Note: This is taken from the Chicken Wiki, where a more recent version could be available.
Tokyo Cabinet DBM bindings for Chicken.
The following flags and procedures are defined (currently only the hash database API is provided - B-trees and fixed-length databases may be provided later). For more information, consult the tokyocabinet(3) manual pages.
(tc-hdb-open FILE #!key FLAGS
TUNE-OPTS MUTEX? NUM-BUCKETS RECORD-ALIGNMENT NUM-FREE-BLOCKS CACHE-LIMIT MMAP-SIZE)
Returns a HDB object as a c-pointer. FLAGS specify the creation and locking behavior and can include any of the following:
<constant>TC_HDBOWRITER</constant> <constant>TC_HDBOREADER</constant> <constant>TC_HDBOCREAT</constant> <constant>TC_HDBOTRUNC</constant> <constant>TC_HDBONOLCK</constant> <constant>TC_HDBOLCKNB</constant>
By default files are opened for reading and writing and creating.
TUNE-OPTS, along with the other keywords specify options to the tchdbtune function. MUTEX? opens the file under mutex mode (as with tchdbsetmutex).
Closes and frees the database handle.
(tc-hdb-put! HDB KEY VALUE)
(tc-hdb-delete! DBF KEY)
(tc-hdb-get HDB KEY)
Returns a STRING
Returns a STRING
(tc-hdb-fold HDB KONS KNIL)
Returns the accumulated result. Specify ALIST-CONS for the KONS to get an alist representation of the database.
Procedures which accept or return strings, such as tc-hdb-get and tc-hdb-put, are subject to the maximum string length limit imposed by Chicken. On 32-bit platforms, this is 16 megabytes. On a 64-bit platform, it is 72 petabytes. If you try to store or retrieve objects exceeding this limit, an error will occur.
Copyright (c) 2008, Alex Shinn All rights reserved. Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met: Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer. Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution. Neither the name of the author nor the names of its contributors may be used to endorse or promote products derived from this software without specific prior written permission. THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.