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404
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1 /*
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2 postgresql.c -- Emacs Lisp binding to libpq.so
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3 Copyright (C) 2000 Electrotechnical Laboratory, JAPAN.
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4 Licensed to the Free Software Foundation.
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5
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6 Author: SL Baur <steve@beopen.com>
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7 Maintainer: SL Baur <steve@beopen.com>
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8
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9 Please send patches to this file to me first before submitting them to
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10 xemacs-patches.
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11
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12
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13 KNOWN PROBLEMS (Last update 15-March-2000)
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14 + None.
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15
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16 Implementation notes:
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17 0. Supported PostgreSQL versions
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18 This code was developed against libpq-6.5.3 and libpq-7.0-beta1. Earlier
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19 versions may work. V7 support is more complete than V6.5 support.
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20 1. Mule
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21 Non-ASCII databases have been tested on both 6.5 and 7.0.
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22 2. Asynchronous Operation
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23 Starting with libpq-7.0, an asynchronous interface is offered. This
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24 binding supports the asynchronous calls to a limited extent. Since the
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25 XEmacs 21.2 core does not support a sensible interface to add managed but
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26 unreadable (by XEmacs) file descriptors to the main select code, polling
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27 is required to drive the asynchronous calls. XtAppAddInput would work
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28 fine, but we want to be able to use the database when running strictly in
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29 tty mode.
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30 3. Completeness
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31 Various calls have been deliberately not exported to Lisp. The
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32 unexported calls are either left-over backwards compatibility code that
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33 aren't needed, calls that cannot be implemented sensibly, or calls that
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34 cannot be implemented safely. A list of all global functions in libpq
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35 but not exported to Lisp is below.
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36 4. Policy
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37 This interface tries very hard to not set any policy towards how database
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38 code in Emacs Lisp will be written.
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39 5. Documentation
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40 For full lisp programming documentation, see the XEmacs Lisp Reference
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41 Manual. For PostgreSQL documentation, see the PostgreSQL distribution.
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42
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43 TODO (in rough order of priority):
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44 1. Asynchronous notifies need to be implemented to the extent they can be.
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45 2. The large object interface needs work with Emacs buffers in addition
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46 to files. Need two functions buffer->large_object, and large_object->
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47 buffer.
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48 */
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49
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50 /*
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51 Unimplemented functions: [TODO]
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52 PQsetNoticeProcessor
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53
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54 Implemented, but undocumented functions: [TODO]
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55 PQgetline (copy in/out)
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56 PQputline (copy in/out)
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57 PQgetlineAsync (copy in/out Asynch.)
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58 PQputnbytes (copy in/out Asynch.)
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59 PQendcopy (copy in/out)
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60
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61 Unsupported functions:
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62 PQsetdbLogin -- This function is deprecated, has a subset of the
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63 functionality of PQconnectdb, and is better done in Lisp.
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64 PQsetdb -- Same as for PQsetdbLogin
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65 PQsocket -- Abstraction error, file descriptors should not be leaked
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66 into Lisp code
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67 PQprint -- print to a file descriptor, deprecated, better done in Lisp
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68 PQdisplayTuples -- deprecated
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69 PQprintTuples -- really, really deprecated
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70 PQmblen -- Returns the length in bytes of multibyte character encoded
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71 string.
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72 PQtrace -- controls debug print tracing to a tty.
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73 PQuntrace -- Ditto. I don't see any way to do this sensibly.
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74 PQoidStatus -- deprecated and nearly identical to PQoidValue
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75 PQfn -- "Fast path" interface
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76 lo_open (large object) [*]
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77 lo_close (large object) [*]
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78 lo_read (large object) [*]
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79 lo_write (large object) [*]
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80 lo_lseek (large object) [*]
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81 lo_creat (large object) [*]
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82 lo_tell (large object) [*]
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83 lo_unlink (large object) [*]
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84 */
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85
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86 #include <config.h>
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87
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88 /* This must be portable with XEmacs 21.1 so long as it is the official
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89 released version of XEmacs and provides the basis of InfoDock. The
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90 interface to lcrecord handling has changed with 21.2, so unfortunately
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91 we will need a few snippets of backwards compatibility code.
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92 */
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93 #if (EMACS_MAJOR_VERSION == 21) && (EMACS_MINOR_VERSION < 2)
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94 #define RUNNING_XEMACS_21_1 1
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406
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95 #define POSTGRES_INCLUDE(file) <file>
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404
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96 #endif
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97
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98 /* #define POSTGRES_LO_IMPORT_IS_VOID 1 */
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99
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100 #include "lisp.h"
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101 #include "sysdep.h"
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102 #include "buffer.h"
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103
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406
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104 #include POSTGRES_INCLUDE (libpq-fe.h)
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404
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105 #include "postgresql.h"
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106
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107 #ifdef RUNNING_XEMACS_21_1 /* handle interface changes */
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108 #define I_HATE_CONST CONST
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109 #define PG_OS_CODING FORMAT_FILENAME
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110 #define TO_EXTERNAL_FORMAT(a,from,b,to,c) GET_C_STRING_EXT_DATA_ALLOCA(from,FORMAT_FILENAME,to)
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111 #else
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112 #define I_HATE_CONST const
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113 #ifdef MULE
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114 #define PG_OS_CODING Fget_coding_system(Vpg_coding_system)
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115 #else
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116 #define PG_OS_CODING Qnative
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117 #endif
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118 Lisp_Object Vpg_coding_system;
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119 #endif
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120
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121 #define CHECK_LIVE_CONNECTION(P) { \
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122 if (!P || (PQstatus (P) != CONNECTION_OK)) { \
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123 char *e = "bad value"; \
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124 if (P) e = PQerrorMessage (P); \
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125 error ("dead connection [%s]", e); \
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126 } }
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127 #define PUKE_IF_NULL(p) { \
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128 if (!p) error ("bad value"); \
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129 }
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130
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131 static Lisp_Object VXPGHOST;
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132 static Lisp_Object VXPGUSER;
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133 static Lisp_Object VXPGOPTIONS;
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134 static Lisp_Object VXPGPORT;
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135 static Lisp_Object VXPGTTY; /* This needs to be blanked! */
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136 static Lisp_Object VXPGDATABASE;
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137 static Lisp_Object VXPGREALM;
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138 #ifdef MULE
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139 static Lisp_Object VXPGCLIENTENCODING;
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140 #endif /* MULE */
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141
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142 /* Other variables:
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143 PGAUTHTYPE -- not used after PostgreSQL 6.5
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144 PGGEQO
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145 PGCOSTINDEX
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146 PGCOSTHEAP
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147 PGTZ
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148 PGDATESTYLE
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149 */
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150 #ifndef HAVE_POSTGRESQLV7
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151 static Lisp_Object VXPGAUTHTYPE;
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152 #endif
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153 static Lisp_Object VXPGGEQO, VXPGCOSTINDEX, VXPGCOSTHEAP, VXPGTZ, VXPGDATESTYLE;
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154
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155 static Lisp_Object Qpostgresql;
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156 static Lisp_Object Qpg_connection_ok, Qpg_connection_bad;
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157 static Lisp_Object Qpg_connection_started, Qpg_connection_made;
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158 static Lisp_Object Qpg_connection_awaiting_response, Qpg_connection_auth_ok;
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159 static Lisp_Object Qpg_connection_setenv;
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160
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161 static Lisp_Object Qpqdb, Qpquser, Qpqpass, Qpqhost, Qpqport, Qpqtty;
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162 static Lisp_Object Qpqoptions, Qpqstatus, Qpqerrormessage, Qpqbackendpid;
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163
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164 static Lisp_Object Qpgres_empty_query, Qpgres_command_ok, Qpgres_tuples_ok;
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165 static Lisp_Object Qpgres_copy_out, Qpgres_copy_in, Qpgres_bad_response;
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166 static Lisp_Object Qpgres_nonfatal_error, Qpgres_fatal_error;
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167
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168 static Lisp_Object Qpgres_polling_failed, Qpgres_polling_reading;
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169 static Lisp_Object Qpgres_polling_writing, Qpgres_polling_ok;
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170 static Lisp_Object Qpgres_polling_active;
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171 /****/
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172
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173 /* PGconn is an opaque object and we need to be able to store them in
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174 Lisp code because libpq supports multiple connections.
