From 0dc342de848a642ecce8db697b8fecd83a63e117 Mon Sep 17 00:00:00 2001
From: yugui <yugui@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
Date: Mon, 25 Aug 2008 15:02:05 +0000
Subject: added tag v1_9_0_4

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/tags/v1_9_0_4@18845 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
---
 trunk/lib/erb.rb | 828 +++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 828 insertions(+)
 create mode 100644 trunk/lib/erb.rb

(limited to 'trunk/lib/erb.rb')

diff --git a/trunk/lib/erb.rb b/trunk/lib/erb.rb
new file mode 100644
index 0000000000..c879941284
--- /dev/null
+++ b/trunk/lib/erb.rb
@@ -0,0 +1,828 @@
+# = ERB -- Ruby Templating
+#
+# Author:: Masatoshi SEKI
+# Documentation:: James Edward Gray II and Gavin Sinclair
+#
+# See ERB for primary documentation and ERB::Util for a couple of utility
+# routines.
+#
+# Copyright (c) 1999-2000,2002,2003 Masatoshi SEKI
+#
+# You can redistribute it and/or modify it under the same terms as Ruby.
+
+#
+# = ERB -- Ruby Templating
+#
+# == Introduction
+#
+# ERB provides an easy to use but powerful templating system for Ruby.  Using
+# ERB, actual Ruby code can be added to any plain text document for the
+# purposes of generating document information details and/or flow control.
+#
+# A very simple example is this:
+# 
+#   require 'erb'
+#
+#   x = 42
+#   template = ERB.new <<-EOF
+#     The value of x is: <%= x %>
+#   EOF
+#   puts template.result(binding)
+#
+# <em>Prints:</em> The value of x is: 42
+#
+# More complex examples are given below.
+#
+#
+# == Recognized Tags
+#
+# ERB recognizes certain tags in the provided template and converts them based
+# on the rules below:
+#
+#   <% Ruby code -- inline with output %>
+#   <%= Ruby expression -- replace with result %>
+#   <%# comment -- ignored -- useful in testing %>
+#   % a line of Ruby code -- treated as <% line %> (optional -- see ERB.new)
+#   %% replaced with % if first thing on a line and % processing is used
+#   <%% or %%> -- replace with <% or %> respectively
+#
+# All other text is passed through ERB filtering unchanged.
+#
+#
+# == Options
+#
+# There are several settings you can change when you use ERB:
+# * the nature of the tags that are recognized;
+# * the value of <tt>$SAFE</tt> under which the template is run;
+# * the binding used to resolve local variables in the template.
+#
+# See the ERB.new and ERB#result methods for more detail.
+#
+#
+# == Examples
+#
+# === Plain Text
+#
+# ERB is useful for any generic templating situation.  Note that in this example, we use the
+# convenient "% at start of line" tag, and we quote the template literally with
+# <tt>%q{...}</tt> to avoid trouble with the backslash.
+#
+#   require "erb"
+#   
+#   # Create template.
+#   template = %q{
+#     From:  James Edward Gray II <james@grayproductions.net>
+#     To:  <%= to %>
+#     Subject:  Addressing Needs
+#   
+#     <%= to[/\w+/] %>:
+#   
+#     Just wanted to send a quick note assuring that your needs are being
+#     addressed.
+#   
+#     I want you to know that my team will keep working on the issues,
+#     especially:
+#   
+#     <%# ignore numerous minor requests -- focus on priorities %>
+#     % priorities.each do |priority|
+#       * <%= priority %>
+#     % end
+#   
+#     Thanks for your patience.
+#   
+#     James Edward Gray II
+#   }.gsub(/^  /, '')
+#   
+#   message = ERB.new(template, 0, "%<>")
+#   
+#   # Set up template data.
+#   to = "Community Spokesman <spokesman@ruby_community.org>"
+#   priorities = [ "Run Ruby Quiz",
+#                  "Document Modules",
+#                  "Answer Questions on Ruby Talk" ]
+#   
+#   # Produce result.
+#   email = message.result
+#   puts email
+#
+# <i>Generates:</i>
+#
+#   From:  James Edward Gray II <james@grayproductions.net>
+#   To:  Community Spokesman <spokesman@ruby_community.org>
+#   Subject:  Addressing Needs
+#   
+#   Community:
+#   
+#   Just wanted to send a quick note assuring that your needs are being addressed.
