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tenfourfox/intl/uconv/ucvja/nsJapaneseToUnicode.cpp
Cameron Kaiser c9b2922b70 hello FPR
2017-04-19 00:56:45 -07:00

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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#include "nsJapaneseToUnicode.h"
#include "nsUCSupport.h"
#include "japanese.map"
#include "mozilla/Assertions.h"
#include "mozilla/dom/EncodingUtils.h"
using mozilla::dom::EncodingUtils;
// HTML5 says to use Windows-31J instead of the real Shift_JIS for decoding
#define SJIS_INDEX gCP932Index[0]
#define JIS0208_INDEX gCP932Index[1]
#define JIS0212_INDEX gJIS0212Index
#define SJIS_UNMAPPED 0x30fb
#define UNICODE_REPLACEMENT_CHARACTER 0xfffd
#define IN_GR_RANGE(b) \
((uint8_t(0xa1) <= uint8_t(b)) && (uint8_t(b) <= uint8_t(0xfe)))
NS_IMETHODIMP nsShiftJISToUnicode::Convert(
const char * aSrc, int32_t * aSrcLen,
char16_t * aDest, int32_t * aDestLen)
{
static const uint8_t sbIdx[256] =
{
0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, /* 0x00 */
0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, /* 0x08 */
0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, /* 0x10 */
0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, /* 0x18 */
0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, /* 0x20 */
0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, /* 0x28 */
0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, /* 0x30 */
0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, /* 0x38 */
0, 1, 2, 3, 4, 5, 6, 7, /* 0x40 */
8, 9, 10, 11, 12, 13, 14, 15, /* 0x48 */
16, 17, 18, 19, 20, 21, 22, 23, /* 0x50 */
24, 25, 26, 27, 28, 29, 30, 31, /* 0x58 */
32, 33, 34, 35, 36, 37, 38, 39, /* 0x60 */
40, 41, 42, 43, 44, 45, 46, 47, /* 0x68 */
48, 49, 50, 51, 52, 53, 54, 55, /* 0x70 */
56, 57, 58, 59, 60, 61, 62, 0xFF, /* 0x78 */
63, 64, 65, 66, 67, 68, 69, 70, /* 0x80 */
71, 72, 73, 74, 75, 76, 77, 78, /* 0x88 */
79, 80, 81, 82, 83, 84, 85, 86, /* 0x90 */
87, 88, 89, 90, 91, 92, 93, 94, /* 0x98 */
95, 96, 97, 98, 99, 100, 101, 102, /* 0xa0 */
103, 104, 105, 106, 107, 108, 109, 110, /* 0xa8 */
111, 112, 113, 114, 115, 116, 117, 118, /* 0xb0 */
119, 120, 121, 122, 123, 124, 125, 126, /* 0xb8 */
127, 128, 129, 130, 131, 132, 133, 134, /* 0xc0 */
135, 136, 137, 138, 139, 140, 141, 142, /* 0xc8 */
143, 144, 145, 146, 147, 148, 149, 150, /* 0xd0 */
151, 152, 153, 154, 155, 156, 157, 158, /* 0xd8 */
159, 160, 161, 162, 163, 164, 165, 166, /* 0xe0 */
167, 168, 169, 170, 171, 172, 173, 174, /* 0xe8 */
175, 176, 177, 178, 179, 180, 181, 182, /* 0xf0 */
183, 184, 185, 186, 187, 0xFF, 0xFF, 0xFF, /* 0xf8 */
};
const unsigned char* srcEnd = (unsigned char*)aSrc + *aSrcLen;
const unsigned char* src =(unsigned char*) aSrc;
char16_t* destEnd = aDest + *aDestLen;
char16_t* dest = aDest;
while (src < srcEnd) {
switch (mState) {
case 0:
if (*src <= 0x80) {
// ASCII
*dest++ = (char16_t) *src;
if (dest >= destEnd) {
goto error1;
}
} else {
mData = SJIS_INDEX[*src & 0x7F];
if (mData < 0xE000) {
mState = 1; // two bytes
} else if (mData < 0xF000) {
mState = 2; // EUDC
} else {
*dest++ = mData; // JIS 0201
if (dest >= destEnd) {
goto error1;
}
}
}
break;
case 1: // Index to table
{
MOZ_ASSERT(mData < 0xE000);
uint8_t off = sbIdx[*src];
// Error handling: in the case where the second octet is not in the
// valid ranges 0x40-0x7E 0x80-0xFC, unconsume the invalid octet and
// interpret it as the ASCII value. In the case where the second
// octet is in the valid range but there is no mapping for the
// 2-octet sequence, do not unconsume.
