diff options
Diffstat (limited to 'sal/textenc/convertiso2022cn.cxx')
| -rw-r--r-- | sal/textenc/convertiso2022cn.cxx | 873 |
1 files changed, 873 insertions, 0 deletions
diff --git a/sal/textenc/convertiso2022cn.cxx b/sal/textenc/convertiso2022cn.cxx new file mode 100644 index 000000000..60c2b5743 --- /dev/null +++ b/sal/textenc/convertiso2022cn.cxx @@ -0,0 +1,873 @@ +/* -*- 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 "convertiso2022cn.hxx" +#include "tenchelp.hxx" +#include "unichars.hxx" + +namespace { + +enum ImplIso2022CnToUnicodeState // order is important: +{ + IMPL_ISO_2022_CN_TO_UNICODE_STATE_ASCII, + IMPL_ISO_2022_CN_TO_UNICODE_STATE_SO, + IMPL_ISO_2022_CN_TO_UNICODE_STATE_SO_2, + IMPL_ISO_2022_CN_TO_UNICODE_STATE_116432, + IMPL_ISO_2022_CN_TO_UNICODE_STATE_116432_2, + IMPL_ISO_2022_CN_TO_UNICODE_STATE_ESC, + IMPL_ISO_2022_CN_TO_UNICODE_STATE_ESC_DOLLAR, + IMPL_ISO_2022_CN_TO_UNICODE_STATE_ESC_DOLLAR_RPAREN, + IMPL_ISO_2022_CN_TO_UNICODE_STATE_ESC_DOLLAR_ASTERISK +}; + +struct ImplIso2022CnToUnicodeContext +{ + ImplIso2022CnToUnicodeState m_eState; + sal_uInt32 m_nRow; + bool m_bSo; + bool m_b116431; +}; + +enum ImplUnicodeToIso2022CnDesignator +{ + IMPL_UNICODE_TO_ISO_2022_CN_DESIGNATOR_NONE, + IMPL_UNICODE_TO_ISO_2022_CN_DESIGNATOR_2312, + IMPL_UNICODE_TO_ISO_2022_CN_DESIGNATOR_116431 +}; + +struct ImplUnicodeToIso2022CnContext +{ + sal_Unicode m_nHighSurrogate; + ImplUnicodeToIso2022CnDesignator m_eSoDesignator; + bool m_b116432Designator; + bool m_bSo; +}; + +} + +void * ImplCreateIso2022CnToUnicodeContext() +{ + ImplIso2022CnToUnicodeContext * pContext = + new ImplIso2022CnToUnicodeContext; + pContext->m_eState = IMPL_ISO_2022_CN_TO_UNICODE_STATE_ASCII; + pContext->m_bSo = false; + pContext->m_b116431 = false; + return pContext; +} + +void ImplResetIso2022CnToUnicodeContext(void * pContext) +{ + if (pContext) + { + static_cast< ImplIso2022CnToUnicodeContext * >(pContext)->m_eState + = IMPL_ISO_2022_CN_TO_UNICODE_STATE_ASCII; + static_cast< ImplIso2022CnToUnicodeContext * >(pContext)->m_bSo = false; + static_cast< ImplIso2022CnToUnicodeContext * >(pContext)->m_b116431 = false; + } +} + +void ImplDestroyIso2022CnToUnicodeContext(void * pContext) +{ + delete static_cast< ImplIso2022CnToUnicodeContext * >(pContext); +} + +sal_Size ImplConvertIso2022CnToUnicode(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 * pGb2312Data + = static_cast< ImplIso2022CnConverterData const * >(pData)-> + m_pGb2312ToUnicodeData; + sal_uInt16 const * pCns116431992Data + = static_cast< ImplIso2022CnConverterData const * >(pData)-> + m_pCns116431992ToUnicodeData; + sal_Int32 const * pCns116431992RowOffsets + = static_cast< ImplIso2022CnConverterData const * >(pData)-> + m_pCns116431992ToUnicodeRowOffsets; + sal_Int32 const * pCns116431992PlaneOffsets + = static_cast< ImplIso2022CnConverterData const * >(pData)-> + m_pCns116431992ToUnicodePlaneOffsets; + ImplIso2022CnToUnicodeState eState + = IMPL_ISO_2022_CN_TO_UNICODE_STATE_ASCII; + sal_uInt32 nRow = 0; + bool bSo = false; + bool b116431 = false; + 