Class: ArgvParser
- Inherits:
-
Object
- Object
- ArgvParser
- Defined in:
- lib/argv_parser.rb
Instance Method Summary collapse
- #help ⇒ Object
- #hook(short, long, type, options) ⇒ Object
-
#initialize ⇒ ArgvParser
constructor
A new instance of ArgvParser.
- #parse!(args) ⇒ Object
Constructor Details
#initialize ⇒ ArgvParser
Returns a new instance of ArgvParser.
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# File 'lib/argv_parser.rb', line 3 def initialize @args = Hash.new @aliases = Hash.new @l_short = 0 @l_long = 0 end |
Instance Method Details
#help ⇒ Object
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# File 'lib/argv_parser.rb', line 23 def help puts "Help:" @args.each do |k,v| spaces = "" (@l_short-k.length).times { spaces << " " } spaces2 = "" (@l_long-v[:long].length).times { spaces2 << " " } puts "#{k}#{spaces} #{v[:long]}#{spaces2} mandatory: #{v[:opts][:mandatory] == true}" end end |
#hook(short, long, type, options) ⇒ Object
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# File 'lib/argv_parser.rb', line 10 def hook(short, long, type, ) raise ArgumentError.new("short is nil") if not short @args[short.downcase] = { :long => long, :type => type, :opts => , :yield => Proc.new {|p, v| yield(p, v) } } @l_short = short.length + 1 if @l_short < short.length + 1 @l_long = long.length + 1 if @l_long < long.length + 1 end |
#parse!(args) ⇒ Object
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# File 'lib/argv_parser.rb', line 34 def parse!(args) begin executor = Array.new i = 0 @mandatory = Array.new @args.each do |k,v| @mandatory.push k if v[:opts][:mandatory] end while i < args.length if v = @args[args[i].downcase] @mandatory.delete args[i].downcase n = nil if v[:type] raise ArgumentError.new("argument for #{args[i].downcase} missing") if i+1 >= args.length i += 1 case v[:type].to_s when "Array" n = args[i].split ',' when "Float" n = args[i].to_f when "Integer" n = args[i].to_i else n = $1 if args[i] =~ /^\"?(.*)\"?$/ end end executor.push [v[:yield], n] else raise ArgumentError.new("argument #{args[i].downcase} unknown") end i += 1 end if not @mandatory.empty? raise ArgumentError.new("mandatory #{@mandatory[0]} is missing") end if executor.empty? help else executor.each do |e| e[0].call(self, e[1]) end end rescue Exception => e puts "#{e.class}: #{e.}\n" help end end |