Mercurial > hg > xemacs-beta
annotate src/database.c @ 5866:5ea790936de9
Automated merge with file:///Sources/xemacs-21.5-checked-out
| author | Aidan Kehoe <kehoea@parhasard.net> |
|---|---|
| date | Mon, 16 Mar 2015 00:11:30 +0000 |
| parents | 5d5aeb79edb4 |
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| rev | line source |
|---|---|
| 428 | 1 /* Database access routines |
| 2 Copyright (C) 1996, William M. Perry | |
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3 Copyright (C) 2001, 2002, 2005, 2010 Ben Wing. |
| 428 | 4 |
| 5 This file is part of XEmacs. | |
| 6 | |
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7 XEmacs is free software: you can redistribute it and/or modify it |
| 428 | 8 under the terms of the GNU General Public License as published by the |
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9 Free Software Foundation, either version 3 of the License, or (at your |
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10 option) any later version. |
| 428 | 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 | |
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18 along with XEmacs. If not, see <http://www.gnu.org/licenses/>. */ |
| 428 | 19 |
| 20 /* Synched up with: Not in FSF. */ | |
| 21 | |
| 22 /* Written by Bill Perry */ | |
| 23 /* Substantially rewritten by Martin Buchholz */ | |
| 24 /* db 2.x support added by Andreas Jaeger */ | |
| 771 | 25 /* Mule-ized 6-22-00 Ben Wing */ |
| 428 | 26 |
| 27 #include <config.h> | |
| 28 #include "lisp.h" | |
| 771 | 29 |
| 428 | 30 #include "sysfile.h" |
| 31 #include "buffer.h" | |
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32 #include "file-coding.h" |
| 428 | 33 |
| 34 #ifndef HAVE_DATABASE | |
| 35 #error HAVE_DATABASE not defined!! | |
| 36 #endif | |
| 37 | |
| 38 #include "database.h" /* Our include file */ | |
| 39 | |
| 40 #ifdef HAVE_BERKELEY_DB | |
| 41 /* Work around Berkeley DB's use of int types which are defined | |
| 42 slightly differently in the not quite yet standard <inttypes.h>. | |
| 43 See db.h for details of why we're resorting to this... */ | |
| 44 /* glibc 2.1 doesn't have this problem with DB 2.x */ | |
| 45 #if !(defined __GLIBC__ && __GLIBC_MINOR__ >= 1) | |
| 46 #ifdef HAVE_INTTYPES_H | |
| 3739 | 47 #ifndef __BIT_TYPES_DEFINED__ |
| 428 | 48 #define __BIT_TYPES_DEFINED__ |
| 3739 | 49 #endif |
| 428 | 50 #include <inttypes.h> |
| 3739 | 51 #if !HAVE_U_INT8_T |
| 428 | 52 typedef uint8_t u_int8_t; |
| 3739 | 53 #endif |
| 54 #if !HAVE_U_INT16_T | |
| 428 | 55 typedef uint16_t u_int16_t; |
| 3739 | 56 #endif |
| 57 #if !HAVE_U_INT32_T | |
| 428 | 58 typedef uint32_t u_int32_t; |
| 3739 | 59 #endif |
| 428 | 60 #ifdef WE_DONT_NEED_QUADS |
| 3739 | 61 #if !HAVE_U_INT64_T |
| 428 | 62 typedef uint64_t u_int64_t; |
| 3739 | 63 #endif |
| 428 | 64 #endif /* WE_DONT_NEED_QUADS */ |
| 65 #endif /* HAVE_INTTYPES_H */ | |
| 66 #endif /* !(defined __GLIBC__ && __GLIBC_MINOR__ >= 1) */ | |
| 1460 | 67 /* Berkeley DB wants __STDC__ to be defined; else if does `#define const' */ |
| 68 #if ! defined (__STDC__) && ! defined(__cplusplus) | |
| 69 #define __STDC__ 0 | |
| 70 #endif | |
| 442 | 71 #include DB_H_FILE /* Berkeley db's header file */ |
| 428 | 72 #ifndef DB_VERSION_MAJOR |
| 73 # define DB_VERSION_MAJOR 1 | |
| 74 #endif /* DB_VERSION_MAJOR */ | |
| 1141 | 75 #ifndef DB_VERSION_MINOR |
| 76 # define DB_VERSION_MINOR 0 | |
| 77 #endif /* DB_VERSION_MINOR */ | |
| 428 | 78 Lisp_Object Qberkeley_db; |
| 79 Lisp_Object Qhash, Qbtree, Qrecno, Qunknown; | |
| 448 | 80 #if DB_VERSION_MAJOR > 2 |
| 81 Lisp_Object Qqueue; | |
| 82 #endif | |
| 428 | 83 #endif /* HAVE_BERKELEY_DB */ |
| 84 | |
| 85 #ifdef HAVE_DBM | |
| 5825 | 86 BEGIN_C_DECLS |
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87 # ifdef TRUST_NDBM_H_PROTOTYPES |
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88 # include NDBM_H_FILE |
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89 # else /* not TRUST_NDBM_H_PROTOTYPES */ |
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90 |
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91 /* The prototypes in gdbm/ndbm.h currently are broken when compiling |
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92 using C++, since they are of the form `datum dbm_firstkey()', without any |
