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0
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1 /* Database access routines
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2 Copyright (C) 1996, William M. Perry
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3
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4 This file is part of XEmacs.
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5
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6 XEmacs is free software; you can redistribute it and/or modify it
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7 under the terms of the GNU General Public License as published by the
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8 Free Software Foundation; either version 2, or (at your option) any
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9 later version.
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10
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11 XEmacs is distributed in the hope that it will be useful, but WITHOUT
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12 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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13 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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14 for more details.
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15
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16 You should have received a copy of the GNU General Public License
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17 along with XEmacs; see the file COPYING. If not, write to
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18 the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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19 Boston, MA 02111-1307, USA. */
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20
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21 /* Synched up with: Not in FSF. */
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22
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23 /* Written by Bill Perry */
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149
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24 /* Hacked on by Martin Buchholz */
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0
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25
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26 #include <config.h>
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27 #include "lisp.h"
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28 #include <errno.h>
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29
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149
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30 #ifndef HAVE_DATABASE
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31 #error database.c being compiled, but HAVE_DATABASE not defined!
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32 #endif /* HAVE_DATABASE */
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33
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157
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34 #include "database.h" /* Our include file */
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149
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35
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0
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36 #ifdef HAVE_BERKELEY_DB
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149
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37 /* Work around Berkeley DB's use of int types which are defined
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38 slightly differently in the not quite yet standard <inttypes.h>.
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39 See db.h for details of why we're resorting to this... */
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40 #ifdef HAVE_INTTYPES_H
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41 #define __BIT_TYPES_DEFINED__
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42 #include <inttypes.h>
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43 typedef uint8_t u_int8_t;
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44 typedef uint16_t u_int16_t;
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45 typedef uint32_t u_int32_t;
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46 #ifdef WE_DONT_NEED_QUADS
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47 typedef uint64_t u_int64_t;
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48 #endif /* WE_DONT_NEED_QUADS */
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49 #endif /* HAVE_INTTYPES_H */
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50 #include DB_H_PATH /* Berkeley db's header file */
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0
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51 Lisp_Object Qberkeley_db;
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52 Lisp_Object Qhash;
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53 Lisp_Object Qbtree;
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54 Lisp_Object Qrecno;
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149
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55 #endif /* HAVE_BERKELEY_DB */
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56
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57 #ifdef HAVE_DBM
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58 #include <ndbm.h>
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59 Lisp_Object Qdbm;
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60 #endif /* HAVE_DBM */
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61
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62 Lisp_Object Qdatabasep;
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0
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63
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64 typedef enum { DB_DBM, DB_BERKELEY, DB_UNKNOWN } XEMACS_DB_TYPE;
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65
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66 struct database_struct;
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149
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67 typedef struct database_struct database_struct;
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0
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68
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149
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69 typedef struct
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0
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70 {
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71 CONST char * (*get_subtype) (struct database_struct *);
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72 CONST char * (*get_type) (struct database_struct *);
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73 void * (*open_file) (CONST char *, Lisp_Object, int, int);
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74 Lisp_Object (*get) (struct database_struct *, Lisp_Object);
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75 int (*put) (struct database_struct *, Lisp_Object, Lisp_Object, Lisp_Object);
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76 int (*rem) (struct database_struct *, Lisp_Object);
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77 void (*map) (struct database_struct *, Lisp_Object);
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78 Lisp_Object (*get_lisp_type) (struct database_struct *);
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79 void (*close) (struct database_struct *);
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80 Lisp_Object (*last_error) (struct database_struct *);
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81 } DB_FUNCS;
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82
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83 struct database_struct
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84 {
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85 struct lcrecord_header header;
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86 Lisp_Object fname;
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87 XEMACS_DB_TYPE type;
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88 int mode;
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173
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89 int access_;
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94
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90 int dberrno;
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0
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91 void *db_handle;
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92 DB_FUNCS *funcs;
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149
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93 #ifdef MULE
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94 Lisp_Object coding_system;
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95 #endif
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0
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96 };
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97
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98 #define XDATABASE(x) XRECORD (x, database, struct database_struct)
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99 #define XSETDATABASE(x, p) XSETRECORD (x, p, database)