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175 */
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176 Lisp_Object Qpgconnp;
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177
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178 static Lisp_Object
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179 make_pgconn (Lisp_PGconn *pgconn)
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180 {
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181 Lisp_Object lisp_pgconn;
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182 XSETPGCONN (lisp_pgconn, pgconn);
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183 return lisp_pgconn;
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184 }
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185
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186 static Lisp_Object
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187 #ifdef RUNNING_XEMACS_21_1
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188 mark_pgconn (Lisp_Object obj, void (*markobj) (Lisp_Object))
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189 #else
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190 mark_pgconn (Lisp_Object obj)
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191 #endif
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192 {
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193 return Qnil;
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194 }
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195
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196 static void
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197 print_pgconn (Lisp_Object obj, Lisp_Object printcharfun, int escapeflag)
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198 {
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199 char buf[256];
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200 PGconn *P;
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201 ConnStatusType cst;
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202 char *host="", *db="", *user="", *port="";
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203
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204 P = (XPGCONN (obj))->pgconn;
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205
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206 if (!P) /* this may happen since we allow PQfinish() to be called */
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207 strcpy (buf, "#<PGconn DEAD>"); /* evil! */
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208 else if ((cst = PQstatus (P)) == CONNECTION_OK)
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209 {
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210 if (!(host = PQhost (P)))
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211 host = "";
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212 port = PQport (P);
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213 db = PQdb (P);
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214 if (!(user = PQuser (P)))
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215 user = "";
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216 sprintf (buf, "#<PGconn %s:%s %s/%s>", /* evil! */
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217 !strlen (host) ? "localhost" : host,
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218 port,
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219 user,
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220 db);
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221 }
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222 else if (cst == CONNECTION_BAD)
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223 strcpy (buf, "#<PGconn BAD>"); /* evil! */
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224 else
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225 strcpy (buf, "#<PGconn connecting>"); /* evil! */
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226
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227 if (print_readably)
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228 error ("printing unreadable object %s", buf);
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229 else
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230 write_c_string (buf, printcharfun);
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231 }
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232
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233 static Lisp_PGconn *
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234 allocate_pgconn (void)
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235 {
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236 #ifdef RUNNING_XEMACS_21_1
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237 Lisp_PGconn *pgconn = alloc_lcrecord_type (Lisp_PGconn,
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238 lrecord_pgconn);
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239 #else
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240 Lisp_PGconn *pgconn = alloc_lcrecord_type (Lisp_PGconn,
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241 &lrecord_pgconn);
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242 #endif
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243 pgconn->pgconn = (PGconn *)NULL;
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244 return pgconn;
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245 }
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246
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247 static void
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248 finalize_pgconn (void *header, int for_disksave)
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249 {
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250 Lisp_PGconn *pgconn = (Lisp_PGconn *)header;
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251
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252 if (for_disksave)
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253 signal_simple_error ("Can't dump an emacs containing PGconn objects",
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254 make_pgconn (pgconn));
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255
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256 if (pgconn->pgconn)
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257 {
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258 PQfinish (pgconn->pgconn);
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259 pgconn->pgconn = (PGconn *)NULL;
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260 }
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261 }
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262
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263 #ifdef RUNNING_XEMACS_21_1
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264 DEFINE_LRECORD_IMPLEMENTATION ("pgconn", pgconn,
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265 mark_pgconn, print_pgconn, finalize_pgconn,
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266 NULL, NULL,
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267 Lisp_PGconn);
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268 #else
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269 DEFINE_LRECORD_IMPLEMENTATION ("pgconn", pgconn,
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270 mark_pgconn, print_pgconn, finalize_pgconn,
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271 NULL, NULL,
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272 0,
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273 Lisp_PGconn);
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274 #endif
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275 /****/
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276
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277 /* PGresult is an opaque object and we need to be able to store them in
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278 Lisp code.
