| Skip Montanaro | d968329 | 2003-02-03 15:09:03 +0000 | [diff] [blame^] | 1 | #!/usr/bin/env python |
| 2 | |
| 3 | """ |
| 4 | Synopsis: %(prog)s [-h|-b|-r] dbfile [ picklefile ] |
| 5 | |
| 6 | Convert the bsddb database file given on the command like to a pickle |
| 7 | representation. The optional flags indicate the type of the database (hash, |
| 8 | btree, recno). The default is hash. If a pickle file is named it is opened |
| 9 | for write access (deleting any existing data). If no pickle file is named, |
| 10 | the pickle output is written to standard output. |
| 11 | |
| 12 | """ |
| 13 | |
| 14 | import getopt |
| 15 | try: |
| 16 | import bsddb |
| 17 | except ImportError: |
| 18 | bsddb = None |
| 19 | try: |
| 20 | import dbm |
| 21 | except ImportError: |
| 22 | dbm = None |
| 23 | try: |
| 24 | import anydbm |
| 25 | except ImportError: |
| 26 | anydbm = None |
| 27 | import sys |
| 28 | try: |
| 29 | import cPickle as pickle |
| 30 | except ImportError: |
| 31 | import pickle |
| 32 | |
| 33 | prog = sys.argv[0] |
| 34 | |
| 35 | def usage(): |
| 36 | print >> sys.stderr, __doc__ % globals() |
| 37 | |
| 38 | def main(args): |
| 39 | try: |
| 40 | opts, args = getopt.getopt(args, "hbrda", |
| 41 | ["hash", "btree", "recno", "dbm", "anydbm"]) |
| 42 | except getopt.error: |
| 43 | usage() |
| 44 | return 1 |
| 45 | |
| 46 | if len(args) == 0 or len(args) > 2: |
| 47 | usage() |
| 48 | return 1 |
| 49 | elif len(args) == 1: |
| 50 | dbfile = args[0] |
| 51 | pfile = sys.stdout |
| 52 | else: |
| 53 | dbfile = args[0] |
| 54 | try: |
| 55 | pfile = file(args[1], 'wb') |
| 56 | except IOError: |
| 57 | print >> sys.stderr, "Unable to open", args[1] |
| 58 | return 1 |
| 59 | |
| 60 | dbopen = None |
| 61 | for opt, arg in opts: |
| 62 | if opt in ("-h", "--hash"): |
| 63 | try: |
| 64 | dbopen = bsddb.hashopen |
| 65 | except AttributeError: |
| 66 | print >> sys.stderr, "bsddb module unavailable." |
| 67 | return 1 |
| 68 | elif opt in ("-b", "--btree"): |
| 69 | try: |
| 70 | dbopen = bsddb.btopen |
| 71 | except AttributeError: |
| 72 | print >> sys.stderr, "bsddb module unavailable." |
| 73 | return 1 |
| 74 | elif opt in ("-r", "--recno"): |
| 75 | try: |
| 76 | dbopen = bsddb.rnopen |
| 77 | except AttributeError: |
| 78 | print >> sys.stderr, "bsddb module unavailable." |
| 79 | return 1 |
| 80 | elif opt in ("-a", "--anydbm"): |
| 81 | try: |
| 82 | dbopen = anydbm.open |
| 83 | except AttributeError: |
| 84 | print >> sys.stderr, "anydbm module unavailable." |
| 85 | return 1 |
| 86 | elif opt in ("-d", "--dbm"): |
| 87 | try: |
| 88 | dbopen = dbm.open |
| 89 | except AttributeError: |
| 90 | print >> sys.stderr, "dbm module unavailable." |
| 91 | return 1 |
| 92 | if dbopen is None: |
| 93 | if bsddb is None: |
| 94 | print >> sys.stderr, "bsddb module unavailable -" |
| 95 | print >> sys.stderr, "must specify dbtype." |
| 96 | return 1 |
| 97 | else: |
| 98 | dbopen = bsddb.hashopen |
| 99 | |
| 100 | try: |
| 101 | db = dbopen(dbfile, 'r') |
| 102 | except bsddb.error: |
| 103 | print >> sys.stderr, "Unable to open", dbfile, |
| 104 | print >> sys.stderr, "Check for format or version mismatch." |
| 105 | return 1 |
| 106 | |
| 107 | for k in db.keys(): |
| 108 | pickle.dump((k, db[k]), pfile, 1==1) |
| 109 | |
| 110 | db.close() |
| 111 | pfile.close() |
| 112 | |
| 113 | return 0 |
| 114 | |
| 115 | if __name__ == "__main__": |
| 116 | sys.exit(main(sys.argv[1:])) |