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428
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1 /* Database access routines
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2 Copyright (C) 1996, William M. Perry
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793
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3 Copyright (C) 2001, 2002 Ben Wing.
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428
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4
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5 This file is part of XEmacs.
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6
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7 XEmacs is free software; you can redistribute it and/or modify it
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8 under the terms of the GNU General Public License as published by the
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9 Free Software Foundation; either version 2, or (at your option) any
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10 later version.
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11
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12 XEmacs is distributed in the hope that it will be useful, but WITHOUT
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13 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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14 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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15 for more details.
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16
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17 You should have received a copy of the GNU General Public License
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18 along with XEmacs; see the file COPYING. If not, write to
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19 the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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20 Boston, MA 02111-1307, USA. */
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21
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22 /* Synched up with: Not in FSF. */
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23
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24 /* Written by Bill Perry */
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25 /* Substantially rewritten by Martin Buchholz */
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26 /* db 2.x support added by Andreas Jaeger */
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771
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27 /* Mule-ized 6-22-00 Ben Wing */
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428
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28
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29 #include <config.h>
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30 #include "lisp.h"
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771
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31
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428
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32 #include "sysfile.h"
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33 #include "buffer.h"
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34
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35 #ifndef HAVE_DATABASE
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36 #error HAVE_DATABASE not defined!!
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37 #endif
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38
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39 #include "database.h" /* Our include file */
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40
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41 #ifdef HAVE_BERKELEY_DB
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42 /* Work around Berkeley DB's use of int types which are defined
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43 slightly differently in the not quite yet standard <inttypes.h>.
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44 See db.h for details of why we're resorting to this... */
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45 /* glibc 2.1 doesn't have this problem with DB 2.x */
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46 #if !(defined __GLIBC__ && __GLIBC_MINOR__ >= 1)
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47 #ifdef HAVE_INTTYPES_H
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48 #define __BIT_TYPES_DEFINED__
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49 #include <inttypes.h>
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1453
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50 #ifndef __FreeBSD__
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428
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51 typedef uint8_t u_int8_t;
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52 typedef uint16_t u_int16_t;
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53 typedef uint32_t u_int32_t;
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54 #ifdef WE_DONT_NEED_QUADS
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55 typedef uint64_t u_int64_t;
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56 #endif /* WE_DONT_NEED_QUADS */
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1453
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57 #endif /* __FreeBSD__ */
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428
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58 #endif /* HAVE_INTTYPES_H */
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59 #endif /* !(defined __GLIBC__ && __GLIBC_MINOR__ >= 1) */
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442
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60 #include DB_H_FILE /* Berkeley db's header file */
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428
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61 #ifndef DB_VERSION_MAJOR
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62 # define DB_VERSION_MAJOR 1
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63 #endif /* DB_VERSION_MAJOR */
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1141
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64 #ifndef DB_VERSION_MINOR
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65 # define DB_VERSION_MINOR 0
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66 #endif /* DB_VERSION_MINOR */
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428
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67 Lisp_Object Qberkeley_db;
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68 Lisp_Object Qhash, Qbtree, Qrecno, Qunknown;
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448
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69 #if DB_VERSION_MAJOR > 2
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70 Lisp_Object Qqueue;
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71 #endif
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428
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72 #endif /* HAVE_BERKELEY_DB */
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73
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74 #ifdef HAVE_DBM
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75 #include <ndbm.h>
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76 Lisp_Object Qdbm;
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77 #endif /* HAVE_DBM */
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78
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79 Lisp_Object Vdatabase_coding_system;
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80
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81 Lisp_Object Qdatabasep;
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82
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83 typedef struct
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84 {
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85 Lisp_Object (*get_subtype) (Lisp_Database *);
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86 Lisp_Object (*get_type) (Lisp_Database *);
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87 Lisp_Object (*get) (Lisp_Database *, Lisp_Object);
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88 int (*put) (Lisp_Database *, Lisp_Object, Lisp_Object, Lisp_Object);
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89 int (*rem) (Lisp_Database *, Lisp_Object);
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90 void (*map) (Lisp_Database *, Lisp_Object);
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91 void (*close) (Lisp_Database *);
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92 Lisp_Object (*last_error) (Lisp_Database *);
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93 } DB_FUNCS;
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94
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95 struct Lisp_Database
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96 {
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97 struct lcrecord_header header;
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98 Lisp_Object fname;
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99 int mode;
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100 int access_;
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101 int dberrno;
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102 int live_p;
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103 #ifdef HAVE_DBM
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104 DBM *dbm_handle;
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105 #endif
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106 #ifdef HAVE_BERKELEY_DB
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107 DB *db_handle;
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108 #endif
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109 DB_FUNCS *funcs;
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110 Lisp_Object coding_system;
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111 };
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112
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113 #define XDATABASE(x) XRECORD (x, database, Lisp_Database)
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617
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114 #define wrap_database(p) wrap_record (p, database)
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428
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115 #define DATABASEP(x) RECORDP (x, database)
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116 #define CHECK_DATABASE(x) CHECK_RECORD (x, database)
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117 #define CONCHECK_DATABASE(x) CONCHECK_RECORD (x, database)
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118 #define DATABASE_LIVE_P(x) (x->live_p)
