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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 09:06:44 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 09:06:44 +0000
commited5640d8b587fbcfed7dd7967f3de04b37a76f26 (patch)
tree7a5f7c6c9d02226d7471cb3cc8fbbf631b415303 /sal/textenc/converteuctw.cxx
parentInitial commit. (diff)
downloadlibreoffice-ed5640d8b587fbcfed7dd7967f3de04b37a76f26.tar.xz
libreoffice-ed5640d8b587fbcfed7dd7967f3de04b37a76f26.zip
Adding upstream version 4:7.4.7.upstream/4%7.4.7upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'sal/textenc/converteuctw.cxx')
-rw-r--r--sal/textenc/converteuctw.cxx461
1 files changed, 461 insertions, 0 deletions
diff --git a/sal/textenc/converteuctw.cxx b/sal/textenc/converteuctw.cxx
new file mode 100644
index 000000000..8684b643c
--- /dev/null
+++ b/sal/textenc/converteuctw.cxx
@@ -0,0 +1,461 @@
+/* -*- 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 "context.hxx"
+#include "converter.hxx"
+#include "converteuctw.hxx"
+#include "tenchelp.hxx"
+#include "unichars.hxx"
+
+namespace {
+
+enum ImplEucTwToUnicodeState
+{
+ IMPL_EUC_TW_TO_UNICODE_STATE_0,
+ IMPL_EUC_TW_TO_UNICODE_STATE_1,
+ IMPL_EUC_TW_TO_UNICODE_STATE_2_1,
+ IMPL_EUC_TW_TO_UNICODE_STATE_2_2,
+ IMPL_EUC_TW_TO_UNICODE_STATE_2_3
+};
+
+struct ImplEucTwToUnicodeContext
+{
+ ImplEucTwToUnicodeState m_eState;
+ sal_Int32 m_nPlane; // 0--15
+ sal_Int32 m_nRow; // 0--93
+};
+
+}
+
+void * ImplCreateEucTwToUnicodeContext()
+{
+ ImplEucTwToUnicodeContext * pContext = new ImplEucTwToUnicodeContext;
+ pContext->m_eState = IMPL_EUC_TW_TO_UNICODE_STATE_0;
+ return pContext;
+}
+
+void ImplResetEucTwToUnicodeContext(void * pContext)
+{
+ if (pContext)
+ static_cast< ImplEucTwToUnicodeContext * >(pContext)->m_eState
+ = IMPL_EUC_TW_TO_UNICODE_STATE_0;
+}
+
+void ImplDestroyEucTwToUnicodeContext(void * pContext)
+{
+ delete static_cast< ImplEucTwToUnicodeContext * >(pContext);
+}
+
+sal_Size ImplConvertEucTwToUnicode(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_uInt16 const * pCns116431992Data
+ = static_cast< ImplEucTwConverterData const * >(pData)->
+ m_pCns116431992ToUnicodeData;
+ sal_Int32 const * pCns116431992RowOffsets
+ = static_cast< ImplEucTwConverterData const * >(pData)->
+ m_pCns116431992ToUnicodeRowOffsets;
+ sal_Int32 const * pCns116431992PlaneOffsets
+ = static_cast< ImplEucTwConverterData const * >(pData)->
+ m_pCns116431992ToUnicodePlaneOffsets;
+ ImplEucTwToUnicodeState eState = IMPL_EUC_TW_TO_UNICODE_STATE_0;
+ sal_Int32 nPlane = 0;
+ sal_Int32 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< ImplEucTwToUnicodeContext * >(pContext)->m_eState;
+ nPlane = static_cast< ImplEucTwToUnicodeContext * >(pContext)->m_nPlane;
+ nRow = static_cast< ImplEucTwToUnicodeContext * >(pContext)->m_nRow;
+ }
+
+ for (; nConverted < nSrcBytes; ++nConverted)
+ {
+ bool bUndefined = true;
+ sal_uInt32 nChar = *reinterpret_cast<unsigned char const *>(pSrcBuf++);
+ switch (eState)
+ {
+ case IMPL_EUC_TW_TO_UNICODE_STATE_0:
+ if (nChar < 0x80)
+ if (pDestBufPtr != pDestBufEnd) {
+ *pDestBufPtr++ = static_cast<sal_Unicode>(nChar);
+ startOfCurrentChar = nConverted + 1;
+ } else
+ goto no_output;
+ else if (nChar >= 0xA1 && nChar <= 0xFE)
+ {
+ nRow = nChar - 0xA1;
+ eState = IMPL_EUC_TW_TO_UNICODE_STATE_1;
+ }
+ else if (nChar == 0x8E)
+ eState = IMPL_EUC_TW_TO_UNICODE_STATE_2_1;
+ else
+ {
+ bUndefined = false;
+ goto bad_input;
+ }
+ break;
+
+ case IMPL_EUC_TW_TO_UNICODE_STATE_1:
+ if (nChar >= 0xA1 && nChar <= 0xFE)
+ {
+ nPlane = 0;
+ goto transform;
+ }
+ else
+ {
+ bUndefined = false;
+ goto bad_input;
