iobuf_common.h

#ifndef IO_BUF__COMMON__H__
#define IO_BUF__COMMON__H__

#include <fcntl.h>

#define LF ((char)10)
#define CR ((char)13)
#define CRLF "\015\012"

struct str;

#define IOBUF_EOF 1

#define IOBUF_ERROR 2

#define IOBUF_TIMEOUT 4

#define IOBUF_BADFLAGS 0xf

#define IOBUF_SEEKABLE 0x10

#define IOBUF_NEEDSCLOSE 0x20

#define IOBUF_NEEDSFREE 0x40

#define IOBUF_NEEDSMUNMAP 0x80
extern unsigned iobuf_bufsize;

struct iobuf
{
  int fd;
  char* buffer;
  unsigned bufsize;
  unsigned buflen;
  unsigned bufstart;
  unsigned offset;
  unsigned timeout;
  unsigned flags;
  int errnum;
};
typedef struct iobuf iobuf;

#define IOBUF_SET_ERROR(io) \
do{ \
  io->flags |= IOBUF_ERROR; \
  io->errnum = errno; \
  return 0; \
}while(0)

int iobuf_init(iobuf* io, int fd, unsigned bufsize, char* buffer,
               unsigned flags);
int iobuf_close(iobuf* io);
#define iobuf_closed(io) ((io)->fd == -1)

#define iobuf_error(io) ((io)->flags & IOBUF_ERROR)

#define iobuf_timedout(io) ((io)->flags & IOBUF_TIMEOUT)

#define iobuf_bad(io) ((io)->flags & IOBUF_BADFLAGS)
int iobuf_timeout(iobuf* io, int poll_out);
#endif