Mercurial > hg > xemacs-beta
annotate src/database.c @ 4645:f2a991ff6db0
Do not #'split-path on nil #'getenv result. <877hz7lzrt.fsf@yahoo.com.cn>
| author | Jerry James <james@xemacs.org> |
|---|---|
| date | Mon, 29 Jun 2009 08:20:47 -0600 |
| parents | bc3b9f61018e |
| children | 0e1461b592ce |
| rev | line source |
|---|---|
| 428 | 1 /* Database access routines |
| 2 Copyright (C) 1996, William M. Perry | |
| 3025 | 3 Copyright (C) 2001, 2002, 2005 Ben Wing. |
| 428 | 4 |
| 5 This file is part of XEmacs. | |
| 6 | |
| 7 XEmacs is free software; you can redistribute it and/or modify it | |
| 8 under the terms of the GNU General Public License as published by the | |
| 9 Free Software Foundation; either version 2, or (at your option) any | |
| 10 later version. | |
| 11 | |
| 12 XEmacs is distributed in the hope that it will be useful, but WITHOUT | |
| 13 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
| 14 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
| 15 for more details. | |
| 16 | |
| 17 You should have received a copy of the GNU General Public License | |
| 18 along with XEmacs; see the file COPYING. If not, write to | |
| 19 the Free Software Foundation, Inc., 59 Temple Place - Suite 330, | |
| 20 Boston, MA 02111-1307, USA. */ | |
| 21 | |
| 22 /* Synched up with: Not in FSF. */ | |
| 23 | |
| 24 /* Written by Bill Perry */ | |
| 25 /* Substantially rewritten by Martin Buchholz */ | |
| 26 /* db 2.x support added by Andreas Jaeger */ | |
| 771 | 27 /* Mule-ized 6-22-00 Ben Wing */ |
| 428 | 28 |
| 29 #include <config.h> | |
| 30 #include "lisp.h" | |
| 771 | 31 |
| 428 | 32 #include "sysfile.h" |
| 33 #include "buffer.h" | |
|
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34 #include "file-coding.h" |
| 428 | 35 |
| 36 #ifndef HAVE_DATABASE | |
| 37 #error HAVE_DATABASE not defined!! | |
| 38 #endif | |
| 39 | |
| 40 #include "database.h" /* Our include file */ | |
| 41 | |
| 42 #ifdef HAVE_BERKELEY_DB | |
| 43 /* Work around Berkeley DB's use of int types which are defined | |
| 44 slightly differently in the not quite yet standard <inttypes.h>. | |
| 45 See db.h for details of why we're resorting to this... */ | |
| 46 /* glibc 2.1 doesn't have this problem with DB 2.x */ | |
| 47 #if !(defined __GLIBC__ && __GLIBC_MINOR__ >= 1) | |
| 48 #ifdef HAVE_INTTYPES_H | |
| 3739 | 49 #ifndef __BIT_TYPES_DEFINED__ |
| 428 | 50 #define __BIT_TYPES_DEFINED__ |
| 3739 | 51 #endif |
| 428 | 52 #include <inttypes.h> |
| 3739 | 53 #if !HAVE_U_INT8_T |
| 428 | 54 typedef uint8_t u_int8_t; |
| 3739 | 55 #endif |
| 56 #if !HAVE_U_INT16_T | |
| 428 | 57 typedef uint16_t u_int16_t; |
| 3739 | 58 #endif |
| 59 #if !HAVE_U_INT32_T | |
| 428 | 60 typedef uint32_t u_int32_t; |
| 3739 | 61 #endif |
| 428 | 62 #ifdef WE_DONT_NEED_QUADS |
| 3739 | 63 #if !HAVE_U_INT64_T |
| 428 | 64 typedef uint64_t u_int64_t; |
| 3739 | 65 #endif |
| 428 | 66 #endif /* WE_DONT_NEED_QUADS */ |
| 67 #endif /* HAVE_INTTYPES_H */ | |
| 68 #endif /* !(defined __GLIBC__ && __GLIBC_MINOR__ >= 1) */ | |
| 1460 | 69 /* Berkeley DB wants __STDC__ to be defined; else if does `#define const' */ |
| 70 #if ! defined (__STDC__) && ! defined(__cplusplus) | |
| 71 #define __STDC__ 0 | |
| 72 #endif | |
| 442 | 73 #include DB_H_FILE /* Berkeley db's header file */ |
| 428 | 74 #ifndef DB_VERSION_MAJOR |
| 75 # define DB_VERSION_MAJOR 1 | |
| 76 #endif /* DB_VERSION_MAJOR */ | |
| 1141 | 77 #ifndef DB_VERSION_MINOR |
| 78 # define DB_VERSION_MINOR 0 | |
| 79 #endif /* DB_VERSION_MINOR */ | |
| 428 | 80 Lisp_Object Qberkeley_db; |
| 81 Lisp_Object Qhash, Qbtree, Qrecno, Qunknown; | |
| 448 | 82 #if DB_VERSION_MAJOR > 2 |
| 83 Lisp_Object Qqueue; | |
| 84 #endif | |
| 428 | 85 #endif /* HAVE_BERKELEY_DB */ |
| 86 | |
| 87 #ifdef HAVE_DBM | |
| 88 #include <ndbm.h> | |
| 89 Lisp_Object Qdbm; | |
| 90 #endif /* HAVE_DBM */ | |
| 91 | |
