Създаване на хеш чрез map

Програмиране с Ruby

Курс във Факултета по Математика и Информатика към СУ

Решение на Трета задача - Четене на командни аргументи от Георги Карапетров

Обратно към всички решения

Към профила на Георги Карапетров

Резултати

  • 5 точки от тестове
  • 0 бонус точки
  • 5 точки общо
  • 13 успешни тест(а)
  • 2 неуспешни тест(а)

Код

class Option
attr_reader :short_name, :full_name, :description, :parameter
def initialize(short_name, full_name, description, parameter = nil)
@short_name = short_name
@full_name = full_name
@description = description
@parameter = parameter
end
def is?(name)
@short_name == name || @full_name == name
end
def to_s
parameter_string = @parameter.nil? ? '' : "=#{@parameter}"
"\n -#{@short_name}, --#{@full_name}#{parameter_string} #{@description}"
end
end
class StringExtractor
def extract_option_names(argv)
tuples = options_parameters(argv)
tuples.map { |option, _| option.tr('-', '') }
end
def option?(string)
string.include?('-')
end
def argument?(string)
!string.nil? && !option?(string)
end
def option_with_parameter?(string)
short_option_with_parameter?(string) || long_option_with_parameter?(string)
end
def short_option_with_parameter?(string)
string.length > 2 && string[1] != '-'
end
def long_option_with_parameter?(string)
string.include?('=')
end
def extract_arguments(argv)
argv.select { |string| argument?(string) }
end
def extract_options(argv)
argv.select { |string| option?(string) }
end
def extract_parameters(argv)
with_parameters = argv.select { |string| option_with_parameter?(string) }
with_parameters.map { |option| extract_parameter(option) }
end
def extract_parameter(string)
option_parameter(string).last
end
def options_parameters(argv)
options = extract_options(argv)
options.map { |option| option_parameter(option) }
end
def option_parameter(string)
option = string
option = string[0..1] if short_option_with_parameter?(string)
option = string.split('=').first if long_option_with_parameter?(string)
parameter = nil
parameter = string[2..-1] if short_option_with_parameter?(string)
parameter = string.split('=').last if long_option_with_parameter?(string)
[option, parameter]
end
end
class CommandParser < StringExtractor
def initialize(command_name)
@command_name = command_name
@arguments = []
@options = []
@parameters = []
@blocks = {}
end
def argument(argument_name, &block)
@arguments << argument_name
@blocks[argument_name] = block
end
def option(short_name, full_name, description, &block)
self.option_with_parameter(short_name, full_name, description, nil, &block)
end
def option_with_parameter(name, full_name, description, parameter, &block)
option_entry = Option.new(name, full_name, description, parameter)
@options << option_entry
@parameters << parameter unless parameter.nil?
@blocks[option_entry] = block
end
def parse(command_runner, argv)
parse_arguments(argv, command_runner)
parse_options(argv, command_runner)
parse_parameters(argv, command_runner)
end
def help
"Usage: #{@command_name} #{arguments_string}#{options_string}"
end
private
def arguments_string
@arguments.map { |argument| "[#{argument}]" }.join(' ')
end
def options_string
@options.map { |option| option.to_s }.join('')
end
def parse_arguments(argv, command_runner)
input_arguments = extract_arguments(argv)
return if input_arguments.empty?
tuples = @arguments.zip(input_arguments)
tuples.each { |first, second| @blocks[first].call command_runner, second }
end
def parse_options(argv, command_runner)
option_names = extract_option_names(argv)
return if option_names.empty?
options = option_names.map { |name| get_option_with_name(name) }.compact
options.each { |option| @blocks[option].call command_runner, true }
end
def parse_parameters(argv, command_runner)
parameters = extract_parameters(argv)
return if parameters.empty?
tuples = extract_option_names(argv).zip(parameters)
tuples.each do |option_name, parameter|
option = get_option_with_name(option_name)
@blocks[option].call command_runner, parameter
end
end
def get_option_with_name(name)
selected = @options.select { |option| option.is?(name) }
selected.first
end
end

Лог от изпълнението

.......F.....F.

Failures:

  1) CommandParser#help shows basic usage message
     Failure/Error: expect(parser.help).to eq 'Usage: ls'
       
       expected: "Usage: ls"
            got: "Usage: ls "
       
       (compared using ==)
     # /tmp/d20161113-27983-3b3g7j/spec.rb:104:in `block (3 levels) in <top (required)>'
     # ./lib/language/ruby/run_with_timeout.rb:7:in `block (3 levels) in <top (required)>'
     # ./lib/language/ruby/run_with_timeout.rb:7:in `block (2 levels) in <top (required)>'

  2) CommandParser when having options with and without values and parameters parses all the options and arguments correctly
     Failure/Error: expect(command_runner[:all]).to be true
       
       expected #<TrueClass:20> => true
            got #<String:70028810384000> => "size"
       
       Compared using equal?, which compares object identity,
       but expected and actual are not the same object. Use
       `expect(actual).to eq(expected)` if you don't care about
       object identity in this example.
       
