/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*
* This file is part of the LibreOffice project.
*
* 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/.
*
* This file incorporates work covered by the following license notice:
*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed
* with this work for additional information regarding copyright
* ownership. The ASF licenses this file to you under the Apache
* License, Version 2.0 (the "License"); you may not use this file
* except in compliance with the License. You may obtain a copy of
* the License at http://www.apache.org/licenses/LICENSE-2.0 .
*/
#include "sal/config.h"
#include "rtl/textcvt.h"
#include "sal/types.h"
#include "context.hxx"
#include "converter.hxx"
#include "convertgb18030.hxx"
#include "tenchelp.hxx"
#include "unichars.hxx"
namespace {
enum ImplGb18030ToUnicodeState
{
IMPL_GB_18030_TO_UNICODE_STATE_0,
IMPL_GB_18030_TO_UNICODE_STATE_1,
IMPL_GB_18030_TO_UNICODE_STATE_2,
IMPL_GB_18030_TO_UNICODE_STATE_3
};
struct ImplGb18030ToUnicodeContext
{
ImplGb18030ToUnicodeState m_eState;
sal_uInt32 m_nCode;
};
}
void * ImplCreateGb18030ToUnicodeContext()
{
ImplGb18030ToUnicodeContext * pContext = new ImplGb18030ToUnicodeContext;
pContext->m_eState = IMPL_GB_18030_TO_UNICODE_STATE_0;
return pContext;
}
void ImplResetGb18030ToUnicodeContext(void * pContext)
{
if (pContext)
static_cast< ImplGb18030ToUnicodeContext * >(pContext)->m_eState
= IMPL_GB_18030_TO_UNICODE_STATE_0;
}
void ImplDestroyGb18030ToUnicodeContext(void * pContext)
{
delete static_cast< ImplGb18030ToUnicodeContext * >(pContext);
}
sal_Size ImplConvertGb18030ToUnicode(void const * pData,
void * pContext,
char const * pSrcBuf,
sal_Size nSrcBytes,
sal_Unicode * pDestBuf,
sal_Size nDestChars,
sal_uInt32 nFlags,
sal_uInt32 * pInfo,
sal_Size * pSrcCvtBytes)
{
sal_Unicode const * pGb18030Data
= static_cast< ImplGb18030ConverterData const * >(pData)->m_pGb18030ToUnicodeData;
ImplGb180302000ToUnicodeRange const * pGb18030Ranges
= static_cast< ImplGb18030ConverterData const * >(pData)->
m_pGb18030ToUnicodeRanges;
ImplGb18030ToUnicodeState eState = IMPL_GB_18030_TO_UNICODE_STATE_0;
sal_uInt32 nCode = 0;
sal_uInt32 nInfo = 0;
sal_Size nConverted = 0;
sal_Unicode * pDestBufPtr = pDestBuf;
sal_Unicode * pDestBufEnd = pDestBuf + nDestChars;
if (pContext)
{
eState = static_cast< ImplGb18030ToUnicodeContext * >(pContext)->m_eState;
nCode = static_cast< ImplGb18030ToUnicodeContext * >(pContext)->m_nCode;
}
for (; nConverted < nSrcBytes; ++nConverted)
{
bool bUndefined = true;
sal_uInt32 nChar = *reinterpret_cast<unsigned char const *>(pSrcBuf++);
switch (eState)
{
case IMPL_GB_18030_TO_UNICODE_STATE_0:
if (nChar < 0x80)
if (pDestBufPtr != pDestBufEnd)
*pDestBufPtr++ = (sal_Unicode) nChar;
else
goto no_output;
else if (nChar == 0x80)
goto bad_input;
else if (nChar <= 0xFE)
{
nCode = nChar - 0x81;
eState = IMPL_GB_18030_TO_UNICODE_STATE_1;
}
else
{
bUndefined = false;
goto bad_input;
}
break;
case IMPL_GB_18030_TO_UNICODE_STATE_1:
if (nChar >= 0x30 && nChar <= 0x39)
{
nCode = nCode * 10 + (nChar - 0x30);
eState = IMPL_GB_18030_TO_UNICODE_STATE_2;
}
else if ((nChar >= 0x40 && nChar <= 0x7E)
|| (nChar >= 0x80 && nChar <= 0xFE))
{
nCode = nCode * 190 + (nChar <= 0x7E ? nChar - 0x40 :
nChar - 0x80 + 63);
if (pDestBufPtr != pDestBufEnd)
*pDestBufPtr++ = pGb18030Data[nCode];
else
goto no_output;
eState = IMPL_GB_18030_TO_UNICODE_STATE_0;
}
else
{
bUndefined = false;
