#

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# = un.rb

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#

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# Copyright (c) 2003 WATANABE Hirofumi <eban@ruby-lang.org>

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#

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# This program is free software.

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# You can distribute/modify this program under the same terms of Ruby.

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#

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# == Utilities to replace common UNIX commands in Makefiles etc

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#

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# == SYNOPSIS

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#

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# ruby -run -e cp -- [OPTION] SOURCE DEST

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# ruby -run -e ln -- [OPTION] TARGET LINK_NAME

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# ruby -run -e mv -- [OPTION] SOURCE DEST

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# ruby -run -e rm -- [OPTION] FILE

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# ruby -run -e mkdir -- [OPTION] DIRS

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# ruby -run -e rmdir -- [OPTION] DIRS

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# ruby -run -e install -- [OPTION] SOURCE DEST

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# ruby -run -e chmod -- [OPTION] OCTAL-MODE FILE

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# ruby -run -e touch -- [OPTION] FILE

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# ruby -run -e wait_writable -- [OPTION] FILE

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# ruby -run -e mkmf -- [OPTION] EXTNAME [OPTION]

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# ruby -run -e httpd -- [OPTION] DocumentRoot

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# ruby -run -e help [COMMAND]

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require "fileutils"

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require "optparse"

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module FileUtils

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# @fileutils_label = ""

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@fileutils_output = $stdout

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end

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# :nodoc:

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def setup(options = "", *long_options)

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caller = caller_locations(1, 1)[0].label

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opt_hash = {}

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argv = []

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OptionParser.new do |o|

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options.scan(/.:?/) do |s|

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opt_name = s.delete(":").intern

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o.on("-" + s.tr(":", " ")) do |val|

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opt_hash[opt_name] = val

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end

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end

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long_options.each do |s|

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opt_name, arg_name = s.split(/(?=[\s=])/, 2)

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opt_name.sub!(/\A--/, '')

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s = "--#{opt_name.gsub(/([A-Z]+|[a-z])([A-Z])/, '\1-\2').downcase}#{arg_name}"

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puts "#{opt_name}=>#{s}" if $DEBUG

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opt_name = opt_name.intern

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o.on(s) do |val|

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opt_hash[opt_name] = val

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end

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end

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o.on("-v") do opt_hash[:verbose] = true end

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o.on("--help") do

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UN.help([caller])

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exit

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end

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o.order!(ARGV) do |x|

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if /[*?\[{]/ =~ x

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argv.concat(Dir[x])

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else

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argv << x

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end

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end

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end

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yield argv, opt_hash

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end

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##

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# Copy SOURCE to DEST, or multiple SOURCE(s) to DIRECTORY

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#

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# ruby -run -e cp -- [OPTION] SOURCE DEST

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#

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# -p preserve file attributes if possible

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# -r copy recursively

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# -v verbose

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#

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def cp

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setup("pr") do |argv, options|

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cmd = "cp"

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cmd += "_r" if options.delete :r

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options[:preserve] = true if options.delete :p

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dest = argv.pop

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argv = argv[0] if argv.size == 1

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FileUtils.send cmd, argv, dest, options

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end

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end

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##

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# Create a link to the specified TARGET with LINK_NAME.

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#

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# ruby -run -e ln -- [OPTION] TARGET LINK_NAME

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#

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# -s make symbolic links instead of hard links

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# -f remove existing destination files

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# -v verbose

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#

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def ln

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setup("sf") do |argv, options|

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cmd = "ln"

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cmd += "_s" if options.delete :s

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options[:force] = true if options.delete :f

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dest = argv.pop

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argv = argv[0] if argv.size == 1

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FileUtils.send cmd, argv, dest, options

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end

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end

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##

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# Rename SOURCE to DEST, or move SOURCE(s) to DIRECTORY.

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#

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# ruby -run -e mv -- [OPTION] SOURCE DEST

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#

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# -v verbose

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#

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def mv

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setup do |argv, options|

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dest = argv.pop

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argv = argv[0] if argv.size == 1

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FileUtils.mv argv, dest, options

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end

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end

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##

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# Remove the FILE

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#

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# ruby -run -e rm -- [OPTION] FILE

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#

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# -f ignore nonexistent files

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# -r remove the contents of directories recursively

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# -v verbose

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#

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def rm

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setup("fr") do |argv, options|

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cmd = "rm"

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cmd += "_r" if options.delete :r

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options[:force] = true if options.delete :f

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FileUtils.send cmd, argv, options

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end

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end

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##

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# Create the DIR, if they do not already exist.

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#

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# ruby -run -e mkdir -- [OPTION] DIR

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#

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# -p no error if existing, make parent directories as needed

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# -v verbose

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#

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def mkdir

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setup("p") do |argv, options|

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cmd = "mkdir"

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cmd += "_p" if options.delete :p

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FileUtils.send cmd, argv, options

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end

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end

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##

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# Remove the DIR.

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#

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# ruby -run -e rmdir -- [OPTION] DIR

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#

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# -p remove DIRECTORY and its ancestors.

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# -v verbose

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#

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def rmdir

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setup("p") do |argv, options|

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options[:parents] = true if options.delete :p

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FileUtils.rmdir argv, options

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end

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end

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##

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# Copy SOURCE to DEST.

