Prepared buildtools for Safari

packager.py

Index: packager.py
===================================================================
--- a/packager.py
+++ b/packager.py
@@ -113,6 +113,25 @@
       else:
         print >>sys.stderr, 'Warning: Mapped file %s doesn\'t exist' % source
 
+  def preprocess(self, filenames, params={}):
+    import jinja2
+
+    env = jinja2.Environment(
+      # TODO: Make the first run page generated on all platforms and get
+      # rid of the HTML comment syntax, wrapped around the jinja syntax.
+      block_start_string='<!-- {%',
+      block_end_string='%} -->',
+      variable_start_string='<!-- {{',
+      variable_end_string='}} -->',
+      comment_start_string='<-- {#',
+      comment_end_string='#} -->'
+    )
+
+    for filename in filenames:
+      env.autoescape = os.path.splitext(filename) in ('.html', '.xml')
+      template = env.from_string(self[filename].decode('utf-8'))
+      self[filename] = template.render(params).encode('utf-8')
+
   def zip(self, outFile, sortKey=None):
     zip = zipfile.ZipFile(outFile, 'w', zipfile.ZIP_DEFLATED)
     names = self.keys()