class RDoc::RDoc
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 <tt>rdoc
–help<tt> for details.
Constants
- GENERATORS
This is the list of supported output generators
Attributes
File pattern to exclude
Generator instance used for creating output
Hash of files and their last modified times.
RDoc options
Accessor for statistics. Available after each call to #parse_files
Public Class Methods
Add klass
that can generate output after parsing
# File lib/rdoc/rdoc.rb, line 64 def self.add_generator(klass) name = klass.name.sub(/^RDoc::Generator::/, '').downcase GENERATORS[name] = klass end
Active RDoc::RDoc instance
# File lib/rdoc/rdoc.rb, line 72 def self.current @current end
Sets the active RDoc::RDoc instance
# File lib/rdoc/rdoc.rb, line 79 def self.current= rdoc @current = rdoc end
Creates a new RDoc::RDoc instance. Call document to parse files and generate documentation.
# File lib/rdoc/rdoc.rb, line 96 def initialize @current = nil @exclude = nil @generator = nil @last_modified = {} @old_siginfo = nil @options = nil @stats = nil end
Resets all internal state
# File lib/rdoc/rdoc.rb, line 86 def self.reset RDoc::TopLevel.reset RDoc::Parser::C.reset RDoc::RDoc.current = nil end
Public Instance Methods
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.
# File lib/rdoc/rdoc.rb, line 427 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
Report an error message and exit
# File lib/rdoc/rdoc.rb, line 109 def error(msg) raise RDoc::Error, msg end
Gathers a set of parseable files from the files and directories listed in
files
.
# File lib/rdoc/rdoc.rb, line 117 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
Generates documentation for file_info
(from parse_files) into the output dir
using the generator selected by the RDoc options
# File lib/rdoc/rdoc.rb, line 487 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
Turns RDoc from stdin into HTML
# File lib/rdoc/rdoc.rb, line 130 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.
# File lib/rdoc/rdoc.rb, line 145 def install_siginfo_handler return unless Signal.list.include? 'INFO' @old_siginfo = trap 'INFO' do puts @current if @current end 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.
# File lib/rdoc/rdoc.rb, line 319 def list_files_in_directory dir files = Dir.glob File.join(dir, "*") normalized_file_list files, false, @options.exclude end
Loads options from .rdoc_options if the file exists, otherwise creates a new RDoc::Options instance.
# File lib/rdoc/rdoc.rb, line 157 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
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.
# File lib/rdoc/rdoc.rb, line 278 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 the path name of the flag file in an output directory.
# File lib/rdoc/rdoc.rb, line 243 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 '#')
# File lib/rdoc/rdoc.rb, line 252 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
Parses filename
and returns an RDoc::TopLevel
# File lib/rdoc/rdoc.rb, line 328 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 $DEBUG_RDOC raise e nil end
Parse each file on the command line, recursively entering directories.
# File lib/rdoc/rdoc.rb, line 379 def parse_files files file_list = gather_files files @stats = RDoc::Stats.new file_list.size, @options.verbosity return [] if file_list.empty? file_info = [] @stats.begin_adding file_info = file_list.map do |filename| @current = filename parse_file filename end.compact @stats.done_adding file_info end
Removes a siginfo handler and replaces the previous
# File lib/rdoc/rdoc.rb, line 501 def remove_siginfo_handler return unless Signal.list.key? 'INFO' handler = @old_siginfo || 'DEFAULT' trap 'INFO', handler end
Removes file extensions known to be unparseable from files
and
TAGS files for emacs and vim.
# File lib/rdoc/rdoc.rb, line 403 def remove_unparseable files files.reject do |file| file =~ /\.(?:class|eps|erb|scpt\.txt|ttf|yml)$/i or (file =~ /tags$/i and open(file, 'rb') { |io| io.read(100) =~ /\A(\f\n[^,]+,\d+$|!_TAG_)/ }) end end
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
# File lib/rdoc/rdoc.rb, line 185 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 <dir> 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.
# File lib/rdoc/rdoc.rb, line 229 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