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97 lines
3.5 KiB
Plaintext
97 lines
3.5 KiB
Plaintext
def tobits: _tobits({unit: 1, keep_range: false, pad_to_units: 0});
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def tobytes: _tobits({unit: 8, keep_range: false, pad_to_units: 0});
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def tobitsrange: _tobits({unit: 1, keep_range: true, pad_to_units: 0});
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def tobytesrange: _tobits({unit: 8, keep_range: true, pad_to_units: 0});
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def tobits($pad): _tobits({unit: 1, keep_range: false, pad_to_units: $pad});
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def tobytes($pad): _tobits({unit: 8, keep_range: false, pad_to_units: $pad});
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# same as regexp.QuoteMeta
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def _re_quote_meta:
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gsub("(?<c>[\\.\\+\\*\\?\\(\\)\\|\\[\\]\\{\\}\\^\\$\\)])"; "\\\(.c)");
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# TODO:
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# maybe implode, join. but what would it mean?
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# "abc" | tobits | explode | implode would not work
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# helper for overloading regex/string functions to support binary
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def _binary_or_orig(bfn; fn):
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if _exttype == "binary" then bfn
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else fn
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end;
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def _bytes_or_orig(bfn; fn):
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_binary_or_orig(
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# convert to bytes if bits
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( if .unit != 8 then tobytesrange end
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| bfn
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);
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fn
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);
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def _orig_explode: explode;
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def explode: _binary_or_orig([.[range(.size)]]; _orig_explode);
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def _orig_splits($val): splits($val);
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def _orig_splits($regex; $flags): splits($regex; $flags);
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def _splits_binary($regex; $flags):
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( . as $b
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# last null output is to do a last iteration that output from end of last match to end of binary
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| foreach (_match_binary($regex; $flags), null) as $m (
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{prev: null, current: null};
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( .prev = .current
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| .current = $m
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);
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if .prev == null then $b[0:.current.offset]
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elif .current == null then $b[.prev.offset+.prev.length:]
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else $b[.prev.offset+.prev.length:.current.offset]
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end
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)
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);
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def splits($val): _bytes_or_orig(_splits_binary($val; "g"); _orig_splits($val));
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def splits($regex; $flags): _bytes_or_orig(_splits_binary($regex; "g"+$flags); _orig_splits($regex; $flags));
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def _orig_split($val): split($val);
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def _orig_split($regex; $flags): split($regex; $flags);
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# split/1 splits on string not regexp
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def split($val): [splits($val | _re_quote_meta)];
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def split($regex; $flags): [splits($regex; $flags)];
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def _orig_test($val): test($val);
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def _orig_test($regex; $flags): test($regex; $flags);
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def _test_binary($regex; $flags):
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( isempty(_match_binary($regex; $flags))
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| not
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);
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def test($val): _bytes_or_orig(_test_binary($val; ""); _orig_test($val));
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def test($regex; $flags): _bytes_or_orig(_test_binary($regex; $flags); _orig_test($regex; $flags));
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def _orig_match($val): match($val);
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def _orig_match($regex; $flags): match($regex; $flags);
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def match($val): _bytes_or_orig(_match_binary($val; ""); _orig_match($val));
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def match($regex; $flags): _bytes_or_orig(_match_binary($regex; $flags); _orig_match($regex; $flags));
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def _orig_capture($val): capture($val);
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def _orig_capture($regex; $flags): capture($regex; $flags);
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def _capture_binary($regex; $flags):
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( . as $b
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| _match_binary($regex; $flags)
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| .captures
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| map(
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( select(.name)
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| {key: .name, value: .string}
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)
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)
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| from_entries
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);
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def capture($val): _bytes_or_orig(_capture_binary($val; ""); _orig_capture($val));
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def capture($regex; $flags): _bytes_or_orig(_capture_binary($regex; $flags); _orig_capture($regex; $flags));
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def _orig_scan($val): scan($val);
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def _orig_scan($regex; $flags): scan($regex; $flags);
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def _scan_binary($regex; $flags):
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( . as $b
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| _match_binary($regex; $flags)
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| $b[.offset:.offset+.length]
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);
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def scan($val): _bytes_or_orig(_scan_binary($val; "g"); _orig_scan($val));
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def scan($regex; $flags): _bytes_or_orig(_scan_binary($regex; "g"+$flags); _orig_scan($regex; $flags));
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