdByte << 8) | fourthByte;
goto gotobuildChar;
}
}
}
it.error = true;
goto gotobuildChar;
}
}
}
gotobuildChar:
;
return(it.done == false);
}
/*
* (non-Javadoc) Get the next character value for EUC based encodings.
* Character "value" is simply the raw bytes that make up the character
* packed into an int.
*/
internal override bool NextChar(CharsetRecog_mbcs.iteratedChar it, CharsetDetector det)
{
it.index = it.nextIndex;
it.error = false;
int firstByte = 0;
int secondByte = 0;
int thirdByte = 0;
// int fourthByte = 0;
buildChar : {
{
firstByte = it.charValue = it.NextByte(det);
if (firstByte < 0)
{
// Ran off the end of the input data
it.done = true;
goto gotobuildChar;
}
if (firstByte <= 0x8d)
{
goto gotobuildChar;
}
secondByte = it.NextByte(det);
it.charValue = (it.charValue << 8) | secondByte;
if (firstByte >= 0xA1 && firstByte <= 0xfe)
{
// Two byte Char
if (secondByte < 0xa1)
{
it.error = true;
}
goto gotobuildChar;
}
if (firstByte == 0x8e)
{
// Code Set 2.
// In EUC-JP, total char size is 2 bytes, only one byte of
// actual char value.
// In EUC-TW, total char size is 4 bytes, three bytes
// contribute to char value.
// We don't know which we've got.
// Treat it like EUC-JP. If the data really was EUC-TW, the
// following two
// bytes will look like a well formed 2 byte char.
if (secondByte < 0xa1)
{
it.error = true;
}
goto gotobuildChar;
}
if (firstByte == 0x8f)
{
// Code set 3.
// Three byte total char size, two bytes of actual char
// value.
thirdByte = it.NextByte(det);
it.charValue = (it.charValue << 8) | thirdByte;
if (thirdByte < 0xa1)
{
it.error = true;
}
}
}
}
gotobuildChar:
;
return(it.done == false);
}