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, 251 insertions, 0 deletions

diff --git a/include/oox/ole/axbinaryreader.hxx b/include/oox/ole/axbinaryreader.hxx
new file mode 100644
index 000000000..eb185f235
--- /dev/null
+++ b/include/oox/ole/axbinaryreader.hxx
@@ -0,0 +1,251 @@
+/* -*- 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_OLE_AXBINARYREADER_HXX
+#define INCLUDED_OOX_OLE_AXBINARYREADER_HXX
+
+#include <cstddef>
+#include <utility>
+#include <vector>
+
+#include <oox/helper/binaryinputstream.hxx>
+#include <oox/helper/binarystreambase.hxx>
+#include <oox/helper/refvector.hxx>
+#include <rtl/ustring.hxx>
+#include <sal/types.h>
+
+namespace oox::ole { struct AxFontData; }
+
+namespace oox::ole {
+
+
+/** A wrapper for a binary input stream that supports aligned read operations.
+
+    The implementation does not support seeking back the wrapped stream. All
+    seeking operations (tell, seekTo, align) are performed relative to the
+    position of the wrapped stream at construction time of this wrapper. It is
+    possible to construct this wrapper with an unseekable input stream without
+    losing any functionality.
+ */
+class AxAlignedInputStream final : public BinaryInputStream
+{
+public:
+    explicit            AxAlignedInputStream( BinaryInputStream& rInStrm );
+
+    /** Returns the size of the data this stream represents, if the wrapped
+        stream supports the size() operation. */
+    virtual sal_Int64   size() const override;
+    /** Return the current relative stream position (relative to position of
+        the wrapped stream at construction time). */
+    virtual sal_Int64   tell() const override;
+    /** Seeks the stream to the passed relative position, if it is behind the
+        current position. */
+    virtual void        seek( sal_Int64 nPos ) override;
+    /** Closes the input stream but not the wrapped stream. */
+    virtual void        close() override;
+
+    /** Reads nBytes bytes to the passed sequence.
+        @return  Number of bytes really read. */
+    virtual sal_Int32   readData( StreamDataSequence& orData, sal_Int32 nBytes, size_t nAtomSize = 1 ) override;
+    /** Reads nBytes bytes to the (existing) buffer opMem.
+        @return  Number of bytes really read. */
+    virtual sal_Int32   readMemory( void* opMem, sal_Int32 nBytes, size_t nAtomSize = 1 ) override;
+    /** Seeks the stream forward by the passed number of bytes. */
+    virtual void        skip( sal_Int32 nBytes, size_t nAtomSize = 1 ) override;
+
+    /** Aligns the stream to a multiple of the passed size (relative to the
+        position of the wrapped stream at construction time). */
+    void                align( size_t nSize );
+
+    /** Aligns the stream according to the passed type and reads a value. */
+    template< typename Type >
+    [[nodiscard]]
+    Type                readAligned() { align( sizeof( Type ) ); return readValue< Type >(); }
+    /** Aligns the stream according to the passed type and skips the size of the type. */
+    template< typename Type >
+    void                skipAligned() { align( sizeof( Type ) ); skip( sizeof( Type ) ); }
+
+private:
+    BinaryInputStream*  mpInStrm;           ///< The wrapped input stream.
+    sal_Int64           mnStrmPos;          ///< Tracks relative position in the stream.
+    sal_Int64           mnStrmSize;         ///< Size of the wrapped stream data.
+};
+
+
+/** A pair of integer values as a property. */
+typedef ::std::pair< sal_Int32, sal_Int32 > AxPairData;
+
+/** An array of string values as a property. */
+typedef ::std::vector< OUString > AxArrayString;
+
+
+/** Import helper to read simple and complex ActiveX form control properties
+    from a binary input stream. */
+class AxBinaryPropertyReader
+{
+public:
+    explicit            AxBinaryPropertyReader( BinaryInputStream& rInStrm, bool b64BitPropFlags = false );
+
+    /** Reads the next integer property value from the stream, if the
+        respective flag in the property mask is set. */
+    template< typename StreamType, typename DataType >
+    void                readIntProperty( DataType& ornValue )
+                            { if( startNextProperty() ) ornValue = maInStrm.readAligned< StreamType >(); }
+    /** Reads the next boolean property value from the stream, if the
+        respective flag in the property mask is set. */
+    void                readBoolProperty( bool& orbValue, bool bReverse = false );
+    /** Reads the next pair property from the stream, if the respective flag in
+        the property mask is set. */
+    void                readPairProperty( AxPairData& orPairData );
+    /** Reads the next string property from the stream, if the respective flag
+        in the property mask is set. */
+    void                readStringProperty( OUString& orValue );
+    /** Reads ArrayString, an array of fmString ( compressed or uncompressed )
+        is read from the stream and inserted into rStrings */
+    void                readArrayStringProperty( std::vector< OUString >& rStrings );
+    /** Reads the next GUID property from the stream, if the respective flag
+        in the property mask is set. The GUID will be enclosed in braces. */
+    void                readGuidProperty( OUString& orGuid );
+    /** Reads the next font property from the stream, if the respective flag in
+        the property mask is set. */
+    void                readFontProperty( AxFontData& orFontData );
+    /** Reads the next picture property from the stream, if the respective flag
+        in the property mask is set. */