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279 */
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280 Lisp_Object Qpgresultp;
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281
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282 static Lisp_Object
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283 make_pgresult (Lisp_PGresult *pgresult)
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284 {
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285 Lisp_Object lisp_pgresult;
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286 XSETPGRESULT (lisp_pgresult, pgresult);
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287 return lisp_pgresult;
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288 }
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289
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290 static Lisp_Object
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291 #ifdef RUNNING_XEMACS_21_1
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292 mark_pgresult (Lisp_Object obj, void (*markobj) (Lisp_Object))
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293 #else
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294 mark_pgresult (Lisp_Object obj)
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295 #endif
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296 {
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297 return Qnil;
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298 }
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299
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300 #define RESULT_TUPLES_FMT "#<PGresult %s[%d] - %s>"
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301 #define RESULT_CMD_TUPLES_FMT "#<PGresult %s[%s] - %s>"
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302 #define RESULT_DEFAULT_FMT "#<PGresult %s - %s>"
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303 static void
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304 print_pgresult (Lisp_Object obj, Lisp_Object printcharfun, int escapeflag)
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305 {
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306 char buf[1024];
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307 PGresult *res;
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308
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309 res = (XPGRESULT (obj))->pgresult;
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310
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311 if (res)
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312 {
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313 switch (PQresultStatus (res))
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314 {
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315 case PGRES_TUPLES_OK:
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316 /* Add number of tuples of result to output */
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317 sprintf (buf, RESULT_TUPLES_FMT, /* evil! */
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318 PQresStatus (PQresultStatus (res)),
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319 PQntuples (res),
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320 PQcmdStatus (res));
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321 break;
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322 case PGRES_COMMAND_OK:
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323 /* Add number of tuples affected by output-less command */
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324 if (!strlen (PQcmdTuples (res))) goto notuples;
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325 sprintf (buf, RESULT_CMD_TUPLES_FMT, /* evil! */
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326 PQresStatus (PQresultStatus (res)),
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327 PQcmdTuples (res),
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328 PQcmdStatus (res));
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329 break;
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330 default:
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331 notuples:
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332 /* No counts to print */
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333 sprintf (buf, RESULT_DEFAULT_FMT, /* evil! */
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334 PQresStatus (PQresultStatus (res)),
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335 PQcmdStatus (res));
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336 break;
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337 }
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338 }
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339 else
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340 strcpy (buf, "#<PGresult DEAD>"); /* evil! */
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341
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342 if (print_readably)
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343 error ("printing unreadable object %s", buf);
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344 else
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345 write_c_string (buf, printcharfun);
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346 }
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347
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348 #undef RESULT_TUPLES_FMT
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349 #undef RESULT_CMD_TUPLES_FMT
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350 #undef RESULT_DEFAULT_FMT
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351
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352 static Lisp_PGresult *
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353 allocate_pgresult (void)
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354 {
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355 #ifdef RUNNING_XEMACS_21_1
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356 Lisp_PGresult *pgresult = alloc_lcrecord_type (Lisp_PGresult,
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357 lrecord_pgresult);
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358 #else
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359 Lisp_PGresult *pgresult = alloc_lcrecord_type (Lisp_PGresult,
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360 &lrecord_pgresult);
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361 #endif
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362 pgresult->pgresult = (PGresult *)NULL;
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363 return pgresult;
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364 }
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365
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366 static void
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367 finalize_pgresult (void *header, int for_disksave)
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368 {
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369 Lisp_PGresult *pgresult = (Lisp_PGresult *)header;
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370
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371 if (for_disksave)
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372 signal_simple_error ("Can't dump an emacs containing PGresult objects",
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373 make_pgresult (pgresult));
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374
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375 if (pgresult->pgresult)
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376 {
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377 PQclear (pgresult->pgresult);
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378 pgresult->pgresult = (PGresult *)NULL;
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379 }
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380 }
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381
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382 #ifdef RUNNING_XEMACS_21_1
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383 DEFINE_LRECORD_IMPLEMENTATION ("pgresult", pgresult,
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384 mark_pgresult, print_pgresult, finalize_pgresult,
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385 NULL, NULL,
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386 Lisp_PGresult);
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387 #else
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388 DEFINE_LRECORD_IMPLEMENTATION ("pgresult", pgresult,
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389 mark_pgresult, print_pgresult, finalize_pgresult,
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390 NULL, NULL,
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391 0,
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392 Lisp_PGresult);
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393 #endif
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394
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395 /***********************/
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396
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397 /* notices */
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398 static void
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|
|
399 xemacs_notice_processor (void *arg, I_HATE_CONST char *msg)
|
|
|
400 {
|
|
|
401 warn_when_safe (Qpostgresql, Qnotice, "%s", msg);
|
|
|
402 }
|
|
|
403
|
|
|
404 /* There are four ways (as of PostgreSQL v7) to connect to a database.
|
|
|
405 Two of them, PQsetdb and PQsetdbLogin, are deprecated. Both of those
|
|
|
406 routines take a number of positional parameters and are better done in Lisp.
|
|
|
407 Note that PQconnectStart does not exist prior to v7.
|
|
|
408 */
|
|
|
409
|
|
|
410 DEFUN ("pq-conn-defaults", Fpq_conn_defaults, 0, 0, 0, /*
|
|
|
411 Return a connection default structure.
|
|
|
412 */
|
|
|
413 ())
|
|
|
414 {
|
|
|
415 /* This function can GC */
|
|
|
416 PQconninfoOption *pcio;
|
|
|
417 Lisp_Object temp, temp1;
|
|
|
418 int i;
|
|
|
419
|
|
|
420 pcio = PQconndefaults();
|
|
|
421 if (!pcio) return Qnil; /* can never happen in libpq-7.0 */
|
|
|
422 temp = list1 (Fcons (build_ext_string (pcio[0].keyword, PG_OS_CODING),
|
|
|
423 Fcons (build_ext_string (pcio[0].envvar, PG_OS_CODING),
|
|
|
424 Fcons (build_ext_string (pcio[0].compiled, PG_OS_CODING),
|
|
|
425 Fcons (build_ext_string (pcio[0].val, PG_OS_CODING),
|
|
|
426 Fcons (build_ext_string (pcio[0].label, PG_OS_CODING),
|
|
|
427 Fcons (build_ext_string (pcio[0].dispchar, PG_OS_CODING),
|
|
|
428 Fcons (make_int (pcio[0].dispsize), Qnil))))))));
|
|
|
429
|
|
|
430 for (i = 1; pcio[i].keyword; i++)
|
|
|
431 {
|
|
|
432 temp1 = list1 (Fcons (build_ext_string (pcio[i].keyword, PG_OS_CODING),
|
|
|
433 Fcons (build_ext_string (pcio[i].envvar, PG_OS_CODING),
|
|
|
434 Fcons (build_ext_string (pcio[i].compiled, PG_OS_CODING),
|
|
|
435 Fcons (build_ext_string (pcio[i].val, PG_OS_CODING),
|
|
|
436 Fcons (build_ext_string (pcio[i].label, PG_OS_CODING),
|
|
|
437 Fcons (build_ext_string (pcio[i].dispchar, PG_OS_CODING),
|
|
|
438 Fcons (make_int (pcio[i].dispsize), Qnil))))))));
|
|
|
439 {
|
|
|
440 Lisp_Object args[2];
|
|
|
441 args[0] = temp;
|
|
|
442 args[1] = temp1;
|
|
|
443 /* Fappend GCPROs its arguments */
|
|
|
444 temp = Fappend (2, args);
|
|
|
445 }
|
|
|
446 }
|
|
|
447
|
|
|
448 return temp;
|
|
|
449 }
|
|
|
450
|
|
|
451 /* PQconnectdb Makes a new connection to a backend.
