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/*
* Copyright (c) 2004, Nate Nielsen
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* * Redistributions of source code must retain the above
* copyright notice, this list of conditions and the
* following disclaimer.
* * Redistributions in binary form must reproduce the
* above copyright notice, this list of conditions and
* the following disclaimer in the documentation and/or
* other materials provided with the distribution.
* * The names of contributors to this software may not be
* used to endorse or promote products derived from this
* software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
* THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
* DAMAGE.
*
*
* CONTRIBUTORS
* Nate Nielsen <nielsen@memberwebs.com>
*
*/
#ifndef _BUFFER_H_
#define _BUFFER_H_
/* -----------------------------------------------------------------------
* Memory Buffers
*/
struct ha_buffer_internal;
/* A buffer which owns memory */
typedef struct ha_buffer
{
struct ha_buffer_internal* _ft;
struct ha_buffer_internal* _dt;
char* _pp;
char* _rp;
}
ha_buffer_t;
/* Initializes a buffer */
void ha_bufinit(ha_buffer_t* buf);
/* Frees all memory associated with a buffer */
void ha_buffree(ha_buffer_t* buf);
/* Resets a buffer for later reuse */
void ha_bufreset(ha_buffer_t* buf);
#define ha_buflen(buf) \
((buf)->_rp - (buf)->_pp)
#define ha_bufchar(buf) \
((!ha_buferr(buf) && ha_buflen(buf) > 0) ? *((buf)->_pp) : '\0' )
#define ha_bufdata(buf) \
((buf)->_pp)
#define ha_buferr(buf) \
((buf)->_dt == NULL)
/* Buffer input functions ------------------------------------------------ */
/* Read a line from an input handle */
int ha_bufreadline(int fd, ha_buffer_t* buf);
/* Parse the current line */
char* ha_bufparseline(ha_buffer_t* buf, int trim);
/* Parse a word from the current block */
char* ha_bufparseword(ha_buffer_t* buf, const char* delims);
#define ha_bufskip(buf) \
((buf)->_pp = (buf)->_rp)
#define ha_bufeat(buf) \
((!ha_buferr(buf) && ha_buflen(buf) > 0) ? ++((buf)->_pp) : (buf)->_pp)
/* Buffer output functions ----------------------------------------------- */
/* Adds multiple strings together */
char* ha_bufmcat(ha_buffer_t* buf, ...);
/* Copies a string to the buffer */
char* ha_bufcpy(ha_buffer_t* buf, const char* src);
/* Copies a portion of a string to the buffer */
char* ha_bufncpy(ha_buffer_t* buf, const char* src, size_t len);
/* Opens up the end of the current block so it can be joined by more data */
#define ha_bufjoin(buf) \
((buf)->_rp && ((buf)->_rp != (buf)->_pp) ? (buf)->_rp-- : (buf)->_rp)
#define ha_bufcat ha_bufcpy
/* Buffer allocation functions ------------------------------------------- */
/* Memory allocation */
void* ha_bufmalloc(ha_buffer_t* buf, size_t bytes);
void* ha_bufmemdup(ha_buffer_t* buf, const void* src, size_t bytes);
/* Buffer Encoding Functions --------------------------------------------- */
/* Encode an array of bytes in base 64 */
char* ha_bufenc64(ha_buffer_t* buf, const void* src, size_t bytes);
/* Decode an array of bytes from base 64 */
void* ha_bufdec64(ha_buffer_t* buf, const char* src, size_t* bytes);
/* Encode an array of bytes in hex */
char* ha_bufenchex(ha_buffer_t* buf, const void* src, size_t bytes);
/* Decode an array of bytes in hex */
void* ha_bufdechex(ha_buffer_t* buf, const char* src, size_t* bytes);
#endif /* _BUFFER_H_ */
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