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100 #define DATABASEP(x) RECORDP (x, database)
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101 #define GC_DATABASEP(x) GC_RECORDP (x, database)
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102 #define CHECK_DATABASE(x) CHECK_RECORD (x, database)
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103 #define DATABASE_LIVE_P(x) (x->db_handle)
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104 static Lisp_Object mark_database (Lisp_Object, void (*) (Lisp_Object));
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105 static void print_database (Lisp_Object, Lisp_Object, int);
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106 static void finalize_database (void *, int);
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107 DEFINE_LRECORD_IMPLEMENTATION ("database", database,
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108 mark_database, print_database,
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109 finalize_database, 0, 0,
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110 struct database_struct);
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111
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112 static struct database_struct *
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113 new_database (void)
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114 {
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115 struct database_struct *dbase
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116 = alloc_lcrecord (sizeof (struct database_struct), lrecord_database);
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117
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118 dbase->fname = Qnil;
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119 dbase->db_handle = NULL;
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173
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120 dbase->access_ = 0;
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0
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121 dbase->mode = 0;
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94
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122 dbase->dberrno = 0;
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0
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123 dbase->type = DB_UNKNOWN;
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149
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124 #ifdef MULE
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125 dbase->coding_system = Fget_coding_system (Qbinary);
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126 #endif
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173
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127 return dbase;
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0
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128 }
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129
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130 static Lisp_Object
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131 mark_database (Lisp_Object obj, void (*markobj) (Lisp_Object))
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132 {
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133 struct database_struct *dbase = XDATABASE (obj);
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134
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135 ((markobj) (dbase->fname));
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173
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136 return Qnil;
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0
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137 }
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138
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139 static void
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140 print_database (Lisp_Object obj, Lisp_Object printcharfun, int escapeflag)
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141 {
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142 struct database_struct *dbase = XDATABASE (obj);
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143 char buf[200];
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144
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145 if (print_readably)
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146 {
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147 error ("printing unreadable object #<database 0x%x>", dbase->header.uid);
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148 }
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149 else
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150 {
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151 CONST char *type;
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152 CONST char *subtype;
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153 CONST char *perms;
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154
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155 perms = (!dbase->db_handle) ? "closed" :
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173
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156 (dbase->access_ & O_WRONLY) ? "writeonly" :
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157 (dbase->access_ & O_RDWR) ? "readwrite" : "readonly";
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0
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158
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159 type = dbase->funcs->get_type (dbase);
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160 subtype = dbase->funcs->get_subtype (dbase);
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161
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162 sprintf (buf, "#<database %s (%s/%s/%s) 0x%x>",
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14
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163 XSTRING_DATA (dbase->fname), type, subtype, perms,
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0
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164 dbase->header.uid);
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165 write_c_string (buf, printcharfun);
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166 }
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167 }
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168
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169 static void
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170 finalize_database (void *header, int for_disksave)
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171 {
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172 struct database_struct *db = (struct database_struct *) header;
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173
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174 if (for_disksave)
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175 {
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176 Lisp_Object obj;
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177 XSETOBJ (obj, Lisp_Record, (void *) db);
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178
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179 signal_simple_error
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180 ("Can't dump an emacs containing window system objects", obj);
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181 }
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182 db->funcs->close (db);
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183 }
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184
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20
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185 DEFUN ("close-database", Fdatabase_close, 1, 1, 0, /*
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0
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186 Close database OBJ.
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20
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187 */
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188 (obj))
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0
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189 {
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190 struct database_struct *db;
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191 CHECK_DATABASE (obj);
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192 db = XDATABASE (obj);
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193
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194 if (DATABASE_LIVE_P (db))
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195 db->funcs->close (db);
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196 else
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197 signal_simple_error ("Attempting to access closed database", obj);
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198
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173
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199 return Qnil;
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0
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200 }
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201
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20
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202 DEFUN ("database-type", Fdatabase_type, 1, 1, 0, /*
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0
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203 Return the type of database OBJ.
