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feat(std.ascii): add boundedOrderIgnoreCaseZ

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GasInfinity
2026-01-17 19:35:18 +01:00
parent 26de7a3513
commit 3d8b0e3324
1 changed files with 24 additions and 0 deletions
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lib/std/ascii.zig
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@@ -464,6 +464,30 @@ pub fn orderIgnoreCase(lhs: []const u8, rhs: []const u8) std.math.Order {
return std.math.order(lhs.len, rhs.len);
}
/// Returns the lexicographical order of two many-item pointers with NUL-termination. O(n).
pub fn orderIgnoreCaseZ(lhs: [*:0]const u8, rhs: [*:0]const u8) std.math.Order {
return boundedOrderIgnoreCaseZ(lhs, rhs, std.math.maxInt(usize));
}
test orderIgnoreCaseZ {
try std.testing.expect(orderIgnoreCaseZ("aBcD", "Bee") == .lt);
try std.testing.expect(orderIgnoreCaseZ("AbC", "aBc") == .eq);
try std.testing.expect(orderIgnoreCaseZ("abC", "aBc0") == .lt);
try std.testing.expect(orderIgnoreCaseZ("", "") == .eq);
try std.testing.expect(orderIgnoreCaseZ("", "a") == .lt);
const s: [*:0]const u8 = "Abc";
try std.testing.expect(orderIgnoreCaseZ(s, s) == .eq);
}
/// Returns the lexicographical order of two many-item pointers with NUL-termination until some specified bound. O(n).
pub fn boundedOrderIgnoreCaseZ(lhs: [*:0]const u8, rhs: [*:0]const u8, bound: usize) std.math.Order {
if (lhs == rhs) return .eq;
var i: usize = 0;
while (i < bound and toLower(lhs[i]) == toLower(rhs[i]) and lhs[i] != 0) : (i += 1) {}
return if (i < bound) std.math.order(toLower(lhs[i]), toLower(rhs[i])) else .eq;
}
/// Returns whether the lexicographical order of `lhs` is lower than `rhs`.
pub fn lessThanIgnoreCase(lhs: []const u8, rhs: []const u8) bool {
return orderIgnoreCase(lhs, rhs) == .lt;