Class: Kwaff::CommandOptionParser

Inherits:
Object
  • Object
show all
Defined in:
lib/kwaff/optparse.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(noarg_opts = '', argneed_opts = '', argoptional_opts = '', flag_str2value = true) ⇒ CommandOptionParser

Returns a new instance of CommandOptionParser.



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# File 'lib/kwaff/optparse.rb', line 18

def initialize(noarg_opts='', argneed_opts='', argoptional_opts='', flag_str2value=true)
   @noarg_opts       = noarg_opts
   @argneed_opts     = argneed_opts
   @argoptional_opts = argoptional_opts
   @flag_str2value   = flag_str2value
   @options    = nil
   @properties = nil
end

Instance Attribute Details

#options ⇒ Object (readonly)

Returns the value of attribute options.



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# File 'lib/kwaff/optparse.rb', line 26

def options
  @options
end

#properites ⇒ Object (readonly)

Returns the value of attribute properites.



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# File 'lib/kwaff/optparse.rb', line 26

def properites
  @properites
end

Instance Method Details

#parse(argv = ARGV) ⇒ Object 



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# File 'lib/kwaff/optparse.rb', line 29

def parse(argv=ARGV)
   options    = {}
   properties = {}

   while !argv.empty? && argv[0][0] == ?-
      opt = argv.shift
      if opt[1] == ?-			## properteis
         propstr = opt.sub(/^--/, '')
         unless propstr =~ /^([-\w]+)(?:=(.*))?$/
            raise CommandOptionError.new("--#{optstr}: invalid property.")
         end
         name  = $1
         value = $2
         name.gsub!(/-/, '_')
         if !value
            value = true
         elsif flag_str2value
            value = self.to_value(value)
         end
         properties[name.intern] = value

      else				## options
         optstr = opt.sub(/^-/, '')
         while optstr && !optstr.empty?
            optchar = optstr[0]
            optstr = optstr[1, optstr.length-1]
            if @noarg_opts.include?(optchar)
               options[optchar] = true
            elsif @argneed_opts.include?(optchar)
               arg = optstr
               optstr = nil
               arg = argv.shift if !arg || arg.empty?
               unless arg
                  raise CommandOptionError.new("-#{optchar.chr}: argument required.")
               end
               options[optchar] = arg
            elsif @argoptional_opts.include?(optchar)
               arg = optstr && !optstr.empty? ? optstr : true
               optstr = nil
               options[optchar] = arg
            else
               raise CommandOptionError.new("-#{optchar.chr}: invalid option.")
            end
         end

      end   # if

   end   # while

   @options = options
   @properties = properties
   return options, properties
end

#to_value(str) ⇒ Object 



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# File 'lib/kwaff/optparse.rb', line 84

def to_value(str)
   case str
   when 'true', 'yes'     ;  return true
   when 'false', 'no'     ;  return false
   when 'null', 'nil'     ;  return nil
   when /\A\d+\z/         ;  return str.to_i
   when /\A\d+\.\d+\z/    ;  return str.to_f
   when /\A\/(.*)\/\z/    ;  return Regexp.new($1)
   when /\A'.*'\z/        ;  return eval(str)
   when /\A".*"\z/        ;  return eval(str)
   else
      return str
   end
end