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93 args given. */ |
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94 |
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95 /* Parameters to dbm_store for simple insertion or replacement. */ |
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96 #define DBM_INSERT 0 |
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97 #define DBM_REPLACE 1 |
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98 |
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99 /* The data and key structure. This structure is defined for compatibility. */ |
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100 typedef struct |
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101 { |
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102 char *dptr; |
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103 int dsize; |
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104 } datum; |
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105 |
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106 /* The file information header. This is good enough for most applications. */ |
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107 typedef struct {int dummy[10];} DBM; |
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108 |
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109 int dbm_clearerr(DBM *); |
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110 void dbm_close(DBM *); |
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111 int dbm_delete(DBM *, datum); |
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112 int dbm_error(DBM *); |
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113 datum dbm_fetch(DBM *, datum); |
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114 datum dbm_firstkey(DBM *); |
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115 datum dbm_nextkey(DBM *); |
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116 DBM *dbm_open(const char *, int, mode_t); |
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117 int dbm_store(DBM *, datum, datum, int); |
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118 |
| 5825 | 119 # endif /* (not) TRUST_NDBM_H_PROTOTYPES */ |
| 120 END_C_DECLS | |
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121 |
| 428 | 122 Lisp_Object Qdbm; |
| 123 #endif /* HAVE_DBM */ | |
| 124 | |
| 125 Lisp_Object Vdatabase_coding_system; | |
| 126 | |
| 127 Lisp_Object Qdatabasep; | |
| 128 | |
| 129 typedef struct | |
| 130 { | |
| 131 Lisp_Object (*get_subtype) (Lisp_Database *); | |
| 132 Lisp_Object (*get_type) (Lisp_Database *); | |
| 133 Lisp_Object (*get) (Lisp_Database *, Lisp_Object); | |
| 134 int (*put) (Lisp_Database *, Lisp_Object, Lisp_Object, Lisp_Object); | |
| 135 int (*rem) (Lisp_Database *, Lisp_Object); | |
| 136 void (*map) (Lisp_Database *, Lisp_Object); | |
| 137 void (*close) (Lisp_Database *); | |
| 138 Lisp_Object (*last_error) (Lisp_Database *); | |
| 139 } DB_FUNCS; | |
| 140 | |
| 141 struct Lisp_Database | |
| 142 { | |
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143 NORMAL_LISP_OBJECT_HEADER header; |
| 428 | 144 Lisp_Object fname; |
| 145 int mode; | |
| 146 int access_; | |
| 147 int dberrno; | |
| 148 int live_p; | |
| 149 #ifdef HAVE_DBM | |
| 150 DBM *dbm_handle; | |
| 151 #endif | |
| 152 #ifdef HAVE_BERKELEY_DB | |
| 153 DB *db_handle; | |
| 154 #endif | |
| 155 DB_FUNCS *funcs; | |
| 156 Lisp_Object coding_system; | |
| 157 }; | |
| 158 | |
| 159 #define XDATABASE(x) XRECORD (x, database, Lisp_Database) | |
| 617 | 160 #define wrap_database(p) wrap_record (p, database) |
| 428 | 161 #define DATABASEP(x) RECORDP (x, database) |
| 162 #define CHECK_DATABASE(x) CHECK_RECORD (x, database) | |
| 163 #define CONCHECK_DATABASE(x) CONCHECK_RECORD (x, database) | |
| 164 #define DATABASE_LIVE_P(x) (x->live_p) | |
| 165 | |
| 166 #define CHECK_LIVE_DATABASE(db) do { \ | |
| 167 CHECK_DATABASE (db); \ | |
| 168 if (!DATABASE_LIVE_P (XDATABASE(db))) \ | |
| 563 | 169 invalid_operation ("Attempting to access closed database", db); \ |
| 428 | 170 } while (0) |
| 171 | |
| 172 | |
| 173 static Lisp_Database * | |
| 174 allocate_database (void) | |
| 175 { | |
