NS_IMETHODIMP nsISO2022JPToUnicodeV2::Convert(
const char * aSrc, int32_t * aSrcLen,
PRUnichar * aDest, int32_t * aDestLen)
{
static const uint16_t fbIdx[128] =
{
/* 0x8X */
0xFFFD, 0xFFFD, 0xFFFD, 0xFFFD, 0xFFFD, 0xFFFD, 0xFFFD, 0xFFFD,
0xFFFD, 0xFFFD, 0xFFFD, 0xFFFD, 0xFFFD, 0xFFFD, 0xFFFD, 0xFFFD,
/* 0x9X */
0xFFFD, 0xFFFD, 0xFFFD, 0xFFFD, 0xFFFD, 0xFFFD, 0xFFFD, 0xFFFD,
0xFFFD, 0xFFFD, 0xFFFD, 0xFFFD, 0xFFFD, 0xFFFD, 0xFFFD, 0xFFFD,
/* 0xAX */
0xFFFD, 0, 94, 94* 2, 94* 3, 94* 4, 94* 5, 94* 6,
94* 7, 94* 8 , 94* 9, 94*10, 94*11, 94*12, 94*13, 94*14,
/* 0xBX */
94*15, 94*16, 94*17, 94*18, 94*19, 94*20, 94*21, 94*22,
94*23, 94*24, 94*25, 94*26, 94*27, 94*28, 94*29, 94*30,
/* 0xCX */
94*31, 94*32, 94*33, 94*34, 94*35, 94*36, 94*37, 94*38,
94*39, 94*40, 94*41, 94*42, 94*43, 94*44, 94*45, 94*46,
/* 0xDX */
94*47, 94*48, 94*49, 94*50, 94*51, 94*52, 94*53, 94*54,
94*55, 94*56, 94*57, 94*58, 94*59, 94*60, 94*61, 94*62,
/* 0xEX */
94*63, 94*64, 94*65, 94*66, 94*67, 94*68, 94*69, 94*70,
94*71, 94*72, 94*73, 94*74, 94*75, 94*76, 94*77, 94*78,
/* 0xFX */
94*79, 94*80, 94*81, 94*82, 94*83, 94*84, 94*85, 94*86,
94*87, 94*88, 94*89, 94*90, 94*91, 94*92, 94*93, 0xFFFD,
};
static const uint8_t sbIdx[256] =
{
/* 0x0X */
0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
/* 0x1X */
0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
/* 0x2X */
0xFF, 0, 1, 2, 3, 4, 5, 6,
7, 8 , 9, 10, 11, 12, 13, 14,
/* 0x3X */
15, 16, 17, 18, 19, 20, 21, 22,
23, 24, 25, 26, 27, 28, 29, 30,
/* 0x4X */
31, 32, 33, 34, 35, 36, 37, 38,
39, 40, 41, 42, 43, 44, 45, 46,
/* 0x5X */
47, 48, 49, 50, 51, 52, 53, 54,
55, 56, 57, 58, 59, 60, 61, 62,
/* 0x6X */
63, 64, 65, 66, 67, 68, 69, 70,
71, 72, 73, 74, 75, 76, 77, 78,
/* 0x7X */
79, 80, 81, 82, 83, 84, 85, 86,
87, 88, 89, 90, 91, 92, 93, 0xFF,
/* 0x8X */
0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
/* 0x9X */
0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
/* 0xAX */
0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
/* 0xBX */
0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
/* 0xCX */
0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
/* 0xDX */
0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
/* 0xEX */
0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
/* 0xFX */
0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
};
const unsigned char* srcEnd = (unsigned char*)aSrc + *aSrcLen;
const unsigned char* src =(unsigned char*) aSrc;
PRUnichar* destEnd = aDest + *aDestLen;
PRUnichar* dest = aDest;
while((src < srcEnd))
{
switch(mState)
{
case mState_ASCII:
if(0x1b == *src)
{
mLastLegalState = mState;
mState = mState_ESC;
} else if(*src & 0x80) {
if (mErrBehavior == kOnError_Signal)
goto error3;
if (CHECK_OVERRUN(dest, destEnd, 1))
goto error1;
*dest++ = UNICODE_REPLACEMENT_CHARACTER;
} else {
if (CHECK_OVERRUN(dest, destEnd, 1))
goto error1;
*dest++ = (PRUnichar) *src;
}
break;
case mState_ESC:
if( '(' == *src) {
mState = mState_ESC_28;
} else if ('$' == *src) {
mState = mState_ESC_24;
} else if ('.' == *src) { // for ISO-2022-JP-2
mState = mState_ESC_2e;
} else if ('N' == *src) { // for ISO-2022-JP-2
mState = mState_ESC_4e;
} else {
if (CHECK_OVERRUN(dest, destEnd, 2))
goto error1;
*dest++ = (PRUnichar) 0x1b;
if (0x80 & *src) {
if (mErrBehavior == kOnError_Signal)
goto error3;
*dest++ = UNICODE_REPLACEMENT_CHARACTER;
} else {
*dest++ = (PRUnichar) *src;
}
mState = mLastLegalState;
}
break;
case mState_ESC_28: // ESC (
if( 'B' == *src) {
mState = mState_ASCII;
if (mRunLength == 0) {
if (CHECK_OVERRUN(dest, destEnd, 1))
goto error1;
*dest++ = 0xFFFD;
}
mRunLength = 0;
} else if ('J' == *src) {
mState = mState_JISX0201_1976Roman;
if (mRunLength == 0 && mLastLegalState != mState_ASCII) {
