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#ifndef _GNU_SOURCE
# define _GNU_SOURCE
#endif
#include <type_traits>
#include <string.h>
/* This is a bit of a weird detail of the GNU implementation and C's lack of
* overloading and strictness: GNU takes const char * and returns a char * so
* that it autocasts to your desired constness, this function never actually
* modifies the string.
*/
char *__mlibc_gnu_basename_c(const char *path) {
char *basename_component = strrchr(path, '/');
if (!basename_component) {
return const_cast<char *>(path);
}
return basename_component + 1;
}
/* GNU exposes these overloads, and as a result, we should probably have them
* checked, to make sure we actually match expectations.
*/
static_assert(
std::is_same_v<decltype(basename((const char *)nullptr)), const char*>,
"C++ overloads broken"
);
static_assert(
std::is_same_v<decltype(basename((char *)nullptr)), char*>,
"C++ overloads broken"
);
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