Zig 0.17.0-dev (Split by item)

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bytesToHex

Encodes a sequence of bytes as hexadecimal digits. Returns an array containing the encoded bytes.

fmt.bytesToHex

pub fn bytesToHex(input: anytype, case: Case) [input.len * 2]u8

File

lib/std/fmt.zig:1142

Code

pub fn bytesToHex(input: anytype, case: Case) [input.len * 2]u8 {
    if (input.len == 0) return [_]u8{};
    comptime assert(@TypeOf(input[0]) == u8); // elements to encode must be unsigned bytes

    const charset = "0123456789" ++ if (case == .upper) "ABCDEF" else "abcdef";
    var result: [input.len * 2]u8 = undefined;
    for (input, 0..) |b, i| {
        result[i * 2 + 0] = charset[b >> 4];
        result[i * 2 + 1] = charset[b & 15];
    }
    return result;
}