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119
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120 #define CHECK_LIVE_DATABASE(db) do { \
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121 CHECK_DATABASE (db); \
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122 if (!DATABASE_LIVE_P (XDATABASE(db))) \
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563
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123 invalid_operation ("Attempting to access closed database", db); \
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428
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124 } while (0)
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125
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126
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127 static Lisp_Database *
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128 allocate_database (void)
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129 {
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130 Lisp_Database *db = alloc_lcrecord_type (Lisp_Database, &lrecord_database);
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131
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132 db->fname = Qnil;
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133 db->live_p = 0;
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134 #ifdef HAVE_BERKELEY_DB
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135 db->db_handle = NULL;
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136 #endif
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137 #ifdef HAVE_DBM
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138 db->dbm_handle = NULL;
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139 #endif
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140 db->access_ = 0;
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141 db->mode = 0;
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142 db->dberrno = 0;
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771
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143 db->coding_system = Qnil;
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428
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144 return db;
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145 }
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146
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1204
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147 static const struct memory_description database_description[] = {
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934
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148 { XD_LISP_OBJECT, offsetof (struct Lisp_Database, fname) },
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149 { XD_END}
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150 };
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151
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428
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152 static Lisp_Object
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444
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153 mark_database (Lisp_Object object)
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428
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154 {
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444
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155 Lisp_Database *db = XDATABASE (object);
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428
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156 return db->fname;
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157 }
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158
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159 static void
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160 print_database (Lisp_Object obj, Lisp_Object printcharfun, int escapeflag)
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161 {
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162 Lisp_Database *db = XDATABASE (obj);
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163
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164 if (print_readably)
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563
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165 printing_unreadable_object ("#<database 0x%x>", db->header.uid);
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428
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166
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793
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167 write_fmt_string_lisp (printcharfun, "#<database \"%s\" (%s/%s/",
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168 3, db->fname, db->funcs->get_type (db),
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169 db->funcs->get_subtype (db));
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170
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171 write_fmt_string (printcharfun, "%s) 0x%x>",
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172 (!DATABASE_LIVE_P (db) ? "closed" :
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173 (db->access_ & O_WRONLY) ? "writeonly" :
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174 (db->access_ & O_RDWR) ? "readwrite" : "readonly"),
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175 db->header.uid);
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428
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176 }
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177
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178 static void
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179 finalize_database (void *header, int for_disksave)
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180 {
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181 Lisp_Database *db = (Lisp_Database *) header;
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182
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183 if (for_disksave)
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184 {
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563
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185 invalid_operation
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793
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186 ("Can't dump an emacs containing database objects",
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187 wrap_database (db));
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428
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188 }
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189 db->funcs->close (db);
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190 }
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191
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934
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192 DEFINE_LRECORD_IMPLEMENTATION ("database", database,
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193 0, /*dumpable-flag*/
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194 mark_database, print_database,
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195 finalize_database, 0, 0,
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196 database_description,
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197 Lisp_Database);
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428
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198
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199 DEFUN ("close-database", Fclose_database, 1, 1, 0, /*
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200 Close database DATABASE.
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201 */
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202 (database))
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203 {
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204 Lisp_Database *db;
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205 CHECK_LIVE_DATABASE (database);
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206 db = XDATABASE (database);
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207 db->funcs->close (db);
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208 db->live_p = 0;
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209 return Qnil;
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210 }
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211
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212 DEFUN ("database-type", Fdatabase_type, 1, 1, 0, /*
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213 Return the type of database DATABASE.
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214 */
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215 (database))
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216 {
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217 CHECK_DATABASE (database);
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218
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219 return XDATABASE (database)->funcs->get_type (XDATABASE (database));
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220 }
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221
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222 DEFUN ("database-subtype", Fdatabase_subtype, 1, 1, 0, /*
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223 Return the subtype of database DATABASE, if any.
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224 */
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225 (database))
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226 {
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227 CHECK_DATABASE (database);
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228
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229 return XDATABASE (database)->funcs->get_subtype (XDATABASE (database));
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230 }
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231
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232 DEFUN ("database-live-p", Fdatabase_live_p, 1, 1, 0, /*
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444
|
233 Return t if OBJECT is an active database.
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428
|
234 */
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444
|
235 (object))
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428
|
236 {
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444
|
237 return DATABASEP (object) && DATABASE_LIVE_P (XDATABASE (object)) ?
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238 Qt : Qnil;
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428
|
239 }
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240
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241 DEFUN ("database-file-name", Fdatabase_file_name, 1, 1, 0, /*
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242 Return the filename associated with the database DATABASE.
