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+#
+# = un.rb
+#
+# Copyright (c) 2003 WATANABE Hirofumi <eban@ruby-lang.org>
+#
+# This program is free software.
+# You can distribute/modify this program under the same terms of Ruby.
+#
+# == Utilities to replace common UNIX commands in Makefiles etc
+#
+# == SYNOPSIS
+#
+# ruby -run -e cp -- [OPTION] SOURCE DEST
+# ruby -run -e ln -- [OPTION] TARGET LINK_NAME
+# ruby -run -e mv -- [OPTION] SOURCE DEST
+# ruby -run -e rm -- [OPTION] FILE
+# ruby -run -e mkdir -- [OPTION] DIRS
+# ruby -run -e rmdir -- [OPTION] DIRS
+# ruby -run -e install -- [OPTION] SOURCE DEST
+# ruby -run -e chmod -- [OPTION] OCTAL-MODE FILE
+# ruby -run -e touch -- [OPTION] FILE
+# ruby -run -e help [COMMAND]
+
+require "fileutils"
+require "optparse"
+
+module FileUtils
+# @fileutils_label = ""
+ @fileutils_output = $stdout
+end
+
+def setup(options = "")
+ ARGV.map! do |x|
+ case x
+ when /^-/
+ x.delete "^-#{options}v"
+ when /[*?\[{]/
+ Dir[x]
+ else
+ x
+ end
+ end
+ ARGV.flatten!
+ ARGV.delete_if{|x| x == "-"}
+ opt_hash = {}
+ OptionParser.new do |o|
+ options.scan(/.:?/) do |s|
+ o.on("-" + s.tr(":", " ")) do |val|
+ opt_hash[s.delete(":").intern] = val
+ end
+ end
+ o.on("-v") do opt_hash[:verbose] = true end
+ o.parse!
+ end
+ yield ARGV, opt_hash
+end
+
+##
+# Copy SOURCE to DEST, or multiple SOURCE(s) to DIRECTORY
+#
+# ruby -run -e cp -- [OPTION] SOURCE DEST
+#
+# -p preserve file attributes if possible
+# -r copy recursively
+# -v verbose
+#
+
+def cp
+ setup("pr") do |argv, options|
+ cmd = "cp"
+ cmd += "_r" if options.delete :r
+ options[:preserve] = true if options.delete :p
+ dest = argv.pop
+ argv = argv[0] if argv.size == 1
+ FileUtils.send cmd, argv, dest, options
+ end
+end
+
+##
+# Create a link to the specified TARGET with LINK_NAME.
+#
+# ruby -run -e ln -- [OPTION] TARGET LINK_NAME
+#
+# -s make symbolic links instead of hard links
+# -f remove existing destination files
+# -v verbose
+#
+
+def ln
+ setup("sf") do |argv, options|
+ cmd = "ln"
+ cmd += "_s" if options.delete :s
+ options[:force] = true if options.delete :f
+ dest = argv.pop
+ argv = argv[0] if argv.size == 1
+ FileUtils.send cmd, argv, dest, options
+ end
+end
+
+##
+# Rename SOURCE to DEST, or move SOURCE(s) to DIRECTORY.
+#
+# ruby -run -e mv -- [OPTION] SOURCE DEST
+#
+# -v verbose
+#
+
+def mv
+ setup do |argv, options|
+ dest = argv.pop
+ argv = argv[0] if argv.size == 1
+ FileUtils.mv argv, dest, options
+ end
+end
+
+##
+# Remove the FILE
+#
+# ruby -run -e rm -- [OPTION] FILE
+#
+# -f ignore nonexistent files
+# -r remove the contents of directories recursively
+# -v verbose
+#
+
+def rm
+ setup("fr") do |argv, options|
+ cmd = "rm"
+ cmd += "_r" if options.delete :r
+ options[:force] = true if options.delete :f
+ FileUtils.send cmd, argv, options
+ end
+end
+
+##
+# Create the DIR, if they do not already exist.
+#
+# ruby -run -e mkdir -- [OPTION] DIR
+#
+# -p no error if existing, make parent directories as needed
+# -v verbose
+#
+
+def mkdir
+ setup("p") do |argv, options|
+ cmd = "mkdir"
+ cmd += "_p" if options.delete :p
+ FileUtils.send cmd, argv, options
+ end
+end
+
+##
+# Remove the DIR.
+#
+# ruby -run -e rmdir -- [OPTION] DIR
+#
+# -v verbose
+#
+
+def rmdir
+ setup do |argv, options|
+ FileUtils.rmdir argv, options
+ end
+end
+
+##
+# Copy SOURCE to DEST.
+#
+# ruby -run -e install -- [OPTION] SOURCE DEST
+#
+# -p apply access/modification times of SOURCE files to
+# corresponding destination files
+# -m set permission mode (as in chmod), instead of 0755
+# -v verbose
+#
+
+def install
+ setup("pm:") do |argv, options|
+ options[:mode] = (mode = options.delete :m) ? mode.oct : 0755
+ options[:preserve] = true if options.delete :p
+ dest = argv.pop
+ argv = argv[0] if argv.size == 1
+ FileUtils.install argv, dest, options
+ end
+end
+
+##
+# Change the mode of each FILE to OCTAL-MODE.
+#
+# ruby -run -e chmod -- [OPTION] OCTAL-MODE FILE
+#
+# -v verbose
+#
+
+def chmod
+ setup do |argv, options|
+ mode = argv.shift.oct
+ FileUtils.chmod mode, argv, options
+ end
+end
+
+##
+# Update the access and modification times of each FILE to the current time.
+#
+# ruby -run -e touch -- [OPTION] FILE
+#
+# -v verbose
+#
+
+def touch
+ setup do |argv, options|
+ FileUtils.touch argv, options
+ end
+end
+
+##
+# Display help message.
+#
+# ruby -run -e help [COMMAND]
+#
+
+def help
+ setup do |argv,|
+ all = argv.empty?
+ open(__FILE__) do |me|
+ while me.gets("##\n")
+ if help = me.gets("\n\n")
+ if all or argv.delete help[/-e \w+/].sub(/-e /, "")
+ print help.gsub(/^# ?/, "")
+ end
+ end
+ end
+ end
+ end
+end