if (CHECK_OVERRUN(dest, destEnd, 1))
goto error1;
if (mErrBehavior == kOnError_Signal)
goto error3;
*dest++ = 0xFFFD;
}
mRunLength = 0;
} else if ('I' == *src) {
mState = mState_JISX0201_1976Kana;
mRunLength = 0;
} else {
if (CHECK_OVERRUN(dest, destEnd, 3))
goto error1;
*dest++ = (PRUnichar) 0x1b;
*dest++ = (PRUnichar) '(';
if (0x80 & *src) {
if (mErrBehavior == kOnError_Signal)
goto error3;
*dest++ = UNICODE_REPLACEMENT_CHARACTER;
} else {
*dest++ = (PRUnichar) *src;
}
mState = mLastLegalState;
}
break;
case mState_ESC_24: // ESC $
if( '@' == *src) {
mState = mState_JISX0208_1978;
mRunLength = 0;
} else if ('A' == *src) {
mState = mState_GB2312_1980;
mRunLength = 0;
} else if ('B' == *src) {
mState = mState_JISX0208_1983;
mRunLength = 0;
} else if ('(' == *src) {
mState = mState_ESC_24_28;
} else {
if (CHECK_OVERRUN(dest, destEnd, 3))
goto error1;
*dest++ = (PRUnichar) 0x1b;
*dest++ = (PRUnichar) '$';
if (0x80 & *src) {
if (mErrBehavior == kOnError_Signal)
goto error3;
*dest++ = UNICODE_REPLACEMENT_CHARACTER;
} else {
*dest++ = (PRUnichar) *src;
}
mState = mLastLegalState;
}
break;
case mState_ESC_24_28: // ESC $ (
if( 'C' == *src) {
mState = mState_KSC5601_1987;
mRunLength = 0;
} else if ('D' == *src) {
mState = mState_JISX0212_1990;
mRunLength = 0;
} else {
if (CHECK_OVERRUN(dest, destEnd, 4))
goto error1;
*dest++ = (PRUnichar) 0x1b;
*dest++ = (PRUnichar) '$';
*dest++ = (PRUnichar) '(';
if (0x80 & *src) {
if (mErrBehavior == kOnError_Signal)
goto error3;
*dest++ = UNICODE_REPLACEMENT_CHARACTER;
} else {
*dest++ = (PRUnichar) *src;
}
mState = mLastLegalState;
}
break;
case mState_JISX0201_1976Roman:
if(0x1b == *src) {
mLastLegalState = mState;
mState = mState_ESC;
} else if(*src & 0x80) {
if (mErrBehavior == kOnError_Signal)
goto error3;
if (CHECK_OVERRUN(dest, destEnd, 1))
goto error1;
*dest++ = UNICODE_REPLACEMENT_CHARACTER;
++mRunLength;
} else {
// XXX We need to decide how to handle \ and ~ here
// we may need a if statement here for '\' and '~'
// to map them to Yen and Overbar
if (CHECK_OVERRUN(dest, destEnd, 1))
goto error1;
*dest++ = (PRUnichar) *src;
++mRunLength;
}
break;
case mState_JISX0201_1976Kana:
if(0x1b == *src) {
mLastLegalState = mState;
mState = mState_ESC;
} else {
if (CHECK_OVERRUN(dest, destEnd, 1))
goto error1;
if((0x21 <= *src) && (*src <= 0x5F)) {
*dest++ = (0xFF61-0x0021) + *src;
} else {
if (mErrBehavior == kOnError_Signal)
goto error3;
*dest++ = UNICODE_REPLACEMENT_CHARACTER;
}
++mRunLength;
}
break;
case mState_JISX0208_1978:
if(0x1b == *src) {
mLastLegalState = mState;
mState = mState_ESC;
} else if(*src & 0x80) {
mLastLegalState = mState;
mState = mState_ERROR;
} else {
mData = JIS0208_INDEX[*src & 0x7F];
if (0xFFFD == mData) {
if (mErrBehavior == kOnError_Signal)
goto error3;
mState = mState_ERROR;
} else {
mState = mState_JISX0208_1978_2ndbyte;
}
}
break;
case mState_GB2312_1980:
if(0x1b == *src) {
mLastLegalState = mState;
mState = mState_ESC;
} else if(*src & 0x80) {
mLastLegalState = mState;
mState = mState_ERROR;
} else {
mData = fbIdx[*src & 0x7F];
if (0xFFFD == mData) {
if (mErrBehavior == kOnError_Signal)
goto error3;
mState = mState_ERROR;
} else {
mState = mState_GB2312_1980_2ndbyte;
}
}
break;
case mState_JISX0208_1983:
if(0x1b == *src) {
mLastLegalState = mState;
mState = mState_ESC;
} else if(*src & 0x80) {
mLastLegalState = mState;
mState = mState_ERROR;
} else {
mData = JIS0208_INDEX[*src & 0x7F];
if (0xFFFD == mData) {
if (mErrBehavior == kOnError_Signal)
goto error3;
mState = mState_ERROR;
} else {
mState = mState_JISX0208_1983_2ndbyte;
}
}
break;
case mState_KSC5601_1987:
if(0x1b == *src) {
mLastLegalState = mState;
mState = mState_ESC;
} else if(*src & 0x80) {