|
|
|
452 PGconn *PQconnectdb(const char *conninfo)
|
|
|
453 */
|
|
|
454
|
|
|
455 DEFUN ("pq-connectdb", Fpq_connectdb, 1, 1, 0, /*
|
|
|
456 Make a new connection to a PostgreSQL backend.
|
|
|
457 */
|
|
|
458 (conninfo))
|
|
|
459 {
|
|
|
460 PGconn *P;
|
|
|
461 Lisp_PGconn *lisp_pgconn;
|
|
|
462 char *error_message = "Out of Memory?";
|
|
|
463 char *c_conninfo;
|
|
|
464
|
|
|
465 CHECK_STRING (conninfo);
|
|
|
466
|
|
|
467 TO_EXTERNAL_FORMAT(LISP_STRING, conninfo,
|
|
|
468 C_STRING_ALLOCA, c_conninfo, Qnative);
|
|
|
469 P = PQconnectdb (c_conninfo);
|
|
|
470 if (P && (PQstatus (P) == CONNECTION_OK))
|
|
|
471 {
|
|
|
472 (void)PQsetNoticeProcessor (P, xemacs_notice_processor, NULL);
|
|
|
473 lisp_pgconn = allocate_pgconn();
|
|
|
474 lisp_pgconn->pgconn = P;
|
|
|
475 return make_pgconn (lisp_pgconn);
|
|
|
476 }
|
|
|
477 else
|
|
|
478 {
|
|
|
479 /* Connection failed. Destroy the connection and signal an error. */
|
|
|
480 char buf[BLCKSZ];
|
|
|
481 strcpy (buf, error_message);
|
|
|
482 if (P)
|
|
|
483 {
|
|
|
484 /* storage for the error message gets erased when call PQfinish */
|
|
|
485 /* so we must temporarily stash it somewhere */
|
|
|
486 strncpy (buf, PQerrorMessage (P), sizeof (buf));
|
|
|
487 buf[sizeof (buf) - 1] = '\0';
|
|
|
488 PQfinish (P);
|
|
|
489 }
|
|
|
490 error ("libpq: %s", buf);
|
|
|
491 }
|
|
|
492 }
|
|
|
493
|
|
|
494 /* PQconnectStart Makes a new asynchronous connection to a backend.
|
|
|
495 PGconn *PQconnectStart(const char *conninfo)
|
|
|
496 */
|
|
|
497
|
|
|
498 #ifdef HAVE_POSTGRESQLV7
|
|
|
499 DEFUN ("pq-connect-start", Fpq_connect_start, 1, 1, 0, /*
|
|
|
500 Make a new asynchronous connection to a PostgreSQL backend.
|
|
|
501 */
|
|
|
502 (conninfo))
|
|
|
503 {
|
|
|
504 PGconn *P;
|
|
|
505 Lisp_PGconn *lisp_pgconn;
|
|
|
506 char *error_message = "Out of Memory?";
|
|
|
507 char *c_conninfo;
|
|
|
508
|
|
|
509 CHECK_STRING (conninfo);
|
|
|
510 TO_EXTERNAL_FORMAT (LISP_STRING, conninfo,
|
|
|
511 C_STRING_ALLOCA, c_conninfo, Qnative);
|
|
|
512 P = PQconnectStart (c_conninfo);
|
|
|
513
|
|
|
514 if (P && (PQstatus (P) != CONNECTION_BAD))
|
|
|
515 {
|
|
|
516 (void)PQsetNoticeProcessor (P, xemacs_notice_processor, NULL);
|
|
|
517 lisp_pgconn = allocate_pgconn();
|
|
|
518 lisp_pgconn->pgconn = P;
|
|
|
519
|
|
|
520 return make_pgconn (lisp_pgconn);
|
|
|
521 }
|
|
|
522 else
|
|
|
523 {
|
|
|
524 /* capture the error message before destroying the object */
|
|
|
525 char buf[BLCKSZ];
|
|
|
526 strcpy (buf, error_message);
|
|
|
527 if (P)
|
|
|
528 {
|
|
|
529 strncpy (buf, PQerrorMessage (P), sizeof (buf));
|
|
|
530 buf[sizeof (buf) - 1] = '\0';
|
|
|
531 PQfinish (P);
|
|
|
532 }
|
|
|
533 error ("libpq: %s", buf);
|
|
|
534 }
|
|
|
535 }
|
|
|
536
|
|
|
537 DEFUN ("pq-connect-poll", Fpq_connect_poll, 1, 1, 0, /*
|
|
|
538 Poll an asynchronous connection for completion
|
|
|
539 */
|
|
|
540 (conn))
|
|
|
541 {
|
|
|
542 PGconn *P;
|
|
|
543 PostgresPollingStatusType PS;
|
|
|
544
|
|
|
545 CHECK_PGCONN (conn);
|
|
|
546
|
|
|
547 P = (XPGCONN (conn))->pgconn;
|
|
|
548 CHECK_LIVE_CONNECTION (P);
|
|
|
549
|
|
|
550 PS = PQconnectPoll (P);
|
|
|
551 switch (PS)
|
|
|
552 {
|
|
|
553 case PGRES_POLLING_FAILED:
|
|
|
554 /* Something Bad has happened */
|
|
|
555 {
|
|
|
556 char *e = PQerrorMessage (P);
|
|
|
557 error ("libpq: %s", e);
|
|
|
558 }
|
|
|
559 case PGRES_POLLING_OK:
|
|
|
560 return Qpgres_polling_ok;
|
|
|
561 case PGRES_POLLING_READING:
|
|
|
562 return Qpgres_polling_reading;
|
|
|
563 case PGRES_POLLING_WRITING:
|
|
|
564 return Qpgres_polling_writing;
|
|
|
565 case PGRES_POLLING_ACTIVE:
|
|
|
566 return Qpgres_polling_active;
|
|
|
567 default:
|
|
|
568 /* they've added a new field we don't know about */
|
|
|
569 error ("Help! Unknown status code %08x from backend!", PS);
