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, 475 insertions, 0 deletions

diff --git a/sal/textenc/convertgb18030.cxx b/sal/textenc/convertgb18030.cxx
new file mode 100644
index 000000000..d7963762f
--- /dev/null
+++ b/sal/textenc/convertgb18030.cxx
@@ -0,0 +1,475 @@
+/* -*- 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 "convertgb18030.hxx"
+#include "tenchelp.hxx"
+#include "unichars.hxx"
+
+namespace {
+
+enum ImplGb18030ToUnicodeState
+{
+    IMPL_GB_18030_TO_UNICODE_STATE_0,
+    IMPL_GB_18030_TO_UNICODE_STATE_1,
+    IMPL_GB_18030_TO_UNICODE_STATE_2,
+    IMPL_GB_18030_TO_UNICODE_STATE_3
+};
+
+struct ImplGb18030ToUnicodeContext
+{
+    ImplGb18030ToUnicodeState m_eState;
+    sal_uInt32 m_nCode;
+};
+
+}
+
+void * ImplCreateGb18030ToUnicodeContext()
+{
+    ImplGb18030ToUnicodeContext * pContext = new ImplGb18030ToUnicodeContext;
+    pContext->m_eState = IMPL_GB_18030_TO_UNICODE_STATE_0;
+    return pContext;
+}
+
+void ImplResetGb18030ToUnicodeContext(void * pContext)
+{
+    if (pContext)
+        static_cast< ImplGb18030ToUnicodeContext * >(pContext)->m_eState
+            = IMPL_GB_18030_TO_UNICODE_STATE_0;
+}
+
+void ImplDestroyGb18030ToUnicodeContext(void * pContext)
+{
+    delete static_cast< ImplGb18030ToUnicodeContext * >(pContext);
+}
+
+sal_Size ImplConvertGb18030ToUnicode(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_Unicode const * pGb18030Data
+        = static_cast< ImplGb18030ConverterData const * >(pData)->m_pGb18030ToUnicodeData;
+    ImplGb180302000ToUnicodeRange const * pGb18030Ranges
+        = static_cast< ImplGb18030ConverterData const * >(pData)->
+              m_pGb18030ToUnicodeRanges;
+    ImplGb18030ToUnicodeState eState = IMPL_GB_18030_TO_UNICODE_STATE_0;
+    sal_uInt32 nCode = 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< ImplGb18030ToUnicodeContext * >(pContext)->m_eState;
+        nCode = static_cast< ImplGb18030ToUnicodeContext * >(pContext)->m_nCode;
+    }
+
+    for (; nConverted < nSrcBytes; ++nConverted)
+    {
+        bool bUndefined = true;
+        sal_uInt32 nChar = *reinterpret_cast<unsigned char const *>(pSrcBuf++);
+        switch (eState)
+        {
+        case IMPL_GB_18030_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 == 0x80)
+                goto bad_input;
+            else if (nChar <= 0xFE)
+            {
+                nCode = nChar - 0x81;
+                eState = IMPL_GB_18030_TO_UNICODE_STATE_1;
+            }
+            else
+            {
+                bUndefined = false;
+                goto bad_input;
+            }
+            break;
+
+        case IMPL_GB_18030_TO_UNICODE_STATE_1:
+            if (nChar >= 0x30 && nChar <= 0x39)
+            {
+                nCode = nCode * 10 + (nChar - 0x30);
+                eState = IMPL_GB_18030_TO_UNICODE_STATE_2;
+            }
+            else if ((nChar >= 0x40 && nChar <= 0x7E)
+                     || (nChar >= 0x80 && nChar <= 0xFE))
+            {
+                nCode = nCode * 190 + (nChar <= 0x7E ? nChar - 0x40 :
+                                                       nChar - 0x80 + 63);
+                if (pDestBufPtr != pDestBufEnd) {
+                    *pDestBufPtr++ = pGb18030Data[nCode];
+                    startOfCurrentChar = nConverted + 1;
+                } else
+                    goto no_output;
+                eState = IMPL_GB_18030_TO_UNICODE_STATE_0;
+            }
+            else
+            {
+                bUndefined = false;
+                goto bad_input;
+            }
+            break;
+
+        case IMPL_GB_18030_TO_UNICODE_STATE_2:
+            if (nChar >= 0x81 && nChar <= 0xFE)
+            {
+                nCode = nCode * 126 + (nChar - 0x81);
+                eState = IMPL_GB_18030_TO_UNICODE_STATE_3;
+            }
+            else
+            {
+                bUndefined = false;
+                goto bad_input;
+            }
+            break;
+
+        case IMPL_GB_18030_TO_UNICODE_STATE_3:
+            if (nChar >= 0x30 && nChar <= 0x39)
+            {
+                nCode = nCode * 10 + (nChar - 0x30);
+
+                // 90 30 81 30 to E3 32 9A 35 maps to U+10000 to U+10FFFF:
+                if (nCode >= 189000 && nCode <= 1237575)
+                    if (pDestBufEnd - pDestBufPtr >= 2)
+                    {
+                        nCode -= 189000 - 0x10000;
+                        pDestBufPtr += rtl::splitSurrogates(nCode, pDestBufPtr);
+                        startOfCurrentChar = nConverted + 1;
+                    }
+                    else
+                        goto no_output;
+                else
+                {
+                    ImplGb180302000ToUnicodeRange const * pRange
+                        = pGb18030Ranges;
+                    sal_uInt32 nFirstNonRange = 0;
+                    for (;;)
+                    {
+                        if (pRange->m_nNonRangeDataIndex == -1)
+                            goto bad_input;
+                        else if (nCode < pRange->m_nFirstLinear)
+                        {
+                            if (pDestBufPtr != pDestBufEnd) {
+                                *pDestBufPtr++
+                                    = pGb18030Data[
