ref: 45f3c56a53334cc7614e1a5e55c938df4c7d5239
dir: /sys/include/ape/stdio.h/
#ifndef _STDIO_H_ #define _STDIO_H_ #pragma lib "/$M/lib/ape/libap.a" /* * pANS stdio.h */ #include <stdarg.h> #include <stddef.h> #include <sys/types.h> /* * According to X3J11, there is only one i/o buffer * and it must not be occupied by both input and output data. * If rp<wp, we must have state==RD and * if wp<rp, we must have state==WR, so that getc and putc work correctly. * On open, rp, wp and buf are set to 0, so first getc or putc will call _IO_getc * or _IO_putc, which will allocate the buffer. * If setvbuf(., ., _IONBF, .) is called, bufl is set to 0 and * buf, rp and wp are pointed at unbuf. * If setvbuf(., ., _IOLBF, .) is called, _IO_putc leaves wp and rp pointed at the * end of the buffer so that it can be called on each putc to check whether it's got * a newline. This nonsense is in order to avoid impacting performance of the other * buffering modes more than necessary -- putting the test in putc adds many * instructions that are wasted in non-_IOLBF mode: * #define putc(c, f) (_IO_ctmp=(c),\ * (f)->wp>=(f)->rp || (f)->flags&LINEBUF && _IO_ctmp=='\n'\ * ?_IO_putc(_IO_ctmp, f)\ * :*(f)->wp++=_IO_ctmp) * */ typedef struct{ int fd; /* UNIX file pointer */ char flags; /* bits for must free buffer on close, line-buffered */ char state; /* last operation was read, write, position, error, eof */ char *buf; /* pointer to i/o buffer */ char *rp; /* read pointer (or write end-of-buffer) */ char *wp; /* write pointer (or read end-of-buffer) */ char *lp; /* actual write pointer used when line-buffering */ size_t bufl; /* actual length of buffer */ char unbuf[1]; /* tiny buffer for unbuffered io (used for ungetc?) */ }FILE; typedef long long fpos_t; #ifndef NULL #ifdef __cplusplus #define NULL 0 #else #define NULL ((void*)0) #endif #endif /* * Third arg of setvbuf */ #define _IOFBF 1 /* block-buffered */ #define _IOLBF 2 /* line-buffered */ #define _IONBF 3 /* unbuffered */ #define BUFSIZ 4096 /* size of setbuf buffer */ #define EOF (-1) /* returned on end of file */ #define FOPEN_MAX 90 /* max files open */ #define FILENAME_MAX BUFSIZ /* silly filename length */ #define L_tmpnam 20 /* sizeof "/tmp/abcdefghij9999 */ #define L_cuserid 32 /* maximum size user name */ #define L_ctermid 32 /* size of name of controlling tty */ #define SEEK_CUR 1 #define SEEK_END 2 #define SEEK_SET 0 #define TMP_MAX 64 /* very hard to set correctly */ #define stderr (&_IO_stream[2]) #define stdin (&_IO_stream[0]) #define stdout (&_IO_stream[1]) #define _IO_CHMASK 0377 /* mask for 8 bit characters */ #ifdef __cplusplus extern "C" { #endif extern int remove(const char *); extern int rename(const char *, const char *); extern FILE *tmpfile(void); extern char *tmpnam(char *); extern int fclose(FILE *); extern int fflush(FILE *); extern FILE *fopen(const char *, const char *); extern FILE *freopen(const char *, const char *, FILE *); extern void setbuf(FILE *, char *); extern int setvbuf(FILE *, char *, int, size_t); extern int fprintf(FILE *, const char *, ...); extern int fscanf(FILE *, const char *, ...); extern int printf(const char *, ...); extern int scanf(const char *, ...); extern int sprintf(char *, const char *, ...); #ifdef _C99_SNPRINTF_EXTENSION /* user knows about c99 out-of-bounds returns */ extern int snprintf(char *, size_t, const char *, ...); extern int vsnprintf(char *, size_t, const char *, va_list); #else /* draw errors on any attempt to use *snprintf value so old code gets changed */ extern void snprintf(char *, size_t, const char *, ...); extern void vsnprintf(char *, size_t, const char *, va_list); #endif extern int sscanf(const char *, const char *, ...); extern int vfprintf(FILE *, const char *, va_list); extern int vprintf(const char *, va_list); extern int vsprintf(char *, const char *, va_list); extern int vfscanf(FILE *, const char *, va_list); extern int fgetc(FILE *); extern char *fgets(char *, int, FILE *); extern int fputc(int, FILE *); extern int fputs(const char *, FILE *); extern int getc(FILE *); #define getc(f) ((f)->rp>=(f)->wp?_IO_getc(f):*(f)->rp++&_IO_CHMASK) extern int _IO_getc(FILE *f); extern int getchar(void); #define getchar() getc(stdin) extern char *gets(char *); extern int putc(int, FILE *); #define putc(c, f) ((f)->wp>=(f)->rp?_IO_putc(c, f):(*(f)->wp++=c)&_IO_CHMASK) extern int _IO_putc(int, FILE *); extern int putchar(int); #define putchar(c) putc(c, stdout) extern int puts(const char *); extern int ungetc(int, FILE *); extern size_t fread(void *, size_t, size_t, FILE *); extern size_t fwrite(const void *, size_t, size_t, FILE *); extern int fgetpos(FILE *, fpos_t *); extern int fseek(FILE *, long, int); extern int fseeko(FILE *, off_t, int); extern int fsetpos(FILE *, const fpos_t *); extern long ftell(FILE *); extern off_t ftello(FILE *); extern void rewind(FILE *); extern void clearerr(FILE *); extern int feof(FILE *); extern int ferror(FILE *); extern void perror(const char *); extern FILE _IO_stream[FOPEN_MAX]; #ifdef _POSIX_SOURCE extern int fileno(FILE *); extern FILE* fdopen(int, const char*); extern char *ctermid(char *); #endif #ifdef _REENTRANT_SOURCE extern char *tmpnam_r(char *); extern char *ctermid_r(char *); #endif #ifdef _BSD_EXTENSION #pragma lib "/$M/lib/ape/libbsd.a" extern FILE *popen(char *, char *); extern int pclose(FILE *); #endif #ifdef __cplusplus } #endif #endif