Списъци от символи с %i( foo bar baz )

Програмиране с Ruby

Курс във Факултета по Математика и Информатика към СУ

Решение на Трета задача от Деян Гюрджеклиев

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Към профила на Деян Гюрджеклиев

Резултати

  • 6 точки от тестове
  • 0 бонус точки
  • 6 точки общо
  • 42 успешни тест(а)
  • 2 неуспешни тест(а)

Код

module RBFS
class File
attr_reader :data_type, :data
def initialize(data = nil)
@data = data
@data_type = get_type_as_symbol(data)
end
def data=(data = nil)
@data = data
@data_type = get_type_as_symbol(data)
end
def serialize
data_type.to_s + ':' + data.to_s
end
def self.parse(string_data)
type_data_pair = string_data.split(':', 2)
actual_data = get_data_from(type_data_pair[0].to_sym, type_data_pair[1])
File.new(actual_data)
end
private
def get_type_as_symbol(data_type)
result_type = data_type.class.name.downcase.to_sym
case result_type
when :nilclass then :nil
when :falseclass, :trueclass then :boolean
when :fixnum, :float then :number
else result_type
end
end
def self.to_boolean(string)
return true if string == 'true'
false if string == 'false'
end
def self.to_number(string)
if string.include? '.'
string.to_f
else
string.to_i
end
end
def self.get_data_from(type, data)
case type
when :boolean then to_boolean(data)
when :symbol then data.to_sym
when :nil then nil
when :number then to_number(data)
when :string then data
end
end
end
class Directory
attr_reader :files, :directories
def initialize
@files = {}
@directories = {}
end
def add_file(name, file)
@files[name] = file
end
def add_directory(name, directory = nil)
@directories[name] = directory ? directory : Directory.new
end
def [](name)
@directories[name] || @files[name]
end
def serialize
result = "#{files.size}:"
files.each do |name, _|
result ="#{result}#{name}:#{self[name].serialize.size}:#{self[name].serialize}"
end
result = "#{result}#{directories.size}:"
directories.each do |name, _|
result = "#{result}#{name}:#{self[name].serialize.size}:#{self[name].serialize}"
end
result
end
def self.parse(string_data)
file_count = string_data.split(':', 2).first.to_i
root = Directory.new
string_data = string_data.split(':', 2)[1]
serialized_files = serialize_files(root, string_data, file_count)
directories_count = serialized_files.split(':', 2).first.to_i
string_data = serialized_files.split(':', 2)[1]
string_data = serialize_directories(root, string_data, directories_count)
root
end
def self.serialize_files(root, string_data, file_count)
1.upto(file_count) do
file_name = string_data.split(':', 2).first
file_size = string_data.split(':', 3)[1]
file_data = string_data.split(':', 3)[2][0, file_size.to_i]
root.add_file(file_name, File.parse(file_data))
string_data = string_data.split(':', 3)[2].slice(file_size.to_i,string_data
.split(':', 4)[3].size)
end
string_data
end
def self.serialize_directories(root, string_data, directories_count)
1.upto(directories_count) do
directory_name = string_data.split(':', 2).first
directory_size = string_data.split(':', 3)[1]
string_data = string_data.split(':', 3)[2][0, directory_size.to_i]
root.add_directory(directory_name, Directory.parse(string_data))
end
string_data
end
end
end

Лог от изпълнението

............FF..............................

Failures:

  1) RBFS Directory serialization ::parse can parse directory trees without files
     Failure/Error: parsed_directory = RBFS::Directory.parse('0:2:dir1:15:0:1:dir2:4:0:0:dir3:4:0:0:')
     NoMethodError:
       undefined method `split' for nil:NilClass
     # /tmp/d20141111-26053-3pnc6k/solution.rb:98:in `parse'
     # /tmp/d20141111-26053-3pnc6k/solution.rb:121:in `block in serialize_directories'
     # /tmp/d20141111-26053-3pnc6k/solution.rb:117:in `upto'
     # /tmp/d20141111-26053-3pnc6k/solution.rb:117:in `serialize_directories'
     # /tmp/d20141111-26053-3pnc6k/solution.rb:100:in `parse'
     # /tmp/d20141111-26053-3pnc6k/spec.rb:117:in `block (5 levels) in <top (required)>'
     # ./lib/language/ruby/run_with_timeout.rb:5:in `block (3 levels) in <top (required)>'
     # ./lib/language/ruby/run_with_timeout.rb:5:in `block (2 levels) in <top (required)>'