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243 */
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244 (database))
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245 {
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246 CHECK_DATABASE (database);
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247
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248 return XDATABASE (database)->fname;
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249 }
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250
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251 DEFUN ("databasep", Fdatabasep, 1, 1, 0, /*
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444
|
252 Return t if OBJECT is a database.
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|
428
|
253 */
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444
|
254 (object))
|
|
428
|
255 {
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|
444
|
256 return DATABASEP (object) ? Qt : Qnil;
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428
|
257 }
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258
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|
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259 #ifdef HAVE_DBM
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260 static void
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261 dbm_map (Lisp_Database *db, Lisp_Object func)
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262 {
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263 datum keydatum, valdatum;
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264 Lisp_Object key, val;
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265
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266 for (keydatum = dbm_firstkey (db->dbm_handle);
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267 keydatum.dptr != NULL;
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268 keydatum = dbm_nextkey (db->dbm_handle))
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269 {
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270 valdatum = dbm_fetch (db->dbm_handle, keydatum);
|
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771
|
271 key = make_ext_string (keydatum.dptr, keydatum.dsize,
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272 db->coding_system);
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273 val = make_ext_string (valdatum.dptr, valdatum.dsize,
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274 db->coding_system);
|
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428
|
275 call2 (func, key, val);
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276 }
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277 }
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278
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279 static Lisp_Object
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280 dbm_get (Lisp_Database *db, Lisp_Object key)
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|
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281 {
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282 datum keydatum, valdatum;
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283
|
|
771
|
284 TO_EXTERNAL_FORMAT (LISP_STRING, key,
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285 ALLOCA, (keydatum.dptr, keydatum.dsize),
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286 db->coding_system);
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428
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287 valdatum = dbm_fetch (db->dbm_handle, keydatum);
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288
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289 return (valdatum.dptr
|
|
771
|
290 ? make_ext_string (valdatum.dptr, valdatum.dsize,
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291 db->coding_system)
|
|
428
|
292 : Qnil);
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|
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293 }
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|
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294
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295 static int
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296 dbm_put (Lisp_Database *db,
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297 Lisp_Object key, Lisp_Object val, Lisp_Object replace)
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|
|
298 {
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299 datum keydatum, valdatum;
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300
|
|
771
|
301 TO_EXTERNAL_FORMAT (LISP_STRING, val,
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302 ALLOCA, (valdatum.dptr, valdatum.dsize),
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303 db->coding_system);
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304 TO_EXTERNAL_FORMAT (LISP_STRING, key,
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305 ALLOCA, (keydatum.dptr, keydatum.dsize),
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306 db->coding_system);
|
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428