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20
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204 */
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205 (obj))
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0
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206 {
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207 struct database_struct *db;
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208 CHECK_DATABASE (obj);
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209 db = XDATABASE (obj);
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210
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211 return db->funcs->get_lisp_type (db);
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212 }
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213
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20
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214 DEFUN ("database-subtype", Fdatabase_subtype, 1, 1, 0, /*
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0
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215 Return the subtype of database OBJ, if any.
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20
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216 */
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217 (obj))
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0
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218 {
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219 struct database_struct *db;
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220
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221 CHECK_DATABASE (obj);
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222 db = XDATABASE (obj);
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223
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173
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224 return intern (db->funcs->get_subtype (db));
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0
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225 }
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226
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20
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227 DEFUN ("database-live-p", Fdatabase_live_p, 1, 1, 0, /*
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0
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228 Return t iff OBJ is an active database, else nil.
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20
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229 */
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230 (obj))
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0
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231 {
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232 struct database_struct *db;
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233 CHECK_DATABASE (obj);
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234 db = XDATABASE (obj);
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235
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173
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236 return DATABASE_LIVE_P (db) ? Qt : Qnil;
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0
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237 }
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238
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20
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239 DEFUN ("database-file-name", Fdatabase_file_name, 1, 1, 0, /*
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0
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240 Return the filename associated with the database OBJ.
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20
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241 */
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242 (obj))
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0
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243 {
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244 struct database_struct *db;
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245 CHECK_DATABASE (obj);
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246 db = XDATABASE (obj);
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173
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247 return db->fname;
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0
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248 }
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249
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20
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250 DEFUN ("databasep", Fdatabasep, 1, 1, 0, /*
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0
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251 Return t iff OBJ is a database, else nil.
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20
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252 */
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253 (obj))
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0
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254 {
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173
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255 return DATABASEP (obj) ? Qt : Qnil;
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0
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256 }
