Adding upstream version 4:24.2.0.upstream/4%24.2.0

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

1 files changed, 191 insertions, 0 deletions

diff --git a/svtools/source/svrtf/rtfout.cxx b/svtools/source/svrtf/rtfout.cxx
new file mode 100644
index 0000000000..843256dc2d
--- /dev/null
+++ b/svtools/source/svrtf/rtfout.cxx
@@ -0,0 +1,191 @@
+/* -*- 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 <tools/debug.hxx>
+#include <tools/stream.hxx>
+#include <tools/solar.h>
+#include <rtl/string.hxx>
+#include <svtools/rtfkeywd.hxx>
+#include <svtools/rtfout.hxx>
+
+namespace {
+
+SvStream& Out_Hex( SvStream& rStream, sal_uLong nHex, sal_uInt8 nLen )
+{
+    char aNToABuf[] = "0000000000000000";
+
+    DBG_ASSERT( nLen < sizeof(aNToABuf), "too many places" );
+    if( nLen >= sizeof(aNToABuf) )
+        nLen = (sizeof(aNToABuf)-1);
+
+    // set pointer to end of buffer
+    char* pStr = aNToABuf + (sizeof(aNToABuf)-1);
+    for( sal_uInt8 n = 0; n < nLen; ++n )
+    {
+        *(--pStr) = static_cast<char>(nHex & 0xf ) + 48;
+        if( *pStr > '9' )
+            *pStr += 39;
+        nHex >>= 4;
+    }
+    return rStream.WriteOString( pStr );
+}
+
+// Ideally, this function should work on (sal_uInt32) Unicode scalar values
+// instead of (sal_Unicode) UTF-16 code units.  However, at least "Rich Text
+// Format (RTF) Specification Version 1.9.1" available at
+// <https://www.microsoft.com/en-us/download/details.aspx?id=10725> does not
+// look like it allows non-BMP Unicode characters >= 0x10000 in the \uN notation
+// (it only talks about "Unicode character", but then explains how values of N
+// greater than 32767 will be expressed as negative signed 16-bit numbers, so
+// that smells like \uN is limited to BMP).
+// However the "Mathematics" section has an example that shows the code point
+// U+1D44E being encoded as UTF-16 surrogate pair "\u-10187?\u-9138?", so
+// sal_Unicode actually works fine here.
+SvStream& Out_Char(SvStream& rStream, sal_Unicode c,
+    int *pUCMode, rtl_TextEncoding eDestEnc)
+{
+    const char* pStr = nullptr;
+    switch (c)
+    {
+    case 0x1:
+    case 0x2:
+        // this are control character of our textattributes and will never be
+        // written
+        break;
+    case 0xA0:
+        rStream.WriteOString( "\\~" );
+        break;
+    case 0xAD:
+        rStream.WriteOString( "\\-" );
+        break;
+    case 0x2011:
+        rStream.WriteOString( "\\_" );
+        break;
+    case '\n':
+        pStr = OOO_STRING_SVTOOLS_RTF_LINE;
+        break;
+    case '\t':
+        pStr = OOO_STRING_SVTOOLS_RTF_TAB;
+        break;
+    default:
+        switch(c)
+        {
+            case 149:
+                pStr = OOO_STRING_SVTOOLS_RTF_BULLET;
+                break;
+            case 150:
+                pStr = OOO_STRING_SVTOOLS_RTF_ENDASH;
+                break;
+            case 151:
+                pStr = OOO_STRING_SVTOOLS_RTF_EMDASH;
+                break;
+            case 145:
+                pStr = OOO_STRING_SVTOOLS_RTF_LQUOTE;
+                break;
+            case 146:
+                pStr = OOO_STRING_SVTOOLS_RTF_RQUOTE;
+                break;
+            case 147:
+                pStr = OOO_STRING_SVTOOLS_RTF_LDBLQUOTE;
+                break;
+            case 148:
+                pStr = OOO_STRING_SVTOOLS_RTF_RDBLQUOTE;
+                break;
+        }
+
+        if (pStr)
+            break;
+
+        switch (c)
+        {
+            case '\\':
+            case '}':
+            case '{':
+                rStream.WriteChar( '\\' ).WriteChar( char(c) );
+                break;
+            default:
+                if (c >= ' ' && c <= '~')
+                    rStream.WriteChar( char(c) );
+                else
+                {
+                    //If we can't convert to the dest encoding, or if
+                    //it's an uncommon multibyte sequence which most
+                    //readers won't be able to handle correctly, then
+                    //export as unicode
+                    OUString sBuf(&c, 1);
+                    OString sConverted;
+                    sal_uInt32 const nFlags =
+                        RTL_UNICODETOTEXT_FLAGS_UNDEFINED_ERROR |
+                        RTL_UNICODETOTEXT_FLAGS_INVALID_ERROR;
+                    bool bWriteAsUnicode = !(sBuf.convertToString(&sConverted,
+                                         eDestEnc, nFlags))
+                                            || (RTL_TEXTENCODING_UTF8==eDestEnc); // #i43933# do not export UTF-8 chars in RTF;
+                    if (bWriteAsUnicode)
+                    {
+                        (void)sBuf.convertToString(&sConverted,
+                            eDestEnc, OUSTRING_TO_OSTRING_CVTFLAGS);
+                    }
+                    const sal_Int32 nLen = sConverted.getLength();
+
+                    if (bWriteAsUnicode && pUCMode)
+                    {
+                        // then write as unicode - character
+                        if (*pUCMode != nLen)
+                        {
+                            // #i47831# add an additional whitespace, so that
+                            // "document whitespaces" are not ignored.;
+                            rStream.WriteOString( "\\uc" )
+                               .WriteNumberAsString( nLen ).WriteOString( " " );
+                            *pUCMode = nLen;
+                        }
+                        rStream.WriteOString( "\\u" )
+                           .WriteNumberAsString(c);
+                    }
+
+                    for (sal_Int32 nI = 0; nI < nLen; ++nI)
+                    {
+                        rStream.WriteOString( "\\'" );
+                        Out_Hex(rStream, sConverted[nI], 2);
+                    }
+                }
+                break;
+        }
+        break;
+    }
+
+    if (pStr)
+        rStream.WriteOString( pStr ).WriteChar( ' ' );
+
+    return rStream;
+}
+
+}
+
+SvStream& RTFOutFuncs::Out_String( SvStream& rStream, std::u16string_view rStr,
+    rtl_TextEncoding eDestEnc)
+{
+    int nUCMode = 1;
+    for (size_t n = 0; n < rStr.size(); ++n)
+        Out_Char(rStream, rStr[n], &nUCMode, eDestEnc);
+    if (nUCMode != 1)
+      rStream.WriteOString( "\\uc1" ).WriteOString( " " ); // #i47831# add an additional whitespace, so that "document whitespaces" are not ignored.;
+    return rStream;
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */