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:
/
proc
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self
/
root
/
opt
/
alt
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ruby26
/
lib64
/
ruby
/
2.6.0
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bundler
/
plugin
/
Filename :
index.rb
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# frozen_string_literal: true module Bundler # Manages which plugins are installed and their sources. This also is supposed to map # which plugin does what (currently the features are not implemented so this class is # now a stub class). module Plugin class Index class CommandConflict < PluginError def initialize(plugin, commands) msg = "Command(s) `#{commands.join("`, `")}` declared by #{plugin} are already registered." super msg end end class SourceConflict < PluginError def initialize(plugin, sources) msg = "Source(s) `#{sources.join("`, `")}` declared by #{plugin} are already registered." super msg end end attr_reader :commands 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 # 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. # # @param [String] name of the plugin to be registered # @param [String] path where the plugin is installed # @param [Array<String>] load_paths for the plugin # @param [Array<String>] commands that are handled by the plugin # @param [Array<String>] sources that are handled by the plugin 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 # Path of default index file def index_file Plugin.root.join("index") end # Path where the global index file is stored def global_index_file Plugin.global_root.join("index") end # Path where the local index file is stored def local_index_file Plugin.local_root.join("index") end def plugin_path(name) Pathname.new @plugin_paths[name] end def load_paths(name) @load_paths[name] end # Fetch the name of plugin handling the command def command_plugin(command) @commands[command] end def installed?(name) @plugin_paths[name] end def source?(source) @sources.key? source end def source_plugin(name) @sources[name] end # Returns the list of plugin names handling the passed event def hook_plugins(event) @hooks[event] || [] end private # Reads the index file from the directory and initializes the instance # variables. # # It skips the sources if the second param is true # @param [Pathname] index file path # @param [Boolean] is the index file global index 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 # 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) 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 end end end