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import fnmatch
import os
from django.core.management.base import BaseCommand, CommandError
from compressor.conf import settings
from compressor.cache import cache, get_mtime, get_mtime_cachekey
class Command(BaseCommand):
help = "Add or remove all mtime values from the cache"
def add_arguments(self, parser):
parser.add_argument(
'-i', '--ignore', action='append', default=[],
dest='ignore_patterns', metavar='PATTERN',
help="Ignore files or directories matching this glob-style "
"pattern. Use multiple times to ignore more."),
parser.add_argument(
'--no-default-ignore', action='store_false',
dest='use_default_ignore_patterns', default=True,
help="Don't ignore the common private glob-style patterns 'CVS', "
"'.*' and '*~'."),
parser.add_argument(
'--follow-links', dest='follow_links', action='store_true',
help="Follow symlinks when traversing the COMPRESS_ROOT "
"(which defaults to STATIC_ROOT). Be aware that using this "
"can lead to infinite recursion if a link points to a parent "
"directory of itself."),
parser.add_argument(
'-c', '--clean', dest='clean', action='store_true',
help="Remove all items"),
parser.add_argument(
'-a', '--add', dest='add', action='store_true',
help="Add all items"),
def is_ignored(self, path):
"""
Return True or False depending on whether the ``path`` should be
ignored (if it matches any pattern in ``ignore_patterns``).
"""
for pattern in self.ignore_patterns:
if fnmatch.fnmatchcase(path, pattern):
return True
return False
def handle(self, **options):
ignore_patterns = options['ignore_patterns']
if options['use_default_ignore_patterns']:
ignore_patterns += ['CVS', '.*', '*~']
options['ignore_patterns'] = ignore_patterns
self.ignore_patterns = ignore_patterns
if ((options['add'] and options['clean']) or
(not options['add'] and not options['clean'])):
raise CommandError('Please specify either "--add" or "--clean"')
if not settings.COMPRESS_MTIME_DELAY:
raise CommandError(
'mtime caching is currently disabled. Please '
'set the COMPRESS_MTIME_DELAY setting to a number of seconds.')
files_to_add = set()
keys_to_delete = set()
for root, dirs, files in os.walk(settings.COMPRESS_ROOT,
followlinks=options['follow_links']):
for dir_ in dirs:
if self.is_ignored(dir_):
dirs.remove(dir_)
for filename in files:
common = "".join(root.split(settings.COMPRESS_ROOT))
if common.startswith(os.sep):
common = common[len(os.sep):]
if self.is_ignored(os.path.join(common, filename)):
continue
filename = os.path.join(root, filename)
keys_to_delete.add(get_mtime_cachekey(filename))
if options['add']:
files_to_add.add(filename)
if keys_to_delete:
cache.delete_many(list(keys_to_delete))
self.stdout.write("Deleted mtimes of %d files from the cache."
% len(keys_to_delete))
if files_to_add:
for filename in files_to_add:
get_mtime(filename)
self.stdout.write("Added mtimes of %d files to cache."
% len(files_to_add))
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