|
0
|
1 /* Database access routines
|
|
|
2 Copyright (C) 1996, William M. Perry
|
|
|
3
|
|
|
4 This file is part of XEmacs.
|
|
|
5
|
|
|
6 XEmacs is free software; you can redistribute it and/or modify it
|
|
|
7 under the terms of the GNU General Public License as published by the
|
|
|
8 Free Software Foundation; either version 2, or (at your option) any
|
|
|
9 later version.
|
|
|
10
|
|
|
11 XEmacs is distributed in the hope that it will be useful, but WITHOUT
|
|
|
12 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
|
|
|
13 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
|
|
|
14 for more details.
|
|
|
15
|
|
|
16 You should have received a copy of the GNU General Public License
|
|
|
17 along with XEmacs; see the file COPYING. If not, write to
|
|
|
18 the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
|
|
|
19 Boston, MA 02111-1307, USA. */
|
|
|
20
|
|
|
21 /* Synched up with: Not in FSF. */
|
|
|
22
|
|
|
23 /* Written by Bill Perry */
|
|
185
|
24 /* Substantially rewritten by Martin Buchholz */
|
|
207
|
25 /* db 2.x support added by Andreas Jaeger */
|
|
0
|
26
|
|
|
27 #include <config.h>
|
|
|
28 #include "lisp.h"
|
|
|
29 #include <errno.h>
|
|
|
30
|
|
149
|
31 #ifndef HAVE_DATABASE
|
|
|
32 #error database.c being compiled, but HAVE_DATABASE not defined!
|
|
|
33 #endif /* HAVE_DATABASE */
|
|
|
34
|
|
157
|
35 #include "database.h" /* Our include file */
|
|
149
|
36
|
|
0
|
37 #ifdef HAVE_BERKELEY_DB
|
|
149
|
38 /* Work around Berkeley DB's use of int types which are defined
|
|
|
39 slightly differently in the not quite yet standard <inttypes.h>.
|
|
|
40 See db.h for details of why we're resorting to this... */
|
|
207
|
41 /* glibc 2.1 doesn't have this problem with DB 2.x */
|
|
|
42 #if !(defined __GLIBC__ && __GLIBC_MINOR__ >= 1)
|
|
149
|
43 #ifdef HAVE_INTTYPES_H
|
|
|
44 #define __BIT_TYPES_DEFINED__
|
|
|
45 #include <inttypes.h>
|
|
|
46 typedef uint8_t u_int8_t;
|
|
|
47 typedef uint16_t u_int16_t;
|
|
|
48 typedef uint32_t u_int32_t;
|
|
|
49 #ifdef WE_DONT_NEED_QUADS
|
|
|
50 typedef uint64_t u_int64_t;
|
|
|
51 #endif /* WE_DONT_NEED_QUADS */
|
|
|
52 #endif /* HAVE_INTTYPES_H */
|
|
207
|
53 #endif /* !(defined __GLIBC__ && __GLIBC_MINOR__ >= 1) */
|
|
149
|
54 #include DB_H_PATH /* Berkeley db's header file */
|
|
207
|
55 #ifndef DB_VERSION_MAJOR
|
|
|
56 # define DB_VERSION_MAJOR 1
|
|
|
57 #endif /* DB_VERSION_MAJOR */
|
|
0
|
58 Lisp_Object Qberkeley_db;
|
|
|
59 Lisp_Object Qhash;
|
|
|
60 Lisp_Object Qbtree;
|
|
|
61 Lisp_Object Qrecno;
|
|
149
|
62 #endif /* HAVE_BERKELEY_DB */
|
|
|
63
|
|
|
64 #ifdef HAVE_DBM
|
|
|
65 #include <ndbm.h>
|
|
|
66 Lisp_Object Qdbm;
|
|
|
67 #endif /* HAVE_DBM */
|
|
|
68
|
|
|
69 Lisp_Object Qdatabasep;
|
|
0
|
70
|
|
207
|
71 typedef enum { DB_DBM, DB_BERKELEY, DB_IS_UNKNOWN } XEMACS_DB_TYPE;
|
|
0
|
72
|
|
185
|
73 struct database;
|
|
|
74 typedef struct database database;
|
|
0
|
75
|
|
149
|
76 typedef struct
|
|
0
|
77 {
|
|
185
|
78 CONST char * (*get_subtype) (struct database *);
|
|
|
79 CONST char * (*get_type) (struct database *);
|
|
|
80 Lisp_Object (*get) (struct database *, Lisp_Object);
|
|
|
81 int (*put) (struct database *, Lisp_Object, Lisp_Object, Lisp_Object);
|
|
|
82 int (*rem) (struct database *, Lisp_Object);
|
|
|
83 void (*map) (struct database *, Lisp_Object);
|
|
|
84 Lisp_Object (*get_lisp_type) (struct database *);
|
|
|
85 void (*close) (struct database *);
|
|
|
86 Lisp_Object (*last_error) (struct database *);
|
|
0
|
87 } DB_FUNCS;
|
|
|
88
|
|
185
|
89 struct database
|
|
0
|
90 {
|
|
|
91 struct lcrecord_header header;
|
|
|
92 Lisp_Object fname;
|
|
|
93 XEMACS_DB_TYPE type;
|
|
|
