module Thor::Util

def self.camel_case(str)


String
==== Returns

String
==== Parameters

Receives a string and convert it to camel case. camel_case returns CamelCase. 
def self.camel_case(str)
  return str if str !~ /_/ && str =~ /[A-Z]+.*/
  str.split('_').map { |i| i.capitalize }.join
end

def self.convert_constants_to_namespaces(yaml)


TrueClass|FalseClass:: Returns true if any change to the yaml file was made.
==== Returns

TODO Deprecate this method in the future.

This was added to deal with deprecated versions of Thor.
Receives a yaml (hash) and updates all constants entries to namespace. 
def self.convert_constants_to_namespaces(yaml)
  yaml_changed = false
  yaml.each do |k, v|
    next unless v[:constants] && v[:namespaces].nil?
    yaml_changed = true
    yaml[k][:namespaces] = v[:constants].map{|c| Thor::Util.namespace_from_thor_class(c)}
  end
  yaml_changed
end

def self.find_by_namespace(namespace)


namespace:: The namespace to search for.
==== Parameters

Receives a namespace and search for it in the Thor::Base subclasses. 
def self.find_by_namespace(namespace)
  namespace = "default#{namespace}" if namespace.empty? || namespace =~ /^:/
  Thor::Base.subclasses.find do |klass|
    klass.namespace == namespace
  end
end

def self.globs_for(path)


Where to look for Thor files. 
def self.globs_for(path)
  ["#{path}/Thorfile", "#{path}/*.thor", "#{path}/tasks/*.thor", "#{path}/lib/tasks/*.thor"]
end

def self.load_thorfile(path, content=nil)


inside the sandbox to avoid namespacing conflicts.
Receives a path and load the thor file in the path. The file is evaluated 
def self.load_thorfile(path, content=nil)
  content ||= File.read(path)
  begin
    Thor::Sandbox.class_eval(content, path)
  rescue Exception => e
    $stderr.puts "WARNING: unable to load thorfile #{path.inspect}: #{e.message}"
  end
end

def self.namespace_from_thor_class(constant, remove_default=true)


String:: If we receive Foo::Bar::Baz it returns "foo:bar:baz"
==== Returns

constant:: The constant to be converted to the thor path.
==== Parameters

namespace from a class, just call namespace on it.
older versions of Thor. On current versions, if you need to get the
This method should not be used in general because it's used to deal with

the sandbox namespace.
can be added to a sandbox, this method is also responsable for removing
Receives a constant and converts it to a Thor namespace. Since Thor tasks 
def self.namespace_from_thor_class(constant, remove_default=true)
  constant = constant.to_s.gsub(/^Thor::Sandbox::/, "")
  constant = snake_case(constant).squeeze(":")
  constant.gsub!(/^default/, '') if remove_default
  constant
end

def self.namespace_to_thor_class_and_task(namespace, raise_if_nil=true)


inherit from Thor or Thor::Group.
Thor::Error:: raised if the namespace evals to a class which does not

Thor::Error:: raised if the namespace cannot be found.
==== Errors

namespace
==== Parameters

Thor::Util.namespace_to_thor_class("foo:bar:baz") #=> Foo::Bar, "baz"
Thor::Util.namespace_to_thor_class("baz:foo") #=> Baz::Foo, nil
Thor::Util.namespace_to_thor_class("foo:bar") #=> Foo::Bar, nil # will invoke default task

end
class Baz::Foo < Thor::Group

end
end
def baz
class Foo::Bar < Thor

==== Examples

again. If found, returns the highest entry as the class name.
if it's not found, removes the highest entry and searches for the class
from it. It first searches for a class using the all the given namespace,
Receives a namespace and tries to retrieve a Thor or Thor::Group class 
def self.namespace_to_thor_class_and_task(namespace, raise_if_nil=true)
  klass, task_name = Thor::Util.find_by_namespace(namespace), nil
  if klass.nil? && namespace.include?(?:)
    namespace = namespace.split(":")
    task_name = namespace.pop
    klass     = Thor::Util.find_by_namespace(namespace.join(":"))
  end
  raise Error, "could not find Thor class or task '#{namespace}'" if raise_if_nil && klass.nil?
  return klass, task_name
end

def self.namespaces_in_content(contents, file=__FILE__)


Array[Object]
==== Returns

contents
==== Parameters

namespaces defined in the sandbox.
Given the contents, evaluate it inside the sandbox and returns the 
def self.namespaces_in_content(contents, file=__FILE__)
  old_constants = Thor::Base.subclasses.dup
  Thor::Base.subclasses.clear
  load_thorfile(file, contents)
  new_constants = Thor::Base.subclasses.dup
  Thor::Base.subclasses.replace(old_constants)
  new_constants.map!{ |c| c.namespace }
  new_constants.compact!
  new_constants
end

def self.ruby_command


installations and windows extensions.
Return the path to the ruby interpreter taking into account multiple 
def self.ruby_command
  @ruby_command ||= begin
    ruby = File.join(Config::CONFIG['bindir'], Config::CONFIG['ruby_install_name'])
    ruby << Config::CONFIG['EXEEXT']
    # escape string in case path to ruby executable contain spaces.
    ruby.sub!(/.*\s.*/m, '"\&"')
    ruby
  end
end

def self.snake_case(str)


String
==== Returns

String
==== Parameters

Receives a string and convert it to snake case. SnakeCase returns snake_case. 
def self.snake_case(str)
  return str.downcase if str =~ /^[A-Z_]+$/
  str.gsub(/\B[A-Z]/, '_\&').squeeze('_') =~ /_*(.*)/
  return $+.downcase
end

def self.thor_classes_in(klass)


Returns the thor classes declared inside the given class. 
def self.thor_classes_in(klass)
  Thor::Base.subclasses.select do |subclass|
    klass.constants.include?(subclass.name.gsub("#{klass.name}::", ''))
  end
end

def self.thor_root


Returns the root where thor files are located, dependending on the OS. 
def self.thor_root
  File.join(user_home, ".thor")
end

def self.thor_root_glob


If we don't #gsub the \ character, Dir.glob will fail.

C:\Documents and Settings\james\.thor

like this:
Returns the files in the thor root. On Windows thor_root will be something 
def self.thor_root_glob
  files = Dir["#{thor_root.gsub(/\\/, '/')}/*"]
  files.map! do |file|
    File.directory?(file) ? File.join(file, "main.thor") : file
  end
end

def self.user_home 

def self.user_home
  @@user_home ||= if ENV["HOME"]
    ENV["HOME"]
  elsif ENV["USERPROFILE"]
    ENV["USERPROFILE"]
  elsif ENV["HOMEDRIVE"] && ENV["HOMEPATH"]
    File.join(ENV["HOMEDRIVE"], ENV["HOMEPATH"])
  elsif ENV["APPDATA"]
    ENV["APPDATA"]
  else
    begin
      File.expand_path("~")
    rescue
      if File::ALT_SEPARATOR
        "C:/"
      else
        "/"
      end
    end
  end
end