/* -*- 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 #include #include #include #include #include "converter.hxx" #include "convertiso2022jp.hxx" #include "tenchelp.hxx" #include "unichars.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(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(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(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(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(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: */ ure/gsoc14-personas2 LibreOffice 核心代码仓库文档基金会
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