94 int mode;
|
|
173
|
95 int access_;
|
|
94
|
96 int dberrno;
|
|
185
|
97 int live_p;
|
|
|
98 #ifdef HAVE_DBM
|
|
|
99 DBM *dbm_handle;
|
|
|
100 #endif
|
|
|
101 #ifdef HAVE_BERKELEY_DB
|
|
|
102 DB *db_handle;
|
|
|
103 #endif
|
|
0
|
104 DB_FUNCS *funcs;
|
|
149
|
105 #ifdef MULE
|
|
|
106 Lisp_Object coding_system;
|
|
|
107 #endif
|
|
0
|
108 };
|
|
|
109
|
|
185
|
110 #define XDATABASE(x) XRECORD (x, database, struct database)
|
|
0
|
111 #define XSETDATABASE(x, p) XSETRECORD (x, p, database)
|
|
|
112 #define DATABASEP(x) RECORDP (x, database)
|
|
|
113 #define GC_DATABASEP(x) GC_RECORDP (x, database)
|
|
|
114 #define CHECK_DATABASE(x) CHECK_RECORD (x, database)
|
|
185
|
115 #define DATABASE_LIVE_P(x) (x->live_p)
|
|
0
|
116 static Lisp_Object mark_database (Lisp_Object, void (*) (Lisp_Object));
|
|
|
117 static void print_database (Lisp_Object, Lisp_Object, int);
|
|
|
118 static void finalize_database (void *, int);
|
|
|
119 DEFINE_LRECORD_IMPLEMENTATION ("database", database,
|
|
|
120 mark_database, print_database,
|
|
|
121 finalize_database, 0, 0,
|
|
185
|
122 struct database);
|
|
0
|
123
|
|
185
|
124 #define CHECK_LIVE_DATABASE(db) do { \
|
|
|
125 CHECK_DATABASE(db); \
|
|
|
126 if (!DATABASE_LIVE_P (XDATABASE(db))) \
|
|
|
127 signal_simple_error ("Attempting to access closed database", db); \
|
|
|
128 } while (0)
|
|
|
129
|
|
|
130
|
|
|
131 static struct database *
|
|
0
|
132 new_database (void)
|
|
|
133 {
|
|
185
|
134 struct database *dbase =
|
|
|
135 alloc_lcrecord_type (struct database, lrecord_database);
|
|
0
|
136
|
|
|
137 dbase->fname = Qnil;
|
|
185
|
138 dbase->live_p = 0;
|
|
|
139 #ifdef HAVE_BERKELEY_DB
|
|
0
|
140 dbase->db_handle = NULL;
|
|
185
|
141 #endif
|
|
|
142 #ifdef HAVE_DBM
|
|
|
143 dbase->dbm_handle = NULL;
|
|
|
144 #endif
|
|
173
|
145 dbase->access_ = 0;
|
|
0
|
146 dbase->mode = 0;
|
|
94
|
147 dbase->dberrno = 0;
|
|
207
|
148 dbase->type = DB_IS_UNKNOWN;
|
|
149
|
149 #ifdef MULE
|
|
|
150 dbase->coding_system = Fget_coding_system (Qbinary);
|
|
|
151 #endif
|
|
173
|
152 return dbase;
|
|
0
|
153 }
|
|
|
154
|
|
|
155 static Lisp_Object
|
|
|
156 mark_database (Lisp_Object obj, void (*markobj) (Lisp_Object))
|
|
|
157 {
|
|
185
|
158 struct database *dbase = XDATABASE (obj);
|
|
0
|
159
|
|
|
160 ((markobj) (dbase->fname));
|
|
173
|
161 return Qnil;
|
|
0
|
162 }
|
|
|
163
|
|
|
164 static void
|
|
|
165 print_database (Lisp_Object obj, Lisp_Object printcharfun, int escapeflag)
|
|
|
166 {
|
|
185
|
167 struct database *dbase = XDATABASE (obj);
|
|
0
|
168 char buf[200];
|
|
|
169
|
|
|
170 if (print_readably)
|
|
|
171 {
|
|
|
172 error ("printing unreadable object #<database 0x%x>", dbase->header.uid);
|
|
|
173 }
|
|
|
174 else
|
|
|
175 {
|
|
185
|
176 sprintf (buf, "#<database \"%s\" (%s/%s/%s) 0x%x>",
|
|
|
177 XSTRING_DATA (dbase->fname),
|
|
|
178 dbase->funcs->get_type (dbase),
|
|
|
179 dbase->funcs->get_subtype (dbase),
|
|
|
180 (!DATABASE_LIVE_P (dbase) ? "closed" :
|
|
|
181 (dbase->access_ & O_WRONLY) ? "writeonly" :
|
|
|
182 (dbase->access_ & O_RDWR) ? "readwrite" : "readonly"),
|
|
0
|
183 dbase->header.uid);
|
|
|
184 write_c_string (buf, printcharfun);
|
|
|
185 }
|
|
|
186 }
|
|
|
187
|
|
|
188 static void
|
|
|
189 finalize_database (void *header, int for_disksave)
|
|
|
190 {
|
|
185
|
191 struct database *db = (struct database *) header;
|
|
0
|
192
|
|
|
193 if (for_disksave)
|
|
|
194 {
|
|
185
|
195 Lisp_Object obj;
|
|
|
196 XSETOBJ (obj, Lisp_Type_Record, (void *) db);
|
|
|
197
|
|
0
|
198 signal_simple_error
|
|
|
199 ("Can't dump an emacs containing window system objects", obj);
|
|
|
200 }
|
|
|
201 db->funcs->close (db);
|
|
|
202 }
|
|
|
203
|
|
203
|
204 DEFUN ("close-database", Fclose_database, 1, 1, 0, /*
|
|
0
|
205 Close database OBJ.
|
|
20
|
206 */
|
|
|
207 (obj))
|
|
0
|
208 {
|
|
185
|
209 CHECK_LIVE_DATABASE (obj);
|
|
|
210 XDATABASE (obj)->funcs->close (XDATABASE (obj));
|
|
|
211 XDATABASE (obj)->live_p = 0;
|
|
173
|
212 return Qnil;
|
|
0
|
213 }
|
|
|
214
|
|
20
|
215 DEFUN ("database-type", Fdatabase_type, 1, 1, 0, /*
|
|
0
|
216 Return the type of database OBJ.
|
|
20
|
217 */
|
|
|
218 (obj))
|
|
0
|
219 {
|
|
|
220 CHECK_DATABASE (obj);
|
|
|
221
|
|
185
|
222 return XDATABASE (obj)->funcs->get_lisp_type (XDATABASE (obj));
|
|
0
|
223 }
|
|
|
224
|
|
20
|
225 DEFUN ("database-subtype", Fdatabase_subtype, 1, 1, 0, /*
|
|
0
|
226 Return the subtype of database OBJ, if any.
|
|
20
|
227 */
|
|
|
228 (obj))
|
|
0
|
229 {
|
|
|
230 CHECK_DATABASE (obj);
|
|
185
|
231
|
|
|
232 return intern (XDATABASE (obj)->funcs->get_subtype (XDATABASE (obj)));
|
|
0
|
233 }
|
|
|
234
|
|
20
|
235 DEFUN ("database-live-p", Fdatabase_live_p, 1, 1, 0, /*
|
|
0
|
236 Return t iff OBJ is an active database, else nil.
|
|
20
|
237 */
|
|
|
238 (obj))
|
|
0
|
239 {
|
|
|
240 CHECK_DATABASE (obj);
|
|
|
241
|
|
185
|
242 return DATABASE_LIVE_P (XDATABASE (obj)) ? Qt : Qnil;
|
|
0
|
243 }
|
|
|
244
|
|
20
|
245 DEFUN ("database-file-name", Fdatabase_file_name, 1, 1, 0, /*
|
|
0
|
246 Return the filename associated with the database OBJ.
|
|
20
|
247 */
|
|
|
248 (obj))
|
|
0
|
249 {
|
|
|
250 CHECK_DATABASE (obj);
|
|
185
|
251
|
|
|
252 return XDATABASE (obj)->fname;
|
|
0
|
253 }
|
|
|
254
|
|
20
|
255 DEFUN ("databasep", Fdatabasep, 1, 1, 0, /*
|
|
0
|
256 Return t iff OBJ is a database, else nil.
|
|
20
|
257 */
|
|
|
258 (obj))
|
|
0
|
259 {
|
|
173
|
260 return DATABASEP (obj) ? Qt : Qnil;
|
|
0
|
261 }
|
|
|
262
|
|
|
263 #ifdef HAVE_DBM
|
|
|
264 static void
|
|
185
|
265 dbm_map (struct database *db, Lisp_Object func)
|
|
0
|
266 {
|
|
|
267 datum keydatum, valdatum;
|
|
|
268 Lisp_Object key, val;
|
|
|
269
|
|
185
|
270 for (keydatum = dbm_firstkey (db->dbm_handle);
|
|
0
|
271 keydatum.dptr != NULL;
|
|
185
|
272 keydatum = dbm_nextkey (db->dbm_handle))
|
|
0
|
273 {
|
|
185
|
274 valdatum = dbm_fetch (db->dbm_handle, keydatum);
|
|
0
|
275 key = make_string ((unsigned char *) keydatum.dptr, keydatum.dsize);
|
|
|
276 val = make_string ((unsigned char *) valdatum.dptr, valdatum.dsize);
|
|
|
277 call2 (func, key, val);
|
|
|
278 }
|
|
|
279 }
|
|
|
280
|
|
|
281 static Lisp_Object
|
|
185
|
282 dbm_get (struct database *db, Lisp_Object key)
|
|
0
|
283 {
|
|
|
284 datum keydatum, valdatum;
|
|
185
|
285
|
|
14
|
286 keydatum.dptr = (char *) XSTRING_DATA (key);
|
|
|
287 keydatum.dsize = XSTRING_LENGTH (key);
|
|
185
|
288 valdatum = dbm_fetch (db->dbm_handle, keydatum);
|
|
0
|
289
|
|
|
290 return (valdatum.dptr
|
|
|
291 ? make_string ((unsigned char *) valdatum.dptr, valdatum.dsize)
|
|
|
292 : Qnil);
|
|
|
293 }
|
|
|
294
|
|
|
295 static int
|
|
185
|
296 dbm_put (struct database *db,
|
|
|
297 Lisp_Object key, Lisp_Object val, Lisp_Object replace)
|
|
0
|
