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file_inputprovider.h

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/*
        $Id: file_inputprovider.h,v 1.4 2001/03/04 17:54:47 mbn Exp $

        ------------------------------------------------------------------------
        ClanLib, the platform independent game SDK.

        This library is distributed under the GNU LIBRARY GENERAL PUBLIC LICENSE
        version 2. See COPYING for details.

        For a total list of contributers see CREDITS.

        ------------------------------------------------------------------------

        File purpose:
                File input source provider, part of the i/o data component.

*/


#ifndef header_file_inputprovider
#define header_file_inputprovider

#include "inputsource.h"

#include <stack>
#include <stdio.h>

class CL_InputSourceProvider_File : public CL_InputSourceProvider
{
public:

        CL_InputSourceProvider_File(const char *path);
        virtual CL_InputSource *open_source(const char *filename);
        virtual CL_InputSourceProvider *clone();
protected:
        std::string provider_path;
};

class CL_InputSource_File : public CL_InputSource
{
protected:
        std::stack<int> stack;
        std::string filename;
        FILE *filehandle;
        int filesize;

public:
        CL_InputSource_File(const char *filename);
        CL_InputSource_File(const CL_InputSource_File *source);
        virtual ~CL_InputSource_File();

        // Change input data endianess (defaults to little endian)
        virtual void set_system_mode();
        virtual void set_big_endian_mode();
        virtual void set_little_endian_mode();

        // read 32 bit integer:
        virtual int read_int32();
        virtual unsigned int read_uint32();

        // read 16 bit short:
        virtual short read_short16();
        virtual unsigned short read_ushort16();

        // read 8 bit char:
        virtual char read_char8();
        virtual unsigned char read_uchar8();

        virtual float read_float32();

        // read larger amounts of data (no endian and 64 bit conversion):
        // returns num bytes actually read
        virtual int read(void *data, int size);

        virtual void open();
        virtual void close();

        // Make a copy of the current InputSource, standing at the same position.
        virtual CL_InputSource *clone() const;

        // Returns current position in input source
        virtual int tell() const;
        virtual void seek(int pos, SeekEnum seek_type);

        // Returns the size of the input source
        virtual int size() const;

        virtual std::string read_string();

        virtual void push_position();
        virtual void pop_position();
};

#endif

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