52 lines
2.4 KiB
Python
52 lines
2.4 KiB
Python
from compressor.base import Compressor, SOURCE_HUNK, SOURCE_FILE
|
|
from compressor.conf import settings
|
|
|
|
|
|
class CssCompressor(Compressor):
|
|
|
|
def __init__(self, content=None, output_prefix="css", context=None):
|
|
filters = list(settings.COMPRESS_CSS_FILTERS)
|
|
super(CssCompressor, self).__init__(content, output_prefix, context, filters)
|
|
|
|
def split_contents(self):
|
|
if self.split_content:
|
|
return self.split_content
|
|
self.media_nodes = []
|
|
for elem in self.parser.css_elems():
|
|
data = None
|
|
elem_name = self.parser.elem_name(elem)
|
|
elem_attribs = self.parser.elem_attribs(elem)
|
|
if elem_name == 'link' and elem_attribs['rel'].lower() == 'stylesheet':
|
|
basename = self.get_basename(elem_attribs['href'])
|
|
filename = self.get_filename(basename)
|
|
data = (SOURCE_FILE, filename, basename, elem)
|
|
elif elem_name == 'style':
|
|
data = (SOURCE_HUNK, self.parser.elem_content(elem), None, elem)
|
|
if data:
|
|
self.split_content.append(data)
|
|
media = elem_attribs.get('media', None)
|
|
# Append to the previous node if it had the same media type
|
|
append_to_previous = self.media_nodes and self.media_nodes[-1][0] == media
|
|
# and we are not just precompiling, otherwise create a new node.
|
|
if append_to_previous and settings.COMPRESS_ENABLED:
|
|
self.media_nodes[-1][1].split_content.append(data)
|
|
else:
|
|
node = self.__class__(content=self.parser.elem_str(elem),
|
|
context=self.context)
|
|
node.split_content.append(data)
|
|
self.media_nodes.append((media, node))
|
|
return self.split_content
|
|
|
|
def output(self, *args, **kwargs):
|
|
if (settings.COMPRESS_ENABLED or settings.COMPRESS_PRECOMPILERS or
|
|
kwargs.get('forced', False)):
|
|
# Populate self.split_content
|
|
self.split_contents()
|
|
if hasattr(self, 'media_nodes'):
|
|
ret = []
|
|
for media, subnode in self.media_nodes:
|
|
subnode.extra_context.update({'media': media})
|
|
ret.append(subnode.output(*args, **kwargs))
|
|
return ''.join(ret)
|
|
return super(CssCompressor, self).output(*args, **kwargs)
|