def output(self, mode='file', forced=False):
"""
The general output method, override in subclass if you need to do
any custom modification. Calls other mode specific methods or simply
returns the content directly.
"""
# First check whether we should do the full compression,
# including precompilation (or if it's forced)
if settings.COMPRESS_ENABLED or forced:
content = self.combined
elif settings.COMPRESS_PRECOMPILERS:
# or concatting it, if pre-compilation is enabled
content = self.concat
else:
# or just doing nothing, when neither
# compression nor compilation is enabled
return self.content
# Shortcurcuit in case the content is empty.
if not content:
return ''
# Then check for the appropriate output method and call it
output_func = getattr(self, "output_%s" % mode, None)
if callable(output_func):
return output_func(mode, content, forced)
# Total failure, raise a general exception
raise CompressorError("Couldn't find output method for mode '%s'" %
mode)
def handle_output(self, mode, content, forced, basename=None):
# Then check for the appropriate output method and call it
output_func = getattr(self, "output_%s" % mode, None)
if callable(output_func):
return output_func(mode, content, forced, basename)
# Total failure, raise a general exception
raise CompressorError("Couldn't find output method for mode '%s'" % mode)
def precompile(self, content, kind=None, elem=None, filename=None, **kwargs):
if not kind:
return False, content
attrs = self.parser.elem_attribs(elem)
mimetype = attrs.get("type", None)
if mimetype:
filter_or_command = self.all_mimetypes.get(mimetype)
if filter_or_command is None:
if mimetype not in ("text/css", "text/javascript"):
raise CompressorError("Couldn't find any precompiler in "
"COMPRESS_PRECOMPILERS setting for "
"mimetype '%s'." % mimetype)
else:
mod_name, cls_name = get_mod_func(filter_or_command)
try:
mod = import_module(mod_name)
except ImportError:
return True, CompilerFilter(content, filter_type=self.type,
command=filter_or_command, filename=filename).input(
**kwargs)
try:
precompiler_class = getattr(mod, cls_name)
except AttributeError:
raise FilterDoesNotExist('Could not find "%s".' %
filter_or_command)
else:
return True, precompiler_class(content, attrs,
filter_type=self.type, filename=filename).input(
**kwargs)
return False, content
def precompile(
self, content, kind=None, elem=None, filename=None, charset=None, **kwargs
):
"""
Processes file using a pre compiler.
This is the place where files like coffee script are processed.
"""
if not kind:
return False, content
attrs = self.parser.elem_attribs(elem)
mimetype = attrs.get("type", None)
if mimetype is None:
return False, content
filter_or_command = self.precompiler_mimetypes.get(mimetype)
if filter_or_command is None:
if mimetype in ("text/css", "text/javascript"):
return False, content
raise CompressorError(
"Couldn't find any precompiler in "
"COMPRESS_PRECOMPILERS setting for "
"mimetype '%s'." % mimetype
)
mod_name, cls_name = get_mod_func(filter_or_command)
try:
mod = import_module(mod_name)
except (ImportError, TypeError):
filter = CachedCompilerFilter(
content=content,
filter_type=self.type,
filename=filename,
charset=charset,
command=filter_or_command,
mimetype=mimetype,
)
return True, filter.input(**kwargs)
try:
precompiler_class = getattr(mod, cls_name)
except AttributeError:
raise FilterDoesNotExist('Could not find "%s".' % filter_or_command)
filter = precompiler_class(
content,
attrs=attrs,
filter_type=self.type,
charset=charset,
filename=filename,
)
return True, filter.input(**kwargs)
def precompile(self, content, kind=None, elem=None, filename=None, **kwargs):
if not kind:
return False, content
attrs = self.parser.elem_attribs(elem)
mimetype = attrs.get("type", None)
if mimetype:
command = self.all_mimetypes.get(mimetype)
if command is None:
if mimetype not in ("text/css", "text/javascript"):
raise CompressorError("Couldn't find any precompiler in "
"COMPRESS_PRECOMPILERS setting for "
"mimetype '%s'." % mimetype)
else:
return True, CompilerFilter(content, filter_type=self.type,
command=command, filename=filename).input(**kwargs)
return False, content
