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, 210 insertions, 0 deletions

diff --git a/sal/textenc/convertsinglebytetobmpunicode.cxx b/sal/textenc/convertsinglebytetobmpunicode.cxx
new file mode 100644
index 000000000..b948ba0fb
--- /dev/null
+++ b/sal/textenc/convertsinglebytetobmpunicode.cxx
@@ -0,0 +1,210 @@
+/* -*- 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 <cstddef>
+
+#include <rtl/character.hxx>
+#include <rtl/textcvt.h>
+#include <sal/types.h>
+
+#include "context.hxx"
+#include "converter.hxx"
+#include "convertsinglebytetobmpunicode.hxx"
+#include "unichars.hxx"
+
+sal_Size rtl_textenc_convertSingleByteToBmpUnicode(
+    void const * data, SAL_UNUSED_PARAMETER void *, char const * srcBuf,
+    sal_Size srcBytes, sal_Unicode * destBuf, sal_Size destChars,
+    sal_uInt32 flags, sal_uInt32 * info, sal_Size * srcCvtBytes)
+{
+    sal_Unicode const * map = static_cast<
+        rtl::textenc::BmpUnicodeToSingleByteConverterData const * >(
+            data)->byteToUnicode;
+    sal_uInt32 infoFlags = 0;
+    sal_Size converted = 0;
+    sal_Unicode * destBufPtr = destBuf;
+    sal_Unicode * destBufEnd = destBuf + destChars;
+    for (; converted < srcBytes; ++converted) {
+        char b = *srcBuf++;
+        sal_Unicode c = map[static_cast< sal_uInt8 >(b)];
+        if (c == 0xFFFF) {
+            goto bad_input;
+        }
+        if (destBufEnd - destBufPtr < 1) {
+            goto no_output;
+        }
+        *destBufPtr++ = c;
+        continue;
+    bad_input:
+        switch (sal::detail::textenc::handleBadInputTextToUnicodeConversion(
+                    true/*undefined*/, false, b, flags, &destBufPtr, destBufEnd,
+                    &infoFlags))
+        {
+        case sal::detail::textenc::BAD_INPUT_STOP:
+            if ((flags & RTL_TEXTTOUNICODE_FLAGS_FLUSH) == 0) {
+                ++converted;
+            }
+            break;
+
+        case sal::detail::textenc::BAD_INPUT_CONTINUE:
+            continue;
+
+        case sal::detail::textenc::BAD_INPUT_NO_OUTPUT:
+            goto no_output;
+        }
+        break;
+    no_output:
+        --srcBuf;
+        infoFlags |= RTL_TEXTTOUNICODE_INFO_DESTBUFFERTOOSMALL;
+        break;
+    }
+    if (info != nullptr) {
+        *info = infoFlags;
+    }
+    if (srcCvtBytes != nullptr) {
+        *srcCvtBytes = converted;
+    }
+    return destBufPtr - destBuf;
+}
+
+sal_Size rtl_textenc_convertBmpUnicodeToSingleByte(
+    void const * data, void * context,
+    sal_Unicode const * srcBuf, sal_Size srcChars, char * destBuf,
+    sal_Size destBytes, sal_uInt32 flags, sal_uInt32 * info,
+    sal_Size * srcCvtChars)
+{
+    std::size_t entries = static_cast<
+        rtl::textenc::BmpUnicodeToSingleByteConverterData const * >(
+            data)->unicodeToByteEntries;
+    rtl::textenc::BmpUnicodeToSingleByteRange const * ranges = static_cast<
+        rtl::textenc::BmpUnicodeToSingleByteConverterData const * >(
+            data)->unicodeToByte;
+    sal_Unicode highSurrogate = 0;
+    sal_uInt32 infoFlags = 0;
+    sal_Size converted = 0;
+    char * destBufPtr = destBuf;
+    char * destBufEnd = destBuf + destBytes;
+    if (context != nullptr) {
+        highSurrogate = static_cast< ImplUnicodeToTextContext * >(context)->
+            m_nHighSurrogate;
+    }
+    for (; converted < srcChars; ++converted) {
+        bool undefined = true;