mLastLegalState = mState;
mState = mState_ERROR;
} else {
mData = fbIdx[*src & 0x7F];
if (0xFFFD == mData) {
if (mErrBehavior == kOnError_Signal)
goto error3;
mState = mState_ERROR;
} else {
mState = mState_KSC5601_1987_2ndbyte;
}
}
break;
case mState_JISX0212_1990:
if(0x1b == *src) {
mLastLegalState = mState;
mState = mState_ESC;
} else if(*src & 0x80) {
mLastLegalState = mState;
mState = mState_ERROR;
} else {
mData = JIS0212_INDEX[*src & 0x7F];
if (0xFFFD == mData) {
if (mErrBehavior == kOnError_Signal)
goto error3;
mState = mState_ERROR;
} else {
mState = mState_JISX0212_1990_2ndbyte;
}
}
break;
case mState_JISX0208_1978_2ndbyte:
{
if (CHECK_OVERRUN(dest, destEnd, 1))
goto error1;
uint8_t off = sbIdx[*src];
if(0xFF == off) {
if (mErrBehavior == kOnError_Signal)
goto error3;
*dest++ = UNICODE_REPLACEMENT_CHARACTER;
} else {
// XXX We need to map from JIS X 0208 1983 to 1987
// in the next line before pass to *dest++
*dest++ = gJapaneseMap[mData+off];
}
++mRunLength;
mState = mState_JISX0208_1978;
}
break;
case mState_GB2312_1980_2ndbyte:
{
if (CHECK_OVERRUN(dest, destEnd, 1))
goto error1;
uint8_t off = sbIdx[*src];
if(0xFF == off) {
if (mErrBehavior == kOnError_Signal)
goto error3;
*dest++ = UNICODE_REPLACEMENT_CHARACTER;
} else {
if (!mGB2312Decoder) {
// creating a delegate converter (GB2312)
nsresult rv;
nsCOMPtr<nsICharsetConverterManager> ccm =
do_GetService(kCharsetConverterManagerCID, &rv);
if (NS_SUCCEEDED(rv)) {
rv = ccm->GetUnicodeDecoderRaw("GB2312", &mGB2312Decoder);
}
}
if (!mGB2312Decoder) {// failed creating a delegate converter
goto error2;
} else {
unsigned char gb[2];
PRUnichar uni;
int32_t gbLen = 2, uniLen = 1;
// ((mData/94)+0x21) is the original 1st byte.
// *src is the present 2nd byte.
// Put 2 bytes (one character) to gb[] with GB2312 encoding.
gb[0] = ((mData / 94) + 0x21) | 0x80;
gb[1] = *src | 0x80;
// Convert GB2312 to unicode.
mGB2312Decoder->Convert((const char *)gb, &gbLen,
&uni, &uniLen);
*dest++ = uni;
}
}
++mRunLength;
mState = mState_GB2312_1980;
}
break;
case mState_JISX0208_1983_2ndbyte:
{
if (CHECK_OVERRUN(dest, destEnd, 1))
goto error1;
uint8_t off = sbIdx[*src];
if(0xFF == off) {
if (mErrBehavior == kOnError_Signal)
goto error3;
*dest++ = UNICODE_REPLACEMENT_CHARACTER;
} else {
*dest++ = gJapaneseMap[mData+off];
}
++mRunLength;
mState = mState_JISX0208_1983;
}
break;
case mState_KSC5601_1987_2ndbyte:
{
if (CHECK_OVERRUN(dest, destEnd, 1))
goto error1;
uint8_t off = sbIdx[*src];
if(0xFF == off) {
if (mErrBehavior == kOnError_Signal)
goto error3;
*dest++ = UNICODE_REPLACEMENT_CHARACTER;
} else {
if (!mEUCKRDecoder) {
// creating a delegate converter (EUC-KR)
nsresult rv;
nsCOMPtr<nsICharsetConverterManager> ccm =
do_GetService(kCharsetConverterManagerCID, &rv);
if (NS_SUCCEEDED(rv)) {
rv = ccm->GetUnicodeDecoderRaw("EUC-KR", &mEUCKRDecoder);
}
}
if (!mEUCKRDecoder) {// failed creating a delegate converter
goto error2;
} else {
unsigned char ksc[2];
PRUnichar uni;
int32_t kscLen = 2, uniLen = 1;
// ((mData/94)+0x21) is the original 1st byte.
// *src is the present 2nd byte.
// Put 2 bytes (one character) to ksc[] with EUC-KR encoding.
ksc[0] = ((mData / 94) + 0x21) | 0x80;
ksc[1] = *src | 0x80;
// Convert EUC-KR to unicode.
mEUCKRDecoder->Convert((const char *)ksc, &kscLen,
&uni, &uniLen);
*dest++ = uni;
}
}
++mRunLength;
mState = mState_KSC5601_1987;
}
break;
case mState_JISX0212_1990_2ndbyte:
{
uint8_t off = sbIdx[*src];
if (CHECK_OVERRUN(dest, destEnd, 1))
goto error1;
if(0xFF == off) {
if (mErrBehavior == kOnError_Signal)
goto error3;
*dest++ = UNICODE_REPLACEMENT_CHARACTER;
} else {
*dest++ = gJapaneseMap[mData+off];
}
++mRunLength;
mState = mState_JISX0212_1990;
}
break;
case mState_ESC_2e: // ESC .