| 92 Lisp_Object Vdatabase_coding_system; | |
| 93 | |
| 94 Lisp_Object Qdatabasep; | |
| 95 | |
| 96 typedef struct | |
| 97 { | |
| 98 Lisp_Object (*get_subtype) (Lisp_Database *); | |
| 99 Lisp_Object (*get_type) (Lisp_Database *); | |
| 100 Lisp_Object (*get) (Lisp_Database *, Lisp_Object); | |
| 101 int (*put) (Lisp_Database *, Lisp_Object, Lisp_Object, Lisp_Object); | |
| 102 int (*rem) (Lisp_Database *, Lisp_Object); | |
| 103 void (*map) (Lisp_Database *, Lisp_Object); | |
| 104 void (*close) (Lisp_Database *); | |
| 105 Lisp_Object (*last_error) (Lisp_Database *); | |
| 106 } DB_FUNCS; | |
| 107 | |
| 108 struct Lisp_Database | |
| 109 { | |
| 3017 | 110 struct LCRECORD_HEADER header; |
| 428 | 111 Lisp_Object fname; |
| 112 int mode; | |
| 113 int access_; | |
| 114 int dberrno; | |
| 115 int live_p; | |
| 116 #ifdef HAVE_DBM | |
| 117 DBM *dbm_handle; | |
| 118 #endif | |
| 119 #ifdef HAVE_BERKELEY_DB | |
| 120 DB *db_handle; | |
| 121 #endif | |
| 122 DB_FUNCS *funcs; | |
| 123 Lisp_Object coding_system; | |
| 124 }; | |
| 125 | |
| 126 #define XDATABASE(x) XRECORD (x, database, Lisp_Database) | |
| 617 | 127 #define wrap_database(p) wrap_record (p, database) |
| 428 | 128 #define DATABASEP(x) RECORDP (x, database) |
| 129 #define CHECK_DATABASE(x) CHECK_RECORD (x, database) | |
| 130 #define CONCHECK_DATABASE(x) CONCHECK_RECORD (x, database) | |
| 131 #define DATABASE_LIVE_P(x) (x->live_p) | |
| 132 | |
| 133 #define CHECK_LIVE_DATABASE(db) do { \ | |
| 134 CHECK_DATABASE (db); \ | |
| 135 if (!DATABASE_LIVE_P (XDATABASE(db))) \ | |
| 563 | 136 invalid_operation ("Attempting to access closed database", db); \ |
| 428 | 137 } while (0) |
| 138 | |
| 139 | |
| 140 static Lisp_Database * | |
| 141 allocate_database (void) | |
| 142 { | |
| 3017 | 143 Lisp_Database *db = ALLOC_LCRECORD_TYPE (Lisp_Database, &lrecord_database); |
| 428 | 144 |
| 145 db->fname = Qnil; | |
| 146 db->live_p = 0; | |
| 147 #ifdef HAVE_BERKELEY_DB | |
| 148 db->db_handle = NULL; | |
| 149 #endif | |
| 150 #ifdef HAVE_DBM | |
| 151 db->dbm_handle = NULL; | |
| 152 #endif | |
| 153 db->access_ = 0; | |
| 154 db->mode = 0; | |
| 155 db->dberrno = 0; | |
| 771 | 156 db->coding_system = Qnil; |
| 428 | 157 return db; |
| 158 } | |
| 159 | |
| 1204 | 160 static const struct memory_description database_description[] = { |
| 934 | 161 { XD_LISP_OBJECT, offsetof (struct Lisp_Database, fname) }, |
| 162 { XD_END} | |
| 163 }; | |
| 164 | |
| 428 | 165 static Lisp_Object |
| 444 | 166 mark_database (Lisp_Object object) |
| 428 | 167 { |
| 444 | 168 Lisp_Database *db = XDATABASE (object); |
| 428 | 169 return db->fname; |
| 170 } | |
| 171 | |
| 172 static void | |
| 2286 | 173 print_database (Lisp_Object obj, Lisp_Object printcharfun, |
| 174 int UNUSED (escapeflag)) | |
| 428 | 175 { |
| 176 Lisp_Database *db = XDATABASE (obj); | |
| 177 | |
| 178 if (print_readably) | |
| 563 | 179 printing_unreadable_object ("#<database 0x%x>", db->header.uid); |
| 428 | 180 |
| 793 | 181 write_fmt_string_lisp (printcharfun, "#<database \"%s\" (%s/%s/", |
| 182 3, db->fname, db->funcs->get_type (db), | |
| 183 db->funcs->get_subtype (db)); | |
| 184 | |
|
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bc3b9f61018e
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parents:
4124
diff
changeset
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185 write_fmt_string (printcharfun, "%s) ", |
| 793 | 186 (!DATABASE_LIVE_P (db) ? "closed" : |
| 187 (db->access_ & O_WRONLY) ? "writeonly" : | |
|
4351
bc3b9f61018e
Respect the CODESYS argument in #'open-database; don't autodetect EOL.
Aidan Kehoe <kehoea@parhasard.net>
parents:
4124
diff
changeset
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188 (db->access_ & O_RDWR) ? "readwrite" : "readonly")); |
|
bc3b9f61018e
Respect the CODESYS argument in #'open-database; don't autodetect EOL.