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176 Lisp_Object obj = ALLOC_NORMAL_LISP_OBJECT (database); |
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177 Lisp_Database *db = XDATABASE (obj); |
| 428 | 178 |
| 179 db->fname = Qnil; | |
| 180 db->live_p = 0; | |
| 181 #ifdef HAVE_BERKELEY_DB | |
| 182 db->db_handle = NULL; | |
| 183 #endif | |
| 184 #ifdef HAVE_DBM | |
| 185 db->dbm_handle = NULL; | |
| 186 #endif | |
| 187 db->access_ = 0; | |
| 188 db->mode = 0; | |
| 189 db->dberrno = 0; | |
| 771 | 190 db->coding_system = Qnil; |
| 428 | 191 return db; |
| 192 } | |
| 193 | |
| 1204 | 194 static const struct memory_description database_description[] = { |
| 934 | 195 { XD_LISP_OBJECT, offsetof (struct Lisp_Database, fname) }, |
| 196 { XD_END} | |
| 197 }; | |
| 198 | |
| 428 | 199 static Lisp_Object |
| 444 | 200 mark_database (Lisp_Object object) |
| 428 | 201 { |
| 444 | 202 Lisp_Database *db = XDATABASE (object); |
| 428 | 203 return db->fname; |
| 204 } | |
| 205 | |
| 206 static void | |
| 2286 | 207 print_database (Lisp_Object obj, Lisp_Object printcharfun, |
| 208 int UNUSED (escapeflag)) | |
| 428 | 209 { |
| 210 Lisp_Database *db = XDATABASE (obj); | |
| 211 | |
| 212 if (print_readably) | |
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213 printing_unreadable_lisp_object (obj, 0); |
| 428 | 214 |
| 793 | 215 write_fmt_string_lisp (printcharfun, "#<database \"%s\" (%s/%s/", |
| 216 3, db->fname, db->funcs->get_type (db), | |
| 217 db->funcs->get_subtype (db)); | |
| 218 | |
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219 write_fmt_string (printcharfun, "%s) ", |
| 793 | 220 (!DATABASE_LIVE_P (db) ? "closed" : |
| 221 (db->access_ & O_WRONLY) ? "writeonly" : | |
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222 (db->access_ & O_RDWR) ? "readwrite" : "readonly")); |
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223 |
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224 write_fmt_string_lisp (printcharfun, "coding: %s ", 1, |
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225 XSYMBOL_NAME (XCODING_SYSTEM_NAME |
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226 (db->coding_system))); |
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227 |
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228 write_fmt_string (printcharfun, "0x%x>", LISP_OBJECT_UID (obj)); |
| 428 | 229 } |
| 230 | |
| 231 static void | |
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232 finalize_database (Lisp_Object obj) |
| 428 | 233 { |
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234 Lisp_Database *db = XDATABASE (obj); |
| 428 | 235 |
| 236 db->funcs->close (db); | |
| 237 } | |
| 238 | |
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239 DEFINE_NODUMP_LISP_OBJECT ("database", database, |
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240 mark_database, print_database, |
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241 finalize_database, 0, 0, |
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242 database_description, |
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243 Lisp_Database); |
| 428 | 244 |
| 245 DEFUN ("close-database", Fclose_database, 1, 1, 0, /* | |
| 246 Close database DATABASE. | |
| 247 */ | |
| 248 (database)) | |
| 249 { | |
| 250 Lisp_Database *db; | |
| 251 CHECK_LIVE_DATABASE (database); | |
| 252 db = XDATABASE (database); | |
| 253 db->funcs->close (db); | |
| 254 db->live_p = 0; | |
| 255 return Qnil; | |
| 256 } | |
| 257 | |
| 258 DEFUN ("database-type", Fdatabase_type, 1, 1, 0, /* | |
| 259 Return the type of database DATABASE. | |
| 260 */ | |
| 261 (database)) | |
| 262 { | |
| 263 CHECK_DATABASE (database); | |
| 264 | |
| 265 return XDATABASE (database)->funcs->get_type (XDATABASE (database)); | |
| 266 } | |
| 267 | |
| 268 DEFUN ("database-subtype", Fdatabase_subtype, 1, 1, 0, /* | |
| 269 Return the subtype of database DATABASE, if any. | |
| 270 */ | |
| 271 (database)) | |
| 272 { | |
| 273 CHECK_DATABASE (database); | |
| 274 | |
| 275 return XDATABASE (database)->funcs->get_subtype (XDATABASE (database)); | |
| 276 } | |
| 277 | |
| 278 DEFUN ("database-live-p", Fdatabase_live_p, 1, 1, 0, /* | |
| 444 | 279 Return t if OBJECT is an active database. |
| 428 | 280 */ |
| 444 | 281 (object)) |