// "ESC ." will designate 96 character set to G2.
mState = mLastLegalState;
if( 'A' == *src) {
G2charset = G2_ISO88591;
} else if ('F' == *src) {
G2charset = G2_ISO88597;
} else {
if (CHECK_OVERRUN(dest, destEnd, 3))
goto error1;
*dest++ = (PRUnichar) 0x1b;
*dest++ = (PRUnichar) '.';
if (0x80 & *src) {
if (mErrBehavior == kOnError_Signal)
goto error3;
*dest++ = UNICODE_REPLACEMENT_CHARACTER;
} else {
*dest++ = (PRUnichar) *src;
}
}
break;
case mState_ESC_4e: // ESC N
// "ESC N" is the SS2 sequence, that invoke a G2 designated
// character set. Since SS2 is effective only for next one
// character, mState should be returned to the last status.
mState = mLastLegalState;
if((0x20 <= *src) && (*src <= 0x7F)) {
if (CHECK_OVERRUN(dest, destEnd, 1))
goto error1;
if (G2_ISO88591 == G2charset) {
*dest++ = *src | 0x80;
} else if (G2_ISO88597 == G2charset) {
if (!mISO88597Decoder) {
// creating a delegate converter (ISO-8859-7)
nsresult rv;
nsCOMPtr<nsICharsetConverterManager> ccm =
do_GetService(kCharsetConverterManagerCID, &rv);
if (NS_SUCCEEDED(rv)) {
rv = ccm->GetUnicodeDecoderRaw("ISO-8859-7", &mISO88597Decoder);
}
}
if (!mISO88597Decoder) {// failed creating a delegate converter
goto error2;
} else {
// Put one character with ISO-8859-7 encoding.
unsigned char gr = *src | 0x80;
PRUnichar uni;
int32_t grLen = 1, uniLen = 1;
// Convert ISO-8859-7 to unicode.
mISO88597Decoder->Convert((const char *)&gr, &grLen,
&uni, &uniLen);
*dest++ = uni;
}
} else {// G2charset is G2_unknown (not designated yet)
if (mErrBehavior == kOnError_Signal)
goto error3;
*dest++ = UNICODE_REPLACEMENT_CHARACTER;
}
++mRunLength;
} else {
if (CHECK_OVERRUN(dest, destEnd, 3))
goto error1;
*dest++ = (PRUnichar) 0x1b;
*dest++ = (PRUnichar) 'N';
if (0x80 & *src) {
if (mErrBehavior == kOnError_Signal)
goto error3;
*dest++ = UNICODE_REPLACEMENT_CHARACTER;
} else {
*dest++ = (PRUnichar) *src;
}
}
break;
case mState_ERROR:
mState = mLastLegalState;
if (mErrBehavior == kOnError_Signal) {
mRunLength = 0;
goto error3;
}
if (CHECK_OVERRUN(dest, destEnd, 1))
goto error1;
*dest++ = UNICODE_REPLACEMENT_CHARACTER;
++mRunLength;
break;
} // switch
src++;
}
*aDestLen = dest - aDest;
return NS_OK;
error1:
*aDestLen = dest - aDest;
*aSrcLen = src - (const unsigned char*)aSrc;
return NS_OK_UDEC_MOREOUTPUT;
error2:
*aDestLen = dest - aDest;
*aSrcLen = src - (const unsigned char*)aSrc;
return NS_ERROR_UNEXPECTED;
error3:
*aDestLen = dest - aDest;
*aSrcLen = src - (const unsigned char*)aSrc;
return NS_ERROR_ILLEGAL_INPUT;
}
NS_IMETHODIMP nsISO2022KRToUnicode::Convert(const char * aSrc, int32_t * aSrcLen, PRUnichar * aDest, int32_t * aDestLen)
{
const unsigned char* srcEnd = (unsigned char*)aSrc + *aSrcLen;
const unsigned char* src =(unsigned char*) aSrc;
PRUnichar* destEnd = aDest + *aDestLen;
PRUnichar* dest = aDest;
while((src < srcEnd))
{
// if LF/CR, return to US-ASCII unconditionally.
