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