|
307
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|
|
308 return !dbm_store (db->dbm_handle, keydatum, valdatum,
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309 NILP (replace) ? DBM_INSERT : DBM_REPLACE);
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|
|
310 }
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|
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311
|
|
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312 static int
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313 dbm_remove (Lisp_Database *db, Lisp_Object key)
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|
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314 {
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|
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315 datum keydatum;
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|
|
316
|
|
771
|
317 TO_EXTERNAL_FORMAT (LISP_STRING, key,
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|
|
318 ALLOCA, (keydatum.dptr, keydatum.dsize),
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|
|
319 db->coding_system);
|
|
428
|
320
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|
|
321 return dbm_delete (db->dbm_handle, keydatum);
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|
|
322 }
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323
|
|
|
324 static Lisp_Object
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|
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325 dbm_type (Lisp_Database *db)
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|
|
326 {
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|
|
327 return Qdbm;
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|
|
328 }
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|
|
329
|
|
|
330 static Lisp_Object
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|
|
331 dbm_subtype (Lisp_Database *db)
|
|
|
332 {
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|
|
333 return Qnil;
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|
|
334 }
|
|
|
335
|
|
|
336 static Lisp_Object
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|
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337 dbm_lasterr (Lisp_Database *db)
|
|
|
338 {
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|
|
339 return lisp_strerror (db->dberrno);
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|
|
340 }
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|
|
341
|
|
|
342 static void
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|
|
343 dbm_closeit (Lisp_Database *db)
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|
|
344 {
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|
|
345 if (db->dbm_handle)
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|
|
346 {
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|
|
347 dbm_close (db->dbm_handle);
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|
|
348 db->dbm_handle = NULL;
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|
|
349 }
|
|
|
350 }
|
|
|
351
|
|
|
352 static DB_FUNCS ndbm_func_block =
|
|
|
353 {
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|
|
354 dbm_subtype,
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|
|
355 dbm_type,
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|
|
356 dbm_get,
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|
|
357 dbm_put,
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|
|
358 dbm_remove,
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|
|
359 dbm_map,
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|
|
360 dbm_closeit,
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|
|
361 dbm_lasterr
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|
|
362 };
|
|
|
363 #endif /* HAVE_DBM */
|
|
|
364
|
|
|
365 #ifdef HAVE_BERKELEY_DB
|
|
|
366 static Lisp_Object
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|
|
367 berkdb_type (Lisp_Database *db)
|
|
|
368 {
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|
|
369 return Qberkeley_db;
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|
|
370 }
|
|
|
371
|
|
|
372 static Lisp_Object
|
|
|
373 berkdb_subtype (Lisp_Database *db)
|
|
|
374 {
|
|
|
375 if (!db->db_handle)
|
|
|
376 return Qnil;
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|
|
377
|
|
|
378 switch (db->db_handle->type)
|
|
|
379 {
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|
|
380 case DB_BTREE: return Qbtree;
|
|
|
381 case DB_HASH: return Qhash;
|
|
|
382 case DB_RECNO: return Qrecno;
|
|
448
|
383 #if DB_VERSION_MAJOR > 2
|
|
|
384 case DB_QUEUE: return Qqueue;
|
|
|
385 #endif
|
|
428
|
386 default: return Qunknown;
|
|
|
387 }
|
|
|
388 }
|
|
|
389
|
|
|
390 static Lisp_Object
|
|
|
391 berkdb_lasterr (Lisp_Database *db)
|
|
|
392 {
|
|
|
393 return lisp_strerror (db->dberrno);
|
|
|
394 }
|
|
|
395
|
|
|
396 static Lisp_Object
|
|
|
397 berkdb_get (Lisp_Database *db, Lisp_Object key)
|
|
|
398 {
|
|
|
399 DBT keydatum, valdatum;
|
|
|
400 int status = 0;
|
|
|
401
|
|
|
402 /* DB Version 2 requires DBT's to be zeroed before use. */
|
|
|
403 xzero (keydatum);
|
|
|
404 xzero (valdatum);
