buffer.h File Reference

#include <rz_types.h>

Go to the source code of this file.

Classes
struct	buffer

Macros
#define	BUFFER_INIT(op, fd, buf, len)    { (buf), 0, (len), (fd), (op) }
#define	BUFFER_INSIZE   8192
#define	BUFFER_OUTSIZE   8192
#define	buffer_PUTC(s, c)
#define	buffer_PEEK(s)   ((s)->x + (s)->n)
#define	buffer_SEEK(s, len)   (((s)->p -= (len)), ((s)->n += (len)))
#define	buffer_GETC(s, c)

Typedefs
typedef int(*	BufferOp) (int, const char *, int)
typedef struct buffer	buffer

Functions
void	buffer_init (buffer *, BufferOp, int, char *, unsigned int)
int	buffer_flush (buffer *)
int	buffer_put (buffer *, const char *, unsigned int)
int	buffer_putalign (buffer *, const char *, unsigned int)
int	buffer_putflush (buffer *, const char *, unsigned int)
int	buffer_get (buffer *, char *, unsigned int)
int	buffer_bget (buffer *, char *, unsigned int)
int	buffer_feed (buffer *)
char *	buffer_peek (buffer *)
void	buffer_seek (buffer *, unsigned int)
int	buffer_copy (buffer *, buffer *)

Variables
buffer *	buffer_0
buffer *	buffer_0small
buffer *	buffer_1
buffer *	buffer_1small
buffer *	buffer_2

Macro Definition Documentation

buffer_GETC

#define buffer_GETC	(		s,
			c
	)

Value:

    (((s)->p > 0) \
            ? (*(c) = (s)->x[(s)->n], buffer_SEEK((s), 1), 1) \
            : buffer_get((s), (c), 1))

Definition at line 50 of file buffer.h.

BUFFER_INIT

#define BUFFER_INIT	(		op,
			fd,
			buf,
			len
	)		{ (buf), 0, (len), (fd), (op) }

Definition at line 23 of file buffer.h.

BUFFER_INSIZE

#define BUFFER_INSIZE   8192

Definition at line 25 of file buffer.h.

BUFFER_OUTSIZE

#define BUFFER_OUTSIZE   8192

Definition at line 26 of file buffer.h.

buffer_PEEK

#define buffer_PEEK

(

s

)

((s)->x + (s)->n)

Definition at line 47 of file buffer.h.

buffer_PUTC

#define buffer_PUTC	(		s,
			c
	)

Value:

    (((s)->n != (s)->p) \
            ? ((s)->x[(s)->p++] = (c), 0) \
            : buffer_put((s), &(c), 1))

Definition at line 35 of file buffer.h.

buffer_SEEK

#define buffer_SEEK	(		s,
			len
	)		(((s)->p -= (len)), ((s)->n += (len)))

Definition at line 48 of file buffer.h.

Typedef Documentation

buffer

typedef struct buffer buffer

BufferOp

typedef int(* BufferOp) (int, const char *, int)

Definition at line 13 of file buffer.h.

Function Documentation

buffer_bget()

int buffer_bget	(	buffer *	,
		char *	,
		unsigned int
	)

buffer_copy()

int buffer_copy	(	buffer *	,
		buffer *
	)

buffer_feed()

int buffer_feed

(

buffer *

)

buffer_flush()

int buffer_flush

(

buffer *

s

)

Definition at line 27 of file buffer.c.

                            {
    int p = s->p;
    if (!p) {
        return 1;
    }
    s->p = 0;
    return allwrite(s->op, s->fd, s->x, p);
}

References allwrite(), rz_socket_t::fd, p, and s.

Referenced by buffer_putalign(), buffer_putflush(), and cdb_make_finish().

buffer_get()

int buffer_get	(	buffer *	,
		char *	,
		unsigned int
	)

buffer_init()

void buffer_init	(	buffer *	s,
		BufferOp	op,
		int	fd,
		char *	buf,
		unsigned int	len
	)

Definition at line 6 of file buffer.c.

                                                                      {
    s->x = buf;
    s->fd = fd;
    s->op = op;
    s->p = 0;
    s->n = len;
}

References fd, rz_socket_t::fd, len, op, and s.

Referenced by cdb_make_start().

buffer_peek()

char* buffer_peek

(

buffer *

)

buffer_put()

int buffer_put	(	buffer *	,
		const char *	,
		unsigned int
	)

buffer_putalign()

int buffer_putalign	(	buffer *	s,
		const char *	buf,
		unsigned int	len
	)

Definition at line 36 of file buffer.c.

                                                          {
    ut32 n;
    if (!s || !s->x || !buf) {
        return 0;
    }
    while (len > (n = s->n - s->p)) {
        memcpy(s->x + s->p, buf, n);
        s->p += n;
        buf += n;
        len -= n;
        if (!buffer_flush(s)) {
            return 0;
        }
    }
    /* now len <= s->n - s->p */
    memcpy(s->x + s->p, buf, len);
    s->p += len;
    return 1;
}

References buffer_flush(), len, memcpy(), n, and s.

Referenced by cdb_make_add(), cdb_make_addbegin(), and cdb_make_finish().

buffer_putflush()

int buffer_putflush	(	buffer *	s,
		const char *	buf,
		unsigned int	len
	)

Definition at line 56 of file buffer.c.

                                                          {
    if (!buffer_flush(s)) {
        return 0;
    }
    return allwrite(s->op, s->fd, buf, len);
}

References allwrite(), buffer_flush(), rz_socket_t::fd, len, and s.

Referenced by cdb_make_finish().

buffer_seek()

void buffer_seek	(	buffer *	,
		unsigned int
	)

Variable Documentation

buffer_0

buffer* buffer_0

extern

buffer_0small

buffer* buffer_0small

extern

buffer_1

buffer* buffer_1

extern

buffer_1small

buffer* buffer_1small

extern

buffer_2

buffer* buffer_2

extern