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/*
* Copyright © 2012 Ran Benita <ran234@gmail.com>
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice (including the next
* paragraph) shall be included in all copies or substantial portions of the
* Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
* DEALINGS IN THE SOFTWARE.
*/
#ifndef UTILS_H
#define UTILS_H 1
#include <stdbool.h>
#include <string.h>
/*
* We sometimes malloc strings and then expose them as const char*'s. This
* macro is used when we free these strings in order to avoid -Wcast-qual
* errors.
*/
#define UNCONSTIFY(const_ptr) ((void *) (uintptr_t) (const_ptr))
static inline bool
streq(const char *s1, const char *s2)
{
return strcmp(s1, s2) == 0;
}
static inline bool
streq_not_null(const char *s1, const char *s2)
{
if (!s1 || !s2)
return false;
return streq(s1, s2);
}
static inline bool
istreq(const char *s1, const char *s2)
{
return strcasecmp(s1, s2) == 0;
}
static inline bool
istreq_prefix(const char *s1, const char *s2)
{
return strncasecmp(s1, s2, strlen(s1)) == 0;
}
static inline char *
strdup_safe(const char *s)
{
return s ? strdup(s) : NULL;
}
static inline bool
isempty(const char *s)
{
return s == NULL || s[0] == '\0';
}
static inline const char *
strnull(const char *s)
{
return s ? s : "(null)";
}
#define MIN(a, b) ((a) < (b) ? (a) : (b))
#define MIN3(a, b, c) MIN(MIN((a), (b)), (c))
#define MAX(a, b) ((a) > (b) ? (a) : (b))
#define MAX3(a, b, c) MAX(MAX((a), (b)), (c))
/* Compiler Attributes */
#if defined(__GNUC__) && (__GNUC__ >= 4) && !defined(__CYGWIN__)
# define XKB_EXPORT __attribute__((visibility("default")))
#elif defined(__SUNPRO_C) && (__SUNPRO_C >= 0x550)
# define XKB_EXPORT __global
#else /* not gcc >= 4 and not Sun Studio >= 8 */
# define XKB_EXPORT
#endif
#if defined(__GNUC__) && ((__GNUC__ * 100 + __GNUC_MINOR__) >= 203)
# define ATTR_PRINTF(x,y) __attribute__((__format__(__printf__, x, y)))
#else /* not gcc >= 2.3 */
# define ATTR_PRINTF(x,y)
#endif
#if (defined(__GNUC__) && ((__GNUC__ * 100 + __GNUC_MINOR__) >= 205)) \
|| (defined(__SUNPRO_C) && (__SUNPRO_C >= 0x590))
# define ATTR_NORETURN __attribute__((__noreturn__))
#else
# define ATTR_NORETURN
#endif /* GNUC */
#if (defined(__GNUC__) && (__GNUC__ * 100 + __GNUC_MINOR__) >= 296)
#define ATTR_MALLOC __attribute__((__malloc__))
#else
#define ATTR_MALLOC
#endif
#if defined(__GNUC__) && (__GNUC__ >= 4)
# define ATTR_NULL_SENTINEL __attribute__((__sentinel__))
#else
# define ATTR_NULL_SENTINEL
#endif /* GNUC >= 4 */
#endif /* UTILS_H */
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