|
|
|
570 }
|
|
|
571 }
|
|
|
572
|
|
|
573 #ifdef MULE
|
|
|
574 DEFUN ("pq-client-encoding", Fpq_client_encoding, 1, 1, 0, /*
|
|
|
575 Return client coding system.
|
|
|
576 */
|
|
|
577 (conn))
|
|
|
578 {
|
|
|
579 PGconn *P;
|
|
|
580
|
|
|
581 CHECK_PGCONN (conn);
|
|
|
582 P = (XPGCONN (conn))->pgconn;
|
|
|
583 CHECK_LIVE_CONNECTION (P);
|
|
|
584
|
|
|
585 return make_int (PQclientEncoding (P));
|
|
|
586 }
|
|
|
587
|
|
|
588 DEFUN ("pq-set-client-encoding", Fpq_set_client_encoding, 2, 2, 0, /*
|
|
|
589 Set client coding system.
|
|
|
590 */
|
|
|
591 (conn, encoding))
|
|
|
592 {
|
|
|
593 PGconn *P;
|
|
|
594 int rc;
|
|
|
595 char *c_encoding;
|
|
|
596
|
|
|
597 CHECK_PGCONN (conn);
|
|
|
598 CHECK_STRING (encoding);
|
|
|
599
|
|
|
600 P = (XPGCONN (conn))->pgconn;
|
|
|
601 CHECK_LIVE_CONNECTION (P);
|
|
|
602
|
|
|
603 TO_EXTERNAL_FORMAT (LISP_STRING, encoding,
|
|
|
604 C_STRING_ALLOCA, c_encoding, Qnative);
|
|
|
605
|
|
|
606 if ((rc = PQsetClientEncoding (P, c_encoding)) < 0)
|
|
|
607 error ("bad encoding");
|
|
|
608 else
|
|
|
609 return make_int (rc);
|
|
|
610 }
|
|
|
611
|
|
|
612 #endif
|
|
|
613 #endif /* HAVE_POSTGRESQLV7 */
|
|
|
614
|
|
|
615 /* PQfinish Close the connection to the backend. Also frees memory
|
|
|
616 used by the PGconn object.
|
|
|
617 void PQfinish(PGconn *conn)
|
|
|
618 */
|
|
|
619 DEFUN ("pq-finish", Fpq_finish, 1, 1, 0, /*
|
|
|
620 Close the connection to the backend.
|
|
|
621 */
|
|
|
622 (conn))
|
|
|
623 {
|
|
|
624 PGconn *P;
|
|
|
625
|
|
|
626 CHECK_PGCONN (conn);
|
|
|
627 P = (XPGCONN (conn))->pgconn;
|
|
|
628 PUKE_IF_NULL (P);
|
|
|
629
|
|
|
630 PQfinish (P);
|
|
|
631 /* #### PQfinish deallocates the PGconn structure, so we now have a
|
|
|
632 dangling pointer. */
|
|
|
633 /* Genocided all @'s ... */
|
|
|
634 (XPGCONN (conn))->pgconn = (PGconn *)NULL; /* You feel DEAD inside */
|
|
|
635 return Qnil;
|
|
|
636 }
|
|
|
637
|
|
|
638 DEFUN ("pq-clear", Fpq_clear, 1, 1, 0, /*
|
|
|
639 Forcibly erase a PGresult object.
|
|
|
640 */
|
|
|
641 (res))
|
|
|
642 {
|
|
|
643 PGresult *R;
|
|
|
644
|
|
|
645 CHECK_PGRESULT (res);
|
|
|
646 R = (XPGRESULT (res))->pgresult;
|
|
|
647 PUKE_IF_NULL (R);
|
|
|
648
|
|
|
649 PQclear (R);
|
|
|
650 /* Genocided all @'s ... */
|
|
|
651 (XPGRESULT (res))->pgresult = (PGresult *)NULL; /* You feel DEAD inside */
|
|
|
652
|
|
|
653 return Qnil;
|
|
|
654 }
|
|
|
655
|
|
|
656 DEFUN ("pq-is-busy", Fpq_is_busy, 1, 1, 0, /*
|
|
|
657 Return t if PQgetResult would block waiting for input.
|
|
|
658 */
|
|
|
659 (conn))
|
|
|
660 {
|
|
|
661 PGconn *P;
|
|
|
662
|
|
|
663 CHECK_PGCONN (conn);
|
|
|
664 P = (XPGCONN (conn))->pgconn;
|
|
|
665 CHECK_LIVE_CONNECTION (P);
|
|
|
666
|
|
|
667 return PQisBusy (P) ? Qt : Qnil;
|
|
|
668 }
|
|
|
669
|
|
|
670 DEFUN ("pq-consume-input", Fpq_consume_input, 1, 1, 0, /*
|
|
|
671 Consume any available input from the backend.
|
|
|
672 Returns nil if something bad happened.
|
|
|
673 */
|
|
|
674 (conn))
|
|
|
675 {
|
|
|
676 PGconn *P;
|
|
|
677
|
|
|
678 CHECK_PGCONN (conn);
|
|
|
679 P = (XPGCONN (conn))->pgconn;
|
|
|
680 CHECK_LIVE_CONNECTION (P);
|
|
|
681
|
|
|
682 return PQconsumeInput (P) ? Qt : Qnil;
|
|
|
683 }
|
|
|
684
|
|
|
685 /* PQreset Reset the communication port with the backend.
|
|
|
686 void PQreset(PGconn *conn)
|
|
|
687 */
|
|
|
688 DEFUN ("pq-reset", Fpq_reset, 1, 1, 0, /*
|
|
|
689 Reset the connection to the backend.
|
|
|
690 This function will close the connection to the backend and attempt to
|
|
|
691 reestablish a new connection to the same postmaster, using all the same
|
|
|
692 parameters previously used. This may be useful for error recovery if a
|
|
|
693 working connection is lost.
