haiku/headers/private/kernel/stdio.h

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/* stdio.h
*/
#ifndef _STDIO_H
#define _STDIO_H
#include <ktypes.h>
#include <cdefs.h>
#include <stdarg.h>
#ifdef __cplusplus
extern "C" {
#endif
#define L_ctermid 32
#define L_cuserid 32
#define L_tmpnam 512
typedef off_t fpos_t; /* stdio file position type */
/* stdio buffers */
struct __sbuf {
unsigned char *_base;
int _size;
};
/*
* stdio state variables.
*
* The following always hold:
*
*if (_flags&(__SLBF|__SWR)) == (__SLBF|__SWR),
* _lbfsize is -_bf._size, else _lbfsize is 0
*if _flags&__SRD, _w is 0
*if _flags&__SWR, _r is 0
*
* This ensures that the getc and putc macros (or inline functions) never
* try to write or read from a file that is in `read' or `write' mode.
* (Moreover, they can, and do, automatically switch from read mode to
* write mode, and back, on "r+" and "w+" files.)
*
* _lbfsize is used only to make the inline line-buffered output stream
* code as compact as possible.
*
* _ub, _up, and _ur are used when ungetc() pushes back more characters
* than fit in the current _bf, or when ungetc() pushes back a character
* that does not match the previous one in _bf. When this happens,
* _ub._base becomes non-nil (i.e., a stream has ungetc() data iff
* _ub._base!=NULL) and _up and _ur save the current values of _p and _r.
*/
typedef struct __FILE {
unsigned char *_p;/* current position in (some) buffer */
int _r; /* read space left for getc() */
int _w; /* write space left for putc() */
short _flags; /* flags, below; this FILE is free if 0 */
short _file; /* fileno, if Unix descriptor, else -1 */
struct __sbuf _bf; /* the buffer (at least 1 byte, if !NULL) */
int _lbfsize;/* 0 or -_bf._size, for inline putc */
/* operations */
void *_cookie;/* cookie passed to io functions */
int (*_close) (void *);
int (*_read) (void *, char *, int);
fpos_t (*_seek) (void *, fpos_t, int);
int (*_write) (void *, const char *, int);
/* separate buffer for long sequences of ungetc() */
struct __sbuf _ub; /* ungetc buffer */
unsigned char *_up; /* saved _p when _p is doing ungetc data */
int _ur;/* saved _r when _r is counting ungetc data */
/* tricks to meet minimum requirements even when malloc() fails */
unsigned char _ubuf[3]; /* guarantee an ungetc() buffer */
unsigned char _nbuf[1]; /* guarantee a getc() buffer */
/* separate buffer for fgetln() when line crosses buffer boundary */
struct __sbuf _lb; /* buffer for fgetln() */
/* Unix stdio files get aligned to block boundaries on fseek() */
int _blksize;/* stat.st_blksize (may be != _bf._size) */
fpos_t _offset;/* current lseek offset */
} FILE;
#define __SLBF 0x0001 /* line buffered */
#define __SNBF 0x0002 /* unbuffered */
#define __SRD 0x0004 /* OK to read */
#define __SWR 0x0008 /* OK to write */
/* RD and WR are never simultaneously asserted */
#define __SRW 0x0010 /* open for reading & writing */
#define __SEOF 0x0020 /* found EOF */
#define __SERR 0x0040 /* found error */
#define __SMBF 0x0080 /* _buf is from malloc */
#define __SAPP 0x0100 /* fdopen()ed in append mode */
#define __SSTR 0x0200 /* this is an sprintf/snprintf string */
#define __SOPT 0x0400 /* do fseek() optimisation */
#define __SNPT 0x0800 /* do not do fseek() optimisation */
#define __SOFF 0x1000 /* set iff _offset is in fact correct */
#define __SMOD 0x2000 /* true => fgetln modified _p text */
#define __SALC 0x4000 /* allocate string space dynamically */
/*
* FOPEN_MAX is a minimum maximum, and should be the number of descriptors
* that the kernel can provide without allocation of a resource that can
* fail without the process sleeping. Do not use this for anything
*/
#define FOPEN_MAX 20 /* must be <= OPEN_MAX <sys/syslimits.h> */
#define BUFSIZ 1024
extern FILE __sF[];
#define stdin (&__sF[0])
#define stdout (&__sF[1])
#define stderr (&__sF[2])
//extern FILE *stdout;
//extern FILE *stderr;
#ifndef SEEK_SET
#define SEEK_SET 0
#endif
#ifndef SEEK_CUR
#define SEEK_CUR 1
#endif
#ifndef SEEK_END
#define SEEK_END 2
#endif
#define EOF -1
int printf(char const *format, ...) __PRINTFLIKE(1,2);
int fprintf(FILE *stream, char const *format, ...) __PRINTFLIKE(2,3);
int sprintf(char *str, char const *format, ...) __PRINTFLIKE(2,3);
int snprintf(char *str, size_t size, char const *format, ...) __PRINTFLIKE(3,4);
int asprintf(char **ret, char const *format, ...) __PRINTFLIKE(2,3);
int vprintf(char const *format, va_list ap);
int vfprintf(FILE *stream, char const *format, va_list ap);
int vsprintf(char *str, char const *format, va_list ap);
int vsnprintf(char *str, size_t size, char const *format, va_list ap);
int vasprintf(char **ret, char const *format, va_list ap);
void clearerr(FILE *);
int fclose(FILE *);
int feof(FILE *);
int fflush(FILE *);
int fgetc(FILE *);
char *fgetln(FILE *, size_t *);
int fgetpos(FILE *, fpos_t);
char *fgets(char *, int, FILE *);
void flockfile(FILE *);
FILE *fopen(char const *, char const *);
int fputc(int, FILE *);
int fputs(const char *, FILE*);
size_t fread(void *, size_t, size_t, FILE *);
int fscanf(FILE *stream, char const *format, ...);
int fseek(FILE *, long, int);
int fseeko(FILE *, off_t, int);
size_t fwrite(const void *, size_t, size_t, FILE *);
void funlockfile(FILE *);
int getc(FILE *);
char *gets(char *);
int getw(FILE *);
int getchar(void);
int putc(int, FILE *);
int putchar(int);
int puts(const char *);
int putw(int, FILE *);
void rewind(FILE *);
int scanf(char const *format, ...);
int sscanf(char const *str, char const *format, ...);
int ungetc(int, FILE *);
int vscanf(char const *format, va_list ap);
int vsscanf(char const *str, char const *format, va_list ap);
int vfscanf(FILE *stream, char const *format, va_list ap);
int __srget(FILE *);
int __svfscanf(FILE *, char const *, va_list ap);
int __swbuf(int c, FILE* fp);
#define __sgetc(p) (--(p)->_r < 0 ? __srget(p) : (int)(*(p)->_p++))
static __inline int __sputc(int _c, FILE *_p) {
if (--_p->_w >= 0 || (_p->_w >= _p->_lbfsize && (char)_c != '\n'))
return (*_p->_p++ = _c);
else
return (__swbuf(_c, _p));
}
#define __sfeof(x) (((x)->_flags & __SEOF) != 0)
#define __sferror(x) (((x)->_flags & __SERR) != 0)
#define feof(x) __sfeof(x)
#define ferror(x) __sferror(x)
#ifdef __cplusplus
}
#endif
#endif /* _STDIO_H */