require 'ostruct'                                                                                        
require 'optparse'                                                                                       
                                                                                                         
class ArgumentParser                                                                                     
    def initialize                                                                                       
        @options         = OpenStruct.new                                                                
        @options.scanner = 'scanner'                                                                     
        @options.input   = STDIN                                                                         
        @options.output  = nil                                                                           
        @options.verbose = false                                                                         
                                                                                                         
        @optionParser    = OptionParser.new do |optionParser|                                            
            optionParser.banner = "Usage: #{optionParser.program_name} [options] [input files]"          
            optionParser.separator ''                                                                    
                                                                                                         
            optionParser.on('-s', '--scanner=BINARY', 'Name of the scanner executable') do |s|           
                @options.scanner = s                                                                     
            end                                                                                          
            optionParser.on('-o', '--output=FILE', 'File where all the output will be written to') do |o|
                @options.output  = o                                                                     
            end                                                                                          
            optionParser.on('-v', '--[no-]verbose', 'Run verbosely') do |v|                              
                @options.verbose = v                                                                     
            end                                                                                          
            optionParser.on_tail('-h', '--help', 'Display this') do |h|                                  
                puts optionParser                                                                        
            end                                                                                          
        end                                                                                              
    end                                                                                                  
                                                                                                         
    def parseArguments(args)                                                                             
        begin                                                                                            
            @optionParser.parse!(args)                                                                   
        rescue Exception => e                                                                            
            puts e, '', @optionParser                                                                    
        end                                                                                              
        @options                                                                                         
    end                                                                                                  
end