Adding upstream version 1:7.0.4.upstream/1%7.0.4upstream

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

1 files changed, 501 insertions, 0 deletions

diff --git a/sal/textenc/convertbig5hkscs.cxx b/sal/textenc/convertbig5hkscs.cxx
new file mode 100644
index 000000000..774846669
--- /dev/null
+++ b/sal/textenc/convertbig5hkscs.cxx
@@ -0,0 +1,501 @@
+/* -*- 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 "convertbig5hkscs.hxx"
+#include "converter.hxx"
+#include "tenchelp.hxx"
+#include "unichars.hxx"
+
+namespace {
+
+struct ImplBig5HkscsToUnicodeContext
+{
+    sal_Int32 m_nRow; // 0--255; 0 means none
+};
+
+}
+
+void * ImplCreateBig5HkscsToUnicodeContext()
+{
+    ImplBig5HkscsToUnicodeContext * pContext =
+        new ImplBig5HkscsToUnicodeContext;
+    pContext->m_nRow = 0;
+    return pContext;
+}
+
+void ImplResetBig5HkscsToUnicodeContext(void * pContext)
+{
+    if (pContext)
+        static_cast< ImplBig5HkscsToUnicodeContext * >(pContext)->m_nRow = 0;
+}
+
+void ImplDestroyBig5HkscsToUnicodeContext(void * pContext)
+{
+    delete static_cast< ImplBig5HkscsToUnicodeContext * >(pContext);
+}
+
+sal_Size ImplConvertBig5HkscsToUnicode(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 * pBig5Hkscs2001Data
+        = static_cast< ImplBig5HkscsConverterData const * >(pData)->
+              m_pBig5Hkscs2001ToUnicodeData;
+    sal_Int32 const * pBig5Hkscs2001RowOffsets
+        = static_cast< ImplBig5HkscsConverterData const * >(pData)->
+              m_pBig5Hkscs2001ToUnicodeRowOffsets;
+    ImplDBCSToUniLeadTab const * pBig5Data
+        = static_cast< ImplBig5HkscsConverterData const * >(pData)->
+              m_pBig5ToUnicodeData;
+    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)
+        nRow = static_cast< ImplBig5HkscsToUnicodeContext * >(pContext)->m_nRow;
+
+    for (; nConverted < nSrcBytes; ++nConverted)
+    {
+        bool bUndefined = true;
+        sal_uInt32 nChar = *reinterpret_cast<unsigned char const *>(pSrcBuf++);
+        if (nRow == 0)
+            if (nChar < 0x80)
+                if (pDestBufPtr != pDestBufEnd) {
+                    *pDestBufPtr++ = static_cast<sal_Unicode>(nChar);
+                    startOfCurrentChar = nConverted + 1;
+                } else
+                    goto no_output;
+            else if (nChar >= 0x81 && nChar <= 0xFE)
+                nRow = nChar;
+            else
+            {
+                bUndefined = false;
+                goto bad_input;
+            }
+        else
+            if ((nChar >= 0x40 && nChar <= 0x7E)
+                || (nChar >= 0xA1 && nChar <= 0xFE))
+            {
+                sal_uInt32 nUnicode = 0xFFFF;
+                sal_Int32 nOffset = pBig5Hkscs2001RowOffsets[nRow];
+                sal_uInt32 nFirst=0;
+                sal_uInt32 nLast=0;
+                if (nOffset != -1)
+                {
+                    sal_uInt32 nFirstLast = pBig5Hkscs2001Data[nOffset++];
+                    nFirst = nFirstLast & 0xFF;
+                    nLast = nFirstLast >> 8;
+                    if (nChar >= nFirst && nChar <= nLast)
+                        nUnicode
+                            = pBig5Hkscs2001Data[nOffset + (nChar - nFirst)];
+                }
+                if (nUnicode == 0xFFFF)
+                {
+                    sal_uInt32 n = pBig5Data[nRow].mnTrailStart;
+                    if (nChar >= n && nChar <= pBig5Data[nRow].mnTrailEnd)
+                    {
+                        nUnicode = pBig5Data[nRow].mpToUniTrailTab[nChar - n];
+                        if (nUnicode == 0)
+                            nUnicode = 0xFFFF;
+                        assert(!ImplIsHighSurrogate(nUnicode));
+                    }
+                }
+                if (nUnicode == 0xFFFF)
+                {
+                    ImplDBCSEUDCData const * p
+                        = static_cast< ImplBig5HkscsConverterData const * >(pData)->
+                              m_pEudcData;
+                    sal_uInt32 nCount
+                        = static_cast< ImplBig5HkscsConverterData const * >(pData)->
+                              m_nEudcCount;
+                    sal_uInt32 i;
+                    for (i = 0; i < nCount; ++i)
+                    {
+                        if (nRow >= p->mnLeadStart && nRow <= p->mnLeadEnd)
+                        {
+                            if (nChar < p->mnTrail1Start)
+                                break;
+                            if (nChar <= p->mnTrail1End)
