Contents

require 'parseitc/transaction'

module ParseITC
  class Parser
    attr_accessor :transactions
    Version = '0.1.4'
    # files can be either string or array
    def initialize(files=[])
      @transactions = []
      add_files files
    end

    def add_files files
      [files].flatten.each do |file|
        add_file file
      end
    end

    def add_file file
      lines = File.readlines(file)
      lines.shift if lines.first.match(/^Provider/)
      lines.each do |xion|
        add_transaction xion
      end
    end

    def add_transaction transaction
      @transactions << Transaction.new(transaction.split(/\t|\n/))
    end

    private
      def method_missing(method_id, *arguments)
        match = /split_by_([_a-zA-Z]\w*)/.match(method_id.to_s)
        if match
          split_by(match)
        else
          match = /count_by_([_a-zA-Z]\w*)|numbers_by_([_a-zA-Z]\w*)/.match(method_id.to_s)
          if match
            count_by(match)
          else
            super
          end
        end
      end

      def split_by(match)
        field = match.captures.first
        raise NoMethodError.new("#{match}") unless @transactions.first.has_field? field
        split_by_field field
      end

      def split_by_field field
        values = {}
        @transactions.each do |xion|
          value = xion.send(field.to_sym)
          values[value] ||= Parser.new
          values[value].transactions << xion
        end
        values
      end

      def count_by(match)
        field = match.captures.first
        raise NoMethodError.new("#{match}") unless @transactions.first.has_field? field
        get_count_by_field field
      end

      def get_count_by_field field
        values = {}
        @transactions.each do |xion|
          value = xion.send(field.to_sym)
          values[value] = (values[value] || 0) + xion.units.to_i
        end
        values
      end

    # end private
  end

  # deprecated
  class TransactionParser < Parser
  end
end

Version data entries

1 entries across 1 versions & 1 rubygems

Version	Path
parseitc-0.1.4	lib/parseitc/parser.rb