Aidan Kehoe <kehoea@parhasard.net>
parents:
4124
diff
changeset
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189 |
|
bc3b9f61018e
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Aidan Kehoe <kehoea@parhasard.net>
parents:
4124
diff
changeset
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190 write_fmt_string_lisp (printcharfun, "coding: %s ", 1, |
|
bc3b9f61018e
Respect the CODESYS argument in #'open-database; don't autodetect EOL.
Aidan Kehoe <kehoea@parhasard.net>
parents:
4124
diff
changeset
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191 XSYMBOL_NAME (XCODING_SYSTEM_NAME |
|
bc3b9f61018e
Respect the CODESYS argument in #'open-database; don't autodetect EOL.
Aidan Kehoe <kehoea@parhasard.net>
parents:
4124
diff
changeset
|
192 (db->coding_system))); |
|
bc3b9f61018e
Respect the CODESYS argument in #'open-database; don't autodetect EOL.
Aidan Kehoe <kehoea@parhasard.net>
parents:
4124
diff
changeset
|
193 |
|
bc3b9f61018e
Respect the CODESYS argument in #'open-database; don't autodetect EOL.
Aidan Kehoe <kehoea@parhasard.net>
parents:
4124
diff
changeset
|
194 write_fmt_string (printcharfun, "0x%x>", db->header.uid); |
| 428 | 195 } |
| 196 | |
| 197 static void | |
| 198 finalize_database (void *header, int for_disksave) | |
| 199 { | |
| 200 Lisp_Database *db = (Lisp_Database *) header; | |
| 201 | |
| 202 if (for_disksave) | |
| 203 { | |
| 563 | 204 invalid_operation |
| 793 | 205 ("Can't dump an emacs containing database objects", |
| 206 wrap_database (db)); | |
| 428 | 207 } |
| 208 db->funcs->close (db); | |
| 209 } | |
| 210 | |
| 934 | 211 DEFINE_LRECORD_IMPLEMENTATION ("database", database, |
| 212 0, /*dumpable-flag*/ | |
| 213 mark_database, print_database, | |
| 214 finalize_database, 0, 0, | |
| 215 database_description, | |
| 216 Lisp_Database); | |
| 428 | 217 |
| 218 DEFUN ("close-database", Fclose_database, 1, 1, 0, /* | |
| 219 Close database DATABASE. | |
| 220 */ | |
| 221 (database)) | |
| 222 { | |
| 223 Lisp_Database *db; | |
| 224 CHECK_LIVE_DATABASE (database); | |
| 225 db = XDATABASE (database); | |
| 226 db->funcs->close (db); | |
| 227 db->live_p = 0; | |
| 228 return Qnil; | |
| 229 } | |
| 230 | |
| 231 DEFUN ("database-type", Fdatabase_type, 1, 1, 0, /* | |
| 232 Return the type of database DATABASE. | |
| 233 */ | |
| 234 (database)) | |
| 235 { | |
| 236 CHECK_DATABASE (database); | |
| 237 | |
| 238 return XDATABASE (database)->funcs->get_type (XDATABASE (database)); | |
| 239 } | |
| 240 | |
| 241 DEFUN ("database-subtype", Fdatabase_subtype, 1, 1, 0, /* | |
| 242 Return the subtype of database DATABASE, if any. | |
| 243 */ | |
| 244 (database)) | |
| 245 { | |
| 246 CHECK_DATABASE (database); | |
| 247 | |
| 248 return XDATABASE (database)->funcs->get_subtype (XDATABASE (database)); | |
| 249 } | |
| 250 | |
| 251 DEFUN ("database-live-p", Fdatabase_live_p, 1, 1, 0, /* | |
| 444 | 252 Return t if OBJECT is an active database. |
| 428 | 253 */ |
| 444 | 254 (object)) |
| 428 | 255 { |
| 444 | 256 return DATABASEP (object) && DATABASE_LIVE_P (XDATABASE (object)) ? |
| 257 Qt : Qnil; | |
| 428 | 258 } |
| 259 | |
| 260 DEFUN ("database-file-name", Fdatabase_file_name, 1, 1, 0, /* | |
| 261 Return the filename associated with the database DATABASE. | |
| 262 */ | |
| 263 (database)) | |
| 264 { | |
| 265 CHECK_DATABASE (database); | |
| 266 | |
| 267 return XDATABASE (database)->fname; | |
| 268 } | |
| 269 | |
| 270 DEFUN ("databasep", Fdatabasep, 1, 1, 0, /* | |
| 444 | 271 Return t if OBJECT is a database. |
| 428 | 272 */ |
| 444 | 273 (object)) |
| 428 | 274 { |
| 444 | 275 return DATABASEP (object) ? Qt : Qnil; |
| 428 | 276 } |
| 277 | |
| 278 #ifdef HAVE_DBM | |
| 279 static void | |
| 280 dbm_map (Lisp_Database *db, Lisp_Object func) | |
| 281 { | |
| 282 datum keydatum, valdatum; | |
| 283 Lisp_Object key, val; | |
| 284 | |
| 285 for (keydatum = dbm_firstkey (db->dbm_handle); | |
| 286 keydatum.dptr != NULL; | |
