def test_filesize(self):
for test, expect in (
(1, u'1.00 B'),
(1024, u'1.00 kB'),
(1448576, u'1.38 MB'),
):
result = size.filesize(test)
assert result == expect, '%r <> %r' % (result, expect)
def size(filename, format='decimal'):
'''
Retrieve the size of a file.
:param filename: name of the file
'''
if isinstance(filename, file):
filename = filename.name
return filesize(os.stat(filename)[stat.ST_SIZE], format)
def __init__(self, data):
if isinstance(data, str): # Backwards compatibility
self.filename = data.rsplit('/', 1)[1]
self.url = data
self.is_image = True
self.size = 0
else:
self.filename = data['filename']
self.url = data['url']
self.is_image = data['is_image']
self.size = filesize(data['size'])
self.width = data.get('width')
self.height = data.get('height')
def to_representation(self, instance):
ret = super().to_representation(instance)
if any([
ret['height'], ret['width'], ret['filename'].rsplit('.', 1)[-1]
in ['png', 'jpg', 'jpeg', 'gif', 'webm', 'webp', 'mp4'],
re.match(
r'data:(?:image/(?P<mimetype>\w+))?(?:;(?P<b64>base64))?,(?P<data>(?:[A-Za-z0-9+/]{4})'
r'``*(?:[A-Za-z0-9+/]{2}==|[A-Za-z0-9+/]{3}=)?)',
ret['url'])
]):
ret['is_image'] = True
ret['size'] = filesize(ret['size'])
return ret
def to_representation(self, instance):
ret = super().to_representation(instance)
ext = ret.get('filename').rsplit('.', 1)[-1].lower()
if ext in ['png', 'jpg', 'jpeg', 'webp']:
ret['type'] = 'image'
elif ext in 'gifv':
ret['type'] = 'gif'
elif ext in ['mp4', 'webm']:
ret['type'] = 'video'
if ret.get('height') is not None or ret.get('width') is not None:
ret['height'], ret['width'] = scale_image(ret['height'],
ret['width'], 300, 400)
ret['size'] = filesize(ret['size'] or 0)
return ret
def size(filename, format='decimal'):
'''
Retrieve the size of a file.
:param filename: name of the file
>>> size('/etc/mime.types') # doctest: +SKIP
23.70 kB
'''
if isinstance(filename, file):
filename = filename.name
return filesize(os.stat(filename)[stat.ST_SIZE], format)