+#   
+#   I want you to know that my team will keep working on the issues, especially:
+#   
+#       * Run Ruby Quiz
+#       * Document Modules
+#       * Answer Questions on Ruby Talk
+#   
+#   Thanks for your patience.
+#   
+#   James Edward Gray II
+#
+# === Ruby in HTML
+#
+# ERB is often used in <tt>.rhtml</tt> files (HTML with embedded Ruby).  Notice the need in
+# this example to provide a special binding when the template is run, so that the instance
+# variables in the Product object can be resolved.
+#
+#   require "erb"
+#   
+#   # Build template data class.
+#   class Product
+#     def initialize( code, name, desc, cost )
+#       @code = code
+#       @name = name
+#       @desc = desc
+#       @cost = cost
+#        	
+#       @features = [ ]
+#     end
+#   
+#     def add_feature( feature )
+#       @features << feature
+#     end
+#   
+#     # Support templating of member data.
+#     def get_binding
+#       binding
+#     end
+#   
+#     # ...
+#   end
+#   
+#   # Create template.
+#   template = %{
+#     <html>
+#       <head><title>Ruby Toys -- <%= @name %></title></head>
+#       <body>
+#   
+#         <h1><%= @name %> (<%= @code %>)</h1>
+#         <p><%= @desc %></p>
+#   
+#         <ul>
+#           <% @features.each do |f| %>
+#             <li><b><%= f %></b></li>
+#           <% end %>
+#         </ul>
+#   
+#         <p>
+#           <% if @cost < 10 %>
+#             <b>Only <%= @cost %>!!!</b>
+#           <% else %>
+#              Call for a price, today!
+#           <% end %>
+#         </p>
+#    
+#       </body>
+#     </html>
+#   }.gsub(/^  /, '')
+#   
+#   rhtml = ERB.new(template)
+#   
+#   # Set up template data.
+#   toy = Product.new( "TZ-1002",
+#                      "Rubysapien",
+#                      "Geek's Best Friend!  Responds to Ruby commands...",
+#                      999.95 )
+#   toy.add_feature("Listens for verbal commands in the Ruby language!")
+#   toy.add_feature("Ignores Perl, Java, and all C variants.")
+#   toy.add_feature("Karate-Chop Action!!!")
+#   toy.add_feature("Matz signature on left leg.")
+#   toy.add_feature("Gem studded eyes... Rubies, of course!")
+#   
+#   # Produce result.
+#   rhtml.run(toy.get_binding)
+#
+# <i>Generates (some blank lines removed):</i>
+#
+#    <html>
+#      <head><title>Ruby Toys -- Rubysapien</title></head>
+#      <body>
+#    
+#        <h1>Rubysapien (TZ-1002)</h1>
+#        <p>Geek's Best Friend!  Responds to Ruby commands...</p>
+#    
+#        <ul>
+#            <li><b>Listens for verbal commands in the Ruby language!</b></li>
+#            <li><b>Ignores Perl, Java, and all C variants.</b></li>
+#            <li><b>Karate-Chop Action!!!</b></li>
+#            <li><b>Matz signature on left leg.</b></li>
+#            <li><b>Gem studded eyes... Rubies, of course!</b></li>
+#        </ul>
+#    
+#        <p>
+#             Call for a price, today!
+#        </p>
+#    
+#      </body>
+#    </html>
+#
+# 
+# == Notes
+#
+# There are a variety of templating solutions available in various Ruby projects:
+# * ERB's big brother, eRuby, works the same but is written in C for speed;
+# * Amrita (smart at producing HTML/XML);
+# * cs/Template (written in C for speed);
+# * RDoc, distributed with Ruby, uses its own template engine, which can be reused elsewhere;
+# * and others; search the RAA.
+#
+# Rails, the web application framework, uses ERB to create views.
+#
+class ERB
+  Revision = '$Date::                           $' 	#'
+
+  # Returns revision information for the erb.rb module.
