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ruby20
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lib64
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2.0.0
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rake
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require 'rake/file_utils' module Rake # # FileUtilsExt provides a custom version of the FileUtils methods # that respond to the <tt>verbose</tt> and <tt>nowrite</tt> # commands. # module FileUtilsExt include FileUtils class << self attr_accessor :verbose_flag, :nowrite_flag end DEFAULT = Object.new FileUtilsExt.verbose_flag = DEFAULT FileUtilsExt.nowrite_flag = false $fileutils_verbose = true $fileutils_nowrite = false FileUtils.commands.each do |name| opts = FileUtils.options_of name default_options = [] if opts.include?("verbose") default_options << ':verbose => FileUtilsExt.verbose_flag' end if opts.include?("noop") default_options << ':noop => FileUtilsExt.nowrite_flag' end next if default_options.empty? module_eval(<<-EOS, __FILE__, __LINE__ + 1) def #{name}( *args, &block ) super( *rake_merge_option(args, #{default_options.join(', ')} ), &block) end EOS end # Get/set the verbose flag controlling output from the FileUtils # utilities. If verbose is true, then the utility method is # echoed to standard output. # # Examples: # verbose # return the current value of the # # verbose flag # verbose(v) # set the verbose flag to _v_. # verbose(v) { code } # Execute code with the verbose flag set # # temporarily to _v_. Return to the # # original value when code is done. def verbose(value=nil) oldvalue = FileUtilsExt.verbose_flag FileUtilsExt.verbose_flag = value unless value.nil? if block_given? begin yield ensure FileUtilsExt.verbose_flag = oldvalue end end FileUtilsExt.verbose_flag end # Get/set the nowrite flag controlling output from the FileUtils # utilities. If verbose is true, then the utility method is # echoed to standard output. # # Examples: # nowrite # return the current value of the # # nowrite flag # nowrite(v) # set the nowrite flag to _v_. # nowrite(v) { code } # Execute code with the nowrite flag set # # temporarily to _v_. Return to the # # original value when code is done. def nowrite(value=nil) oldvalue = FileUtilsExt.nowrite_flag FileUtilsExt.nowrite_flag = value unless value.nil? if block_given? begin yield ensure FileUtilsExt.nowrite_flag = oldvalue end end oldvalue end # Use this function to prevent potentially destructive ruby code # from running when the :nowrite flag is set. # # Example: # # when_writing("Building Project") do # project.build # end # # The following code will build the project under normal # conditions. If the nowrite(true) flag is set, then the example # will print: # # DRYRUN: Building Project # # instead of actually building the project. # def when_writing(msg=nil) if FileUtilsExt.nowrite_flag $stderr.puts "DRYRUN: #{msg}" if msg else yield end end # Merge the given options with the default values. def rake_merge_option(args, defaults) if Hash === args.last defaults.update(args.last) args.pop end args.push defaults args end # Send the message to the default rake output (which is $stderr). def rake_output_message(message) $stderr.puts(message) end # Check that the options do not contain options not listed in # +optdecl+. An ArgumentError exception is thrown if non-declared # options are found. def rake_check_options(options, *optdecl) h = options.dup optdecl.each do |name| h.delete name end raise ArgumentError, "no such option: #{h.keys.join(' ')}" unless h.empty? end extend self end end
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