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/* See LICENSE file for copyright and license details. */
/**
* Stack allocation version of strndup(3)
*
* @param s:const char * The string to copy
* @param n:size_t The maximum number of bytes to copy
* @return :char * Duplicate of `s` with automatic storage
*/
#if defined(__GNUC__) || defined(__clang__)
# define libsimple_strndupa(s, n)\
({\
const char *__s = (s);\
size_t __n = strnlen(__s, n);\
char *__r;\
__r = alloca(__n + 1);\
memcpy(__r, __s, __n);\
__r[__n] = '\0';\
__r;\
})
# ifndef strndupa
# define strndupa(s, n) libsimple_strndupa(s, n)
# endif
#endif
/**
* Version of strndup(3) that calls `libsimple_enprintf` on error
*
* @param status Exit value in case of failure
* @param s The string to copy
* @param n The maximum number of bytes to copy
* @return Duplicate of `s`
*/
_LIBSIMPLE_GCC_ONLY(__attribute__((__malloc__, __assume_aligned__(1), __nonnull__, __warn_unused_result__, __returns_nonnull__)))
char *libsimple_enstrndup(int, const char *, size_t);
#ifndef enstrndup
# define enstrndup libsimple_enstrndup
#endif
/**
* Version of strndup(3) that calls `libsimple_eprintf` on error
*
* @param s The string to copy
* @param n The maximum number of bytes to copy
* @return Duplicate of `s`
*/
_LIBSIMPLE_GCC_ONLY(__attribute__((__malloc__, __assume_aligned__(1), __nonnull__, __warn_unused_result__, __returns_nonnull__)))
static inline char *libsimple_estrndup(const char *__s, size_t __n)
{ return libsimple_enstrndup(libsimple_default_failure_exit, __s, __n); }
#ifndef estrndup
# define estrndup libsimple_estrndup
#endif
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