+  def self.version
+    "erb.rb [2.0.4 #{ERB::Revision.split[1]}]"
+  end
+end
+
+#--
+# ERB::Compiler
+class ERB
+  class Compiler # :nodoc:
+    class PercentLine # :nodoc:
+      def initialize(str)
+        @value = str
+      end
+      attr_reader :value
+      alias :to_s :value
+    end
+
+    class Scanner # :nodoc:
+      SplitRegexp = /(<%%)|(%%>)|(<%=)|(<%#)|(<%)|(%>)|(\n)/
+
+      @scanner_map = {}
+      def self.regist_scanner(klass, trim_mode, percent)
+	@scanner_map[[trim_mode, percent]] = klass
+      end
+
+      def self.default_scanner=(klass)
+	@default_scanner = klass
+      end
+
+      def self.make_scanner(src, trim_mode, percent)
+	klass = @scanner_map.fetch([trim_mode, percent], @default_scanner)
+	klass.new(src, trim_mode, percent)
+      end
+
+      def initialize(src, trim_mode, percent)
+	@src = src
+	@stag = nil
+      end
+      attr_accessor :stag
+
+      def scan; end
+    end
+
+    class TrimScanner < Scanner # :nodoc:
+      TrimSplitRegexp = /(<%%)|(%%>)|(<%=)|(<%#)|(<%)|(%>\n)|(%>)|(\n)/
+
+      def initialize(src, trim_mode, percent)
+	super
+	@trim_mode = trim_mode
+	@percent = percent
+	if @trim_mode == '>'
+	  @scan_line = self.method(:trim_line1)
+	elsif @trim_mode == '<>'
+	  @scan_line = self.method(:trim_line2)
+	elsif @trim_mode == '-'
+	  @scan_line = self.method(:explicit_trim_line)
+	else
+	  @scan_line = self.method(:scan_line)
+	end
+      end
+      attr_accessor :stag
+      
+      def scan(&block)
+	@stag = nil
+	if @percent
+	  @src.each_line do |line|
+	    percent_line(line, &block)
+	  end
+	else
+	  @src.each_line do |line|
+	    @scan_line.call(line, &block)
+	  end
+	end
+	nil
+      end
+
+      def percent_line(line, &block)
+	if @stag || line[0] != ?%
+	  return @scan_line.call(line, &block)
+	end
+
+	line[0] = ''
+	if line[0] == ?%
+	  @scan_line.call(line, &block)
+	else
+          yield(PercentLine.new(line.chomp))
+	end
+      end
+
+      def scan_line(line)
+	line.split(SplitRegexp).each do |token|
+	  next if token.empty?
+	  yield(token)
+	end
+      end
+
+      def trim_line1(line)
+	line.split(TrimSplitRegexp).each do |token|
+	  next if token.empty?
+	  if token == "%>\n"
+	    yield('%>')
+	    yield(:cr)
+	    break
+	  end
+	  yield(token)
+	end
+      end
+
+      def trim_line2(line)
+	head = nil
+	line.split(TrimSplitRegexp).each do |token|
+	  next if token.empty?
+	  head = token unless head
+	  if token == "%>\n"
+	    yield('%>')
+	    if  is_erb_stag?(head)
+	      yield(:cr)
+	    else
+	      yield("\n")
+	    end
+	    break
+	  end
+	  yield(token)
+	end
+      end
+
+      ExplicitTrimRegexp = /(^[ \t]*<%-)|(-%>\n?\z)|(<%-)|(-%>)|(<%%)|(%%>)|(<%=)|(<%#)|(<%)|(%>)|(\n)/
+      def explicit_trim_line(line)
+	line.split(ExplicitTrimRegexp).each do |token|
+	  next if token.empty?
+	  if @stag.nil? && /[ \t]*<%-/ =~ token
+	    yield('<%')
+	  elsif @stag && /-%>\n/ =~ token
+	    yield('%>')
+	    yield(:cr)
+	  elsif @stag && token == '-%>'
+	    yield('%>')
+	  else
+	    yield(token)
+	  end
+	end
+      end
+
+      ERB_STAG = %w(<%= <%# <%)
+      def is_erb_stag?(s)
+	ERB_STAG.member?(s)
+      end
+    end
+
+    Scanner.default_scanner = TrimScanner
+
+    class SimpleScanner < Scanner # :nodoc:
+      def scan
+	@src.each_line do |line|
+	  line.split(SplitRegexp).each do |token|
+	    next if token.empty?
+	    yield(token)
+	  end
+	end
+      end
+    end
+    
+    Scanner.regist_scanner(SimpleScanner, nil, false)
+
+    begin
+      require 'strscan'
+      class SimpleScanner2 < Scanner # :nodoc:
+        def scan
+          stag_reg = /(.*?)(<%%|<%=|<%#|<%|\n|\z)/
+          etag_reg = /(.*?)(%%>|%>|\n|\z)/
+          scanner = StringScanner.new(@src)
+          while ! scanner.eos?
