/* -*- 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 <cassert>
#include <rtl/character.hxx>
#include <rtl/textcvt.h>
#include <sal/types.h>
#include "converter.hxx"
#include "convertiso2022jp.hxx"
#include "tenchelp.hxx"
namespace {
enum ImplIso2022JpToUnicodeState // order is important:
{
IMPL_ISO_2022_JP_TO_UNICODE_STATE_ASCII,
IMPL_ISO_2022_JP_TO_UNICODE_STATE_JIS_ROMAN,
IMPL_ISO_2022_JP_TO_UNICODE_STATE_0208,
IMPL_ISO_2022_JP_TO_UNICODE_STATE_0208_2,
IMPL_ISO_2022_JP_TO_UNICODE_STATE_ESC,
IMPL_ISO_2022_JP_TO_UNICODE_STATE_ESC_LPAREN,
IMPL_ISO_2022_JP_TO_UNICODE_STATE_ESC_DOLLAR
};
struct ImplIso2022JpToUnicodeContext
{
ImplIso2022JpToUnicodeState m_eState;
sal_uInt32 m_nRow;
};
struct ImplUnicodeToIso2022JpContext
{
sal_Unicode m_nHighSurrogate;
bool m_b0208;
};
}
void * ImplCreateIso2022JpToUnicodeContext()
{
ImplIso2022JpToUnicodeContext * pContext =
new ImplIso2022JpToUnicodeContext;
pContext->m_eState = IMPL_ISO_2022_JP_TO_UNICODE_STATE_ASCII;
return pContext;
}
void ImplResetIso2022JpToUnicodeContext(void * pContext)
{
if (pContext)
static_cast< ImplIso2022JpToUnicodeContext * >(pContext)->m_eState
= IMPL_ISO_2022_JP_TO_UNICODE_STATE_ASCII;
}
void ImplDestroyIso2022JpToUnicodeContext(void * pContext)
{
delete static_cast< ImplIso2022JpToUnicodeContext * >(pContext);
}
sal_Size ImplConvertIso2022JpToUnicode(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)
{
ImplDBCSToUniLeadTab const * pJisX0208Data
= static_cast< ImplIso2022JpConverterData const * >(pData)->
m_pJisX0208ToUnicodeData;
ImplIso2022JpToUnicodeState eState
= IMPL_ISO_2022_JP_TO_UNICODE_STATE_ASCII;
sal_uInt32 nRow = 0;
sal_uInt32 nInfo = 0;
sal_Size nConverted = 0;
sal_Unicode * pDestBufPtr = pDestBuf;
sal_Unicode * pDestBufEnd = pDestBuf + nDestChars;
sal_Size startOfCurrentChar = 0;
if (pContext)
{
eState = static_cast< ImplIso2022JpToUnicodeContext * >(pContext)->m_eState;
nRow = static_cast< ImplIso2022JpToUnicodeContext * >(pContext)->m_nRow;
}
for (; nConverted < nSrcBytes; ++nConverted)
{
bool bUndefined = true;
sal_uInt32 nChar = *reinterpret_cast<unsigned char const *>(pSrcBuf++);
switch (eState)
{
case IMPL_ISO_2022_JP_TO_UNICODE_STATE_ASCII:
if (nChar == 0x1B) // ESC
eState = IMPL_ISO_2022_JP_TO_UNICODE_STATE_ESC;
else if (nChar < 0x80)
if (pDestBufPtr != pDestBufEnd) {
*pDestBufPtr++ = static_cast<sal_Unicode>(nChar);
startOfCurrentChar = nConverted + 1;
} else
goto no_output;
else
{
bUndefined = false;
goto bad_input;
}
break;
case IMPL_ISO_2022_JP_TO_UNICODE_STATE_JIS_ROMAN:
if (nChar == 0x1B) // ESC
eState = IMPL_ISO_2022_JP_TO_UNICODE_STATE_ESC;
else if (nChar < 0x80)
if (pDestBufPtr != pDestBufEnd)
{
switch (nChar)
{
case 0x5C: // REVERSE SOLIDUS (\)
nChar = 0xA5; // YEN SIGN
break;
case 0x7E: // ~
nChar = 0xAF; // MACRON
break;
}
*pDestBufPtr++ = static_cast<sal_Unicode>(nChar);
startOfCurrentChar = nConverted + 1;
}
else
goto no_output;
else
{
bUndefined = false;
goto bad_input;
}
break;
case IMPL_ISO_2022_JP_TO_UNICODE_STATE_0208:
if (nChar == 0x1B) // ESC
eState = IMPL_ISO_2022_JP_TO_UNICODE_STATE_ESC;
else if (nChar >= 0x21 && nChar <= 0x7E)
{
nRow = nChar;
eState = IMPL_ISO_2022_JP_TO_UNICODE_STATE_0208_2;
}
else
{
bUndefined = false;
goto bad_input;
}
break;
case IMPL_ISO_2022_JP_TO_UNICODE_STATE_0208_2:
if (nChar >= 0x21 && nChar <= 0x7E)
{
sal_uInt16 nUnicode = 0;
sal_uInt32 nFirst = pJisX0208Data[nRow].mnTrailStart;
if (nChar >= nFirst
&& nChar <= pJisX0208Data[nRow].mnTrailEnd)
nUnicode = pJisX0208Data[nRow].
