more work

pipeline/jinja2/ext.py

@@ -3,11 +3,58 @@ try:
 except ImportError:
     from django.contrib.staticfiles.storage import staticfiles_storage  # noqa
 
+from jinja2 import nodes
 from jinja2.ext import Extension
 
+from pipeline.conf import settings
+from pipeline.packager import Packager, PackageNotFound
+
 
 class PipelineExtension(Extension):
     tags = set(['compressed_css', 'compressed_js'])
 
     def parse(self, parser):
+        stream = parser.stream
+        tag = stream.next()
+        if stream.current.test('string'):
+            if stream.look().test('string'):
+                token = stream.next()
+                package_name = nodes.Const(token.value, lineno=token.lineno)
+            else:
+                package_name = parser.parse_expression()
+
+        if tag.value == "compressed_css":
+            return self.package_css(package_name)
+
+        if tag.value == "compressed_js":
+            return self.package_js(package_name)
+
         return []
+
+    def package_css(self, package_name):
+        package = settings.PIPELINE_CSS.get(package_name, {})
+        if package:
+            package = {package_name: package}
+        packager = Packager(css_packages=package, js_packages={})
+
+        try:
+            package = packager.package_for('css', package_name)
+        except PackageNotFound:
+            return ''  # fail silently, do not return anything if an invalid group is specified
+
+        if settings.PIPELINE:
+            return self.render_css(package, package.output_filename)
+        else:
+            paths = packager.compile(package.paths)
+            return self.render_individual(package, paths)
+
+    def render_css(self, package, path):
+        print "render"
+        return
+
+    def render_individual(self, package, paths):
+        print "render"
+        return
+
+    def package_js(self, package_name):
+        return