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, 301 insertions, 0 deletions

diff --git a/include/oox/helper/helper.hxx b/include/oox/helper/helper.hxx
new file mode 100644
index 000000000..63718ca0e
--- /dev/null
+++ b/include/oox/helper/helper.hxx
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+/* -*- 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 .
+ */
+
+#ifndef INCLUDED_OOX_HELPER_HELPER_HXX
+#define INCLUDED_OOX_HELPER_HELPER_HXX
+
+#include <sal/config.h>
+
+#include <cstring>
+#include <limits>
+
+#include <o3tl/safeint.hxx>
+#include <osl/endian.h>
+#include <rtl/math.hxx>
+#include <sal/macros.h>
+#include <sal/types.h>
+#include <tools/color.hxx>
+
+namespace oox {
+
+// Helper macros ==============================================================
+
+namespace detail {
+
+//TODO: Temporary helper for STATIC_ARRAY_SELECT; ultimately, the latter should be replaced by a
+// proper function (template):
+template<typename T> constexpr std::make_unsigned_t<T> make_unsigned(T value) {
+    if constexpr (std::is_signed_v<T>) {
+        return o3tl::make_unsigned(value);
+    } else {
+        return value;
+    }
+}
+
+}
+
+/** Expands to the 'index'-th element of a STATIC data array, or to 'def', if
+    'index' is out of the array limits. */
+#define STATIC_ARRAY_SELECT( array, index, def ) \
+    ((detail::make_unsigned(index) < SAL_N_ELEMENTS(array)) ? ((array)[static_cast<size_t>(index)]) : (def))
+
+// Common constants ===========================================================
+
+const sal_uInt8 WINDOWS_CHARSET_ANSI        = 0;
+const sal_uInt8 WINDOWS_CHARSET_DEFAULT     = 1;
+const sal_uInt8 WINDOWS_CHARSET_SYMBOL      = 2;
+const sal_uInt8 WINDOWS_CHARSET_APPLE_ROMAN = 77;
+const sal_uInt8 WINDOWS_CHARSET_SHIFTJIS    = 128;
+const sal_uInt8 WINDOWS_CHARSET_HANGEUL     = 129;
+const sal_uInt8 WINDOWS_CHARSET_JOHAB       = 130;
+const sal_uInt8 WINDOWS_CHARSET_GB2312      = 134;
+const sal_uInt8 WINDOWS_CHARSET_BIG5        = 136;
+const sal_uInt8 WINDOWS_CHARSET_GREEK       = 161;
+const sal_uInt8 WINDOWS_CHARSET_TURKISH     = 162;
+const sal_uInt8 WINDOWS_CHARSET_VIETNAMESE  = 163;
+const sal_uInt8 WINDOWS_CHARSET_HEBREW      = 177;
+const sal_uInt8 WINDOWS_CHARSET_ARABIC      = 178;
+const sal_uInt8 WINDOWS_CHARSET_BALTIC      = 186;
+const sal_uInt8 WINDOWS_CHARSET_RUSSIAN     = 204;
+const sal_uInt8 WINDOWS_CHARSET_THAI        = 222;
+const sal_uInt8 WINDOWS_CHARSET_EASTERN     = 238;
+const sal_uInt8 WINDOWS_CHARSET_OEM         = 255;
+
+
+const ::Color API_RGB_TRANSPARENT         (ColorTransparency, 0xffffffff); ///< Transparent color for API calls.
+const sal_uInt32 UNSIGNED_RGB_TRANSPARENT = static_cast<sal_uInt32>(-1); ///< Transparent color for unsigned int32 places.
+const ::Color API_RGB_BLACK               (0x000000);  ///< Black color for API calls.
+const ::Color API_RGB_GRAY                (0x808080);  ///< Gray color for API calls.
+const ::Color API_RGB_WHITE               (0xFFFFFF);  ///< White color for API calls.
+
+const sal_Int16 API_LINE_SOLID              = 0;
+const sal_Int16 API_LINE_DOTTED             = 1;
+const sal_Int16 API_LINE_DASHED             = 2;
+const sal_Int16 API_FINE_LINE_DASHED        = 14;
+
+const sal_Int16 API_LINE_NONE               = 0;
+const sal_Int16 API_LINE_HAIR               = 2;
+const sal_Int16 API_LINE_THIN               = 35;
+const sal_Int16 API_LINE_MEDIUM             = 88;
+const sal_Int16 API_LINE_THICK              = 141;
+
+const sal_Int16 API_ESCAPE_NONE             = 0;        ///< No escapement.
+const sal_Int16 API_ESCAPE_SUPERSCRIPT      = 101;      ///< Superscript: raise characters automatically (magic value 101).
+const sal_Int16 API_ESCAPE_SUBSCRIPT        = -101;     ///< Subscript: lower characters automatically (magic value -101).
