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from __future__ import unicode_literals
import mimetypes
import posixpath
try:
from urllib.parse import quote
except ImportError:
from urllib import quote
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:
return None
module_bits = class_str.split('.')
module_path, class_name = '.'.join(module_bits[:-1]), module_bits[-1]
module = importlib.import_module(module_path)
return getattr(module, class_name, None)
def filepath_to_uri(path):
if path is None:
return path
return quote(smart_str(path).replace("\\", "/"), safe="/~!*()'#?")
def guess_type(path, default=None):
for type, ext in settings.PIPELINE_MIMETYPES:
mimetypes.add_type(type, ext)
mimetype, _ = mimetypes.guess_type(path)
if not mimetype:
return default
return smart_str(mimetype)
def relpath(path, start=posixpath.curdir):
"""Return a relative version of a path"""
if not path:
raise ValueError("no path specified")
start_list = posixpath.abspath(start).split(posixpath.sep)
path_list = posixpath.abspath(path).split(posixpath.sep)
# Work out how much of the filepath is shared by start and path.
i = len(posixpath.commonprefix([start_list, path_list]))
rel_list = [posixpath.pardir] * (len(start_list) - i) + path_list[i:]
if not rel_list:
return posixpath.curdir
return posixpath.join(*rel_list)
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