blob: 92b96215ea193da81821b54c22df3b94dc0d7f83 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
|
/*
* Copyright (C) 2010 Tobias Klauser <tklauser@distanz.ch>
*
* This file is part of nios2sim-ng.
*
* This file is subject to the terms and conditions of the GNU General Public
* License. See the file "COPYING" in the main directory of this archive
* for more details.
*/
#ifndef _UTIL_H_
#define _UTIL_H_
#include <string.h>
/*
* Memory allocation
*/
extern void *zalloc(const size_t size);
/*
* String handling and manipulation
*/
/**
* Check whether two strings match exactly.
*
* @param ctx the reference string (usually a defined constant or string under
* the programs control)
* @param arg the string to match against the reference string (usually the
* user-supplied string)
* @return true if the strings match
*/
static inline bool xstrmatch(const char *ctx, const char *arg)
{
size_t len = strlen(ctx);
return (strlen(arg) == len && strncmp(arg, ctx, len) == 0);
}
/**
* Check whether a string is empty (either NULL or empty string).
*
* @param str string to check for emptiness
* @return true if the string is empty
*/
static inline bool xstrisempty(const char *str)
{
return ((str == NULL) || (xstrmatch("", str)));
}
/*
* Stringification macro (taken from Linux Kernel source code)
*/
/* Indirect stringification. Doing two levels allows the parameter to be a
* macro itself. For example, compile with -DFOO=bar, __stringify(FOO)
* converts to "bar".
*/
#define __stringify_1(x...) #x
#define __stringify(x...) __stringify_1(x)
#endif /* _UTIL_H_ */
|