+
+const sal_Int8 API_ESCAPEHEIGHT_NONE        = 100;      ///< Relative character height if not escaped.
+const sal_Int8 API_ESCAPEHEIGHT_DEFAULT     = 58;       ///< Relative character height if escaped.
+
+
+// Limitate values ------------------------------------------------------------
+
+template< typename ReturnType, typename Type >
+inline ReturnType getLimitedValue( Type nValue, Type nMin, Type nMax )
+{
+    return static_cast< ReturnType >( ::std::clamp( nValue, nMin, nMax ) );
+}
+
+template< typename ReturnType, typename Type >
+inline ReturnType getIntervalValue( Type nValue, Type nBegin, Type nEnd )
+{
+    static_assert(::std::numeric_limits< Type >::is_integer, "is integer");
+    Type nInterval = nEnd - nBegin;
+    Type nCount = (nValue < nBegin) ? -((nBegin - nValue - 1) / nInterval + 1) : ((nValue - nBegin) / nInterval);
+    return static_cast< ReturnType >( nValue - nCount * nInterval );
+}
+
+template< typename ReturnType >
+inline ReturnType getDoubleIntervalValue( double fValue, double fBegin, double fEnd )
+{
+    double fInterval = fEnd - fBegin;
+    double fCount = (fValue < fBegin) ? -(::rtl::math::approxFloor( (fBegin - fValue - 1.0) / fInterval ) + 1.0) : ::rtl::math::approxFloor( (fValue - fBegin) / fInterval );
+    return static_cast< ReturnType >( fValue - fCount * fInterval );
+}
+
+// Read from bitfields --------------------------------------------------------
+
+/** Returns true, if at least one of the bits set in nMask is set in nBitField. */
+template< typename Type >
+inline bool getFlag( Type nBitField, Type nMask )
+{
+    return (nBitField & nMask) != 0;
+}
+
+/** Returns nSet, if at least one bit of nMask is set in nBitField, otherwise nUnset. */
+template< typename ReturnType, typename Type >
+inline ReturnType getFlagValue( Type nBitField, Type nMask, ReturnType nSet, ReturnType nUnset )
+{
+    return getFlag( nBitField, nMask ) ? nSet : nUnset;
+}
+
+/** Extracts a value from a bit field.
+
+    Returns the data fragment from nBitField, that starts at bit nStartBit
+    (0-based, bit 0 is rightmost) with the width of nBitCount. The returned
+    value will be right-aligned (normalized).
+    For instance: extractValue<T>(0x4321,8,4) returns 3 (value in bits 8-11).
+ */
+template< typename ReturnType, typename Type >
+inline ReturnType extractValue( Type nBitField, sal_uInt8 nStartBit, sal_uInt8 nBitCount )
+{
+    sal_uInt64 nMask = 1; nMask <<= nBitCount; --nMask;
+    return static_cast< ReturnType >( nMask & (nBitField >> nStartBit) );
+}
+
+// Write to bitfields ---------------------------------------------------------
+
+/** Sets or clears (according to bSet) all set bits of nMask in ornBitField. */
+template< typename Type >
+inline void setFlag( Type& ornBitField, Type nMask, bool bSet = true )
+{
+    if( bSet ) ornBitField |= nMask; else ornBitField &= ~nMask;
+}
+
+
+/** Optional value, similar to ::std::optional<>, with convenience accessors.
+ */
+template< typename Type >
+class OptValue
+{
+public:
+                 OptValue() : maValue(), mbHasValue( false ) {}
+    explicit     OptValue( const Type& rValue ) : maValue( rValue ), mbHasValue( true ) {}
+    explicit     OptValue( bool bHasValue, const Type& rValue ) : maValue( rValue ), mbHasValue( bHasValue ) {}
+
+    bool         has() const { return mbHasValue; }
+    bool         operator!() const { return !mbHasValue; }
+    bool         differsFrom( const Type& rValue ) const { return mbHasValue && (maValue != rValue); }
+
+    const Type&  get() const { return maValue; }
+    const Type&  get( const Type& rDefValue ) const { return mbHasValue ? maValue : rDefValue; }
+
+    void         set( const Type& rValue ) { maValue = rValue; mbHasValue = true; }
+    Type&        use() { mbHasValue = true; return maValue; }
+
+    OptValue&    operator=( const Type& rValue ) { set( rValue ); return *this; }
+    bool         operator==( const OptValue& rValue ) const {
+                             return ( ( !mbHasValue && rValue.mbHasValue == false ) ||
+                                 ( mbHasValue == rValue.mbHasValue && maValue == rValue.maValue ) );
+                 }
+    void         assignIfUsed( const OptValue& rValue ) { if( rValue.mbHasValue ) set( rValue.maValue ); }
+
+private:
+    Type                maValue;
+    bool                mbHasValue;
+};
+
+
+/** Provides platform independent functions to convert from or to little-endian
+    byte order, e.g. for reading data from or writing data to memory or a
+    binary stream.
