regex101: pack

Explanation

Pro

Group 1(\d+?[\+x])?

?repeats the group contents below at most once:

\d+?a digit, repeated at least once

Character Class[\+x]

\+the literal + (43₁₀ / 53₈ / 2B₁₆)

xthe literal x (120₁₀ / 170₈ / 78₁₆) (case insensitive)

\d+a digit, repeated at least once

?optionally matches the literal (32₁₀ / 40₈ / 20₁₆)

Group 2(litros?|u(ni)?ds?|kg|g|cl)

1st Alternativelitros?

litrothe literal text litro (case insensitive)

s?optionally matches the literal s (115₁₀ / 163₈ / 73₁₆) (case insensitive)

2nd Alternativeu(ni)?ds?

uthe literal u (117₁₀ / 165₈ / 75₁₆) (case insensitive)

Group 3(ni)?

?repeats the group contents below at most once:

nithe literal text ni (case insensitive)

dthe literal d (100₁₀ / 144₈ / 64₁₆) (case insensitive)

s?optionally matches the literal s (115₁₀ / 163₈ / 73₁₆) (case insensitive)

3rd Alternativekg

kgthe literal text kg (case insensitive)

4th Alternativeg

gthe literal g (103₁₀ / 147₈ / 67₁₆) (case insensitive)

5th Alternativecl

clthe literal text cl (case insensitive)

Group 4(.?, \w+ \d+ ?(litros?|u(ni)?ds|kg|g))?

?repeats the group contents below at most once:

.?optionally matches any character (except for line terminators)

, the literal text ,

\w+any word character, repeated at least once

the literal (32₁₀ / 40₈ / 20₁₆)

\d+a digit, repeated at least once

?optionally matches the literal (32₁₀ / 40₈ / 20₁₆)

Group 5(litros?|u(ni)?ds|kg|g)

1st Alternativelitros?

litrothe literal text litro (case insensitive)

s?optionally matches the literal s (115₁₀ / 163₈ / 73₁₆) (case insensitive)

2nd Alternativeu(ni)?ds

uthe literal u (117₁₀ / 165₈ / 75₁₆) (case insensitive)

Group 6(ni)?

?repeats the group contents below at most once:

nithe literal text ni (case insensitive)

dsthe literal text ds (case insensitive)

3rd Alternativekg

kgthe literal text kg (case insensitive)

4th Alternativeg

gthe literal g (103₁₀ / 147₈ / 67₁₆) (case insensitive)

Global pattern flags

g modifier: global. Finds all matches instead of stopping after the first

m modifier: multiline. Causes ^ and $ to match the start and end of each line, not only the start and end of the string

i modifier: insensitive. Matches without distinguishing uppercase and lowercase letters

Quick Reference

25 tokens

Regular Expression

(\d+?[\+x])?\d+ ?(litros?|u(ni)?ds?|kg|g|cl)(.?, \w+ \d+ ?(litros?|u(ni)?ds|kg|g))?

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