add mimetypes in compressed templatetag output

pipeline/conf/settings.py

@@ -48,5 +48,10 @@ PIPELINE_STYLUS_ARGUMENTS = getattr(settings, 'PIPELINE_STYLUS_ARGUMENTS', '')
 PIPELINE_LESS_BINARY = getattr(settings, 'PIPELINE_LESS_BINARY', '/usr/local/bin/lessc')
 PIPELINE_LESS_ARGUMENTS = getattr(settings, 'PIPELINE_LESS_ARGUMENTS', '')
 
+PIPELINE_MIMETYPES = getattr(settings, 'PIPELINE_MIMETYPES', (
+    ('text/coffeescript', '.coffee'),
+    ('text/less', '.less'),
+))
+
 if PIPELINE_COMPILERS is None:
     PIPELINE_COMPILERS = []

pipeline/templates/pipeline/css.html

-<link href="{{ url }}" rel="stylesheet" type="text/css"{% if media %} media="{{ media }}"{% endif %}{% if title %} title="{{ title|default:"all" }}"{% endif %}{% if charset %} charset="{{ charset }}"{% endif %} />
\ No newline at end of file
+<link href="{{ url }}" rel="stylesheet" type="{{ type }}"{% if media %} media="{{ media }}"{% endif %}{% if title %} title="{{ title|default:"all" }}"{% endif %}{% if charset %} charset="{{ charset }}"{% endif %} />
\ No newline at end of file

pipeline/templates/pipeline/js.html

-<script {% if async %}async{% endif %} {% if defer %}defer{% endif %} type="text/javascript" src="{{ url }}" charset="utf-8"></script>
\ No newline at end of file
+<script {% if async %}async{% endif %} {% if defer %}defer{% endif %} type="{{ type }}" src="{{ url }}" charset="utf-8"></script>
\ No newline at end of file

pipeline/templatetags/compressed.py

@@ -8,6 +8,7 @@ from django.template.loader import render_to_string
 
 from pipeline.conf import settings
 from pipeline.packager import Packager, PackageNotFound
+from pipeline.utils import guess_type
 
 register = template.Library()
 
@@ -38,6 +39,7 @@ class CompressedCSSNode(template.Node):
         template_name = package.template_name or "pipeline/css.html"
         context = package.extra_context
         context.update({
+            'type': guess_type(path, 'text/css'),
             'url': staticfiles_storage.url(path)
         })
         return render_to_string(template_name, context)
@@ -74,6 +76,7 @@ class CompressedJSNode(template.Node):
         template_name = package.template_name or "pipeline/js.html"
         context = package.extra_context
         context.update({
+            'type': guess_type(path, 'text/javascript'),
             'url': staticfiles_storage.url(path)
         })
         return render_to_string(template_name, context)

pipeline/utils.py

+import mimetypes
 import os
 import sys
 import urllib
@@ -5,6 +6,8 @@ import urllib
 from django.utils import importlib
 from django.utils.encoding import smart_str
 
+from pipeline.conf import settings
+
 
 def to_class(class_str):
     if not class_str:
@@ -22,6 +25,15 @@ def filepath_to_uri(path):
     return urllib.quote(smart_str(path).replace("\\", "/"), safe="/~!*()'#?")
 
 
+def guess_type(path, default=None):
+    for type, ext in settings.PIPELINE_MIMETYPES:
+        mimetypes.add_type(type, ext, strict=False)
+    mimetype, _ = mimetypes.guess_type(path, strict=False)
+    if not mimetype:
+        return default
+    return mimetype
+
+
 def _relpath_nt(path, start=os.path.curdir):
     """Return a relative version of a path"""
     if not path:

tests/tests/__init__.py

@@ -3,3 +3,4 @@ from packager import *
 from compressor import *
 from compiler import *
 from storage import *
+from utils import *

tests/tests/utils.py

+# -*- coding: utf-8 -*-
+from django.test import TestCase
+
+from pipeline.utils import guess_type
+
+
+class UtilTest(TestCase):
+    def test_guess_type(self):
+        self.assertEqual('text/css', guess_type('stylesheet.css'))
+        self.assertEqual('text/coffeescript', guess_type('application.coffee'))
+        self.assertEqual('text/less', guess_type('stylesheet.less'))