class Bundler::Plugin::Index

# 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

# File lib/bundler/plugin/index.rb, line 95
def command_plugin(command)
  @commands[command]
end

# File lib/bundler/plugin/index.rb, line 77
def global_index_file
  Plugin.global_root.join("index")
end

# File lib/bundler/plugin/index.rb, line 112
def hook_plugins(event)
  @hooks[event] || []
end

# File lib/bundler/plugin/index.rb, line 72
def index_file
  Plugin.root.join("index")
end

# File lib/bundler/plugin/index.rb, line 99
def installed?(name)
  @plugin_paths[name]
end

# File lib/bundler/plugin/index.rb, line 90
def load_paths(name)
  @load_paths[name]
end

# File lib/bundler/plugin/index.rb, line 82
def local_index_file
  Plugin.local_root.join("index")
end

# File lib/bundler/plugin/index.rb, line 86
def plugin_path(name)
  Pathname.new @plugin_paths[name]
end

# 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 {|e| (@hooks[e] ||= []) << name }

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

# File lib/bundler/plugin/index.rb, line 103
def source?(source)
  @sources.key? source
end

# File lib/bundler/plugin/index.rb, line 107
def source_plugin(name)
  @sources[name]
end

# File lib/bundler/plugin/index.rb, line 124
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 "bundler/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

# File lib/bundler/plugin/index.rb, line 145
def save_index
  index = {
    "commands"     => @commands,
    "hooks"        => @hooks,
    "load_paths"   => @load_paths,
    "plugin_paths" => @plugin_paths,
    "sources"      => @sources,
  }

  require "bundler/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