Regex Tester & Validator

Parses individual line items from Polish invoices or receipts, extracting fields like line number (Lp), product name (spanning up to 3 lines), quantity with unit, SWW classification code, net price, net value, VAT rate, VAT amount, gross value, and currency. Uses named capture groups and a negative lookahead to skip header rows containing column titles. Designed for structured invoice data with European number formatting.