def apply_exif(self, item_id, key_value_dict):
result = self.controllers[Database].db[Item.COLLECTION].find_one(
{'_id': item_id}
)
file_id = result[Item.FILE_ID]
file_obj = self.controllers[Database].fs.get(file_id)
temp_file_obj = tempfile.NamedTemporaryFile(delete=False)
shutil.copyfileobj(file_obj, temp_file_obj)
temp_file_obj.close()
metadata = pyexiv2.metadata.ImageMetadata(temp_file_obj.name)
metadata.read()
for k, v in key_value_dict.iteritems():
metadata[k] = v
metadata.write()
dest_file_obj = self.controllers[Database].fs.new_file()
dest_file_obj.filename = file_obj.filename
dest_file_obj.content_type = file_obj.content_type
shutil.copyfileobj(open(temp_file_obj.name, 'rb'), dest_file_obj)
dest_file_obj.close()
self.controllers[Database].db[Item.COLLECTION].update(
{'_id': item_id},
{'$set': {Item.FILE_ID: dest_file_obj._id}}
)
self.controllers[Database].fs.delete(file_id)
os.remove(temp_file_obj.name)
def test_write_dont_preserve_timestamps(self):
stat = os.stat(self.pathname)
atime = round(stat.st_atime)
mtime = round(stat.st_mtime)
metadata = ImageMetadata(self.pathname)
metadata.read()
metadata.comment = 'Yellow Submarine'
time.sleep(1.1)
metadata.write()
stat2 = os.stat(self.pathname)
atime2 = round(stat2.st_atime)
mtime2 = round(stat2.st_mtime)
# It is not safe to assume that atime will have been modified when the
# file has been read, as it may depend on mount options (e.g. noatime,
# relatime).
# See discussion at http://bugs.launchpad.net/pyexiv2/+bug/624999.
#self.failIfEqual(atime2, atime)
self.failIfEqual(mtime2, mtime)
metadata.comment = 'Yesterday'
time.sleep(1.1)
metadata.write(preserve_timestamps=True)
stat3 = os.stat(self.pathname)
atime3 = round(stat3.st_atime)
mtime3 = round(stat3.st_mtime)
self.failUnlessEqual(atime3, atime2)
self.failUnlessEqual(mtime3, mtime2)
def test_write_preserve_timestamps(self):
stat = os.stat(self.pathname)
atime = round(stat.st_atime)
mtime = round(stat.st_mtime)
metadata = ImageMetadata(self.pathname)
metadata.read()
metadata.comment = 'Yellow Submarine'
time.sleep(1.1)
metadata.write(preserve_timestamps=True)
stat2 = os.stat(self.pathname)
atime2 = round(stat2.st_atime)
mtime2 = round(stat2.st_mtime)
self.failUnlessEqual(atime2, atime)
self.failUnlessEqual(mtime2, mtime)
def get(self, str_id):
obj_id = bson.objectid.ObjectId(str_id)
result = self.controllers[Database].db[Item.COLLECTION].find_one(
{'_id': obj_id})
file_obj = self.controllers[Database].fs.get(result[Item.FILE_ID])
temp_file = tempfile.NamedTemporaryFile(delete=False)
shutil.copyfileobj(file_obj, temp_file)
temp_file.close()
metadata = pyexiv2.metadata.ImageMetadata(temp_file.name)
metadata.read()
details = []
for k in sorted(metadata.exif_keys + metadata.iptc_keys + metadata.xmp_keys):
try:
v = unicode(metadata[k].value)
except Exception, e:
v = unicode(e)
details.append([k, v])
