Class: MVCLI::Argv

Inherits:
Object
  • Object
show all
Defined in:
lib/mvcli/argv.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(argv, switches = []) ⇒ Argv

Returns a new instance of Argv.



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# File 'lib/mvcli/argv.rb', line 6

def initialize(argv, switches = [])
  @switches = switches.map(&:to_s)
  @arguments, @options = scan argv
end

Instance Attribute Details

#arguments ⇒ Object (readonly)

Returns the value of attribute arguments.



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# File 'lib/mvcli/argv.rb', line 4

def arguments
  @arguments
end

#options ⇒ Object (readonly)

Returns the value of attribute options.



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# File 'lib/mvcli/argv.rb', line 4

def options
  @options
end

Instance Method Details

#merge(options, key, value = nil) ⇒ Object 



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# File 'lib/mvcli/argv.rb', line 39

def merge(options, key, value = nil)
  key = underscore key
  values = options[key] || []
  options.merge(key => values + [value].compact)
end

#scan(argv, arguments = [], options = Map.new) ⇒ Object 



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# File 'lib/mvcli/argv.rb', line 11

def scan(argv, arguments = [], options = Map.new)
  current, *rest = argv
  case current
  when nil
    [arguments, options]
  when /^--(\w[[:graph:]]+)=([[:graph:]]+)$/
    scan rest, arguments, merge(options, $1, $2)
  when /^--no-(\w[[:graph:]]+)$/
    scan rest, arguments, merge(options, $1, false)
  when /^--(\w[[:graph:]]+)$/, /^-(\w)$/
    key = underscore $1
    if switch? key
      scan rest, arguments, merge(options, key, true)
    elsif rest.first =~ /^-/
      scan rest, arguments, merge(options, key)
    else
      value, *rest = rest
      scan rest, arguments, merge(options, key, value)
    end
  else
    scan rest, arguments + [current], options
  end
end

#switch?(key) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/mvcli/argv.rb', line 35

def switch?(key)
  @switches.member? underscore key
end

#underscore(string) ⇒ Object 



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# File 'lib/mvcli/argv.rb', line 45

def underscore(string)
  string.gsub('-','_')
end