#ifndef LIBIO_H
#define LIBIO_H

#include <stdlib.h>
#include <unistd.h>
#include <fcntl.h>
#include <string.h>
#include <stdarg.h>
#include <stdio.h>
#include <errno.h>

#define BUFSIZE 4096*32

struct file_t;
struct file_t {
   ssize_t cur,         /* Index of the current symbol. */
           end;         /* Index of the last symbols. */
  /* off_t offset;*/      /* File offset of the last reading/writing.
                         * Can be changed by file_seek ( I don't need it ).
                         */
   unsigned char *buf;           /* Buffer. Allocated while I/O. Need to be void*? */
   int fd;              /* Fire Destory. */
};


typedef struct file_t FILE_T;


extern FILE_T std_streams[3];

#define STDINF       (&std_streams[0])
#define STDOUTF      (&std_streams[1])
#define STDERRF      (&std_streams[2])

FILE_T *file_open( const char* path, int flags );
int file_close( FILE_T* file );
int file_fd( FILE_T *file );
ssize_t file_read( FILE_T *file, char *buf, size_t size, size_t nmem );
void file_fresh( FILE_T *file );

int fgetchr( FILE_T *file );
int wgetchr( struct file_t *file, char *bytes);
void perrnum( const char* src );

/* No buffer. No more. */
int fprint( int fd, const char* fmt, ... );

#define print( fmt,... ) fprint( STDOUT_FILENO, fmt, __VA_ARGS__ )
#define eprint( fmt,... ) fprint( STDERR_FILENO, fmt, __VA_ARGS__ )
#define puts( msg ) fprint( STDOUT_FILENO, msg )
#define eputs( msg ) fprint( STDERR_FILENO, msg )

int putstr( int fd, const char* str );
int putchr( int fd, char c );
ssize_t getstr( int fd, char *buf, size_t len );

#endif /* LIBIO_H*/