|
|
|
694 */
|
|
|
695 (conn))
|
|
|
696 {
|
|
|
697 PGconn *P;
|
|
|
698
|
|
|
699 CHECK_PGCONN (conn);
|
|
|
700 P = (XPGCONN (conn))->pgconn;
|
|
|
701 PUKE_IF_NULL (P);/* we can resurrect a BAD connection, but not a dead one. */
|
|
|
702
|
|
|
703 PQreset (P);
|
|
|
704
|
|
|
705 return Qnil;
|
|
|
706 }
|
|
|
707
|
|
|
708 #ifdef HAVE_POSTGRESQLV7
|
|
|
709 DEFUN ("pq-reset-start", Fpq_reset_start, 1, 1, 0, /*
|
|
|
710 Reset connection to the backend asynchronously.
|
|
|
711 */
|
|
|
712 (conn))
|
|
|
713 {
|
|
|
714 PGconn *P;
|
|
|
715
|
|
|
716 CHECK_PGCONN (conn);
|
|
|
717 P = (XPGCONN (conn))->pgconn;
|
|
|
718 CHECK_LIVE_CONNECTION (P);
|
|
|
719
|
|
|
720 if (PQresetStart (P)) return Qt;
|
|
|
721 {
|
|
|
722 char *e = PQerrorMessage (P);
|
|
|
723 error ("libpq: %s", e);
|
|
|
724 }
|
|
|
725 }
|
|
|
726
|
|
|
727 DEFUN ("pq-reset-poll", Fpq_reset_poll, 1, 1, 0, /*
|
|
|
728 Poll an asynchronous reset for completion
|
|
|
729 */
|
|
|
730 (conn))
|
|
|
731 {
|
|
|
732 PGconn *P;
|
|
|
733 PostgresPollingStatusType PS;
|
|
|
734
|
|
|
735 CHECK_PGCONN (conn);
|
|
|
736
|
|
|
737 P = (XPGCONN (conn))->pgconn;
|
|
|
738 CHECK_LIVE_CONNECTION (P);
|
|
|
739
|
|
|
740 PS = PQresetPoll (P);
|
|
|
741 switch (PS)
|
|
|
742 {
|
|
|
743 case PGRES_POLLING_FAILED:
|
|
|
744 /* Something Bad has happened */
|
|
|
745 {
|
|
|
746 char *e = PQerrorMessage (P);
|
|
|
747 error ("libpq: %s", e);
|
|
|
748 }
|
|
|
749 case PGRES_POLLING_OK:
|
|
|
750 return Qpgres_polling_ok;
|
|
|
751 case PGRES_POLLING_READING:
|
|
|
752 return Qpgres_polling_reading;
|
|
|
753 case PGRES_POLLING_WRITING:
|
|
|
754 return Qpgres_polling_writing;
|
|
|
755 case PGRES_POLLING_ACTIVE:
|
|
|
756 return Qpgres_polling_active;
|
|
|
757 default:
|
|
|
758 /* they've added a new field we don't know about */
|
|
|
759 error ("Help! Unknown status code %08x from backend!", PS);
|
|
|
760 }
|
|
|
761 }
|
|
|
762 #endif
|
|
|
763
|
|
|
764 DEFUN ("pq-request-cancel", Fpq_request_cancel, 1, 1, 0, /*
|
|
|
765 Attempt to request cancellation of the current operation.
|
|
|
766
|
|
|
767 The return value is t if the cancel request was successfully
|
|
|
768 dispatched, nil if not (in which case conn->errorMessage is set).
|
|
|
769 Note: successful dispatch is no guarantee that there will be any effect at
|
|
|
770 the backend. The application must read the operation result as usual.
|
|
|
771 */
|
|
|
772 (conn))
|
|
|
773 {
|
|
|
774 PGconn *P;
|
|
|
775
|
|
|
776 CHECK_PGCONN (conn);
|
|
|
777 P = (XPGCONN (conn))->pgconn;
|
|
|
778 CHECK_LIVE_CONNECTION (P);
|
|
|
779
|
|
|
780 return PQrequestCancel (P) ? Qt : Qnil;
|
|
|
781 }
|
|
|
782
|
|
|
783 /* accessor function for the PGconn object */
|
|
|
784 DEFUN ("pq-pgconn", Fpq_pgconn, 2, 2, 0, /*
|
|
|
785 Accessor function for the PGconn object.
|
|
|
786 Currently recognized symbols for the field:
|
|
|
787 pq::db Database name
|
|
|
788 pq::user Database user name
|
|
|
789 pq::pass Database user's password
|
|
|
790 pq::host Hostname of PostgreSQL backend connected to
|
|
|
791 pq::port TCP port number of connection
|
|
|
792 pq::tty Debugging TTY (not used in Emacs)
|
|
|
793 pq::options Additional backend options
|
|
|
794 pq::status Connection status (either OK or BAD)
|
|
|
795 pq::error-message Last error message from the backend
|
|
|
796 pq::backend-pid Process ID of backend process
|
|
|
797 */
|
|
|
798 (conn, field))
|
|
|
799 {
|
|
|
800 PGconn *P;
|
|
|
801
|
|
|
802 CHECK_PGCONN (conn);
|
|
|
803 P = (XPGCONN (conn))->pgconn;
|
|
|
804 PUKE_IF_NULL (P); /* BAD connections still have state to query */
|
|
|
805
|
|
|
806 if (EQ(field, Qpqdb))
|
|
|
807 /* PQdb Returns the database name of the connection.
|
|
|
808 char *PQdb(PGconn *conn)
|
|
|
809 */
|
|
|
810 return build_ext_string (PQdb(P), PG_OS_CODING);
|
|
|
811 else if (EQ (field, Qpquser))
|
|
|
812 /* PQuser Returns the user name of the connection.
|
|
|
813 char *PQuser(PGconn *conn)
|
|
|
814 */
|
|
|
815 return build_ext_string (PQuser(P), PG_OS_CODING);
|
|
|
816 else if (EQ (field, Qpqpass))
|
|
|
817 /* PQpass Returns the password of the connection.
|
|
|
818 char *PQpass(PGconn *conn)
|
|
|
819 */
|
|
|
820 return build_ext_string (PQpass(P), PG_OS_CODING);
|
|
|
821 else if (EQ (field, Qpqhost))
|
|
|
822 /* PQhost Returns the server host name of the connection.
|
|
|
823 char *PQhost(PGconn *conn)
|
|
|
824 */
|
|
|
825 return build_ext_string (PQhost(P), PG_OS_CODING);
|
|
|
826 else if (EQ (field, Qpqport))
|
|
|
827 {
|
|
|
828 char *p;
|
|
|
829 /* PQport Returns the port of the connection.
|
|
|
830 char *PQport(PGconn *conn)
|
|
|
831 */
|
|
|
832 if ((p = PQport(P)))
|
|
|
833 return make_int(atoi(p));
|
|
|
834 else
|
|
|
835 return make_int(-1);
|
|
|
836 }
|
|
|
837 else if (EQ (field, Qpqtty))
|
|
|
838 /* PQtty Returns the debug tty of the connection.
|
|
|
839 char *PQtty(PGconn *conn)
|
|
|
840 */
|
|
|
841 return build_ext_string (PQtty(P), PG_OS_CODING);
|
|
|
842 else if (EQ (field, Qpqoptions))
|
|
|
843 /* PQoptions Returns the backend options used in the connection.