mpToUniTrailTab[nChar - nFirst];
if (nUnicode != 0)
if (pDestBufPtr != pDestBufEnd)
{
*pDestBufPtr++ = static_cast<sal_Unicode>(nUnicode);
eState = IMPL_ISO_2022_JP_TO_UNICODE_STATE_0208;
startOfCurrentChar = nConverted + 1;
}
else
goto no_output;
else
goto bad_input;
}
else
{
bUndefined = false;
goto bad_input;
}
break;
case IMPL_ISO_2022_JP_TO_UNICODE_STATE_ESC:
switch (nChar)
{
case 0x24: // $
eState = IMPL_ISO_2022_JP_TO_UNICODE_STATE_ESC_DOLLAR;
break;
case 0x28: // (
eState = IMPL_ISO_2022_JP_TO_UNICODE_STATE_ESC_LPAREN;
break;
default:
bUndefined = false;
goto bad_input;
}
break;
case IMPL_ISO_2022_JP_TO_UNICODE_STATE_ESC_LPAREN:
switch (nChar)
{
case 0x42: // B
eState = IMPL_ISO_2022_JP_TO_UNICODE_STATE_ASCII;
break;
case 0x4A: // J
eState = IMPL_ISO_2022_JP_TO_UNICODE_STATE_JIS_ROMAN;
break;
default:
bUndefined = false;
goto bad_input;
}
break;
case IMPL_ISO_2022_JP_TO_UNICODE_STATE_ESC_DOLLAR:
switch (nChar)
{
case 0x40: // @
case 0x42: // B
eState = IMPL_ISO_2022_JP_TO_UNICODE_STATE_0208;
break;
default:
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_ISO_2022_JP_TO_UNICODE_STATE_ASCII;
if ((nFlags & RTL_TEXTTOUNICODE_FLAGS_FLUSH) == 0) {
++nConverted;
} else {
nConverted = startOfCurrentChar;
}
break;
case sal::detail::textenc::BAD_INPUT_CONTINUE:
eState = IMPL_ISO_2022_JP_TO_UNICODE_STATE_ASCII;
startOfCurrentChar = nConverted + 1;
continue;
case sal::detail::textenc::BAD_INPUT_NO_OUTPUT:
goto no_output;
}
break;
no_output:
--pSrcBuf;
nInfo |= RTL_TEXTTOUNICODE_INFO_DESTBUFFERTOOSMALL;
break;
}
if (eState > IMPL_ISO_2022_JP_TO_UNICODE_STATE_0208
&& (nInfo & (RTL_TEXTTOUNICODE_INFO_ERROR
| RTL_TEXTTOUNICODE_INFO_DESTBUFFERTOOSMALL))
== 0)
{
if ((nFlags & RTL_TEXTTOUNICODE_FLAGS_FLUSH) == 0)
nInfo |= RTL_TEXTTOUNICODE_INFO_SRCBUFFERTOOSMALL;
else
switch (sal::detail::textenc::handleBadInputTextToUnicodeConversion(
false, true, 0, nFlags, &pDestBufPtr, pDestBufEnd,
&nInfo))
{
case sal::detail::textenc::BAD_INPUT_STOP:
if ((nFlags & RTL_TEXTTOUNICODE_FLAGS_FLUSH) != 0) {
nConverted = startOfCurrentChar;
}
[[fallthrough]];
case sal::detail::textenc::BAD_INPUT_CONTINUE:
eState = IMPL_ISO_2022_JP_TO_UNICODE_STATE_ASCII;
break;
case sal::detail::textenc::BAD_INPUT_NO_OUTPUT:
nInfo |= RTL_TEXTTOUNICODE_INFO_DESTBUFFERTOOSMALL;
break;
}
}
if (pContext)
{
static_cast< ImplIso2022JpToUnicodeContext * >(pContext)->m_eState = eState;
static_cast< ImplIso2022JpToUnicodeContext * >(pContext)->m_nRow = nRow;
}
if (pInfo)
*pInfo = nInfo;
if (pSrcCvtBytes)
*pSrcCvtBytes = nConverted;
return pDestBufPtr - pDestBuf;
}