+    void                readPictureProperty( StreamDataSequence& orPicData );
+
+    /** Skips the next integer property value in the stream, if the respective
+        flag in the property mask is set. */
+    template< typename StreamType >
+    void                skipIntProperty() { if( startNextProperty() ) maInStrm.skipAligned< StreamType >(); }
+    /** Skips the next boolean property value in the stream, if the respective
+        flag in the property mask is set. */
+    void                skipBoolProperty() { (void)startNextProperty(); }
+    /** Skips the next string property in the stream, if the respective flag in
+        the property mask is set. */
+    void                skipStringProperty() { readStringProperty( maDummyString ); }
+    /** Skips the next ArrayString property in the stream, if the respective flag in
+        the property mask is set. */
+    void                skipArrayStringProperty() { readArrayStringProperty( maDummyArrayString ); }
+    /** Skips the next GUID property in the stream, if the respective flag in
+        the property mask is set. */
+    void                skipGuidProperty() { readGuidProperty( maDummyString ); }
+    /** Skips the next picture property in the stream, if the respective flag
+        in the property mask is set. */
+    void                skipPictureProperty() { readPictureProperty( maDummyPicData ); }
+    /** Has to be called for undefined properties. If the respective flag in
+        the mask is set, the property import cannot be finished successfully. */
+    void                skipUndefinedProperty() { ensureValid( !startNextProperty() ); }
+
+    /** Final processing, reads contents of all complex properties. */
+    bool                finalizeImport();
+
+private:
+    bool                ensureValid( bool bCondition = true );
+    bool                startNextProperty();
+
+private:
+    /** Base class for complex properties such as string, point, size, GUID, picture. */
+    struct ComplexProperty
+    {
+        virtual             ~ComplexProperty();
+        virtual bool        readProperty( AxAlignedInputStream& rInStrm ) = 0;
+    };
+
+    /** Complex property for a 32-bit value pair, e.g. point or size. */
+    struct PairProperty final : public ComplexProperty
+    {
+        AxPairData&         mrPairData;
+
+        explicit            PairProperty( AxPairData& rPairData ) :
+                                mrPairData( rPairData ) {}
+        virtual bool        readProperty( AxAlignedInputStream& rInStrm ) override;
+    };
+
+    /** Complex property for a string value. */
+    struct StringProperty final : public ComplexProperty
+    {
+        OUString&    mrValue;
+        sal_uInt32          mnSize;
+
+        explicit            StringProperty( OUString& rValue, sal_uInt32 nSize ) :
+                                mrValue( rValue ), mnSize( nSize ) {}
+        virtual bool        readProperty( AxAlignedInputStream& rInStrm ) override;
+    };
+
+    /** Complex property for an array of strings. */
+    struct ArrayStringProperty final : public ComplexProperty
+    {
+        AxArrayString&      mrArray;
+        sal_uInt32          mnSize;
+        explicit            ArrayStringProperty( AxArrayString& rArray, sal_uInt32 nSize ) :
+                                mrArray( rArray ), mnSize( nSize ) {}
+        virtual bool        readProperty( AxAlignedInputStream& rInStrm ) override;
+    };
+
+    /** Complex property for a GUID value. */
+    struct GuidProperty final : public ComplexProperty
+    {
+        OUString&    mrGuid;
+
+        explicit            GuidProperty( OUString& rGuid ) :
+                                mrGuid( rGuid ) {}
+        virtual bool        readProperty( AxAlignedInputStream& rInStrm ) override;
+    };
+
+    /** Stream property for a font structure. */
+    struct FontProperty final : public ComplexProperty
+    {
+        AxFontData&         mrFontData;
+
+        explicit            FontProperty( AxFontData& rFontData ) :
+                                mrFontData( rFontData ) {}
+        virtual bool        readProperty( AxAlignedInputStream& rInStrm ) override;
+    };
+
+    /** Stream property for a picture or mouse icon. */
+    struct PictureProperty final : public ComplexProperty
+    {
+        StreamDataSequence& mrPicData;
+
+        explicit            PictureProperty( StreamDataSequence& rPicData ) :
+                                mrPicData( rPicData ) {}
+        virtual bool        readProperty( AxAlignedInputStream& rInStrm ) override;
+    };
+
+    typedef RefVector< ComplexProperty > ComplexPropVector;
+
+private:
+    AxAlignedInputStream maInStrm;          ///< The input stream to read from.
+    ComplexPropVector   maLargeProps;       ///< Stores info for all used large properties.
+    ComplexPropVector   maStreamProps;      ///< Stores info for all used stream data properties.
+    StreamDataSequence  maDummyPicData;     ///< Dummy picture for unsupported properties.
+    OUString            maDummyString;      ///< Dummy string for unsupported properties.
+    AxArrayString       maDummyArrayString; ///< Dummy strings for unsupported ArrayString properties.
+    sal_Int64           mnPropFlags;        ///< Flags specifying existing properties.
+    sal_Int64           mnNextProp;         ///< Next property to read.
+    sal_Int64           mnPropsEnd;         ///< End position of simple/large properties.
+    bool                mbValid;            ///< True = stream still valid.
+};
+
+
+} // namespace oox::ole
+
+#endif
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */