1 /*
2 * librdkafka - The Apache Kafka C/C++ library
3 *
4 * Copyright (c) 2017 Magnus Edenhill
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions are met:
9 *
10 * 1. Redistributions of source code must retain the above copyright notice,
11 * this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright notice,
13 * this list of conditions and the following disclaimer in the documentation
14 * and/or other materials provided with the distribution.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
17 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
20 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
21 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
22 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
23 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
24 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
25 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
26 * POSSIBILITY OF SUCH DAMAGE.
27 */
28
29
30 #ifndef _RDSTRING_H_
31 #define _RDSTRING_H_
32
33 static RD_INLINE RD_UNUSED
rd_strlcpy(char * dst,const char * src,size_t dstsize)34 void rd_strlcpy (char *dst, const char *src, size_t dstsize) {
35 #if HAVE_STRLCPY
36 (void)strlcpy(dst, src, dstsize);
37 #else
38 if (likely(dstsize > 0)) {
39 size_t srclen = strlen(src);
40 size_t copylen = RD_MIN(srclen, dstsize-1);
41 memcpy(dst, src, copylen);
42 dst[copylen] = '\0';
43 }
44 #endif
45 }
46
47
48
49 char *rd_string_render (const char *templ,
50 char *errstr, size_t errstr_size,
51 ssize_t (*callback) (const char *key,
52 char *buf, size_t size,
53 void *opaque),
54 void *opaque);
55
56
57
58 /**
59 * @brief An immutable string tuple (name, value) in a single allocation.
60 * \p value may be NULL.
61 */
62 typedef struct rd_strtup_s {
63 char *value;
64 char name[1]; /* Actual allocation of name + val here */
65 } rd_strtup_t;
66
67 void rd_strtup_destroy (rd_strtup_t *strtup);
68 void rd_strtup_free (void *strtup);
69 rd_strtup_t *rd_strtup_new0 (const char *name, ssize_t name_len,
70 const char *value, ssize_t value_len);
71 rd_strtup_t *rd_strtup_new (const char *name, const char *value);
72 rd_strtup_t *rd_strtup_dup (const rd_strtup_t *strtup);
73 void *rd_strtup_list_copy (const void *elem, void *opaque);
74
75 char *rd_flags2str (char *dst, size_t size,
76 const char **desc, int flags);
77
78 unsigned int rd_string_hash (const char *str, ssize_t len);
79
80 int rd_strcmp (const char *a, const char *b);
81
82 char *_rd_strcasestr (const char *haystack, const char *needle);
83
84 /** @returns "true" if EXPR is true, else "false" */
85 #define RD_STR_ToF(EXPR) ((EXPR) ? "true" : "false")
86
87 #endif /* _RDSTRING_H_ */
88