| 287 keydatum = dbm_nextkey (db->dbm_handle)) | |
| 288 { | |
| 289 valdatum = dbm_fetch (db->dbm_handle, keydatum); | |
| 4124 | 290 key = make_ext_string ((Extbyte *) keydatum.dptr, keydatum.dsize, |
| 771 | 291 db->coding_system); |
| 4124 | 292 val = make_ext_string ((Extbyte *) valdatum.dptr, valdatum.dsize, |
| 771 | 293 db->coding_system); |
| 428 | 294 call2 (func, key, val); |
| 295 } | |
| 296 } | |
| 297 | |
| 298 static Lisp_Object | |
| 299 dbm_get (Lisp_Database *db, Lisp_Object key) | |
| 300 { | |
| 301 datum keydatum, valdatum; | |
| 302 | |
| 771 | 303 TO_EXTERNAL_FORMAT (LISP_STRING, key, |
| 304 ALLOCA, (keydatum.dptr, keydatum.dsize), | |
| 305 db->coding_system); | |
| 428 | 306 valdatum = dbm_fetch (db->dbm_handle, keydatum); |
| 307 | |
| 308 return (valdatum.dptr | |
| 4124 | 309 ? make_ext_string ((Extbyte *) valdatum.dptr, valdatum.dsize, |
| 771 | 310 db->coding_system) |
| 428 | 311 : Qnil); |
| 312 } | |
| 313 | |
| 314 static int | |
| 315 dbm_put (Lisp_Database *db, | |
| 316 Lisp_Object key, Lisp_Object val, Lisp_Object replace) | |
| 317 { | |
| 318 datum keydatum, valdatum; | |
| 319 | |
| 771 | 320 TO_EXTERNAL_FORMAT (LISP_STRING, val, |
| 321 ALLOCA, (valdatum.dptr, valdatum.dsize), | |
| 322 db->coding_system); | |
| 323 TO_EXTERNAL_FORMAT (LISP_STRING, key, | |
| 324 ALLOCA, (keydatum.dptr, keydatum.dsize), | |
| 325 db->coding_system); | |
| 428 | 326 |
| 327 return !dbm_store (db->dbm_handle, keydatum, valdatum, | |
| 328 NILP (replace) ? DBM_INSERT : DBM_REPLACE); | |
| 329 } | |
| 330 | |
| 331 static int | |
| 332 dbm_remove (Lisp_Database *db, Lisp_Object key) | |
| 333 { | |
| 334 datum keydatum; | |
| 335 | |
| 771 | 336 TO_EXTERNAL_FORMAT (LISP_STRING, key, |
| 337 ALLOCA, (keydatum.dptr, keydatum.dsize), | |
| 338 db->coding_system); | |
| 428 | 339 |
| 340 return dbm_delete (db->dbm_handle, keydatum); | |
| 341 } | |
| 342 | |
| 343 static Lisp_Object | |
| 2494 | 344 dbm_type (Lisp_Database *UNUSED (db)) |
| 428 | 345 { |
| 346 return Qdbm; | |
| 347 } | |
| 348 | |
| 349 static Lisp_Object | |
| 2494 | 350 dbm_subtype (Lisp_Database *UNUSED (db)) |
| 428 | 351 { |
| 352 return Qnil; | |
| 353 } | |
| 354 | |
| 355 static Lisp_Object | |
| 356 dbm_lasterr (Lisp_Database *db) | |
| 357 { | |
| 358 return lisp_strerror (db->dberrno); | |
| 359 } | |
| 360 | |
| 361 static void | |
| 362 dbm_closeit (Lisp_Database *db) | |
| 363 { | |
| 364 if (db->dbm_handle) | |
| 365 { | |
| 366 dbm_close (db->dbm_handle); | |
| 367 db->dbm_handle = NULL; | |
| 368 } | |
| 369 } | |
| 370 | |
| 371 static DB_FUNCS ndbm_func_block = | |
| 372 { | |
| 373 dbm_subtype, | |
| 374 dbm_type, | |
| 375 dbm_get, | |
| 376 dbm_put, | |
| 377 dbm_remove, | |
| 378 dbm_map, | |
| 379 dbm_closeit, | |
| 380 dbm_lasterr | |
| 381 }; | |
| 382 #endif /* HAVE_DBM */ | |
| 383 | |
| 384 #ifdef HAVE_BERKELEY_DB | |
| 385 static Lisp_Object | |
| 2286 | 386 berkdb_type (Lisp_Database *UNUSED (db)) |
| 428 | 387 { |
| 388 return Qberkeley_db; | |
| 389 } | |
| 390 | |
| 391 static Lisp_Object | |
| 392 berkdb_subtype (Lisp_Database *db) | |
| 393 { | |
| 394 if (!db->db_handle) | |
| 395 return Qnil; | |
| 396 | |
| 397 switch (db->db_handle->type) | |
| 398 { | |
| 399 case DB_BTREE: return Qbtree; | |
| 400 case DB_HASH: return Qhash; | |
| 401 case DB_RECNO: return Qrecno; | |
| 448 | 402 #if DB_VERSION_MAJOR > 2 |
| 403 case DB_QUEUE: return Qqueue; | |
| 404 #endif | |
| 428 | 405 default: return Qunknown; |
| 406 } | |
| 407 } | |
| 408 | |
| 409 static Lisp_Object | |
| 410 berkdb_lasterr (Lisp_Database *db) | |
| 411 { | |
| 412 return lisp_strerror (db->dberrno); | |
| 413 } | |
| 414 | |
| 415 static Lisp_Object | |
| 416 berkdb_get (Lisp_Database *db, Lisp_Object key) | |
| 417 { | |
| 418 DBT keydatum, valdatum; | |
| 419 int status = 0; | |
| 420 | |
| 421 /* DB Version 2 requires DBT's to be zeroed before use. */ | |
| 422 xzero (keydatum); | |
| 423 xzero (valdatum); | |
| 424 | |
| 771 | 425 TO_EXTERNAL_FORMAT (LISP_STRING, key, |
| 426 ALLOCA, (keydatum.data, keydatum.size), | |
| 427 db->coding_system); | |
| 428 | 428 |
| 429 #if DB_VERSION_MAJOR == 1 | |
| 430 status = db->db_handle->get (db->db_handle, &keydatum, &valdatum, 0); | |
| 431 #else | |
| 432 status = db->db_handle->get (db->db_handle, NULL, &keydatum, &valdatum, 0); | |
| 433 #endif /* DB_VERSION_MAJOR */ | |
| 434 | |
| 435 if (!status) | |
| 1645 | 436 return make_ext_string ((const Extbyte *) valdatum.data, valdatum.size, |
| 771 | 437 db->coding_system); |
| 428 | 438 |
| 439 #if DB_VERSION_MAJOR == 1 | |
| 440 db->dberrno = (status == 1) ? -1 : errno; | |
| 441 #else | |
| 442 db->dberrno = (status < 0) ? -1 : errno; | |
| 443 #endif /* DB_VERSION_MAJOR */ | |
| 444 | |
| 445 return Qnil; | |
| 446 } | |
| 447 | |
| 448 static int | |
| 449 berkdb_put (Lisp_Database *db, | |
| 450 Lisp_Object key, | |
| 451 Lisp_Object val, | |
| 452 Lisp_Object replace) | |
| 453 { | |
| 454 DBT keydatum, valdatum; | |
| 455 int status = 0; | |
| 456 | |
| 457 /* DB Version 2 requires DBT's to be zeroed before use. */ | |
| 458 xzero (keydatum); | |
| 459 xzero (valdatum); | |
| 460 | |
| 771 | 461 TO_EXTERNAL_FORMAT (LISP_STRING, key, |
| 462 ALLOCA, (keydatum.data, keydatum.size), | |
| 463 db->coding_system); | |
| 464 TO_EXTERNAL_FORMAT (LISP_STRING, val, | |
| 465 ALLOCA, (valdatum.data, valdatum.size), | |
| 466 db->coding_system); | |
| 428 | 467 #if DB_VERSION_MAJOR == 1 |
| 468 status = db->db_handle->put (db->db_handle, &keydatum, &valdatum, | |
| 469 NILP (replace) ? R_NOOVERWRITE : 0); | |
| 470 db->dberrno = (status == 1) ? -1 : errno; | |
| 471 #else | |
| 472 status = db->db_handle->put (db->db_handle, NULL, &keydatum, &valdatum, | |
| 473 NILP (replace) ? DB_NOOVERWRITE : 0); | |
| 474 db->dberrno = (status < 0) ? -1 : errno; | |
| 475 #endif/* DV_VERSION_MAJOR = 2 */ | |
| 476 | |
| 477 return status; | |
| 478 } | |
| 479 | |
| 480 static int | |
| 481 berkdb_remove (Lisp_Database *db, Lisp_Object key) | |
| 482 { | |
| 483 DBT keydatum; | |
| 484 int status; | |
| 485 | |
| 486 /* DB Version 2 requires DBT's to be zeroed before use. */ | |
| 487 xzero (keydatum); | |
| 488 | |
| 771 | 489 TO_EXTERNAL_FORMAT (LISP_STRING, key, |
| 490 ALLOCA, (keydatum.data, keydatum.size), | |
| 491 db->coding_system); | |
| 428 | 492 |
| 493 #if DB_VERSION_MAJOR == 1 | |
| 494 status = db->db_handle->del (db->db_handle, &keydatum, 0); | |
| 495 #else | |
| 496 status = db->db_handle->del (db->db_handle, NULL, &keydatum, 0); | |
| 497 #endif /* DB_VERSION_MAJOR */ | |
| 498 | |
| 499 if (!status) | |
| 500 return 0; | |
| 501 | |
| 502 #if DB_VERSION_MAJOR == 1 | |
| 503 db->dberrno = (status == 1) ? -1 : errno; | |
| 504 #else | |
| 505 db->dberrno = (status < 0) ? -1 : errno; | |
| 506 #endif /* DB_VERSION_MAJOR */ | |
| 507 | |
| 508 return 1; | |
| 509 } | |
| 510 | |
| 511 static void | |
| 512 berkdb_map (Lisp_Database *db, Lisp_Object func) | |
| 513 { | |
| 514 DBT keydatum, valdatum; | |
| 515 Lisp_Object key, val; | |
| 516 DB *dbp = db->db_handle; | |
| 517 int status; | |
| 518 | |
| 519 xzero (keydatum); | |
| 520 xzero (valdatum); | |
| 521 | |
| 522 #if DB_VERSION_MAJOR == 1 | |
| 523 for (status = dbp->seq (dbp, &keydatum, &valdatum, R_FIRST); | |
| 524 status == 0; | |
| 525 status = dbp->seq (dbp, &keydatum, &valdatum, R_NEXT)) | |
| 526 { | |
| 2646 | 527 key = make_ext_string ((const Extbyte *) keydatum.data, keydatum.size, |
| 771 | 528 db->coding_system); |
| 2646 | 529 val = make_ext_string ((const Extbyte *) valdatum.data, valdatum.size, |
| 771 | 530 db->coding_system); |
| 428 | 531 call2 (func, key, val); |
| 532 } | |
| 533 #else | |
| 534 { | |
| 535 DBC *dbcp; | |
| 536 | |
| 537 #if DB_VERSION_MAJOR > 2 || DB_VERSION_MINOR >=6 | |
| 538 status = dbp->cursor (dbp, NULL, &dbcp, 0); | |
| 539 #else | |
| 540 status = dbp->cursor (dbp, NULL, &dbcp); | |
| 440 | 541 #endif |