+ }
+ break;
+
+ case IMPL_EUC_TW_TO_UNICODE_STATE_2_1:
+ if (nChar >= 0xA1 && nChar <= 0xB0)
+ {
+ nPlane = nChar - 0xA1;
+ eState = IMPL_EUC_TW_TO_UNICODE_STATE_2_2;
+ }
+ else
+ {
+ bUndefined = false;
+ goto bad_input;
+ }
+ break;
+
+ case IMPL_EUC_TW_TO_UNICODE_STATE_2_2:
+ if (nChar >= 0xA1 && nChar <= 0xFE)
+ {
+ nRow = nChar - 0xA1;
+ eState = IMPL_EUC_TW_TO_UNICODE_STATE_2_3;
+ }
+ else
+ {
+ bUndefined = false;
+ goto bad_input;
+ }
+ break;
+
+ case IMPL_EUC_TW_TO_UNICODE_STATE_2_3:
+ if (nChar >= 0xA1 && nChar <= 0xFE)
+ goto transform;
+ 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];
+ if (nOffset == -1)
+ goto bad_input;
+ else
+ {
+ sal_uInt32 nFirstLast = pCns116431992Data[nOffset++];
+ sal_uInt32 nFirst = nFirstLast & 0xFF;
+ sal_uInt32 nLast = nFirstLast >> 8;
+ nChar -= 0xA0;
+ 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 = IMPL_EUC_TW_TO_UNICODE_STATE_0;
+ }
+ }
+ continue;
+ }
+
+ bad_input:
+ switch (sal::detail::textenc::handleBadInputTextToUnicodeConversion(
+ bUndefined, true, 0, nFlags, &pDestBufPtr, pDestBufEnd,
+ &nInfo))
+ {
+ case sal::detail::textenc::BAD_INPUT_STOP:
+ eState = IMPL_EUC_TW_TO_UNICODE_STATE_0;
+ if ((nFlags & RTL_TEXTTOUNICODE_FLAGS_FLUSH) == 0) {
+ ++nConverted;
+ } else {
+ nConverted = startOfCurrentChar;
+ }
+ break;
+
+ case sal::detail::textenc::BAD_INPUT_CONTINUE:
+ eState = IMPL_EUC_TW_TO_UNICODE_STATE_0;
+ 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_EUC_TW_TO_UNICODE_STATE_0
+ && (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_EUC_TW_TO_UNICODE_STATE_0;
+ break;
+
+ case sal::detail::textenc::BAD_INPUT_NO_OUTPUT:
+ nInfo |= RTL_TEXTTOUNICODE_INFO_DESTBUFFERTOOSMALL;
+ break;
+ }
+ }
+
+ if (pContext)
+ {
+ static_cast< ImplEucTwToUnicodeContext * >(pContext)->m_eState = eState;
+ static_cast< ImplEucTwToUnicodeContext * >(pContext)->m_nPlane = nPlane;
+ static_cast< ImplEucTwToUnicodeContext * >(pContext)->m_nRow = nRow;
+ }
+ if (pInfo)
+ *pInfo = nInfo;
+ if (pSrcCvtBytes)
+ *pSrcCvtBytes = nConverted;
+
+ return pDestBufPtr - pDestBuf;
+}
+
+sal_Size ImplConvertUnicodeToEucTw(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_uInt8 const * pCns116431992Data
+ = static_cast< ImplEucTwConverterData const * >(pData)->
+ m_pUnicodeToCns116431992Data;
+ sal_Int32 const * pCns116431992PageOffsets
+ = static_cast< ImplEucTwConverterData const * >(pData)->
+ m_pUnicodeToCns116431992PageOffsets;
+ sal_Int32 const * pCns116431992PlaneOffsets
+ = static_cast< ImplEucTwConverterData const * >(pData)->
+ m_pUnicodeToCns116431992PlaneOffsets;
+ 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 (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 < 0x80)
+ if (pDestBufPtr != pDestBufEnd)
+ *pDestBufPtr++ = static_cast< char >(nChar);
+ 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 == 0)
+ goto bad_input;
+ if (pDestBufEnd - pDestBufPtr < (nPlane == 1 ? 2 : 4))
+ goto no_output;
+ if (nPlane != 1)
+ {
+ *pDestBufPtr++ = static_cast< char >(static_cast< unsigned char >(0x8E));
+ *pDestBufPtr++ = static_cast< char >(0xA0 + nPlane);
+ }
+ *pDestBufPtr++ = static_cast< char >(0xA0 + pCns116431992Data[nOffset++]);
+ *pDestBufPtr++ = static_cast< char >(0xA0 + pCns116431992Data[nOffset]);
+ }
+ nHighSurrogate = 0;
+ continue;
+
+ bad_input:
+ switch (sal::detail::textenc::handleBadInputUnicodeToTextConversion(
+ bUndefined, nChar, nFlags, &pDestBufPtr, pDestBufEnd,
+ &nInfo, nullptr, 0, nullptr))
+ {
+ 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,
+ nullptr, 0, nullptr))
+ {
+ 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: */