if ( *src == 0x0a || *src == 0x0d )
mState = mState_Init;
switch(mState)
{
case mState_Init:
if(0x1b == *src) {
mLastLegalState = mState_ASCII;
mState = mState_ESC;
break;
}
mState = mState_ASCII;
// fall through
case mState_ASCII:
if(0x0e == *src) { // Shift-Out
mState = mState_KSX1001_1992;
mRunLength = 0;
}
else if(*src & 0x80) {
if (CHECK_OVERRUN(dest, destEnd, 1))
goto error1;
*dest++ = 0xFFFD;
}
else {
if (CHECK_OVERRUN(dest, destEnd, 1))
goto error1;
*dest++ = (PRUnichar) *src;
}
break;
case mState_ESC:
if('$' == *src) {
mState = mState_ESC_24;
}
else {
if (CHECK_OVERRUN(dest, destEnd, 2))
goto error1;
*dest++ = (PRUnichar) 0x1b;
*dest++ = (0x80 & *src) ? 0xFFFD : (PRUnichar) *src;
mState = mLastLegalState;
}
break;
case mState_ESC_24: // ESC $
if(')' == *src) {
mState = mState_ESC_24_29;
}
else {
if (CHECK_OVERRUN(dest, destEnd, 3))
goto error1;
*dest++ = (PRUnichar) 0x1b;
*dest++ = (PRUnichar) '$';
*dest++ = (0x80 & *src) ? 0xFFFD : (PRUnichar) *src;
mState = mLastLegalState;
}
break;
case mState_ESC_24_29: // ESC $ )
mState = mLastLegalState;
if('C' == *src) {
mState = mState_ASCII;
mRunLength = 0;
}
else {
if (CHECK_OVERRUN(dest, destEnd, 4))
goto error1;
*dest++ = (PRUnichar) 0x1b;
*dest++ = (PRUnichar) '$';
*dest++ = (PRUnichar) ')';
*dest++ = (0x80 & *src) ? 0xFFFD : (PRUnichar) *src;
mState = mLastLegalState;
}
break;
case mState_KSX1001_1992:
if (0x20 < (uint8_t) *src && (uint8_t) *src < 0x7f) {
mData = (uint8_t) *src;
mState = mState_KSX1001_1992_2ndbyte;
}
else if (0x0f == *src) { // Shift-In (SI)
mState = mState_ASCII;
if (mRunLength == 0) {
if (CHECK_OVERRUN(dest, destEnd, 1))
goto error1;
*dest++ = 0xFFFD;
}
mRunLength = 0;
}
else if ((uint8_t) *src == 0x20 || (uint8_t) *src == 0x09) {
// Allow space and tab between SO and SI (i.e. in Hangul segment)
if (CHECK_OVERRUN(dest, destEnd, 1))
goto error1;
mState = mState_KSX1001_1992;
*dest++ = (PRUnichar) *src;
++mRunLength;
}
else { // Everything else is invalid.
if (CHECK_OVERRUN(dest, destEnd, 1))
goto error1;
*dest++ = 0xFFFD;
}
break;
case mState_KSX1001_1992_2ndbyte:
if ( 0x20 < (uint8_t) *src && (uint8_t) *src < 0x7f ) {
if (!mEUCKRDecoder) {
// creating a delegate converter (EUC-KR)
nsresult rv;
nsCOMPtr<nsICharsetConverterManager> ccm =
do_GetService(kCharsetConverterManagerCID, &rv);
if (NS_SUCCEEDED(rv)) {
rv = ccm->GetUnicodeDecoderRaw("EUC-KR", &mEUCKRDecoder);
}
}
if (!mEUCKRDecoder) {// failed creating a delegate converter
*dest++ = 0xFFFD;
}
else {
if (CHECK_OVERRUN(dest, destEnd, 1))
goto error1;
unsigned char ksx[2];
PRUnichar uni;
int32_t ksxLen = 2, uniLen = 1;
// mData is the original 1st byte.
// *src is the present 2nd byte.
// Put 2 bytes (one character) to ksx[] with EUC-KR encoding.
ksx[0] = mData | 0x80;
ksx[1] = *src | 0x80;
// Convert EUC-KR to unicode.
mEUCKRDecoder->Convert((const char *)ksx, &ksxLen, &uni, &uniLen);
*dest++ = uni;
++mRunLength;
}
mState = mState_KSX1001_1992;
}
else { // Invalid
if ( 0x0f == *src ) { // Shift-In (SI)
mState = mState_ASCII;
}
else {
mState = mState_KSX1001_1992;
}
if (CHECK_OVERRUN(dest, destEnd, 1))
goto error1;
*dest++ = 0xFFFD;
}
break;
case mState_ERROR:
mState = mLastLegalState;
if (CHECK_OVERRUN(dest, destEnd, 1))
goto error1;
*dest++ = 0xFFFD;
break;
} // switch
src++;
}
*aDestLen = dest - aDest;
return NS_OK;
error1:
*aDestLen = dest-aDest;
*aSrcLen = src-(unsigned char*)aSrc;
return NS_OK_UDEC_MOREOUTPUT;
}
NS_IMETHODIMP nsISO2022CNToUnicode::Convert(const char * aSrc, int32_t * aSrcLen, char16_t * aDest, int32_t * aDestLen)
{
const unsigned char * srcEnd = (unsigned char *)aSrc + *aSrcLen;