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257
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258 #ifdef HAVE_DBM
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259 static void
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260 dbm_map (struct database_struct *db, Lisp_Object func)
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261 {
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262 datum keydatum, valdatum;
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263 DBM *handle = (DBM *)db->db_handle;
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264 Lisp_Object key, val;
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265
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266 for (keydatum = dbm_firstkey (handle);
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267 keydatum.dptr != NULL;
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268 keydatum = dbm_nextkey (handle))
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269 {
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270 valdatum = dbm_fetch (handle, keydatum);
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271 key = make_string ((unsigned char *) keydatum.dptr, keydatum.dsize);
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272 val = make_string ((unsigned char *) valdatum.dptr, valdatum.dsize);
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273 call2 (func, key, val);
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274 }
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275 }
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276
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277 static Lisp_Object
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278 dbm_get (struct database_struct *db, Lisp_Object key)
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279 {
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280 datum keydatum, valdatum;
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281 DBM *handle = (DBM *)db->db_handle;
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14
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282 keydatum.dptr = (char *) XSTRING_DATA (key);
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283 keydatum.dsize = XSTRING_LENGTH (key);
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0
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284 valdatum = dbm_fetch (handle, keydatum);
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285
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286 return (valdatum.dptr
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287 ? make_string ((unsigned char *) valdatum.dptr, valdatum.dsize)
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288 : Qnil);
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289 }
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290
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291 static int
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292 dbm_put (struct database_struct *db,
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293 Lisp_Object key,
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294 Lisp_Object val,
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295 Lisp_Object replace)
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296 {
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297 DBM *handle = (DBM *)db->db_handle;
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298 datum keydatum, valdatum;
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299
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14
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300 valdatum.dptr = (char *) XSTRING_DATA (val);
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301 valdatum.dsize = XSTRING_LENGTH (val);
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302 keydatum.dptr = (char *) XSTRING_DATA (key);
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303 keydatum.dsize = XSTRING_LENGTH (key);
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0
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304
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305 return (!dbm_store (handle, keydatum, valdatum,
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306 (NILP (replace)) ? DBM_INSERT : DBM_REPLACE));
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307 }
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308
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309 static int
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310 dbm_remove (struct database_struct *db, Lisp_Object key)
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311 {
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312 datum keydatum;
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14
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313 keydatum.dptr = (char *) XSTRING_DATA (key);
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314 keydatum.dsize = XSTRING_LENGTH (key);
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173
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315 return dbm_delete (db->db_handle, keydatum);
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0
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316 }
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317
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318 static Lisp_Object
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319 dbm_lisp_type (struct database_struct *db)
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320 {
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173
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321 return Qdbm;
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0
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322 }
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323
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324 static CONST char *
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325 dbm_type (struct database_struct *db)
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326 {
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173
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327 return "dbm";
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0
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328 }
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329
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330 static CONST char *
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331 dbm_subtype (struct database_struct *db)
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332 {
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173
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333 return "nil";
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0
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334 }
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335
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336 static void *
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173
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337 new_dbm_file (CONST char *file, Lisp_Object subtype, int access_, int mode)
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0
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338 {
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339 DBM *db = NULL;
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173
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340 db = dbm_open ((char *) file, access_, mode);
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0
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341 return (void *) db;
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342 }
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343
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344 static Lisp_Object
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345 dbm_lasterr (struct database_struct *dbp)
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346 {
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151
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347 return lisp_strerror (dbp->dberrno);
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0
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348 }
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349
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350 static void
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351 dbm_closeit (struct database_struct *db)
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352 {
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353 if (db->db_handle)
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354 dbm_close ((DBM *)db->db_handle);
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355 db->db_handle = NULL;
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356 }
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357
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358 static DB_FUNCS ndbm_func_block =
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359 {
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360 dbm_subtype,
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361 dbm_type,
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362 new_dbm_file,
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363 dbm_get,
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364 dbm_put,
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365 dbm_remove,
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366 dbm_map,
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367 dbm_lisp_type,
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368 dbm_closeit,
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369 dbm_lasterr
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370 };
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371 #endif
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372
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|
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373 #ifdef HAVE_BERKELEY_DB
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|
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374 static Lisp_Object
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375 berkdb_lisp_type (struct database_struct *db)
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376 {
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173
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377 return Qberkeley_db;
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0
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378 }
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379
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380 static CONST char *
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381 berkdb_type (struct database_struct *db)
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|
|
382 {
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173
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383 return "berkeley";
|
|
0
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384 }
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385
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386 static CONST char *
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387 berkdb_subtype (struct database_struct *db)
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|
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388 {
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389 DB *temp = (DB *)db->db_handle;
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390
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|
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391 if (!temp)
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173
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392 return "nil";
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0
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393
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394 switch (temp->type)
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|
395 {
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396 case DB_BTREE:
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173
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397 return "btree";
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0
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398 case DB_HASH:
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173
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399 return "hash";
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0
|
400 case DB_RECNO:
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173
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401 return "recno";
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|
0
|
402 }
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173
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403 return "unknown";
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0
|
404 }
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405
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|
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406 static void *
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173
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407 berkdb_open (CONST char *file, Lisp_Object subtype, int access_, int mode)
|
|
0
|
408 {
|
|
|
409 DB *db;
|
|
|
410 DBTYPE real_subtype;
|
|
|
411
|
|
|
412 if (EQ (subtype, Qhash) || NILP (subtype))
|
|
|
413 real_subtype = DB_HASH;
|
|
|
414 else if (EQ (subtype, Qbtree))
|
|
|
415 real_subtype = DB_BTREE;
|
|
|
416 else if (EQ (subtype, Qrecno))
|
|
|
417 real_subtype = DB_RECNO;
|
|
|
418 else
|
|
|
419 signal_simple_error ("Unsupported subtype", subtype);
|
|
|
420
|
|
173
|
421 db = dbopen (file, access_, mode, real_subtype, NULL);
|
|
0
|
422
|
|
|
423 return (void *) db;
|
|
|
424 }
|
|
|
425
|
|
|
426 static Lisp_Object
|
|
|
427 berkdb_lasterr (struct database_struct *dbp)
|
|
|
428 {
|
|
151
|
429 return lisp_strerror (dbp->dberrno);
|
|
0
|
430 }
|
|
|
431
|
|
|
432 static Lisp_Object
|
|
|
433 berkdb_get (struct database_struct *db, Lisp_Object key)
|
|
|
434 {
|
|
|
435 DBT keydatum, valdatum;
|
|
|
436 DB *dbp = (DB *) db->db_handle;
|
|
|
437 int status = 0;
|
|
|
438
|
|
14
|
439 keydatum.data = XSTRING_DATA (key);
|
|
|
440 keydatum.size = XSTRING_LENGTH (key);
|
|
0
|
441
|
|
|
442 status = dbp->get (dbp, &keydatum, &valdatum, 0);
|
|
|
443
|
|
|
444 if (!status)
|
|
173
|
445 return make_string (valdatum.data, valdatum.size);
|
|
0
|
446
|
|
94
|
447 db->dberrno = (status == 1) ? -1 : errno;
|
|
173
|
448 return Qnil;
|
|
0
|
449 }
|
|
|
450
|
|
|
451 static int
|
|
|
452 berkdb_put (struct database_struct *db,
|
|
|
453 Lisp_Object key,
|
|
|
454 Lisp_Object val,
|
|
|
455 Lisp_Object replace)
|
|
|
456 {
|
|
|
457 DBT keydatum, valdatum;
|
|
|
458 DB *dbp = (DB *) db->db_handle;
|
|
|
459 int status = 0;
|
|
|
460
|
|
14
|
461 keydatum.data = XSTRING_DATA (key);
|
|
|
462 keydatum.size = XSTRING_LENGTH (key);
|
|
|
463 valdatum.data = XSTRING_DATA (val);
|
|
|
464 valdatum.size = XSTRING_LENGTH (val);
|
|
0
|
465 status = dbp->put (dbp, &keydatum, &valdatum, NILP (replace)
|
|
|
466 ? R_NOOVERWRITE : 0);
|
|
94
|
467 db->dberrno = (status == 1) ? -1 : errno;
|
|
0
|
468 return status;
|
|
|
469 }
|
|
|
470
|
|
|
471 static int
|
|
|
472 berkdb_remove (struct database_struct *db, Lisp_Object key)
|
|
|
473 {
|
|
|
474 DBT keydatum;
|
|
|
475 DB *dbp = (DB *) db->db_handle;
|
|
|
476 int status;
|
|
|
477
|
|
14
|
478 keydatum.data = XSTRING_DATA (key);
|
|
|
479 keydatum.size = XSTRING_LENGTH (key);
|
|
0
|
480
|
|
|
481 status = dbp->del (dbp, &keydatum, 0);
|
|
|
482 if (!status)
|
|
|
483 return 0;
|
|
|
484
|
|
94
|
485 db->dberrno = (status == 1) ? -1 : errno;
|
|
0
|
486 return 1;
|
|
|
487 }
|
|
|
488
|
|
|
489 static void
|
|
|
490 berkdb_map (struct database_struct *db, Lisp_Object func)
|
|
|
491 {
|
|
|
492 DBT keydatum, valdatum;
|
|
|
493 Lisp_Object key, val;
|
|
|
494 DB *dbp = (DB *) db->db_handle;
|
|
|
495 int status;
