Git.Storage.Web/Theme/plugins/jquery-file-upload/server/gae-python/main.py

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# -*- coding: utf-8 -*-
#
# jQuery File Upload Plugin GAE Python Example 2.0
# https://github.com/blueimp/jQuery-File-Upload
#
# Copyright 2011, Sebastian Tschan
# https://blueimp.net
#
# Licensed under the MIT license:
# http://www.opensource.org/licenses/MIT
#

from __future__ import with_statement
from google.appengine.api import files, images
from google.appengine.ext import blobstore, deferred
from google.appengine.ext.webapp import blobstore_handlers
import json, re, urllib, webapp2

WEBSITE = 'http://blueimp.github.com/jQuery-File-Upload/'
MIN_FILE_SIZE = 1 # bytes
MAX_FILE_SIZE = 5000000 # bytes
IMAGE_TYPES = re.compile('image/(gif|p?jpeg|(x-)?png)')
ACCEPT_FILE_TYPES = IMAGE_TYPES
THUMBNAIL_MODIFICATOR = '=s80' # max width / height
EXPIRATION_TIME = 300 # seconds

def cleanup(blob_keys):
    blobstore.delete(blob_keys)

class UploadHandler(webapp2.RequestHandler):

    def initialize(self, request, response):
        super(UploadHandler, self).initialize(request, response)
        self.response.headers['Access-Control-Allow-Origin'] = '*'
        self.response.headers[
            'Access-Control-Allow-Methods'
        ] = 'OPTIONS, HEAD, GET, POST, PUT, DELETE'
    
    def validate(self, file):
        if file['size'] < MIN_FILE_SIZE:
            file['error'] = 'File is too small'
        elif file['size'] > MAX_FILE_SIZE:
            file['error'] = 'File is too big'
        elif not ACCEPT_FILE_TYPES.match(file['type']):
            file['error'] = 'Filetype not allowed'
        else:
            return True
        return False
    
    def get_file_size(self, file):
        file.seek(0, 2) # Seek to the end of the file
        size = file.tell() # Get the position of EOF
        file.seek(0) # Reset the file position to the beginning
        return size
    
    def write_blob(self, data, info):
        blob = files.blobstore.create(
            mime_type=info['type'],
            _blobinfo_uploaded_filename=info['name']
        )