|
|
|
405
|
|
771
|
406 TO_EXTERNAL_FORMAT (LISP_STRING, key,
|
|
|
407 ALLOCA, (keydatum.data, keydatum.size),
|
|
|
408 db->coding_system);
|
|
428
|
409
|
|
|
410 #if DB_VERSION_MAJOR == 1
|
|
|
411 status = db->db_handle->get (db->db_handle, &keydatum, &valdatum, 0);
|
|
|
412 #else
|
|
|
413 status = db->db_handle->get (db->db_handle, NULL, &keydatum, &valdatum, 0);
|
|
|
414 #endif /* DB_VERSION_MAJOR */
|
|
|
415
|
|
|
416 if (!status)
|
|
771
|
417 return make_ext_string (valdatum.data, valdatum.size,
|
|
|
418 db->coding_system);
|
|
428
|
419
|
|
|
420 #if DB_VERSION_MAJOR == 1
|
|
|
421 db->dberrno = (status == 1) ? -1 : errno;
|
|
|
422 #else
|
|
|
423 db->dberrno = (status < 0) ? -1 : errno;
|
|
|
424 #endif /* DB_VERSION_MAJOR */
|
|
|
425
|
|
|
426 return Qnil;
|
|
|
427 }
|
|
|
428
|
|
|
429 static int
|
|
|
430 berkdb_put (Lisp_Database *db,
|
|
|
431 Lisp_Object key,
|
|
|
432 Lisp_Object val,
|
|
|
433 Lisp_Object replace)
|
|
|
434 {
|
|
|
435 DBT keydatum, valdatum;
|
|
|
436 int status = 0;
|
|
|
437
|
|
|
438 /* DB Version 2 requires DBT's to be zeroed before use. */
|
|
|
439 xzero (keydatum);
|
|
|
440 xzero (valdatum);
|
|
|
441
|
|
771
|
442 TO_EXTERNAL_FORMAT (LISP_STRING, key,
|
|
|
443 ALLOCA, (keydatum.data, keydatum.size),
|
|
|
444 db->coding_system);
|
|
|
445 TO_EXTERNAL_FORMAT (LISP_STRING, val,
|
|
|
446 ALLOCA, (valdatum.data, valdatum.size),
|
|
|
447 db->coding_system);
|
|
428
|
448 #if DB_VERSION_MAJOR == 1
|
|
|
449 status = db->db_handle->put (db->db_handle, &keydatum, &valdatum,
|
|
|
450 NILP (replace) ? R_NOOVERWRITE : 0);
|
|
|
451 db->dberrno = (status == 1) ? -1 : errno;
|
|
|
452 #else
|
|
|
453 status = db->db_handle->put (db->db_handle, NULL, &keydatum, &valdatum,
|
|
|
454 NILP (replace) ? DB_NOOVERWRITE : 0);
|
|
|
455 db->dberrno = (status < 0) ? -1 : errno;
|
|
|
456 #endif/* DV_VERSION_MAJOR = 2 */
|
|
|
457
|
|
|
458 return status;
|
|
|
459 }
|
|
|
460
|
|
|
461 static int
|
|
|
462 berkdb_remove (Lisp_Database *db, Lisp_Object key)
|
|
|
463 {
|
|
|
464 DBT keydatum;
|
|
|
465 int status;
|
|
|
466
|
|
|
467 /* DB Version 2 requires DBT's to be zeroed before use. */
|
|
|
468 xzero (keydatum);
|
|
|
469
|
|
771
|
470 TO_EXTERNAL_FORMAT (LISP_STRING, key,
|
|
|
471 ALLOCA, (keydatum.data, keydatum.size),
|
|
|
472 db->coding_system);
|
|
428
|
473
|
|
|
474 #if DB_VERSION_MAJOR == 1
|
|
|
475 status = db->db_handle->del (db->db_handle, &keydatum, 0);
|
|
|
476 #else
|
|
|
477 status = db->db_handle->del (db->db_handle, NULL, &keydatum, 0);
|
|
|
478 #endif /* DB_VERSION_MAJOR */
|
|
|
479
|
|
|
480 if (!status)
|
|
|
481 return 0;
|
|
|
482
|
|
|
483 #if DB_VERSION_MAJOR == 1
|
|
|
484 db->dberrno = (status == 1) ? -1 : errno;
|
|
|
485 #else
|
|
|
486 db->dberrno = (status < 0) ? -1 : errno;
|
|
|
487 #endif /* DB_VERSION_MAJOR */
|
|
|
488
|
|
|
489 return 1;
|
|
|
490 }
|
|
|
491
|
|
|
492 static void
|
|
|
493 berkdb_map (Lisp_Database *db, Lisp_Object func)
|
|
|
494 {
|
|
|
495 DBT keydatum, valdatum;
|
|
|
496 Lisp_Object key, val;
|
|
|
497 DB *dbp = db->db_handle;
|
|
|
498 int status;
|
|
|
499
|
|
|
500 xzero (keydatum);
|
|
|
501 xzero (valdatum);
|
|
|
502
|
|
|
503 #if DB_VERSION_MAJOR == 1
|
|
|
504 for (status = dbp->seq (dbp, &keydatum, &valdatum, R_FIRST);
|
|
|
505 status == 0;
|
|
|
506 status = dbp->seq (dbp, &keydatum, &valdatum, R_NEXT))
|
|
|
507 {
|
|
771
|
508 key = make_ext_string (keydatum.data, keydatum.size,
|
|
|
509 db->coding_system);
|
|
|
510 val = make_ext_string (valdatum.data, valdatum.size,
|
|
|
511 db->coding_system);
|
|
428
|
512 call2 (func, key, val);
|
|
|
513 }
|
|
|
514 #else
|
|
|
515 {
|
|
|
516 DBC *dbcp;
|
|
|
517
|
|
|
518 #if DB_VERSION_MAJOR > 2 || DB_VERSION_MINOR >=6
|
|
|
519 status = dbp->cursor (dbp, NULL, &dbcp, 0);
|
|
|
520 #else
|
|
|
521 status = dbp->cursor (dbp, NULL, &dbcp);
|
|
440
|
522 #endif
|
|
428
|
523 for (status = dbcp->c_get (dbcp, &keydatum, &valdatum, DB_FIRST);
|
|
|
524 status == 0;
|
|
|
525 status = dbcp->c_get (dbcp, &keydatum, &valdatum, DB_NEXT))
|
|
|
526 {
|
|
771
|
527 key = make_ext_string (keydatum.data, keydatum.size,
|
|
|
528 db->coding_system);
|
|
|
529 val = make_ext_string (valdatum.data, valdatum.size,
|
|
|
530 db->coding_system);
|
|
428
|
531 call2 (func, key, val);
|
|
|
532 }
|
|
|
533 dbcp->c_close (dbcp);
|
|
|
534 }
|
|
|
535 #endif /* DB_VERSION_MAJOR */
|
|
|
536 }
|
|
|
537
|
|
|
538 static void
|
|
|
539 berkdb_close (Lisp_Database *db)
|
|
|
540 {
|
|
|
541 if (db->db_handle)
|
|
|
542 {
|
|
|
543 #if DB_VERSION_MAJOR == 1
|
|
|
544 db->db_handle->sync (db->db_handle, 0);
|
|
|
545 db->db_handle->close (db->db_handle);
|
|
|
546 #else
|
|
|
547 db->db_handle->sync (db->db_handle, 0);
|
|
|
548 db->db_handle->close (db->db_handle, 0);
|
|
|
549 #endif /* DB_VERSION_MAJOR */
|
|
|
550 db->db_handle = NULL;
|
|
|
551 }
|
|
|
552 }
|
|
|
553
|
|
|
554 static DB_FUNCS berk_func_block =
|
|
|
555 {
|
|
|
556 berkdb_subtype,
|
|
|
557 berkdb_type,
|
|
|
558 berkdb_get,
|
|
|
559 berkdb_put,
|
|
|
560 berkdb_remove,
|
|
|
561 berkdb_map,
|
|
|
562 berkdb_close,
|
|
|
563 berkdb_lasterr
|
|
|
564 };
