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require 'optparse'
require 'rdoc/ri/paths'
##
# RDoc::Options handles the parsing and storage of options
class RDoc::Options
##
# The deprecated options.
DEPRECATED = {
'--accessor' => 'support discontinued',
'--diagram' => 'support discontinued',
'--help-output' => 'support discontinued',
'--image-format' => 'was an option for --diagram',
'--inline-source' => 'source code is now always inlined',
'--merge' => 'ri now always merges class information',
'--one-file' => 'support discontinued',
'--op-name' => 'support discontinued',
'--opname' => 'support discontinued',
'--promiscuous' => 'files always only document their content',
'--ri-system' => 'Ruby installers use other techniques',
}
##
# Template option validator for OptionParser
Template = nil
##
# Character-set for HTML output. #encoding is preferred over #charset
attr_accessor :charset
##
# If true, RDoc will not write any files.
attr_accessor :dry_run
##
# Encoding of output where. This is set via --encoding.
attr_accessor :encoding if Object.const_defined? :Encoding
##
# Files matching this pattern will be excluded
attr_accessor :exclude
##
# The list of files to be processed
attr_accessor :files
##
# Create the output even if the output directory does not look
# like an rdoc output directory
attr_accessor :force_output
##
# Scan newer sources than the flag file if true.
attr_accessor :force_update
##
# Formatter to mark up text with
attr_accessor :formatter
##
# Description of the output generator (set with the <tt>--fmt</tt> option)
attr_accessor :generator
##
# Loaded generator options. Used to prevent --help from loading the same
# options multiple times.
attr_accessor :generator_options
##
# Old rdoc behavior: hyperlink all words that match a method name,
# even if not preceded by '#' or '::'
attr_accessor :hyperlink_all
##
# Include line numbers in the source code
attr_accessor :line_numbers
##
# Name of the file, class or module to display in the initial index page (if
# not specified the first file we encounter is used)
attr_accessor :main_page
##
# If true, only report on undocumented files
attr_accessor :coverage_report
##
# The name of the output directory
attr_accessor :op_dir
##
# The OptionParser for this instance
attr_accessor :option_parser
##
# Is RDoc in pipe mode?
attr_accessor :pipe
##
# Array of directories to search for files to satisfy an :include:
attr_accessor :rdoc_include
##
# Include the '#' at the front of hyperlinked instance method names
attr_accessor :show_hash
##
# The number of columns in a tab
attr_accessor :tab_width
##
# Template to be used when generating output
attr_accessor :template
##
# Directory the template lives in
attr_accessor :template_dir
##
# Documentation title
attr_accessor :title
##
# Should RDoc update the timestamps in the output dir?
attr_accessor :update_output_dir
##
# Verbosity, zero means quiet
attr_accessor :verbosity
##
# URL of web cvs frontend
attr_accessor :webcvs
##
# Minimum visibility of a documented method. One of +:public+,
# +:protected+, +:private+. May be overridden on a per-method
# basis with the :doc: directive.
attr_accessor :visibility
def initialize # :nodoc:
require 'rdoc/rdoc'
@dry_run = false
@exclude = []
@force_output = false
@force_update = true
@generator = nil
@generator_name = nil
@generator_options = []
@generators = RDoc::RDoc::GENERATORS
@hyperlink_all = false
@line_numbers = false
@main_page = nil
@coverage_report = false
@op_dir = nil
@pipe = false
@rdoc_include = []
@show_hash = false
@stylesheet_url = nil
@tab_width = 8
@template = nil
@template_dir = nil
@title = nil
@update_output_dir = true
@verbosity = 1
@visibility = :protected
@webcvs = nil
if Object.const_defined? :Encoding then
@encoding = Encoding.default_external
@charset = @encoding.to_s
else
@charset = 'UTF-8'
end
end
##
# Check that the files on the command line exist
def check_files
@files.delete_if do |file|
if File.exist? file then
if File.readable? file then
false
else
warn "file '#{file}' not readable"
true
end
else
warn "file '#{file}' not found"
true
end
end
end
##
# Ensure only one generator is loaded
def check_generator
if @generator then
raise OptionParser::InvalidOption,
"generator already set to #{@generator_name}"
end
end
##
# Set the title, but only if not already set. Used to set the title
# from a source file, so that a title set from the command line
# will have the priority.
def default_title=(string)
@title ||= string
end
##
# Completes any unfinished option setup business such as filtering for
# existent files, creating a regexp for #exclude and setting a default
# #template.
def finish
@op_dir ||= 'doc'
@rdoc_include << "." if @rdoc_include.empty?