if(0xFF == off) {
src--;
if (mErrBehavior == kOnError_Signal)
goto error_invalidchar;
*dest++ = UNICODE_REPLACEMENT_CHARACTER;
} else {
char16_t ch = gJapaneseMap[mData+off];
if(ch == 0xfffd) {
if (mErrBehavior == kOnError_Signal)
goto error_invalidchar;
ch = SJIS_UNMAPPED;
}
*dest++ = ch;
}
mState = 0;
if(dest >= destEnd)
goto error1;
}
break;
case 2: // EUDC
{
MOZ_ASSERT(0xE000 <= mData && mData < 0xF000);
uint8_t off = sbIdx[*src];
// Error handling as in case 1
if(0xFF == off) {
src--;
if (mErrBehavior == kOnError_Signal)
goto error_invalidchar;
*dest++ = UNICODE_REPLACEMENT_CHARACTER;
} else {
*dest++ = mData + off;
}
mState = 0;
if(dest >= destEnd)
goto error1;
}
break;
}
src++;
}
*aDestLen = dest - aDest;
return NS_OK;
error_invalidchar:
*aDestLen = dest - aDest;
*aSrcLen = src - (const unsigned char*)aSrc;
return NS_ERROR_ILLEGAL_INPUT;
error1:
*aDestLen = dest - aDest;
src++;
if ((mState == 0) && (src == srcEnd)) {
return NS_OK;
}
*aSrcLen = src - (const unsigned char*)aSrc;
return NS_OK_UDEC_MOREOUTPUT;
}
char16_t
nsShiftJISToUnicode::GetCharacterForUnMapped()
{
return char16_t(SJIS_UNMAPPED);
}
NS_IMETHODIMP nsEUCJPToUnicodeV2::Convert(
const char * aSrc, int32_t * aSrcLen,
char16_t * aDest, int32_t * aDestLen)
{
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, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
/* 0x3X */
0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
/* 0x4X */
0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
/* 0x5X */
0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
/* 0x6X */
0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
/* 0x7X */
0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 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, 0, 1, 2, 3, 4, 5, 6,
7, 8 , 9, 10, 11, 12, 13, 14,
/* 0xBX */
15, 16, 17, 18, 19, 20, 21, 22,
23, 24, 25, 26, 27, 28, 29, 30,
/* 0xCX */
31, 32, 33, 34, 35, 36, 37, 38,
39, 40, 41, 42, 43, 44, 45, 46,
/* 0xDX */
47, 48, 49, 50, 51, 52, 53, 54,
55, 56, 57, 58, 59, 60, 61, 62,
/* 0xEX */
63, 64, 65, 66, 67, 68, 69, 70,
71, 72, 73, 74, 75, 76, 77, 78,
/* 0xFX */
79, 80, 81, 82, 83, 84, 85, 86,
87, 88, 89, 90, 91, 92, 93, 0xFF,
};
const unsigned char* srcEnd = (unsigned char*)aSrc + *aSrcLen;
const unsigned char* src =(unsigned char*) aSrc;
char16_t* destEnd = aDest + *aDestLen;
char16_t* dest = aDest;
while((src < srcEnd))
{
switch(mState)
{
case 0:
if(*src & 0x80 && *src != (unsigned char)0xa0)
{
mData = JIS0208_INDEX[*src & 0x7F];
if(mData != 0xFFFD )
{
mState = 1; // two byte JIS0208
} else {
if( 0x8e == *src) {
// JIS 0201
mState = 2; // JIS0201
} else if(0x8f == *src) {
// JIS 0212
mState = 3; // JIS0212
} else {
// others
if (mErrBehavior == kOnError_Signal)
goto error_invalidchar;
*dest++ = 0xFFFD;
if(dest >= destEnd)
goto error1;
}
}
} else {
// ASCII
*dest++ = (char16_t) *src;
if(dest >= destEnd)
goto error1;
}
break;
case 1: // Index to table
{
uint8_t off = sbIdx[*src];
if(0xFF == off) {
if (mErrBehavior == kOnError_Signal)
goto error_invalidchar;
*dest++ = 0xFFFD;
// if the first byte is valid for EUC-JP but the second
// is not while being a valid US-ASCII, save it
// instead of eating it up !
if ( (uint8_t)*src < (uint8_t)0x7f )
--src;
} else {
*dest++ = gJapaneseMap[mData+off];
}
mState = 0;
if(dest >= destEnd)
goto error1;
}
break;
case 2: // JIS 0201
{
if((0xA1 <= *src) && (*src <= 0xDF)) {
*dest++ = (0xFF61-0x00A1) + *src;
} else {
if (mErrBehavior == kOnError_Signal)
goto error_invalidchar;
*dest++ = 0xFFFD;
// if 0x8e is not followed by a valid JIS X 0201 byte
// but by a valid US-ASCII, save it instead of eating it up.