|
|
|
565 #endif /* HAVE_BERKELEY_DB */
|
|
|
566
|
|
|
567 DEFUN ("database-last-error", Fdatabase_last_error, 0, 1, 0, /*
|
|
|
568 Return the last error associated with DATABASE.
|
|
|
569 */
|
|
|
570 (database))
|
|
|
571 {
|
|
|
572 if (NILP (database))
|
|
|
573 return lisp_strerror (errno);
|
|
|
574
|
|
|
575 CHECK_DATABASE (database);
|
|
|
576
|
|
|
577 return XDATABASE (database)->funcs->last_error (XDATABASE (database));
|
|
|
578 }
|
|
|
579
|
|
771
|
580 DEFUN ("open-database", Fopen_database, 1, 6, 0, /*
|
|
428
|
581 Return a new database object opened on FILE.
|
|
|
582 Optional arguments TYPE and SUBTYPE specify the database type.
|
|
|
583 Optional argument ACCESS specifies the access rights, which may be any
|
|
|
584 combination of 'r' 'w' and '+', for read, write, and creation flags.
|
|
|
585 Optional argument MODE gives the permissions to use when opening FILE,
|
|
|
586 and defaults to 0755.
|
|
771
|
587 Optional argument CODESYS specifies the coding system used to encode/decode
|
|
|
588 data passed to/from the database, and defaults to the value of the
|
|
|
589 variable `database-coding-system'.
|
|
428
|
590 */
|
|
771
|
591 (file, type, subtype, access_, mode, codesys))
|
|
428
|
592 {
|
|
|
593 /* This function can GC */
|
|
|
594 int modemask;
|
|
|
595 int accessmask = 0;
|
|
|
596 Lisp_Database *db = NULL;
|
|
|
597 char *filename;
|
|
|
598 struct gcpro gcpro1, gcpro2;
|
|
|
599
|
|
|
600 CHECK_STRING (file);
|
|
|
601 GCPRO2 (file, access_);
|
|
|
602 file = Fexpand_file_name (file, Qnil);
|
|
|
603 UNGCPRO;
|
|
|
604
|
|
440
|
605 TO_EXTERNAL_FORMAT (LISP_STRING, file,
|
|
|
606 C_STRING_ALLOCA, filename,
|
|
|
607 Qfile_name);
|
|
428
|
608
|
|
|
609 if (NILP (access_))
|
|
|
610 {
|
|
|
611 accessmask = O_RDWR | O_CREAT;
|
|
|
612 }
|
|
|
613 else
|
|
|
614 {
|
|
|
615 char *acc;
|
|
|
616 CHECK_STRING (access_);
|
|
|
617 acc = (char *) XSTRING_DATA (access_);
|
|
|
618
|
|
|
619 if (strchr (acc, '+'))
|
|
|
620 accessmask |= O_CREAT;
|
|
|
621
|
|
|
622 {
|
|
|
623 char *rp = strchr (acc, 'r');
|
|
|
624 char *wp = strchr (acc, 'w');
|
|
|
625 if (rp && wp) accessmask |= O_RDWR;
|
|
|
626 else if (wp) accessmask |= O_WRONLY;
|
|
|
627 else accessmask |= O_RDONLY;
|
|
|
628 }
|
|
|
629 }
|
|
|
630
|
|
|
631 if (NILP (mode))
|
|
|
632 {
|
|
|
633 modemask = 0755; /* rwxr-xr-x */
|
|
|
634 }
|
|
|
635 else
|
|
|
636 {
|
|
|
637 CHECK_INT (mode);
|
|
|
638 modemask = XINT (mode);
|
|
|
639 }
|
|
|
640
|
|
771
|
641 if (NILP (codesys))
|
|
|
642 codesys = Vdatabase_coding_system;
|
|
|
643
|
|
|
644 codesys = get_coding_system_for_text_file (Vdatabase_coding_system, 1);
|
|
|
645
|
|
428
|
646 #ifdef HAVE_DBM
|
|
|
647 if (NILP (type) || EQ (type, Qdbm))
|
|
|
648 {
|
|
|
649 DBM *dbase = dbm_open (filename, accessmask, modemask);
|
|
|
650 if (!dbase)
|
|
|
651 return Qnil;
|
|
|
652
|
|
|
653 db = allocate_database ();
|
|
|
654 db->dbm_handle = dbase;
|
|
|
655 db->funcs = &ndbm_func_block;
|
|
771
|
656 db->coding_system = codesys;
|
|
428
|
657 goto db_done;
|
|
|
658 }
|
|
|
659 #endif /* HAVE_DBM */
|
|
|
660
|
|
|
661 #ifdef HAVE_BERKELEY_DB
|
|
|
662 if (NILP (type) || EQ (type, Qberkeley_db))
|
|
|
663 {
|
|
|