+                                          pRange->m_nNonRangeDataIndex
+                                              + (nCode - nFirstNonRange)];
+                                startOfCurrentChar = nConverted + 1;
+                            } else
+                                goto no_output;
+                            break;
+                        }
+                        else if (nCode < pRange->m_nPastLinear)
+                        {
+                            if (pDestBufPtr != pDestBufEnd) {
+                                *pDestBufPtr++
+                                    = static_cast<sal_Unicode>(pRange->m_nFirstUnicode
+                                               + (nCode
+                                                      - pRange->
+                                                            m_nFirstLinear));
+                                startOfCurrentChar = nConverted + 1;
+                            } else
+                                goto no_output;
+                            break;
+                        }
+                        nFirstNonRange = (pRange++)->m_nPastLinear;
+                    }
+                }
+                eState = IMPL_GB_18030_TO_UNICODE_STATE_0;
+            }
+            else
+            {
+                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_GB_18030_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_GB_18030_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_GB_18030_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_GB_18030_TO_UNICODE_STATE_0;
+                break;
+
+            case sal::detail::textenc::BAD_INPUT_NO_OUTPUT:
+                nInfo |= RTL_TEXTTOUNICODE_INFO_DESTBUFFERTOOSMALL;
+                break;
+            }
+    }
+
+    if (pContext)
+    {
+        static_cast< ImplGb18030ToUnicodeContext * >(pContext)->m_eState = eState;
+        static_cast< ImplGb18030ToUnicodeContext * >(pContext)->m_nCode = nCode;
+    }
+    if (pInfo)
+        *pInfo = nInfo;
+    if (pSrcCvtBytes)
+        *pSrcCvtBytes = nConverted;
+
+    return pDestBufPtr - pDestBuf;
+}
+
+sal_Size ImplConvertUnicodeToGb18030(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_uInt32 const * pGb18030Data
+        = static_cast< ImplGb18030ConverterData const * >(pData)->
+              m_pUnicodeToGb18030Data;
+    ImplUnicodeToGb180302000Range const * pGb18030Ranges
+        = static_cast< ImplGb18030ConverterData const * >(pData)->
+              m_pUnicodeToGb18030Ranges;
+    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 if (nChar < 0x10000)
+        {
+            ImplUnicodeToGb180302000Range const * pRange = pGb18030Ranges;
+            sal_Unicode nFirstNonRange = 0x80;
+            for (;;)
+            {
+                if (nChar < pRange->m_nFirstUnicode)
+                {
+                    sal_uInt32 nCode
+                        = pGb18030Data[pRange->m_nNonRangeDataIndex
+                                           + (nChar - nFirstNonRange)];
+                    if (pDestBufEnd - pDestBufPtr
+                            >= (nCode <= 0xFFFF ? 2 : 4))
+                    {
+                        if (nCode > 0xFFFF)
+                        {
+                            *pDestBufPtr++ = static_cast< char >(nCode >> 24);
+                            *pDestBufPtr++ = static_cast< char >(nCode >> 16 & 0xFF);
+                        }
+                        *pDestBufPtr++ = static_cast< char >(nCode >> 8 & 0xFF);
+                        *pDestBufPtr++ = static_cast< char >(nCode & 0xFF);
+                    }
+                    else
+                        goto no_output;
+                    break;
+                }
+                if (nChar <= pRange->m_nLastUnicode)
+                {
+                    if (pDestBufEnd - pDestBufPtr >= 4)
+                    {
+                        sal_uInt32 nCode
+                            = pRange->m_nFirstLinear
+                                  + (nChar - pRange->m_nFirstUnicode);
+                        *pDestBufPtr++ = static_cast< char >(nCode / 12600 + 0x81);
+                        *pDestBufPtr++
+                            = static_cast< char >(nCode / 1260 % 10 + 0x30);
+                        *pDestBufPtr++ = static_cast< char >(nCode / 10 % 126 + 0x81);
+                        *pDestBufPtr++ = static_cast< char >(nCode % 10 + 0x30);
+                    }
+                    else
+                        goto no_output;
+                    break;
+                }
+                nFirstNonRange
+                    = static_cast<sal_Unicode>((pRange++)->m_nLastUnicode + 1);
+            }
+        }
+        else
+            if (pDestBufEnd - pDestBufPtr >= 4)
+            {
+                sal_uInt32 nCode = nChar - 0x10000;
+                *pDestBufPtr++ = static_cast< char >(nCode / 12600 + 0x90);
+                *pDestBufPtr++ = static_cast< char >(nCode / 1260 % 10 + 0x30);
+                *pDestBufPtr++ = static_cast< char >(nCode / 10 % 126 + 0x81);
+                *pDestBufPtr++ = static_cast< char >(nCode % 10 + 0x30);
+            }
+            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: */