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yajl_buf.h
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yajl_buf.h
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/*
* Copyright 2010, Lloyd Hilaiel.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* 2. 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.
*
* 3. Neither the name of Lloyd Hilaiel nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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.
*/
#ifndef __YAJL_BUF_H__
#define __YAJL_BUF_H__
#include "api/yajl_common.h"
#include "yajl_alloc.h"
/*
* Implementation/performance notes. If this were moved to a header
* only implementation using #define's where possible we might be
* able to sqeeze a little performance out of the guy by killing function
* call overhead. YMMV.
*/
/**
* yajl_buf is a buffer with exponential growth. the buffer ensures that
* you are always null padded.
*/
typedef struct yajl_buf_t * yajl_buf;
/* allocate a new buffer */
yajl_buf yajl_buf_alloc(yajl_alloc_funcs * alloc);
/* free the buffer */
void yajl_buf_free(yajl_buf buf);
/* append a number of bytes to the buffer */
void yajl_buf_append(yajl_buf buf, const void * data, unsigned int len);
/* empty the buffer */
void yajl_buf_clear(yajl_buf buf);
/* get a pointer to the beginning of the buffer */
const unsigned char * yajl_buf_data(yajl_buf buf);
/* get the length of the buffer */
unsigned int yajl_buf_len(yajl_buf buf);
/* truncate the buffer */
void yajl_buf_truncate(yajl_buf buf, unsigned int len);
#endif