#include <stdbool.h>
#include <stdio.h>
#include <string.h>
-#include <strings.h>
#include "darray.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))
+#define STATIC_ASSERT(expr, message) do { \
+ switch (0) { case 0: case (expr): ; } \
+} while (0)
+
+char
+to_lower(char c);
+
+int
+istrcmp(const char *a, const char *b);
+
+int
+istrncmp(const char *a, const char *b, size_t n);
static inline bool
streq(const char *s1, const char *s2)
static inline bool
istreq(const char *s1, const char *s2)
{
- return strcasecmp(s1, s2) == 0;
+ return istrcmp(s1, s2) == 0;
}
static inline bool
istreq_prefix(const char *s1, const char *s2)
{
- return strncasecmp(s1, s2, strlen(s1)) == 0;
+ return istrncmp(s1, s2, strlen(s1)) == 0;
}
static inline char *
static inline void *
memdup(const void *mem, size_t nmemb, size_t size)
{
- void *p = malloc(nmemb * size);
+ void *p = calloc(nmemb, size);
if (p)
memcpy(p, mem, nmemb * size);
return p;
}
-static inline int
-min(int misc, int other)
-{
- return (misc < other) ? misc : other;
-}
-
-static inline int
-max(int misc, int other)
+#if !(defined(HAVE_STRNDUP) && HAVE_STRNDUP)
+static inline char *
+strndup(const char *s, size_t n)
{
- return (misc > other) ? misc : other;
+ size_t slen = strlen(s);
+ size_t len = MIN(slen, n);
+ char *p = malloc(len + 1);
+ if (!p)
+ return NULL;
+ memcpy(p, s, len);
+ p[len] = '\0';
+ return p;
}
+#endif
/* ctype.h is locale-dependent and has other oddities. */
static inline bool
* Note: this is 1-based! It's more useful this way, and returns 0 when
* mask is all 0s.
*/
-static inline int
+static inline unsigned
msb_pos(uint32_t mask)
{
- int pos = 0;
+ unsigned pos = 0;
while (mask) {
pos++;
- mask >>= 1;
+ mask >>= 1u;
}
return pos;
}
+static inline int
+one_bit_set(uint32_t x)
+{
+ return x && (x & (x - 1)) == 0;
+}
+
bool
-map_file(FILE *file, const char **string_out, size_t *size_out);
+map_file(FILE *file, char **string_out, size_t *size_out);
void
-unmap_file(const char *str, size_t size);
+unmap_file(char *string, size_t size);
#define ARRAY_SIZE(arr) ((sizeof(arr) / sizeof(*(arr))))
#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))
+
+/* Round up @a so it's divisible by @b. */
+#define ROUNDUP(a, b) (((a) + (b) - 1) / (b) * (b))
#if defined(HAVE_SECURE_GETENV)
# define secure_getenv secure_getenv
#define ATTR_PACKED
#endif
+#if !(defined(HAVE_ASPRINTF) && HAVE_ASPRINTF)
+int asprintf(char **strp, const char *fmt, ...) ATTR_PRINTF(2, 3);
+# if !(defined(HAVE_VASPRINTF) && HAVE_VASPRINTF)
+# include <stdarg.h>
+int vasprintf(char **strp, const char *fmt, va_list ap);
+# endif /* !HAVE_VASPRINTF */
+#endif /* !HAVE_ASPRINTF */
+
#endif /* UTILS_H */