46 lines
853 B
C++
46 lines
853 B
C++
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#include "config.h"
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#include "alstring.h"
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#include <cctype>
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#include <string>
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namespace {
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int to_upper(const char ch)
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{
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using char8_traits = std::char_traits<char>;
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return std::toupper(char8_traits::to_int_type(ch));
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}
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} // namespace
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namespace al {
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int strcasecmp(const char *str0, const char *str1) noexcept
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{
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do {
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const int diff{to_upper(*str0) - to_upper(*str1)};
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if(diff < 0) return -1;
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if(diff > 0) return 1;
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} while(*(str0++) && *(str1++));
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return 0;
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}
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int strncasecmp(const char *str0, const char *str1, std::size_t len) noexcept
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{
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if(len > 0)
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{
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do {
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const int diff{to_upper(*str0) - to_upper(*str1)};
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if(diff < 0) return -1;
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if(diff > 0) return 1;
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} while(--len && *(str0++) && *(str1++));
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}
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return 0;
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}
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} // namespace al
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