maemo.org - Talk - Sync Picasaweb to Directory

Here is a python script that can run on the device and will syncronize a users images with the device. It pulls the server side resized images at your preferential size and will not re-download images already on the device.

It doesn't delete images or handle half-downloaded images, but for the most part it works, just rerun when you have new images to download.

Code:

#!/usr/bin/python2.5

import sys

import os

import urllib2



# Try importing python gdata bindings from the system and then libs subdirectory

try:

        import gdata.photos.service

        import gdata.media

        import gdata.geo

except:

        sys.path.append('libs')

        import gdata.photos.service

        import gdata.media

        import gdata.geo





gd_client = gdata.photos.service.PhotosService()



def sync ( username, prefix, limit = None, imgmax = None ):

        prefix = os.path.join(prefix, username)

        if not os.path.isdir(prefix):

                print "Creating directory %s" % (prefix)

                os.makedirs(prefix)

        

        album_list = gd_client.GetUserFeed(user = username, limit = limit)

        for album in reversed(album_list.entry):

                sync_album(album, prefix, imgmax)

        



def sync_album ( album, prefix, imgmax ):

        album_dir = os.path.join(prefix,"%d" % (album.timestamp.datetime().year), "%d-%02d-%02d %s" % (album.timestamp.datetime().year, album.timestamp.datetime().month, album.timestamp.datetime().day, album.title.text) );

        if not os.path.isdir(album_dir):

                print "Creating directory %s" % (album_dir)

                os.makedirs(album_dir)



        current_dir = set(os.listdir(album_dir))

        new_files = []



        if not imgmax:

                photos = gd_client.GetFeed(album.GetPhotosUri())

        else:

                photos = gd_client.GetFeed("%s&imgmax=%s" % (album.GetPhotosUri(), imgmax ) )



        for photo in photos.entry:

                if not os.path.exists(os.path.join(album_dir, photo.title.text)):

                        print "Downloading: %s -> %s" % (photo.content.src, os.path.join(album_dir, photo.title.text) )

                        download(photo.content.src, os.path.join(album_dir, photo.title.text))

                new_files.append(photo.title.text)



        unlink = current_dir - set(new_files)

        for name in unlink:

                print "Deleting unused file %s" % (os.path.join(album_dir,name))

                os.remove(os.path.join(album_dir,name))



def download ( url, destination ):

        out = open(destination, 'w')

        out.write(urllib2.urlopen(url).read())



# users files to sync, where to load them on the device and the sclaing you want used.  See the gdata docs for possible resizing strings.

sync('ericewarnke', '/media/mmc1/Pictures/', imgmax = '800u')

Hopefully someone can make use of this script.