+            scanner.scan(@stag ? etag_reg : stag_reg)
+            text = scanner[1]
+            elem = scanner[2]
+            yield(text) unless text.empty?
+            yield(elem) unless elem.empty?
+          end
+        end
+      end
+      Scanner.regist_scanner(SimpleScanner2, nil, false)
+
+      class PercentScanner < Scanner # :nodoc:
+	def scan
+	  new_line = true
+          stag_reg = /(.*?)(<%%|<%=|<%#|<%|\n|\z)/
+          etag_reg = /(.*?)(%%>|%>|\n|\z)/
+          scanner = StringScanner.new(@src)
+          while ! scanner.eos?
+	    if new_line && @stag.nil?
+	      if scanner.scan(/%%/)
+		yield('%')
+		new_line = false
+		next
+	      elsif scanner.scan(/%/)
+		yield(PercentLine.new(scanner.scan(/.*?(\n|\z)/).chomp))
+		next
+	      end
+	    end
+	    scanner.scan(@stag ? etag_reg : stag_reg)
+            text = scanner[1]
+            elem = scanner[2]
+            yield(text) unless text.empty?
+            yield(elem) unless elem.empty?
+	    new_line = (elem == "\n")
+          end
+        end
+      end
+      Scanner.regist_scanner(PercentScanner, nil, true)
+
+      class ExplicitScanner < Scanner # :nodoc:
+	def scan
+	  new_line = true
+          stag_reg = /(.*?)(<%%|<%=|<%#|<%-|<%|\n|\z)/
+          etag_reg = /(.*?)(%%>|-%>|%>|\n|\z)/
+          scanner = StringScanner.new(@src)
+          while ! scanner.eos?
+	    if new_line && @stag.nil? && scanner.scan(/[ \t]*<%-/)
+	      yield('<%')
+	      new_line = false
+	      next
+	    end
+	    scanner.scan(@stag ? etag_reg : stag_reg)
+            text = scanner[1]
+            elem = scanner[2]
+	    new_line = (elem == "\n")
+            yield(text) unless text.empty?
+	    if elem == '-%>'
+	      yield('%>')
+	      if scanner.scan(/(\n|\z)/)
+		yield(:cr)
+		new_line = true
+	      end
+	    elsif elem == '<%-'
+	      yield('<%')
+	    else
+	      yield(elem) unless elem.empty?
+	    end
+          end
+        end
+      end
+      Scanner.regist_scanner(ExplicitScanner, '-', false)
+
+    rescue LoadError
+    end
+
+    class Buffer # :nodoc:
+      def initialize(compiler, enc=nil)
+	@compiler = compiler
+	@line = []
+        @script = enc ? "#coding:#{enc.to_s}\n" : ""
+	@compiler.pre_cmd.each do |x|
+	  push(x)
+	end
+      end
+      attr_reader :script
+
+      def push(cmd)
+	@line << cmd
+      end
+      
+      def cr
+	@script << (@line.join('; '))
+	@line = []
+	@script << "\n"
+      end
+      
+      def close
+	return unless @line
+	@compiler.post_cmd.each do |x|
+	  push(x)
+	end
+	@script << (@line.join('; '))
+	@line = nil
+      end
+    end
+
+    def compile(s)
+      out = Buffer.new(self, s.encoding)
+
+      content = ''
+      scanner = make_scanner(s.dup.force_encoding("ASCII-8BIT"))
+      scanner.scan do |token|
+	if scanner.stag.nil?
+	  case token
+          when PercentLine
+	    out.push("#{@put_cmd} #{content.dump}") if content.size > 0
+	    content = ''
+            out.push(token.to_s)
+            out.cr
+	  when :cr
+	    out.cr
+	  when '<%', '<%=', '<%#'
+	    scanner.stag = token
+	    out.push("#{@put_cmd} #{content.dump}") if content.size > 0
+	    content = ''
+	  when "\n"
+	    content << "\n"
+	    out.push("#{@put_cmd} #{content.dump}")
+	    out.cr
+	    content = ''
+	  when '<%%'
+	    content << '<%'
+	  else
+	    content << token
+	  end
+	else
+	  case token
+	  when '%>'
+	    case scanner.stag
+	    when '<%'
+	      if content[-1] == ?\n
+		content.chop!
