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| 1 | +#!/usr/bin/env python |
| 2 | + |
| 3 | +""" |
| 4 | +Synopsis: %(prog)s [-h|-b|-r|-a|-d] dbfile [ picklefile ] |
| 5 | +
|
| 6 | +Read the given picklefile as a series of key/value pairs and write to a new |
| 7 | +bsddb database. If the database already exists, any contents are deleted. |
| 8 | +The optional flags indicate the type of the database (bsddb hash, bsddb |
| 9 | +btree, bsddb recno, anydbm, dbm). The default is hash. If a pickle file is |
| 10 | +named it is opened for read access. If no pickle file is named, the pickle |
| 11 | +input is read from standard input. |
| 12 | +
|
| 13 | +Note that recno databases can only contain numeric keys, so you can't dump a |
| 14 | +hash or btree database using bsddb2pickle.py and reconstitute it to a recno |
| 15 | +database with %(prog)s. |
| 16 | +""" |
| 17 | + |
| 18 | +import getopt |
| 19 | +try: |
| 20 | + import bsddb |
| 21 | +except ImportError: |
| 22 | + bsddb = None |
| 23 | +try: |
| 24 | + import dbm |
| 25 | +except ImportError: |
| 26 | + dbm = None |
| 27 | +try: |
| 28 | + import anydbm |
| 29 | +except ImportError: |
| 30 | + anydbm = None |
| 31 | +import sys |
| 32 | +try: |
| 33 | + import cPickle as pickle |
| 34 | +except ImportError: |
| 35 | + import pickle |
| 36 | + |
| 37 | +prog = sys.argv[0] |
| 38 | + |
| 39 | +def usage(): |
| 40 | + print >> sys.stderr, __doc__ % globals() |
| 41 | + |
| 42 | +def main(args): |
| 43 | + try: |
| 44 | + opts, args = getopt.getopt(args, "hbrda", |
| 45 | + ["hash", "btree", "recno", "dbm", "anydbm"]) |
| 46 | + except getopt.error: |
| 47 | + usage() |
| 48 | + return 1 |
| 49 | + |
| 50 | + if len(args) == 0 or len(args) > 2: |
| 51 | + usage() |
| 52 | + return 1 |
| 53 | + elif len(args) == 1: |
| 54 | + dbfile = args[0] |
| 55 | + pfile = sys.stdin |
| 56 | + else: |
| 57 | + dbfile = args[0] |
| 58 | + try: |
| 59 | + pfile = file(args[1], 'rb') |
| 60 | + except IOError: |
| 61 | + print >> sys.stderr, "Unable to open", args[1] |
| 62 | + return 1 |
| 63 | + |
| 64 | + dbopen = None |
| 65 | + for opt, arg in opts: |
| 66 | + if opt in ("-h", "--hash"): |
| 67 | + try: |
| 68 | + dbopen = bsddb.hashopen |
| 69 | + except AttributeError: |
| 70 | + print >> sys.stderr, "bsddb module unavailable." |
| 71 | + return 1 |
| 72 | + elif opt in ("-b", "--btree"): |
| 73 | + try: |
| 74 | + dbopen = bsddb.btopen |
| 75 | + except AttributeError: |
| 76 | + print >> sys.stderr, "bsddb module unavailable." |
| 77 | + return 1 |
| 78 | + elif opt in ("-r", "--recno"): |
| 79 | + try: |
| 80 | + dbopen = bsddb.rnopen |
| 81 | + except AttributeError: |
| 82 | + print >> sys.stderr, "bsddb module unavailable." |
| 83 | + return 1 |
| 84 | + elif opt in ("-a", "--anydbm"): |
| 85 | + try: |
| 86 | + dbopen = anydbm.open |
| 87 | + except AttributeError: |
| 88 | + print >> sys.stderr, "anydbm module unavailable." |
| 89 | + return 1 |
| 90 | + elif opt in ("-d", "--dbm"): |
| 91 | + try: |
| 92 | + dbopen = dbm.open |
| 93 | + except AttributeError: |
| 94 | + print >> sys.stderr, "dbm module unavailable." |
| 95 | + return 1 |
| 96 | + if dbopen is None: |
| 97 | + if bsddb is None: |
| 98 | + print >> sys.stderr, "bsddb module unavailable -" |
| 99 | + print >> sys.stderr, "must specify dbtype." |
| 100 | + return 1 |
| 101 | + else: |
| 102 | + dbopen = bsddb.hashopen |
| 103 | + |
| 104 | + try: |
| 105 | + db = dbopen(dbfile, 'c') |
| 106 | + except bsddb.error: |
| 107 | + print >> sys.stderr, "Unable to open", dbfile, |
| 108 | + print >> sys.stderr, "Check for format or version mismatch." |
| 109 | + return 1 |
| 110 | + else: |
| 111 | + for k in db.keys(): |
| 112 | + del db[k] |
| 113 | + |
| 114 | + while 1: |
| 115 | + try: |
| 116 | + (key, val) = pickle.load(pfile) |
| 117 | + except EOFError: |
| 118 | + break |
| 119 | + db[key] = val |
| 120 | + |
| 121 | + db.close() |
| 122 | + pfile.close() |
| 123 | + |
| 124 | + return 0 |
| 125 | + |
| 126 | +if __name__ == "__main__": |
| 127 | + sys.exit(main(sys.argv[1:])) |
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