Subversion Repositories planix.SVN

#pragma src     "/sys/src/libstdio"
#pragma lib     "libstdio.a"

/*
 * pANS astdio.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 */
        long bufl;      /* actual length of buffer */
        char unbuf[1];  /* tiny buffer for unbuffered io (used for ungetc?) */
}FILE;
typedef long fpos_t;
#ifndef NULL
#define NULL    ((void*)0)
#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       100             /* max files open */
#define FILENAME_MAX    BUFSIZ          /* silly filename length */
#define L_tmpnam        20              /* sizeof "/tmp/abcdefghij9999 */
#ifndef SEEK_SET                        /* also defined in unistd.h */
#define SEEK_CUR        1
#define SEEK_END        2
#define SEEK_SET        0
#endif
#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 */
FILE *tmpfile(void);
char *tmpnam(char *);
int fclose(FILE *);
int fflush(FILE *);
FILE *fopen(const char *, const char *);
FILE *fdopen(const int, const char *);
FILE *freopen(const char *, const char *, FILE *);
void setbuf(FILE *, char *);
int setvbuf(FILE *, char *, int, long);
int fprintf(FILE *, const char *, ...);
int fscanf(FILE *, const char *, ...);
int printf(const char *, ...);
int scanf(const char *, ...);
int sprintf(char *, const char *, ...);
int snprintf(char *, int, const char *, ...);
int sscanf(const char *, const char *, ...);
int vfprintf(FILE *, const char *, va_list);
int vprintf(const char *, va_list);
int vsprintf(char *, const char *, va_list);
int vsnprintf(char *, int, const char *, va_list);
int vfscanf(FILE *, const char *, va_list);
int fgetc(FILE *);
char *fgets(char *, int, FILE *);
int fputc(int, FILE *);
int fputs(const char *, FILE *);
int getc(FILE *);
#define getc(f) ((f)->rp>=(f)->wp?_IO_getc(f):*(f)->rp++&_IO_CHMASK)
int _IO_getc(FILE *f);
int getchar(void);
#define getchar()       getc(stdin)
char *gets(char *);
int putc(int, FILE *);
#define putc(c, f) ((f)->wp>=(f)->rp?_IO_putc(c, f):(*(f)->wp++=c)&_IO_CHMASK)
int _IO_putc(int, FILE *);
int putchar(int);
#define putchar(c)      putc(c, stdout)
int puts(const char *);
int ungetc(int, FILE *);
long fread(void *, long, long, FILE *);
long fwrite(const void *, long, long, FILE *);
int fgetpos(FILE *, fpos_t *);
int fseek(FILE *, long, int);
int fseeko(FILE *, long long, int);
int fsetpos(FILE *, const fpos_t *);
long ftell(FILE *);
long long ftello(FILE *);
void rewind(FILE *);
void clearerr(FILE *);
int feof(FILE *);
int ferror(FILE *);
void perror(const char *);
extern FILE _IO_stream[FOPEN_MAX];
FILE *sopenr(const char *);
FILE *sopenw(void);
char *sclose(FILE *);
int fileno(FILE *);