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, 385 insertions, 0 deletions

diff --git a/include/oox/helper/binaryinputstream.hxx b/include/oox/helper/binaryinputstream.hxx
new file mode 100644
index 000000000..e27b2def9
--- /dev/null
+++ b/include/oox/helper/binaryinputstream.hxx
@@ -0,0 +1,385 @@
+/* -*- 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_BINARYINPUTSTREAM_HXX
+#define INCLUDED_OOX_HELPER_BINARYINPUTSTREAM_HXX
+
+#include <cstddef>
+#include <memory>
+#include <vector>
+
+#include <com/sun/star/uno/Reference.hxx>
+#include <oox/dllapi.h>
+#include <oox/helper/binarystreambase.hxx>
+#include <oox/helper/helper.hxx>
+#include <rtl/string.hxx>
+#include <rtl/textenc.h>
+#include <rtl/ustring.hxx>
+#include <sal/types.h>
+
+namespace com::sun::star {
+    namespace io { class XInputStream; }
+}
+
+namespace oox {
+
+class BinaryOutputStream;
+
+
+/** Interface for binary input stream classes.
+
+    The binary data in the stream is assumed to be in little-endian format.
+ */
+class OOX_DLLPUBLIC BinaryInputStream : public virtual BinaryStreamBase
+{
+public:
+    /** Derived classes implement reading nBytes bytes to the passed sequence.
+        The sequence will be reallocated internally.
+
+        @param nAtomSize
+            The size of the elements in the memory block, if available. Derived
+            classes may be interested in this information.
+
+        @return
+            Number of bytes really read.
+     */
+    virtual sal_Int32   readData( StreamDataSequence& orData, sal_Int32 nBytes, size_t nAtomSize = 1 ) = 0;
+
+    /** Derived classes implement reading nBytes bytes to the (preallocated!)
+        memory buffer opMem.
+
+        @param nAtomSize
+            The size of the elements in the memory block, if available. Derived
+            classes may be interested in this information.
+
+        @return
+            Number of bytes really read.
+     */
+    virtual sal_Int32   readMemory( void* opMem, sal_Int32 nBytes, size_t nAtomSize = 1 ) = 0;
+
+    /** Derived classes implement seeking the stream forward by the passed
+        number of bytes. This should work for non-seekable streams too.
+
+        @param nAtomSize
+            The size of the elements in the memory block, if available. Derived
+            classes may be interested in this information.
+     */
+    virtual void        skip( sal_Int32 nBytes, size_t nAtomSize = 1 ) = 0;
+
+    /** Reads a value from the stream and converts it to platform byte order.
+        All data types supported by the ByteOrderConverter class can be used.
+     */
+    template< typename Type >
+    [[nodiscard]]
+    Type                 readValue();
+
+    [[nodiscard]]
+    sal_Int8             readInt8()   { return readValue<sal_Int8>(); }
+    [[nodiscard]]
+    sal_uInt8            readuInt8()  { return readValue<sal_uInt8>(); }
+    [[nodiscard]]
+    sal_Int16            readInt16()  { return readValue<sal_Int16>(); }
+    [[nodiscard]]
+    sal_uInt16           readuInt16() { return readValue<sal_uInt16>(); }
+    [[nodiscard]]
+    sal_Int32            readInt32()  { return readValue<sal_Int32>(); }
+    [[nodiscard]]
+    sal_uInt32           readuInt32() { return readValue<sal_uInt32>(); }
+    [[nodiscard]]
+    sal_Int64            readInt64()  { return readValue<sal_Int64>(); }
+    [[nodiscard]]
+    float                readFloat()  { return readValue<float>(); }
+    [[nodiscard]]
+    double               readDouble() { return readValue<double>(); }
+    [[nodiscard]]
+    unsigned char        readuChar()  { return readValue<unsigned char>(); }
+
+    /** Reads a (preallocated!) C array of values from the stream.
+
+        Converts all values in the array to platform byte order. All data types
+        supported by the ByteOrderConverter class can be used.
+
+        @param nElemCount
+            Number of array elements to read (NOT byte count).
+
+        @return
+            Number of array elements really read (NOT byte count).
+     */
+    template< typename Type >
+    sal_Int32           readArray( Type* opnArray, sal_Int32 nElemCount );
+
+    /** Reads a vector of values from the stream.