| 428 | 542 for (status = dbcp->c_get (dbcp, &keydatum, &valdatum, DB_FIRST); |
| 543 status == 0; | |
| 544 status = dbcp->c_get (dbcp, &keydatum, &valdatum, DB_NEXT)) | |
| 545 { | |
| 1645 | 546 key = make_ext_string ((const Extbyte *) keydatum.data, keydatum.size, |
| 771 | 547 db->coding_system); |
| 1645 | 548 val = make_ext_string ((const Extbyte *) valdatum.data, valdatum.size, |
| 771 | 549 db->coding_system); |
| 428 | 550 call2 (func, key, val); |
| 551 } | |
| 552 dbcp->c_close (dbcp); | |
| 553 } | |
| 554 #endif /* DB_VERSION_MAJOR */ | |
| 555 } | |
| 556 | |
| 557 static void | |
| 558 berkdb_close (Lisp_Database *db) | |
| 559 { | |
| 560 if (db->db_handle) | |
| 561 { | |
| 562 #if DB_VERSION_MAJOR == 1 | |
| 563 db->db_handle->sync (db->db_handle, 0); | |
| 564 db->db_handle->close (db->db_handle); | |
| 565 #else | |
| 566 db->db_handle->sync (db->db_handle, 0); | |
| 567 db->db_handle->close (db->db_handle, 0); | |
| 568 #endif /* DB_VERSION_MAJOR */ | |
| 569 db->db_handle = NULL; | |
| 570 } | |
| 571 } | |
| 572 | |
| 573 static DB_FUNCS berk_func_block = | |
| 574 { | |
| 575 berkdb_subtype, | |
| 576 berkdb_type, | |
| 577 berkdb_get, | |
| 578 berkdb_put, | |
| 579 berkdb_remove, | |
| 580 berkdb_map, | |
| 581 berkdb_close, | |
| 582 berkdb_lasterr | |
| 583 }; | |
| 584 #endif /* HAVE_BERKELEY_DB */ | |
| 585 | |
| 586 DEFUN ("database-last-error", Fdatabase_last_error, 0, 1, 0, /* | |
| 587 Return the last error associated with DATABASE. | |
| 588 */ | |
| 589 (database)) | |
| 590 { | |
| 591 if (NILP (database)) | |
| 592 return lisp_strerror (errno); | |
| 593 | |
| 594 CHECK_DATABASE (database); | |
| 595 | |
| 596 return XDATABASE (database)->funcs->last_error (XDATABASE (database)); | |
| 597 } | |
| 598 | |
| 771 | 599 DEFUN ("open-database", Fopen_database, 1, 6, 0, /* |
| 428 | 600 Return a new database object opened on FILE. |
| 601 Optional arguments TYPE and SUBTYPE specify the database type. | |
| 602 Optional argument ACCESS specifies the access rights, which may be any | |
| 603 combination of 'r' 'w' and '+', for read, write, and creation flags. | |
| 604 Optional argument MODE gives the permissions to use when opening FILE, | |
| 605 and defaults to 0755. | |
| 771 | 606 Optional argument CODESYS specifies the coding system used to encode/decode |
| 607 data passed to/from the database, and defaults to the value of the | |
| 608 variable `database-coding-system'. | |
| 428 | 609 */ |
| 771 | 610 (file, type, subtype, access_, mode, codesys)) |
| 428 | 611 { |
| 612 /* This function can GC */ | |
| 613 int modemask; | |
| 614 int accessmask = 0; | |
| 615 Lisp_Database *db = NULL; | |
| 616 char *filename; | |
| 617 struct gcpro gcpro1, gcpro2; | |
| 618 | |
| 619 CHECK_STRING (file); | |
| 620 GCPRO2 (file, access_); | |
| 621 file = Fexpand_file_name (file, Qnil); | |
| 622 UNGCPRO; | |
| 623 | |
| 440 | 624 TO_EXTERNAL_FORMAT (LISP_STRING, file, |
| 625 C_STRING_ALLOCA, filename, | |
| 626 Qfile_name); | |
| 428 | 627 |
| 628 if (NILP (access_)) | |
| 629 { | |
| 630 accessmask = O_RDWR | O_CREAT; | |
| 631 } | |
| 632 else | |
| 633 { | |
| 634 char *acc; | |
| 635 CHECK_STRING (access_); | |
| 636 acc = (char *) XSTRING_DATA (access_); | |
| 637 | |
| 638 if (strchr (acc, '+')) | |
| 639 accessmask |= O_CREAT; | |
| 640 | |
| 641 { | |
| 642 char *rp = strchr (acc, 'r'); | |
| 643 char *wp = strchr (acc, 'w'); | |
| 644 if (rp && wp) accessmask |= O_RDWR; | |
| 645 else if (wp) accessmask |= O_WRONLY; | |
| 646 else accessmask |= O_RDONLY; | |
| 647 } | |
| 648 } | |
| 649 | |
| 650 if (NILP (mode)) | |
| 651 { | |
| 652 modemask = 0755; /* rwxr-xr-x */ | |
| 653 } | |
| 654 else | |
| 655 { | |
| 656 CHECK_INT (mode); | |
| 657 modemask = XINT (mode); | |
| 658 } | |
| 659 | |
| 771 | 660 if (NILP (codesys)) |
| 661 codesys = Vdatabase_coding_system; | |
| 662 | |
|
4351
bc3b9f61018e
Respect the CODESYS argument in #'open-database; don't autodetect EOL.
