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import contextlib
import os
import tempfile
from .base import BaseStorage
class Storage(BaseStorage):
def __init__(self, app):
super().__init__(app)
os.makedirs(self.app.config['FILE_DIRECTORY'], exist_ok=True)
os.makedirs(self.app.config['THUMB_DIRECTORY'], exist_ok=True)
def _get_legacy_path(self, file_hash, filename):
return os.path.join(self.app.config['FILE_DIRECTORY'], file_hash + os.path.splitext(filename)[1])
def _get_path(self, file_hash):
return os.path.join(self.app.config['FILE_DIRECTORY'], file_hash)
def _find_path(self, f):
path = self._get_legacy_path(f.hash, f.filename)
if path and os.path.exists(path):
return path
path = self._get_path(f.hash)
if path and os.path.exists(path):
return path
return None
def get_thumb_path(self, f):
return os.path.join(self.app.config['THUMB_DIRECTORY'], f.hash + '.jpg')
def upload_file(self, uploaded_file, file_hash, user):
size = uploaded_file.content_length
if hasattr(uploaded_file.stream, 'file'):
temp = None
temp_path = uploaded_file.stream.name
else:
temp = tempfile.NamedTemporaryFile(prefix='upload_', dir=self.app.config['FILE_DIRECTORY'], delete=False)
uploaded_file.save(temp.file)
temp_path = temp.name
size = os.path.getsize(temp_path)
new_path = self._get_path(file_hash)
os.rename(temp_path, new_path)
if self.app.config.get('DESTINATION_MODE'):
os.chmod(new_path, self.app.config.get('DESTINATION_MODE'))
return new_path, size
def store_file(self, uploaded_file, file_hash, user, ip):
file_path, size = self.upload_file(uploaded_file, file_hash, user)
try:
return self.add_file(file_hash, uploaded_file.filename, size, user, ip)
except:
if os.path.exists(file_path):
os.unlink(file_path)
raise
def file_exists(self, f):
path = self._find_path(f)
return path and os.path.exists(path)
def get_file(self, f):
path = self._find_path(f)
if not path or not os.path.exists(path):
return
return path
def delete_file(self, f):
path = self._find_path(f)
if path and os.path.exists(path):
os.unlink(path)
thumb_path = self.get_thumb_path(f)
if thumb_path and os.path.exists(thumb_path):
os.unlink(thumb_path)
@contextlib.contextmanager
def temp_file(self, f):
path = self._find_path(f)
if not path or not os.path.exists(path):
raise FileNotFoundError(path)
with open(path, 'rb') as f:
yield f
def get_thumbnail(self, f):
path = self.get_thumb_path(f)
if not path or not os.path.exists(path):
return
return path
def store_thumbnail(self, f, stream):
path = self.get_thumb_path(f)
with open(path, 'wb') as f:
buf = stream.read(1024*10)
while buf:
f.write(buf)
buf = stream.read(1024*10)
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