#pragma once

#include <stddef.h>
#include <stdarg.h>
#include <sys/cdefs.h>
#include <sys/types.h>

#define EOF (-1)

#define stdin stdin
#define stdout stdout
#define stderr stderr

#define SEEK_CUR 1
#define SEEK_END 2
#define SEEK_SET 3

#define _IOFBF 1
#define _IOLBF 2
#define _IONBF 3

#define EXIT_FAILURE 1
#define EXIT_SUCCESS 0

#define L_ctermid 50

#define BUFSIZ 128

#define FOPEN_MAX 16

__BEGIN_DECLS

struct FILE;
typedef struct FILE FILE;

typedef uint64_t fpos_t;

extern FILE* stdin;
extern FILE* stdout;
extern FILE* stderr;


// https://pubs.opengroup.org/onlinepubs/9699919799/basedefs/stdio.h.html
void	clearerr(FILE*);
char*	ctermid(char*);
int		fclose(FILE*);
FILE*	fdopen(int, const char*);
int		feof(FILE*);
int		ferror(FILE*);
int		fflush(FILE*);
int		fgetc(FILE*);
int		fgetpos(FILE*, fpos_t*);
char*	fgets(char*, int, FILE*);
int		fileno(FILE*);
void	flockfile(FILE*);
FILE*	fopen(const char*, const char*);
int		fprintf(FILE*, const char*, ...);
int		fputc(int, FILE*);
int		fputs(const char*, FILE*);
size_t	fread(void*, size_t, size_t, FILE*);
FILE*	freopen(const char*, const char*, FILE*);
int		fscanf(FILE*, const char*, ...);
int		fseek(FILE*, long, int);
int		fseeko(FILE*, off_t, int);
int		fsetpos(FILE*, const fpos_t*);
long	ftell(FILE*);
off_t	ftello(FILE*);
int		ftrylockfile(FILE*);
void	funlockfile(FILE*);
size_t	fwrite(const void*, size_t, size_t, FILE*);
int		getc(FILE*);
int		getchar(void);
int		getc_unlocked(FILE*);
int		getchar_unlocked(void);
char*	gets(char*);
int		pclose(FILE*);
void	perror(const char*);
FILE*	popen(const char*, const char*);
int		printf(const char*, ...);
int		putc(int, FILE*);
int		putchar(int);
int		putc_unlocked(int, FILE*);
int		putchar_unlocked(int);
int		puts(const char*);
int		remove(const char*);
int		rename(const char*, const char*);
void	rewind(FILE*);
int		scanf(const char*, ...);
void	setbuf(FILE*, char*);
int		setvbuf(FILE*, char*, int, size_t);
int		snprintf(char*, size_t, const char*, ...);
int		sprintf(char*, const char*, ...);
int		sscanf(const char*, const char*, ...);
char*	tempnam(const char*, const char*);
FILE*	tmpfile(void);
char*	tmpnam(char*);
int		ungetc(int, FILE*);
int		vfprintf(FILE*, const char*, va_list);
int		vfscanf(FILE*, const char*, va_list);
int		vprintf(const char*, va_list);
int		vscanf(const char*, va_list);
int		vsnprintf(char*, size_t, const char*, va_list);
int		vsprintf(char*, const char*, va_list);
int		vsscanf(const char*, const char*, va_list);

__END_DECLS