Aidan Kehoe <kehoea@parhasard.net>
parents:
4124
diff
changeset
|
663 codesys = get_coding_system_for_text_file (codesys, 0); |
| 771 | 664 |
| 428 | 665 #ifdef HAVE_DBM |
| 666 if (NILP (type) || EQ (type, Qdbm)) | |
| 667 { | |
| 668 DBM *dbase = dbm_open (filename, accessmask, modemask); | |
| 669 if (!dbase) | |
| 670 return Qnil; | |
| 671 | |
| 672 db = allocate_database (); | |
| 673 db->dbm_handle = dbase; | |
| 674 db->funcs = &ndbm_func_block; | |
| 771 | 675 db->coding_system = codesys; |
| 428 | 676 goto db_done; |
| 677 } | |
| 678 #endif /* HAVE_DBM */ | |
| 679 | |
| 680 #ifdef HAVE_BERKELEY_DB | |
| 681 if (NILP (type) || EQ (type, Qberkeley_db)) | |
| 682 { | |
| 683 DBTYPE real_subtype; | |
| 684 DB *dbase; | |
| 685 #if DB_VERSION_MAJOR != 1 | |
| 686 int status; | |
| 687 #endif | |
| 688 | |
| 689 if (EQ (subtype, Qhash) || NILP (subtype)) | |
| 690 real_subtype = DB_HASH; | |
| 691 else if (EQ (subtype, Qbtree)) | |
| 692 real_subtype = DB_BTREE; | |
| 693 else if (EQ (subtype, Qrecno)) | |
| 694 real_subtype = DB_RECNO; | |
| 448 | 695 #if DB_VERSION_MAJOR > 2 |
| 696 else if (EQ (subtype, Qqueue)) | |
| 697 real_subtype = DB_QUEUE; | |
| 698 #endif | |
| 428 | 699 else |
| 563 | 700 invalid_constant ("Unsupported subtype", subtype); |
| 428 | 701 |
| 702 #if DB_VERSION_MAJOR == 1 | |
| 703 dbase = dbopen (filename, accessmask, modemask, real_subtype, NULL); | |
| 704 if (!dbase) | |
| 705 return Qnil; | |
| 706 #else | |
| 707 /* Berkeley DB Version 2 has only the accessmask DB_CREATE and DB_RDONLY, | |
| 708 other flags shouldn't be set */ | |
| 709 if (NILP (access_)) | |
| 710 accessmask = DB_CREATE; | |
| 711 else | |
| 712 { | |
| 713 char *acc; | |
| 714 CHECK_STRING (access_); | |
| 715 acc = (char *) XSTRING_DATA (access_); | |
| 716 accessmask = 0; | |
| 717 | |
| 718 if (strchr (acc, '+')) | |
| 719 accessmask |= DB_CREATE; | |
| 720 | |
| 721 if (strchr (acc, 'r') && !strchr (acc, 'w')) | |
| 722 accessmask |= DB_RDONLY; | |
| 723 } | |
| 448 | 724 #if DB_VERSION_MAJOR == 2 |
| 428 | 725 status = db_open (filename, real_subtype, accessmask, |
| 726 modemask, NULL , NULL, &dbase); | |
| 727 if (status) | |
| 728 return Qnil; | |
| 448 | 729 #else |
| 730 status = db_create (&dbase, NULL, 0); | |
| 731 if (status) | |
| 732 return Qnil; | |
| 1141 | 733 #if DB_VERSION_MAJOR < 4 || (DB_VERSION_MAJOR == 4 && DB_VERSION_MINOR < 1) |
| 448 | 734 status = dbase->open (dbase, filename, NULL, |
| 735 real_subtype, accessmask, modemask); | |
| 1141 | 736 #else /* DB_VERSION >= 4.1 */ |
| 1377 | 737 /* You can't use DB_AUTO_COMMIT unless you have a txn environment. */ |
| 1141 | 738 status = dbase->open (dbase, NULL, filename, NULL, real_subtype, |
| 1377 | 739 accessmask, modemask); |
| 1141 | 740 #endif /* DB_VERSION < 4.1 */ |
| 448 | 741 if (status) |
| 742 { | |
| 743 dbase->close (dbase, 0); | |
| 744 return Qnil; | |
| 745 } | |
| 746 #endif /* DB_VERSION_MAJOR > 2 */ | |
| 747 /* Normalize into system specific file modes. Only for printing */ | |
| 748 accessmask = accessmask & DB_RDONLY ? O_RDONLY : O_RDWR; | |
| 428 | 749 #endif /* DB_VERSION_MAJOR */ |
| 750 | |
| 751 db = allocate_database (); | |
| 752 db->db_handle = dbase; | |
| 753 db->funcs = &berk_func_block; | |
| 771 | 754 db->coding_system = codesys; |
| 428 | 755 goto db_done; |
| 756 } | |
| 757 #endif /* HAVE_BERKELEY_DB */ | |
| 758 | |
| 563 | 759 invalid_constant ("Unsupported database type", type); |
| 428 | 760 return Qnil; |
| 761 | |
| 762 db_done: | |
| 763 db->live_p = 1; | |
| 764 db->fname = file; | |
