1/*
2 * Copyright (c) 2011-12 Apple Inc. All Rights Reserved.
3 *
4 * @APPLE_LICENSE_HEADER_START@
5 *
6 * This file contains Original Code and/or Modifications of Original Code
7 * as defined in and that are subject to the Apple Public Source License
8 * Version 2.0 (the 'License'). You may not use this file except in
9 * compliance with the License. Please obtain a copy of the License at
10 * http://www.opensource.apple.com/apsl/ and read it before using this
11 * file.
12 *
13 * The Original Code and all software distributed under the License are
14 * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
15 * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
16 * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
17 * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
18 * Please see the License for the specific language governing rights and
19 * limitations under the License.
20 *
21 * @APPLE_LICENSE_HEADER_END@
22 */
23/*
24 * Copyright (c) 2005 Kungliga Tekniska Högskolan
25 * (Royal Institute of Technology, Stockholm, Sweden).
26 * All rights reserved.
27 *
28 * Redistribution and use in source and binary forms, with or without
29 * modification, are permitted provided that the following conditions
30 * are met:
31 *
32 * 1. Redistributions of source code must retain the above copyright
33 *    notice, this list of conditions and the following disclaimer.
34 *
35 * 2. Redistributions in binary form must reproduce the above copyright
36 *    notice, this list of conditions and the following disclaimer in the
37 *    documentation and/or other materials provided with the distribution.
38 *
39 * 3. Neither the name of the Institute nor the names of its contributors
40 *    may be used to endorse or promote products derived from this software
41 *    without specific prior written permission.
42 *
43 * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
44 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
45 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
46 * ARE DISCLAIMED.  IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
47 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
48 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
49 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
50 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
51 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
52 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
53 * SUCH DAMAGE.
54 */
55
56#include "ossl-config.h"
57
58#include <stdarg.h>
59#include <stdio.h>
60#include <stdlib.h>
61#include <string.h>
62
63struct strpool {
64    char *str;
65    size_t len;
66};
67
68#ifndef ROKEN_LIB_FUNCTION
69#define	ROKEN_LIB_FUNCTION
70#endif
71#ifndef	ROKEN_LIB_CALL
72#define	ROKEN_LIB_CALL
73#endif
74
75/*
76 *
77 */
78
79ROKEN_LIB_FUNCTION void ROKEN_LIB_CALL
80strpoolfree(struct strpool *p)
81{
82    if (p->str) {
83	free(p->str);
84	p->str = NULL;
85    }
86    free(p);
87}
88
89/*
90 *
91 */
92
93ROKEN_LIB_FUNCTION struct strpool * ROKEN_LIB_CALL
94strpoolprintf(struct strpool *p, const char *fmt, ...)
95{
96    va_list ap;
97    char *str, *str2;
98    int len;
99
100    if (p == NULL) {
101	p = malloc(sizeof(*p));
102	if (p == NULL)
103	    return NULL;
104	p->str = NULL;
105	p->len = 0;
106    }
107    va_start(ap, fmt);
108    len = vasprintf(&str, fmt, ap);
109    va_end(ap);
110    if (str == NULL) {
111	strpoolfree(p);
112	return NULL;
113    }
114    str2 = realloc(p->str, len + p->len + 1);
115    if (str2 == NULL) {
116	strpoolfree(p);
117	return NULL;
118    }
119    p->str = str2;
120    memcpy(p->str + p->len, str, len + 1);
121    p->len += len;
122    free(str);
123    return p;
124}
125
126/*
127 *
128 */
129
130ROKEN_LIB_FUNCTION char * ROKEN_LIB_CALL
131strpoolcollect(struct strpool *p)
132{
133    char *str;
134    if (p == NULL)
135	return strdup("");
136    str = p->str;
137    p->str = NULL;
138    free(p);
139    return str;
140}
141