const unsigned char * src = (unsigned char *) aSrc;
char16_t* destEnd = aDest + *aDestLen;
char16_t* dest = aDest;
nsresult rv;
int32_t aLen;
while ((src < srcEnd))
{
switch (mState)
{
case eState_ASCII:
if(ESC == *src) {
mState = eState_ESC;
} else {
if (CHECK_OVERRUN(dest, destEnd, 1))
goto error1;
*dest++ = (0x80 & *src) ? 0xFFFD : (char16_t) *src;
mState = eState_ASCII;
}
break;
case eState_ESC: // ESC
if('$' == *src) {
mState = eState_ESC_24;
} else {
if (CHECK_OVERRUN(dest, destEnd, 2))
goto error1;
*dest++ = (char16_t) ESC;
*dest++ = (0x80 & *src) ? 0xFFFD : (char16_t) *src;
mState = eState_ASCII;
}
break;
case eState_ESC_24: // ESC $
if(')' == *src) {
mState = eState_ESC_24_29;
} else if('*' == *src) {
mState = eState_ESC_24_2A;
} else if('+' == *src) {
mState = eState_ESC_24_2B;
} else {
if (CHECK_OVERRUN(dest, destEnd, 3))
goto error1;
*dest++ = (char16_t) ESC;
*dest++ = (char16_t) '$';
*dest++ = (0x80 & *src) ? 0xFFFD : (char16_t) *src;
mState = eState_ASCII;
}
break;
case eState_ESC_24_29: // ESC $ )
if('A' == *src) {
mState = eState_ESC_24_29_A;
} else if('G' == *src) {
mState = eState_ESC_24_29_G;
} else {
if (CHECK_OVERRUN(dest, destEnd, 4))
goto error1;
*dest++ = (char16_t) ESC;
*dest++ = (char16_t) '$';
*dest++ = (char16_t) ')';
*dest++ = (0x80 & *src) ? 0xFFFD : (char16_t) *src;
mState = eState_ASCII;
}
break;
case eState_ESC_24_29_A: // ESC $ ) A
if(SO == *src) {
mState = eState_GB2312_1980;
mRunLength = 0;
} else {
if (CHECK_OVERRUN(dest, destEnd, 5))
goto error1;
*dest++ = (char16_t) ESC;
*dest++ = (char16_t) '$';
*dest++ = (char16_t) ')';
*dest++ = (char16_t) 'A';
*dest++ = (0x80 & *src) ? 0xFFFD : (char16_t) *src;
mState = eState_ASCII;
}
break;
case eState_GB2312_1980: // ESC $ ) A SO
if(SI == *src) { // Shift-In (SI)
mState = eState_ESC_24_29_A_SO_SI;
if (mRunLength == 0) {
if (CHECK_OVERRUN(dest, destEnd, 1))
goto error1;
*dest++ = 0xFFFD;
}
mRunLength = 0;
} else if(ESC == *src) {
mState = eState_ESC;
} else {
if(0x20 < *src && *src < 0x7f) {
mData = *src;
mState = eState_GB2312_1980_2ndbyte;
} else {
if (CHECK_OVERRUN(dest, destEnd, 1))
goto error1;
*dest++ = (0x80 & *src) ? 0xFFFD : (char16_t) *src;
}
}
break;
case eState_GB2312_1980_2ndbyte: // ESC $ ) A SO
if(0x20 < *src && *src < 0x7f) {
unsigned char gb[2];
int32_t gbLen = 2;
gb[0] = mData | 0x80;
gb[1] = *src | 0x80;
aLen = destEnd - dest;
rv = GB2312_To_Unicode(gb, gbLen, dest, &aLen);
++mRunLength;
if(rv == NS_OK_UDEC_MOREOUTPUT) {
goto error1;
} else if(NS_FAILED(rv)) {
goto error2;
}
dest += aLen;
} else {
if (CHECK_OVERRUN(dest, destEnd, 2))
goto error1;
*dest++ = (char16_t) mData;
*dest++ = (0x80 & *src) ? 0xFFFD : (char16_t) *src;
}
mState = eState_GB2312_1980;
break;
case eState_ESC_24_29_A_SO_SI: // ESC $ ) A SO SI
if(SO == *src) {
mState = eState_GB2312_1980;
mRunLength = 0;
} else if(ESC == *src) {
mState = eState_ESC;
} else {
if (CHECK_OVERRUN(dest, destEnd, 1))
goto error1;
*dest++ = (0x80 & *src) ? 0xFFFD : (char16_t) *src;
mState = eState_ESC_24_29_A_SO_SI;
}
break;
case eState_ESC_24_29_G: // ESC $ ) G
if(SO == *src) {
mState = eState_CNS11643_1;
mRunLength = 0;
} else {
if (CHECK_OVERRUN(dest, destEnd, 5))
goto error1;
*dest++ = (char16_t) ESC;
*dest++ = (char16_t) '$';
*dest++ = (char16_t) ')';
*dest++ = (char16_t) 'G';
*dest++ = (0x80 & *src) ? 0xFFFD : (char16_t) *src;
mState = eState_ASCII;
}
break;
case eState_CNS11643_1: // ESC $ ) G SO
if(SI == *src) { // Shift-In (SI)
mState = eState_ESC_24_29_G_SO_SI;
if (mRunLength == 0) {
if (CHECK_OVERRUN(dest, destEnd, 1))
goto error1;
*dest++ = 0xFFFD;