| 428 | 282 { |
| 444 | 283 return DATABASEP (object) && DATABASE_LIVE_P (XDATABASE (object)) ? |
| 284 Qt : Qnil; | |
| 428 | 285 } |
| 286 | |
| 287 DEFUN ("database-file-name", Fdatabase_file_name, 1, 1, 0, /* | |
| 288 Return the filename associated with the database DATABASE. | |
| 289 */ | |
| 290 (database)) | |
| 291 { | |
| 292 CHECK_DATABASE (database); | |
| 293 | |
| 294 return XDATABASE (database)->fname; | |
| 295 } | |
| 296 | |
| 297 DEFUN ("databasep", Fdatabasep, 1, 1, 0, /* | |
| 444 | 298 Return t if OBJECT is a database. |
| 428 | 299 */ |
| 444 | 300 (object)) |
| 428 | 301 { |
| 444 | 302 return DATABASEP (object) ? Qt : Qnil; |
| 428 | 303 } |
| 304 | |
| 305 #ifdef HAVE_DBM | |
| 306 static void | |
| 307 dbm_map (Lisp_Database *db, Lisp_Object func) | |
| 308 { | |
| 309 datum keydatum, valdatum; | |
| 310 Lisp_Object key, val; | |
| 311 | |
| 312 for (keydatum = dbm_firstkey (db->dbm_handle); | |
| 313 keydatum.dptr != NULL; | |
| 314 keydatum = dbm_nextkey (db->dbm_handle)) | |
| 315 { | |
| 316 valdatum = dbm_fetch (db->dbm_handle, keydatum); | |
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317 key = make_extstring ((Extbyte *) keydatum.dptr, keydatum.dsize, |
| 771 | 318 db->coding_system); |
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319 val = make_extstring ((Extbyte *) valdatum.dptr, valdatum.dsize, |
| 771 | 320 db->coding_system); |
| 428 | 321 call2 (func, key, val); |
| 322 } | |
| 323 } | |
| 324 | |
| 325 static Lisp_Object | |
| 326 dbm_get (Lisp_Database *db, Lisp_Object key) | |
| 327 { | |
| 328 datum keydatum, valdatum; | |
| 329 | |
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330 LISP_STRING_TO_SIZED_EXTERNAL (key, keydatum.dptr, keydatum.dsize, |
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331 db->coding_system); |
| 428 | 332 valdatum = dbm_fetch (db->dbm_handle, keydatum); |
| 333 | |
| 334 return (valdatum.dptr | |
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335 ? make_extstring ((Extbyte *) valdatum.dptr, valdatum.dsize, |
| 771 | 336 db->coding_system) |
| 428 | 337 : Qnil); |
| 338 } | |
| 339 | |
| 340 static int | |
| 341 dbm_put (Lisp_Database *db, | |
| 342 Lisp_Object key, Lisp_Object val, Lisp_Object replace) | |
| 343 { | |
| 344 datum keydatum, valdatum; | |
| 345 | |
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346 LISP_STRING_TO_SIZED_EXTERNAL (val, valdatum.dptr, valdatum.dsize, |
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347 db->coding_system); |
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348 LISP_STRING_TO_SIZED_EXTERNAL (key, keydatum.dptr, keydatum.dsize, |
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349 db->coding_system); |
| 428 | 350 |
| 351 return !dbm_store (db->dbm_handle, keydatum, valdatum, | |
| 352 NILP (replace) ? DBM_INSERT : DBM_REPLACE); | |
| 353 } | |
| 354 | |
| 355 static int | |
| 356 dbm_remove (Lisp_Database *db, Lisp_Object key) | |
| 357 { | |
| 358 datum keydatum; | |
| 359 | |
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360 LISP_STRING_TO_SIZED_EXTERNAL (key, keydatum.dptr, keydatum.dsize, |
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361 db->coding_system); |
| 428 | 362 |
| 363 return dbm_delete (db->dbm_handle, keydatum); | |
| 364 } | |
| 365 | |
| 366 static Lisp_Object | |
| 2494 | 367 dbm_type (Lisp_Database *UNUSED (db)) |
| 428 | 368 { |
| 369 return Qdbm; | |
| 370 } | |
| 371 | |
| 372 static Lisp_Object | |
| 2494 | 373 dbm_subtype (Lisp_Database *UNUSED (db)) |
| 428 | 374 { |
| 375 return Qnil; | |
| 376 } | |
| 377 | |
| 378 static Lisp_Object | |
| 379 dbm_lasterr (Lisp_Database *db) | |
| 380 { | |
| 381 return lisp_strerror (db->dberrno); | |
| 382 } | |
| 383 | |
| 384 static void | |
| 385 dbm_closeit (Lisp_Database *db) | |
| 386 { | |
| 387 if (db->dbm_handle) | |
| 388 { | |
| 389 dbm_close (db->dbm_handle); | |
| 390 db->dbm_handle = NULL; | |
| 391 } | |
| 392 } | |
| 393 | |
| 394 static DB_FUNCS ndbm_func_block = | |
| 395 { | |
| 396 dbm_subtype, | |
| 397 dbm_type, | |
| 398 dbm_get, | |
| 399 dbm_put, | |
| 400 dbm_remove, | |
| 401 dbm_map, | |
| 402 dbm_closeit, | |
| 403 dbm_lasterr | |
| 404 }; | |
| 405 #endif /* HAVE_DBM */ | |
| 406 | |
| 407 #ifdef HAVE_BERKELEY_DB | |
