/crypto/heimdal/lib/roken/strpool.c
https://bitbucket.org/freebsd/freebsd-head/ · C · 110 lines · 59 code · 10 blank · 41 comment · 11 complexity · 14075db444d2fd8c4fd3644c342e7966 MD5 · raw file
- /*
- * Copyright (c) 2005 Kungliga Tekniska Hรถgskolan
- * (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;
- };
- /*
- *
- */
- ROKEN_LIB_FUNCTION void ROKEN_LIB_CALL
- rk_strpoolfree(struct rk_strpool *p)
- {
- if (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, *str2;
- int len;
- if (p == NULL) {
- p = malloc(sizeof(*p));
- if (p == NULL)
- return NULL;
- p->str = NULL;
- p->len = 0;
- }
- va_start(ap, fmt);
- len = vasprintf(&str, fmt, ap);
- va_end(ap);
- if (str == NULL) {
- rk_strpoolfree(p);
- return NULL;
- }
- str2 = realloc(p->str, len + p->len + 1);
- if (str2 == NULL) {
- rk_strpoolfree(p);
- return NULL;
- }
- p->str = str2;
- 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;
- }