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 locals math namespaces sequences serialize strings ;
10 { block-size integer }
11 { flags integer initial: $ GDBM_WRCREAT }
12 { mode integer initial: OCT: 644 } ;
17 : gdbm-throw ( -- * ) gdbm_errno throw ;
19 : check-error ( ret -- ) 0 = [ gdbm-throw ] unless ;
23 : dbf ( -- dbf ) current-dbf get ;
25 : gdbm-open ( gdbm -- dbf )
27 [ name>> normalize-path ]
28 [ block-size>> ] [ flags>> ] [ mode>> ]
29 } cleave f gdbm_open [ gdbm-throw ] unless* ;
31 DESTRUCTOR: gdbm-close
33 : object>datum ( obj -- datum )
34 object>bytes [ malloc-byte-array &free ] [ length ] bi
37 : datum>object* ( datum -- obj ? )
38 [ dptr>> ] [ dsize>> ] bi over
39 [ memory>byte-array bytes>object t ] [ drop f ] if ;
41 : gdbm-store ( key content flag -- )
43 { [ dbf ] [ object>datum ] [ object>datum ] [ ] } spread
44 gdbm_store check-error
47 :: (gdbm-setopt) ( option value -- )
49 int heap-size dup malloc &free :> ( size ptr )
50 value ptr 0 int set-alien-value
51 dbf option ptr size gdbm_setopt check-error
57 ALIAS: gdbm-error-message gdbm_strerror
59 : gdbm-replace ( key content -- ) GDBM_REPLACE gdbm-store ;
60 : gdbm-insert ( key content -- ) GDBM_INSERT gdbm-store ;
62 : gdbm-delete ( key -- )
63 [ dbf swap object>datum gdbm_delete check-error ]
66 : gdbm-fetch* ( key -- content ? )
67 [ dbf swap object>datum gdbm_fetch datum>object* ]
70 : gdbm-first-key* ( -- key ? )
71 [ dbf gdbm_firstkey datum>object* ] with-destructors ;
73 : gdbm-next-key* ( key -- key ? )
74 [ dbf swap object>datum gdbm_nextkey datum>object* ]
77 : gdbm-fetch ( key -- content/f ) gdbm-fetch* drop ;
78 : gdbm-first-key ( -- key/f ) gdbm-first-key* drop ;
79 : gdbm-next-key ( key -- key/f ) gdbm-next-key* drop ;
81 : gdbm-reorganize ( -- ) dbf gdbm_reorganize check-error ;
83 : gdbm-sync ( -- ) dbf gdbm_sync ;
85 : gdbm-exists ( key -- ? )
86 [ dbf swap object>datum gdbm_exists c-bool> ]
89 : gdbm-setopt ( option value -- )
90 over GDBM_CACHESIZE = [ >c-bool ] unless (gdbm-setopt) ;
92 : gdbm-fdesc ( -- desc ) dbf gdbm_fdesc ;
94 : with-gdbm ( gdbm quot -- )
95 [ gdbm-open &gdbm-close current-dbf set ] prepose curry
96 [ with-scope ] curry with-destructors ; inline