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https://github.com/bolero-MURAKAMI/Sprout.git
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23 lines
632 B
C++
23 lines
632 B
C++
#ifndef SPROUT_CSTRING_STRSTR_HPP
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#define SPROUT_CSTRING_STRSTR_HPP
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#include <sprout/config.hpp>
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namespace sprout {
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// Copyright (C) 2011 RiSK (sscrisk)
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// 7.21.5.7 strstr ŠÖ<C5A0>”
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inline SPROUT_CONSTEXPR char const* strstr(char const* s1, char const* s2) {
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return !*s2 ? s1
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: !*s1 ? nullptr
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: *s1 == *s2 && sprout::strstr(s1 + 1, s2 + 1) ? s1
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: sprout::strstr(s1 + 1, s2)
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;
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}
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inline SPROUT_CONSTEXPR char* strstr(char* s1, char const* s2) {
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return const_cast<char*>(sprout::strstr(const_cast<char const*>(s1), s2));
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}
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} // namespace sprout
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#endif // #ifndef SPROUT_CSTRING_STRSTR_HPP
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