Class: SimpleOptionParser

Inherits:
Object
  • Object
show all
Defined in:
lib/simple_option_parser.rb,
lib/simple_option_parser/version.rb

Constant Summary collapse

VERSION = 
'0.3'

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(defaults = {}) ⇒ SimpleOptionParser

Returns a new instance of SimpleOptionParser.



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# File 'lib/simple_option_parser.rb', line 9

def initialize(defaults={})
  @defaults = defaults
end

Instance Attribute Details

#defaults ⇒ Object

Returns the value of attribute defaults.



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# File 'lib/simple_option_parser.rb', line 3

def defaults
  @defaults
end

Class Method Details

.parse(argv, defaults = {}) ⇒ Object 



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# File 'lib/simple_option_parser.rb', line 5

def self.parse(argv, defaults={})
  new(defaults).parse(argv)
end

Instance Method Details

#parse(argv) ⇒ Object 



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# File 'lib/simple_option_parser.rb', line 13

def parse(argv)
  options = @defaults.dup
  while argv.first =~ %r{^--([\w\-]+)(?:=(.*))?$}
    key, value = $1, $2
    key = key.gsub('-', '_').to_sym
    options[key] = parse_value(value)
    argv.shift
  end
  options
end

#parse_value(value) ⇒ Object 



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# File 'lib/simple_option_parser.rb', line 24

def parse_value(value)
  case value
  when %r{^[\d.]+$}
    value.to_f
  when %r{^(\d+)/(\d+)$}
    Rational($1.to_i, $2.to_i)
  when 'true', 'yes', 'on'
    true
  when 'false', 'no', 'off'
    false
  when nil
    true
  else
    value
  end
end