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mutatrum/decode_hex.jq

Created October 6, 2022 08:12
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Define decode_hex function for jq.
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decode_hex.jq
def decode_hex:
def decode: if . < 58 then .-48 elif . < 91 then .-55 else .-87 end;
def decode_byte: map(decode) | (.[0] * 16) + .[1];
def pairs: explode | range(0;length;2) as $i | [.[$i], .[$i+1]];
def filter: if (. < 32 or (. >= 128 and . <= 159)) then 46 else . end;
[pairs|decode_byte|filter] | implode;
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mutatrum commented Oct 6, 2022

Needs to be placed in ~/.jq/

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