goto bad_input;
}
break;
case IMPL_GB_18030_TO_UNICODE_STATE_2:
if (nChar >= 0x81 && nChar <= 0xFE)
{
nCode = nCode * 126 + (nChar - 0x81);
eState = IMPL_GB_18030_TO_UNICODE_STATE_3;
}
else
{
bUndefined = false;
goto bad_input;
}
break;
case IMPL_GB_18030_TO_UNICODE_STATE_3:
if (nChar >= 0x30 && nChar <= 0x39)
{
nCode = nCode * 10 + (nChar - 0x30);
// 90 30 81 30 to E3 32 9A 35 maps to U+10000 to U+10FFFF:
if (nCode >= 189000 && nCode <= 1237575)
if (pDestBufEnd - pDestBufPtr >= 2)
{
nCode -= 189000 - 0x10000;
*pDestBufPtr++
= (sal_Unicode) ImplGetHighSurrogate(nCode);
*pDestBufPtr++
= (sal_Unicode) ImplGetLowSurrogate(nCode);
}
else
goto no_output;
else
{
ImplGb180302000ToUnicodeRange const * pRange
= pGb18030Ranges;
sal_uInt32 nFirstNonRange = 0;
for (;;)
{
if (pRange->m_nNonRangeDataIndex == -1)
goto bad_input;
else if (nCode < pRange->m_nFirstLinear)
{
if (pDestBufPtr != pDestBufEnd)
*pDestBufPtr++
= pGb18030Data[
pRange->m_nNonRangeDataIndex
+ (nCode - nFirstNonRange)];
else
goto no_output;
break;
}
else if (nCode < pRange->m_nPastLinear)
{
if (pDestBufPtr != pDestBufEnd)
*pDestBufPtr++
= (sal_Unicode)
(pRange->m_nFirstUnicode
+ (nCode
- pRange->
m_nFirstLinear));
else
goto no_output;
break;
}
nFirstNonRange = (pRange++)->m_nPastLinear;
}
}
eState = IMPL_GB_18030_TO_UNICODE_STATE_0;
}
else
{
bUndefined = false;
goto bad_input;
}
break;
}
continue;
bad_input:
switch (sal::detail::textenc::handleBadInputTextToUnicodeConversion(
bUndefined, true, 0, nFlags, &pDestBufPtr, pDestBufEnd,
&nInfo))
{
case sal::detail::textenc::BAD_INPUT_STOP:
eState = IMPL_GB_18030_TO_UNICODE_STATE_0;
break;
case sal::detail::textenc::BAD_INPUT_CONTINUE:
eState = IMPL_GB_18030_TO_UNICODE_STATE_0;
continue;
case sal::detail::textenc::BAD_INPUT_NO_OUTPUT:
goto no_output;
}
break;
no_output:
--pSrcBuf;
nInfo |= RTL_TEXTTOUNICODE_INFO_DESTBUFFERTOSMALL;
break;
}
if (eState != IMPL_GB_18030_TO_UNICODE_STATE_0
&& (nInfo & (RTL_TEXTTOUNICODE_INFO_ERROR
| RTL_TEXTTOUNICODE_INFO_DESTBUFFERTOSMALL))
== 0)
{
if ((nFlags & RTL_TEXTTOUNICODE_FLAGS_FLUSH) == 0)
nInfo |= RTL_TEXTTOUNICODE_INFO_SRCBUFFERTOSMALL;
else
switch (sal::detail::textenc::handleBadInputTextToUnicodeConversion(
false, true, 0, nFlags, &pDestBufPtr, pDestBufEnd,
&nInfo))
{
case sal::detail::textenc::BAD_INPUT_STOP:
case sal::detail::textenc::BAD_INPUT_CONTINUE:
eState = IMPL_GB_18030_TO_UNICODE_STATE_0;
break;
case sal::detail::textenc::BAD_INPUT_NO_OUTPUT:
nInfo |= RTL_TEXTTOUNICODE_INFO_DESTBUFFERTOSMALL;
break;
}
}
if (pContext)
{
static_cast< ImplGb18030ToUnicodeContext * >(pContext)->m_eState = eState;
static_cast< ImplGb18030ToUnicodeContext * >(pContext)->m_nCode = nCode;
}
if (pInfo)
*pInfo = nInfo;
if (pSrcCvtBytes)
*pSrcCvtBytes = nConverted;
return pDestBufPtr - pDestBuf;
}
sal_Size ImplConvertUnicodeToGb18030(void const * pData,
void * pContext,
sal_Unicode const * pSrcBuf,
sal_Size nSrcChars,
char * pDestBuf,
sal_Size nDestBytes,
sal_uInt32 nFlags,
sal_uInt32 * pInfo,
sal_Size * pSrcCvtChars)
{
sal_uInt32 const * pGb18030Data
= static_cast< ImplGb18030ConverterData const * >(pData)->
m_pUnicodeToGb18030Data;
ImplUnicodeToGb180302000Range const * pGb18030Ranges
= static_cast< ImplGb18030ConverterData const * >(pData)->
m_pUnicodeToGb18030Ranges;
sal_Unicode nHighSurrogate = 0;
sal_uInt32 nInfo = 0;
sal_Size nConverted = 0;
char * pDestBufPtr = pDestBuf;
char * pDestBufEnd = pDestBuf + nDestBytes;
if (pContext)
nHighSurrogate
