File: bits2str.awk

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gawk 1%3A4.1.1%2Bdfsg-1
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# bits2str --- turn a byte into readable 1's and 0's

function bits2str(bits,        data, mask)
{
    if (bits == 0)
        return "0"

    mask = 1
    for (; bits != 0; bits = rshift(bits, 1))
        data = (and(bits, mask) ? "1" : "0") data

    while ((length(data) % 8) != 0)
        data = "0" data

    return data
}