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 assocs
4 biassocs classes.struct combinators destructors gdbm.ffi io.backend
5 kernel libc literals locals math namespaces sequences serialize
11 { block-size integer }
12 { flags integer initial: $ GDBM_WRCREAT }
13 { mode integer initial: OCT: 644 } ;
16 gdbm-no-error gdbm-malloc-error
17 gdbm-block-size-error gdbm-file-open-error
18 gdbm-file-write-error gdbm-file-seek-error
19 gdbm-file-read-error gdbm-bad-magic-number
20 gdbm-empty-database gdbm-cant-be-reader
21 gdbm-cant-be-writer gdbm-reader-cant-delete
22 gdbm-reader-cant-store gdbm-reader-cant-reorganize
23 gdbm-unknown-update gdbm-item-not-found
24 gdbm-reorganize-failed gdbm-cannot-replace
25 gdbm-illegal-data gdbm-option-already-set
28 ERROR: gdbm-unknown-error error ;
33 : error-table ( -- table )
36 { 1 gdbm-malloc-error }
37 { 2 gdbm-block-size-error }
38 { 3 gdbm-file-open-error }
39 { 4 gdbm-file-write-error }
40 { 5 gdbm-file-seek-error }
41 { 6 gdbm-file-read-error }
42 { 7 gdbm-bad-magic-number }
43 { 8 gdbm-empty-database }
44 { 9 gdbm-cant-be-reader }
45 { 10 gdbm-cant-be-writer }
46 { 11 gdbm-reader-cant-delete }
47 { 12 gdbm-reader-cant-store }
48 { 13 gdbm-reader-cant-reorganize }
49 { 14 gdbm-unknown-update }
50 { 15 gdbm-item-not-found }
51 { 16 gdbm-reorganize-failed }
52 { 17 gdbm-cannot-replace }
53 { 18 gdbm-illegal-data }
54 { 19 gdbm-option-already-set }
55 { 20 gdbm-illegal-option }
58 : error>code ( error -- code )
59 dup error-table value-at [ ] [ gdbm-unknown-error ] ?if ;
61 : code>error ( code -- error ) error-table at ;
63 : gdbm-throw ( -- * ) gdbm_errno code>error throw ;
65 : check-error ( ret -- ) 0 = [ gdbm-throw ] unless ;
70 : dbf ( -- dbf ) current-dbf get ;
72 : gdbm-open ( gdbm -- dbf )
74 [ name>> normalize-path ]
75 [ block-size>> ] [ flags>> ] [ mode>> ]
76 } cleave f gdbm_open [ gdbm-throw ] unless* ;
78 DESTRUCTOR: gdbm-close
80 : object>datum ( obj -- datum )
81 object>bytes [ malloc-byte-array &free ] [ length ] bi
84 : datum>object* ( datum -- obj ? )
85 [ dptr>> ] [ dsize>> ] bi over
86 [ memory>byte-array bytes>object t ] [ drop f ] if ;
88 : gdbm-store ( key content flag -- )
90 { [ dbf ] [ object>datum ] [ object>datum ] [ ] } spread
91 gdbm_store check-error
97 : gdbm-error-message ( error -- msg ) error>code gdbm_strerror ;
99 : gdbm-replace ( key content -- ) GDBM_REPLACE gdbm-store ;
100 : gdbm-insert ( key content -- ) GDBM_INSERT gdbm-store ;
102 : gdbm-delete ( key -- )
103 [ dbf swap object>datum gdbm_delete check-error ]
106 : gdbm-fetch* ( key -- content ? )
107 [ dbf swap object>datum gdbm_fetch datum>object* ]
110 : gdbm-first-key* ( -- key ? )
111 [ dbf gdbm_firstkey datum>object* ] with-destructors ;
113 : gdbm-next-key* ( key -- key ? )
114 [ dbf swap object>datum gdbm_nextkey datum>object* ]
117 : gdbm-fetch ( key -- content/f ) gdbm-fetch* drop ;
118 : gdbm-first-key ( -- key/f ) gdbm-first-key* drop ;
119 : gdbm-next-key ( key -- key/f ) gdbm-next-key* drop ;
121 : gdbm-reorganize ( -- ) dbf gdbm_reorganize check-error ;
123 : gdbm-sync ( -- ) dbf gdbm_sync ;
125 : gdbm-exists ( key -- ? )
126 [ dbf swap object>datum gdbm_exists c-bool> ]
131 :: (gdbm-setopt) ( option value -- )
133 int heap-size dup malloc &free :> ( size ptr )
134 value ptr 0 int set-alien-value
135 dbf option ptr size gdbm_setopt check-error
140 : gdbm-setopt ( option value -- )
141 over GDBM_CACHESIZE = [ >c-bool ] unless (gdbm-setopt) ;
143 : gdbm-fdesc ( -- desc ) dbf gdbm_fdesc ;
145 : with-gdbm ( gdbm quot -- )
146 [ gdbm-open &gdbm-close current-dbf set ] prepose curry
147 [ with-scope ] curry with-destructors ; inline