664 DBTYPE real_subtype;
|
|
|
665 DB *dbase;
|
|
|
666 #if DB_VERSION_MAJOR != 1
|
|
|
667 int status;
|
|
|
668 #endif
|
|
|
669
|
|
|
670 if (EQ (subtype, Qhash) || NILP (subtype))
|
|
|
671 real_subtype = DB_HASH;
|
|
|
672 else if (EQ (subtype, Qbtree))
|
|
|
673 real_subtype = DB_BTREE;
|
|
|
674 else if (EQ (subtype, Qrecno))
|
|
|
675 real_subtype = DB_RECNO;
|
|
448
|
676 #if DB_VERSION_MAJOR > 2
|
|
|
677 else if (EQ (subtype, Qqueue))
|
|
|
678 real_subtype = DB_QUEUE;
|
|
|
679 #endif
|
|
428
|
680 else
|
|
563
|
681 invalid_constant ("Unsupported subtype", subtype);
|
|
428
|
682
|
|
|
683 #if DB_VERSION_MAJOR == 1
|
|
|
684 dbase = dbopen (filename, accessmask, modemask, real_subtype, NULL);
|
|
|
685 if (!dbase)
|
|
|
686 return Qnil;
|
|
|
687 #else
|
|
|
688 /* Berkeley DB Version 2 has only the accessmask DB_CREATE and DB_RDONLY,
|
|
|
689 other flags shouldn't be set */
|
|
|
690 if (NILP (access_))
|
|
|
691 accessmask = DB_CREATE;
|
|
|
692 else
|
|
|
693 {
|
|
|
694 char *acc;
|
|
|
695 CHECK_STRING (access_);
|
|
|
696 acc = (char *) XSTRING_DATA (access_);
|
|
|
697 accessmask = 0;
|
|
|
698
|
|
|
699 if (strchr (acc, '+'))
|
|
|
700 accessmask |= DB_CREATE;
|
|
|
701
|
|
|
702 if (strchr (acc, 'r') && !strchr (acc, 'w'))
|
|
|
703 accessmask |= DB_RDONLY;
|
|
|
704 }
|
|
448
|
705 #if DB_VERSION_MAJOR == 2
|
|
428
|
706 status = db_open (filename, real_subtype, accessmask,
|
|
|
707 modemask, NULL , NULL, &dbase);
|
|
|
708 if (status)
|
|
|
709 return Qnil;
|
|
448
|
710 #else
|
|
|
711 status = db_create (&dbase, NULL, 0);
|
|
|
712 if (status)
|
|
|
713 return Qnil;
|
|
1141
|
714 #if DB_VERSION_MAJOR < 4 || (DB_VERSION_MAJOR == 4 && DB_VERSION_MINOR < 1)
|
|
448
|
715 status = dbase->open (dbase, filename, NULL,
|
|
|
716 real_subtype, accessmask, modemask);
|
|
1141
|
717 #else /* DB_VERSION >= 4.1 */
|
|
1377
|
718 /* You can't use DB_AUTO_COMMIT unless you have a txn environment. */
|
|
1141
|
719 status = dbase->open (dbase, NULL, filename, NULL, real_subtype,
|
|
1377
|
720 accessmask, modemask);
|
|
1141
|
721 #endif /* DB_VERSION < 4.1 */
|
|
448
|
722 if (status)
|
|
|
723 {
|
|
|
724 dbase->close (dbase, 0);
|
|
|
725 return Qnil;
|
|
|
726 }
|
|
|
727 #endif /* DB_VERSION_MAJOR > 2 */
|
|
|
728 /* Normalize into system specific file modes. Only for printing */
|
|
|
729 accessmask = accessmask & DB_RDONLY ? O_RDONLY : O_RDWR;
|
|
428
|
730 #endif /* DB_VERSION_MAJOR */
|
|
|
731
|
|
|
732 db = allocate_database ();
|
|
|
733 db->db_handle = dbase;
|
|
|
734 db->funcs = &berk_func_block;
|
|
771
|
735 db->coding_system = codesys;
|
|
428
|
736 goto db_done;
|
|
|
737 }
|
|
|
738 #endif /* HAVE_BERKELEY_DB */
|
|
|
739
|
|
563
|
740 invalid_constant ("Unsupported database type", type);
|
|
428
|
741 return Qnil;
|
|
|
742
|
|
|
743 db_done:
|
|
|
744 db->live_p = 1;
|
|
|
745 db->fname = file;
|
|
|
746 db->mode = modemask;
|
|
|
747 db->access_ = accessmask;
|
|
|
748
|
|
793
|
749 return wrap_database (db);
|
|
428
|
750 }
|
|
|
751
|
|
|
752 DEFUN ("put-database", Fput_database, 3, 4, 0, /*
|
|
|
753 Store KEY and VALUE in DATABASE.
|
|
|
754 If optional fourth arg REPLACE is non-nil,
|
|
|
755 replace any existing entry in the database.