void * ImplCreateUnicodeToIso2022JpContext()
{
ImplUnicodeToIso2022JpContext * pContext =
new ImplUnicodeToIso2022JpContext;
pContext->m_nHighSurrogate = 0;
pContext->m_b0208 = false;
return pContext;
}
void ImplResetUnicodeToIso2022JpContext(void * pContext)
{
if (pContext)
{
static_cast< ImplUnicodeToIso2022JpContext * >(pContext)->m_nHighSurrogate = 0;
static_cast< ImplUnicodeToIso2022JpContext * >(pContext)->m_b0208 = false;
}
}
void ImplDestroyUnicodeToIso2022JpContext(void * pContext)
{
delete static_cast< ImplUnicodeToIso2022JpContext * >(pContext);
}
sal_Size ImplConvertUnicodeToIso2022Jp(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)
{
ImplUniToDBCSHighTab const * pJisX0208Data
= static_cast< ImplIso2022JpConverterData const * >(pData)->
m_pUnicodeToJisX0208Data;
sal_Unicode nHighSurrogate = 0;
bool b0208 = false;
sal_uInt32 nInfo = 0;
sal_Size nConverted = 0;
char * pDestBufPtr = pDestBuf;
char * pDestBufEnd = pDestBuf + nDestBytes;
bool bWritten;
if (pContext)
{
nHighSurrogate
= static_cast< ImplUnicodeToIso2022JpContext * >(pContext)->m_nHighSurrogate;
b0208 = static_cast< ImplUnicodeToIso2022JpContext * >(pContext)->m_b0208;
}
for (; nConverted < nSrcChars; ++nConverted)
{
bool bUndefined = true;
sal_uInt32 nChar = *pSrcBuf++;
if (nHighSurrogate == 0)
{
if (rtl::isHighSurrogate(nChar))
{
nHighSurrogate = static_cast<sal_Unicode>(nChar);
continue;
}
else if (rtl::isLowSurrogate(nChar))
{
bUndefined = false;
goto bad_input;
}
}
else if (rtl::isLowSurrogate(nChar))
nChar = rtl::combineSurrogates(nHighSurrogate, nChar);
else
{
bUndefined = false;
goto bad_input;
}
assert(rtl::isUnicodeScalarValue(nChar));
if (nChar == 0x0A || nChar == 0x0D) // LF, CR
{
if (b0208)
{
if (pDestBufEnd - pDestBufPtr >= 3)
{
*pDestBufPtr++ = 0x1B; // ESC
*pDestBufPtr++ = 0x28; // (
*pDestBufPtr++ = 0x42; // B
b0208 = false;
}
else
goto no_output;
}
if (pDestBufPtr != pDestBufEnd)
*pDestBufPtr++ = static_cast< char >(nChar);
else
goto no_output;
}
else if (nChar == 0x1B)
goto bad_input;
else if (nChar < 0x80)
{
if (b0208)
{
if (pDestBufEnd - pDestBufPtr >= 3)
{
*pDestBufPtr++ = 0x1B; // ESC
*pDestBufPtr++ = 0x28; // (
*pDestBufPtr++ = 0x42; // B
b0208 = false;
}
else
goto no_output;
}
if (pDestBufPtr != pDestBufEnd)
*pDestBufPtr++ = static_cast< char >(nChar);
else
goto no_output;
}
else
{
sal_uInt16 nBytes = 0;
sal_uInt32 nIndex1 = nChar >> 8;
if (nIndex1 < 0x100)
{
sal_uInt32 nIndex2 = nChar & 0xFF;
sal_uInt32 nFirst = pJisX0208Data[nIndex1].mnLowStart;
if (nIndex2 >= nFirst
&& nIndex2 <= pJisX0208Data[nIndex1].mnLowEnd)
{
nBytes = pJisX0208Data[nIndex1].