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< ImplIso2022CnToUnicodeContext * >(pContext)->m_eState; + nRow = static_cast< ImplIso2022CnToUnicodeContext * >(pContext)->m_nRow; + bSo = static_cast< ImplIso2022CnToUnicodeContext * >(pContext)->m_bSo; + b116431 = static_cast< ImplIso2022CnToUnicodeContext * >(pContext)->m_b116431; + } + + for (; nConverted < nSrcBytes; ++nConverted) + { + bool bUndefined = true; + sal_uInt32 nChar = *reinterpret_cast<unsigned char const *>(pSrcBuf++); + sal_uInt32 nPlane; + switch (eState) + { + case IMPL_ISO_2022_CN_TO_UNICODE_STATE_ASCII: + if (nChar == 0x0E) // SO + { + bSo = true; + eState = IMPL_ISO_2022_CN_TO_UNICODE_STATE_SO; + } + else if (nChar == 0x1B) // ESC + eState = IMPL_ISO_2022_CN_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_CN_TO_UNICODE_STATE_SO: + if (nChar == 0x0F) // SI + { + bSo = false; + eState = IMPL_ISO_2022_CN_TO_UNICODE_STATE_ASCII; + } + else if (nChar == 0x1B) // ESC + eState = IMPL_ISO_2022_CN_TO_UNICODE_STATE_ESC; + else if (nChar >= 0x21 && nChar <= 0x7E) + { + nRow = nChar; + eState = IMPL_ISO_2022_CN_TO_UNICODE_STATE_SO_2; + } + else + { + bUndefined = false; + goto bad_input; + } + break; + + case IMPL_ISO_2022_CN_TO_UNICODE_STATE_SO_2: + if (nChar >= 0x21 && nChar <= 0x7E) + if (b116431) + { + nPlane = 0; + goto transform; + } + else + { + sal_uInt16 nUnicode = 0; + sal_uInt32 nFirst; + nRow += 0x80; + nChar += 0x80; + nFirst = pGb2312Data[nRow].mnTrailStart; + if (nChar >= nFirst + && nChar <= pGb2312Data[nRow].mnTrailEnd) + nUnicode = pGb2312Data[nRow]. + mpToUniTrailTab[nChar - nFirst]; + if (nUnicode != 0) + if (pDestBufPtr != pDestBufEnd) + { + *pDestBufPtr++ = static_cast<sal_Unicode>(nUnicode); + eState = IMPL_ISO_2022_CN_TO_UNICODE_STATE_SO; + startOfCurrentChar = nConverted + 1; + } + else + goto no_output; + else + goto bad_input; + } + else + { + bUndefined = false; + goto bad_input; + } + break; + + case IMPL_ISO_2022_CN_TO_UNICODE_STATE_116432: + if (nChar >= 0x21 && nChar <= 0x7E) + { + nRow = nChar; + eState = IMPL_ISO_2022_CN_TO_UNICODE_STATE_116432_2; + } + else + { + bUndefined = false; + goto bad_input; + } + break; + + case IMPL_ISO_2022_CN_TO_UNICODE_STATE_116432_2: + if (nChar >= 0x21 && nChar <= 0x7E) + { + nPlane = 1; + goto transform; + } + else + { + bUndefined = false; + goto bad_input; + } + break; + + case IMPL_ISO_2022_CN_TO_UNICODE_STATE_ESC: + if (nChar == 0x24) // $ + eState = IMPL_ISO_2022_CN_TO_UNICODE_STATE_ESC_DOLLAR; + else if (nChar == 0x4E) // N + eState = IMPL_ISO_2022_CN_TO_UNICODE_STATE_116432; + else + { + bUndefined = false; + goto bad_input; + } + break; + + case IMPL_ISO_2022_CN_TO_UNICODE_STATE_ESC_DOLLAR: + if (nChar == 0x29) // ) + eState = IMPL_ISO_2022_CN_TO_UNICODE_STATE_ESC_DOLLAR_RPAREN; + else if (nChar == 0x2A) // * + eState + = IMPL_ISO_2022_CN_TO_UNICODE_STATE_ESC_DOLLAR_ASTERISK; + else + { + bUndefined = false; + goto bad_input; + } + break; + + case IMPL_ISO_2022_CN_TO_UNICODE_STATE_ESC_DOLLAR_RPAREN: + if (nChar == 0x41) // A + { + b116431 = false; + eState = bSo ? IMPL_ISO_2022_CN_TO_UNICODE_STATE_SO : + IMPL_ISO_2022_CN_TO_UNICODE_STATE_ASCII; + } + else if (nChar == 0x47) // G + { + b116431 = true; + eState = bSo ? IMPL_ISO_2022_CN_TO_UNICODE_STATE_SO : + IMPL_ISO_2022_CN_TO_UNICODE_STATE_ASCII; + } + else + { + bUndefined = false; + goto bad_input; + } + break; + + case IMPL_ISO_2022_CN_TO_UNICODE_STATE_ESC_DOLLAR_ASTERISK: + if (nChar == 0x48) // H + eState = bSo ? IMPL_ISO_2022_CN_TO_UNICODE_STATE_SO : + IMPL_ISO_2022_CN_TO_UNICODE_STATE_ASCII; + else + { + bUndefined = false; + goto bad_input; + } + break; + } + continue; + + transform: + { + sal_Int32 nPlaneOffset = pCns116431992PlaneOffsets[nPlane]; + if (nPlaneOffset == -1) + goto bad_input; + else + { + sal_Int32 nOffset + = pCns116431992RowOffsets[nPlaneOffset + (nRow - 0x21)]; + if (nOffset == -1) + goto bad_input; + else + { + sal_uInt32 nFirstLast = pCns116431992Data[nOffset++]; + sal_uInt32 nFirst = nFirstLast & 0xFF; + sal_uInt32 nLast = nFirstLast >> 8; + nChar -= 0x20; + if (nChar >= nFirst && nChar <= nLast) + { + sal_uInt32 nUnicode + = pCns116431992Data[nOffset + (nChar - nFirst)]; + if (nUnicode == 0xFFFF) + goto bad_input; + else if (rtl::isHighSurrogate(nUnicode)) + if (pDestBufEnd - pDestBufPtr >= 2) + { + nOffset += nLast - nFirst + 1; + nFirst = pCns116431992Data[nOffset++]; + *pDestBufPtr++ = static_cast<sal_Unicode>(nUnicode); + *pDestBufPtr++ + = static_cast<sal_Unicode>(pCns116431992Data[ + nOffset + (nChar - nFirst)]); + startOfCurrentChar = nConverted + 1; + } + else + goto no_output; + else + if (pDestBufPtr != pDestBufEnd) { + *pDestBufPtr++ = static_cast<sal_Unicode>(nUnicode); + startOfCurrentChar = nConverted + 1; + } else + goto no_output; + } + else + goto bad_input; + eState = bSo ? IMPL_ISO_2022_CN_TO_UNICODE_STATE_SO : + IMPL_ISO_2022_CN_TO_UNICODE_STATE_ASCII; + } + } + 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_CN_TO_UNICODE_STATE_ASCII; + b116431 = false; + if ((nFlags & RTL_TEXTTOUNICODE_FLAGS_FLUSH) == 0) { + ++nConverted; + } else { + nConverted = startOfCurrentChar; + } + break; + + case sal::detail::textenc::BAD_INPUT_CONTINUE: + eState = IMPL_ISO_2022_CN_TO_UNICODE_STATE_ASCII; + b116431 = false; + 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_CN_TO_UNICODE_STATE_SO + && (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_CN_TO_UNICODE_STATE_ASCII; + b116431 = false; + break; + + case sal::detail::textenc::BAD_INPUT_NO_OUTPUT: + nInfo |= RTL_TEXTTOUNICODE_INFO_DESTBUFFERTOOSMALL; + break; + } + } + + if (pContext) + { + static_cast< ImplIso2022CnToUnicodeContext * >(pContext)->m_eState = eState; + static_cast< ImplIso2022CnToUnicodeContext * >(pContext)->m_nRow = nRow; + static_cast< ImplIso2022CnToUnicodeContext * >(pContext)->m_bSo = bSo; + static_cast< ImplIso2022CnToUnicodeContext * >(pContext)->m_b116431 = b116431; + } + if (pInfo) + *pInfo = nInfo; + if (pSrcCvtBytes) + *pSrcCvtBytes = nConverted; + + return pDestBufPtr - pDestBuf; +} + +void * ImplCreateUnicodeToIso2022CnContext() +{ + ImplUnicodeToIso2022CnContext * pContext = + new ImplUnicodeToIso2022CnContext; + pContext->m_nHighSurrogate = 