= static_cast<ImplUnicodeToTextContext *>(pContext)->m_nHighSurrogate;
for (; nConverted < nSrcChars; ++nConverted)
{
bool bUndefined = true;
sal_uInt32 nChar = *pSrcBuf++;
if (nHighSurrogate == 0)
{
if (ImplIsHighSurrogate(nChar))
{
nHighSurrogate = (sal_Unicode) nChar;
continue;
}
}
else if (ImplIsLowSurrogate(nChar))
nChar = ImplCombineSurrogates(nHighSurrogate, nChar);
else
{
bUndefined = false;
goto bad_input;
}
if (ImplIsLowSurrogate(nChar) || ImplIsNoncharacter(nChar))
{
bUndefined = false;
goto bad_input;
}
if (nChar < 0x80)
if (pDestBufPtr != pDestBufEnd)
*pDestBufPtr++ = static_cast< char >(nChar);
else
goto no_output;
else if (nChar < 0x10000)
{
ImplUnicodeToGb180302000Range const * pRange = pGb18030Ranges;
sal_Unicode nFirstNonRange = 0x80;
for (;;)
{
if (nChar < pRange->m_nFirstUnicode)
{
sal_uInt32 nCode
= pGb18030Data[pRange->m_nNonRangeDataIndex
+ (nChar - nFirstNonRange)];
if (pDestBufEnd - pDestBufPtr
>= (nCode <= 0xFFFF ? 2 : 4))
{
if (nCode > 0xFFFF)
{
*pDestBufPtr++ = static_cast< char >(nCode >> 24);
*pDestBufPtr++ = static_cast< char >(nCode >> 16 & 0xFF);
}
*pDestBufPtr++ = static_cast< char >(nCode >> 8 & 0xFF);
*pDestBufPtr++ = static_cast< char >(nCode & 0xFF);
}
else
goto no_output;
break;
}
else if (nChar <= pRange->m_nLastUnicode)
{
if (pDestBufEnd - pDestBufPtr >= 4)
{
sal_uInt32 nCode
= pRange->m_nFirstLinear
+ (nChar - pRange->m_nFirstUnicode);
*pDestBufPtr++ = static_cast< char >(nCode / 12600 + 0x81);
*pDestBufPtr++
= static_cast< char >(nCode / 1260 % 10 + 0x30);
*pDestBufPtr++ = static_cast< char >(nCode / 10 % 126 + 0x81);
*pDestBufPtr++ = static_cast< char >(nCode % 10 + 0x30);
}
else
goto no_output;
break;
}
nFirstNonRange
= (sal_Unicode) ((pRange++)->m_nLastUnicode + 1);
}
}
else
if (pDestBufEnd - pDestBufPtr >= 4)
{
sal_uInt32 nCode = nChar - 0x10000;
*pDestBufPtr++ = static_cast< char >(nCode / 12600 + 0x90);
*pDestBufPtr++ = static_cast< char >(nCode / 1260 % 10 + 0x30);
*pDestBufPtr++ = static_cast< char >(nCode / 10 % 126 + 0x81);
*pDestBufPtr++ = static_cast< char >(nCode % 10 + 0x30);
}
else
goto no_output;
nHighSurrogate = 0;
continue;
bad_input:
switch (sal::detail::textenc::handleBadInputUnicodeToTextConversion(
bUndefined, nChar, nFlags, &pDestBufPtr, pDestBufEnd,
&nInfo, NULL, 0, NULL))
{
case sal::detail::textenc::BAD_INPUT_STOP:
nHighSurrogate = 0;
break;
case sal::detail::textenc::BAD_INPUT_CONTINUE:
nHighSurrogate = 0;
continue;
case sal::detail::textenc::BAD_INPUT_NO_OUTPUT:
goto no_output;
}
break;
no_output:
--pSrcBuf;
nInfo |= RTL_UNICODETOTEXT_INFO_DESTBUFFERTOSMALL;
break;
}
if (nHighSurrogate != 0
&& (nInfo & (RTL_UNICODETOTEXT_INFO_ERROR
| RTL_UNICODETOTEXT_INFO_DESTBUFFERTOSMALL))
== 0)
{
if ((nFlags & RTL_UNICODETOTEXT_FLAGS_FLUSH) != 0)
nInfo |= RTL_UNICODETOTEXT_INFO_SRCBUFFERTOSMALL;
else
switch (sal::detail::textenc::handleBadInputUnicodeToTextConversion(
false, 0, nFlags, &pDestBufPtr, pDestBufEnd, &nInfo,
NULL, 0, NULL))
{
case sal::detail::textenc::BAD_INPUT_STOP:
case sal::detail::textenc::BAD_INPUT_CONTINUE:
nHighSurrogate = 0;
break;
case sal::detail::textenc::BAD_INPUT_NO_OUTPUT:
nInfo |= RTL_UNICODETOTEXT_INFO_DESTBUFFERTOSMALL;
break;
}
}
if (pContext)
static_cast<ImplUnicodeToTextContext *>(pContext)->m_nHighSurrogate
= nHighSurrogate;
if (pInfo)
*pInfo = nInfo;
if (pSrcCvtChars)
*pSrcCvtChars = nConverted;
return pDestBufPtr - pDestBuf;
}
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */