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