0; + pContext->m_eSoDesignator = IMPL_UNICODE_TO_ISO_2022_CN_DESIGNATOR_NONE; + pContext->m_b116432Designator = false; + pContext->m_bSo = false; + return pContext; +} + +void ImplResetUnicodeToIso2022CnContext(void * pContext) +{ + if (pContext) + { + static_cast< ImplUnicodeToIso2022CnContext * >(pContext)->m_nHighSurrogate = 0; + static_cast< ImplUnicodeToIso2022CnContext * >(pContext)->m_eSoDesignator + = IMPL_UNICODE_TO_ISO_2022_CN_DESIGNATOR_NONE; + static_cast< ImplUnicodeToIso2022CnContext * >(pContext)->m_b116432Designator + = false; + static_cast< ImplUnicodeToIso2022CnContext * >(pContext)->m_bSo = false; + } +} + +void ImplDestroyUnicodeToIso2022CnContext(void * pContext) +{ + delete static_cast< ImplUnicodeToIso2022CnContext * >(pContext); +} + +static sal_uInt32 ImplIso2022CnTranslateTo2312(ImplUniToDBCSHighTab const * + pGb2312Data, + sal_uInt32 nChar) +{ + sal_uInt32 nIndex1 = nChar >> 8; + if (nIndex1 < 0x100) + { + sal_uInt32 nIndex2 = nChar & 0xFF; + sal_uInt32 nFirst = pGb2312Data[nIndex1].mnLowStart; + if (nIndex2 >= nFirst && nIndex2 <= pGb2312Data[nIndex1].mnLowEnd) + return pGb2312Data[nIndex1].mpToUniTrailTab[nIndex2 - nFirst] + & 0x7F7F; + } + return 0; +} + +static sal_uInt32 +ImplIso2022CnTranslateTo116431(sal_uInt8 const * pCns116431992Data, + sal_Int32 const * pCns116431992PageOffsets, + sal_Int32 const * pCns116431992PlaneOffsets, + sal_uInt32 nChar) +{ + sal_Int32 nOffset = pCns116431992PlaneOffsets[nChar >> 16]; + sal_uInt32 nFirst; + sal_uInt32 nLast; + sal_uInt32 nPlane; + if (nOffset == -1) + return 0; + nOffset = pCns116431992PageOffsets[nOffset + ((nChar & 0xFF00) >> 8)]; + if (nOffset == -1) + return 0; + nFirst = pCns116431992Data[nOffset++]; + nLast = pCns116431992Data[nOffset++]; + nChar &= 0xFF; + if (nChar < nFirst || nChar > nLast) + return 0; + nOffset += 3 * (nChar - nFirst); + nPlane = pCns116431992Data[nOffset++]; + if (nPlane != 1) + return 0; + return (0x20 + pCns116431992Data[nOffset]) << 8 + | (0x20 + pCns116431992Data[nOffset + 1]); +} + +sal_Size ImplConvertUnicodeToIso2022Cn(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 * pGb2312Data + = static_cast< ImplIso2022CnConverterData const * >(pData)-> + m_pUnicodeToGb2312Data; + sal_uInt8 const * pCns116431992Data + = static_cast< ImplIso2022CnConverterData const * >(pData)-> + m_pUnicodeToCns116431992Data; + sal_Int32 const * pCns116431992PageOffsets + = static_cast< ImplIso2022CnConverterData const * >(pData)-> + m_pUnicodeToCns116431992PageOffsets; + sal_Int32 const * pCns116431992PlaneOffsets + = static_cast< ImplIso2022CnConverterData const * >(pData)-> + m_pUnicodeToCns116431992PlaneOffsets; + sal_Unicode nHighSurrogate = 0; + ImplUnicodeToIso2022CnDesignator eSoDesignator + = IMPL_UNICODE_TO_ISO_2022_CN_DESIGNATOR_NONE; + bool b116432Designator = false; + bool bSo = false; + sal_uInt32 nInfo = 0; + sal_Size nConverted = 0; + char * pDestBufPtr = pDestBuf; + char * pDestBufEnd = pDestBuf + nDestBytes; + bool bWritten; + + if (pContext) + { + nHighSurrogate + = static_cast< ImplUnicodeToIso2022CnContext * >(pContext)->m_nHighSurrogate; + eSoDesignator + = static_cast< ImplUnicodeToIso2022CnContext * >(pContext)->m_eSoDesignator; + b116432Designator = static_cast< ImplUnicodeToIso2022CnContext * >(pContext)-> + m_b116432Designator; + bSo = static_cast< ImplUnicodeToIso2022CnContext * >(pContext)->m_bSo; + } + + 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 (bSo) + { + if (pDestBufPtr != pDestBufEnd) + { + *pDestBufPtr++ = 0x0F; // SI + bSo = false; + eSoDesignator + = IMPL_UNICODE_TO_ISO_2022_CN_DESIGNATOR_NONE; + b116432Designator = false; + } + else + goto no_output; + } + if (pDestBufPtr != pDestBufEnd) + *pDestBufPtr++ = static_cast< char >(nChar); + else + goto no_output; + } + else if (nChar == 0x0E || nChar == 0x0F || nChar == 0x1B) + goto bad_input; + else if (nChar < 0x80) + { + if (bSo) + { + if (pDestBufPtr != pDestBufEnd) + { + *pDestBufPtr++ = 0x0F; // SI + bSo = false; + } + else + goto no_output; + } + if (pDestBufPtr != pDestBufEnd) + *pDestBufPtr++ = static_cast< char >(nChar); + else + goto no_output; + } + else + { + sal_uInt32 nBytes = 0; + ImplUnicodeToIso2022CnDesignator eNewDesignator = + IMPL_UNICODE_TO_ISO_2022_CN_DESIGNATOR_NONE; + switch (eSoDesignator) + { + case IMPL_UNICODE_TO_ISO_2022_CN_DESIGNATOR_NONE: + nBytes = ImplIso2022CnTranslateTo2312(pGb2312Data, nChar); + if (nBytes != 0) + { + eNewDesignator + = IMPL_UNICODE_TO_ISO_2022_CN_DESIGNATOR_2312; + break; + } + nBytes = ImplIso2022CnTranslateTo116431( + pCns116431992Data, + pCns116431992PageOffsets, + pCns116431992PlaneOffsets, + nChar); + if (nBytes != 0) + { + eNewDesignator + = IMPL_UNICODE_TO_ISO_2022_CN_DESIGNATOR_116431; + break; + } + break; + + case IMPL_UNICODE_TO_ISO_2022_CN_DESIGNATOR_2312: + nBytes = ImplIso2022CnTranslateTo2312(pGb2312Data, nChar); + if (nBytes != 0) + { + eNewDesignator + = IMPL_UNICODE_TO_ISO_2022_CN_DESIGNATOR_NONE; + break; + } + nBytes = ImplIso2022CnTranslateTo116431( + pCns116431992Data, + pCns116431992PageOffsets, + pCns116431992PlaneOffsets, + nChar); + if (nBytes != 0) + { + eNewDesignator + = IMPL_UNICODE_TO_ISO_2022_CN_DESIGNATOR_116431; + break; + } + break; + + case IMPL_UNICODE_TO_ISO_2022_CN_DESIGNATOR_116431: + nBytes = ImplIso2022CnTranslateTo116431( + pCns116431992Data, + pCns116431992PageOffsets, + pCns116431992PlaneOffsets, + nChar); + if (nBytes != 0) + { + eNewDesignator + = IMPL_UNICODE_TO_ISO_2022_CN_DESIGNATOR_NONE; + break; + } + nBytes = ImplIso2022CnTranslateTo2312(pGb2312Data, nChar); + if (nBytes != 0) + { + eNewDesignator + = IMPL_UNICODE_TO_ISO_2022_CN_DESIGNATOR_2312; + break; + } + break; + } + if (nBytes != 0) + { + if (eNewDesignator + != IMPL_UNICODE_TO_ISO_2022_CN_DESIGNATOR_NONE) + { + if (bSo) + { + if (pDestBufPtr != pDestBufEnd) + { + *pDestBufPtr++ = 0x0F; // SI + bSo = false; + } + else + goto no_output; + } + if (pDestBufEnd - pDestBufPtr >= 4) + { + *pDestBufPtr++ = 0x1B; // ESC + *pDestBufPtr++ = 0x24; // $ + *pDestBufPtr++ = 0x29; // ) + *pDestBufPtr++ + = eNewDesignator + == IMPL_UNICODE_TO_ISO_2022_CN_DESIGNATOR_2312 ? + 0x41 : 0x47; // A, G + eSoDesignator = eNewDesignator; + } + else + goto no_output; + } + if (!bSo) + { + if (pDestBufPtr != pDestBufEnd) + { + *pDestBufPtr++ = 0x0E; // SO + bSo = true; + } + else + goto no_output; + } + if (pDestBufEnd - pDestBufPtr >= 4) + { + *pDestBufPtr++ = static_cast< char >(nBytes >> 8); + *pDestBufPtr++ = static_cast< char >(nBytes & 0xFF); + } + else + goto no_output; + } + else + { + sal_Int32 nOffset = pCns116431992PlaneOffsets[nChar >> 16]; + sal_uInt32 nFirst; + sal_uInt32 nLast; + sal_uInt32 nPlane; + if (nOffset == -1) + goto bad_input; + nOffset + = pCns116431992PageOffsets[nOffset + + ((nChar & 0xFF00) >> 8)]; + if (nOffset == -1) + goto bad_input; + nFirst = pCns116431992Data[nOffset++]; + nLast = pCns116431992Data[nOffset++]; + nChar &= 0xFF; + if (nChar < nFirst || nChar > nLast) + goto bad_input; + nOffset += 3 * (nChar - nFirst); + nPlane = pCns116431992Data[nOffset++]; + if (nPlane != 2) + goto bad_input; + if (!b116432Designator) + { + if (pDestBufEnd - pDestBufPtr >= 4) + { + *pDestBufPtr++ = 0x1B; // ESC + *pDestBufPtr++ = 0x24; // $ + *pDestBufPtr++ = 0x2A; // * + *pDestBufPtr++ = 0x48; // H + b116432Designator = true; + } + else + goto no_output; + } + if (pDestBufEnd - pDestBufPtr >= 4) + { + *pDestBufPtr++ = 0x1B; // ESC + *pDestBufPtr++ = 0x4E; // N + *pDestBufPtr++ + = static_cast< char >(0x20 + pCns116431992Data[nOffset++]); + *pDestBufPtr++ + = static_cast< char >(0x20 + pCns116431992Data[nOffset]); + } + else + goto no_output; + } + } + nHighSurrogate = 0; + continue; + + bad_input: + switch (sal::detail::textenc::handleBadInputUnicodeToTextConversion( + bUndefined, nChar, nFlags, &pDestBufPtr, pDestBufEnd, + &nInfo, "\x0F" /* SI */, bSo ? 1 : 0, &bWritten)) + { + case sal::detail::textenc::BAD_INPUT_STOP: + nHighSurrogate = 0; + break; + + case sal::detail::textenc::BAD_INPUT_CONTINUE: + if (bWritten) + bSo = 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, + "\x0F" /* SI */, bSo ? 1 : 0, &bWritten)) + { + case sal::detail::textenc::BAD_INPUT_STOP: + nHighSurrogate = 0; + bFlush = false; + break; + + case sal::detail::textenc::BAD_INPUT_CONTINUE: + if (bWritten) + bSo = false; + nHighSurrogate = 0; + break; + + case sal::detail::textenc::BAD_INPUT_NO_OUTPUT: + nInfo |= RTL_UNICODETOTEXT_INFO_DESTBUFFERTOSMALL; + break; + } + } + if (bFlush && bSo && (nFlags & RTL_UNICODETOTEXT_FLAGS_FLUSH) != 0) + { + if (pDestBufPtr != pDestBufEnd) + { + *pDestBufPtr++ = 0x0F; // SI + bSo = false; + } + else + nInfo |= RTL_UNICODETOTEXT_INFO_DESTBUFFERTOSMALL; + } + } + + if (pContext) + { + static_cast< ImplUnicodeToIso2022CnContext * >(pContext)->m_nHighSurrogate + = nHighSurrogate; + static_cast< ImplUnicodeToIso2022CnContext * >(pContext)->m_eSoDesignator + = eSoDesignator; + static_cast< ImplUnicodeToIso2022CnContext * >(pContext)->m_b116432Designator + = b116432Designator; + static_cast< ImplUnicodeToIso2022CnContext * >(pContext)->m_bSo = bSo; + } + if (pInfo) + *pInfo = nInfo; + if (pSrcCvtChars) + *pSrcCvtChars = nConverted; + + return pDestBufPtr - pDestBuf; +} + +/* vim:set shiftwidth=4 softtabstop=4 expandtab: */ |