/usr/share/pyshared/carquinyol/metadatastore.py is in python-carquinyol-0.98 0.98.1-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 | import os
from carquinyol import layoutmanager
from carquinyol import metadatareader
MAX_SIZE = 256
_INTERNAL_KEYS = ['checksum']
class MetadataStore(object):
def store(self, uid, metadata):
metadata_path = layoutmanager.get_instance().get_metadata_path(uid)
if not os.path.exists(metadata_path):
os.makedirs(metadata_path)
else:
received_keys = metadata.keys()
for key in os.listdir(metadata_path):
if key not in _INTERNAL_KEYS and key not in received_keys:
os.remove(os.path.join(metadata_path, key))
metadata['uid'] = uid
for key, value in metadata.items():
self._set_property(uid, key, value, md_path=metadata_path)
def _set_property(self, uid, key, value, md_path=False):
if not md_path:
md_path = layoutmanager.get_instance().get_metadata_path(uid)
# Hack to support activities that still pass properties named as
# for example title:text.
if ':' in key:
key = key.split(':', 1)[0]
changed = True
fpath = os.path.join(md_path, key)
tpath = os.path.join(md_path, '.' + key)
# FIXME: this codepath handles raw image data
# str() is 8-bit clean right now, but
# this won't last. We will need more explicit
# handling of strings, int/floats vs raw data
if isinstance(value, unicode):
value = value.encode('utf-8')
elif not isinstance(value, basestring):
value = str(value)
# avoid pointless writes; replace atomically
if os.path.exists(fpath):
stored_val = open(fpath, 'r').read()
if stored_val == value:
changed = False
if changed:
f = open(tpath, 'w')
f.write(value)
f.close()
os.rename(tpath, fpath)
def retrieve(self, uid, properties=None):
metadata_path = layoutmanager.get_instance().get_metadata_path(uid)
return metadatareader.retrieve(metadata_path, properties)
def delete(self, uid):
metadata_path = layoutmanager.get_instance().get_metadata_path(uid)
for key in os.listdir(metadata_path):
os.remove(os.path.join(metadata_path, key))
os.rmdir(metadata_path)
def get_property(self, uid, key):
metadata_path = layoutmanager.get_instance().get_metadata_path(uid)
property_path = os.path.join(metadata_path, key)
if os.path.exists(property_path):
return open(property_path, 'r').read()
else:
return None
def set_property(self, uid, key, value):
self._set_property(uid, key, value)
|