Upstream version, from Debian archive.

[python-cdb] / Example

#! /usr/bin/env python

# python-cdb 0.32 "Example"

import cdb

print cdb.__version__

## cdbmake object

fn = "f.cdb"

maker = cdb.cdbmake(fn, fn + ".tmp");

maker.add('flim', 'flam')        # +4,4:flim->flam
maker.add('map', 'hash')         # +3,4:map->hash
maker.add('spam', 'eggs')        # +4,4:spam->eggs
maker.add('map', 'dictionary')   # +3,10:map->dictionary
maker.add('map', 'assoc. array') # +3,12:map->assoc. array

print "Added %d records to CDB %s (fd %d)" % \
      (maker.numentries, maker.fn, maker.fd)

maker.finish()

del(maker)

## cdb object

c = cdb.init(fn)             # or init( file_obj.fileno() )

print len(c)                 # 5

print c['flim']              # 'flam'
print c.get('spam')          # 'eggs'
print c.get('map', 0)        # 'hash' -- a la cdbget utility
print c.get('map', 1)        # 'dictionary'

r = c.get('map')             # will print:
while r is not None:         #   'hash'
    print r                  #   'dictionary'
    r = c.getnext()          #   'assoc. array'

print c.keys()               # ['flim', 'map', 'spam']

for k in c.keys():           # flim => ['flam']
  print k, '=>', c.getall(k) # map => ['hash', 'dictionary', 'assoc. array']
                             # spam => ['eggs']

k = c.firstkey()             # same as above
while k is not None:
    print k, "=>", c.getall(k)
    k = c.nextkey()


def cdbdump(cdb_o):          # as the cdbdump utility
    r = cdb_o.each()         # r = ('key', 'val') or None
    while r:
        print "+%d,%d:%s->%s" % (
              len(r[0]), len(r[1]),
              r[0], r[1] )
        r = cdb_o.each()
    print


cdbdump(c)