}
mRunLength = 0;
} else if(ESC == *src) {
mState = eState_ESC;
} else {
if(0x20 < *src && *src < 0x7f) {
mData = *src;
mState = eState_CNS11643_1_2ndbyte;
} else {
if (CHECK_OVERRUN(dest, destEnd, 1))
goto error1;
*dest++ = (0x80 & *src) ? 0xFFFD : (char16_t) *src;
}
}
break;
case eState_CNS11643_1_2ndbyte: // ESC $ ) G SO
if(0x20 < *src && *src < 0x7f) {
unsigned char cns[4];
int32_t cnsLen = 2;
cns[0] = mData | 0x80;
cns[1] = *src | 0x80;
aLen = destEnd - dest;
rv = EUCTW_To_Unicode(cns, cnsLen, dest, &aLen);
++mRunLength;
if(rv == NS_OK_UDEC_MOREOUTPUT) {
goto error1;
} else if(NS_FAILED(rv)) {
goto error2;
}
dest += aLen;
} else {
if (CHECK_OVERRUN(dest, destEnd, 2))
goto error1;
*dest++ = (char16_t) mData;
*dest++ = (0x80 & *src) ? 0xFFFD : (char16_t) *src;
}
mState = eState_CNS11643_1;
break;
case eState_ESC_24_29_G_SO_SI: // ESC $ ) G SO SI
if(SO == *src) {
mState = eState_CNS11643_1;
mRunLength = 0;
} else if(ESC == *src) {
mState = eState_ESC;
} else {
if (CHECK_OVERRUN(dest, destEnd, 1))
goto error1;
*dest++ = (0x80 & *src) ? 0xFFFD : (char16_t) *src;
mState = eState_ESC_24_29_G_SO_SI;
}
break;
case eState_ESC_24_2A: // ESC $ *
if('H' == *src) {
mState = eState_ESC_24_2A_H;
} else {
if (CHECK_OVERRUN(dest, destEnd, 4))
goto error1;
*dest++ = (char16_t) ESC;
*dest++ = (char16_t) '$';
*dest++ = (char16_t) '*';
*dest++ = (0x80 & *src) ? 0xFFFD : (char16_t) *src;
mState = eState_ASCII;
}
break;
case eState_ESC_24_2A_H: // ESC $ * H
if(ESC == *src) {
mState = eState_ESC_24_2A_H_ESC;
} else {
if (CHECK_OVERRUN(dest, destEnd, 5))
goto error1;
*dest++ = (char16_t) ESC;
*dest++ = (char16_t) '$';
*dest++ = (char16_t) '*';
*dest++ = (char16_t) 'H';
*dest++ = (0x80 & *src) ? 0xFFFD : (char16_t) *src;
mState = eState_ASCII;
}
break;
case eState_ESC_24_2A_H_ESC: // ESC $ * H ESC
if(SS2 == *src) {
mState = eState_CNS11643_2;
mRunLength = 0;
} else if('$' == *src) {
mState = eState_ESC_24;
} else {
if (CHECK_OVERRUN(dest, destEnd, 6))
goto error1;
*dest++ = (char16_t) ESC;
*dest++ = (char16_t) '$';
*dest++ = (char16_t) '*';
*dest++ = (char16_t) 'H';
*dest++ = (char16_t) ESC;
*dest++ = (0x80 & *src) ? 0xFFFD : (char16_t) *src;
mState = eState_ASCII;
}
break;
case eState_CNS11643_2: // ESC $ * H ESC SS2
if(SI == *src) { // Shift-In (SI)
mState = eState_ESC_24_2A_H_ESC_SS2_SI;
if (mRunLength == 0) {
if (CHECK_OVERRUN(dest, destEnd, 1))
goto error1;
*dest++ = 0xFFFD;
}
mRunLength = 0;
} else if(ESC == *src) {
mState = eState_ESC_24_2A_H_ESC;
} else {
if(0x20 < *src && *src < 0x7f) {
mData = *src;
mState = eState_CNS11643_2_2ndbyte;
} else {
if (CHECK_OVERRUN(dest, destEnd, 1))
goto error1;
*dest++ = (0x80 & *src) ? 0xFFFD : (char16_t) *src;
}
}
break;
case eState_CNS11643_2_2ndbyte: // ESC $ * H ESC SS2
if(0x20 < *src && *src < 0x7f) {
unsigned char cns[4];
int32_t cnsLen = 4;
cns[0] = (unsigned char) MBYTE;
cns[1] = (unsigned char) (PMASK + 2);
cns[2] = mData | 0x80;
cns[3] = *src | 0x80;
aLen = destEnd - dest;
rv = EUCTW_To_Unicode(cns, cnsLen, dest, &aLen);
++mRunLength;
if(rv == NS_OK_UDEC_MOREOUTPUT) {
goto error1;
} else if(NS_FAILED(rv)) {
goto error2;
}
dest += aLen;
} else {
if (CHECK_OVERRUN(dest, destEnd, 2))
goto error1;
*dest++ = (char16_t) mData;
*dest++ = (0x80 & *src) ? 0xFFFD : (char16_t) *src;
}
mState = eState_CNS11643_2;
break;
case eState_ESC_24_2A_H_ESC_SS2_SI: // ESC $ * H ESC SS2 SI
if(ESC == *src) {
mState = eState_ESC_24_2A_H_ESC_SS2_SI_ESC;
} else {
if (CHECK_OVERRUN(dest, destEnd, 1))
goto error1;
*dest++ = (0x80 & *src) ? 0xFFFD : (char16_t) *src;
mState = eState_ESC_24_2A_H_ESC_SS2_SI;
}
break;