if @exclude.empty? then
@exclude = nil
else
@exclude = Regexp.new(@exclude.join("|"))
end
check_files
# If no template was specified, use the default template for the output
# formatter
unless @template then
@template = @generator_name
@template_dir = template_dir_for @template
end
self
end
##
# Returns a properly-space list of generators and their descriptions.
def generator_descriptions
lengths = []
generators = RDoc::RDoc::GENERATORS.map do |name, generator|
lengths << name.length
description = generator::DESCRIPTION if
generator.const_defined? :DESCRIPTION
[name, description]
end
longest = lengths.max
generators.sort.map do |name, description|
if description then
" %-*s - %s" % [longest, name, description]
else
" #{name}"
end
end.join "\n"
end
##
# Parses command line options.
def parse(argv)
ignore_invalid = true
argv.insert(0, *ENV['RDOCOPT'].split) if ENV['RDOCOPT']
opts = OptionParser.new do |opt|
@option_parser = opt
opt.program_name = File.basename $0
opt.version = RDoc::VERSION
opt.release = nil
opt.summary_indent = ' ' * 4
opt.banner = <<-EOF
Usage: #{opt.program_name} [options] [names...]
Files are parsed, and the information they contain collected, before any
output is produced. This allows cross references between all files to be
resolved. If a name is a directory, it is traversed. If no names are
specified, all Ruby files in the current directory (and subdirectories) are
processed.
How RDoc generates output depends on the output formatter being used, and on
the options you give.
Options can be specified via the RDOCOPT environment variable, which
functions similar to the RUBYOPT environment variable for ruby.
$ export RDOCOPT="--show-hash"
will make rdoc show hashes in method links by default. Command-line options
always will override those in RDOCOPT.
Available formatters:
#{generator_descriptions}
RDoc understands the following file formats:
EOF
parsers = Hash.new { |h,parser| h[parser] = [] }
RDoc::Parser.parsers.each do |regexp, parser|
parsers[parser.name.sub('RDoc::Parser::', '')] << regexp.source
end
parsers.sort.each do |parser, regexp|
opt.banner << " - #{parser}: #{regexp.join ', '}\n"
end
opt.banner << "\n The following options are deprecated:\n\n"
name_length = DEPRECATED.keys.sort_by { |k| k.length }.last.length
DEPRECATED.sort_by { |k,| k }.each do |name, reason|
opt.banner << " %*1$2$s %3$s\n" % [-name_length, name, reason]
end
opt.accept Template do |template|
template_dir = template_dir_for template
unless template_dir then
warn "could not find template #{template}"
nil
else
[template, template_dir]
end
end
opt.separator nil
opt.separator "Parsing options:"
opt.separator nil
if Object.const_defined? :Encoding then
opt.on("--encoding=ENCODING", "-e", Encoding.list.map { |e| e.name },
"Specifies the output encoding. All files",
"read will be converted to this encoding.",
"Preferred over --charset") do |value|
@encoding = Encoding.find value
@charset = @encoding.to_s # may not be valid value
end
opt.separator nil
end
opt.on("--all", "-a",
"Synonym for --visibility=private.") do |value|
@visibility = :private
end
opt.separator nil
opt.on("--exclude=PATTERN", "-x", Regexp,
"Do not process files or directories",
"matching PATTERN.") do |value|
@exclude << value
end
opt.separator nil
opt.on("--extension=NEW=OLD", "-E",
"Treat files ending with .new as if they",
"ended with .old. Using '-E cgi=rb' will",
"cause xxx.cgi to be parsed as a Ruby file.") do |value|
new, old = value.split(/=/, 2)
unless new and old then
raise OptionParser::InvalidArgument, "Invalid parameter to '-E'"
end
unless RDoc::Parser.alias_extension old, new then
