90 lines
2.5 KiB
C++
90 lines
2.5 KiB
C++
/* Mednafen - Multi-system Emulator
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#ifndef __MDFN_FILESTREAM_H
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#define __MDFN_FILESTREAM_H
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#include "Stream.h"
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#include "error.h"
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#include <stdio.h>
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#include <string>
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class FileStream : public Stream
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{
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public:
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enum
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{
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MODE_READ = 0,
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MODE_WRITE,
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MODE_WRITE_SAFE, // Will throw an exception instead of overwriting an existing file.
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MODE_WRITE_INPLACE, // Like MODE_WRITE, but won't truncate the file if it already exists.
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};
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FileStream(const std::string& path, const int mode);
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virtual ~FileStream() override;
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virtual uint64 attributes(void) override;
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virtual uint8 *map(void) noexcept override;
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virtual uint64 map_size(void) noexcept override;
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virtual void unmap(void) noexcept override;
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virtual uint64 read(void *data, uint64 count, bool error_on_eos = true) override;
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virtual void write(const void *data, uint64 count) override;
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virtual void truncate(uint64 length) override;
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virtual void seek(int64 offset, int whence) override;
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virtual uint64 tell(void) override;
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virtual uint64 size(void) override;
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virtual void flush(void) override;
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virtual void close(void) override;
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virtual int get_line(std::string &str) override;
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INLINE int get_char(void)
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{
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int ret;
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errno = 0;
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ret = fgetc(fp);
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if(MDFN_UNLIKELY(errno != 0))
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{
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ErrnoHolder ene(errno);
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throw(MDFN_Error(ene.Errno(), ("Error reading from opened file \"%s\": %s"), path_save.c_str(), ene.StrError()));
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}
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return(ret);
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}
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private:
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FileStream & operator=(const FileStream &); // Assignment operator
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FileStream(const FileStream &); // Copy constructor
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//FileStream(FileStream &); // Copy constructor
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FILE *fp;
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std::string path_save;
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const int OpenedMode;
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void* mapping;
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uint64 mapping_size;
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};
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#endif
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