Class | CommandOptionParser |
In: |
kwalify/util/option-parser.rb
|
Parent: | Object |
ex.
## create parser arg_none = "hv" # ex. -h -v arg_required = "xf" # ex. -x suffix -f filename arg_optional = "i" # ex. -i (or -i10) parser = CommandOptionParser.new(arg_none, arg_required, arg_optional) ## parse options argv = %w[-h -v -f filename -i 10 aaa bbb] options, properties = parser.parse(argv) p options #=> { ?h=>true, ?v=>true, ?f=>"filename", ?i=>true } p argv #=> ["10", "aaa", "bbb"] ## parse options #2 argv = %w[-hvx.txt -ffilename -i10 aaa bbb] options, properties = parser.parse(argv) p options #=> { ?h=>true, ?v=>true, ?x=>".txt", ?f=>"filename", ?i=>10 } p argv #=> ["aaa", "bbb"] ## parse properties argv = %w[-hi --index=10 --user-name=foo --help] options, properties = parser.parse(argv) p options #=> {?h=>true, ?i=>true} p properties #=> {"index"=>"10", "user-name"=>"foo", "help"=>nil} ## parse properties with auto-convert argv = %w[-hi --index=10 --user-name=foo --help] options, properties = parser.parse(argv, true) p options #=> {?h=>true, ?i=>true} p properties #=> {:index=>10, :user_name=>foo, :help=>true} ## -a: unknown option. argv = %w[-abc] begin options, properties = parser.parse(argv) rescue CommandOptionError => ex $stderr.puts ex.message # -a: unknown option. end ## -f: argument required. argv = %w[-f] begin options, properties = parser.parse(argv) rescue CommandOptionError => ex $stderr.puts ex.message # -f: argument required. end ## --@prop=10: invalid property. argv = %w[--@prop=10] begin options, properties = parser.parse(argv) rescue CommandOptionError => ex $stderr.puts ex.message # --@prop=10: invalid property. end
arg_none: option string which takes no argument arg_required: option string which takes argument arg_otpional: option string which may takes argument optionally
# File kwalify/util/option-parser.rb, line 92 def initialize(arg_none=nil, arg_required=nil, arg_optional=nil) @arg_none = arg_none || "" @arg_required = arg_required || "" @arg_optional = arg_optional || "" end
# File kwalify/util/option-parser.rb, line 99 def self.to_value(str) case str when nil, "null", "nil" ; return nil when "true", "yes" ; return true when "false", "no" ; return false when /\A\d+\z/ ; return str.to_i when /\A\d+\.\d+\z/ ; return str.to_f when /\/(.*)\// ; return Regexp.new($1) when /\A'.*'\z/, /\A".*"\z/ ; return eval(str) else ; return str end end
argv: | array of string |
auto_convert: | if true, convert properties value to int, boolean, string, regexp, … (default false) |
# File kwalify/util/option-parser.rb, line 115 def parse(argv, auto_convert=false) options = {} properties = {} while argv[0] && argv[0][0] == ?- optstr = argv.shift optstr = optstr[1, optstr.length-1] # if optstr[0] == ?- ## property unless optstr =~ /\A\-([-\w]+)(?:=(.*))?/ raise CommandOptionError.new(optstr, :invalid_property) end prop_name = $1; prop_value = $2 if auto_convert key = prop_name.gsub(/-/, '_').intern value = prop_value.nil? ? true : CommandOptionParser.to_value(prop_value) properties[key] = value else properties[prop_name] = prop_value end # else ## options while optstr && !optstr.empty? optchar = optstr[0] optstr[0,1] = "" #puts "*** debug: optchar=#{optchar.chr}, optstr=#{optstr.inspect}" if @arg_none.include?(optchar) options[optchar] = true elsif @arg_required.include?(optchar) arg = optstr.empty? ? argv.shift : optstr raise CommandOptionError.new(optchar.chr, :no_argument) unless arg options[optchar] = arg optstr = nil elsif @arg_optional.include?(optchar) arg = optstr.empty? ? true : optstr options[optchar] = arg optstr = nil else raise CommandOptionError.new(optchar.chr, :unknown_option) end end end # end # end of while return options, properties end