Class: Bake::Parser

Inherits:
Object
  • Object
show all
Defined in:
lib/common/options/parser.rb

Direct Known Subclasses

BakeryOptions, Options, VsOptions

Instance Method Summary collapse

Constructor Details

#initialize(argv) ⇒ Parser

Returns a new instance of Parser.



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# File 'lib/common/options/parser.rb', line 8

def initialize(argv)
  @arguments = {}
  @argv = argv
end

Instance Method Details

#add_option(params, block) ⇒ Object

def add_option(opt)

@arguments[opt.param] = opt

end



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# File 'lib/common/options/parser.rb', line 17

def add_option(params, block)
  params.each { |p| @arguments[p] = block }
end

#get_block(param) ⇒ Object 



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# File 'lib/common/options/parser.rb', line 21

def get_block(param)
  opt = @arguments[param]
  raise "Internal error in option handling" unless opt
  opt.block
end

#parse_internal(ignore_invalid = false) ⇒ Object 



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# File 'lib/common/options/parser.rb', line 27

def parse_internal(ignore_invalid = false)
  pos = 0
  begin
    while pos < @argv.length do
      if not @arguments.include?@argv[pos]
        index = @argv[pos].index('-')
        if index != nil and index == 0
          raise "Option #{@argv[pos]} unknown" if not ignore_invalid
        else
          @arguments[""].call(@argv[pos]) # default paramter without "-"
        end
      else
        option = @arguments[@argv[pos]]
        if option.parameters.length == 1
          if pos+1 < @argv.length and @argv[pos+1][0] != "-"
            option.call(@argv[pos+1])
            pos = pos + 1
          else
            raise "Argument for option #{@argv[pos]} missing" 
          end
        else
          option.call()
        end
      end
      pos = pos + 1
    end
  rescue SystemExit => e
    raise
  rescue Exception => e
    Bake.formatter.printError("Error: " + e.message)
    ExitHelper.exit(1)
  end
  
end