+		out.push(content)
+		out.cr
+	      else
+		out.push(content)
+	      end
+	    when '<%='
+	      out.push("#{@insert_cmd}((#{content}).to_s)")
+	    when '<%#'
+	      # out.push("# #{content.dump}")
+	    end
+	    scanner.stag = nil
+	    content = ''
+	  when '%%>'
+	    content << '%>'
+	  else
+	    content << token
+	  end
+	end
+      end
+      out.push("#{@put_cmd} #{content.dump}") if content.size > 0
+      out.close
+      out.script
+    end
+
+    def prepare_trim_mode(mode)
+      case mode
+      when 1
+	return [false, '>']
+      when 2
+	return [false, '<>']
+      when 0
+	return [false, nil]
+      when String
+	perc = mode.include?('%')
+	if mode.include?('-')
+	  return [perc, '-']
+	elsif mode.include?('<>')
+	  return [perc, '<>']
+	elsif mode.include?('>')
+	  return [perc, '>']
+	else
+	  [perc, nil]
+	end
+      else
+	return [false, nil]
+      end
+    end
+
+    def make_scanner(src)
+      Scanner.make_scanner(src, @trim_mode, @percent)
+    end
+
+    def initialize(trim_mode)
+      @percent, @trim_mode = prepare_trim_mode(trim_mode)
+      @put_cmd = 'print'
+      @insert_cmd = @put_cmd
+      @pre_cmd = []
+      @post_cmd = []
+    end
+    attr_reader :percent, :trim_mode
+    attr_accessor :put_cmd, :insert_cmd, :pre_cmd, :post_cmd
+  end
+end
+
+#--
+# ERB
+class ERB
+  #
+  # Constructs a new ERB object with the template specified in _str_.
+  # 
+  # An ERB object works by building a chunk of Ruby code that will output
+  # the completed template when run. If _safe_level_ is set to a non-nil value,
+  # ERB code will be run in a separate thread with <b>$SAFE</b> set to the
+  # provided level.
+  # 
+  # If _trim_mode_ is passed a String containing one or more of the following
+  # modifiers, ERB will adjust its code generation as listed:
+  # 
+  # 	%  enables Ruby code processing for lines beginning with %
+  # 	<> omit newline for lines starting with <% and ending in %>
+  # 	>  omit newline for lines ending in %>
+  # 
+  # _eoutvar_ can be used to set the name of the variable ERB will build up
+  # its output in.  This is useful when you need to run multiple ERB
+  # templates through the same binding and/or when you want to control where
+  # output ends up.  Pass the name of the variable to be used inside a String.
+  #
+  # === Example
+  #
+  #  require "erb"
+  #  
+  #  # build data class
+  #  class Listings
+  #    PRODUCT = { :name => "Chicken Fried Steak",
+  #                :desc => "A well messages pattie, breaded and fried.",
+  #                :cost => 9.95 }
+  #  
+  #    attr_reader :product, :price
+  #    
+  #    def initialize( product = "", price = "" )
+  #      @product = product
+  #      @price = price
+  #    end
+  #    
+  #    def build
+  #      b = binding
+  #      # create and run templates, filling member data variables
+  #      ERB.new(<<-'END_PRODUCT'.gsub(/^\s+/, ""), 0, "", "@product").result b
+  #        <%= PRODUCT[:name] %>
+  #        <%= PRODUCT[:desc] %>
+  #      END_PRODUCT
+  #      ERB.new(<<-'END_PRICE'.gsub(/^\s+/, ""), 0, "", "@price").result b
+  #        <%= PRODUCT[:name] %> -- <%= PRODUCT[:cost] %>
+  #        <%= PRODUCT[:desc] %>
+  #      END_PRICE
+  #    end
+  #  end
+  #  
+  #  # setup template data
+  #  listings = Listings.new
+  #  listings.build
+  #  
+  #  puts listings.product + "\n" + listings.price
+  #
+  # _Generates_
+  #
+  #  Chicken Fried Steak
+  #  A well messages pattie, breaded and fried.
+  #  
+  #  Chicken Fried Steak -- 9.95
+  #  A well messages pattie, breaded and fried.