298 {
|
|
|
299 datum keydatum, valdatum;
|
|
185
|
300
|
|
14
|
301 valdatum.dptr = (char *) XSTRING_DATA (val);
|
|
|
302 valdatum.dsize = XSTRING_LENGTH (val);
|
|
|
303 keydatum.dptr = (char *) XSTRING_DATA (key);
|
|
|
304 keydatum.dsize = XSTRING_LENGTH (key);
|
|
0
|
305
|
|
185
|
306 return !dbm_store (db->dbm_handle, keydatum, valdatum,
|
|
|
307 NILP (replace) ? DBM_INSERT : DBM_REPLACE);
|
|
0
|
308 }
|
|
|
309
|
|
|
310 static int
|
|
185
|
311 dbm_remove (struct database *db, Lisp_Object key)
|
|
0
|
312 {
|
|
|
313 datum keydatum;
|
|
185
|
314
|
|
14
|
315 keydatum.dptr = (char *) XSTRING_DATA (key);
|
|
|
316 keydatum.dsize = XSTRING_LENGTH (key);
|
|
185
|
317
|
|
|
318 return dbm_delete (db->dbm_handle, keydatum);
|
|
0
|
319 }
|
|
|
320
|
|
|
321 static Lisp_Object
|
|
185
|
322 dbm_lisp_type (struct database *db)
|
|
0
|
323 {
|
|
173
|
324 return Qdbm;
|
|
0
|
325 }
|
|
|
326
|
|
|
327 static CONST char *
|
|
185
|
328 dbm_type (struct database *db)
|
|
0
|
329 {
|
|
173
|
330 return "dbm";
|
|
0
|
331 }
|
|
|
332
|
|
|
333 static CONST char *
|
|
185
|
334 dbm_subtype (struct database *db)
|
|
0
|
335 {
|
|
173
|
336 return "nil";
|
|
0
|
337 }
|
|
|
338
|
|
|
339 static Lisp_Object
|
|
185
|
340 dbm_lasterr (struct database *dbp)
|
|
0
|
341 {
|
|
151
|
342 return lisp_strerror (dbp->dberrno);
|
|
0
|
343 }
|
|
|
344
|
|
|
345 static void
|
|
185
|
346 dbm_closeit (struct database *db)
|
|
0
|
347 {
|
|
185
|
348 if (db->dbm_handle)
|
|
|
349 {
|
|
|
350 dbm_close (db->dbm_handle);
|
|
|
351 db->dbm_handle = NULL;
|
|
|
352 }
|
|
0
|
353 }
|
|
|
354
|
|
|
355 static DB_FUNCS ndbm_func_block =
|
|
|
356 {
|
|
|
357 dbm_subtype,
|
|
|
358 dbm_type,
|
|
|
359 dbm_get,
|
|
|
360 dbm_put,
|
|
|
361 dbm_remove,
|
|
|
362 dbm_map,
|
|
|
363 dbm_lisp_type,
|
|
|
364 dbm_closeit,
|
|
|
365 dbm_lasterr
|
|
|
366 };
|
|
185
|
367 #endif /* HAVE_DBM */
|
|
0
|
368
|
|
|
369 #ifdef HAVE_BERKELEY_DB
|
|
|
370 static Lisp_Object
|
|
185
|
371 berkdb_lisp_type (struct database *db)
|
|
0
|
372 {
|
|
173
|
373 return Qberkeley_db;
|
|
0
|
374 }
|
|
|
375
|
|
|
376 static CONST char *
|
|
185
|
377 berkdb_type (struct database *db)
|
|
0
|
378 {
|
|
173
|
379 return "berkeley";
|
|
0
|
380 }
|
|
|
381
|
|
|
382 static CONST char *
|
|
185
|
383 berkdb_subtype (struct database *db)
|
|
0
|
384 {
|
|
185
|
385 if (!db->db_handle)
|
|
173
|
386 return "nil";
|
|
0
|
387
|
|
185
|
388 switch (db->db_handle->type)
|
|
|
389 {
|
|
|
390 case DB_BTREE: return "btree";
|
|
|
391 case DB_HASH: return "hash";
|
|
|
392 case DB_RECNO: return "recno";
|
|
|
393 default: return "unknown";
|
|
|
394 }
|
|
0
|
395 }
|
|
|
396
|
|
|
397 static Lisp_Object
|
|
185
|
398 berkdb_lasterr (struct database *dbp)
|
|
0
|
399 {
|
|
151
|
400 return lisp_strerror (dbp->dberrno);
|
|
0
|
401 }
|
|
|
402
|
|
|
403 static Lisp_Object
|
|
185
|
404 berkdb_get (struct database *db, Lisp_Object key)
|
|
0
|
405 {
|
|
185
|
406 /* #### Needs mule-izing */
|
|
0
|
407 DBT keydatum, valdatum;
|
|
|
408 int status = 0;
|
|
|
409
|
|
207
|
410 #if DB_VERSION_MAJOR == 2
|
|
|