| 408 static Lisp_Object | |
| 2286 | 409 berkdb_type (Lisp_Database *UNUSED (db)) |
| 428 | 410 { |
| 411 return Qberkeley_db; | |
| 412 } | |
| 413 | |
| 414 static Lisp_Object | |
| 415 berkdb_subtype (Lisp_Database *db) | |
| 416 { | |
| 417 if (!db->db_handle) | |
| 418 return Qnil; | |
| 419 | |
| 420 switch (db->db_handle->type) | |
| 421 { | |
| 422 case DB_BTREE: return Qbtree; | |
| 423 case DB_HASH: return Qhash; | |
| 424 case DB_RECNO: return Qrecno; | |
| 448 | 425 #if DB_VERSION_MAJOR > 2 |
| 426 case DB_QUEUE: return Qqueue; | |
| 427 #endif | |
| 428 | 428 default: return Qunknown; |
| 429 } | |
| 430 } | |
| 431 | |
| 432 static Lisp_Object | |
| 433 berkdb_lasterr (Lisp_Database *db) | |
| 434 { | |
| 435 return lisp_strerror (db->dberrno); | |
| 436 } | |
| 437 | |
| 438 static Lisp_Object | |
| 439 berkdb_get (Lisp_Database *db, Lisp_Object key) | |
| 440 { | |
| 441 DBT keydatum, valdatum; | |
| 442 int status = 0; | |
| 443 | |
| 444 /* DB Version 2 requires DBT's to be zeroed before use. */ | |
| 445 xzero (keydatum); | |
| 446 xzero (valdatum); | |
| 447 | |
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448 LISP_STRING_TO_SIZED_EXTERNAL (key, keydatum.data, keydatum.size, |
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449 db->coding_system); |
| 428 | 450 |
| 451 #if DB_VERSION_MAJOR == 1 | |
| 452 status = db->db_handle->get (db->db_handle, &keydatum, &valdatum, 0); | |
| 453 #else | |
| 454 status = db->db_handle->get (db->db_handle, NULL, &keydatum, &valdatum, 0); | |
| 455 #endif /* DB_VERSION_MAJOR */ | |
| 456 | |
| 457 if (!status) | |
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458 return make_extstring ((const Extbyte *) valdatum.data, valdatum.size, |
| 771 | 459 db->coding_system); |
| 428 | 460 |
| 461 #if DB_VERSION_MAJOR == 1 | |
| 462 db->dberrno = (status == 1) ? -1 : errno; | |
| 463 #else | |
| 464 db->dberrno = (status < 0) ? -1 : errno; | |
| 465 #endif /* DB_VERSION_MAJOR */ | |
| 466 | |
| 467 return Qnil; | |
| 468 } | |
| 469 | |
| 470 static int | |
| 471 berkdb_put (Lisp_Database *db, | |
| 472 Lisp_Object key, | |
| 473 Lisp_Object val, | |
| 474 Lisp_Object replace) | |
| 475 { | |
| 476 DBT keydatum, valdatum; | |
| 477 int status = 0; | |
| 478 | |
| 479 /* DB Version 2 requires DBT's to be zeroed before use. */ | |
| 480 xzero (keydatum); | |
| 481 xzero (valdatum); | |
| 482 | |
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483 LISP_STRING_TO_SIZED_EXTERNAL (key, keydatum.data, keydatum.size, |
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484 db->coding_system); |
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485 LISP_STRING_TO_SIZED_EXTERNAL (val, valdatum.data, valdatum.size, |
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486 db->coding_system); |
| 428 | 487 #if DB_VERSION_MAJOR == 1 |
| 488 status = db->db_handle->put (db->db_handle, &keydatum, &valdatum, | |
| 489 NILP (replace) ? R_NOOVERWRITE : 0); | |
| 490 db->dberrno = (status == 1) ? -1 : errno; | |
| 491 #else | |
| 492 status = db->db_handle->put (db->db_handle, NULL, &keydatum, &valdatum, | |
| 493 NILP (replace) ? DB_NOOVERWRITE : 0); | |
| 494 db->dberrno = (status < 0) ? -1 : errno; | |
| 495 #endif/* DV_VERSION_MAJOR = 2 */ | |
| 496 | |
| 497 return status; | |
| 498 } | |
| 499 | |
| 500 static int | |
| 501 berkdb_remove (Lisp_Database *db, Lisp_Object key) | |
| 502 { | |
| 503 DBT keydatum; | |
| 504 int status; | |
| 505 | |
| 506 /* DB Version 2 requires DBT's to be zeroed before use. */ | |
| 507 xzero (keydatum); | |
| 508 | |
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509 LISP_STRING_TO_SIZED_EXTERNAL (key, keydatum.data, keydatum.size, |
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510 db->coding_system); |
| 428 | 511 |
| 512 #if DB_VERSION_MAJOR == 1 | |
| 513 status = db->db_handle->del (db->db_handle, &keydatum, 0); | |
| 514 #else | |
| 515 status = db->db_handle->del (db->db_handle, NULL, &keydatum, 0); | |
| 516 #endif /* DB_VERSION_MAJOR */ | |
| 517 | |
| 518 if (!status) | |
| 519 return 0; | |
| 520 | |
| 521 #if DB_VERSION_MAJOR == 1 | |
| 522 db->dberrno = (status == 1) ? -1 : errno; | |
| 523 #else | |
| 524 db->dberrno = (status < 0) ? -1 : errno; | |
| 525 #endif /* DB_VERSION_MAJOR */ | |