       
       Diff:
       @@ -1,2 +1,2 @@
       -true
       +"size"
     # /tmp/d20161113-27983-3b3g7j/spec.rb:174:in `block (3 levels) in <top (required)>'
     # ./lib/language/ruby/run_with_timeout.rb:7:in `block (3 levels) in <top (required)>'
     # ./lib/language/ruby/run_with_timeout.rb:7:in `block (2 levels) in <top (required)>'

Finished in 0.00941 seconds
15 examples, 2 failures

Failed examples:

rspec /tmp/d20161113-27983-3b3g7j/spec.rb:103 # CommandParser#help shows basic usage message
rspec /tmp/d20161113-27983-3b3g7j/spec.rb:168 # CommandParser when having options with and without values and parameters parses all the options and arguments correctly

История (2 версии и 0 коментара)

Георги обнови решението на 09.11.2016 11:32 (преди около 8 години)

+class Option
+ attr_reader :short_name, :full_name, :description, :parameter
+ def initialize(short_name, full_name, description, parameter = nil)
+ @short_name = short_name
+ @full_name = full_name
+ @description = description
+ @parameter = parameter
+ end
+
+ def is?(name)
+ @short_name == name || @full_name == name
+ end
+
+ def to_s
+ parameter_string = @parameter.nil? ? '' : "=#{@parameter}"
+ "\n -#{@short_name}, --#{@full_name}#{parameter_string} #{@description}"
+ end
+end
+
+class StringExtractor
+ def extract_option_names(argv)
+ tuples = options_parameters(argv)
+ tuples.map { |option, _| option.tr('-', '') }
+ end
+
+ def option?(string)
+ string.include?('-')
+ end
+
+ def argument?(string)
+ !string.nil? && !option?(string)
+ end
+
+ def option_with_parameter?(string)
+ short_option_with_parameter?(string) || long_option_with_parameter?(string)
+ end
+
+ def short_option_with_parameter?(string)
+ string.length > 1 && string[1] != '-'
+ end
+
+ def long_option_with_parameter?(string)
+ string.include?('=')
+ end
+
+ def extract_arguments(argv)
+ argv.select { |string| argument?(string) }
+ end
+
+ def extract_options(argv)
+ argv.select { |string| option?(string) }
+ end
+
+ def extract_parameters(argv)
+ with_parameters = argv.select { |string| option_with_parameter?(string) }
+ with_parameters.map { |option| extract_parameter(option) }
+ end
+
+ def extract_parameter(string)
+ option_parameter(string).last
+ end
+
+ def options_parameters(argv)
+ options = extract_options(argv)
+ options.map { |option| option_parameter(option) }
+ end
+
+ def option_parameter(string)
+ option = string
+ option = string[0..1] if short_option_with_parameter?(string)
+ option = string.split('=').first if long_option_with_parameter?(string)
+
+ parameter = nil
+ parameter = string[2..-1] if short_option_with_parameter?(string)
+ parameter = string.split('=').last if long_option_with_parameter?(string)
+
+ [option, parameter]
+ end
+end
+
+class CommandParser < StringExtractor
+ def initialize(command_name)
+ @command_name = command_name
+ @arguments = []
+ @options = []
+ @parameters = []
+ @blocks = {}
+ end
+
+ def argument(argument_name, &block)
+ @arguments << argument_name
+ @blocks[argument_name] = block
+ end
+
+ def option(short_name, full_name, description, &block)
+ self.option_with_parameter(short_name, full_name, description, nil, &block)
+ end
+
+ def option_with_parameter(name, full_name, description, parameter, &block)
+ option_entry = Option.new(name, full_name, description, parameter)
+ @options << option_entry
+ @parameters << parameter unless parameter.nil?
+ @blocks[option_entry] = block
+ end
+
+ def parse(command_runner, argv)
+ parse_arguments(argv, command_runner)
+ parse_options(argv, command_runner)
+ parse_parameters(argv, command_runner)
+ end
+
+ def help
+ "Usage: #{@command_name} #{arguments_string}#{options_string}"
+ end
+
+ private
+ def arguments_string
+ @arguments.map { |argument| "[#{argument}]" }.join(' ')
+ end
+
+ def options_string
+ @options.map { |option| option.to_s }.join('')
+ end
+
+ def parse_arguments(argv, command_runner)
+ input_arguments = extract_arguments(argv)
+ return if input_arguments.empty?
+
+ tuples = @arguments.zip(input_arguments)
+ tuples.each { |first, second| @blocks[first].call command_runner, second }
+ end
+
+ def parse_options(argv, command_runner)
+ option_names = extract_option_names(argv)
+ return if option_names.empty?
+
+ options = option_names.map { |name| get_option_with_name(name) }.compact
+ options.each { |option| @blocks[option].call command_runner, true }
+ end
+
+ def parse_parameters(argv, command_runner)
+ parameters = extract_parameters(argv)
+ return if parameters.empty?
+
+ tuples = extract_option_names(argv).zip(parameters)
+ tuples.each do |option_name, parameter|
+ option = get_option_with_name(option_name)
+ @blocks[option].call command_runner, parameter
+ end
+ end
+
+ def get_option_with_name(name)
+ selected = @options.select { |option| option.is?(name) }
+ selected.first
+ end
+end

