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/*
* ngtcp2
*
* Copyright (c) 2017 ngtcp2 contributors
*
* Permission is hereby granted, free of charge, to any person obtaining
* a copy of this software and associated documentation files (the
* "Software"), to deal in the Software without restriction, including
* without limitation the rights to use, copy, modify, merge, publish,
* distribute, sublicense, and/or sell copies of the Software, and to
* permit persons to whom the Software is furnished to do so, subject to
* the following conditions:
*
* The above copyright notice and this permission notice shall be
* included in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
* LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
* OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
#include "ngtcp2_buf.h"
#include "ngtcp2_mem.h"
void ngtcp2_buf_init(ngtcp2_buf *buf, uint8_t *begin, size_t len) {
buf->begin = buf->pos = buf->last = begin;
buf->end = begin + len;
}
void ngtcp2_buf_reset(ngtcp2_buf *buf) { buf->pos = buf->last = buf->begin; }
size_t ngtcp2_buf_cap(const ngtcp2_buf *buf) {
return (size_t)(buf->end - buf->begin);
}
int ngtcp2_buf_chain_new(ngtcp2_buf_chain **pbufchain, size_t len,
const ngtcp2_mem *mem) {
*pbufchain = ngtcp2_mem_malloc(mem, sizeof(ngtcp2_buf_chain) + len);
if (*pbufchain == NULL) {
return NGTCP2_ERR_NOMEM;
}
(*pbufchain)->next = NULL;
ngtcp2_buf_init(&(*pbufchain)->buf,
(uint8_t *)(*pbufchain) + sizeof(ngtcp2_buf_chain), len);
return 0;
}
void ngtcp2_buf_chain_del(ngtcp2_buf_chain *bufchain, const ngtcp2_mem *mem) {
ngtcp2_mem_free(mem, bufchain);
}
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