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#! /usr/bin/python2.7 """ Synopsis: %(prog)s [-h|-b|-g|-r|-a|-d] [ picklefile ] dbfile Read the given picklefile as a series of key/value pairs and write to a new database. If the database already exists, any contents are deleted. The optional flags indicate the type of the output database: -a - open using anydbm -b - open as bsddb btree file -d - open as dbm file -g - open as gdbm file -h - open as bsddb hash file -r - open as bsddb recno file The default is hash. If a pickle file is named it is opened for read access. If no pickle file is named, the pickle input is read from standard input. Note that recno databases can only contain integer keys, so you can't dump a hash or btree database using db2pickle.py and reconstitute it to a recno database with %(prog)s unless your keys are integers. """ import getopt try: import bsddb except ImportError: bsddb = None try: import dbm except ImportError: dbm = None try: import gdbm except ImportError: gdbm = None try: import anydbm except ImportError: anydbm = None import sys try: import cPickle as pickle except ImportError: import pickle prog = sys.argv[0] def usage(): sys.stderr.write(__doc__ % globals()) def main(args): try: opts, args = getopt.getopt(args, "hbrdag", ["hash", "btree", "recno", "dbm", "anydbm", "gdbm"]) except getopt.error: usage() return 1 if len(args) == 0 or len(args) > 2: usage() return 1 elif len(args) == 1: pfile = sys.stdin dbfile = args[0] else: try: pfile = open(args[0], 'rb') except IOError: sys.stderr.write("Unable to open %s\n" % args[0]) return 1 dbfile = args[1] dbopen = None for opt, arg in opts: if opt in ("-h", "--hash"): try: dbopen = bsddb.hashopen except AttributeError: sys.stderr.write("bsddb module unavailable.\n") return 1 elif opt in ("-b", "--btree"): try: dbopen = bsddb.btopen except AttributeError: sys.stderr.write("bsddb module unavailable.\n") return 1 elif opt in ("-r", "--recno"): try: dbopen = bsddb.rnopen except AttributeError: sys.stderr.write("bsddb module unavailable.\n") return 1 elif opt in ("-a", "--anydbm"): try: dbopen = anydbm.open except AttributeError: sys.stderr.write("anydbm module unavailable.\n") return 1 elif opt in ("-g", "--gdbm"): try: dbopen = gdbm.open except AttributeError: sys.stderr.write("gdbm module unavailable.\n") return 1 elif opt in ("-d", "--dbm"): try: dbopen = dbm.open except AttributeError: sys.stderr.write("dbm module unavailable.\n") return 1 if dbopen is None: if bsddb is None: sys.stderr.write("bsddb module unavailable - ") sys.stderr.write("must specify dbtype.\n") return 1 else: dbopen = bsddb.hashopen try: db = dbopen(dbfile, 'c') except bsddb.error: sys.stderr.write("Unable to open %s. " % dbfile) sys.stderr.write("Check for format or version mismatch.\n") return 1 else: for k in db.keys(): del db[k] while 1: try: (key, val) = pickle.load(pfile) except EOFError: break db[key] = val db.close() pfile.close() return 0 if __name__ == "__main__": sys.exit(main(sys.argv[1:]))