| 526 | |
| 527 return 1; | |
| 528 } | |
| 529 | |
| 530 static void | |
| 531 berkdb_map (Lisp_Database *db, Lisp_Object func) | |
| 532 { | |
| 533 DBT keydatum, valdatum; | |
| 534 Lisp_Object key, val; | |
| 535 DB *dbp = db->db_handle; | |
| 536 int status; | |
| 537 | |
| 538 xzero (keydatum); | |
| 539 xzero (valdatum); | |
| 540 | |
| 541 #if DB_VERSION_MAJOR == 1 | |
| 542 for (status = dbp->seq (dbp, &keydatum, &valdatum, R_FIRST); | |
| 543 status == 0; | |
| 544 status = dbp->seq (dbp, &keydatum, &valdatum, R_NEXT)) | |
| 545 { | |
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546 key = make_extstring ((const Extbyte *) keydatum.data, keydatum.size, |
| 771 | 547 db->coding_system); |
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548 val = make_extstring ((const Extbyte *) valdatum.data, valdatum.size, |
| 771 | 549 db->coding_system); |
| 428 | 550 call2 (func, key, val); |
| 551 } | |
| 552 #else | |
| 553 { | |
| 554 DBC *dbcp; | |
| 555 | |
| 556 #if DB_VERSION_MAJOR > 2 || DB_VERSION_MINOR >=6 | |
| 557 status = dbp->cursor (dbp, NULL, &dbcp, 0); | |
| 558 #else | |
| 559 status = dbp->cursor (dbp, NULL, &dbcp); | |
| 440 | 560 #endif |
| 428 | 561 for (status = dbcp->c_get (dbcp, &keydatum, &valdatum, DB_FIRST); |
| 562 status == 0; | |
| 563 status = dbcp->c_get (dbcp, &keydatum, &valdatum, DB_NEXT)) | |
| 564 { | |
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565 key = make_extstring ((const Extbyte *) keydatum.data, keydatum.size, |
| 771 | 566 db->coding_system); |
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567 val = make_extstring ((const Extbyte *) valdatum.data, valdatum.size, |
| 771 | 568 db->coding_system); |
| 428 | 569 call2 (func, key, val); |
| 570 } | |
| 571 dbcp->c_close (dbcp); | |
| 572 } | |
| 573 #endif /* DB_VERSION_MAJOR */ | |
| 574 } | |
| 575 | |
| 576 static void | |
| 577 berkdb_close (Lisp_Database *db) | |
| 578 { | |
| 579 if (db->db_handle) | |
| 580 { | |
| 581 #if DB_VERSION_MAJOR == 1 | |
| 582 db->db_handle->sync (db->db_handle, 0); | |
| 583 db->db_handle->close (db->db_handle); | |
| 584 #else | |
| 585 db->db_handle->sync (db->db_handle, 0); | |
| 586 db->db_handle->close (db->db_handle, 0); | |
| 587 #endif /* DB_VERSION_MAJOR */ | |
| 588 db->db_handle = NULL; | |
| 589 } | |
| 590 } | |
| 591 | |
| 592 static DB_FUNCS berk_func_block = | |
| 593 { | |
| 594 berkdb_subtype, | |
| 595 berkdb_type, | |
| 596 berkdb_get, | |
| 597 berkdb_put, | |
| 598 berkdb_remove, | |
| 599 berkdb_map, | |
| 600 berkdb_close, | |
| 601 berkdb_lasterr | |
| 602 }; | |
| 603 #endif /* HAVE_BERKELEY_DB */ | |
| 604 | |
| 605 DEFUN ("database-last-error", Fdatabase_last_error, 0, 1, 0, /* | |
| 606 Return the last error associated with DATABASE. | |
| 607 */ | |
| 608 (database)) | |
| 609 { | |
| 610 if (NILP (database)) | |
| 611 return lisp_strerror (errno); | |
| 612 | |
| 613 CHECK_DATABASE (database); | |
| 614 | |
| 615 return XDATABASE (database)->funcs->last_error (XDATABASE (database)); | |
| 616 } | |
| 617 | |
| 771 | 618 DEFUN ("open-database", Fopen_database, 1, 6, 0, /* |
| 428 | 619 Return a new database object opened on FILE. |
| 620 Optional arguments TYPE and SUBTYPE specify the database type. | |
| 621 Optional argument ACCESS specifies the access rights, which may be any | |
| 622 combination of 'r' 'w' and '+', for read, write, and creation flags. | |
| 623 Optional argument MODE gives the permissions to use when opening FILE, | |
| 624 and defaults to 0755. | |
| 771 | 625 Optional argument CODESYS specifies the coding system used to encode/decode |
| 626 data passed to/from the database, and defaults to the value of the | |
| 627 variable `database-coding-system'. | |
| 428 | 628 */ |
| 771 | 629 (file, type, subtype, access_, mode, codesys)) |
| 428 | 630 { |
| 631 /* This function can GC */ | |
| 632 int modemask; | |
| 633 int accessmask = 0; | |
| 634 Lisp_Database *db = NULL; | |
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635 Extbyte *filename; |
| 428 | 636 struct gcpro gcpro1, gcpro2; |
| 637 | |
| 638 CHECK_STRING (file); | |
| 639 GCPRO2 (file, access_); | |
| 640 file = Fexpand_file_name (file, Qnil); | |
| 641 UNGCPRO; | |
| 642 | |
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643 LISP_PATHNAME_CONVERT_OUT (file, filename); |