411 /* Always initialize keydatum, valdatum. */
|
|
|
412 memset(&keydatum, 0, sizeof(keydatum));
|
|
|
413 memset(&valdatum, 0, sizeof(valdatum));
|
|
|
414 #endif /* DV_VERSION_MAJOR = 2 */
|
|
|
415
|
|
14
|
416 keydatum.data = XSTRING_DATA (key);
|
|
|
417 keydatum.size = XSTRING_LENGTH (key);
|
|
185
|
418
|
|
207
|
419 #if DB_VERSION_MAJOR == 1
|
|
185
|
420 status = db->db_handle->get (db->db_handle, &keydatum, &valdatum, 0);
|
|
207
|
421 #else
|
|
|
422 status = db->db_handle->get (db->db_handle, NULL, &keydatum, &valdatum, 0);
|
|
|
423 #endif /* DB_VERSION_MAJOR */
|
|
0
|
424
|
|
|
425 if (!status)
|
|
185
|
426 return make_string ((Bufbyte *) valdatum.data, valdatum.size);
|
|
0
|
427
|
|
207
|
428 #if DB_VERSION_MAJOR == 1
|
|
94
|
429 db->dberrno = (status == 1) ? -1 : errno;
|
|
207
|
430 #else
|
|
|
431 db->dberrno = (status < 0) ? -1 : errno;
|
|
|
432 #endif /* DB_VERSION_MAJOR */
|
|
|
433
|
|
173
|
434 return Qnil;
|
|
0
|
435 }
|
|
|
436
|
|
|
437 static int
|
|
185
|
438 berkdb_put (struct database *db,
|
|
0
|
439 Lisp_Object key,
|
|
|
440 Lisp_Object val,
|
|
|
441 Lisp_Object replace)
|
|
|
442 {
|
|
|
443 DBT keydatum, valdatum;
|
|
|
444 int status = 0;
|
|
|
445
|
|
207
|
446 #if DB_VERSION_MAJOR == 2
|
|
|
447 /* Always initalize keydatum, valdatum. */
|
|
|
448 memset(&keydatum, 0, sizeof(keydatum));
|
|
|
449 memset(&valdatum, 0, sizeof(valdatum));
|
|
|
450 #endif /* DV_VERSION_MAJOR = 2 */
|
|
|
451
|
|
14
|
452 keydatum.data = XSTRING_DATA (key);
|
|
|
453 keydatum.size = XSTRING_LENGTH (key);
|
|
|
454 valdatum.data = XSTRING_DATA (val);
|
|
|
455 valdatum.size = XSTRING_LENGTH (val);
|
|
207
|
456 #if DB_VERSION_MAJOR == 1
|
|
185
|
457 status = db->db_handle->put (db->db_handle, &keydatum, &valdatum,
|
|
207
|
458 NILP (replace) ? R_NOOVERWRITE : 0);
|
|
94
|
459 db->dberrno = (status == 1) ? -1 : errno;
|
|
207
|
460 #else
|
|
|
461 status = db->db_handle->put (db->db_handle, NULL, &keydatum, &valdatum,
|
|
|
462 NILP (replace) ? DB_NOOVERWRITE : 0);
|
|
|
463 db->dberrno = (status < 0) ? -1 : errno;
|
|
|
464 #endif/* DV_VERSION_MAJOR = 2 */
|
|
|
465
|
|
0
|
466 return status;
|
|
|
467 }
|
|
|
468
|
|
|
469 static int
|
|
185
|
470 berkdb_remove (struct database *db, Lisp_Object key)
|
|
0
|
471 {
|
|
|
472 DBT keydatum;
|
|
|
473 int status;
|
|
|
474
|
|
207
|
475 #if DB_VERSION_MAJOR == 2
|
|
|
476 /* Always initialize keydatum. */
|
|
|
477 memset(&keydatum, 0, sizeof(keydatum));
|
|
|
478 #endif /* DV_VERSION_MAJOR = 2 */
|
|
|
479
|
|
14
|
480 keydatum.data = XSTRING_DATA (key);
|
|
|
481 keydatum.size = XSTRING_LENGTH (key);
|
|
185
|
482
|
|
207
|
483 #if DB_VERSION_MAJOR == 1
|
|
185
|
484 status = db->db_handle->del (db->db_handle, &keydatum, 0);
|
|
207
|
485 #else
|
|
|
486 status = db->db_handle->del (db->db_handle, NULL, &keydatum, 0);
|
|
|
487 #endif /* DB_VERSION_MAJOR */
|
|
|
488
|
|
0
|
489 if (!status)
|
|
|
490 return 0;
|
|
185
|
491
|
|
207
|
492 #if DB_VERSION_MAJOR == 1
|
|
94
|
493 db->dberrno = (status == 1) ? -1 : errno;
|
|
207
|
494 #else
|
|
|
495 db->dberrno = (status < 0) ? -1 : errno;
|
|
