diff options
Diffstat (limited to 'shf.h')
-rw-r--r-- | shf.h | 87 |
1 files changed, 87 insertions, 0 deletions
@@ -0,0 +1,87 @@ +/* $NetBSD: shf.h,v 1.3 1999/10/20 15:10:00 hubertf Exp $ */ + +#ifndef SHF_H +# define SHF_H + +/* + * Shell file I/O routines + */ +/* $Id: shf.h,v 1.3 1999/10/20 15:10:00 hubertf Exp $ */ + +#define SHF_BSIZE 512 + +#define shf_fileno(shf) ((shf)->fd) +#define shf_setfileno(shf,nfd) ((shf)->fd = (nfd)) +#define shf_getc(shf) ((shf)->rnleft > 0 ? (shf)->rnleft--, *(shf)->rp++ : \ + shf_getchar(shf)) +#define shf_putc(c, shf) ((shf)->wnleft == 0 ? shf_putchar((c), (shf)) \ + : ((shf)->wnleft--, *(shf)->wp++ = (c))) +#define shf_eof(shf) ((shf)->flags & SHF_EOF) +#define shf_error(shf) ((shf)->flags & SHF_ERROR) +#define shf_errno(shf) ((shf)->errno_) +#define shf_clearerr(shf) ((shf)->flags &= ~(SHF_EOF | SHF_ERROR)) + +/* Flags passed to shf_*open() */ +#define SHF_RD 0x0001 +#define SHF_WR 0x0002 +#define SHF_RDWR (SHF_RD|SHF_WR) +#define SHF_ACCMODE 0x0003 /* mask */ +#define SHF_GETFL 0x0004 /* use fcntl() to figure RD/WR flags */ +#define SHF_UNBUF 0x0008 /* unbuffered I/O */ +#define SHF_CLEXEC 0x0010 /* set close on exec flag */ +#define SHF_MAPHI 0x0020 /* make fd > FDBASE (and close orig) + * (shf_open() only) */ +#define SHF_DYNAMIC 0x0040 /* string: increase buffer as needed */ +#define SHF_INTERRUPT 0x0080 /* EINTR in read/write causes error */ +/* Flags used internally */ +#define SHF_STRING 0x0100 /* a string, not a file */ +#define SHF_ALLOCS 0x0200 /* shf and shf->buf were alloc()ed */ +#define SHF_ALLOCB 0x0400 /* shf->buf was alloc()ed */ +#define SHF_ERROR 0x0800 /* read()/write() error */ +#define SHF_EOF 0x1000 /* read eof (sticky) */ +#define SHF_READING 0x2000 /* currently reading: rnleft,rp valid */ +#define SHF_WRITING 0x4000 /* currently writing: wnleft,wp valid */ + + +struct shf { + int flags; /* see SHF_* */ + unsigned char *rp; /* read: current position in buffer */ + int rbsize; /* size of buffer (1 if SHF_UNBUF) */ + int rnleft; /* read: how much data left in buffer */ + unsigned char *wp; /* write: current position in buffer */ + int wbsize; /* size of buffer (0 if SHF_UNBUF) */ + int wnleft; /* write: how much space left in buffer */ + unsigned char *buf; /* buffer */ + int fd; /* file descriptor */ + int errno_; /* saved value of errno after error */ + int bsize; /* actual size of buf */ + Area *areap; /* area shf/buf were allocated in */ +}; + +extern struct shf shf_iob[]; + +struct shf *shf_open ARGS((const char *name, int oflags, int mode, + int sflags)); +struct shf *shf_fdopen ARGS((int fd, int sflags, struct shf *shf)); +struct shf *shf_reopen ARGS((int fd, int sflags, struct shf *shf)); +struct shf *shf_sopen ARGS((char *buf, int bsize, int sflags, + struct shf *shf)); +int shf_close ARGS((struct shf *shf)); +int shf_fdclose ARGS((struct shf *shf)); +char *shf_sclose ARGS((struct shf *shf)); +int shf_finish ARGS((struct shf *shf)); +int shf_flush ARGS((struct shf *shf)); +int shf_seek ARGS((struct shf *shf, off_t where, int from)); +int shf_read ARGS((char *buf, int bsize, struct shf *shf)); +char *shf_getse ARGS((char *buf, int bsize, struct shf *shf)); +int shf_getchar ARGS((struct shf *shf)); +int shf_ungetc ARGS((int c, struct shf *shf)); +int shf_putchar ARGS((int c, struct shf *shf)); +int shf_puts ARGS((const char *s, struct shf *shf)); +int shf_write ARGS((const char *buf, int nbytes, struct shf *shf)); +int shf_fprintf ARGS((struct shf *shf, const char *fmt, ...)); +int shf_snprintf ARGS((char *buf, int bsize, const char *fmt, ...)); +char *shf_smprintf ARGS((const char *fmt, ...)); +int shf_vfprintf ARGS((struct shf *, const char *fmt, va_list args)); + +#endif /* SHF_H */ |