Module: Parser

Defined in:
lib/day/parser.rb

Overview

DayRB Parser Module

Scans and validates ARGV inputs and builds the opts hash. (Performs argument validation, and checks that a specified task really exists.)

Class Method Summary collapse

Class Method Details

.parse_options(config) ⇒ Object

Parse ARGV into opts hash

Parameters:

  • config (Configuration) —

    Entire configuration object, needed for task lookups.



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# File 'lib/day/parser.rb', line 23

def parse_options(config)
  opts = {}
  @config = config

  opts[:operation] = case ARGV.first
  when nil
    :print
  when "-a", "-A"
    opts[:all] = true
    :print
  when "clear", "c"
    :clear
  when "delete", "rm"
    :delete
  when "info", "i"
    :print_info
  when "help"
    :print_help
  when "version"
    :print_version
  else
    handle_non_command(ARGV.first) # could either be a new task or switch to an existing one
  end

  opts[:task] = case opts[:operation]
  when :clear, :print_info
    check_for_second_argument
  when :delete
    demand_second_argument
  when :switch
    task = lookup_task(ARGV.first)
    if task && @config.context == task
      opts[:operation] = :leave
      nil
    elsif task
      task
    else
      raise ArgumentError, E_NO_SUCH_TASK
    end
  when :new
    ARGV.first
  end

  if opts[:operation] == :new
    opts = handle_new_task(opts)
  end

  opts.delete_if { |k, v| v.nil? }
  return opts
end