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#

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# ruby -run -e install -- [OPTION] SOURCE DEST

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#

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# -p apply access/modification times of SOURCE files to

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# corresponding destination files

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# -m set permission mode (as in chmod), instead of 0755

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# -v verbose

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#

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def install

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setup("pm:") do |argv, options|

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options[:mode] = (mode = options.delete :m) ? mode.oct : 0755

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options[:preserve] = true if options.delete :p

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dest = argv.pop

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argv = argv[0] if argv.size == 1

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FileUtils.install argv, dest, options

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end

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end

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##

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# Change the mode of each FILE to OCTAL-MODE.

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#

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# ruby -run -e chmod -- [OPTION] OCTAL-MODE FILE

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#

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# -v verbose

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#

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def chmod

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setup do |argv, options|

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mode = argv.shift.oct

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FileUtils.chmod mode, argv, options

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end

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end

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##

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# Update the access and modification times of each FILE to the current time.

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#

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# ruby -run -e touch -- [OPTION] FILE

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#

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# -v verbose

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#

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def touch

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setup do |argv, options|

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FileUtils.touch argv, options

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end

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end

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##

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# Wait until the file becomes writable.

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#

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# ruby -run -e wait_writable -- [OPTION] FILE

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#

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# -n RETRY count to retry

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# -w SEC each wait time in seconds

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# -v verbose

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#

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def wait_writable

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setup("n:w:v") do |argv, options|

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verbose = options[:verbose]

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n = options[:n] and n = Integer(n)

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wait = (wait = options[:w]) ? Float(wait) : 0.2

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argv.each do |file|

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begin

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open(file, "r+b")

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rescue Errno::ENOENT

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break

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rescue Errno::EACCES => e

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raise if n and (n -= 1) <= 0

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if verbose

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puts e

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STDOUT.flush

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end

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sleep wait

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retry

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end

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end

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end

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end

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##

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# Create makefile using mkmf.

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#

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# ruby -run -e mkmf -- [OPTION] EXTNAME [OPTION]

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#

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# -d ARGS run dir_config

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# -h ARGS run have_header

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# -l ARGS run have_library

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# -f ARGS run have_func

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# -v ARGS run have_var

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# -t ARGS run have_type

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# -m ARGS run have_macro

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# -c ARGS run have_const

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# --vendor install to vendor_ruby

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#

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def mkmf

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setup("d:h:l:f:v:t:m:c:", "vendor") do |argv, options|

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require 'mkmf'

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opt = options[:d] and opt.split(/:/).each {|n| dir_config(*n.split(/,/))}

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opt = options[:h] and opt.split(/:/).each {|n| have_header(*n.split(/,/))}

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opt = options[:l] and opt.split(/:/).each {|n| have_library(*n.split(/,/))}

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opt = options[:f] and opt.split(/:/).each {|n| have_func(*n.split(/,/))}

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opt = options[:v] and opt.split(/:/).each {|n| have_var(*n.split(/,/))}

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opt = options[:t] and opt.split(/:/).each {|n| have_type(*n.split(/,/))}

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opt = options[:m] and opt.split(/:/).each {|n| have_macro(*n.split(/,/))}

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opt = options[:c] and opt.split(/:/).each {|n| have_const(*n.split(/,/))}

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$configure_args["--vendor"] = true if options[:vendor]

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create_makefile(*argv)

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end

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end

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##

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# Run WEBrick HTTP server.

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#

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# ruby -run -e httpd -- [OPTION] DocumentRoot

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#

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# --bind-address=ADDR address to bind

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# --port=NUM listening port number

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# --max-clients=MAX max number of simultaneous clients

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# --temp-dir=DIR temporary directory

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# --do-not-reverse-lookup disable reverse lookup

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# --request-timeout=SECOND request timeout in seconds

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# --http-version=VERSION HTTP version

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# -v verbose

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#

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def httpd

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setup("", "BindAddress=ADDR", "Port=PORT", "MaxClients=NUM", "TempDir=DIR",

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"DoNotReverseLookup", "RequestTimeout=SECOND", "HTTPVersion=VERSION") do

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|argv, options|

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require 'webrick'

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opt = options[:RequestTimeout] and options[:RequestTimeout] = opt.to_i

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[:Port, :MaxClients].each do |name|

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opt = options[name] and (options[name] = Integer(opt)) rescue nil

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end

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unless argv.size == 1

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raise ArgumentError, "DocumentRoot is mandatory"

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end

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options[:DocumentRoot] = argv.shift

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s = WEBrick::HTTPServer.new(options)

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shut = proc {s.shutdown}

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siglist = %w"TERM QUIT"

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siglist.concat(%w"HUP INT") if STDIN.tty?

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siglist &= Signal.list.keys

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siglist.each do |sig|

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Signal.trap(sig, shut)

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end

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s.start

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end

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end

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##

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# Display help message.

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#

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# ruby -run -e help [COMMAND]

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#

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def help

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setup do |argv,|

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UN.help(argv)

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end

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end

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module UN # :nodoc:

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module_function

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def help(argv, output: $stdout)

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all = argv.empty?

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cmd = nil

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if all

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store = proc {|msg| output << msg}

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else

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messages = {}

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store = proc {|msg| messages[cmd] = msg}

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end

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open(__FILE__) do |me|

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while me.gets("##\n")

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if help = me.gets("\n\n")

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if all or argv.include?(cmd = help[/^#\s*ruby\s.*-e\s+(\w+)/, 1])

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store[help.gsub(/^# ?/, "")]

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break unless all or argv.size > messages.size

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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 messages

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argv.each {|cmd| output << messages[cmd]}

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end

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end

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end

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