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