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 alien.enums alien.syntax classes.struct combinators continuations
5 destructors fry gdbm.ffi io.backend kernel libc locals math namespaces
6 sequences serialize strings ;
9 ENUM: gdbm-role reader writer wrcreat newdb ;
13 { block-size integer }
14 { role initial: wrcreat }
17 { mode integer initial: 0o644 } ;
19 : <gdbm> ( -- gdbm ) gdbm new ;
33 gdbm-reader-cant-delete
34 gdbm-reader-cant-store
35 gdbm-reader-cant-reorganize
38 gdbm-reorganize-failed
41 gdbm-option-already-set
47 [ gdbm_errno ] [ drop gdbm_errno_location int deref ] recover ;
49 : gdbm-throw ( -- * ) gdbm-errno gdbm-error number>enum throw ;
51 : check-error ( ret -- ) 0 = [ gdbm-throw ] unless ;
55 : dbf ( -- dbf ) current-dbf get ;
57 : get-flag ( gdbm -- n )
58 [ role>> enum>number ]
59 [ sync>> GDBM_SYNC 0 ? ]
60 [ nolock>> GDBM_NOLOCK 0 ? ]
63 : gdbm-open ( gdbm -- dbf )
65 [ name>> normalize-path ]
66 [ block-size>> ] [ get-flag ] [ mode>> ]
67 } cleave f gdbm_open [ gdbm-throw ] unless* ;
69 DESTRUCTOR: gdbm-close
71 : object>datum ( obj -- datum )
72 object>bytes [ malloc-byte-array &free ] [ length ] bi
75 : datum>object* ( datum -- obj ? )
76 [ dptr>> ] [ dsize>> ] bi over
77 [ memory>byte-array bytes>object t ] [ drop f ] if ;
79 : gdbm-store ( key content flag -- )
82 [ object>datum ] [ object>datum ] [ ] tri*
83 gdbm_store check-error
86 :: (gdbm-setopt) ( value option -- )
88 int heap-size dup malloc &free :> ( size ptr )
89 value ptr 0 int set-alien-value
90 dbf option ptr size gdbm_setopt check-error
93 : gdbm-setopt ( value option -- )
94 [ GDBM_CACHESIZE = [ >c-bool ] unless ] keep (gdbm-setopt) ;
99 : gdbm-info ( -- str ) gdbm_version ;
101 : gdbm-error-message ( error -- msg )
102 enum>number gdbm_strerror ;
104 : gdbm-replace ( key content -- ) GDBM_REPLACE gdbm-store ;
106 : gdbm-insert ( key content -- ) GDBM_INSERT gdbm-store ;
108 : gdbm-delete ( key -- )
109 [ dbf swap object>datum gdbm_delete check-error ]
112 : gdbm-fetch* ( key -- content ? )
113 [ dbf swap object>datum gdbm_fetch datum>object* ]
116 : gdbm-first-key* ( -- key ? )
117 [ dbf gdbm_firstkey datum>object* ] with-destructors ;
119 : gdbm-next-key* ( key -- next-key ? )
120 [ dbf swap object>datum gdbm_nextkey datum>object* ]
123 : gdbm-fetch ( key -- content/f ) gdbm-fetch* drop ;
124 : gdbm-first-key ( -- key/f ) gdbm-first-key* drop ;
125 : gdbm-next-key ( key -- key/f ) gdbm-next-key* drop ;
127 :: each-gdbm-key ( ... quot: ( ... key -- ... ) -- ... )
129 [ [ gdbm-next-key* ] [ quot keep ] do while ] when drop ; inline
131 : each-gdbm-value ( ... quot: ( ... value -- ... ) -- ... )
132 [ gdbm-fetch ] prepose each-gdbm-key ; inline
134 : each-gdbm-record ( ... quot: ( ... key value -- ... ) -- ... )
135 [ dup gdbm-fetch ] prepose each-gdbm-key ; inline
137 : gdbm-reorganize ( -- ) dbf gdbm_reorganize check-error ;
139 : gdbm-synchronize ( -- ) dbf gdbm_sync ;
141 : gdbm-exists? ( key -- ? )
142 [ dbf swap object>datum gdbm_exists c-bool> ]
145 : set-gdbm-cache-size ( size -- ) GDBM_CACHESIZE gdbm-setopt ;
146 : set-gdbm-sync-mode ( ? -- ) GDBM_SYNCMODE gdbm-setopt ;
147 : set-gdbm-block-pool ( ? -- ) GDBM_CENTFREE gdbm-setopt ;
148 : set-gdbm-block-merging ( ? -- ) GDBM_COALESCEBLKS gdbm-setopt ;
150 : gdbm-file-descriptor ( -- desc ) dbf gdbm_fdesc ;
152 : with-gdbm ( gdbm quot -- )
154 _ gdbm-open &gdbm-close current-dbf
156 ] with-destructors ; inline
158 :: with-gdbm-role ( name role quot -- )
159 <gdbm> name >>name role >>role quot with-gdbm ; inline
161 : with-gdbm-reader ( name quot -- )
162 reader swap with-gdbm-role ; inline
164 : with-gdbm-writer ( name quot -- )
165 writer swap with-gdbm-role ; inline