зеркало из https://github.com/github/ruby.git
Remove lib/rdoc/usage.rb
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@14994 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
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@ -1,3 +1,9 @@
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Fri Jan 11 18:28:49 2008 Eric Hodel <drbrain@segment7.net>
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* lib/rdoc/usage.rb: Removed.
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* lib/getoptlong.rb: Update example to not use lib/rdoc/usage.rb.
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Fri Jan 11 18:17:10 2008 Eric Hodel <drbrain@segment7.net>
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* lib/rdoc/ri/driver.rb (read_yaml): Follow namespace change
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@ -24,25 +24,6 @@
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#
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# Here is a simple example of usage:
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#
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# # == Synopsis
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# #
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# # hello: greets user, demonstrates command line parsing
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# #
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# # == Usage
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# #
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# # hello [OPTION] ... DIR
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# #
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# # -h, --help:
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# # show help
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# #
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# # --repeat x, -n x:
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# # repeat x times
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# #
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# # --name [name]:
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# # greet user by name, if name not supplied default is John
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# #
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# # DIR: The directory in which to issue the greeting.
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#
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# require 'getoptlong'
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# require 'rdoc/usage'
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#
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@ -58,7 +39,20 @@
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# opts.each do |opt, arg|
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# case opt
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# when '--help'
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# RDoc::usage
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# puts <<-EOF
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# hello [OPTION] ... DIR
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#
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# -h, --help:
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# show help
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#
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# --repeat x, -n x:
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# repeat x times
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#
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# --name [name]:
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# greet user by name, if name not supplied default is John
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#
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# DIR: The directory in which to issue the greeting.
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# EOF
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# when '--repeat'
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# repetitions = arg.to_i
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# when '--name'
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@ -1,210 +0,0 @@
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# = Synopsis
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#
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# This library allows command-line tools to encapsulate their usage
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# as a comment at the top of the main file. Calling <tt>RDoc::usage</tt>
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# then displays some or all of that comment, and optionally exits
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# the program with an exit status. We always look for the comment
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# in the main program file, so it is safe to call this method
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# from anywhere in the executing program.
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#
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# = Usage
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#
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# RDoc::usage( [ exit_status ], [ section, ...])
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# RDoc::usage_no_exit( [ section, ...])
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#
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# where:
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#
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# exit_status::
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# the integer exit code (default zero). RDoc::usage will exit
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# the calling program with this status.
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#
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# section::
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# an optional list of section names. If specified, only the
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# sections with the given names as headings will be output.
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# For example, this section is named 'Usage', and the next
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# section is named 'Examples'. The section names are case
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# insensitive.
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#
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# = Examples
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#
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# # Comment block describing usage
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# # with (optional) section headings
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# # . . .
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#
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# require 'rdoc/usage'
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#
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# # Display all usage and exit with a status of 0
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#
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# RDoc::usage
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#
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# # Display all usage and exit with a status of 99
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#
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# RDoc::usage(99)
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#
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# # Display usage in the 'Summary' section only, then
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# # exit with a status of 99
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#
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# RDoc::usage(99, 'Summary')
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#
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# # Display information in the Author and Copyright
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# # sections, then exit 0.
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#
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# RDoc::usage('Author', 'Copyright')
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#
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# # Display information in the Author and Copyright
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# # sections, but don't exit
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#
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# RDoc::usage_no_exit('Author', 'Copyright')
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#
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# = Author
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#
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# Dave Thomas, The Pragmatic Programmers, LLC
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#
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# = Copyright
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#
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# Copyright (c) 2004 Dave Thomas.
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# Licensed under the same terms as Ruby
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#
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require 'rdoc/markup/simple_markup'
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require 'rdoc/markup/simple_markup/to_flow'
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require 'rdoc/ri/ri_formatter'
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require 'rdoc/ri/ri_options'
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module RDoc
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# Display usage information from the comment at the top of
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# the file. String arguments identify specific sections of the
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# comment to display. An optional integer first argument
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# specifies the exit status (defaults to 0)
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def RDoc.usage(*args)
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exit_code = 0
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if args.size > 0
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status = args[0]
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if status.respond_to?(:to_int)
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exit_code = status.to_int
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args.shift
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end
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end
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# display the usage and exit with the given code
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usage_no_exit(*args)
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exit(exit_code)
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end
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# Display usage
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def RDoc.usage_no_exit(*args)
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main_program_file = caller[-1].sub(/:\d+$/, '')
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comment = File.open(main_program_file) do |file|
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find_comment(file)
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end
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comment = comment.gsub(/^\s*#/, '')
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markup = SM::SimpleMarkup.new
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flow_convertor = SM::ToFlow.new
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flow = markup.convert(comment, flow_convertor)
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format = "plain"
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unless args.empty?
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flow = extract_sections(flow, args)
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end
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options = RI::Options.instance
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if args = ENV["RI"]
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options.parse(args.split)
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end
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formatter = options.formatter.new(options, "")
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formatter.display_flow(flow)
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end
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######################################################################
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private
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# Find the first comment in the file (that isn't a shebang line)
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# If the file doesn't start with a comment, report the fact
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# and return empty string
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def RDoc.gets(file)
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if (line = file.gets) && (line =~ /^#!/) # shebang
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throw :exit, find_comment(file)
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else
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line
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end
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end
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def RDoc.find_comment(file)
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catch(:exit) do
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# skip leading blank lines
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0 while (line = gets(file)) && (line =~ /^\s*$/)
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comment = []
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while line && line =~ /^\s*#/
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comment << line
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line = gets(file)
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end
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0 while line && (line = gets(file))
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return no_comment if comment.empty?
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return comment.join
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end
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end
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#####
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# Given an array of flow items and an array of section names, extract those
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# sections from the flow which have headings corresponding to
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# a section name in the list. Return them in the order
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# of names in the +sections+ array.
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def RDoc.extract_sections(flow, sections)
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result = []
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sections.each do |name|
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name = name.downcase
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copy_upto_level = nil
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flow.each do |item|
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case item
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when SM::Flow::H
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if copy_upto_level && item.level >= copy_upto_level
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copy_upto_level = nil
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else
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if item.text.downcase == name
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result << item
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copy_upto_level = item.level
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end
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end
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else
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if copy_upto_level
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result << item
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end
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end
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end
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end
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if result.empty?
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puts "Note to developer: requested section(s) [#{sections.join(', ')}] " +
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"not found"
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result = flow
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end
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result
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end
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#####
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# Report the fact that no doc comment count be found
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def RDoc.no_comment
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$stderr.puts "No usage information available for this program"
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""
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end
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end
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if $0 == __FILE__
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RDoc::usage(*ARGV)
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end
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