X-Git-Url: https://git.mdrn.pl/wolnelektury.git/blobdiff_plain/357027375ff8867f42ca34bcbfb5a78b5b185fc3..fc0b706f8c7eb67531df0a2acd972412e47c7010:/src/catalogue/utils.py diff --git a/src/catalogue/utils.py b/src/catalogue/utils.py index bcc5a0b33..d17ead0e6 100644 --- a/src/catalogue/utils.py +++ b/src/catalogue/utils.py @@ -1,24 +1,24 @@ -# -*- coding: utf-8 -*- # This file is part of Wolnelektury, licensed under GNU Affero GPLv3 or later. # Copyright © Fundacja Nowoczesna Polska. See NOTICE for more information. # -from collections import defaultdict import hashlib +import os.path import random import re import time from base64 import urlsafe_b64encode - -from django.http import HttpResponse -from django.core.files.uploadedfile import UploadedFile -from django.core.files.storage import DefaultStorage -from django.utils.encoding import force_unicode -from django.conf import settings -from os import mkdir, path, unlink +from collections import defaultdict from errno import EEXIST, ENOENT from fcntl import flock, LOCK_EX +from os import mkdir, path, unlink from zipfile import ZipFile +from django.conf import settings +from django.core.files.storage import DefaultStorage +from django.core.files.uploadedfile import UploadedFile +from django.http import HttpResponse +from django.utils.encoding import force_text + from reporting.utils import read_chunks # Use the system (hardware-based) random number generator if it exists. @@ -26,14 +26,19 @@ if hasattr(random, 'SystemRandom'): randrange = random.SystemRandom().randrange else: randrange = random.randrange -MAX_SESSION_KEY = 18446744073709551616L # 2 << 63 +MAX_SESSION_KEY = 18446744073709551616 # 2 << 63 def get_random_hash(seed): - sha_digest = hashlib.sha1('%s%s%s%s' % - (randrange(0, MAX_SESSION_KEY), time.time(), unicode(seed).encode('utf-8', 'replace'), - settings.SECRET_KEY)).digest() - return urlsafe_b64encode(sha_digest).replace('=', '').replace('_', '-').lower() + sha_digest = hashlib.sha1(( + '%s%s%s%s' % ( + randrange(0, MAX_SESSION_KEY), + time.time(), + str(seed).encode('utf-8', 'replace'), + settings.SECRET_KEY + ) + ).encode('utf-8')).digest() + return urlsafe_b64encode(sha_digest).decode('latin1').replace('=', '').replace('_', '-').lower() def split_tags(*tag_lists): @@ -84,12 +89,12 @@ class LockFile(object): try: unlink(self.lockname) except OSError as oe: - if oe.errno != EEXIST: + if oe.errno != ENOENT: raise oe self.lock.close() -#@task +# @task def create_zip(paths, zip_slug): """ Creates a zip in MEDIA_ROOT/zip directory containing files from path. @@ -145,6 +150,7 @@ class AttachmentHttpResponse(HttpResponse): for chunk in read_chunks(f): self.write(chunk) + class MultiQuerySet(object): def __init__(self, *args, **kwargs): self.querysets = args @@ -163,7 +169,7 @@ class MultiQuerySet(object): (offset, stop, step) = item.indices(self.count()) except AttributeError: # it's not a slice - make it one - return self[item : item + 1][0] + return self[item:item + 1][0] items = [] total_len = stop - offset for qs in self.querysets: @@ -178,55 +184,6 @@ class MultiQuerySet(object): stop = total_len - len(items) continue -class SortedMultiQuerySet(MultiQuerySet): - def __init__(self, *args, **kwargs): - self.order_by = kwargs.pop('order_by', None) - self.sortfn = kwargs.pop('sortfn', None) - if self.order_by is not None: - self.sortfn = lambda a, b: cmp((getattr(a, f) for f in self.order_by), - (getattr(b, f) for f in self.order_by)) - super(SortedMultiQuerySet, self).__init__(*args, **kwargs) - - def __getitem__(self, item): - sort_heads = [0] * len(self.querysets) - try: - (offset, stop, step) = item.indices(self.count()) - except AttributeError: - # it's not a slice - make it one - return self[item : item + 1][0] - items = [] - total_len = stop - offset - skipped = 0 - i_s = range(len(sort_heads)) - - while len(items) < total_len: - candidate = None - candidate_i = None - for i in i_s: - def get_next(): - return self.querysets[i][sort_heads[i]] - try: - if candidate is None: - candidate = get_next() - candidate_i = i - else: - competitor = get_next() - if self.sortfn(candidate, competitor) > 0: - candidate = competitor - candidate_i = i - except IndexError: - continue # continue next sort_head - # we have no more elements: - if candidate is None: - break - sort_heads[candidate_i] += 1 - if skipped < offset: - skipped += 1 - continue # continue next item - items.append(candidate) - - return items - def truncate_html_words(s, num, end_text='...'): """Truncates HTML to a certain number of words (not counting tags and @@ -238,10 +195,10 @@ def truncate_html_words(s, num, end_text='...'): This is just a version of django.utils.text.truncate_html_words with no space before the end_text. """ - s = force_unicode(s) + s = force_text(s) length = int(num) if length <= 0: - return u'' + return '' html4_singlets = ('br', 'col', 'link', 'base', 'img', 'param', 'area', 'hr', 'input') # Set up regular expressions re_words = re.compile(r'&.*?;|<.*?>|(\w[\w-]*)', re.U) @@ -279,7 +236,8 @@ def truncate_html_words(s, num, end_text='...'): except ValueError: pass else: - # SGML: An end tag closes, back to the matching start tag, all unclosed intervening start tags with omitted end tags + # SGML: An end tag closes, back to the matching start tag, + # all unclosed intervening start tags with omitted end tags open_tags = open_tags[i+1:] else: # Add it to the start of the open tags list @@ -333,26 +291,25 @@ class AppSettings(object): def __getattribute__(self, name): if name.startswith('_'): return object.__getattribute__(self, name) - value = getattr(settings, - "%s_%s" % (self._prefix, name), - object.__getattribute__(self, name)) + value = getattr(settings, "%s_%s" % (self._prefix, name), object.__getattribute__(self, name)) more = "_more_%s" % name if hasattr(self, more): value = getattr(self, more)(value) return value -def trim_query_log(trim_to=25): - """ -connection.queries includes all SQL statements -- INSERTs, UPDATES, SELECTs, etc. Each time your app hits the database, the query will be recorded. -This can sometimes occupy lots of memory, so trim it here a bit. - """ - if settings.DEBUG: - from django.db import connection - connection.queries = trim_to > 0 \ - and connection.queries[-trim_to:] \ - or [] - - def delete_from_cache_by_language(cache, key_template): cache.delete_many([key_template % lc for lc, ln in settings.LANGUAGES]) + + +def gallery_path(slug): + return os.path.join(settings.MEDIA_ROOT, settings.IMAGE_DIR, slug) + + +def gallery_url(slug): + return '%s%s%s/' % (settings.MEDIA_URL, settings.IMAGE_DIR, slug) + + +def get_mp3_length(path): + from mutagen.mp3 import MP3 + return int(MP3(path).info.length)