+
+        The vector will be resized internally. Converts all values in the
+        vector to platform byte order. All data types supported by the
+        ByteOrderConverter class can be used.
+
+        @param nElemCount
+            Number of elements to put into the vector (NOT byte count).
+
+        @return
+            Number of vector elements really read (NOT byte count).
+     */
+    template< typename Type >
+    sal_Int32           readArray( ::std::vector< Type >& orVector, sal_Int32 nElemCount );
+
+    /** Reads a NUL-terminated Unicode character array and returns the string.
+     */
+    OUString     readNulUnicodeArray();
+
+    /** Reads a byte character array and returns the string.
+        NUL characters are replaced by question marks.
+
+        @param nChars
+            Number of characters (bytes) to read from the stream.
+     */
+    OString      readCharArray( sal_Int32 nChars );
+
+    /** Reads a byte character array and returns a Unicode string.
+        NUL characters are replaced by question marks.
+
+        @param nChars
+            Number of characters (bytes) to read from the stream.
+
+        @param eTextEnc
+            The text encoding used to create the Unicode string.
+     */
+    OUString     readCharArrayUC( sal_Int32 nChars, rtl_TextEncoding eTextEnc );
+
+    /** Reads a Unicode character array and returns the string.
+        NUL characters are replaced by question marks (default).
+
+        @param nChars
+            Number of 16-bit characters to read from the stream.
+     */
+    OUString     readUnicodeArray( sal_Int32 nChars );
+
+    /** Reads a Unicode character array (may be compressed) and returns the
+        string.
+        NUL characters are replaced by question marks (default).
+
+        @param nChars
+            Number of 8-bit or 16-bit characters to read from the stream.
+
+        @param bCompressed
+            True = Character array is compressed (stored as 8-bit characters).
+            False = Character array is not compressed (stored as 16-bit characters).
+     */
+    OUString     readCompressedUnicodeArray( sal_Int32 nChars, bool bCompressed );
+
+    /** Copies bytes from the current position to the passed output stream.
+     */
+    void         copyToStream( BinaryOutputStream& rOutStrm );
+
+protected:
+    /** This dummy default c'tor will never call the c'tor of the virtual base
+        class BinaryStreamBase as this class cannot be instantiated directly. */
+    BinaryInputStream() : BinaryStreamBase( false ) {}
+
+private:
+    BinaryInputStream( BinaryInputStream const& ) = delete;
+    BinaryInputStream& operator=( BinaryInputStream const& ) = delete;
+};
+
+typedef std::shared_ptr< BinaryInputStream > BinaryInputStreamRef;
+
+
+template< typename Type >
+Type BinaryInputStream::readValue()
+{
+    Type ornValue = Type();
+    readMemory( &ornValue, static_cast< sal_Int32 >( sizeof( Type ) ), sizeof( Type ) );
+    ByteOrderConverter::convertLittleEndian( ornValue );
+    return ornValue;
+}
+
+template< typename Type >
+sal_Int32 BinaryInputStream::readArray( Type* opnArray, sal_Int32 nElemCount )
+{
+    sal_Int32 nRet = 0;
+    if( !mbEof )
+    {
+        sal_Int32 nReadSize = getLimitedValue< sal_Int32, sal_Int32 >( nElemCount, 0, SAL_MAX_INT32 / sizeof( Type ) ) * sizeof( Type );
+        nRet = readMemory( opnArray, nReadSize, sizeof( Type ) ) / sizeof( Type );
+        ByteOrderConverter::convertLittleEndianArray( opnArray, static_cast< size_t >( nRet ) );
+    }
+    return nRet;
+}
+
+template< typename Type >
+sal_Int32 BinaryInputStream::readArray( ::std::vector< Type >& orVector, sal_Int32 nElemCount )
+{
+    orVector.resize( static_cast< size_t >( nElemCount ) );
+    return orVector.empty() ? 0 : readArray(orVector.data(), nElemCount);
+}
+
+
+/** Wraps a UNO input stream and provides convenient access functions.
+
+    The binary data in the stream is assumed to be in little-endian format.
+ */
+class OOX_DLLPUBLIC BinaryXInputStream final : public BinaryXSeekableStream, public BinaryInputStream
+{
+public:
+    /** Constructs the wrapper object for the passed input stream.
