require 'optparse' require 'yaml' require 'rdoc/ri' require 'rdoc/ri/paths' require 'rdoc/ri/formatter' require 'rdoc/ri/display' require 'fileutils' require 'rdoc/markup' require 'rdoc/markup/to_flow' class RDoc::RI::Driver def self.process_args(argv) options = {} options[:use_stdout] = !$stdout.tty? options[:width] = 72 options[:formatter] = RDoc::RI::Formatter.for 'plain' options[:list_classes] = false options[:list_names] = false # By default all paths are used. If any of these are true, only those # directories are used. use_system = false use_site = false use_home = false use_gems = false doc_dirs = [] opts = OptionParser.new do |opt| opt.program_name = File.basename $0 opt.version = RDoc::VERSION opt.summary_indent = ' ' * 4 directories = [ RDoc::RI::Paths::SYSDIR, RDoc::RI::Paths::SITEDIR, RDoc::RI::Paths::HOMEDIR ] if RDoc::RI::Paths::GEMDIRS then Gem.path.each do |dir| directories << "#{dir}/doc/*/ri" end end opt.banner = <<-EOT Usage: #{opt.program_name} [options] [names...] Where name can be: Class | Class::method | Class#method | Class.method | method All class names may be abbreviated to their minimum unambiguous form. If a name is ambiguous, all valid options will be listed. The form '.' method matches either class or instance methods, while #method matches only instance and ::method matches only class methods. For example: #{opt.program_name} Fil #{opt.program_name} File #{opt.program_name} File.new #{opt.program_name} zip Note that shell quoting may be required for method names containing punctuation: #{opt.program_name} 'Array.[]' #{opt.program_name} compact\\! By default ri searches for documentation in the following directories: #{directories.join "\n "} Specifying the --system, --site, --home, --gems or --doc-dir options will limit ri to searching only the specified directories. Options may also be set in the 'RI' environment variable. EOT opt.separator nil opt.separator "Options:" opt.separator nil opt.on("--classes", "-c", "Display the names of classes and modules we", "know about.") do |value| options[:list_classes] = value end opt.separator nil opt.on("--doc-dir=DIRNAME", "-d", Array, "List of directories to search for", "documentation. If not specified, we search", "the standard rdoc/ri directories. May be", "repeated.") do |value| value.each do |dir| unless File.directory? dir then raise OptionParser::InvalidArgument, "#{dir} is not a directory" end end doc_dirs.concat value end opt.separator nil opt.on("--fmt=FORMAT", "--format=FORMAT", "-f", RDoc::RI::Formatter::FORMATTERS.keys, "Format to use when displaying output:", " #{RDoc::RI::Formatter.list}", "Use 'bs' (backspace) with most pager", "programs. To use ANSI, either disable the", "pager or tell the pager to allow control", "characters.") do |value| options[:formatter] = RDoc::RI::Formatter.for value end opt.separator nil unless RDoc::RI::Paths::GEMDIRS.empty? then opt.on("--[no-]gems", "Include documentation from RubyGems.") do |value| use_gems = value end end opt.separator nil opt.on("--[no-]home", "Include documentation stored in ~/.rdoc.") do |value| use_home = value end opt.separator nil opt.on("--[no-]list-names", "-l", "List all the names known to RDoc, one per", "line.") do |value| options[:list_names] = value end opt.separator nil opt.on("--no-pager", "-T", "Send output directly to stdout.") do |value| options[:use_stdout] = !value end opt.separator nil opt.on("--[no-]site", "Include documentation from libraries", "installed in site_lib.") do |value| use_site = value end opt.separator nil opt.on("--[no-]system", "Include documentation from Ruby's standard", "library.") do |value| use_system = value end opt.separator nil opt.on("--width=WIDTH", "-w", OptionParser::DecimalInteger, "Set the width of the output.") do |value| options[:width] = value end end argv = ENV['RI'].to_s.split.concat argv opts.parse! argv options[:names] = argv options[:path] = RDoc::RI::Paths.path(use_system, use_site, use_home, use_gems, *doc_dirs) options[:raw_path] = RDoc::RI::Paths.raw_path(use_system, use_site, use_home, use_gems, *doc_dirs) options rescue OptionParser::InvalidArgument, OptionParser::InvalidOption => e puts opts puts puts e exit 1 end def self.run(argv = ARGV) options = process_args argv ri = new options ri.run end def initialize(options={}) options[:formatter] ||= RDoc::RI::Formatter.for('plain') options[:use_stdout] ||= !$stdout.tty? options[:width] ||= 72 @names = options[:names] @class_cache_name = 'classes' @all_dirs = RDoc::RI::Paths.path(true, true, true, true) @homepath = RDoc::RI::Paths.raw_path(false, false, true, false).first @homepath = @homepath.sub(/\.rdoc/, '.ri') @sys_dirs = RDoc::RI::Paths.raw_path(true, false, false, false) FileUtils.mkdir_p cache_file_path unless File.directory? cache_file_path @class_cache = nil @display = RDoc::RI::DefaultDisplay.new(options[:formatter], options[:width], options[:use_stdout]) end def class_cache return @class_cache if @class_cache newest = map_dirs('created.rid', :all) do |f| File.mtime f if test ?f, f end.max up_to_date = (File.exist?(class_cache_file_path) and newest and newest < File.mtime(class_cache_file_path)) @class_cache = if up_to_date then load_cache_for @class_cache_name else class_cache = {} classes = map_dirs('**/cdesc*.yaml', :sys) { |f| Dir[f] } populate_class_cache class_cache, classes classes = map_dirs('**/cdesc*.yaml') { |f| Dir[f] } warn "Updating class cache with #{classes.size} classes..." populate_class_cache class_cache, classes, true write_cache class_cache, class_cache_file_path end end def class_cache_file_path File.join cache_file_path, @class_cache_name end def cache_file_for(klassname) File.join cache_file_path, klassname.gsub(/:+/, "-") end def cache_file_path File.join @homepath, 'cache' end def display_class(name) klass = class_cache[name] @display.display_class_info klass, class_cache end def load_cache_for(klassname) path = cache_file_for klassname if File.exist? path and File.mtime(path) >= File.mtime(class_cache_file_path) then File.open path, 'rb' do |fp| Marshal.load fp.read end else class_cache = nil File.open class_cache_file_path, 'rb' do |fp| class_cache = Marshal.load fp.read end klass = class_cache[klassname] return nil unless klass method_files = klass["sources"] cache = {} sys_dir = @sys_dirs.first method_files.each do |f| system_file = f.index(sys_dir) == 0 Dir[File.join(File.dirname(f), "*")].each do |yaml| next unless yaml =~ /yaml$/ next if yaml =~ /cdesc-[^\/]+yaml$/ method = read_yaml yaml name = method["full_name"] ext_path = f ext_path = "gem #{$1}" if f =~ %r%gems/[\d.]+/doc/([^/]+)% method["source_path"] = ext_path unless system_file cache[name] = method end end write_cache cache, path end end def map_dirs(file_name, system=false) dirs = if system == :all then @all_dirs else if system then @sys_dirs else @all_dirs - @sys_dirs end end dirs.map { |dir| yield File.join(dir, file_name) }.flatten.compact end def populate_class_cache(class_cache, classes, extension = false) classes.each do |cdesc| desc = read_yaml cdesc klassname = desc["full_name"] unless class_cache.has_key? klassname then desc["display_name"] = "Class" desc["sources"] = [cdesc] desc["instance_method_extensions"] = [] desc["class_method_extensions"] = [] class_cache[klassname] = desc else klass = class_cache[klassname] if extension then desc["instance_method_extensions"] = desc.delete "instance_methods" desc["class_method_extensions"] = desc.delete "class_methods" end klass.merge_enums desc klass["sources"] << cdesc end end end def read_yaml(path) YAML.load File.read(path).gsub(/ \!ruby\/(object|struct):(RDoc::RI|RI|SM).*/, '') end def get_info_for(arg) @names = [arg] run end def run if @names.empty? then @display.list_known_classes class_cache.keys.sort else @names.each do |name| case name when /::|\#|\./ then if class_cache.key? name then display_class name else meth = nil parts = name.split(/::|\#|\./) meth = parts.pop unless parts.last =~ /^[A-Z]/ klass = parts.join '::' cache = load_cache_for klass # HACK Does not support F.n abort "Nothing known about #{name}" unless cache method = cache[name.gsub(/\./, '#')] abort "Nothing known about #{name}" unless method @display.display_method_info method end else if class_cache.key? name then display_class name else methods = select_methods(/^#{name}/) if methods.size == 0 abort "Nothing known about #{name}" elsif methods.size == 1 @display.display_method_info methods.first else @display.display_method_list methods end end end end end end def select_methods(pattern) methods = [] class_cache.keys.sort.each do |klass| class_cache[klass]["instance_methods"].map{|h|h["name"]}.grep(pattern) do |name| method = load_cache_for(klass)[klass+'#'+name] methods << method if method end class_cache[klass]["class_methods"].map{|h|h["name"]}.grep(pattern) do |name| method = load_cache_for(klass)[klass+'::'+name] methods << method if method end end methods end def write_cache(cache, path) File.open path, "wb" do |cache_file| Marshal.dump cache, cache_file end cache end end class Hash def method_missing method, *args self[method.to_s] end def merge_enums(other) other.each do |k,v| if self[k] then case v when Array then self[k] += v when Hash then self[k].merge! v else # do nothing end else self[k] = v end end end end