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Match product dimensions with regular expression

I am trying to match length width and height with a regular expression.

I have the following cases

Artikelgewicht3,7 Kg
Produktabmessungen60,4 x 46,5 x 42 cm

or

Artikelgewicht3,7 Kg
Produktabmessungen60 x 46 x 42

or

Artikelgewicht3,7 Kg
Produktabmessungen60 x 46

The second case can be matched with (\d+) x (\d+) x (\d+), which works fine.

I further tried to match the first and the third case with (\d+)(\\,\d+)? x (\d+)(\\,\d+)? x (\d+)(\\,\d+)?.

Any suggestions what I am doing wrong?

Solution

  • You can use optional matches in your regex to cover all 3 cases:

    (\d+(?:,\d+)?) x (\d+(?:,\d+)?)(?: x (\d+(?:,\d+)?))?

    RegEx Demo

    This will give length in 1st capturing group, width in 2nd capturing group and height in 3rd.

    Each group is using this sub-expression:

    (\d+(?:,\d+)?)

    Which is 1 or more digits optionally followed by a comma and 1+ digits for decimal part.

    Also, note that height part is an optional match as we're using (?: x (\d+(?:,\d+)?))? to make that part optional.