  2) RBFS Directory serialization ::parse can parse directories recursively
     Failure/Error: parsed_directory = RBFS::Directory.parse(recursive_serialized_string)
     NoMethodError:
       undefined method `split' for nil:NilClass
     # /tmp/d20141111-26053-3pnc6k/solution.rb:98:in `parse'
     # /tmp/d20141111-26053-3pnc6k/solution.rb:121:in `block in serialize_directories'
     # /tmp/d20141111-26053-3pnc6k/solution.rb:117:in `upto'
     # /tmp/d20141111-26053-3pnc6k/solution.rb:117:in `serialize_directories'
     # /tmp/d20141111-26053-3pnc6k/solution.rb:100:in `parse'
     # /tmp/d20141111-26053-3pnc6k/spec.rb:125:in `block (5 levels) in <top (required)>'
     # ./lib/language/ruby/run_with_timeout.rb:5:in `block (3 levels) in <top (required)>'
     # ./lib/language/ruby/run_with_timeout.rb:5:in `block (2 levels) in <top (required)>'

Finished in 0.04345 seconds
44 examples, 2 failures

Failed examples:

rspec /tmp/d20141111-26053-3pnc6k/spec.rb:116 # RBFS Directory serialization ::parse can parse directory trees without files
rspec /tmp/d20141111-26053-3pnc6k/spec.rb:124 # RBFS Directory serialization ::parse can parse directories recursively

История (1 версия и 0 коментара)

Деян обнови решението на 10.11.2014 16:10 (преди около 10 години)

+module RBFS
+ class File
+ attr_reader :data_type, :data
+
+ def initialize(data = nil)
+ @data = data
+ @data_type = get_type_as_symbol(data)
+ end
+
+ def data=(data = nil)
+ @data = data
+ @data_type = get_type_as_symbol(data)
+ end
+
+ def serialize
+ data_type.to_s + ':' + data.to_s
+ end
+
+ def self.parse(string_data)
+ type_data_pair = string_data.split(':', 2)
+ actual_data = get_data_from(type_data_pair[0].to_sym, type_data_pair[1])
+ File.new(actual_data)
+ end
+
+ private
+
+ def get_type_as_symbol(data_type)
+ result_type = data_type.class.name.downcase.to_sym
+ case result_type
+ when :nilclass then :nil
+ when :falseclass, :trueclass then :boolean
+ when :fixnum, :float then :number
+ else result_type
+ end
+ end
+
+ def self.to_boolean(string)
+ return true if string == 'true'
+ false if string == 'false'
+ end
+
+ def self.to_number(string)
+ if string.include? '.'
+ string.to_f
+ else
+ string.to_i
+ end
+ end
+
+ def self.get_data_from(type, data)
+ case type
+ when :boolean then to_boolean(data)
+ when :symbol then data.to_sym
+ when :nil then nil
+ when :number then to_number(data)
+ when :string then data
+ end
+ end
+ end
+
+ class Directory
+ attr_reader :files, :directories
+
+ def initialize
+ @files = {}
+ @directories = {}
+ end
+
+ def add_file(name, file)
+ @files[name] = file
+ end
+
+ def add_directory(name, directory = nil)
+ @directories[name] = directory ? directory : Directory.new
+ end
+
+ def [](name)
+ @directories[name] || @files[name]
+ end
+
+ def serialize
+ result = "#{files.size}:"
+ files.each do |name, _|
+ result ="#{result}#{name}:#{self[name].serialize.size}:#{self[name].serialize}"
+ end
+ result = "#{result}#{directories.size}:"
+ directories.each do |name, _|
+ result = "#{result}#{name}:#{self[name].serialize.size}:#{self[name].serialize}"
+ end
+ result
+ end
+
+ def self.parse(string_data)
+ file_count = string_data.split(':', 2).first.to_i
+ root = Directory.new
+ string_data = string_data.split(':', 2)[1]
+ serialized_files = serialize_files(root, string_data, file_count)
+ directories_count = serialized_files.split(':', 2).first.to_i
+ string_data = serialized_files.split(':', 2)[1]
+ string_data = serialize_directories(root, string_data, directories_count)
+ root
+ end
+
+ def self.serialize_files(root, string_data, file_count)
+ 1.upto(file_count) do
+ file_name = string_data.split(':', 2).first
+ file_size = string_data.split(':', 3)[1]
+ file_data = string_data.split(':', 3)[2][0, file_size.to_i]
+ root.add_file(file_name, File.parse(file_data))
+ string_data = string_data.split(':', 3)[2].slice(file_size.to_i,string_data
+ .split(':', 4)[3].size)
+ end
+ string_data
+ end
+
+ def self.serialize_directories(root, string_data, directories_count)
+ 1.upto(directories_count) do
+ directory_name = string_data.split(':', 2).first
+ directory_size = string_data.split(':', 3)[1]
+ string_data = string_data.split(':', 3)[2][0, directory_size.to_i]
+ root.add_directory(directory_name, Directory.parse(string_data))
+ end
+ string_data
+ end
+ end
+end