docker_machine_relocate.py

from json import loads, dumps
from base64 import b64decode, b64encode

def relocate( conf_data, old_path, new_path ):

	def rdt( dct ):
		for k, v in dct.items():
			if isinstance( v, dict ):
				rdt( v )
			else:
				if 'Path' in k:
					dct[ k ] = v.replace( old_path, new_path )

	conf = loads( conf_data )
	raw_driver = loads( b64decode( conf[ 'RawDriver' ] ) )
	rdt( conf )
	rdt( raw_driver )
	conf[ 'RawDriver' ] = b64encode( dumps( raw_driver ) )
	return dumps( conf, sort_keys = True, indent = 4, separators = ( ',', ': ' ) )

if __name__ == '__main__':
	from sys import argv
	_, old_conf, new_conf, old_path, new_path = argv
	with open( old_conf, 'r' ) as inf:
		conf_data = inf.read()
	relocated = relocate( conf_data, old_path, new_path )
	with open( new_conf, 'w' ) as outf:
		outf.write( relocated )

FYI, in latest Machine versions we've removed the use of RawDriver, so editing the JSON directly should work. Let us know if you encounter any issues, thanks.