beetle-pce-fast-libretro/mednafen/file.h
2012-12-30 04:04:25 +01:00

110 lines
2.3 KiB
C++

#ifndef MDFN_FILE_H
#define MDFN_FILE_H
#include <string>
#define MDFNFILE_EC_NOTFOUND 1
#define MDFNFILE_EC_OTHER 2
class MDFNFILE
{
public:
MDFNFILE();
// WIP constructors:
MDFNFILE(const char *path, const void *known_ext, const char *purpose = NULL);
~MDFNFILE();
bool Open(const char *path, const void *known_ext, const char *purpose = NULL, const bool suppress_notfound_pe = FALSE);
INLINE bool Open(const std::string &path, const void *known_ext, const char *purpose = NULL, const bool suppress_notfound_pe = FALSE)
{
return(Open(path.c_str(), known_ext, purpose, suppress_notfound_pe));
}
bool ApplyIPS(void*);
bool Close(void);
uint64 fread(void *ptr, size_t size, size_t nmemb);
int fseek(int64 offset, int whence);
inline uint64 ftell(void)
{
return(location);
}
inline void rewind(void)
{
location = 0;
}
int read32le(uint32 *Bufo);
int read16le(uint16 *Bufo);
inline int fgetc(void)
{
if(location < f_size)
return f_data[location++];
return EOF;
}
inline int fisarchive(void)
{
return(0);
}
char *fgets(char *s, int size);
uint8 *f_data;
int64 f_size;
char *f_ext;
private:
int64 location;
bool MakeMemWrapAndClose(void *tz);
};
class PtrLengthPair
{
public:
inline PtrLengthPair(const void *new_data, const uint64 new_length)
{
data = new_data;
length = new_length;
}
~PtrLengthPair()
{
}
INLINE const void *GetData(void) const
{
return(data);
}
INLINE uint64 GetLength(void) const
{
return(length);
}
private:
const void *data;
uint64 length;
};
#include <vector>
// These functions should be used for data like save states and non-volatile backup memory.
// Until(if, even) we add LoadFromFile functions, for reading the files these functions generate, just use gzopen(), gzread(), etc.
// "compress" is set to the zlib compression level. 0 disables compression entirely, and dumps the file without a gzip header or footer.
// (Note: There is a setting that will force compress to 0 in the internal DumpToFile logic, for hackers who don't want to ungzip save files.)
bool MDFN_DumpToFile(const char *filename, int compress, const void *data, const uint64 length);
bool MDFN_DumpToFile(const char *filename, int compress, const std::vector<PtrLengthPair> &pearpairs);
#endif