Zig 0.17.0-dev (Split by item)

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strlcat

string.strlcat

fn strlcat(dst: [*:0]c_char, src: [*:0]const c_char, dst_total_len: usize) callconv(.c) usize

File

lib/c/string.zig:254

Code

fn strlcat(dst: [*:0]c_char, src: [*:0]const c_char, dst_total_len: usize) callconv(.c) usize {
    const dst_len = strnlen(dst, dst_total_len);
    const src_bytes = std.mem.span(@as([*:0]const u8, @ptrCast(src)));

    if (dst_total_len == dst_len) return dst_len + src_bytes.len;

    const copying_len = @min(dst_total_len - (dst_len + 1), src_bytes.len);

    @memcpy(dst[dst_len..][0..copying_len], src[0..copying_len]);
    dst[dst_len + copying_len] = 0;
    return dst_len + src_bytes.len;
}