|
496 #endif /* DB_VERSION_MAJOR */
|
|
|
497
|
|
0
|
498 return 1;
|
|
|
499 }
|
|
|
500
|
|
|
501 static void
|
|
185
|
502 berkdb_map (struct database *db, Lisp_Object func)
|
|
0
|
503 {
|
|
|
504 DBT keydatum, valdatum;
|
|
|
505 Lisp_Object key, val;
|
|
185
|
506 DB *dbp = db->db_handle;
|
|
0
|
507 int status;
|
|
|
508
|
|
207
|
509 #if DB_VERSION_MAJOR == 1
|
|
0
|
510 for (status = dbp->seq (dbp, &keydatum, &valdatum, R_FIRST);
|
|
|
511 status == 0;
|
|
|
512 status = dbp->seq (dbp, &keydatum, &valdatum, R_NEXT))
|
|
|
513 {
|
|
185
|
514 /* ### Needs mule-izing */
|
|
|
515 key = make_string ((Bufbyte *) keydatum.data, keydatum.size);
|
|
|
516 val = make_string ((Bufbyte *) valdatum.data, valdatum.size);
|
|
0
|
517 call2 (func, key, val);
|
|
|
518 }
|
|
207
|
519 #else
|
|
|
520 DBC *dbcp;
|
|
|
521 /* Initialize the key/data pair so the flags aren't set. */
|
|
|
522 memset(&keydatum, 0, sizeof(keydatum));
|
|
|
523 memset(&valdatum, 0, sizeof(valdatum));
|
|
|
524
|
|
|
525 status = dbp->cursor (dbp, NULL, &dbcp);
|
|
|
526 for (status = dbcp->c_get (dbcp, &keydatum, &valdatum, DB_FIRST);
|
|
|
527 status == 0;
|
|
|
528 status = dbcp->c_get (dbcp, &keydatum, &valdatum, DB_NEXT))
|
|
|
529 {
|
|
|
530 /* ### Needs mule-izing */
|
|
|
531 key = make_string ((Bufbyte *) keydatum.data, keydatum.size);
|
|
|
532 val = make_string ((Bufbyte *) valdatum.data, valdatum.size);
|
|
|
533 call2 (func, key, val);
|
|
|
534 }
|
|
|
535 dbcp->c_close (dbcp);
|
|
|
536 #endif /* DB_VERSION_MAJOR */
|
|
0
|
537 }
|
|
|
538
|
|
|
539 static void
|
|
185
|
540 berkdb_close (struct database *db)
|
|
0
|
541 {
|
|
185
|
542 if (db->db_handle)
|
|
0
|
543 {
|
|
207
|
544 #if DB_VERSION_MAJOR == 1
|
|
185
|
545 db->db_handle->sync (db->db_handle, 0);
|
|
|
546 db->db_handle->close (db->db_handle);
|
|
207
|
547 #else
|
|
|
548 db->db_handle->sync (db->db_handle, 0);
|
|
|
549 db->db_handle->close (db->db_handle, 0);
|
|
|
550 #endif /* DB_VERSION_MAJOR */
|
|
185
|
551 db->db_handle = NULL;
|
|
0
|
552 }
|
|
|
553 }
|
|
|
554
|
|
|
555 static DB_FUNCS berk_func_block =
|
|
|
556 {
|
|
|
557 berkdb_subtype,
|
|
|
558 berkdb_type,
|
|
|
559 berkdb_get,
|
|
|
560 berkdb_put,
|
|
|
561 berkdb_remove,
|
|
|
562 berkdb_map,
|
|
|
563 berkdb_lisp_type,
|
|
|
564 berkdb_close,
|
|
|
565 berkdb_lasterr
|
|
|
566 };
|
|
185
|
567 #endif /* HAVE_BERKELEY_DB */
|
|
0
|
568
|
|
203
|
569 DEFUN ("database-last-error", Fdatabase_last_error, 0, 1, 0, /*
|
|
0
|
570 Return the last error associated with database OBJ.
|
|
20
|
571 */
|
|
|
572 (obj))
|
|
0
|
573 {
|
|
|
574 if (NILP (obj))
|
|
151
|
575 return lisp_strerror (errno);
|
|
185
|
576
|
|
0
|
577 CHECK_DATABASE (obj);
|
|
185
|
578
|
|
|
579 return XDATABASE (obj)->funcs->last_error (XDATABASE (obj));
|
|
0
|
580 }
|
|
|
581
|
|
203
|
582 DEFUN ("open-database", Fopen_database, 1, 5, 0, /*
|
|
0
|
583 Open database FILE, using database method TYPE and SUBTYPE, with
|
|
|
584 access rights ACCESS and permissions MODE. ACCESS can be any
|
|
|
585 combination of 'r' 'w' and '+', for read, write, and creation flags.
