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/***************************************************************************
* Copyright (C) 2008 by Alexander Block *
* ablock@blocksoftware.net *
* *
* This program is free software; you can redistribute it and/or modify *
* it under the terms of the GNU General Public License as published by *
* the Free Software Foundation; either version 2 of the License, or *
* (at your option) any later version. *
* *
* This program 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 General Public License for more details. *
* *
* You should have received a copy of the GNU General Public License *
* along with this program; if not, write to the *
* Free Software Foundation, Inc., *
* 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
***************************************************************************/
#include "config.h"
#include "buf.h"
#include <stdlib.h>
#include <string.h>
#include <stdbool.h>
#include <assert.h>
int hexec_buf_create(struct hexec_buf* buf)
{
buf->owner = true;
buf->buf = malloc(1024);
buf->max_size = 1024;
buf->buf_size = 0;
return 0;
}
int hexec_buf_create_from(struct hexec_buf* buf, void* from, int size, bool own)
{
buf->owner = own;
buf->buf = (char*)from;
buf->buf_size = size;
buf->max_size = size;
return 0;
}
int hexec_buf_destroy(struct hexec_buf* buf)
{
if(buf->owner)
free(buf->buf);
return 0;
}
int hexec_buf_alloc(struct hexec_buf* buf, int size)
{
assert(buf->owner);
bool do_realloc = false;
while(buf->buf_size + size > buf->max_size)
{
buf->max_size += 1024;
do_realloc = true;
}
if(do_realloc)
buf->buf = realloc(buf->buf, buf->max_size);
int ptr = buf->buf_size;
buf->buf_size += size;
return ptr;
}
int hexec_buf_copy_to(struct hexec_buf* buf, void* to, int size)
{
if(buf->buf_size < size)
size = buf->buf_size;
memcpy(to, buf->buf, size);
return size;
}
int hexec_buf_strdup(struct hexec_buf* buf, const char* str)
{
int ptr = hexec_buf_alloc(buf, strlen(str) + 1);
strcpy(buf->buf + ptr, str);
return ptr;
}
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