71 lines
2.1 KiB
Python
71 lines
2.1 KiB
Python
from __future__ import absolute_import
|
|
|
|
import base64
|
|
import os
|
|
import urllib
|
|
|
|
try:
|
|
from cStringIO import StringIO
|
|
except ImportError:
|
|
from StringIO import StringIO
|
|
|
|
from django.core.files import File
|
|
|
|
from converter.api import convert
|
|
from mimetype.api import get_mimetype
|
|
|
|
|
|
class PseudoFile(File):
|
|
def __init__(self, file, name):
|
|
self.name = name
|
|
self.file = file
|
|
self.file.seek(0, os.SEEK_END)
|
|
self.size = self.file.tell()
|
|
self.file.seek(0)
|
|
|
|
|
|
class Attachment(File):
|
|
def __init__(self, part, name):
|
|
self.name = name
|
|
self.file = PseudoFile(StringIO(part.get_payload(decode=True)), name=name)
|
|
|
|
|
|
class StagingFile(object):
|
|
"""
|
|
Simple class to extend the File class to add preview capabilities
|
|
files in a directory on a storage
|
|
"""
|
|
def __init__(self, staging_folder, filename=None, encoded_filename=None):
|
|
self.staging_folder = staging_folder
|
|
if encoded_filename:
|
|
self.encoded_filename = str(encoded_filename)
|
|
self.filename = base64.urlsafe_b64decode(urllib.unquote_plus(self.encoded_filename))
|
|
else:
|
|
self.filename = filename
|
|
self.encoded_filename = base64.urlsafe_b64encode(filename)
|
|
|
|
def __unicode__(self):
|
|
return unicode(self.filename)
|
|
|
|
def as_file(self):
|
|
return File(file=open(self.get_full_path(), mode='rb'), name=self.filename)
|
|
|
|
def get_full_path(self):
|
|
return os.path.join(self.staging_folder.folder_path, self.filename)
|
|
|
|
def get_image(self, size, page, zoom, rotation, as_base64=True):
|
|
# TODO: add support for transformations
|
|
converted_file_path = convert(self.get_full_path(), size=size)
|
|
|
|
if as_base64:
|
|
mimetype = get_mimetype(open(converted_file_path, 'r'), converted_file_path, mimetype_only=True)[0]
|
|
image = open(converted_file_path, 'r')
|
|
base64_data = base64.b64encode(image.read())
|
|
image.close()
|
|
return u'data:%s;base64,%s' % (mimetype, base64_data)
|
|
else:
|
|
return converted_file_path
|
|
|
|
def delete(self):
|
|
os.unlink(self.get_full_path())
|