static const ubyte base32_PAD = '=';
static const char[] _encodeTable = "ABCDEFGHIJKLMNOPQRSTUVWXYZ234567";

/*******************************************************************************
    encodes data and returns as an ASCII base32 string.
*******************************************************************************/
char[] encode(ubyte[] data, char[] buff, bool pad=true)
in
{
    assert(data);
    assert(buff.length >= allocateEncodeSize(data));
}
body
{
    uint i = 0;
    ushort remainder; // Carries overflow bits to next char
    byte remainlen;  // Tracks bits in remainder
    foreach (ubyte j; data)
    {
        remainder = (remainder<<8) | j;
        remainlen += 8;
        do {
            remainlen -= 5;
            buff[i++] = _encodeTable[(remainder>>remainlen)&0b11111];
        } while (remainlen > 5)
    }
    if (remainlen)
        buff[i++] = _encodeTable[(remainder<<(5-remainlen))&0b11111];
    if (pad) {
        for (ubyte padCount=(-i%8);padCount > 0; padCount--)
            buff[i++] = base32_PAD;
    }

    return buff[0..i];
}


/*******************
 * Called like this
 ******************/
scope char[64] idHexBuf;
auto idHex = base32.encode(asset.localId, idHexBuf);