|
|
20
|
586 */
|
|
173
|
587 (file, type, subtype, access_, mode))
|
|
0
|
588 {
|
|
187
|
589 /* This function can GC */
|
|
0
|
590 Lisp_Object retval = Qnil;
|
|
|
591 int modemask;
|
|
|
592 int accessmask = 0;
|
|
185
|
593 struct database *dbase = NULL;
|
|
|
594 char *filename;
|
|
187
|
595 struct gcpro gcpro1, gcpro2;
|
|
0
|
596
|
|
70
|
597 CHECK_STRING (file);
|
|
187
|
598 GCPRO2 (file, access_);
|
|
|
599 file = Fexpand_file_name (file, Qnil);
|
|
|
600 UNGCPRO;
|
|
185
|
601 filename = (char *) XSTRING_DATA (file);
|
|
0
|
602
|
|
173
|
603 if (NILP (access_))
|
|
0
|
604 {
|
|
|
605 accessmask = O_RDWR | O_CREAT;
|
|
|
606 }
|
|
|
607 else
|
|
|
608 {
|
|
|
609 char *acc;
|
|
173
|
610 CHECK_STRING (access_);
|
|
|
611 acc = (char *) XSTRING_DATA (access_);
|
|
185
|
612
|
|
0
|
613 if (strchr (acc, '+'))
|
|
|
614 accessmask |= O_CREAT;
|
|
185
|
615
|
|
0
|
616 if (strchr (acc, 'r') && strchr (acc, 'w'))
|
|
|
617 accessmask |= O_RDWR;
|
|
|
618 else if (strchr (acc, 'w'))
|
|
|
619 accessmask |= O_WRONLY;
|
|
|
620 else
|
|
|
621 accessmask |= O_RDONLY;
|
|
|
622 }
|
|
|
623
|
|
|
624 if (NILP (mode))
|
|
|
625 {
|
|
185
|
626 modemask = 0755; /* rwxr-xr-x */
|
|
0
|
627 }
|
|
|
628 else
|
|
|
629 {
|
|
|
630 CHECK_INT (mode);
|
|
|
631 modemask = XINT (mode);
|
|
|
632 }
|
|
|
633
|
|
|
634 #ifdef HAVE_DBM
|
|
|
635 if (NILP (type) || EQ (type, Qdbm))
|
|
|
636 {
|
|
185
|
637 DBM *dbm = dbm_open (filename, accessmask, modemask);
|
|
|
638 if (!dbm)
|
|
|
639 return Qnil;
|
|
|
640
|
|
|
641 dbase = new_database ();
|
|
|
642 dbase->dbm_handle = dbm;
|
|
|
643 dbase->type = DB_DBM;
|
|
|
644 dbase->funcs = &ndbm_func_block;
|
|
0
|
645 goto db_done;
|
|
|
646 }
|
|
185
|
647 #endif /* HAVE_DBM */
|
|
0
|
648
|
|
|
649 #ifdef HAVE_BERKELEY_DB
|
|
|
650 if (NILP (type) || EQ (type, Qberkeley_db))
|
|
|
651 {
|
|
185
|
652 DBTYPE real_subtype;
|
|
|
653 DB *db;
|
|
207
|
654 int status;
|
|
|
655
|
|
185
|
656 if (EQ (subtype, Qhash) || NILP (subtype))
|
|
|
657 real_subtype = DB_HASH;
|
|
|
658 else if (EQ (subtype, Qbtree))
|
|
|
659 real_subtype = DB_BTREE;
|
|
|
660 else if (EQ (subtype, Qrecno))
|
|
|
661 real_subtype = DB_RECNO;
|
|
|
662 else
|
|
|
663 signal_simple_error ("Unsupported subtype", subtype);
|
|
|
664
|
|
207
|
665 #if DB_VERSION_MAJOR == 1
|
|
185
|
666 db = dbopen (filename, accessmask, modemask, real_subtype, NULL);
|
|
|
667 if (!db)
|
|
|
668 return Qnil;
|
|
207
|
669 #else
|
|
|
670 /* Berkeley DB Version 2 has only the accessmask DB_CREATE and DB_RDONLY,
|
|
|
671 other flags shouldn't be set */
|
|
|
672 if (NILP (access_))
|
|
|
673 {
|
|
|
674 accessmask = DB_CREATE;
|
|
|
675 }
|
|
|
676 else
|
|
|
677 {
|
|
|
678 char *acc;
|
|
|
679 CHECK_STRING (access_);
|
|
|
680 acc = (char *) XSTRING_DATA (access_);
|
|
|
681 accessmask = 0;
|
|
|
682
|
|
|
683 if (strchr (acc, '+'))
|
|
|
684 accessmask |= DB_CREATE;
|
|
185
|
685
|
|
207
|
686 if (strchr (acc, 'r') && !strchr (acc, 'w'))
|
|
|
687 accessmask |= DB_RDONLY;
|
|
|
688 }
|
|
|
689 status = db_open (filename, real_subtype, accessmask, modemask, NULL , NULL, &db);
|
|
|
690 if (status)
|
|
|
691 return Qnil;
|
|
|
692 #endif /* DB_VERSION_MAJOR */
|
|
|
693
|
|
185
|
694 dbase = new_database ();
|
|
|
695 dbase->db_handle = db;
|
|
|
696 dbase->type = DB_BERKELEY;
|
|
|
697 dbase->funcs = &berk_func_block;
|
|
0
|
698 goto db_done;
|
|
|
699 }
|
|
185
|
700 #endif /* HAVE_BERKELEY_DB */
|
|
|
701
|
|
0
|
702 signal_simple_error ("Unsupported database type", type);
|
|
173
|
703 return Qnil;
|
|
0
|
704
|
|
|
705 db_done:
|
|
185
|
706 dbase->live_p = 1;
|
|
0
|
707 dbase->fname = file;
|
|
|
708 dbase->mode = modemask;
|
|
173
|
709 dbase->access_ = accessmask;
|
|
0
|
710 XSETDATABASE (retval, dbase);
|
|
|
711
|
|
173
|
712 return retval;
|
|
0
|
713 }
|
|
|
714
|
|
203
|
715 DEFUN ("put-database", Fput_database, 3, 4, 0, /*
|
|
185
|
716 Store KEY and VAL in DATABASE. If optional fourth arg REPLACE is
|
|
0
|
717 non-nil, replace any existing entry in the database.
