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from django.core.exceptions import ImproperlyConfigured
from compressor.filters import FilterBase, CallbackOutputFilter
class rJSMinFilter(CallbackOutputFilter):
callback = "rjsmin.jsmin"
dependencies = ["rjsmin"]
kwargs = {"keep_bang_comments": True}
# This is for backwards compatibility
JSMinFilter = rJSMinFilter
class CalmjsFilter(FilterBase):
def __init__(self, *args, **kwargs):
try:
self._parser = kwargs.pop("parser")
except KeyError:
self._parser = None
try:
self._unparser = kwargs.pop("unparser")
except KeyError:
self._unparser = None
super().__init__(*args, **kwargs)
try:
import calmjs.parse
except ImportError:
raise ImproperlyConfigured(
"The module calmjs.parse couldn't be imported. "
"Make sure it is correctly installed."
)
if self._parser is None:
self._parser = calmjs.parse.es5
if self._unparser is None:
self._unparser = calmjs.parse.unparsers.es5.minify_printer(obfuscate=True)
def output(self, **kwargs):
program = self._parser(self.content)
minified = "".join(part.text for part in self._unparser(program))
assert isinstance(minified, str)
return minified
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