SFML/include/SFML/System/MemoryInputStream.hpp
Mario Liebisch a1d4bc80c2 Changed Doxygen single-line comment format
Single line comments starting with `///` are interpreted by
Microsoft Visual Studio as documentation containing XML code.

Therefore single line comments starting with `///<` unfortunately
cause a parsing error, as IntelliSense will assume the `<` is the
start of an XML tag. This is not the case, but unfortunately,
IntelliSense will still complain about the following space
character rather than displaying the raw string. This commit alters
all such comments to start with `//!<` instead, which prevents the
issue.

This fixes issue #1622.
2020-01-02 15:25:57 +01:00

149 lines
5.1 KiB
C++

////////////////////////////////////////////////////////////
//
// SFML - Simple and Fast Multimedia Library
// Copyright (C) 2007-2019 Laurent Gomila (laurent@sfml-dev.org)
//
// This software is provided 'as-is', without any express or implied warranty.
// In no event will the authors be held liable for any damages arising from the use of this software.
//
// Permission is granted to anyone to use this software for any purpose,
// including commercial applications, and to alter it and redistribute it freely,
// subject to the following restrictions:
//
// 1. The origin of this software must not be misrepresented;
// you must not claim that you wrote the original software.
// If you use this software in a product, an acknowledgment
// in the product documentation would be appreciated but is not required.
//
// 2. Altered source versions must be plainly marked as such,
// and must not be misrepresented as being the original software.
//
// 3. This notice may not be removed or altered from any source distribution.
//
////////////////////////////////////////////////////////////
#ifndef SFML_MEMORYINPUTSTREAM_HPP
#define SFML_MEMORYINPUTSTREAM_HPP
////////////////////////////////////////////////////////////
// Headers
////////////////////////////////////////////////////////////
#include <SFML/Config.hpp>
#include <SFML/System/InputStream.hpp>
#include <SFML/System/Export.hpp>
#include <cstdlib>
namespace sf
{
////////////////////////////////////////////////////////////
/// \brief Implementation of input stream based on a memory chunk
///
////////////////////////////////////////////////////////////
class SFML_SYSTEM_API MemoryInputStream : public InputStream
{
public:
////////////////////////////////////////////////////////////
/// \brief Default constructor
///
////////////////////////////////////////////////////////////
MemoryInputStream();
////////////////////////////////////////////////////////////
/// \brief Open the stream from its data
///
/// \param data Pointer to the data in memory
/// \param sizeInBytes Size of the data, in bytes
///
////////////////////////////////////////////////////////////
void open(const void* data, std::size_t sizeInBytes);
////////////////////////////////////////////////////////////
/// \brief Read data from the stream
///
/// After reading, the stream's reading position must be
/// advanced by the amount of bytes read.
///
/// \param data Buffer where to copy the read data
/// \param size Desired number of bytes to read
///
/// \return The number of bytes actually read, or -1 on error
///
////////////////////////////////////////////////////////////
virtual Int64 read(void* data, Int64 size);
////////////////////////////////////////////////////////////
/// \brief Change the current reading position
///
/// \param position The position to seek to, from the beginning
///
/// \return The position actually sought to, or -1 on error
///
////////////////////////////////////////////////////////////
virtual Int64 seek(Int64 position);
////////////////////////////////////////////////////////////
/// \brief Get the current reading position in the stream
///
/// \return The current position, or -1 on error.
///
////////////////////////////////////////////////////////////
virtual Int64 tell();
////////////////////////////////////////////////////////////
/// \brief Return the size of the stream
///
/// \return The total number of bytes available in the stream, or -1 on error
///
////////////////////////////////////////////////////////////
virtual Int64 getSize();
private:
////////////////////////////////////////////////////////////
// Member data
////////////////////////////////////////////////////////////
const char* m_data; //!< Pointer to the data in memory
Int64 m_size; //!< Total size of the data
Int64 m_offset; //!< Current reading position
};
} // namespace sf
#endif // SFML_MEMORYINPUTSTREAM_HPP
////////////////////////////////////////////////////////////
/// \class sf::MemoryInputStream
/// \ingroup system
///
/// This class is a specialization of InputStream that
/// reads from data in memory.
///
/// It wraps a memory chunk in the common InputStream interface
/// and therefore allows to use generic classes or functions
/// that accept such a stream, with content already loaded in memory.
///
/// In addition to the virtual functions inherited from
/// InputStream, MemoryInputStream adds a function to
/// specify the pointer and size of the data in memory.
///
/// SFML resource classes can usually be loaded directly from
/// memory, so this class shouldn't be useful to you unless
/// you create your own algorithms that operate on an InputStream.
///
/// Usage example:
/// \code
/// void process(InputStream& stream);
///
/// MemoryInputStream stream;
/// stream.open(thePtr, theSize);
/// process(stream);
/// \endcode
///
/// InputStream, FileInputStream
///
////////////////////////////////////////////////////////////