+                            {
+                                nUnicode
+                                    = p->mnUniStart
+                                          + (nRow - p->mnLeadStart)
+                                                * p->mnTrailRangeCount
+                                          + (nChar - p->mnTrail1Start);
+                                break;
+                            }
+                            if (p->mnTrailCount < 2
+                                || nChar < p->mnTrail2Start)
+                                break;
+                            if (nChar <= p->mnTrail2End)
+                            {
+                                nUnicode
+                                    = p->mnUniStart
+                                          + (nRow - p->mnLeadStart)
+                                                * p->mnTrailRangeCount
+                                          + (nChar - p->mnTrail2Start)
+                                          + (p->mnTrail1End - p->mnTrail1Start
+                                                 + 1);
+                                break;
+                            }
+                            if (p->mnTrailCount < 3
+                                || nChar < p->mnTrail3Start)
+                                break;
+                            if (nChar <= p->mnTrail3End)
+                            {
+                                nUnicode
+                                    = p->mnUniStart
+                                          + (nRow - p->mnLeadStart)
+                                                * p->mnTrailRangeCount
+                                          + (nChar - p->mnTrail3Start)
+                                          + (p->mnTrail1End - p->mnTrail1Start
+                                                 + 1)
+                                          + (p->mnTrail2End - p->mnTrail2Start
+                                                 + 1);
+                                break;
+                            }
+                            break;
+                        }
+                        ++p;
+                    }
+                    assert(!ImplIsHighSurrogate(nUnicode));
+                }
+                if (nUnicode == 0xFFFF)
+                    goto bad_input;
+                if (ImplIsHighSurrogate(nUnicode))
+                    if (pDestBufEnd - pDestBufPtr >= 2)
+                    {
+                        nOffset += nLast - nFirst + 1;
+                        nFirst = pBig5Hkscs2001Data[nOffset++];
+                        *pDestBufPtr++ = static_cast<sal_Unicode>(nUnicode);
+                        *pDestBufPtr++
+                            = static_cast<sal_Unicode>(pBig5Hkscs2001Data[
+                                                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;
+                nRow = 0;
+            }
+            else
+            {
+                bUndefined = false;
+                goto bad_input;
+            }
+        continue;
+
+    bad_input:
+        switch (sal::detail::textenc::handleBadInputTextToUnicodeConversion(
+                    bUndefined, true, 0, nFlags, &pDestBufPtr, pDestBufEnd,
+                    &nInfo))
+        {
+        case sal::detail::textenc::BAD_INPUT_STOP:
+            nRow = 0;
+            if ((nFlags & RTL_TEXTTOUNICODE_FLAGS_FLUSH) == 0) {
+                ++nConverted;
+            } else {
+                nConverted = startOfCurrentChar;
+            }
+            break;
+
+        case sal::detail::textenc::BAD_INPUT_CONTINUE:
+            nRow = 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 (nRow != 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:
+                nRow = 0;
+                break;
+
+            case sal::detail::textenc::BAD_INPUT_NO_OUTPUT:
+                nInfo |= RTL_TEXTTOUNICODE_INFO_DESTBUFFERTOOSMALL;
+                break;
+            }
+    }
+
+    if (pContext)
+        static_cast< ImplBig5HkscsToUnicodeContext * >(pContext)->m_nRow = nRow;
+    if (pInfo)
+        *pInfo = nInfo;
+    if (pSrcCvtBytes)
+        *pSrcCvtBytes = nConverted;
+
+    return pDestBufPtr - pDestBuf;
+}
+
+sal_Size ImplConvertUnicodeToBig5Hkscs(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_uInt16 const * pBig5Hkscs2001Data
+        = static_cast< ImplBig5HkscsConverterData const * >(pData)->
+              m_pUnicodeToBig5Hkscs2001Data;
+    sal_Int32 const * pBig5Hkscs2001PageOffsets
