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// SPDX-License-Identifier: GPL-2.0
#ifndef SUBSURFACE_STRING_H
#define SUBSURFACE_STRING_H
#include <stdbool.h>
#include <string.h>
#include <time.h>
// shared generic definitions and macros
// mostly about strings, but a couple of math macros are here as well
/* Windows has no MIN/MAX macros - so let's just roll our own */
#define MIN(x, y) ({ \
__typeof__(x) _min1 = (x); \
__typeof__(y) _min2 = (y); \
(void) (&_min1 == &_min2); \
_min1 < _min2 ? _min1 : _min2; })
#define MAX(x, y) ({ \
__typeof__(x) _max1 = (x); \
__typeof__(y) _max2 = (y); \
(void) (&_max1 == &_max2); \
_max1 > _max2 ? _max1 : _max2; })
#define IS_FP_SAME(_a, _b) (fabs((_a) - (_b)) <= 0.000001 * MAX(fabs(_a), fabs(_b)))
// string handling
#ifdef __cplusplus
extern "C" {
#endif
static inline bool same_string(const char *a, const char *b)
{
return !strcmp(a ?: "", b ?: "");
}
static inline bool same_string_caseinsensitive(const char *a, const char *b)
{
return !strcasecmp(a ?: "", b ?: "");
}
static inline bool empty_string(const char *s)
{
return !s || !*s;
}
static inline bool includes_string_caseinsensitive(const char *haystack, const char *needle)
{
if (!needle)
return 1; /* every string includes the NULL string */
if (!haystack)
return 0; /* nothing is included in the NULL string */
int len = strlen(needle);
while (*haystack) {
if (strncasecmp(haystack, needle, len))
return 1;
haystack++;
}
return 0;
}
static inline char *copy_string(const char *s)
{
return (s && *s) ? strdup(s) : NULL;
}
#define STRTOD_NO_SIGN 0x01
#define STRTOD_NO_DOT 0x02
#define STRTOD_NO_COMMA 0x04
#define STRTOD_NO_EXPONENT 0x08
extern double strtod_flags(const char *str, const char **ptr, unsigned int flags);
#define STRTOD_ASCII (STRTOD_NO_COMMA)
#define ascii_strtod(str, ptr) strtod_flags(str, ptr, STRTOD_ASCII)
#ifdef __cplusplus
}
#endif
#endif // SUBSURFACE_STRING_H
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