+
+    On big-endian platforms, the byte order in the passed values is swapped,
+    this can be used for converting big-endian to and from little-endian data.
+
+    On little-endian platforms, the conversion functions are implemented empty,
+    thus compilers should completely optimize away the function call.
+ */
+class ByteOrderConverter
+{
+public:
+#ifdef OSL_BIGENDIAN
+    static void  convertLittleEndian( sal_Int8& ) {}     // present for usage in templates
+    static void  convertLittleEndian( sal_uInt8& ) {}    // present for usage in templates
+    static void  convertLittleEndian( char16_t& rnValue )   { swap2( reinterpret_cast< sal_uInt8* >( &rnValue ) ); }
+    static void  convertLittleEndian( sal_Int16& rnValue )  { swap2( reinterpret_cast< sal_uInt8* >( &rnValue ) ); }
+    static void  convertLittleEndian( sal_uInt16& rnValue ) { swap2( reinterpret_cast< sal_uInt8* >( &rnValue ) ); }
+    static void  convertLittleEndian( sal_Int32& rnValue )  { swap4( reinterpret_cast< sal_uInt8* >( &rnValue ) ); }
+    static void  convertLittleEndian( sal_uInt32& rnValue ) { swap4( reinterpret_cast< sal_uInt8* >( &rnValue ) ); }
+    static void  convertLittleEndian( sal_Int64& rnValue )  { swap8( reinterpret_cast< sal_uInt8* >( &rnValue ) ); }
+    static void  convertLittleEndian( sal_uInt64& rnValue ) { swap8( reinterpret_cast< sal_uInt8* >( &rnValue ) ); }
+    static void  convertLittleEndian( float& rfValue )      { swap4( reinterpret_cast< sal_uInt8* >( &rfValue ) ); }
+    static void  convertLittleEndian( double& rfValue )     { swap8( reinterpret_cast< sal_uInt8* >( &rfValue ) ); }
+
+    template< typename Type >
+    inline static void  convertLittleEndianArray( Type* pnArray, size_t nElemCount );
+
+    static void  convertLittleEndianArray( sal_Int8*, size_t ) {}
+    static void  convertLittleEndianArray( sal_uInt8*, size_t ) {}
+
+#else
+    template< typename Type >
+    static void  convertLittleEndian( Type& ) {}
+
+    template< typename Type >
+    static void  convertLittleEndianArray( Type*, size_t ) {}
+
+#endif
+
+    /** Writes a value to memory, while converting it to little-endian.
+        @param pDstBuffer  The memory buffer to write the value to.
+        @param nValue  The value to be written to memory in little-endian.
+     */
+    template< typename Type >
+    inline static void  writeLittleEndian( void* pDstBuffer, Type nValue );
+
+#ifdef OSL_BIGENDIAN
+private:
+    inline static void  swap2( sal_uInt8* pnData );
+    inline static void  swap4( sal_uInt8* pnData );
+    inline static void  swap8( sal_uInt8* pnData );
+#endif
+};
+
+
+template< typename Type >
+inline void ByteOrderConverter::writeLittleEndian( void* pDstBuffer, Type nValue )
+{
+    convertLittleEndian( nValue );
+    memcpy( pDstBuffer, &nValue, sizeof( Type ) );
+}
+
+#ifdef OSL_BIGENDIAN
+template< typename Type >
+inline void ByteOrderConverter::convertLittleEndianArray( Type* pnArray, size_t nElemCount )
+{
+    for( Type* pnArrayEnd = pnArray + nElemCount; pnArray != pnArrayEnd; ++pnArray )
+        convertLittleEndian( *pnArray );
+}
+
+inline void ByteOrderConverter::swap2( sal_uInt8* pnData )
+{
+    ::std::swap( pnData[ 0 ], pnData[ 1 ] );
+}
+
+inline void ByteOrderConverter::swap4( sal_uInt8* pnData )
+{
+    ::std::swap( pnData[ 0 ], pnData[ 3 ] );
+    ::std::swap( pnData[ 1 ], pnData[ 2 ] );
+}
+
+inline void ByteOrderConverter::swap8( sal_uInt8* pnData )
+{
+    ::std::swap( pnData[ 0 ], pnData[ 7 ] );
+    ::std::swap( pnData[ 1 ], pnData[ 6 ] );
+    ::std::swap( pnData[ 2 ], pnData[ 5 ] );
+    ::std::swap( pnData[ 3 ], pnData[ 4 ] );
+}
+#endif
+
+
+} // namespace oox
+
+#endif
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */