+from datetime import date
from functools import wraps
+from os.path import join
+from os import listdir, stat
+from shutil import move, rmtree
+from django.conf import settings
+import re
+import filecmp
from django.db.models import Count
return wrapper
-class ChunksList(object):
- def __init__(self, chunk_qs):
- self.chunk_qs = chunk_qs.annotate(
- book_length=Count('book__chunk')).select_related(
- 'book', 'stage__name',
- 'user')
-
- self.book_qs = chunk_qs.values('book_id')
-
- def __getitem__(self, key):
- if isinstance(key, slice):
- return self.get_slice(key)
- elif isinstance(key, int):
- return self.get_slice(slice(key, key+1))[0]
- else:
- raise TypeError('Unsupported list index. Must be a slice or an int.')
-
- def __len__(self):
- return self.book_qs.count()
-
- def get_slice(self, slice_):
- book_ids = [x['book_id'] for x in self.book_qs[slice_]]
- chunk_qs = self.chunk_qs.filter(book__in=book_ids)
-
- chunks_list = []
- book = None
- for chunk in chunk_qs:
- if chunk.book != book:
- book = chunk.book
- chunks_list.append(ChoiceChunks(book, [chunk], chunk.book_length))
+def cached_in_field(field_name):
+ def decorator(f):
+ @property
+ @wraps(f)
+ def wrapped(self, *args, **kwargs):
+ value = getattr(self, field_name)
+ if value is None:
+ value = f(self, *args, **kwargs)
+ type(self)._default_manager.filter(pk=self.pk).update(**{field_name: value})
+ return value
+ return wrapped
+ return decorator
+
+
+def parse_isodate(isodate):
+ try:
+ return date(*[int(p) for p in isodate.split('-')])
+ except (AttributeError, TypeError, ValueError):
+ raise ValueError("Not a date in ISO format.")
+
+
+class GalleryMerger(object):
+ def __init__(self, dest_gallery, src_gallery):
+ self.dest = dest_gallery
+ self.src = src_gallery
+ self.dest_size = None
+ self.src_size = None
+ self.num_deleted = 0
+
+ @staticmethod
+ def path(gallery):
+ return join(settings.MEDIA_ROOT, settings.IMAGE_DIR, gallery)
+
+ @staticmethod
+ def get_prefix(name):
+ m = re.match(r"^([0-9])-", name)
+ if m:
+ return int(m.groups()[0])
+ return None
+
+ @staticmethod
+ def set_prefix(name, prefix, always=False):
+ m = not always and re.match(r"^([0-9])-", name)
+ return "%1d-%s" % (prefix, m and name[2:] or name)
+
+ @property
+ def was_merged(self):
+ "Check if we have gallery size recorded"
+ return self.dest_size is not None
+
+ def merge(self):
+ if not self.dest:
+ return self.src
+ if not self.src:
+ return self.dest
+
+ files = listdir(self.path(self.dest))
+ files.sort()
+ self.dest_size = len(files)
+ files_other = listdir(self.path(self.src))
+ files_other.sort()
+ self.src_size = len(files_other)
+
+ if files and files_other:
+ print "compare %s with %s" % (files[-1], files_other[0])
+ if filecmp.cmp(
+ join(self.path(self.dest), files[-1]),
+ join(self.path(self.src), files_other[0]),
+ False
+ ):
+ files_other.pop(0)
+ self.num_deleted = 1
+
+ prefixes = {}
+ renamed_files = {}
+ renamed_files_other = {}
+ last_pfx = -1
+
+ # check if all elements of my files have a prefix
+ files_prefixed = True
+ for f in files:
+ p = self.get_prefix(f)
+ if p:
+ if p > last_pfx: last_pfx = p
else:
- chunks_list[-1].chunks.append(chunk)
- return chunks_list
+ files_prefixed = False
+ break
+ # if not, add a 0 prefix to them
+ if not files_prefixed:
+ prefixes[0] = 0
+ for f in files:
+ renamed_files[f] = self.set_prefix(f, 0, True)
-class ChoiceChunks(object):
- """
- Associates the given chunks iterable for a book.
- """
+ # two cases here - either all are prefixed or not.
+ files_other_prefixed = True
+ for f in files_other:
+ pfx = self.get_prefix(f)
+ if pfx is not None:
+ if not pfx in prefixes:
+ last_pfx += 1
+ prefixes[pfx] = last_pfx
+ renamed_files_other[f] = self.set_prefix(f, prefixes[pfx])
+ else:
+ # ops, not all files here were prefixed.
+ files_other_prefixed = False
+ break
- chunks = None
+ # just set a 1- prefix to all of them
+ if not files_other_prefixed:
+ for f in files_other:
+ renamed_files_other[f] = self.set_prefix(f, 1, True)
- def __init__(self, book, chunks, book_length):
- self.book = book
- self.chunks = chunks
- self.book_length = book_length
+ # finally, move / rename files.
+ for frm, to in renamed_files.items():
+ move(join(self.path(self.dest), frm),
+ join(self.path(self.dest), to))
+ for frm, to in renamed_files_other.items():
+ move(join(self.path(self.src), frm),
+ join(self.path(self.dest), to))
+ rmtree(join(self.path(self.src)))
+ return self.dest
fnp / redakcja.git / blobdiff