+  #  
+  def initialize(str, safe_level=nil, trim_mode=nil, eoutvar='_erbout')
+    @safe_level = safe_level
+    compiler = ERB::Compiler.new(trim_mode)
+    set_eoutvar(compiler, eoutvar)
+    @src = compiler.compile(str)
+    @filename = nil
+  end
+
+  # The Ruby code generated by ERB
+  attr_reader :src
+
+  # The optional _filename_ argument passed to Kernel#eval when the ERB code
+  # is run
+  attr_accessor :filename
+
+  #
+  # Can be used to set _eoutvar_ as described in ERB#new.  It's probably easier
+  # to just use the constructor though, since calling this method requires the
+  # setup of an ERB _compiler_ object.
+  #
+  def set_eoutvar(compiler, eoutvar = '_erbout')
+    compiler.put_cmd = "#{eoutvar}.concat"
+    compiler.insert_cmd = "#{eoutvar}.concat"
+
+    cmd = []
+    cmd.push "#{eoutvar} = ''"
+    
+    compiler.pre_cmd = cmd
+
+    cmd = []
+    cmd.push(eoutvar)
+
+    compiler.post_cmd = cmd
+  end
+
+  # Generate results and print them. (see ERB#result)
+  def run(b=TOPLEVEL_BINDING)
+    print self.result(b)
+  end
+
+  #
+  # Executes the generated ERB code to produce a completed template, returning
+  # the results of that code.  (See ERB#new for details on how this process can
+  # be affected by _safe_level_.)
+  # 
+  # _b_ accepts a Binding or Proc object which is used to set the context of
+  # code evaluation.
+  #
+  def result(b=TOPLEVEL_BINDING)
+    if @safe_level
+      th = Thread.start { 
+	$SAFE = @safe_level
+	eval(@src, b, (@filename || '(erb)'), 0)
+      }
+      return th.value
+    else
+      return eval(@src, b, (@filename || '(erb)'), 0)
+    end
+  end
+
+  def def_method(mod, methodname, fname='(ERB)')  # :nodoc:
+    mod.module_eval("def #{methodname}\n" + self.src + "\nend\n", fname, -1)
+  end
+
+  def def_module(methodname='erb')  # :nodoc:
+    mod = Module.new
+    def_method(mod, methodname)
+    mod
+  end
+
+  def def_class(superklass=Object, methodname='result')  # :nodoc:
+    cls = Class.new(superklass)
+    def_method(cls, methodname)
+    cls
+  end
+end
+
+#--
+# ERB::Util
+class ERB
+  # A utility module for conversion routines, often handy in HTML generation.
+  module Util
+    public
+    #
+    # A utility method for escaping HTML tag characters in _s_.
+    # 
+    # 	require "erb"
+    # 	include ERB::Util
+    # 	
+    # 	puts html_escape("is a > 0 & a < 10?")
+    # 
+    # _Generates_
+    # 
+    # 	is a &gt; 0 &amp; a &lt; 10?
+    #
+    def html_escape(s)
+      s.to_s.gsub(/&/, "&amp;").gsub(/\"/, "&quot;").gsub(/>/, "&gt;").gsub(/</, "&lt;")
+    end
+    alias h html_escape
+    module_function :h
+    module_function :html_escape
+    
+    #
+    # A utility method for encoding the String _s_ as a URL.
+    # 
+    # 	require "erb"
+    # 	include ERB::Util
+    # 	
+    # 	puts url_encode("Programming Ruby:  The Pragmatic Programmer's Guide")
+    # 
+    # _Generates_
+    # 
+    # 	Programming%20Ruby%3A%20%20The%20Pragmatic%20Programmer%27s%20Guide
+    #
+    def url_encode(s)
+      s.to_s.dup.force_encoding("ASCII-8BIT").gsub(/[^a-zA-Z0-9_\-.]/n) {
+        sprintf("%%%02X", $&.unpack("C")[0])
+      }
+    end
+    alias u url_encode
+    module_function :u
+    module_function :url_encode
+  end
+end
+
+#--
+# ERB::DefMethod
+class ERB
+  module DefMethod  # :nodoc:
+    public
+    def def_erb_method(methodname, erb)
+      if erb.kind_of? String
+	fname = erb
+	File.open(fname) {|f| erb = ERB.new(f.read) }
+	erb.def_method(self, methodname, fname)
+      else
+	erb.def_method(self, methodname)
+      end
+    end
+    module_function :def_erb_method
+  end
+end
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