| 1 | #!/usr/bin/env python
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| 2 |
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| 3 | """
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| 4 | Synopsis: %(prog)s [-h|-g|-b|-r|-a] dbfile [ picklefile ]
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| 5 |
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| 6 | Convert the database file given on the command line to a pickle
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| 7 | representation. The optional flags indicate the type of the database:
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| 8 |
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| 9 | -a - open using anydbm
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| 10 | -b - open as bsddb btree file
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| 11 | -d - open as dbm file
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| 12 | -g - open as gdbm file
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| 13 | -h - open as bsddb hash file
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| 14 | -r - open as bsddb recno file
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| 15 |
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| 16 | The default is hash. If a pickle file is named it is opened for write
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| 17 | access (deleting any existing data). If no pickle file is named, the pickle
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| 18 | output is written to standard output.
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| 19 |
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| 20 | """
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| 21 |
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| 22 | import getopt
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| 23 | try:
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| 24 | import bsddb
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| 25 | except ImportError:
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| 26 | bsddb = None
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| 27 | try:
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| 28 | import dbm
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| 29 | except ImportError:
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| 30 | dbm = None
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| 31 | try:
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| 32 | import gdbm
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| 33 | except ImportError:
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| 34 | gdbm = None
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| 35 | try:
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| 36 | import anydbm
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| 37 | except ImportError:
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| 38 | anydbm = None
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| 39 | import sys
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| 40 | try:
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| 41 | import cPickle as pickle
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| 42 | except ImportError:
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| 43 | import pickle
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| 44 |
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| 45 | prog = sys.argv[0]
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| 46 |
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| 47 | def usage():
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| 48 | sys.stderr.write(__doc__ % globals())
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| 49 |
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| 50 | def main(args):
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| 51 | try:
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| 52 | opts, args = getopt.getopt(args, "hbrdag",
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| 53 | ["hash", "btree", "recno", "dbm",
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| 54 | "gdbm", "anydbm"])
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| 55 | except getopt.error:
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| 56 | usage()
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| 57 | return 1
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| 58 |
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| 59 | if len(args) == 0 or len(args) > 2:
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| 60 | usage()
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| 61 | return 1
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| 62 | elif len(args) == 1:
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| 63 | dbfile = args[0]
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| 64 | pfile = sys.stdout
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| 65 | else:
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| 66 | dbfile = args[0]
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| 67 | try:
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| 68 | pfile = open(args[1], 'wb')
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| 69 | except IOError:
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| 70 | sys.stderr.write("Unable to open %s\n" % args[1])
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| 71 | return 1
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| 72 |
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| 73 | dbopen = None
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| 74 | for opt, arg in opts:
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| 75 | if opt in ("-h", "--hash"):
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| 76 | try:
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| 77 | dbopen = bsddb.hashopen
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| 78 | except AttributeError:
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| 79 | sys.stderr.write("bsddb module unavailable.\n")
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| 80 | return 1
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| 81 | elif opt in ("-b", "--btree"):
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| 82 | try:
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| 83 | dbopen = bsddb.btopen
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| 84 | except AttributeError:
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| 85 | sys.stderr.write("bsddb module unavailable.\n")
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| 86 | return 1
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| 87 | elif opt in ("-r", "--recno"):
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| 88 | try:
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| 89 | dbopen = bsddb.rnopen
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| 90 | except AttributeError:
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| 91 | sys.stderr.write("bsddb module unavailable.\n")
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| 92 | return 1
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| 93 | elif opt in ("-a", "--anydbm"):
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| 94 | try:
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| 95 | dbopen = anydbm.open
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| 96 | except AttributeError:
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| 97 | sys.stderr.write("anydbm module unavailable.\n")
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| 98 | return 1
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| 99 | elif opt in ("-g", "--gdbm"):
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| 100 | try:
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| 101 | dbopen = gdbm.open
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| 102 | except AttributeError:
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| 103 | sys.stderr.write("gdbm module unavailable.\n")
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| 104 | return 1
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| 105 | elif opt in ("-d", "--dbm"):
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| 106 | try:
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| 107 | dbopen = dbm.open
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| 108 | except AttributeError:
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| 109 | sys.stderr.write("dbm module unavailable.\n")
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| 110 | return 1
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| 111 | if dbopen is None:
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| 112 | if bsddb is None:
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| 113 | sys.stderr.write("bsddb module unavailable - ")
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| 114 | sys.stderr.write("must specify dbtype.\n")
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| 115 | return 1
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| 116 | else:
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| 117 | dbopen = bsddb.hashopen
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| 118 |
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| 119 | try:
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| 120 | db = dbopen(dbfile, 'r')
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| 121 | except bsddb.error:
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| 122 | sys.stderr.write("Unable to open %s. " % dbfile)
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| 123 | sys.stderr.write("Check for format or version mismatch.\n")
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| 124 | return 1
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| 125 |
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| 126 | for k in db.keys():
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| 127 | pickle.dump((k, db[k]), pfile, 1==1)
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| 128 |
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| 129 | db.close()
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| 130 | pfile.close()
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| 131 |
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| 132 | return 0
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| 133 |
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| 134 | if __name__ == "__main__":
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| 135 | sys.exit(main(sys.argv[1:]))
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