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/*
* Copyright (c) 2005 Kungliga Tekniska Högskolan
* (Royal Institute of Technology, Stockholm, Sweden).
* All rights reserved.
*
* 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 the Institute 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 INSTITUTE AND CONTRIBUTORS ``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 INSTITUTE OR CONTRIBUTORS 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.
*/
#include <config.h>
#include <stdarg.h>
#include <stdlib.h>
#include "roken.h"
struct rk_strpool {
char *str;
size_t len; /* strlen() of str */
size_t sz; /* Allocated size */
};
/*
*
*/
ROKEN_LIB_FUNCTION void ROKEN_LIB_CALL
rk_strpoolfree(struct rk_strpool *p)
{
if (p && p->str) {
free(p->str);
p->str = NULL;
}
free(p);
}
/*
*
*/
ROKEN_LIB_FUNCTION struct rk_strpool * ROKEN_LIB_CALL
rk_strpoolprintf(struct rk_strpool *p, const char *fmt, ...)
{
va_list ap;
char *str;
int len;
va_start(ap, fmt);
len = vasprintf(&str, fmt, ap);
va_end(ap);
if (str == NULL)
return rk_strpoolfree(p), NULL;
if (p == NULL) {
if ((p = malloc(sizeof(*p))) == NULL)
return free(str), NULL;
p->str = str;
p->len = p->sz = len;
return p;
} /* else grow the buffer and append `str', but don't grow too fast */
if (len + p->len + 1 > p->sz) {
size_t sz = p->len + len + 9 + (p->sz >> 2);
char *str2;
if ((str2 = realloc(p->str, sz)) == NULL)
return rk_strpoolfree(p), NULL;
p->str = str2;
p->sz = sz;
}
memcpy(p->str + p->len, str, len + 1);
p->len += len;
free(str);
return p;
}
/*
*
*/
ROKEN_LIB_FUNCTION char * ROKEN_LIB_CALL
rk_strpoolcollect(struct rk_strpool *p)
{
char *str;
if (p == NULL)
return strdup("");
str = p->str;
p->str = NULL;
free(p);
return str;
}
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