| 765 db->mode = modemask; | |
| 766 db->access_ = accessmask; | |
| 767 | |
| 793 | 768 return wrap_database (db); |
| 428 | 769 } |
| 770 | |
| 771 DEFUN ("put-database", Fput_database, 3, 4, 0, /* | |
| 772 Store KEY and VALUE in DATABASE. | |
| 773 If optional fourth arg REPLACE is non-nil, | |
| 774 replace any existing entry in the database. | |
| 775 */ | |
| 776 (key, value, database, replace)) | |
| 777 { | |
| 778 CHECK_LIVE_DATABASE (database); | |
| 779 CHECK_STRING (key); | |
| 780 CHECK_STRING (value); | |
| 781 { | |
| 782 Lisp_Database *db = XDATABASE (database); | |
| 783 int status = db->funcs->put (db, key, value, replace); | |
| 784 return status ? Qt : Qnil; | |
| 785 } | |
| 786 } | |
| 787 | |
| 788 DEFUN ("remove-database", Fremove_database, 2, 2, 0, /* | |
| 789 Remove KEY from DATABASE. | |
| 790 */ | |
| 791 (key, database)) | |
| 792 { | |
| 793 CHECK_LIVE_DATABASE (database); | |
| 794 CHECK_STRING (key); | |
| 795 { | |
| 796 Lisp_Database *db = XDATABASE (database); | |
| 797 int status = db->funcs->rem (db, key); | |
| 798 return status ? Qt : Qnil; | |
| 799 } | |
| 800 } | |
| 801 | |
| 802 DEFUN ("get-database", Fget_database, 2, 3, 0, /* | |
| 803 Return value for KEY in DATABASE. | |
| 804 If there is no corresponding value, return DEFAULT (defaults to nil). | |
| 805 */ | |
| 806 (key, database, default_)) | |
| 807 { | |
| 808 CHECK_LIVE_DATABASE (database); | |
| 809 CHECK_STRING (key); | |
| 810 { | |
| 811 Lisp_Database *db = XDATABASE (database); | |
| 812 Lisp_Object retval = db->funcs->get (db, key); | |
| 813 return NILP (retval) ? default_ : retval; | |
| 814 } | |
| 815 } | |
| 816 | |
| 817 DEFUN ("map-database", Fmapdatabase, 2, 2, 0, /* | |
| 818 Map FUNCTION over entries in DATABASE, calling it with two args, | |
| 819 each key and value in the database. | |
| 820 */ | |
| 821 (function, database)) | |
| 822 { | |
| 823 CHECK_LIVE_DATABASE (database); | |
| 824 | |
| 825 XDATABASE (database)->funcs->map (XDATABASE (database), function); | |
| 826 | |
| 827 return Qnil; | |
| 828 } | |
| 829 | |
| 830 void | |
| 831 syms_of_database (void) | |
| 832 { | |
| 442 | 833 INIT_LRECORD_IMPLEMENTATION (database); |
| 834 | |
| 563 | 835 DEFSYMBOL (Qdatabasep); |
| 428 | 836 #ifdef HAVE_DBM |
| 563 | 837 DEFSYMBOL (Qdbm); |
| 428 | 838 #endif |
| 839 #ifdef HAVE_BERKELEY_DB | |
| 563 | 840 DEFSYMBOL (Qberkeley_db); |
| 841 DEFSYMBOL (Qhash); | |
| 842 DEFSYMBOL (Qbtree); | |
| 843 DEFSYMBOL (Qrecno); | |
| 448 | 844 #if DB_VERSION_MAJOR > 2 |
| 563 | 845 DEFSYMBOL (Qqueue); |
| 448 | 846 #endif |
| 563 | 847 DEFSYMBOL (Qunknown); |
| 428 | 848 #endif |
| 849 | |
| 850 DEFSUBR (Fopen_database); | |
| 851 DEFSUBR (Fdatabasep); | |
| 852 DEFSUBR (Fmapdatabase); | |
| 853 DEFSUBR (Fput_database); | |
| 854 DEFSUBR (Fget_database); | |
| 855 DEFSUBR (Fremove_database); | |
| 856 DEFSUBR (Fdatabase_type); | |
| 857 DEFSUBR (Fdatabase_subtype); | |
| 858 DEFSUBR (Fdatabase_last_error); | |
| 859 DEFSUBR (Fdatabase_live_p); | |
| 860 DEFSUBR (Fdatabase_file_name); | |
| 861 DEFSUBR (Fclose_database); | |
| 862 } | |
| 863 | |
| 864 void | |
| 865 vars_of_database (void) | |
| 866 { | |
| 867 #ifdef HAVE_DBM | |
| 868 Fprovide (Qdbm); | |
| 869 #endif | |
| 870 #ifdef HAVE_BERKELEY_DB | |
| 871 Fprovide (Qberkeley_db); | |
| 872 #endif | |
| 873 | |
| 874 DEFVAR_LISP ("database-coding-system", &Vdatabase_coding_system /* | |
| 771 | 875 Default coding system used to convert data in database files. |
| 428 | 876 */ ); |
| 771 | 877 Vdatabase_coding_system = Qnative; |
| 428 | 878 } |