Class: Reckon::LedgerParser

Inherits:
Object
  • Object
show all
Defined in:
lib/reckon/ledger_parser.rb

Overview

Parses ledger files

Instance Method Summary collapse

Constructor Details

#initialize(options = {}) ⇒ LedgerParser

ledger is an object that response to #each_line, (i.e. a StringIO or an IO object)



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# File 'lib/reckon/ledger_parser.rb', line 114

def initialize(options = {})
  @options = options
  @date_format = options[:ledger_date_format] || options[:date_format] || '%Y-%m-%d'
end

Instance Method Details

#format_row(row, line1, line2) ⇒ Object 



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# File 'lib/reckon/ledger_parser.rb', line 177

def format_row(row, line1, line2)
  note = row[:note] ? "\t; #{row[:note]}" : ""
  out = "#{row[:pretty_date]}\t#{row[:description]}#{note}\n"
  out += "\t#{line1.first}\t\t\t#{line1.last}\n"
  out += "\t#{line2.first}\t\t\t#{line2.last}\n\n"
  out
end

#parse(ledger) ⇒ Object 



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# File 'lib/reckon/ledger_parser.rb', line 119

def parse(ledger)
  entries = []
  new_entry = {}
  in_comment = false
  comment_chars = ';#%*|'
  ledger.each_line do |entry|
    entry.rstrip!
    # strip comment lines
    in_comment = true if entry == 'comment'
    in_comment = false if entry == 'end comment'
    next if in_comment
    next if entry =~ /^\s*[#{comment_chars}]/

    # (date, type, code, description), type and code are optional
    if (m = entry.match(%r{^(\d+[^\s]+)\s+([*!])?\s*(\([^)]+\))?\s*(.*)$}))
      add_entry(entries, new_entry)
      new_entry = {
        date: try_parse_date(m[1]),
        type: m[2] || "",
        code: m[3] && m[3].tr('()', '') || "",
        desc: m[4].strip,
        accounts: []
      }
    elsif entry =~ /^\s*$/ && new_entry[:date]
      add_entry(entries, new_entry)
      new_entry = {}
    elsif new_entry[:date] && entry =~ /^\s+/
      LOGGER.info("Adding new account #{entry}")
      new_entry[:accounts] << (entry)
    else
      LOGGER.info("Unknown entry type: #{entry}")
      add_entry(entries, new_entry)
      new_entry = {}
    end
  end
  add_entry(entries, new_entry)
  entries
end

#to_csv(ledger) ⇒ Object

roughly matches ledger csv format



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# File 'lib/reckon/ledger_parser.rb', line 159

def to_csv(ledger)
  return parse(ledger).flat_map do |n|
    n[:accounts].map do |a|
      row = [
        n[:date].strftime(@date_format),
        n[:code],
        n[:desc],
        a[:name],
        "", # currency (not implemented)
        a[:amount],
        n[:type],
        "", # account comment (not implemented)
      ]
      CSV.generate_line(row).strip
    end
  end
end