|
|
|
844 char *PQoptions(PGconn *conn)
|
|
|
845 */
|
|
|
846 return build_ext_string (PQoptions(P), PG_OS_CODING);
|
|
|
847 else if (EQ (field, Qpqstatus))
|
|
|
848 {
|
|
|
849 ExecStatusType est;
|
|
|
850 /* PQstatus Returns the status of the connection. The status can be
|
|
|
851 CONNECTION_OK or CONNECTION_BAD.
|
|
|
852 ConnStatusType PQstatus(PGconn *conn)
|
|
|
853 */
|
|
|
854 switch ((est = PQstatus (P)))
|
|
|
855 {
|
|
|
856 case CONNECTION_OK: return Qpg_connection_ok;
|
|
|
857 case CONNECTION_BAD: return Qpg_connection_bad;
|
|
|
858 #ifdef HAVE_POSTGRESQLV7
|
|
|
859 case CONNECTION_STARTED: return Qpg_connection_started;
|
|
|
860 case CONNECTION_MADE: return Qpg_connection_made;
|
|
|
861 case CONNECTION_AWAITING_RESPONSE: return Qpg_connection_awaiting_response;
|
|
|
862 case CONNECTION_AUTH_OK: return Qpg_connection_auth_ok;
|
|
|
863 case CONNECTION_SETENV: return Qpg_connection_setenv;
|
|
|
864 #endif /* HAVE_POSTGRESQLV7 */
|
|
|
865 default:
|
|
|
866 /* they've added a new field we don't know about */
|
|
|
867 error ("Help! Unknown exec status code %08x from backend!", est);
|
|
|
868 }
|
|
|
869 }
|
|
|
870 else if (EQ (field, Qpqerrormessage))
|
|
|
871 /* PQerrorMessage Returns the error message most recently generated
|
|
|
872 by an operation on the connection.
|
|
|
873 char *PQerrorMessage(PGconn* conn);
|
|
|
874 */
|
|
|
875 return build_ext_string (PQerrorMessage(P), PG_OS_CODING);
|
|
|
876 else if (EQ (field, Qpqbackendpid))
|
|
|
877 /* PQbackendPID Returns the process ID of the backend server handling
|
|
|
878 this connection.
|
|
|
879 int PQbackendPID(PGconn *conn);
|
|
|
880 */
|
|
|
881 return make_int (PQbackendPID(P));
|
|
|
882 else
|
|
|
883 error ("bad PGconn accessor");
|
|
|
884 }
|
|
|
885
|
|
|
886 /* Query functions */
|
|
|
887 DEFUN ("pq-exec", Fpq_exec, 2, 2, 0, /*
|
|
|
888 Submit a query to Postgres and wait for the result.
|
|
|
889 */
|
|
|
890 (conn, query))
|
|
|
891 {
|
|
|
892 PGconn *P;
|
|
|
893 Lisp_PGresult *lisp_pgresult;
|
|
|
894 PGresult *R;
|
|
|
895 char *c_query;
|
|
|
896
|
|
|
897 CHECK_PGCONN (conn);
|
|
|
898 CHECK_STRING (query);
|
|
|
899
|
|
|
900 P = (XPGCONN (conn))->pgconn;
|
|
|
901 CHECK_LIVE_CONNECTION (P);
|
|
|
902
|
|
|
903 TO_EXTERNAL_FORMAT (LISP_STRING, query,
|
|
|
904 C_STRING_ALLOCA, c_query, Qnative);
|
|
|
905
|
|
|
906 R = PQexec (P, c_query);
|
|
|
907 {
|
|
|
908 char *tag, buf[BLCKSZ];
|
|
|
909
|
|
|
910 if (!R) error ("query: out of memory");
|
|
|
911 else
|
|
|
912 switch (PQresultStatus (R))
|
|
|
913 {
|
|
|
914 case PGRES_BAD_RESPONSE:
|
|
|
915 tag = "bad response [%s]";
|
|
|
916 goto err;
|
|
|
917 case PGRES_NONFATAL_ERROR:
|
|
|
918 tag = "non-fatal error [%s]";
|
|
|
919 goto err;
|
|
|
920 case PGRES_FATAL_ERROR:
|
|
|
921 tag = "fatal error [%s]";
|
|
|
922 err:
|
|
|
923 strncpy (buf, PQresultErrorMessage (R), sizeof (buf));
|
|
|
924 buf [sizeof (buf) - 1] = '\0';
|
|
|
925 PQclear (R);
|
|
|
926 error (tag, buf);
|
|
|
927 /*NOTREACHED*/
|
|
|
928 default:
|
|
|
929 break;
|
|
|
930 }
|
|
|
931 }
|
|
|
932
|
|
|
933 lisp_pgresult = allocate_pgresult ();
|
|
|
934 lisp_pgresult->pgresult = R;
|
|
|
935
|
|
|
936 return make_pgresult (lisp_pgresult);
|
|
|
937 }
|
|
|
938
|
|
|
939 DEFUN ("pq-send-query", Fpq_send_query, 2, 2, 0, /*
|
|
|
940 Submit a query to Postgres and don't wait for the result.
|
|
|
941 Returns: t if successfully submitted
|
|
|
942 nil if error (conn->errorMessage is set)
|
|
|
943 */
|
|
|
944 (conn, query))
|
|
|
945 {
|
|
|
946 PGconn *P;
|
|
|
947 char *c_query;
|
|
|
948
|
|
|
949 CHECK_PGCONN (conn);
|
|
|
950 CHECK_STRING (query);
|
|
|
951
|
|
|
952 P = (XPGCONN (conn))->pgconn;
|
|
|
953 CHECK_LIVE_CONNECTION (P);
|
|
|
954
|
|
|
955 TO_EXTERNAL_FORMAT (LISP_STRING, query,
|
|
|
956 C_STRING_ALLOCA, c_query, Qnative);
|
|
|
957
|
|
|
958 if (PQsendQuery (P, c_query)) return Qt;
|
|
|
959 else error ("async query: %s", PQerrorMessage (P));
