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