1 ! Copyright (C) 2010 Dmitry Shubin.
2 ! See http://factorcode.org/license.txt for BSD license.
3 USING: accessors alien.c-types alien.data alien.destructors
4 classes.struct combinators destructors gdbm.ffi io.backend kernel libc
5 literals math namespaces sequences serialize strings ;
10 { block-size integer }
11 { flags integer initial: $ GDBM_WRCREAT }
12 { mode integer initial: OCT: 644 } ;
14 ERROR: gdbm-error errno msg ;
19 : gdbm-throw ( -- * ) gdbm_errno dup gdbm_strerror gdbm-error ;
21 : check-error ( ret -- ) 0 = [ gdbm-throw ] unless ;
25 : dbf ( -- dbf ) current-dbf get ;
27 : gdbm-open ( gdbm -- dbf )
29 [ name>> normalize-path ]
30 [ block-size>> ] [ flags>> ] [ mode>> ]
31 } cleave f gdbm_open [ gdbm-throw ] unless* ;
33 DESTRUCTOR: gdbm-close
35 : object>datum ( obj -- datum )
36 object>bytes [ malloc-byte-array &free ] [ length ] bi
39 : datum>object* ( datum -- obj ? )
40 [ dptr>> ] [ dsize>> ] bi over
41 [ memory>byte-array bytes>object t ] [ drop f ] if ;
43 : gdbm-store ( key content flag -- )
45 { [ dbf ] [ object>datum ] [ object>datum ] [ ] } spread
46 gdbm_store check-error
52 : gdbm-replace ( key content -- ) GDBM_REPLACE gdbm-store ;
53 : gdbm-insert ( key content -- ) GDBM_INSERT gdbm-store ;
55 : gdbm-delete ( key -- )
56 [ dbf swap object>datum gdbm_delete check-error ]
59 : gdbm-fetch* ( key -- content ? )
60 [ dbf swap object>datum gdbm_fetch datum>object* ]
63 : gdbm-first-key* ( -- key ? )
64 [ dbf gdbm_firstkey datum>object* ] with-destructors ;
66 : gdbm-next-key* ( key -- key ? )
67 [ dbf swap object>datum gdbm_nextkey datum>object* ]
70 : gdbm-fetch ( key -- content/f ) gdbm-fetch* drop ;
71 : gdbm-first-key ( -- key/f ) gdbm-first-key* drop ;
72 : gdbm-next-key ( key -- key/f ) gdbm-next-key* drop ;
74 : gdbm-reorganize ( -- ) dbf gdbm_reorganize check-error ;
76 : gdbm-sync ( -- ) dbf gdbm_sync ;
78 : gdbm-exists ( key -- ? )
79 [ dbf swap object>datum gdbm_exists c-bool> ]
82 ! : gdbm-setopt ( option value size -- ret ) ;
84 : gdbm-fdesc ( -- desc ) dbf gdbm_fdesc ;
86 : with-gdbm ( gdbm quot -- )
87 [ gdbm-open &gdbm-close current-dbf set ] prepose curry
88 [ with-scope ] curry with-destructors ; inline