+        sal_uInt32 c = *srcBuf++;
+        if (highSurrogate == 0) {
+            if (ImplIsHighSurrogate(c)) {
+                highSurrogate = static_cast< sal_Unicode >(c);
+                continue;
+            }
+            else if (ImplIsLowSurrogate(c))
+            {
+                undefined = false;
+                goto bad_input;
+            }
+        } else if (ImplIsLowSurrogate(c)) {
+            c = ImplCombineSurrogates(highSurrogate, c);
+        } else {
+            undefined = false;
+            goto bad_input;
+        }
+        assert(rtl::isUnicodeScalarValue(c));
+        // Linearly searching through the ranges if probably fastest, assuming
+        // that most converted characters belong to the ASCII subset:
+        for (std::size_t i = 0; i < entries; ++i) {
+            if (c < ranges[i].unicode) {
+                break;
+            }
+            if (c <= sal::static_int_cast< sal_uInt32 >(
+                           ranges[i].unicode + ranges[i].range))
+            {
+                if (destBufEnd - destBufPtr < 1) {
+                    goto no_output;
+                }
+                *destBufPtr++ = static_cast< char >(
+                    ranges[i].byte + (c - ranges[i].unicode));
+                goto done;
+            }
+        }
+        goto bad_input;
+    done:
+        highSurrogate = 0;
+        continue;
+    bad_input:
+        switch (sal::detail::textenc::handleBadInputUnicodeToTextConversion(
+                    undefined, c, flags, &destBufPtr, destBufEnd, &infoFlags, nullptr,
+                    0, nullptr))
+        {
+        case sal::detail::textenc::BAD_INPUT_STOP:
+            highSurrogate = 0;
+            break;
+
+        case sal::detail::textenc::BAD_INPUT_CONTINUE:
+            highSurrogate = 0;
+            continue;
+
+        case sal::detail::textenc::BAD_INPUT_NO_OUTPUT:
+            goto no_output;
+        }
+        break;
+    no_output:
+        --srcBuf;
+        infoFlags |= RTL_UNICODETOTEXT_INFO_DESTBUFFERTOSMALL;
+        break;
+    }
+    if (highSurrogate != 0
+        && ((infoFlags
+             & (RTL_UNICODETOTEXT_INFO_ERROR
+                | RTL_UNICODETOTEXT_INFO_DESTBUFFERTOSMALL))
+            == 0))
+    {
+        if ((flags & RTL_UNICODETOTEXT_FLAGS_FLUSH) != 0) {
+            infoFlags |= RTL_UNICODETOTEXT_INFO_SRCBUFFERTOSMALL;
+        } else {
+            switch (sal::detail::textenc::handleBadInputUnicodeToTextConversion(
+                        false, 0, flags, &destBufPtr, destBufEnd, &infoFlags, nullptr,
+                        0, nullptr))
+            {
+            case sal::detail::textenc::BAD_INPUT_STOP:
+            case sal::detail::textenc::BAD_INPUT_CONTINUE:
+                highSurrogate = 0;
+                break;
+
+            case sal::detail::textenc::BAD_INPUT_NO_OUTPUT:
+                infoFlags |= RTL_UNICODETOTEXT_INFO_DESTBUFFERTOSMALL;
+                break;
+            }
+        }
+    }
+    if (context != nullptr) {
+        static_cast< ImplUnicodeToTextContext * >(context)->m_nHighSurrogate
+            = highSurrogate;
+    }
+    if (info != nullptr) {
+        *info = infoFlags;
+    }
+    if (srcCvtChars != nullptr) {
+        *srcCvtChars = converted;
+    }
+    return destBufPtr - destBuf;
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */