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Class: Bundler::Plugin::Index

Relationships & Source Files
Namespace Children
Exceptions:
CommandConflict, SourceConflict
Inherits: Object
Defined in: lib/bundler/plugin/index.rb

Class Method Summary

Instance Attribute Summary

Instance Method Summary

Constructor Details

.new ⇒ Index

[ GitHub ] 

  


# File 'lib/bundler/plugin/index.rb', line 25



def initialize
  @plugin_paths = {}
  @commands = {}
  @sources = {}
  @hooks = {}
  @load_paths = {}

  begin
    load_index(global_index_file, true)
  rescue GenericSystemCallError
    # no need to fail when on a read-only FS, for example
    nil
  end
  load_index(local_index_file) if SharedHelpers.in_bundle?
end


  







Instance Attribute Details



  

    #commands   (readonly)
  

  [ GitHub ]


  

  


# File 'lib/bundler/plugin/index.rb', line 23



attr_reader :commands


  







Instance Method Details



  

    #command_plugin(command)  
  



  

    

Fetch the name of plugin handling the command


  



  [ GitHub ]


  

  


# File 'lib/bundler/plugin/index.rb', line 110



def command_plugin(command)
  @commands[command]
end


  








  

    #global_index_file  
  



  

    

Path where the global index file is stored


  



  [ GitHub ]


  

  


# File 'lib/bundler/plugin/index.rb', line 92



def global_index_file
  Plugin.global_root.join("index")
end


  








  

    #hook_plugins(event)  
  



  

    

Returns the list of plugin names handling the passed event


  



  [ GitHub ]


  

  


# File 'lib/bundler/plugin/index.rb', line 135



def hook_plugins(event)
  @hooks[event] || []
end


  








  

    #index_file  
  



  

    

Path of default index file


  



  [ GitHub ]


  

  


# File 'lib/bundler/plugin/index.rb', line 87



def index_file
  Plugin.root.join("index")
end


  








  

    #installed?(name)  ⇒ Boolean 
  



  

    
  





  


  [ GitHub ]


  

  


# File 'lib/bundler/plugin/index.rb', line 114



def installed?(name)
  @plugin_paths[name]
end


  








  

    #installed_plugins  
  

  [ GitHub ]


  

  


# File 'lib/bundler/plugin/index.rb', line 118



def installed_plugins
  @plugin_paths.keys
end


  








  

    #load_index(index_file, global = false)   (private)
  



  

    

Reads the index file from the directory and initializes the instance variables.



It skips the sources if the second param is true


  





  
Parameters:


    
  
  • 
    index
    (Pathname)
—    
    

    file path
    

    
  
    • 
  
  • 
    is
    (Boolean)
—    
    

    the index file global index
    

    
  
    • 





  [ GitHub ]


  

  


# File 'lib/bundler/plugin/index.rb', line 147



def load_index(index_file, global = false)
  SharedHelpers.filesystem_access(index_file, :read) do |index_f|
    valid_file = index_f && index_f.exist? && !index_f.size.zero?
    break unless valid_file

    data = index_f.read

    require_relative "../yaml_serializer"
    index = YAMLSerializer.load(data)

    @commands.merge!(index["commands"])
    @hooks.merge!(index["hooks"])
    @load_paths.merge!(index["load_paths"])
    @plugin_paths.merge!(index["plugin_paths"])
    @sources.merge!(index["sources"]) unless global
  end
end


  








  

    #load_paths(name)  
  

  [ GitHub ]


  

  


# File 'lib/bundler/plugin/index.rb', line 105



def load_paths(name)
  @load_paths[name]
end


  








  

    #local_index_file  
  



  

    

Path where the local index file is stored


  



  [ GitHub ]


  

  


# File 'lib/bundler/plugin/index.rb', line 97



def local_index_file
  Plugin.local_root.join("index")
end


  








  

    #plugin_commands(plugin)  
  

  [ GitHub ]


  

  


# File 'lib/bundler/plugin/index.rb', line 122



def plugin_commands(plugin)
  @commands.find_all {|_, n| n == plugin }.map(&:first)
end


  








  

    #plugin_path(name)  
  

  [ GitHub ]


  

  


# File 'lib/bundler/plugin/index.rb', line 101



def plugin_path(name)
  Pathname.new @plugin_paths[name]
end


  








  

    #register_plugin(name, path, load_paths, commands, sources, hooks)  
  



  

    

This function is to be called when a new plugin is installed. This function shall add the functions of the plugin to existing maps and also the name to source location.


  





  
Parameters:


    
  
  • 
    name
    (String)
—    
    

    of the plugin to be registered
    

    
  
    • 
  
  • 
    path
    (String)
—    
    

    where the plugin is installed
    

    
  
    • 
  
  • 
    load_paths
    (Array<String>)
—    
    

    for the plugin
    

    
  
    • 
  
  • 
    commands
    (Array<String>)
—    
    

    that are handled by the plugin
    

    
  
    • 
  
  • 
    sources
    (Array<String>)
—    
    

    that are handled by the plugin
    

    
  
    • 





  [ GitHub ]


  

  


# File 'lib/bundler/plugin/index.rb', line 50



def register_plugin(name, path, load_paths, commands, sources, hooks)
  old_commands = @commands.dup

  common = commands & @commands.keys
  raise CommandConflict.new(name, common) unless common.empty?
  commands.each {|c| @commands[c] = name }

  common = sources & @sources.keys
  raise SourceConflict.new(name, common) unless common.empty?
  sources.each {|k| @sources[k] = name }

  hooks.each do |event|
    event_hooks = (@hooks[event] ||= []) << name
    event_hooks.uniq!
  end

  @plugin_paths[name] = path
  @load_paths[name] = load_paths
  save_index
rescue StandardError
  @commands = old_commands
  raise
end


  








  

    #save_index   (private)
  



  

    

Should be called when any of the instance variables change. Stores the instance variables in YAML format. (The instance variables are supposed to be only String key value pairs)


  



  [ GitHub ]


  

  


# File 'lib/bundler/plugin/index.rb', line 168



def save_index
  index = {
    "commands"     => @commands,
    "hooks"        => @hooks,
    "load_paths"   => @load_paths,
    "plugin_paths" => @plugin_paths,
    "sources"      => @sources,
  }

  require_relative "../yaml_serializer"
  SharedHelpers.filesystem_access(index_file) do |index_f|
    FileUtils.mkdir_p(index_f.dirname)
    File.open(index_f, "w") {|f| f.puts YAMLSerializer.dump(index) }
  end
end


  








  

    #source?(source)  ⇒ Boolean 
  



  

    
  





  


  [ GitHub ]


  

  


# File 'lib/bundler/plugin/index.rb', line 126



def source?(source)
  @sources.key? source
end


  








  

    #source_plugin(name)  
  

  [ GitHub ]


  

  


# File 'lib/bundler/plugin/index.rb', line 130



def source_plugin(name)
  @sources[name]
end


  








  

    #unregister_plugin(name)  
  

  [ GitHub ]


  

  


# File 'lib/bundler/plugin/index.rb', line 74



def unregister_plugin(name)
  @commands.delete_if {|_, v| v == name }
  @sources.delete_if {|_, v| v == name }
  @hooks.each do |hook, names|
    names.delete(name)
    @hooks.delete(hook) if names.empty?
  end
  @plugin_paths.delete(name)
  @load_paths.delete(name)
  save_index
end