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Module: Bundler::Thor::Util

Relationships & Source Files
Defined in: lib/bundler/vendor/thor/lib/thor/util.rb

Overview

This module holds several utilities:

1) Methods to convert thor namespaces to constants and vice-versa.

Bundler::Thor::Util.namespace_from_thor_class(Foo::Bar::Baz) #=> "foo:bar:baz"

2) Loading thor files and sandboxing:

Bundler::Thor::Util.load_thorfile("~/.thor/foo")

Class Method Summary

Class Method Details

.camel_case(str)

Receives a string and convert it to camel case. camel_case returns CamelCase.

Parameters

String

Returns

String

[ GitHub ] 

  


# File 'lib/bundler/vendor/thor/lib/thor/util.rb', line 104



def camel_case(str)
  return str if str !~ /_/ && str =~ /[A-Z]+.*/
  str.split("_").map(&:capitalize).join
end


  








  

    .escape_globs(path)  
  



  

    

Returns a string that has had any glob characters escaped. The glob characters are * ? { } [ ].



Examples



Bundler::Thor::Util.escape_globs('[apps]')   # => '\[apps\]'



Parameters



String



Returns



String


  



  [ GitHub ]


  

  


# File 'lib/bundler/vendor/thor/lib/thor/util.rb', line 263



def escape_globs(path)
  path.to_s.gsub(/[*?{}\[\]]/, '\\\\\\&')
end


  








  

    .escape_html(string)  
  



  

    

Returns a string that has had any HTML characters escaped.



Examples



Bundler::Thor::Util.escape_html('<div>')   # => "&lt;div&gt;"



Parameters



String



Returns



String


  



  [ GitHub ]


  

  


# File 'lib/bundler/vendor/thor/lib/thor/util.rb', line 279



def escape_html(string)
  CGI.escapeHTML(string)
end


  








  

    .find_by_namespace(namespace)  
  



  

    

Receives a namespace and search for it in the Base subclasses.



Parameters


namespace<String>



The namespace to search for.




  



  [ GitHub ]


  

  


# File 'lib/bundler/vendor/thor/lib/thor/util.rb', line 24



def find_by_namespace(namespace)
  namespace = "default#{namespace}" if namespace.empty? || namespace =~ /^:/
  Bundler::Thor::Base.subclasses.detect { |klass| klass.namespace == namespace }
end


  








  

    .find_class_and_command_by_namespace(namespace, fallback = true)  
    Also known as: .find_class_and_task_by_namespace
  



  

    

Receives a namespace and tries to retrieve a ::Bundler::Thor or Group class from it. It first searches for a class using the all the given namespace, if it’s not found, removes the highest entry and searches for the class again. If found, returns the highest entry as the class name.



Examples



class Foo::Bar < Bundler::Thor
  def baz
  end
end

class Baz::Foo < Bundler::Thor::Group
end

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



Parameters



namespace<String>


  



  [ GitHub ]


  

  


# File 'lib/bundler/vendor/thor/lib/thor/util.rb', line 131



def find_class_and_command_by_namespace(namespace, fallback = true)
  if namespace.include?(":") # look for a namespaced command
    pieces  = namespace.split(":")
    command = pieces.pop
    klass   = Bundler::Thor::Util.find_by_namespace(pieces.join(":"))
  end
  unless klass # look for a Bundler::Thor::Group with the right name
    klass = Bundler::Thor::Util.find_by_namespace(namespace)
    command = nil
  end
  if !klass && fallback # try a command in the default namespace
    command = namespace
    klass   = Bundler::Thor::Util.find_by_namespace("")
  end
  [klass, command]
end


  








  

    .find_class_and_task_by_namespace(namespace, fallback = true)  
  



  

    

Alias for .find_class_and_command_by_namespace.


  



  [ GitHub ]


  

  


# File 'lib/bundler/vendor/thor/lib/thor/util.rb', line 147



alias_method :find_class_and_task_by_namespace, :find_class_and_command_by_namespace


  








  

    .globs_for(path)  
  



  

    

Where to look for ::Bundler::Thor files.


  



  [ GitHub ]


  

  


# File 'lib/bundler/vendor/thor/lib/thor/util.rb', line 212



def globs_for(path)
  path = escape_globs(path)
  ["#{path}/Thorfile", "#{path}/*.thor", "#{path}/tasks/*.thor", "#{path}/lib/tasks/**/*.thor"]
end


  








  

    .load_thorfile(path, content = nil, debug = false)  
  



  

    

Receives a path and load the thor file in the path. The file is evaluated inside the sandbox to avoid namespacing conflicts.


