1 files changed, 64 insertions, 0 deletions
diff --git a/trunk/lib/rdoc/template.rb b/trunk/lib/rdoc/template.rb
new file mode 100644
index 0000000000..53d0e3ce68
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+++ b/trunk/lib/rdoc/template.rb
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+require 'erb'
+
+module RDoc; end
+
+##
+# An ERb wrapper that allows nesting of one ERb template inside another.
+#
+# This TemplatePage operates similarly to RDoc 1.x's TemplatePage, but uses
+# ERb instead of a custom template language.
+#
+# Converting from a RDoc 1.x template to an RDoc 2.x template is fairly easy.
+#
+# * %blah% becomes <%= values["blah"] %>
+# * !INCLUDE! becomes <%= template_include %>
+# * HREF:aref:name becomes <%= href values["aref"], values["name"] %>
+# * IF:blah becomes <% if values["blah"] then %>
+# * IFNOT:blah becomes <% unless values["blah"] then %>
+# * ENDIF:blah becomes <% end %>
+# * START:blah becomes <% values["blah"].each do |blah| %>
+# * END:blah becomes <% end %>
+#
+# To make nested loops easier to convert, start by converting START statements
+# to:
+#
+#   <% values["blah"].each do |blah| $stderr.puts blah.keys %>
+#
+# So you can see what is being used inside which loop.
+
+class RDoc::TemplatePage
+
+  ##
+  # Create a new TemplatePage that will use +templates+.
+
+  def initialize(*templates)
+    @templates = templates
+  end
+
+  ##
+  # Returns "<a href=\"#{ref}\">#{name}</a>"
+
+  def href(ref, name)
+    if ref then
+      "<a href=\"#{ref}\">#{name}</a>"
+    else
+      name
+    end
+  end
+
+  ##
+  # Process the template using +values+, writing the result to +io+.
+
+  def write_html_on(io, values)
+    b = binding
+    template_include = ""
+
+    @templates.reverse_each do |template|
+      template_include = ERB.new(template).result b
+    end
+
+    io.write template_include
+  end
+
+end
+