|
|
20
|
718 */
|
|
|
719 (key, val, dbase, replace))
|
|
0
|
720 {
|
|
185
|
721 CHECK_LIVE_DATABASE (dbase);
|
|
0
|
722 CHECK_STRING (key);
|
|
177
|
723 CHECK_STRING (val);
|
|
0
|
724
|
|
185
|
725 {
|
|
|
726 int status =
|
|
|
727 XDATABASE (dbase)->funcs->put (XDATABASE (dbase), key, val, replace);
|
|
|
728 return status ? Qt : Qnil;
|
|
|
729 }
|
|
0
|
730 }
|
|
|
731
|
|
203
|
732 DEFUN ("remove-database", Fremove_database, 2, 2, 0, /*
|
|
0
|
733 Remove KEY from DATABASE.
|
|
20
|
734 */
|
|
|
735 (key, dbase))
|
|
0
|
736 {
|
|
185
|
737 CHECK_LIVE_DATABASE (dbase);
|
|
0
|
738 CHECK_STRING (key);
|
|
|
739
|
|
185
|
740 return XDATABASE (dbase)->funcs->rem (XDATABASE (dbase), key) ? Qt : Qnil;
|
|
0
|
741 }
|
|
185
|
742
|
|
203
|
743 DEFUN ("get-database", Fget_database, 2, 3, 0, /*
|
|
0
|
744 Find value for KEY in DATABASE.
|
|
|
745 If there is no corresponding value, return DEFAULT (defaults to nil).
|
|
20
|
746 */
|
|
173
|
747 (key, dbase, default_))
|
|
0
|
748 {
|
|
|
749
|
|
185
|
750 CHECK_LIVE_DATABASE (dbase);
|
|
0
|
751 CHECK_STRING (key);
|
|
|
752
|
|
185
|
753 {
|
|
|
754 Lisp_Object retval =
|
|
|
755 XDATABASE (dbase)->funcs->get (XDATABASE (dbase), key);
|
|
|
756 return NILP (retval) ? default_ : retval;
|
|
|
757 }
|
|
0
|
758 }
|
|
|
759
|
|
20
|
760 DEFUN ("map-database", Fmapdatabase, 2, 2, 0, /*
|
|
0
|
761 Map FUNCTION over entries in DATABASE, calling it with two args,
|
|
|
762 each key and value in the database.
|
|
20
|
763 */
|
|
|
764 (function, dbase))
|
|
0
|
765 {
|
|
185
|
766 CHECK_LIVE_DATABASE (dbase);
|
|
0
|
767
|
|
185
|
768 XDATABASE (dbase)->funcs->map (XDATABASE (dbase), function);
|
|
|
769
|
|
0
|
770 return Qnil;
|
|
|
771 }
|
|
|
772
|
|
|
773 void
|
|
|
774 syms_of_dbm (void)
|
|
|
775 {
|
|
|
776 defsymbol (&Qdatabasep, "databasep");
|
|
|
777 #ifdef HAVE_DBM
|
|
|
778 defsymbol (&Qdbm, "dbm");
|
|
|
779 #endif
|
|
|
780 #ifdef HAVE_BERKELEY_DB
|
|
|
781 defsymbol (&Qberkeley_db, "berkeley-db");
|
|
|
782 defsymbol (&Qhash, "hash");
|
|
|
783 defsymbol (&Qbtree, "btree");
|
|
|
784 defsymbol (&Qrecno, "recno");
|
|
|
785 #endif
|
|
|
786
|
|
203
|
787 DEFSUBR (Fopen_database);
|
|
20
|
788 DEFSUBR (Fdatabasep);
|
|
|
789 DEFSUBR (Fmapdatabase);
|
|
203
|
790 DEFSUBR (Fput_database);
|
|
|
791 DEFSUBR (Fget_database);
|
|
|
792 DEFSUBR (Fremove_database);
|
|
20
|
793 DEFSUBR (Fdatabase_type);
|
|
|
794 DEFSUBR (Fdatabase_subtype);
|
|
203
|
795 DEFSUBR (Fdatabase_last_error);
|
|
20
|
796 DEFSUBR (Fdatabase_live_p);
|
|
|
797 DEFSUBR (Fdatabase_file_name);
|
|
203
|
798 DEFSUBR (Fclose_database);
|
|
0
|
799 }
|
|
|
800
|
|
|
801 void
|
|
|
802 vars_of_dbm (void)
|
|
|
803 {
|
|
|
804 #ifdef HAVE_DBM
|
|
|
805 Fprovide (Qdbm);
|
|
|
806 #endif
|
|
|
807 #ifdef HAVE_BERKELEY_DB
|
|
|
808 Fprovide (Qberkeley_db);
|
|
|
809 #endif
|
|
|
810 }
|
