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/*
* cbuf.c
* Simple char buffer implementation.
*
* Copyright (c) 2021 Nikias Bassen, All Rights Reserved.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include <stdlib.h>
#include <string.h>
#include <stdio.h>
#include "common.h"
#include "libimobiledevice-glue/cbuf.h"
struct char_buf* char_buf_new()
{
struct char_buf* cbuf = (struct char_buf*)malloc(sizeof(struct char_buf));
cbuf->capacity = 256;
cbuf->length = 0;
cbuf->data = (unsigned char*)malloc(cbuf->capacity);
return cbuf;
}
void char_buf_free(struct char_buf* cbuf)
{
if (cbuf) {
free(cbuf->data);
free(cbuf);
}
}
void char_buf_append(struct char_buf* cbuf, unsigned int length, unsigned char* data)
{
if (!cbuf || !cbuf->data) {
return;
}
if (cbuf->length + length > cbuf->capacity) {
unsigned int newcapacity = cbuf->capacity + ((length / 256) + 1) * 256;
unsigned char* newdata = realloc(cbuf->data, newcapacity);
if (!newdata) {
fprintf(stderr, "%s: ERROR: Failed to realloc\n", __func__);
return;
}
cbuf->data = newdata;
cbuf->capacity = newcapacity;
}
memcpy(cbuf->data + cbuf->length, data, length);
cbuf->length += length;
}
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