case eState_ESC_24_2A_H_ESC_SS2_SI_ESC: // ESC $ * H ESC SS2 SI ESC
if(SS2 == *src) {
mState = eState_CNS11643_2;
mRunLength = 0;
} else if('$' == *src) {
mState = eState_ESC_24;
} else {
if (CHECK_OVERRUN(dest, destEnd, 1))
goto error1;
*dest++ = (0x80 & *src) ? 0xFFFD : (char16_t) *src;
mState = eState_ESC_24_2A_H_ESC_SS2_SI;
}
break;
case eState_ESC_24_2B: // ESC $ +
if('I' <= *src && *src <= 'M') {
mState = eState_ESC_24_2B_I;
mPlaneID = *src - 'I' + 3;
} else {
if (CHECK_OVERRUN(dest, destEnd, 4))
goto error1;
*dest++ = (char16_t) ESC;
*dest++ = (char16_t) '$';
*dest++ = (char16_t) '+';
*dest++ = (0x80 & *src) ? 0xFFFD : (char16_t) *src;
mState = eState_ASCII;
}
break;
case eState_ESC_24_2B_I: // ESC $ + I
if(ESC == *src) {
mState = eState_ESC_24_2B_I_ESC;
} else {
if (CHECK_OVERRUN(dest, destEnd, 5))
goto error1;
*dest++ = (char16_t) ESC;
*dest++ = (char16_t) '$';
*dest++ = (char16_t) '+';
*dest++ = (char16_t) 'I' + mPlaneID - 3;
*dest++ = (0x80 & *src) ? 0xFFFD : (char16_t) *src;
mState = eState_ASCII;
}
break;
case eState_ESC_24_2B_I_ESC: // ESC $ + I ESC
if(SS3 == *src) {
mState = eState_CNS11643_3;
mRunLength = 0;
} else if('$' == *src) {
mState = eState_ESC_24;
} else {
if (CHECK_OVERRUN(dest, destEnd, 6))
goto error1;
*dest++ = (char16_t) ESC;
*dest++ = (char16_t) '$';
*dest++ = (char16_t) '+';
*dest++ = (char16_t) 'I' + mPlaneID - 3;
*dest++ = (char16_t) ESC;
*dest++ = (0x80 & *src) ? 0xFFFD : (char16_t) *src;
mState = eState_ASCII;
}
break;
case eState_CNS11643_3: // ESC $ + I ESC SS3
if(SI == *src) { // Shift-In (SI)
mState = eState_ESC_24_2B_I_ESC_SS3_SI;
if (mRunLength == 0) {
if (CHECK_OVERRUN(dest, destEnd, 1))
goto error1;
*dest++ = 0xFFFD;
}
mRunLength = 0;
} else if(ESC == *src) {
mState = eState_ESC_24_2B_I_ESC;
} else {
if(0x20 < *src && *src < 0x7f) {
mData = *src;
mState = eState_CNS11643_3_2ndbyte;
} else {
if (CHECK_OVERRUN(dest, destEnd, 1))
goto error1;
*dest++ = (0x80 & *src) ? 0xFFFD : (char16_t) *src;
}
}
break;
case eState_CNS11643_3_2ndbyte: // ESC $ + I ESC SS3
if(0x20 < *src && *src < 0x7f) {
unsigned char cns[4];
int32_t cnsLen = 4;
cns[0] = (unsigned char) MBYTE;
cns[1] = (unsigned char) (PMASK + mPlaneID);
cns[2] = mData | 0x80;
cns[3] = *src | 0x80;
aLen = destEnd - dest;
rv = EUCTW_To_Unicode(cns, cnsLen, dest, &aLen);
++mRunLength;
if(rv == NS_OK_UDEC_MOREOUTPUT) {
goto error1;
} else if(NS_FAILED(rv)) {
goto error2;
}
dest += aLen;
} else {
if (CHECK_OVERRUN(dest, destEnd, 2))
goto error1;
*dest++ = (char16_t) mData;
*dest++ = (0x80 & *src) ? 0xFFFD : (char16_t) *src;
}
mState = eState_CNS11643_3;
break;
case eState_ESC_24_2B_I_ESC_SS3_SI: // ESC $ + I ESC SS3 SI
if(ESC == *src) {
mState = eState_ESC_24_2B_I_ESC_SS3_SI_ESC;
} else {
if (CHECK_OVERRUN(dest, destEnd, 1))
goto error1;
*dest++ = (0x80 & *src) ? 0xFFFD : (char16_t) *src;
mState = eState_ESC_24_2B_I_ESC_SS3_SI;
}
break;
case eState_ESC_24_2B_I_ESC_SS3_SI_ESC: // ESC $ + I ESC SS3 SI ESC
if(SS3 == *src) {
mState = eState_CNS11643_3;
mRunLength = 0;
} else if('$' == *src) {
mState = eState_ESC_24;
} else {
if (CHECK_OVERRUN(dest, destEnd, 1))
goto error1;
*dest++ = (0x80 & *src) ? 0xFFFD : (char16_t) *src;
mState = eState_ESC_24_2B_I_ESC_SS3_SI;
}
break;
case eState_ERROR:
NS_NOTREACHED("unhandled case");
goto error2;
} // switch
src++;
}
*aDestLen = dest- aDest;
return NS_OK;
error1:
*aDestLen = dest-aDest;
*aSrcLen = src - (const unsigned char*)aSrc;
return NS_OK_UDEC_MOREOUTPUT;
error2:
*aSrcLen = src - (const unsigned char*)aSrc;
*aDestLen = dest-aDest;
mState = eState_ASCII;
return NS_ERROR_UNEXPECTED;
}