raise OptionParser::InvalidArgument, "Unknown extension .#{old} to -E"
end
end
opt.separator nil
opt.on("--[no-]force-update", "-U",
"Forces rdoc to scan all sources even if",
"newer than the flag file.") do |value|
@force_update = value
end
opt.separator nil
opt.on("--pipe",
"Convert RDoc on stdin to HTML") do
@pipe = true
end
opt.separator nil
opt.on("--tab-width=WIDTH", "-w", OptionParser::DecimalInteger,
"Set the width of tab characters.") do |value|
@tab_width = value
end
opt.separator nil
opt.on("--visibility=VISIBILITY", "-V", RDoc::VISIBILITIES,
"Minimum visibility to document a method.",
"One of 'public', 'protected' (the default)",
"or 'private'. Can be abbreviated.") do |value|
@visibility = value
end
opt.separator nil
opt.separator "Common generator options:"
opt.separator nil
opt.on("--force-output", "-O",
"Forces rdoc to write the output files,",
"even if the output directory exists",
"and does not seem to have been created",
"by rdoc.") do |value|
@force_output = value
end
opt.separator nil
generator_text = @generators.keys.map { |name| " #{name}" }.sort
opt.on("-f", "--fmt=FORMAT", "--format=FORMAT", @generators.keys,
"Set the output formatter. One of:", *generator_text) do |value|
check_generator
@generator_name = value.downcase
setup_generator
end
opt.separator nil
opt.on("--include=DIRECTORIES", "-i", Array,
"Set (or add to) the list of directories to",
"be searched when satisfying :include:",
"requests. Can be used more than once.") do |value|
@rdoc_include.concat value.map { |dir| dir.strip }
end
opt.separator nil
opt.on("--[no-]coverage-report=[LEVEL]", "--[no-]dcov", "-C", Integer,
"Prints a report on undocumented items.",
"Does not generate files.") do |value|
value = 0 if value.nil? # Integer converts -C to nil
@coverage_report = value
@force_update = true if value
end
opt.separator nil
opt.on("--output=DIR", "--op", "-o",
"Set the output directory.") do |value|
@op_dir = value
end
opt.separator nil
opt.on("-d",
"Deprecated --diagram option.",
"Prevents firing debug mode",
"with legacy invocation.") do |value|
end
opt.separator nil
opt.separator 'HTML generator options:'
opt.separator nil
opt.on("--charset=CHARSET", "-c",
"Specifies the output HTML character-set.",
"Use --encoding instead of --charset if",
"available.") do |value|
@charset = value
end
opt.separator nil
opt.on("--hyperlink-all", "-A",
"Generate hyperlinks for all words that",
"correspond to known methods, even if they",
"do not start with '#' or '::' (legacy",
"behavior).") do |value|
@hyperlink_all = value
end
opt.separator nil
opt.on("--main=NAME", "-m",
"NAME will be the initial page displayed.") do |value|
@main_page = value
end
opt.separator nil
opt.on("--[no-]line-numbers", "-N",
"Include line numbers in the source code.",
"By default, only the number of the first",
"line is displayed, in a leading comment.") do |value|
@line_numbers = value
end
opt.separator nil
opt.on("--show-hash", "-H",
"A name of the form #name in a comment is a",
"possible hyperlink to an instance method",
"name. When displayed, the '#' is removed",
"unless this option is specified.") do |value|
@show_hash = value
end
opt.separator nil
opt.on("--template=NAME", "-T", Template,
"Set the template used when generating",
"output. The default depends on the",
"formatter used.") do |(template, template_dir)|
@template = template
@template_dir = template_dir
end
opt.separator nil
opt.on("--title=TITLE", "-t",
"Set TITLE as the title for HTML output.") do |value|
@title = value
end
opt.separator nil
opt.on("--webcvs=URL", "-W",
"Specify a URL for linking to a web frontend",
"to CVS. If the URL contains a '\%s', the",
"name of the current file will be",
