1 files changed, 115 insertions, 0 deletions
diff --git a/activesupport/lib/active_support/vendor/builder-2.1.2/builder/xchar.rb b/activesupport/lib/active_support/vendor/builder-2.1.2/builder/xchar.rb
new file mode 100644
index 0000000000..8bdbd05899
--- /dev/null
+++ b/activesupport/lib/active_support/vendor/builder-2.1.2/builder/xchar.rb
@@ -0,0 +1,115 @@
+#!/usr/bin/env ruby
+
+# The XChar library is provided courtesy of Sam Ruby (See
+# http://intertwingly.net/stories/2005/09/28/xchar.rb)
+
+# --------------------------------------------------------------------
+
+# If the Builder::XChar module is not currently defined, fail on any
+# name clashes in standard library classes.
+
+module Builder
+  def self.check_for_name_collision(klass, method_name, defined_constant=nil)
+    if klass.instance_methods.include?(method_name.to_s)
+      fail RuntimeError,
+	"Name Collision: Method '#{method_name}' is already defined in #{klass}"
+    end
+  end
+end
+
+if ! defined?(Builder::XChar)
+  Builder.check_for_name_collision(String, "to_xs")
+  Builder.check_for_name_collision(Fixnum, "xchr")
+end
+
+######################################################################
+module Builder
+
+  ####################################################################
+  # XML Character converter, from Sam Ruby:
+  # (see http://intertwingly.net/stories/2005/09/28/xchar.rb).
+  #
+  module XChar # :nodoc:
+
+    # See
+    # http://intertwingly.net/stories/2004/04/14/i18n.html#CleaningWindows
+    # for details.
+    CP1252 = {			# :nodoc:
+      128 => 8364,		# euro sign
+      130 => 8218,		# single low-9 quotation mark
+      131 =>  402,		# latin small letter f with hook
+      132 => 8222,		# double low-9 quotation mark
+      133 => 8230,		# horizontal ellipsis
+      134 => 8224,		# dagger
+      135 => 8225,		# double dagger
+      136 =>  710,		# modifier letter circumflex accent
+      137 => 8240,		# per mille sign
+      138 =>  352,		# latin capital letter s with caron
+      139 => 8249,		# single left-pointing angle quotation mark
+      140 =>  338,		# latin capital ligature oe
+      142 =>  381,		# latin capital letter z with caron
+      145 => 8216,		# left single quotation mark
+      146 => 8217,		# right single quotation mark
+      147 => 8220,		# left double quotation mark
+      148 => 8221,		# right double quotation mark
+      149 => 8226,		# bullet
+      150 => 8211,		# en dash
+      151 => 8212,		# em dash
+      152 =>  732,		# small tilde
+      153 => 8482,		# trade mark sign
+      154 =>  353,		# latin small letter s with caron
+      155 => 8250,		# single right-pointing angle quotation mark
+      156 =>  339,		# latin small ligature oe
+      158 =>  382,		# latin small letter z with caron
+      159 =>  376,		# latin capital letter y with diaeresis
+    }
+
+    # See http://www.w3.org/TR/REC-xml/#dt-chardata for details.
+    PREDEFINED = {
+      38 => '&amp;',		# ampersand
+      60 => '&lt;',		# left angle bracket
+      62 => '&gt;',		# right angle bracket
+    }
+
+    # See http://www.w3.org/TR/REC-xml/#charsets for details.
+    VALID = [
+      0x9, 0xA, 0xD,
+      (0x20..0xD7FF),
+      (0xE000..0xFFFD),
+      (0x10000..0x10FFFF)
+    ]
+  end
+
+end
+
+
+######################################################################
+# Enhance the Fixnum class with a XML escaped character conversion.
+#
+class Fixnum
+  XChar = Builder::XChar if ! defined?(XChar)
+
+  # XML escaped version of chr
+  def xchr
+    n = XChar::CP1252[self] || self
+    case n when *XChar::VALID
+      XChar::PREDEFINED[n] or (n<128 ? n.chr : "&##{n};")
+    else
+      '*'
+    end
+  end
+end
+
+
+######################################################################
+# Enhance the String class with a XML escaped character version of
+# to_s.
+#
+class String
+  # XML escaped version of to_s
+  def to_xs
+    unpack('U*').map {|n| n.xchr}.join # ASCII, UTF-8
+  rescue
+    unpack('C*').map {|n| n.xchr}.join # ISO-8859-1, WIN-1252
+  end
+end