+
+        @param rxInStream
+            The com.sun.star.io.XInputStream interface of the UNO input stream
+            to be wrapped.
+
+        @param bAutoClose
+            True = automatically close the wrapped input stream on destruction
+            of this wrapper or when close() is called.
+     */
+    explicit            BinaryXInputStream(
+                            const css::uno::Reference< css::io::XInputStream >& rxInStrm,
+                            bool bAutoClose );
+
+    virtual             ~BinaryXInputStream() override;
+
+    /** Closes the input stream. Does also close the wrapped UNO input stream
+        if bAutoClose has been set to true in the constructor. */
+    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. This works for
+        non-seekable streams too. */
+    virtual void        skip( sal_Int32 nBytes, size_t nAtomSize = 1 ) override;
+
+private:
+    StreamDataSequence  maBuffer;       ///< Data buffer used in readMemory() function.
+    css::uno::Reference< css::io::XInputStream >
+                        mxInStrm;       ///< Reference to the input stream.
+    bool                mbAutoClose;    ///< True = automatically close stream on destruction.
+};
+
+
+/** Wraps a StreamDataSequence and provides convenient access functions.
+
+    The binary data in the stream is assumed to be in little-endian format.
+ */
+class OOX_DLLPUBLIC SequenceInputStream final : public SequenceSeekableStream, public BinaryInputStream
+{
+public:
+    /** Constructs the wrapper object for the passed data sequence.
+
+        @attention
+            The passed data sequence MUST live at least as long as this stream
+            wrapper. The data sequence MUST NOT be changed from outside as long
+            as this stream wrapper is used to read from it.
+     */
+    explicit            SequenceInputStream( const StreamDataSequence& rData );
+
+    /** 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. This works for
+        non-seekable streams too. */
+    virtual void        skip( sal_Int32 nBytes, size_t nAtomSize = 1 ) override;
+
+private:
+    /** Returns the number of bytes available in the sequence for the passed byte count. */
+    sal_Int32    getMaxBytes( sal_Int32 nBytes ) const
+                            { return getLimitedValue< sal_Int32, sal_Int32 >( nBytes, 0, mpData->getLength() - mnPos ); }
+};
+
+
+/** Wraps a BinaryInputStream and provides access to a specific part of the
+    stream data.
+
+    Provides access to the stream data block starting at the current position
+    of the stream, and with a specific length. If the wrapped stream is
+    seekable, this wrapper will treat the position of the wrapped stream at
+    construction time as position "0" (therefore the class name).
+
+    The passed input stream MUST live at least as long as this stream wrapper.
+    The stream MUST NOT be changed from outside as long as this stream wrapper
+    is used to read from it.
+ */
+class RelativeInputStream final : public BinaryInputStream
+{
+public:
+    /** Constructs the wrapper object for the passed stream.
+
+        @param nSize
+            If specified, restricts the amount of data that can be read from
+            the passed input stream.
+     */
+    explicit            RelativeInputStream(
+                            BinaryInputStream& rInStrm,
+                            sal_Int64 nSize );
+
+    /** Returns the size of the data block in the wrapped stream offered by
+        this wrapper. */
+    virtual sal_Int64   size() const override;
+
+    /** Returns the current relative stream position. */
+    virtual sal_Int64   tell() const override;
+
+    /** Seeks the stream to the passed relative position, if the wrapped stream
+        is seekable. */
+    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. Does not read out of the
+        data block whose size has been specified on construction.
+        @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. Does not read out of
+        the data block whose size has been specified on construction.
+        @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. This works for
+        non-seekable streams too. Does not seek out of the data block. */
+    virtual void        skip( sal_Int32 nBytes, size_t nAtomSize = 1 ) override;
+
+private:
+    /** Returns the number of bytes available in the sequence for the passed byte count. */
+    sal_Int32    getMaxBytes( sal_Int32 nBytes ) const
+                            { return getLimitedValue< sal_Int32, sal_Int64 >( nBytes, 0, mnSize - mnRelPos ); }
+
+private:
+    BinaryInputStream*  mpInStrm;
+    sal_Int64           mnStartPos;
+    sal_Int64           mnRelPos;
+    sal_Int64           mnSize;
+};
+
+
+} // namespace oox
+
+#endif
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */