require 'rdoc' require 'find' require 'fileutils' require 'time' ## # This is the driver for generating RDoc output. It file parsing and # generation of output. # # To use this class to generate RDoc output via the API, the recommended way # is: # # rdoc = RDoc::RDoc.new # options = rdoc.load_options # returns an RDoc::Options instance # # set extra options # rdoc.document options # # You can also generate output like the +rdoc+ executable: # # rdoc = RDoc::RDoc.new # rdoc.document argv # # Where +argv+ is an array of strings, each corresponding to an argument you'd # give rdoc on the command line. See rdoc --help for details. class RDoc::RDoc @current = nil ## # This is the list of supported output generators GENERATORS = {} ## # File pattern to exclude attr_accessor :exclude ## # Generator instance used for creating output attr_accessor :generator ## # Hash of files and their last modified times. attr_reader :last_modified ## # RDoc options attr_accessor :options ## # Accessor for statistics. Available after each call to parse_files attr_reader :stats ## # Add +klass+ that can generate output after parsing def self.add_generator(klass) name = klass.name.sub(/^RDoc::Generator::/, '').downcase GENERATORS[name] = klass end ## # Active RDoc::RDoc instance def self.current @current end ## # Sets the active RDoc::RDoc instance def self.current= rdoc @current = rdoc end ## # Resets all internal state def self.reset RDoc::TopLevel.reset RDoc::Parser::C.reset RDoc::RDoc.current = nil end ## # Creates a new RDoc::RDoc instance. Call #document to parse files and # generate documentation. def initialize @current = nil @exclude = nil @generator = nil @last_modified = {} @old_siginfo = nil @options = nil @stats = nil end ## # Report an error message and exit def error(msg) raise RDoc::Error, msg end ## # Gathers a set of parseable files from the files and directories listed in # +files+. def gather_files files files = ["."] if files.empty? file_list = normalized_file_list files, true, @exclude file_list = file_list.uniq file_list = remove_unparseable file_list end ## # Turns RDoc from stdin into HTML def handle_pipe @html = RDoc::Markup::ToHtml.new parser = RDoc::Text::MARKUP_FORMAT[@options.markup] document = parser.parse $stdin.read out = @html.convert document $stdout.write out end ## # Installs a siginfo handler that prints the current filename. def install_siginfo_handler return unless Signal.list.include? 'INFO' @old_siginfo = trap 'INFO' do puts @current if @current end end ## # Loads options from .rdoc_options if the file exists, otherwise creates a # new RDoc::Options instance. def load_options options_file = File.expand_path '.rdoc_options' return RDoc::Options.new unless File.exist? options_file RDoc.load_yaml parse_error = if Object.const_defined? :Psych then Psych::SyntaxError else ArgumentError end begin options = YAML.load_file '.rdoc_options' rescue *parse_error end raise RDoc::Error, "#{options_file} is not a valid rdoc options file" unless RDoc::Options === options options end ## # Create an output dir if it doesn't exist. If it does exist, but doesn't # contain the flag file created.rid then we refuse to use it, as # we may clobber some manually generated documentation def setup_output_dir(dir, force) flag_file = output_flag_file dir last = {} if @options.dry_run then # do nothing elsif File.exist? dir then error "#{dir} exists and is not a directory" unless File.directory? dir begin open flag_file do |io| unless force then Time.parse io.gets io.each do |line| file, time = line.split "\t", 2 time = Time.parse(time) rescue next last[file] = time end end end rescue SystemCallError, TypeError error <<-ERROR Directory #{dir} already exists, but it looks like it isn't an RDoc directory. Because RDoc doesn't want to risk destroying any of your existing files, you'll need to specify a different output directory name (using the --op option) ERROR end unless @options.force_output else FileUtils.mkdir_p dir FileUtils.touch output_flag_file dir end last end ## # Update the flag file in an output directory. def update_output_dir(op_dir, time, last = {}) return if @options.dry_run or not @options.update_output_dir open output_flag_file(op_dir), "w" do |f| f.puts time.rfc2822 last.each do |n, t| f.puts "#{n}\t#{t.rfc2822}" end end end ## # Return the path name of the flag file in an output directory. def output_flag_file(op_dir) File.join op_dir, "created.rid" end ## # The .document file contains a list of file and directory name patterns, # representing candidates for documentation. It may also contain comments # (starting with '#') def parse_dot_doc_file in_dir, filename # read and strip comments patterns = File.read(filename).gsub(/#.*/, '') result = [] patterns.split.each do |patt| candidates = Dir.glob(File.join(in_dir, patt)) result.concat normalized_file_list(candidates) end result end ## # Given a list of files and directories, create a list of all the Ruby # files they contain. # # If +force_doc+ is true we always add the given files, if false, only # add files that we guarantee we can parse. It is true when looking at # files given on the command line, false when recursing through # subdirectories. # # The effect of this is that if you want a file with a non-standard # extension parsed, you must name it explicitly. def normalized_file_list(relative_files, force_doc = false, exclude_pattern = nil) file_list = [] relative_files.each do |rel_file_name| next if exclude_pattern && exclude_pattern =~ rel_file_name stat = File.stat rel_file_name rescue next case type = stat.ftype when "file" then next if last_modified = @last_modified[rel_file_name] and stat.mtime.to_i <= last_modified.to_i if force_doc or RDoc::Parser.can_parse(rel_file_name) then file_list << rel_file_name.sub(/^\.\//, '') @last_modified[rel_file_name] = stat.mtime end when "directory" then next if rel_file_name == "CVS" || rel_file_name == ".svn" dot_doc = File.join rel_file_name, RDoc::DOT_DOC_FILENAME if File.file? dot_doc then file_list << parse_dot_doc_file(rel_file_name, dot_doc) else file_list << list_files_in_directory(rel_file_name) end else raise RDoc::Error, "I can't deal with a #{type} #{rel_file_name}" end end file_list.flatten end ## # Return a list of the files to be processed in a directory. We know that # this directory doesn't have a .document file, so we're looking for real # files. However we may well contain subdirectories which must be tested # for .document files. def list_files_in_directory dir files = Dir.glob File.join(dir, "*") normalized_file_list files, false, @options.exclude end ## # Parses +filename+ and returns an RDoc::TopLevel def parse_file filename if defined?(Encoding) then encoding = @options.encoding filename = filename.encode encoding end @stats.add_file filename content = RDoc::Encoding.read_file filename, encoding return unless content top_level = RDoc::TopLevel.new filename parser = RDoc::Parser.for top_level, filename, content, @options, @stats return unless parser parser.scan # restart documentation for the classes & modules found top_level.classes_or_modules.each do |cm| cm.done_documenting = false end top_level rescue => e $stderr.puts <<-EOF Before reporting this, could you check that the file you're documenting has proper syntax: #{Gem.ruby} -c #{filename} RDoc is not a full Ruby parser and will fail when fed invalid ruby programs. The internal error was: \t(#{e.class}) #{e.message} EOF $stderr.puts e.backtrace.join("\n\t") if $DEBUG_RDOC raise e nil end ## # Parse each file on the command line, recursively entering directories. def parse_files files file_list = gather_files files @stats = RDoc::Stats.new file_list.size, @options.verbosity return [] if file_list.empty? file_info = [] @stats.begin_adding file_info = file_list.map do |filename| @current = filename parse_file filename end.compact @stats.done_adding file_info end ## # Removes file extensions known to be unparseable from +files+ and TAGS # files for emacs and vim. def remove_unparseable files files.reject do |file| file =~ /\.(?:class|eps|erb|scpt\.txt|ttf|yml)$/i or (file =~ /tags$/i and open(file, 'rb') { |io| io.read(100) =~ /\A(\f\n[^,]+,\d+$|!_TAG_)/ }) end end ## # Generates documentation or a coverage report depending upon the settings # in +options+. # # +options+ can be either an RDoc::Options instance or an array of strings # equivalent to the strings that would be passed on the command line like # %w[-q -o doc -t My\ Doc\ Title]. #document will automatically # call RDoc::Options#finish if an options instance was given. # # For a list of options, see either RDoc::Options or rdoc --help. # # By default, output will be stored in a directory called "doc" below the # current directory, so make sure you're somewhere writable before invoking. def document options RDoc::RDoc.reset RDoc::RDoc.current = self if RDoc::Options === options then @options = options @options.finish else @options = load_options @options.parse options end if @options.pipe then handle_pipe exit end @exclude = @options.exclude unless @options.coverage_report then @last_modified = setup_output_dir @options.op_dir, @options.force_update end @start_time = Time.now file_info = parse_files @options.files @options.default_title = "RDoc Documentation" RDoc::TopLevel.complete @options.visibility @stats.coverage_level = @options.coverage_report if @options.coverage_report then puts puts @stats.report elsif file_info.empty? then $stderr.puts "\nNo newer files." unless @options.quiet else gen_klass = @options.generator @generator = gen_klass.new @options generate file_info end if @stats and (@options.coverage_report or not @options.quiet) then puts puts @stats.summary end exit @stats.fully_documented? if @options.coverage_report end ## # Generates documentation for +file_info+ (from #parse_files) into the # output dir using the generator selected # by the RDoc options def generate file_info Dir.chdir @options.op_dir do unless @options.quiet then $stderr.puts "\nGenerating #{@generator.class.name.sub(/^.*::/, '')} format into #{Dir.pwd}..." end @generator.generate file_info update_output_dir '.', @start_time, @last_modified end end ## # Removes a siginfo handler and replaces the previous def remove_siginfo_handler return unless Signal.list.key? 'INFO' handler = @old_siginfo || 'DEFAULT' trap 'INFO', handler end end begin require 'rubygems' if Gem.respond_to? :find_files then rdoc_extensions = Gem.find_files 'rdoc/discover' rdoc_extensions.each do |extension| begin load extension rescue => e warn "error loading #{extension.inspect}: #{e.message} (#{e.class})" warn "\t#{e.backtrace.join "\n\t"}" if $DEBUG end end end rescue LoadError end # require built-in generators after discovery in case they've been replaced require 'rdoc/generator/darkfish' require 'rdoc/generator/ri'