mpToUniTrailTab[nIndex2 - nFirst];
if (nBytes == 0)
// For some reason, the tables in tcvtjp4.tab do not
// include these two conversions:
switch (nChar)
{
case 0xA5: // YEN SIGN
nBytes = 0x216F;
break;
case 0xAF: // MACRON
nBytes = 0x2131;
break;
}
}
}
if (nBytes != 0)
{
if (!b0208)
{
if (pDestBufEnd - pDestBufPtr >= 3)
{
*pDestBufPtr++ = 0x1B; // ESC
*pDestBufPtr++ = 0x24; // $
*pDestBufPtr++ = 0x42; // B
b0208 = true;
}
else
goto no_output;
}
if (pDestBufEnd - pDestBufPtr >= 2)
{
*pDestBufPtr++ = static_cast< char >(nBytes >> 8);
*pDestBufPtr++ = static_cast< char >(nBytes & 0xFF);
}
else
goto no_output;
}
else
goto bad_input;
}
nHighSurrogate = 0;
continue;
bad_input:
switch (sal::detail::textenc::handleBadInputUnicodeToTextConversion(
bUndefined, nChar, nFlags, &pDestBufPtr, pDestBufEnd,
&nInfo, "\x1B(B", b0208 ? 3 : 0, &bWritten))
{
case sal::detail::textenc::BAD_INPUT_STOP:
nHighSurrogate = 0;
break;
case sal::detail::textenc::BAD_INPUT_CONTINUE:
if (bWritten)
b0208 = false;
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 ((nInfo & (RTL_UNICODETOTEXT_INFO_ERROR
| RTL_UNICODETOTEXT_INFO_DESTBUFFERTOSMALL))
== 0)
{
bool bFlush = true;
if (nHighSurrogate != 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,
"\x1B(B", b0208 ? 3 : 0, &bWritten))
{
case sal::detail::textenc::BAD_INPUT_STOP:
nHighSurrogate = 0;
bFlush = false;
break;
case sal::detail::textenc::BAD_INPUT_CONTINUE:
if (bWritten)
b0208 = false;
nHighSurrogate = 0;
break;
case sal::detail::textenc::BAD_INPUT_NO_OUTPUT:
nInfo |= RTL_UNICODETOTEXT_INFO_DESTBUFFERTOSMALL;
break;
}
}
if (bFlush
&& b0208
&& (nFlags & RTL_UNICODETOTEXT_FLAGS_FLUSH) != 0)
{
if (pDestBufEnd - pDestBufPtr >= 3)
{
*pDestBufPtr++ = 0x1B; // ESC
*pDestBufPtr++ = 0x28; // (
*pDestBufPtr++ = 0x42; // B
b0208 = false;
}
else
nInfo |= RTL_UNICODETOTEXT_INFO_DESTBUFFERTOSMALL;
}
}
if (pContext)
{
static_cast< ImplUnicodeToIso2022JpContext * >(pContext)->m_nHighSurrogate
= nHighSurrogate;
static_cast< ImplUnicodeToIso2022JpContext * >(pContext)->m_b0208 = b0208;
}
if (pInfo)
*pInfo = nInfo;
if (pSrcCvtChars)
*pSrcCvtChars = nConverted;
return pDestBufPtr - pDestBuf;
}
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
↑ V547 Expression '(nFlags & ((sal_uInt32) 0x8000)) != 0' is always true.