Adding upstream version 4:7.4.7.upstream/4%7.4.7upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

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: */