| 428 | 644 |
| 645 if (NILP (access_)) | |
| 646 { | |
| 647 accessmask = O_RDWR | O_CREAT; | |
| 648 } | |
| 649 else | |
| 650 { | |
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651 Ibyte *acc; |
| 428 | 652 CHECK_STRING (access_); |
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653 acc = XSTRING_DATA (access_); |
| 428 | 654 |
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655 if (qxestrchr (acc, '+')) |
| 428 | 656 accessmask |= O_CREAT; |
| 657 | |
| 658 { | |
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659 int rp = !!qxestrchr (acc, 'r'); |
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660 int wp = !!qxestrchr (acc, 'w'); |
| 428 | 661 if (rp && wp) accessmask |= O_RDWR; |
| 662 else if (wp) accessmask |= O_WRONLY; | |
| 663 else accessmask |= O_RDONLY; | |
| 664 } | |
| 665 } | |
| 666 | |
| 667 if (NILP (mode)) | |
| 668 { | |
| 669 modemask = 0755; /* rwxr-xr-x */ | |
| 670 } | |
| 671 else | |
| 672 { | |
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673 CHECK_FIXNUM (mode); |
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674 modemask = XFIXNUM (mode); |
| 428 | 675 } |
| 676 | |
| 771 | 677 if (NILP (codesys)) |
| 678 codesys = Vdatabase_coding_system; | |
| 679 | |
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680 codesys = get_coding_system_for_text_file (codesys, 0); |
| 771 | 681 |
| 428 | 682 #ifdef HAVE_DBM |
| 683 if (NILP (type) || EQ (type, Qdbm)) | |
| 684 { | |
| 685 DBM *dbase = dbm_open (filename, accessmask, modemask); | |
| 686 if (!dbase) | |
| 687 return Qnil; | |
| 688 | |
| 689 db = allocate_database (); | |
| 690 db->dbm_handle = dbase; | |
| 691 db->funcs = &ndbm_func_block; | |
| 771 | 692 db->coding_system = codesys; |
| 428 | 693 goto db_done; |
| 694 } | |
| 695 #endif /* HAVE_DBM */ | |
| 696 | |
| 697 #ifdef HAVE_BERKELEY_DB | |
| 698 if (NILP (type) || EQ (type, Qberkeley_db)) | |
| 699 { | |
| 700 DBTYPE real_subtype; | |
| 701 DB *dbase; | |
| 702 #if DB_VERSION_MAJOR != 1 | |
| 703 int status; | |
| 704 #endif | |
| 705 | |
| 706 if (EQ (subtype, Qhash) || NILP (subtype)) | |
| 707 real_subtype = DB_HASH; | |
| 708 else if (EQ (subtype, Qbtree)) | |
| 709 real_subtype = DB_BTREE; | |
| 710 else if (EQ (subtype, Qrecno)) | |
| 711 real_subtype = DB_RECNO; | |
| 448 | 712 #if DB_VERSION_MAJOR > 2 |
| 713 else if (EQ (subtype, Qqueue)) | |
| 714 real_subtype = DB_QUEUE; | |
| 715 #endif | |
| 428 | 716 else |
| 563 | 717 invalid_constant ("Unsupported subtype", subtype); |
| 428 | 718 |
| 719 #if DB_VERSION_MAJOR == 1 | |
| 720 dbase = dbopen (filename, accessmask, modemask, real_subtype, NULL); | |
| 721 if (!dbase) | |
| 722 return Qnil; | |
| 723 #else | |
| 724 /* Berkeley DB Version 2 has only the accessmask DB_CREATE and DB_RDONLY, | |
| 725 other flags shouldn't be set */ | |
| 726 if (NILP (access_)) | |
| 727 accessmask = DB_CREATE; | |
| 728 else | |
| 729 { | |
| 730 char *acc; | |
| 731 CHECK_STRING (access_); | |
| 732 acc = (char *) XSTRING_DATA (access_); | |
| 733 accessmask = 0; | |
| 734 | |
| 735 if (strchr (acc, '+')) | |
| 736 accessmask |= DB_CREATE; | |
| 737 | |
| 738 if (strchr (acc, 'r') && !strchr (acc, 'w')) | |
| 739 accessmask |= DB_RDONLY; | |
| 740 } | |
| 448 | 741 #if DB_VERSION_MAJOR == 2 |
| 428 | 742 status = db_open (filename, real_subtype, accessmask, |
| 743 modemask, NULL , NULL, &dbase); | |
| 744 if (status) | |
| 745 return Qnil; | |
| 448 | 746 #else |
| 747 status = db_create (&dbase, NULL, 0); | |
| 748 if (status) | |
| 749 return Qnil; | |
| 1141 | 750 #if DB_VERSION_MAJOR < 4 || (DB_VERSION_MAJOR == 4 && DB_VERSION_MINOR < 1) |
| 448 | 751 status = dbase->open (dbase, filename, NULL, |
| 752 real_subtype, accessmask, modemask); | |
| 1141 | 753 #else /* DB_VERSION >= 4.1 */ |
| 1377 | 754 /* You can't use DB_AUTO_COMMIT unless you have a txn environment. */ |
| 1141 | 755 status = dbase->open (dbase, NULL, filename, NULL, real_subtype, |
| 1377 | 756 accessmask, modemask); |
| 1141 | 757 #endif /* DB_VERSION < 4.1 */ |
| 448 | 758 if (status) |
| 759 { | |
| 760 dbase->close (dbase, 0); | |
| 761 return Qnil; | |
| 762 } | |
| 763 #endif /* DB_VERSION_MAJOR > 2 */ | |
| 764 /* Normalize into system specific file modes. Only for printing */ | |