if ( (uint8_t)*src < (uint8_t)0x7f )
--src;
}
mState = 0;
if(dest >= destEnd)
goto error1;
}
break;
case 3: // JIS 0212
{
if (IN_GR_RANGE(*src))
{
mData = JIS0212_INDEX[*src & 0x7F];
if(mData != 0xFFFD )
{
mState = 4;
} else {
mState = 5; // error
}
} else {
// First "JIS 0212" byte is not in the valid GR range: save it
if (mErrBehavior == kOnError_Signal)
goto error_invalidchar;
*dest++ = 0xFFFD;
--src;
mState = 0;
if(dest >= destEnd)
goto error1;
}
}
break;
case 4:
{
uint8_t off = sbIdx[*src];
if(0xFF != off) {
*dest++ = gJapaneseMap[mData+off];
mState = 0;
if(dest >= destEnd)
goto error1;
break;
}
// else fall through to error handler
}
case 5: // two bytes undefined
{
if (mErrBehavior == kOnError_Signal)
goto error_invalidchar;
*dest++ = 0xFFFD;
// Undefined JIS 0212 two byte sequence. If the second byte is in
// the valid range for a two byte sequence (0xa1 - 0xfe) consume
// both bytes. Otherwise resynchronize on the second byte.
if (!IN_GR_RANGE(*src))
--src;
mState = 0;
if(dest >= destEnd)
goto error1;
}
break;
}
src++;
}
*aDestLen = dest - aDest;
return NS_OK;
error_invalidchar:
*aDestLen = dest - aDest;
*aSrcLen = src - (const unsigned char*)aSrc;
return NS_ERROR_ILLEGAL_INPUT;
error1:
*aDestLen = dest - aDest;
src++;
if ((mState == 0) && (src == srcEnd)) {
return NS_OK;
}
*aSrcLen = src - (const unsigned char*)aSrc;
return NS_OK_UDEC_MOREOUTPUT;
}
NS_IMETHODIMP nsISO2022JPToUnicodeV2::Convert(
const char * aSrc, int32_t * aSrcLen,
char16_t * 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;
char16_t* destEnd = aDest + *aDestLen;
char16_t* 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++ = (char16_t) *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++ = (char16_t) 0x1b;
if (0x80 & *src) {
if (mErrBehavior == kOnError_Signal)
goto error3;
*dest++ = UNICODE_REPLACEMENT_CHARACTER;
} else {
*dest++ = (char16_t) *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++ = (char16_t) 0x1b;
*dest++ = (char16_t) '(';
if (0x80 & *src) {
if (mErrBehavior == kOnError_Signal)
goto error3;
*dest++ = UNICODE_REPLACEMENT_CHARACTER;
} else {
*dest++ = (char16_t) *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++ = (char16_t) 0x1b;
*dest++ = (char16_t) '$';
if (0x80 & *src) {
if (mErrBehavior == kOnError_Signal)
goto error3;
*dest++ = UNICODE_REPLACEMENT_CHARACTER;
} else {
*dest++ = (char16_t) *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++ = (char16_t) 0x1b;
*dest++ = (char16_t) '$';
*dest++ = (char16_t) '(';
if (0x80 & *src) {
if (mErrBehavior == kOnError_Signal)
goto error3;
*dest++ = UNICODE_REPLACEMENT_CHARACTER;
} else {
*dest++ = (char16_t) *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++ = (char16_t) *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)
mGB2312Decoder =
EncodingUtils::DecoderForEncoding("gb18030");
}
if (!mGB2312Decoder) {// failed creating a delegate converter
goto error2;
} else {
unsigned char gb[2];
char16_t 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)
mEUCKRDecoder =
EncodingUtils::DecoderForEncoding(NS_LITERAL_CSTRING("EUC-KR"));
}
if (!mEUCKRDecoder) {// failed creating a delegate converter
goto error2;
} else {
unsigned char ksc[2];
char16_t 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++ = (char16_t) 0x1b;
*dest++ = (char16_t) '.';
if (0x80 & *src) {
if (mErrBehavior == kOnError_Signal)
goto error3;
*dest++ = UNICODE_REPLACEMENT_CHARACTER;
} else {
*dest++ = (char16_t) *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)
mISO88597Decoder =
EncodingUtils::DecoderForEncoding(NS_LITERAL_CSTRING("ISO-8859-7"));
}
if (!mISO88597Decoder) {// failed creating a delegate converter
goto error2;
} else {
// Put one character with ISO-8859-7 encoding.
unsigned char gr = *src | 0x80;
char16_t 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++ = (char16_t) 0x1b;
*dest++ = (char16_t) 'N';
if (0x80 & *src) {
if (mErrBehavior == kOnError_Signal)
goto error3;
*dest++ = UNICODE_REPLACEMENT_CHARACTER;
} else {
*dest++ = (char16_t) *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;
}
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