"substituted; if the URL doesn't contain a",
"'\%s', the filename will be appended to it.") do |value|
@webcvs = value
end
opt.separator nil
opt.separator "ri generator options:"
opt.separator nil
opt.on("--ri", "-r",
"Generate output for use by `ri`. The files",
"are stored in the '.rdoc' directory under",
"your home directory unless overridden by a",
"subsequent --op parameter, so no special",
"privileges are needed.") do |value|
check_generator
@generator_name = "ri"
@op_dir ||= RDoc::RI::Paths::HOMEDIR
setup_generator
end
opt.separator nil
opt.on("--ri-site", "-R",
"Generate output for use by `ri`. The files",
"are stored in a site-wide directory,",
"making them accessible to others, so",
"special privileges are needed.") do |value|
check_generator
@generator_name = "ri"
@op_dir = RDoc::RI::Paths::SITEDIR
setup_generator
end
opt.separator nil
opt.separator "Generic options:"
opt.separator nil
opt.on("--[no-]dry-run",
"Don't write any files") do |value|
@dry_run = value
end
opt.on("-D", "--[no-]debug",
"Displays lots on internal stuff.") do |value|
$DEBUG_RDOC = value
end
opt.on("--[no-]ignore-invalid",
"Ignore invalid options and continue",
"(default true).") do |value|
ignore_invalid = value
end
opt.on("--quiet", "-q",
"Don't show progress as we parse.") do |value|
@verbosity = 0
end
opt.on("--verbose", "-v",
"Display extra progress as RDoc parses") do |value|
@verbosity = 2
end
opt.on("--help",
"Display this help") do
RDoc::RDoc::GENERATORS.each_key do |generator|
setup_generator generator
end
puts opt.help
exit
end
opt.separator nil
end
setup_generator 'darkfish' if
argv.grep(/\A(-f|--fmt|--format|-r|-R|--ri|--ri-site)\b/).empty?
deprecated = []
invalid = []
begin
opts.parse! argv
rescue OptionParser::InvalidArgument, OptionParser::InvalidOption => e
if DEPRECATED[e.args.first] then
deprecated << e.args.first
elsif %w[--format --ri -r --ri-site -R].include? e.args.first then
raise
else
invalid << e.args.join(' ')
end
retry
end
unless @generator then
@generator = RDoc::Generator::Darkfish
@generator_name = 'darkfish'
end
if @pipe and not argv.empty? then
@pipe = false
invalid << '-p (with files)'
end
unless quiet then
deprecated.each do |opt|
$stderr.puts 'option ' << opt << ' is deprecated: ' << DEPRECATED[opt]
end
unless invalid.empty? then
invalid = "invalid options: #{invalid.join ', '}"
if ignore_invalid then
$stderr.puts invalid
$stderr.puts '(invalid options are ignored)'
else
$stderr.puts opts
$stderr.puts invalid
exit 1
end
end
end
@files = argv.dup
finish
end
##
# Don't display progress as we process the files
def quiet
@verbosity.zero?
end
##
# Set quietness to +bool+
def quiet= bool
@verbosity = bool ? 0 : 1
end
##
# Set up an output generator for the named +generator_name+.
#
# If the found generator responds to :setup_options it will be called with
# the options instance. This allows generators to add custom options or set
# default options.
def setup_generator generator_name = @generator_name
@generator = @generators[generator_name]
unless @generator then
raise OptionParser::InvalidArgument,
"Invalid output formatter #{generator_name}"
end
return if @generator_options.include? @generator
@generator_name = generator_name
@generator_options << @generator
if @generator.respond_to? :setup_options then
@option_parser ||= OptionParser.new
@generator.setup_options self
end
end
##
# Finds the template dir for +template+
def template_dir_for template
template_path = File.join 'rdoc', 'generator', 'template', template
$LOAD_PATH.map do |path|
File.join File.expand_path(path), template_path
end.find do |dir|
File.directory? dir
end
end
end
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