|
|
|
496
|
|
|
497 for (status = dbp->seq (dbp, &keydatum, &valdatum, R_FIRST);
|
|
|
498 status == 0;
|
|
|
499 status = dbp->seq (dbp, &keydatum, &valdatum, R_NEXT))
|
|
|
500 {
|
|
|
501 key = make_string (keydatum.data, keydatum.size);
|
|
|
502 val = make_string (valdatum.data, valdatum.size);
|
|
|
503 call2 (func, key, val);
|
|
|
504 }
|
|
|
505 }
|
|
|
506
|
|
|
507 static void
|
|
|
508 berkdb_close (struct database_struct *db)
|
|
|
509 {
|
|
|
510 DB *dbp = (DB *)db->db_handle;
|
|
|
511 if (dbp)
|
|
|
512 {
|
|
|
513 dbp->sync (dbp, 0);
|
|
|
514 dbp->close (dbp);
|
|
|
515 }
|
|
|
516 db->db_handle = NULL;
|
|
|
517 }
|
|
|
518
|
|
|
519 static DB_FUNCS berk_func_block =
|
|
|
520 {
|
|
|
521 berkdb_subtype,
|
|
|
522 berkdb_type,
|
|
|
523 berkdb_open,
|
|
|
524 berkdb_get,
|
|
|
525 berkdb_put,
|
|
|
526 berkdb_remove,
|
|
|
527 berkdb_map,
|
|
|
528 berkdb_lisp_type,
|
|
|
529 berkdb_close,
|
|
|
530 berkdb_lasterr
|
|
|
531 };
|
|
|
532 #endif
|
|
|
533
|
|
20
|
534 DEFUN ("database-last-error", Fdatabase_error, 0, 1, 0, /*
|
|
0
|
535 Return the last error associated with database OBJ.
|
|
20
|
536 */
|
|
|
537 (obj))
|
|
0
|
538 {
|
|
|
539 struct database_struct *db;
|
|
|
540
|
|
|
541 if (NILP (obj))
|
|
151
|
542 return lisp_strerror (errno);
|
|
0
|
543
|
|
|
544 CHECK_DATABASE (obj);
|
|
|
545 db = XDATABASE (obj);
|
|
173
|
546 return db->funcs->last_error (db);
|
|
0
|
547 }
|
|
|
548
|
|
20
|
549 DEFUN ("open-database", Fmake_database, 1, 5, 0, /*
|
|
0
|
550 Open database FILE, using database method TYPE and SUBTYPE, with
|
|
|
551 access rights ACCESS and permissions MODE. ACCESS can be any
|
|
|
552 combination of 'r' 'w' and '+', for read, write, and creation flags.
|
|
20
|
553 */
|
|
173
|
554 (file, type, subtype, access_, mode))
|
|
0
|
555 {
|
|
|
556 Lisp_Object retval = Qnil;
|
|
|
557 int modemask;
|
|
|
558 int accessmask = 0;
|
|
|
559 XEMACS_DB_TYPE the_type;
|
|
|
560 DB_FUNCS *funcblock;
|
|
|
561 struct database_struct *dbase = NULL;
|
|
|
562 void *db = NULL;
|
|
|
563
|
|
70
|
564 CHECK_STRING (file);
|
|
0
|
565
|
|
173
|
566 if (NILP (access_))
|
|
0
|
567 {
|
|
|
568 accessmask = O_RDWR | O_CREAT;
|
|
|
569 }
|
|
|
570 else
|
|
|
571 {
|
|
|
572 char *acc;
|
|
173
|
573 CHECK_STRING (access_);
|
|
|
574 acc = (char *) XSTRING_DATA (access_);
|
|
0
|
575
|
|
|
576 if (strchr (acc, '+'))
|
|
|
577 accessmask |= O_CREAT;
|
|
|
578
|
|
|
579 if (strchr (acc, 'r') && strchr (acc, 'w'))
|
|
|
580 {
|
|
|
581 accessmask |= O_RDWR;
|
|
|
582 }
|
|
|
583 else if (strchr (acc, 'w'))
|
|
|
584 {
|
|
|
585 accessmask |= O_WRONLY;
|
|
|
586 }
|
|
|
587 else
|
|
|
588 {
|
|
|
589 accessmask |= O_RDONLY;
|
|
|
590 }
|
|
|
591 }
|
|
|
592
|
|
|
593 if (NILP (mode))
|
|
|
594 {
|
|
|
595 modemask = 493; /* rwxr-xr-x */
|
|
|
596 }
|
|
|
597 else
|
|
|
598 {
|
|
|
599 CHECK_INT (mode);
|
|
|
600 modemask = XINT (mode);
|
|
|
601 }
|
|
|
602
|
|
|
603 #ifdef HAVE_DBM
|
|
|
604 if (NILP (type) || EQ (type, Qdbm))
|
|
|
605 {
|
|
|
606 the_type = DB_DBM;
|
|
|
607 funcblock = &ndbm_func_block;
|
|
|
608 goto db_done;
|
|
|
609 }
|
|
|
610 #endif
|
|
|
611
|
|
|
612 #ifdef HAVE_BERKELEY_DB
|
|
|
613 if (NILP (type) || EQ (type, Qberkeley_db))
|
|
|
614 {
|
|
|
615
|
|
|
616 funcblock = &berk_func_block;
|
|
|
617 the_type = DB_BERKELEY;
|
|
|
618 goto db_done;
|
|
|
619 }
|
|
|
620 #endif
|
|
|
621
|
|
|
622 signal_simple_error ("Unsupported database type", type);
|
|
173
|
623 return Qnil;
|
|
0
|
624
|
|
|
625 db_done:
|
|
14
|
626 db = funcblock->open_file ((char *) XSTRING_DATA (file), subtype,
|
|
0
|
627 accessmask, modemask);
|
|
|
628
|
|
|
629 if (!db)
|
|
|
630 {
|
|
173
|
631 return Qnil;
|
|
0
|
632 }
|
|
|
633
|
|
|
634 dbase = new_database ();
|
|
|
635 dbase->fname = file;
|
|
|
636 dbase->type = the_type;
|
|
|
637 dbase->mode = modemask;
|
|
173
|
638 dbase->access_ = accessmask;
|
|
0
|
639 dbase->db_handle = db;
|
|
|
640 dbase->funcs = funcblock;
|
|
|
641 XSETDATABASE (retval, dbase);
|
|
|
642
|
|
173
|
643 return retval;
|
|
0
|
644 }
|
|
|
645
|
|
20
|
646 DEFUN ("put-database", Fputdatabase, 3, 4, 0, /*
|
|
0
|
647 Store KEY and VAL in DATABASE. If optinal fourth arg REPLACE is
|
|
|
648 non-nil, replace any existing entry in the database.
|
|
20
|
649 */
|
|
|
650 (key, val, dbase, replace))
|
|
0
|
651 {
|
|
|
652 struct database_struct *db;
|
|
|
653 int status;
|
|
|
654 struct gcpro gcpro1, gcpro2, gcpro3, gcpro4;
|
|
177
|
655
|
|
0
|
656 CHECK_DATABASE (dbase);
|
|
|
657 CHECK_STRING (key);
|
|
177
|
658 CHECK_STRING (val);
|
|
0
|
659 db = XDATABASE (dbase);
|
|
|
660 if (!DATABASE_LIVE_P (db))
|
|
|
661 signal_simple_error ("Attempting to access closed database", dbase);
|
|
|
662
|
|
|
663 GCPRO4 (key, val, dbase, replace);
|
|
|
664 status = db->funcs->put (db, key, val, replace);
|
|
|
665 UNGCPRO;
|
|
|
666 return status ? Qt : Qnil;
|
|
|
667 }
|
|
|
668
|
|
20
|
669 DEFUN ("remove-database", Fremdatabase, 2, 2, 0, /*
|
|
0
|
670 Remove KEY from DATABASE.
|
|
20
|
671 */
|
|
|
672 (key, dbase))
|
|
0
|
673 {
|
|
|
674 struct database_struct *db;
|
|
|
675 CHECK_DATABASE (dbase);
|
|
|
676 CHECK_STRING (key);
|
|
|
677
|
|
|
678 db = XDATABASE (dbase);
|
|
|
679 if (!DATABASE_LIVE_P (db))
|
|
|
680 signal_simple_error ("Attempting to access closed database", dbase);
|
|
|
681 return db->funcs->rem (db, key) ? Qt : Qnil;
