in lib/rdoc/ri/driver.rb [120:376]
def self.process_args argv
options = default_options
opts = OptionParser.new do |opt|
opt.accept File do |file,|
File.readable?(file) and not File.directory?(file) and file
end
opt.program_name = File.basename $0
opt.version = RDoc::VERSION
opt.release = nil
opt.summary_indent = ' ' * 4
opt.banner = <<-EOT
Usage:
Where name can be:
Class | Module | Module::Class
Class::method | Class
gem_name: | gem_name:README | gem_name:History
All class names may be abbreviated to their minimum unambiguous form.
If a name is ambiguous, all valid options will be listed.
A '.' matches either class or instance methods, while
matches only instance and ::method matches only class methods.
README and other files may be displayed by prefixing them with the gem name
they're contained in. If the gem name is followed by a ':' all files in the
gem will be shown. The file name extension may be omitted where it is
unambiguous.
For example:
#{opt.program_name} Fil
#{opt.program_name} File
#{opt.program_name} File.new
#{opt.program_name} zip
#{opt.program_name} rdoc:README
Note that shell quoting or escaping may be required for method names
containing punctuation:
#{opt.program_name} 'Array.[]'
#{opt.program_name} compact\\!
To see the default directories #{opt.program_name} will search, run:
#{opt.program_name} --list-doc-dirs
Specifying the --system, --site, --home, --gems, or --doc-dir options
will limit ri to searching only the specified directories.
ri options may be set in the RI environment variable.
The ri pager can be set with the RI_PAGER environment variable
or the PAGER environment variable.
EOT
opt.separator nil
opt.separator "Options:"
opt.separator nil
opt.on("--[no-]interactive", "-i",
"In interactive mode you can repeatedly",
"look up methods with autocomplete.") do |interactive|
options[:interactive] = interactive
end
opt.separator nil
opt.on("--[no-]all", "-a",
"Show all documentation for a class or",
"module.") do |show_all|
options[:show_all] = show_all
end
opt.separator nil
opt.on("--[no-]list", "-l",
"List classes ri knows about.") do |list|
options[:list] = list
end
opt.separator nil
opt.on("--[no-]pager",
"Send output to a pager,",
"rather than directly to stdout.") do |use_pager|
options[:use_stdout] = !use_pager
end
opt.separator nil
opt.on("-T",
"Synonym for --no-pager.") do
options[:use_stdout] = true
end
opt.separator nil
opt.on("--width=WIDTH", "-w", OptionParser::DecimalInteger,
"Set the width of the output.") do |width|
options[:width] = width
end
opt.separator nil
opt.on("--server[=PORT]", Integer,
"Run RDoc server on the given port.",
"The default port is 8214.") do |port|
options[:server] = port || 8214
end
opt.separator nil
formatters = RDoc::Markup.constants.grep(/^To[A-Z][a-z]+$/).sort
formatters = formatters.sort.map do |formatter|
formatter.to_s.sub('To', '').downcase
end
formatters -= %w[html label test] # remove useless output formats
opt.on("--format=NAME", "-f",
"Use the selected formatter. The default",
"formatter is bs for paged output and ansi",
"otherwise. Valid formatters are:",
"#{formatters.join(', ')}.", formatters) do |value|
options[:formatter] = RDoc::Markup.const_get "To#{value.capitalize}"
end
opt.separator nil
opt.on("--help", "-h",
"Show help and exit.") do
puts opts
exit
end
opt.separator nil
opt.on("--version", "-v",
"Output version information and exit.") do
puts "#{opts.program_name} #{opts.version}"
exit
end
opt.separator nil
opt.separator "Data source options:"
opt.separator nil
opt.on("--[no-]list-doc-dirs",
"List the directories from which ri will",
"source documentation on stdout and exit.") do |list_doc_dirs|
options[:list_doc_dirs] = list_doc_dirs
end
opt.separator nil
opt.on("--doc-dir=DIRNAME", "-d", Array,
"List of directories from which to source",
"documentation in addition to the standard",
"directories. May be repeated.") do |value|
value.each do |dir|
unless File.directory? dir then
raise OptionParser::InvalidArgument, "#{dir} is not a directory"
end
options[:extra_doc_dirs] << File.expand_path(dir)
end
end
opt.separator nil
opt.on("--no-standard-docs",
"Do not include documentation from",
"the Ruby standard library, site_lib,",
"installed gems, or ~/.rdoc.",
"Use with --doc-dir.") do
options[:use_system] = false
options[:use_site] = false
options[:use_gems] = false
options[:use_home] = false
end
opt.separator nil
opt.on("--[no-]system",
"Include documentation from Ruby's",
"standard library. Defaults to true.") do |value|
options[:use_system] = value
end
opt.separator nil
opt.on("--[no-]site",
"Include documentation from libraries",
"installed in site_lib.",
"Defaults to true.") do |value|
options[:use_site] = value
end
opt.separator nil
opt.on("--[no-]gems",
"Include documentation from RubyGems.",
"Defaults to true.") do |value|
options[:use_gems] = value
end
opt.separator nil
opt.on("--[no-]home",
"Include documentation stored in ~/.rdoc.",
"Defaults to true.") do |value|
options[:use_home] = value
end
opt.separator nil
opt.separator "Debug options:"
opt.separator nil
opt.on("--[no-]profile",
"Run with the ruby profiler.") do |value|
options[:profile] = value
end
opt.separator nil
opt.on("--dump=CACHE", File,
"Dump data from an ri cache or data file.") do |value|
options[:dump_path] = value
end
end
argv = ENV['RI'].to_s.split(' ').concat argv
opts.parse! argv
options[:names] = argv
options[:use_stdout] ||= !$stdout.tty?
options[:use_stdout] ||= options[:interactive]
options[:width] ||= 72
options
rescue OptionParser::InvalidArgument, OptionParser::InvalidOption => e
puts opts
puts
puts e
exit 1
end