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/* ----------------------------------------------------------------------------
libconfig - A library for processing structured configuration files
Copyright (C) 2005-2020 Mark A Lindner
This file is part of libconfig.
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 Library General Public
License along with this library; if not, see
<http://www.gnu.org/licenses/>.
----------------------------------------------------------------------------
*/
#include "strbuf.h"
#include "util.h"
#include <string.h>
#include <stdlib.h>
#define STRING_BLOCK_SIZE 64
/* ------------------------------------------------------------------------- */
void libconfig_strbuf_ensure_capacity(strbuf_t *buf, size_t len)
{
static const size_t mask = ~(STRING_BLOCK_SIZE - 1);
size_t newlen = buf->length + len + 1; /* add 1 for NUL */
if(newlen > buf->capacity)
{
buf->capacity = (newlen + (STRING_BLOCK_SIZE - 1)) & mask;
buf->string = (char *)realloc(buf->string, buf->capacity);
}
}
/* ------------------------------------------------------------------------- */
char *libconfig_strbuf_release(strbuf_t *buf)
{
char *r = buf->string;
__zero(buf);
return(r);
}
/* ------------------------------------------------------------------------- */
void libconfig_strbuf_append_string(strbuf_t *buf, const char *s)
{
size_t len = strlen(s);
libconfig_strbuf_ensure_capacity(buf, len);
strcpy(buf->string + buf->length, s);
buf->length += len;
}
/* ------------------------------------------------------------------------- */
void libconfig_strbuf_append_char(strbuf_t *buf, char c)
{
libconfig_strbuf_ensure_capacity(buf, 1);
*(buf->string + buf->length) = c;
++(buf->length);
*(buf->string + buf->length) = '\0';
}
/* ------------------------------------------------------------------------- */
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