+        = static_cast< ImplBig5HkscsConverterData const * >(pData)->
+              m_pUnicodeToBig5Hkscs2001PageOffsets;
+    sal_Int32 const * pBig5Hkscs2001PlaneOffsets
+        = static_cast< ImplBig5HkscsConverterData const * >(pData)->
+              m_pUnicodeToBig5Hkscs2001PlaneOffsets;
+    ImplUniToDBCSHighTab const * pBig5Data
+        = static_cast< ImplBig5HkscsConverterData const * >(pData)->
+              m_pUnicodeToBig5Data;
+    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 (ImplIsHighSurrogate(nChar))
+            {
+                nHighSurrogate = static_cast<sal_Unicode>(nChar);
+                continue;
+            }
+            else if (ImplIsLowSurrogate(nChar))
+            {
+                bUndefined = false;
+                goto bad_input;
+            }
+        }
+        else if (ImplIsLowSurrogate(nChar))
+            nChar = ImplCombineSurrogates(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_uInt32 nBytes = 0;
+            sal_Int32 nOffset = pBig5Hkscs2001PlaneOffsets[nChar >> 16];
+            if (nOffset != -1)
+            {
+                nOffset
+                    = pBig5Hkscs2001PageOffsets[nOffset + ((nChar & 0xFF00)
+                                                               >> 8)];
+                if (nOffset != -1)
+                {
+                    sal_uInt32 nFirstLast = pBig5Hkscs2001Data[nOffset++];
+                    sal_uInt32 nFirst = nFirstLast & 0xFF;
+                    sal_uInt32 nLast = nFirstLast >> 8;
+                    sal_uInt32 nIndex = nChar & 0xFF;
+                    if (nIndex >= nFirst && nIndex <= nLast)
+                    {
+                        nBytes
+                            = pBig5Hkscs2001Data[nOffset + (nIndex - nFirst)];
+                    }
+                }
+            }
+            if (nBytes == 0)
+            {
+                sal_uInt32 nIndex1 = nChar >> 8;
+                if (nIndex1 < 0x100)
+                {
+                    sal_uInt32 nIndex2 = nChar & 0xFF;
+                    sal_uInt32 nFirst = pBig5Data[nIndex1].mnLowStart;
+                    if (nIndex2 >= nFirst
+                        && nIndex2 <= pBig5Data[nIndex1].mnLowEnd)
+                        nBytes = pBig5Data[nIndex1].
+                                     mpToUniTrailTab[nIndex2 - nFirst];
+                }
+            }
+            if (nBytes == 0)
+            {
+                ImplDBCSEUDCData const * p
+                    = static_cast< ImplBig5HkscsConverterData const * >(pData)->
+                          m_pEudcData;
+                sal_uInt32 nCount
+                    = static_cast< ImplBig5HkscsConverterData const * >(pData)->
+                          m_nEudcCount;
+                sal_uInt32 i;
+                for (i = 0; i < nCount; ++i) {
+                    if (nChar >= p->mnUniStart && nChar <= p->mnUniEnd)
+                    {
+                        sal_uInt32 nIndex = nChar - p->mnUniStart;
+                        sal_uInt32 nLeadOff = nIndex / p->mnTrailRangeCount;
+                        sal_uInt32 nTrailOff = nIndex % p->mnTrailRangeCount;
+                        sal_uInt32 nSize;
+                        nBytes = (p->mnLeadStart + nLeadOff) << 8;
+                        nSize = p->mnTrail1End - p->mnTrail1Start + 1;
+                        if (nTrailOff < nSize)
+                        {
+                            nBytes |= p->mnTrail1Start + nTrailOff;
+                            break;
+                        }
+                        nTrailOff -= nSize;
+                        nSize = p->mnTrail2End - p->mnTrail2Start + 1;
+                        if (nTrailOff < nSize)
+                        {
+                            nBytes |= p->mnTrail2Start + nTrailOff;
+                            break;
+                        }
+                        nTrailOff -= nSize;
+                        nBytes |= p->mnTrail3Start + nTrailOff;
+                        break;
+                    }
+                    ++p;
+                }
+            }
+            if (nBytes == 0)
+                goto bad_input;
+            if (pDestBufEnd - pDestBufPtr >= 2)
+            {
+                *pDestBufPtr++ = static_cast< char >(nBytes >> 8);
+                *pDestBufPtr++ = static_cast< char >(nBytes & 0xFF);
+            }
+            else
+                goto no_output;
+        }
+        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: */