[ox/std] Add caseInsensitiveEquals

2026-05-17 14:30:43 -05:00
parent be32d575f5
commit d1e410ac55
1 changed files with 21 additions and 0 deletions
@@ -36,6 +36,27 @@ constexpr StringView substr(StringViewCR str, std::size_t const start, std::size
 	return {};
 }

+[[nodiscard]]
+constexpr char toUpper(char const c) noexcept {
+	return c & 0b1101'1111;
+}
+
+[[nodiscard]]
+constexpr int caseInsensitiveEquals(ox::StringViewCR a, ox::StringViewCR b) noexcept {
+	auto const sz = ox::min(a.size(), b.size());
+	for (size_t i{}; i < sz; ++i) {
+		auto const ac = toUpper(a[i]);
+		auto const bc = toUpper(b[i]);
+		if (ac < bc) {
+			return -1;
+		}
+		if (ac > bc) {
+			return 1;
+		}
+	}
+	return 0;
+}
+
 [[nodiscard]]
 constexpr bool beginsWith(StringViewCR base, char const beginning) noexcept {
 	return base.size() && base[0] == beginning;