Георги обнови решението на 09.11.2016 11:59 (преди около 8 години)

class Option
attr_reader :short_name, :full_name, :description, :parameter
def initialize(short_name, full_name, description, parameter = nil)
@short_name = short_name
@full_name = full_name
@description = description
@parameter = parameter
end
def is?(name)
@short_name == name || @full_name == name
end
def to_s
parameter_string = @parameter.nil? ? '' : "=#{@parameter}"
"\n -#{@short_name}, --#{@full_name}#{parameter_string} #{@description}"
end
end
class StringExtractor
def extract_option_names(argv)
tuples = options_parameters(argv)
tuples.map { |option, _| option.tr('-', '') }
end
def option?(string)
string.include?('-')
end
def argument?(string)
!string.nil? && !option?(string)
end
def option_with_parameter?(string)
short_option_with_parameter?(string) || long_option_with_parameter?(string)
end
def short_option_with_parameter?(string)
- string.length > 1 && string[1] != '-'
+ string.length > 2 && string[1] != '-'
end
def long_option_with_parameter?(string)
string.include?('=')
end
def extract_arguments(argv)
argv.select { |string| argument?(string) }
end
def extract_options(argv)
argv.select { |string| option?(string) }
end
def extract_parameters(argv)
with_parameters = argv.select { |string| option_with_parameter?(string) }
with_parameters.map { |option| extract_parameter(option) }
end
def extract_parameter(string)
option_parameter(string).last
end
def options_parameters(argv)
options = extract_options(argv)
options.map { |option| option_parameter(option) }
end
def option_parameter(string)
option = string
option = string[0..1] if short_option_with_parameter?(string)
option = string.split('=').first if long_option_with_parameter?(string)
parameter = nil
parameter = string[2..-1] if short_option_with_parameter?(string)
parameter = string.split('=').last if long_option_with_parameter?(string)
[option, parameter]
end
end
class CommandParser < StringExtractor
def initialize(command_name)
@command_name = command_name
@arguments = []
@options = []
@parameters = []
@blocks = {}
end
def argument(argument_name, &block)
@arguments << argument_name
@blocks[argument_name] = block
end
def option(short_name, full_name, description, &block)
self.option_with_parameter(short_name, full_name, description, nil, &block)
end
def option_with_parameter(name, full_name, description, parameter, &block)
option_entry = Option.new(name, full_name, description, parameter)
@options << option_entry
@parameters << parameter unless parameter.nil?
@blocks[option_entry] = block
end
def parse(command_runner, argv)
parse_arguments(argv, command_runner)
parse_options(argv, command_runner)
parse_parameters(argv, command_runner)
end
def help
"Usage: #{@command_name} #{arguments_string}#{options_string}"
end
private
def arguments_string
@arguments.map { |argument| "[#{argument}]" }.join(' ')
end
def options_string
@options.map { |option| option.to_s }.join('')
end
def parse_arguments(argv, command_runner)
input_arguments = extract_arguments(argv)
return if input_arguments.empty?
tuples = @arguments.zip(input_arguments)
tuples.each { |first, second| @blocks[first].call command_runner, second }
end
def parse_options(argv, command_runner)
option_names = extract_option_names(argv)
return if option_names.empty?
options = option_names.map { |name| get_option_with_name(name) }.compact
options.each { |option| @blocks[option].call command_runner, true }
end
def parse_parameters(argv, command_runner)
parameters = extract_parameters(argv)
return if parameters.empty?
tuples = extract_option_names(argv).zip(parameters)
tuples.each do |option_name, parameter|
option = get_option_with_name(option_name)
@blocks[option].call command_runner, parameter
end
end
def get_option_with_name(name)
selected = @options.select { |option| option.is?(name) }
selected.first
end
end