template tags now only load the package they need instead of all packages every time

Signed-off-by: Timothée Peignier <timothee.peignier@tryphon.org>

pipeline/packager.py

@@ -11,15 +11,19 @@ from pipeline.versioning import Versioning
 
 
 class Packager(object):
-    def __init__(self, force=False, verbose=False):
+    def __init__(self, force=False, verbose=False, css_packages=None, js_packages=None):
         self.force = force
         self.verbose = verbose
         self.compressor = Compressor(verbose)
         self.versioning = Versioning(verbose)
         self.compiler = Compiler(verbose)
+        if css_packages is None:
+            css_packages = settings.PIPELINE_CSS
+        if js_packages is None:
+            js_packages = settings.PIPELINE_JS
         self.packages = {
-            'css': self.create_packages(settings.PIPELINE_CSS),
-            'js': self.create_packages(settings.PIPELINE_JS),
+            'css': self.create_packages(css_packages),
+            'js': self.create_packages(js_packages),
         }
 
     def package_for(self, kind, package_name):

pipeline/templatetags/compressed.py

@@ -10,10 +10,14 @@ register = template.Library()
 class CompressedCSSNode(template.Node):
     def __init__(self, name):
         self.name = name
-        self.packager = Packager()
 
     def render(self, context):
         package_name = template.Variable(self.name).resolve(context)
+        package = settings.PIPELINE_CSS.get(package_name, {})
+        if package:
+            package = {package_name: package}
+        self.packager = Packager(css_packages=package, js_packages={})
+
         try:
             package = self.packager.package_for('css', package_name)
         except PackageNotFound:
@@ -45,10 +49,14 @@ class CompressedCSSNode(template.Node):
 class CompressedJSNode(template.Node):
     def __init__(self, name):
         self.name = name
-        self.packager = Packager()
 
     def render(self, context):
         package_name = template.Variable(self.name).resolve(context)
+        package = settings.PIPELINE_JS.get(package_name, {})
+        if package:
+            package = {package_name: package}
+        self.packager = Packager(css_packages={}, js_packages=package)
+
         try:
             package = self.packager.package_for('js', package_name)
         except PackageNotFound: