Merge branch 'reflow'

[wolnelektury.git] / apps / catalogue / utils.py

diff --git a/apps/catalogue/utils.py b/apps/catalogue/utils.py
deleted file mode 100644 (file)
index 07458c9..0000000
--- a/apps/catalogue/utils.py
+++ /dev/null
@@ -1,135 +0,0 @@
-# -*- 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 __future__ import with_statement
-
-import random
-import time
-from base64 import urlsafe_b64encode
-
-from django.core.files.uploadedfile import UploadedFile
-from django.utils.hashcompat import sha_constructor
-from django.conf import settings
-from celery.task import task
-from os import mkdir, path, unlink
-from errno import EEXIST, ENOENT
-from fcntl import flock, LOCK_EX
-from zipfile import ZipFile
-
-from librarian import DocProvider
-
-
-# Use the system (hardware-based) random number generator if it exists.
-if hasattr(random, 'SystemRandom'):
-    randrange = random.SystemRandom().randrange
-else:
-    randrange = random.randrange
-MAX_SESSION_KEY = 18446744073709551616L     # 2 << 63
-
-
-def get_random_hash(seed):
-    sha_digest = sha_constructor('%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()
-
-
-def split_tags(tags):
-    result = {}
-    for tag in tags:
-        result.setdefault(tag.category, []).append(tag)
-    return result
-
-
-class ExistingFile(UploadedFile):
-
-    def __init__(self, path, *args, **kwargs):
-        self.path = path
-        return super(ExistingFile, self).__init__(*args, **kwargs)
-
-    def temporary_file_path(self):
-        return self.path
-
-    def close(self):
-        pass
-
-
-class BookImportDocProvider(DocProvider):
-    """Used for joined EPUB and PDF files."""
-
-    def __init__(self, book):
-        self.book = book
-
-    def by_slug(self, slug):
-        if slug == self.book.slug:
-            return self.book.xml_file
-        else:
-            return type(self.book).objects.get(slug=slug).xml_file
-
-
-class LockFile(object):
-    """
-    A file lock monitor class; createas an ${objname}.lock
-    file in directory dir, and locks it exclusively.
-    To be used in 'with' construct.
-    """
-    def __init__(self, dir, objname):
-        self.lockname = path.join(dir, objname + ".lock")
-
-    def __enter__(self):
-        self.lock = open(self.lockname, 'w')
-        flock(self.lock, LOCK_EX)
-
-    def __exit__(self, *err):
-        try:
-            unlink(self.lockname)
-        except OSError as oe:
-            if oe.errno != oe.EEXIST:
-                raise oe
-        self.lock.close()
-
-
-def create_zip(paths, zip_slug):
-    """
-    Creates a zip in MEDIA_ROOT/zip directory containing files from path.
-    Resulting archive filename is ${zip_slug}.zip
-    Returns it's path relative to MEDIA_ROOT (no initial slash)
-    """
-    # directory to store zip files
-    zip_path = path.join(settings.MEDIA_ROOT, 'zip')
-
-    try:
-        mkdir(zip_path)
-    except OSError as oe:
-        if oe.errno != EEXIST:
-            raise oe
-    zip_filename = zip_slug + ".zip"
-
-    with LockFile(zip_path, zip_slug):
-        if not path.exists(path.join(zip_path, zip_filename)):
-            zipf = ZipFile(path.join(zip_path, zip_filename), 'w')
-            try:
-                for p in paths:
-                    zipf.write(p, path.basename(p))
-            finally:
-                zipf.close()
-
-        return 'zip/' + zip_filename
-
-
-def remove_zip(zip_slug):
-    """
-    removes the ${zip_slug}.zip file from zip store.
-    """
-    zip_file = path.join(settings.MEDIA_ROOT, 'zip', zip_slug + '.zip')
-    try:
-        unlink(zip_file)
-    except OSError as oe:
-        if oe.errno != ENOENT:
-            raise oe
-
-
-@task
-def create_zip_task(*args):
-    return create_zip(*args)