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stdio.h
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C/C++ Source or Header
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2005-10-29
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3KB
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121 lines
/*
* stdio.h
*/
#ifndef _STDIO_H
#define _STDIO_H
#include <klibc/extern.h>
#include <stdarg.h>
#include <stddef.h>
/* This structure doesn't really exist, but it gives us something
to define FILE * with */
struct _IO_file;
typedef struct _IO_file FILE;
#ifndef EOF
# define EOF (-1)
#endif
#ifndef BUFSIZ
# define BUFSIZ 4096
#endif
#define SEEK_SET 0
#define SEEK_CUR 1
#define SEEK_END 2
/*
* Convert between a FILE * and a file descriptor. We don't actually
* have any in-memory data, so we just abuse the pointer itself to
* hold the data. Note, however, that for file descriptors, -1 is
* error and 0 is a valid value; for FILE *, NULL (0) is error and
* non-NULL are valid.
*/
static __inline__ int fileno(FILE *__f)
{
/* This should really be intptr_t, but size_t should be the same size */
return (int)(size_t)__f - 1;
}
/* This is a macro so it can be used as initializer */
#define __create_file(__fd) ((FILE *)(size_t)((__fd) + 1))
#define stdin __create_file(0)
#define stdout __create_file(1)
#define stderr __create_file(2)
__extern FILE *fopen(const char *, const char *);
struct dev_info;
__extern FILE *fopendev(const struct dev_info *, const char *);
static __inline__ FILE *fdopen(int __fd, const char *__m)
{
(void)__m; return __create_file(__fd);
}
static __inline__ int fclose(FILE *__f)
{
extern int close(int);
return close(fileno(__f));
}
__extern int fputs(const char *, FILE *);
__extern int puts(const char *);
__extern int fputc(int, FILE *);
#define putc(c,f) fputc((c),(f))
#define putchar(c) fputc((c),stdout)
__extern int fgetc(FILE *);
__extern char * fgets(char *, int, FILE *);
#define getc(f) fgetc(f)
__extern size_t _fread(void *, size_t, FILE *);
__extern size_t _fwrite(const void *, size_t, FILE *);
#ifndef __NO_FREAD_FWRITE_INLINES
extern __inline__ size_t
fread(void *__p, size_t __s, size_t __n, FILE *__f)
{
return _fread(__p, __s*__n, __f)/__s;
}
extern __inline__ size_t
fwrite(void *__p, size_t __s, size_t __n, FILE *__f)
{
return _fwrite(__p, __s*__n, __f)/__s;
}
#endif
/* No seek, but we can tell */
__extern long ftell(FILE *);
__extern int printf(const char *, ...);
__extern int vprintf(const char *, va_list);
__extern int fprintf(FILE *, const char *, ...);
__extern int vfprintf(FILE *, const char *, va_list);
__extern int sprintf(char *, const char *, ...);
__extern int vsprintf(char *, const char *, va_list);
__extern int snprintf(char *, size_t n, const char *, ...);
__extern int vsnprintf(char *, size_t n, const char *, va_list);
__extern int asprintf(char **, const char *, ...);
__extern int vasprintf(char **, const char *, va_list);
/* No buffering, so no flushing needed */
extern __inline__ int
fflush(FILE *__f)
{
(void)__f;
return 0;
}
__extern int sscanf(const char *, const char *, ...);
__extern int vsscanf(const char *, const char *, va_list);
__extern void perror(const char *);
__extern int rename(const char *, const char *);
#endif /* _STDIO_H */