adb-backup.py

#!/usr/bin/env python

import optparse
import subprocess
import sys
import tempfile
import zlib


def doit(opts, pkg):
    """Do the work."""

    cmd = ['adb', 'backup']
    if opts.apk:
        cmd.append('-apk')
    else:
        cmd.append('-noapk')
    cmd.append(pkg)

    if opts.verbose:
        print('executing %s...' % ' '.join(cmd))

    ret = subprocess.call(cmd, shell=False)
    if opts.verbose:
        if ret == 0:
            print('returncode: okay!')
        else:
            print('returncode: %s' % ret)

    if opts.verbose:
        print('reading backup file...')
    lines = file('backup.ab').readlines()

    # skip the first four lines
    lines = lines[4:]

    if opts.verbose:
        print('decompressing data...')
    data = zlib.decompress(''.join(lines))

    if opts.verbose:
        print('writing to %s...' % opts.backuptar)
    fout = file(opts.backuptar, 'w')
    fout.write(data)
    fout.close()


def main():
    """Main branching logic."""

    parser = optparse.OptionParser(usage='%prog [-h] [-v] -f backupfile.tar [-a] com.example.app')
    parser.add_option('-f', '--file', dest='backuptar',
                      metavar='backupfile.tar',
                      help='tar file to create with the adb backup (required).')
    parser.add_option('-a', '--apk', dest='apk',
                      default=False, action='store_true',
                      help='include apk in backup (default: no)')
    parser.add_option('-v', '--verbose', dest='verbose',
                      default=False, action='store_true',
                      help='be noisy (default: no)')

    (opts, args) = parser.parse_args()

    if not len(args) == 1:
        parser.error('need a name of a package to backup')

    if not opts.backuptar:
        parser.error('need an output tar filename with -f')

    doit(opts, args[0])

if __name__ == '__main__':
    main()

# eof