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# See README.
#
VERSION_STRING = %{RDoc V1.0.1 - 20041108}
require 'rdoc/parsers/parse_rb.rb'
require 'rdoc/parsers/parse_c.rb'
require 'rdoc/parsers/parse_f95.rb'
require 'rdoc/parsers/parse_simple.rb'
require 'rdoc/options'
require 'rdoc/diagram'
require 'find'
require 'ftools'
require 'time'
# We put rdoc stuff in the RDoc module to avoid namespace
# clutter.
#
# ToDo: This isn't universally true.
#
# :include: README
module RDoc
# Name of the dotfile that contains the description of files to be
# processed in the current directory
DOT_DOC_FILENAME = ".document"
# Simple stats collector
class Stats
attr_accessor :num_files, :num_classes, :num_modules, :num_methods
def initialize
@num_files = @num_classes = @num_modules = @num_methods = 0
@start = Time.now
end
def print
puts "Files: #@num_files"
puts "Classes: #@num_classes"
puts "Modules: #@num_modules"
puts "Methods: #@num_methods"
puts "Elapsed: " + sprintf("%0.3fs", Time.now - @start)
end
end
# Exception thrown by any rdoc error. Only the #message part is
# of use externally.
class RDocError < Exception
end
# Encapsulate the production of rdoc documentation. Basically
# you can use this as you would invoke rdoc from the command
# line:
#
# rdoc = RDoc::RDoc.new
# rdoc.document(args)
#
# where _args_ is an array of strings, each corresponding to
# an argument you'd give rdoc on the command line. See rdoc/rdoc.rb
# for details.
class RDoc
##
# This is the list of output generators that we
# support
Generator = Struct.new(:file_name, :class_name, :key)
GENERATORS = {}
$:.collect {|d|
File::expand_path(d)
}.find_all {|d|
File::directory?("#{d}/rdoc/generators")
}.each {|dir|
Dir::entries("#{dir}/rdoc/generators").each {|gen|
next unless /(\w+)_generator.rb$/ =~ gen
type = $1
unless GENERATORS.has_key? type
GENERATORS[type] = Generator.new("rdoc/generators/#{gen}",
"#{type.upcase}Generator".intern,
type)
end
}
}
#######
private
#######
##
# Report an error message and exit
def error(msg)
raise RDocError.new(msg)
end
##
# Create an output dir if it doesn't exist. If it does
# exist, but doesn't contain the flag file <tt>created.rid</tt>
# then we refuse to use it, as we may clobber some
# manually generated documentation
def setup_output_dir(op_dir, force)
flag_file = output_flag_file(op_dir)
if File.exist?(op_dir)
unless File.directory?(op_dir)
error "'#{op_dir}' exists, and is not a directory"
end
begin
created = File.read(flag_file)
rescue SystemCallError
error "\nDirectory #{op_dir} already exists, but it looks like it\n" +
"isn't an RDoc directory. Because RDoc doesn't want to risk\n" +
"destroying any of your existing files, you'll need to\n" +
"specify a different output directory name (using the\n" +
"--op <dir> option).\n\n"
else
last = (Time.parse(created) unless force rescue nil)
end
else
File.makedirs(op_dir)
end
last
end
# Update the flag file in an output directory.
def update_output_dir(op_dir, time)
File.open(output_flag_file(op_dir), "w") {|f| f.puts time.rfc2822 }
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, options)
# 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(options, 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 explicity.
#
def normalized_file_list(options, 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)
case type = stat.ftype
when "file"
next if @last_created and stat.mtime < @last_created
file_list << rel_file_name.sub(/^\.\//, '') if force_doc || ParserFactory.can_parse(rel_file_name)
when "directory"
next if rel_file_name == "CVS" || rel_file_name == ".svn"
dot_doc = File.join(rel_file_name, DOT_DOC_FILENAME)
if File.file?(dot_doc)
file_list.concat(parse_dot_doc_file(rel_file_name, dot_doc, options))
else
file_list.concat(list_files_in_directory(rel_file_name, options))
end
else
raise RDocError.new("I can't deal with a #{type} #{rel_file_name}")
end
end
file_list
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, options)
normalized_file_list(options, Dir.glob(File.join(dir, "*")), false, options.exclude)
end
# Parse each file on the command line, recursively entering
# directories
def parse_files(options)
file_info = []
files = options.files
files = ["."] if files.empty?
file_list = normalized_file_list(options, files, true)
file_list.each do |fn|
$stderr.printf("\n%35s: ", File.basename(fn)) unless options.quiet
content = File.open(fn, "r") {|f| f.read}
top_level = TopLevel.new(fn)
parser = ParserFactory.parser_for(top_level, fn, content, options, @stats)
file_info << parser.scan
@stats.num_files += 1
end
file_info
end
public
###################################################################
#
# Format up one or more files according to the given arguments.
# For simplicity, _argv_ is an array of strings, equivalent to the
# strings that would be passed on the command line. (This isn't a
# coincidence, as we _do_ pass in ARGV when running
# interactively). For a list of options, see rdoc/rdoc.rb. By
# default, output will be stored in a directory called +doc+ below
# the current directory, so make sure you're somewhere writable
# before invoking.
#
# Throws: RDocError on error
def document(argv)
TopLevel::reset
@stats = Stats.new
options = Options.instance
options.parse(argv, GENERATORS)
@last_created = nil
unless options.all_one_file
@last_created = setup_output_dir(options.op_dir, options.force_update)
end
start_time = Time.now
file_info = parse_files(options)
if file_info.empty?
$stderr.puts "\nNo newer files." unless options.quiet
else
gen = options.generator
$stderr.puts "\nGenerating #{gen.key.upcase}..." unless options.quiet
require gen.file_name
gen_class = Generators.const_get(gen.class_name)
gen = gen_class.for(options)
pwd = Dir.pwd
Dir.chdir(options.op_dir) unless options.all_one_file
begin
Diagram.new(file_info, options).draw if options.diagram
gen.generate(file_info)
update_output_dir(".", start_time)
ensure
Dir.chdir(pwd)
end
end
unless options.quiet
puts
@stats.print
end
end
end
end