| 765 accessmask = accessmask & DB_RDONLY ? O_RDONLY : O_RDWR; | |
| 428 | 766 #endif /* DB_VERSION_MAJOR */ |
| 767 | |
| 768 db = allocate_database (); | |
| 769 db->db_handle = dbase; | |
| 770 db->funcs = &berk_func_block; | |
| 771 | 771 db->coding_system = codesys; |
| 428 | 772 goto db_done; |
| 773 } | |
| 774 #endif /* HAVE_BERKELEY_DB */ | |
| 775 | |
| 563 | 776 invalid_constant ("Unsupported database type", type); |
| 428 | 777 return Qnil; |
| 778 | |
| 779 db_done: | |
| 780 db->live_p = 1; | |
| 781 db->fname = file; | |
| 782 db->mode = modemask; | |
| 783 db->access_ = accessmask; | |
| 784 | |
| 793 | 785 return wrap_database (db); |
| 428 | 786 } |
| 787 | |
| 788 DEFUN ("put-database", Fput_database, 3, 4, 0, /* | |
| 789 Store KEY and VALUE in DATABASE. | |
| 790 If optional fourth arg REPLACE is non-nil, | |
| 791 replace any existing entry in the database. | |
| 792 */ | |
| 793 (key, value, database, replace)) | |
| 794 { | |
| 795 CHECK_LIVE_DATABASE (database); | |
| 796 CHECK_STRING (key); | |
| 797 CHECK_STRING (value); | |
| 798 { | |
| 799 Lisp_Database *db = XDATABASE (database); | |
| 800 int status = db->funcs->put (db, key, value, replace); | |
| 801 return status ? Qt : Qnil; | |
| 802 } | |
| 803 } | |
| 804 | |
| 805 DEFUN ("remove-database", Fremove_database, 2, 2, 0, /* | |
| 806 Remove KEY from DATABASE. | |
| 807 */ | |
| 808 (key, database)) | |
| 809 { | |
| 810 CHECK_LIVE_DATABASE (database); | |
| 811 CHECK_STRING (key); | |
| 812 { | |
| 813 Lisp_Database *db = XDATABASE (database); | |
| 814 int status = db->funcs->rem (db, key); | |
| 815 return status ? Qt : Qnil; | |
| 816 } | |
| 817 } | |
| 818 | |
| 819 DEFUN ("get-database", Fget_database, 2, 3, 0, /* | |
| 820 Return value for KEY in DATABASE. | |
| 821 If there is no corresponding value, return DEFAULT (defaults to nil). | |
| 822 */ | |
| 823 (key, database, default_)) | |
| 824 { | |
| 825 CHECK_LIVE_DATABASE (database); | |
| 826 CHECK_STRING (key); | |
| 827 { | |
| 828 Lisp_Database *db = XDATABASE (database); | |
| 829 Lisp_Object retval = db->funcs->get (db, key); | |
| 830 return NILP (retval) ? default_ : retval; | |
| 831 } | |
| 832 } | |
| 833 | |
| 834 DEFUN ("map-database", Fmapdatabase, 2, 2, 0, /* | |
| 835 Map FUNCTION over entries in DATABASE, calling it with two args, | |
| 836 each key and value in the database. | |
| 837 */ | |
| 838 (function, database)) | |
| 839 { | |
| 840 CHECK_LIVE_DATABASE (database); | |
| 841 | |
| 842 XDATABASE (database)->funcs->map (XDATABASE (database), function); | |
| 843 | |
| 844 return Qnil; | |
| 845 } | |
| 846 | |
| 847 void | |
| 848 syms_of_database (void) | |
| 849 { | |
|
5117
3742ea8250b5
Checking in final CVS version of workspace 'ben-lisp-object'
Ben Wing <ben@xemacs.org>
parents:
3072
diff
changeset
|
850 INIT_LISP_OBJECT (database); |
| 442 | 851 |
| 563 | 852 DEFSYMBOL (Qdatabasep); |
| 428 | 853 #ifdef HAVE_DBM |
| 563 | 854 DEFSYMBOL (Qdbm); |
| 428 | 855 #endif |
| 856 #ifdef HAVE_BERKELEY_DB | |
| 563 | 857 DEFSYMBOL (Qberkeley_db); |
| 858 DEFSYMBOL (Qhash); | |
| 859 DEFSYMBOL (Qbtree); | |
| 860 DEFSYMBOL (Qrecno); | |
| 448 | 861 #if DB_VERSION_MAJOR > 2 |
| 563 | 862 DEFSYMBOL (Qqueue); |
| 448 | 863 #endif |
| 563 | 864 DEFSYMBOL (Qunknown); |
| 428 | 865 #endif |
| 866 | |
| 867 DEFSUBR (Fopen_database); | |
| 868 DEFSUBR (Fdatabasep); | |
| 869 DEFSUBR (Fmapdatabase); | |
| 870 DEFSUBR (Fput_database); | |
| 871 DEFSUBR (Fget_database); | |
| 872 DEFSUBR (Fremove_database); | |
| 873 DEFSUBR (Fdatabase_type); | |
| 874 DEFSUBR (Fdatabase_subtype); | |
| 875 DEFSUBR (Fdatabase_last_error); | |
| 876 DEFSUBR (Fdatabase_live_p); | |
| 877 DEFSUBR (Fdatabase_file_name); | |
| 878 DEFSUBR (Fclose_database); | |
| 879 } | |
| 880 | |
| 881 void | |
| 882 vars_of_database (void) | |
| 883 { | |
| 884 #ifdef HAVE_DBM | |
| 885 Fprovide (Qdbm); | |
| 886 #endif | |
| 887 #ifdef HAVE_BERKELEY_DB | |
| 888 Fprovide (Qberkeley_db); | |
| 889 #endif | |
| 890 | |
| 891 DEFVAR_LISP ("database-coding-system", &Vdatabase_coding_system /* | |
| 771 | 892 Default coding system used to convert data in database files. |
| 428 | 893 */ ); |
| 771 | 894 Vdatabase_coding_system = Qnative; |
| 428 | 895 } |