class PoParser::Parser

Overview

Fast parser directly using Crystal's powerful StringScanner

Important notes about StringScanner.scan:

Scan will return nil if there is no match. Using the regex * (zero or more) quantifier will let scan return an empty string if there is "no match" as the empty string qualifies as a match of the regex (zero times). We make use of this "trick".
The start of line anchor ^ is obsolete as scan will only match start of line.
Ruby's (and by extension, Crystal's) regex is in single-line mode by default, therefore scan will only match until the next newline is hit unless multi-line mode is explicitly enabled.

po_parser/parser.cr

def self.new(message : String) #

Single message parser class.

@param message [String] a single PO message in String format without leading or trailing whitespace

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def parse #

Parses the message of the PO format.

@return [Hash(Symbol, String|Hash(UInt32, String))] PO message parsed into Hash format

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