|
|
|
682 }
|
|
|
683
|
|
20
|
684 DEFUN ("get-database", Fgetdatabase, 2, 3, 0, /*
|
|
0
|
685 Find value for KEY in DATABASE.
|
|
|
686 If there is no corresponding value, return DEFAULT (defaults to nil).
|
|
20
|
687 */
|
|
173
|
688 (key, dbase, default_))
|
|
0
|
689 {
|
|
|
690 Lisp_Object retval;
|
|
|
691 struct database_struct *db;
|
|
|
692
|
|
|
693 CHECK_DATABASE (dbase);
|
|
|
694 CHECK_STRING (key);
|
|
|
695 db = XDATABASE (dbase);
|
|
|
696 if (!DATABASE_LIVE_P (db))
|
|
|
697 signal_simple_error ("Attempting to access closed database", dbase);
|
|
|
698
|
|
|
699 retval = db->funcs->get (db, key);
|
|
|
700
|
|
173
|
701 return NILP (retval) ? default_ : retval;
|
|
0
|
702 }
|
|
|
703
|
|
20
|
704 DEFUN ("map-database", Fmapdatabase, 2, 2, 0, /*
|
|
0
|
705 Map FUNCTION over entries in DATABASE, calling it with two args,
|
|
|
706 each key and value in the database.
|
|
20
|
707 */
|
|
|
708 (function, dbase))
|
|
0
|
709 {
|
|
|
710 struct gcpro gcpro1, gcpro2;
|
|
|
711 struct database_struct *db;
|
|
|
712
|
|
|
713 CHECK_DATABASE (dbase);
|
|
|
714 GCPRO2 (dbase, function);
|
|
|
715
|
|
|
716 db = XDATABASE (dbase);
|
|
|
717 if (!DATABASE_LIVE_P (db))
|
|
|
718 signal_simple_error ("Attempting to access closed database", dbase);
|
|
|
719 db->funcs->map (db, function);
|
|
|
720 UNGCPRO;
|
|
|
721 return Qnil;
|
|
|
722 }
|
|
|
723
|
|
|
724 void
|
|
|
725 syms_of_dbm (void)
|
|
|
726 {
|
|
|
727 defsymbol (&Qdatabasep, "databasep");
|
|
|
728 #ifdef HAVE_DBM
|
|
|
729 defsymbol (&Qdbm, "dbm");
|
|
|
730 #endif
|
|
|
731 #ifdef HAVE_BERKELEY_DB
|
|
|
732 defsymbol (&Qberkeley_db, "berkeley-db");
|
|
|
733 defsymbol (&Qhash, "hash");
|
|
|
734 defsymbol (&Qbtree, "btree");
|
|
|
735 defsymbol (&Qrecno, "recno");
|
|
|
736 #endif
|
|
|
737
|
|
20
|
738 DEFSUBR (Fmake_database);
|
|
|
739 DEFSUBR (Fdatabasep);
|
|
|
740 DEFSUBR (Fmapdatabase);
|
|
|
741 DEFSUBR (Fputdatabase);
|
|
|
742 DEFSUBR (Fgetdatabase);
|
|
|
743 DEFSUBR (Fremdatabase);
|
|
|
744 DEFSUBR (Fdatabase_type);
|
|
|
745 DEFSUBR (Fdatabase_subtype);
|
|
|
746 DEFSUBR (Fdatabase_error);
|
|
|
747 DEFSUBR (Fdatabase_live_p);
|
|
|
748 DEFSUBR (Fdatabase_file_name);
|
|
|
749 DEFSUBR (Fdatabase_close);
|
|
0
|
750 }
|
|
|
751
|
|
|
752 void
|
|
|
753 vars_of_dbm (void)
|
|
|
754 {
|
|
|
755 #ifdef HAVE_DBM
|
|
|
756 Fprovide (Qdbm);
|
|
|
757 #endif
|
|
|
758 #ifdef HAVE_BERKELEY_DB
|
|
|
759 Fprovide (Qberkeley_db);
|
|
|
760 #endif
|
|
|
761 }
|
