1.1 --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
     1.2 +++ b/src/io/io_buf.h	Sat Feb 20 21:18:28 2010 -0800
     1.3 @@ -0,0 +1,74 @@
     1.4 +/*
     1.5 + * $Id: io_buf.h,v 1.2 2003/09/17 17:44:11 hipnod Exp $
     1.6 + *
     1.7 + * Copyright (C) 2003 giFT project (gift.sourceforge.net)
     1.8 + *
     1.9 + * This program is free software; you can redistribute it and/or modify it
    1.10 + * under the terms of the GNU General Public License as published by the
    1.11 + * Free Software Foundation; either version 2, or (at your option) any
    1.12 + * later version.
    1.13 + *
    1.14 + * This program is distributed in the hope that it will be useful, but
    1.15 + * WITHOUT ANY WARRANTY; without even the implied warranty of
    1.16 + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
    1.17 + * General Public License for more details.
    1.18 + */
    1.19 +
    1.20 +#ifndef GIFT_GT_IO_BUF_H_
    1.21 +#define GIFT_GT_IO_BUF_H_
    1.22 +
    1.23 +/*****************************************************************************/
    1.24 +
    1.25 +/*
    1.26 + * This duplicates libgift's String somewhat...
    1.27 + */
    1.28 +struct io_buf
    1.29 +{
    1.30 +	uint8_t   *data;
    1.31 +	size_t     size;
    1.32 +	size_t     r_offs;
    1.33 +	size_t     w_offs;
    1.34 +};
    1.35 +
    1.36 +/*****************************************************************************/
    1.37 +
    1.38 +/*
    1.39 + * Macros for accessing particular things about an I/O buf...
    1.40 + */
    1.41 +
    1.42 +#define io_buf_read_avail(io_buf) \
    1.43 +	((io_buf)->w_offs - (io_buf)->r_offs)
    1.44 +
    1.45 +#define io_buf_len(io_buf) \
    1.46 +	((io_buf)->w_offs)
    1.47 +
    1.48 +#define io_buf_size(io_buf) \
    1.49 +	((io_buf)->size)
    1.50 +
    1.51 +#define io_buf_write_avail(io_buf) \
    1.52 +	((io_buf)->size - (io_buf)->w_offs)
    1.53 +
    1.54 +#define io_buf_write_ptr(io_buf) \
    1.55 +    (&(io_buf)->data[(io_buf)->w_offs])
    1.56 +
    1.57 +#define io_buf_read_ptr(iobuf) \
    1.58 +	(&(iobuf)->data[(iobuf)->r_offs])
    1.59 +
    1.60 +/*****************************************************************************/
    1.61 +
    1.62 +struct io_buf  *io_buf_new        (size_t len);
    1.63 +void            io_buf_free       (struct io_buf *buf);
    1.64 +uint8_t        *io_buf_free_keep  (struct io_buf *buf);
    1.65 +
    1.66 +BOOL            io_buf_resize     (struct io_buf *buf, size_t len);
    1.67 +void            io_buf_reset      (struct io_buf *buf);
    1.68 +
    1.69 +void            io_buf_push       (struct io_buf *buf, size_t len);
    1.70 +void            io_buf_pop        (struct io_buf *buf, size_t len);
    1.71 +
    1.72 +size_t          io_buf_copy       (struct io_buf *dst, struct io_buf *src,
    1.73 +                                   size_t len);
    1.74 +
    1.75 +/*****************************************************************************/
    1.76 +
    1.77 +#endif /* GIFT_GT_IO_BUF_H_ */