|
|
|
756 */
|
|
|
757 (key, value, database, replace))
|
|
|
758 {
|
|
|
759 CHECK_LIVE_DATABASE (database);
|
|
|
760 CHECK_STRING (key);
|
|
|
761 CHECK_STRING (value);
|
|
|
762 {
|
|
|
763 Lisp_Database *db = XDATABASE (database);
|
|
|
764 int status = db->funcs->put (db, key, value, replace);
|
|
|
765 return status ? Qt : Qnil;
|
|
|
766 }
|
|
|
767 }
|
|
|
768
|
|
|
769 DEFUN ("remove-database", Fremove_database, 2, 2, 0, /*
|
|
|
770 Remove KEY from DATABASE.
|
|
|
771 */
|
|
|
772 (key, database))
|
|
|
773 {
|
|
|
774 CHECK_LIVE_DATABASE (database);
|
|
|
775 CHECK_STRING (key);
|
|
|
776 {
|
|
|
777 Lisp_Database *db = XDATABASE (database);
|
|
|
778 int status = db->funcs->rem (db, key);
|
|
|
779 return status ? Qt : Qnil;
|
|
|
780 }
|
|
|
781 }
|
|
|
782
|
|
|
783 DEFUN ("get-database", Fget_database, 2, 3, 0, /*
|
|
|
784 Return value for KEY in DATABASE.
|
|
|
785 If there is no corresponding value, return DEFAULT (defaults to nil).
|
|
|
786 */
|
|
|
787 (key, database, default_))
|
|
|
788 {
|
|
|
789 CHECK_LIVE_DATABASE (database);
|
|
|
790 CHECK_STRING (key);
|
|
|
791 {
|
|
|
792 Lisp_Database *db = XDATABASE (database);
|
|
|
793 Lisp_Object retval = db->funcs->get (db, key);
|
|
|
794 return NILP (retval) ? default_ : retval;
|
|
|
795 }
|
|
|
796 }
|
|
|
797
|
|
|
798 DEFUN ("map-database", Fmapdatabase, 2, 2, 0, /*
|
|
|
799 Map FUNCTION over entries in DATABASE, calling it with two args,
|
|
|
800 each key and value in the database.
|
|
|
801 */
|
|
|
802 (function, database))
|
|
|
803 {
|
|
|
804 CHECK_LIVE_DATABASE (database);
|
|
|
805
|
|
|
806 XDATABASE (database)->funcs->map (XDATABASE (database), function);
|
|
|
807
|
|
|
808 return Qnil;
|
|
|
809 }
|
|
|
810
|
|
|
811 void
|
|
|
812 syms_of_database (void)
|
|
|
813 {
|
|
442
|
814 INIT_LRECORD_IMPLEMENTATION (database);
|
|
|
815
|
|
563
|
816 DEFSYMBOL (Qdatabasep);
|
|
428
|
817 #ifdef HAVE_DBM
|
|
563
|
818 DEFSYMBOL (Qdbm);
|
|
428
|
819 #endif
|
|
|
820 #ifdef HAVE_BERKELEY_DB
|
|
563
|
821 DEFSYMBOL (Qberkeley_db);
|
|
|
822 DEFSYMBOL (Qhash);
|
|
|
823 DEFSYMBOL (Qbtree);
|
|
|
824 DEFSYMBOL (Qrecno);
|
|
448
|
825 #if DB_VERSION_MAJOR > 2
|
|
563
|
826 DEFSYMBOL (Qqueue);
|
|
448
|
827 #endif
|
|
563
|
828 DEFSYMBOL (Qunknown);
|
|
428
|
829 #endif
|
|
|
830
|
|
|
831 DEFSUBR (Fopen_database);
|
|
|
832 DEFSUBR (Fdatabasep);
|
|
|
833 DEFSUBR (Fmapdatabase);
|
|
|
834 DEFSUBR (Fput_database);
|
|
|
835 DEFSUBR (Fget_database);
|
|
|
836 DEFSUBR (Fremove_database);
|
|
|
837 DEFSUBR (Fdatabase_type);
|
|
|
838 DEFSUBR (Fdatabase_subtype);
|
|
|
839 DEFSUBR (Fdatabase_last_error);
|
|
|
840 DEFSUBR (Fdatabase_live_p);
|
|
|
841 DEFSUBR (Fdatabase_file_name);
|
|
|
842 DEFSUBR (Fclose_database);
|
|
|
843 }
|
|
|
844
|
|
|
845 void
|
|
|
846 vars_of_database (void)
|
|
|
847 {
|
|
|
848 #ifdef HAVE_DBM
|
|
|
849 Fprovide (Qdbm);
|
|
|
850 #endif
|
|
|
851 #ifdef HAVE_BERKELEY_DB
|
|
|
852 Fprovide (Qberkeley_db);
|
|
|
853 #endif
|
|
|
854
|
|
|
855 DEFVAR_LISP ("database-coding-system", &Vdatabase_coding_system /*
|
|
771
|
856 Default coding system used to convert data in database files.
|
|
428
|
857 */ );
|
|
771
|
858 Vdatabase_coding_system = Qnative;
|
|
428
|
859 }
|