  



  [ GitHub ]


  

  


# File 'lib/bundler/vendor/thor/lib/thor/util.rb', line 152



def load_thorfile(path, content = nil, debug = false)
  content ||= File.binread(path)

  begin
    Bundler::Thor::Sandbox.class_eval(content, path)
  rescue StandardError => e
    $stderr.puts("WARNING: unable to load thorfile #{path.inspect}: #{e.message}")
    if debug
      $stderr.puts(*e.backtrace)
    else
      $stderr.puts(e.backtrace.first)
    end
  end
end


  








  

    .namespace_from_thor_class(constant)  
  



  

    

Receives a constant and converts it to a ::Bundler::Thor namespace. Since ::Bundler::Thor commands can be added to a sandbox, this method is also responsible for removing the sandbox namespace.



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



Parameters


constant<Object>



The constant to be converted to the thor path.





Returns


String



If we receive Foo::Bar::Baz it returns “foo:bar:baz”




  



  [ GitHub ]


  

  


# File 'lib/bundler/vendor/thor/lib/thor/util.rb', line 43



def namespace_from_thor_class(constant)
  constant = constant.to_s.gsub(/^Bundler::Thor::Sandbox::/, "")
  constant = snake_case(constant).squeeze(":")
  constant
end


  








  

    .namespaces_in_content(contents, file = __FILE__)  
  



  

    

Given the contents, evaluate it inside the sandbox and returns the namespaces defined in the sandbox.



Parameters



contents<String>



Returns



Array


  



  [ GitHub ]


  

  


# File 'lib/bundler/vendor/thor/lib/thor/util.rb', line 58



def namespaces_in_content(contents, file = __FILE__)
  old_constants = Bundler::Thor::Base.subclasses.dup
  Bundler::Thor::Base.subclasses.clear

  load_thorfile(file, contents)

  new_constants = Bundler::Thor::Base.subclasses.dup
  Bundler::Thor::Base.subclasses.replace(old_constants)

  new_constants.map!(&:namespace)
  new_constants.compact!
  new_constants
end


  








  

    .ruby_command  
  



  

    

Return the path to the ruby interpreter taking into account multiple installations and windows extensions.


  



  [ GitHub ]


  

  


# File 'lib/bundler/vendor/thor/lib/thor/util.rb', line 220



def ruby_command
  @ruby_command ||= begin
    ruby_name = RbConfig::CONFIG["ruby_install_name"]
    ruby = File.join(RbConfig::CONFIG["bindir"], ruby_name)
    ruby << RbConfig::CONFIG["EXEEXT"]

    # avoid using different name than ruby (on platforms supporting links)
    if ruby_name != "ruby" && File.respond_to?(:readlink)
      begin
        alternate_ruby = File.join(RbConfig::CONFIG["bindir"], "ruby")
        alternate_ruby << RbConfig::CONFIG["EXEEXT"]

        # ruby is a symlink
        if File.symlink? alternate_ruby
          linked_ruby = File.readlink alternate_ruby

          # symlink points to 'ruby_install_name'
          ruby = alternate_ruby if linked_ruby == ruby_name || linked_ruby == ruby
        end
      rescue NotImplementedError # rubocop:disable HandleExceptions
        # just ignore on windows
      end
    end

    # escape string in case path to ruby executable contain spaces.
    ruby.sub!(/.*\s.*/m, '"\&"')
    ruby
  end
end


  








  

    .snake_case(str)  
  



  

    

Receives a string and convert it to snake case. SnakeCase returns snake_case.



Parameters



String



Returns



String


  



  [ GitHub ]


  

  


# File 'lib/bundler/vendor/thor/lib/thor/util.rb', line 90



def snake_case(str)
  return str.downcase if str =~ /^[A-Z_]+$/
  str.gsub(/\B[A-Z]/, '_\&').squeeze("_") =~ /_*(.*)/
  $+.downcase
end


  








  

    .thor_classes_in(klass)  
  



  

    

Returns the thor classes declared inside the given class.


  



  [ GitHub ]


  

  


# File 'lib/bundler/vendor/thor/lib/thor/util.rb', line 74



def thor_classes_in(klass)
  stringfied_constants = klass.constants.map(&:to_s)
  Bundler::Thor::Base.subclasses.select do |subclass|
    next unless subclass.name
    stringfied_constants.include?(subclass.name.gsub("#{klass.name}::", ""))
  end
end


  








  

    .thor_root  
  



  

    

Returns the root where thor files are located, depending on the OS.


  



  [ GitHub ]


  

  


# File 'lib/bundler/vendor/thor/lib/thor/util.rb', line 191



def thor_root
  File.join(user_home, ".thor").tr('\\', "/")
end


  








  

    .thor_root_glob  
  



  

    

Returns the files in the thor root. On Windows thor_root will be something like this:



C:\Documents and Settings\james\.thor



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


  



  [ GitHub ]


  

  


# File 'lib/bundler/vendor/thor/lib/thor/util.rb', line 202



def thor_root_glob
  files = Dir["#{escape_globs(thor_root)}/*"]

  files.map! do |file|
    File.directory?(file) ? File.join(file, "main.thor") : file
  end
end


  








  

    .user_home  
  

  [ GitHub ]


  

  


# File 'lib/bundler/vendor/thor/lib/thor/util.rb', line 167



def 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