|
|
|
960 }
|
|
|
961
|
|
|
962 DEFUN ("pq-get-result", Fpq_get_result, 1, 1, 0, /*
|
|
|
963 Retrieve an asynchronous result from a query.
|
|
|
964 NIL is returned when no more query work remains.
|
|
|
965 */
|
|
|
966 (conn))
|
|
|
967 {
|
|
|
968 PGconn *P;
|
|
|
969 Lisp_PGresult *lisp_pgresult;
|
|
|
970 PGresult *R;
|
|
|
971
|
|
|
972 CHECK_PGCONN (conn);
|
|
|
973
|
|
|
974 P = (XPGCONN (conn))->pgconn;
|
|
|
975 CHECK_LIVE_CONNECTION (P);
|
|
|
976
|
|
|
977 R = PQgetResult (P);
|
|
|
978 if (!R) return Qnil; /* not an error, there's no more data to get */
|
|
|
979
|
|
|
980 {
|
|
|
981 char *tag, buf[BLCKSZ];
|
|
|
982
|
|
|
983 switch (PQresultStatus (R))
|
|
|
984 {
|
|
|
985 case PGRES_BAD_RESPONSE:
|
|
|
986 tag = "bad response [%s]";
|
|
|
987 goto err;
|
|
|
988 case PGRES_NONFATAL_ERROR:
|
|
|
989 tag = "non-fatal error [%s]";
|
|
|
990 goto err;
|
|
|
991 case PGRES_FATAL_ERROR:
|
|
|
992 tag = "fatal error [%s]";
|
|
|
993 err:
|
|
|
994 strncpy (buf, PQresultErrorMessage (R), sizeof (buf));
|
|
|
995 buf[sizeof (buf) - 1] = '\0';
|
|
|
996 PQclear (R);
|
|
|
997 error (tag, buf);
|
|
|
998 /*NOTREACHED*/
|
|
|
999 default:
|
|
|
1000 break;
|
|
|
1001 }
|
|
|
1002 }
|
|
|
1003
|
|
|
1004 lisp_pgresult = allocate_pgresult();
|
|
|
1005 lisp_pgresult->pgresult = R;
|
|
|
1006
|
|
|
1007 return make_pgresult (lisp_pgresult);
|
|
|
1008 }
|
|
|
1009
|
|
|
1010 DEFUN ("pq-result-status", Fpq_result_status, 1, 1, 0, /*
|
|
|
1011 Return result status of the query.
|
|
|
1012 */
|
|
|
1013 (result))
|
|
|
1014 {
|
|
|
1015 PGresult *R;
|
|
|
1016 ExecStatusType est;
|
|
|
1017
|
|
|
1018 CHECK_PGRESULT (result);
|
|
|
1019 R = (XPGRESULT (result))->pgresult;
|
|
|
1020 PUKE_IF_NULL (R);
|
|
|
1021
|
|
|
1022 switch ((est = PQresultStatus (R))) {
|
|
|
1023 case PGRES_EMPTY_QUERY: return Qpgres_empty_query;
|
|
|
1024 case PGRES_COMMAND_OK: return Qpgres_command_ok;
|
|
|
1025 case PGRES_TUPLES_OK: return Qpgres_tuples_ok;
|
|
|
1026 case PGRES_COPY_OUT: return Qpgres_copy_out;
|
|
|
1027 case PGRES_COPY_IN: return Qpgres_copy_in;
|
|
|
1028 case PGRES_BAD_RESPONSE: return Qpgres_bad_response;
|
|
|
1029 case PGRES_NONFATAL_ERROR: return Qpgres_nonfatal_error;
|
|
|
1030 case PGRES_FATAL_ERROR: return Qpgres_fatal_error;
|
|
|
1031 default:
|
|
|
1032 /* they've added a new field we don't know about */
|
|
|
1033 error ("Help! Unknown exec status code %08x from backend!", est);
|
|
|
1034 }
|
|
|
1035 }
|
|
|
1036
|
|
|
1037 DEFUN ("pq-res-status", Fpq_res_status, 1, 1, 0, /*
|
|
|
1038 Return stringified result status of the query.
|
|
|
1039 */
|
|
|
1040 (result))
|
|
|
1041 {
|
|
|
1042 PGresult *R;
|
|
|
1043
|
|
|
1044 CHECK_PGRESULT (result);
|
|
|
1045 R = (XPGRESULT (result))->pgresult;
|
|
|
1046 PUKE_IF_NULL (R);
|
|
|
1047
|
|
|
1048 return build_ext_string (PQresStatus (PQresultStatus (R)), PG_OS_CODING);
|
|
|
1049 }
|
|
|
1050
|
|
|
1051 /* Sundry PGresult accessor functions */
|
|
|
1052 DEFUN ("pq-result-error-message", Fpq_result_error_message, 1, 1, 0, /*
|
|
|
1053 Return last message associated with the query.
|
|
|
1054 */
|
|
|
1055 (result))
|
|
|
1056 {
|
|
|
1057 PGresult *R;
|
|
|
1058
|
|
|
1059 CHECK_PGRESULT (result);
|
|
|
1060 R = (XPGRESULT (result))->pgresult;
|
|
|
1061 PUKE_IF_NULL (R);
|
|
|
1062
|
|
|
1063 return build_ext_string (PQresultErrorMessage (R), PG_OS_CODING);
|
|
|
1064 }
|
|
|
1065
|
|
|
1066 DEFUN ("pq-ntuples", Fpq_ntuples, 1, 1, 0, /*
|
|
|
1067 Return the number of tuples (instances) in the query result.
|
|
|
1068 */
|
|
|
1069 (result))
|
|
|
1070 {
|
|
|
1071 PGresult *R;
|
|
|
1072
|
|
|
1073 CHECK_PGRESULT (result);
|
|
|
1074 R = (XPGRESULT (result))->pgresult;
|
|
|
1075 PUKE_IF_NULL (R);
|
|
|
1076
|
|
|
1077 return make_int (PQntuples (R));
|
|
|
1078 }
|
|
|
1079
|
|
|
1080 DEFUN ("pq-nfields", Fpq_nfields, 1, 1, 0, /*
|
|
|
1081 Return the number of fields (attributes) in each tuple of the query result.
|
|
|
1082 */
|
|
|
1083 (result))
|
|
|
1084 {
|
|
|
1085 PGresult *R;
|
|
|
1086
|
|
|
1087 CHECK_PGRESULT (result);
|
|
|
1088 R = (XPGRESULT (result))->pgresult;
|
|
|
1089 PUKE_IF_NULL (R);
|
|
|
1090
|
|
|
1091 return make_int (PQnfields (R));
|
|
|
1092 }
|
|
|
1093
|
|
|
1094 DEFUN ("pq-binary-tuples", Fpq_binary_tuples, 1, 1, 0, /*
|
|
|
1095 Return t if the query result contains binary data, nil otherwise.
|
|
|
1096 */
|
|
|
1097 (result))
|
|
|
1098 {
|
|
|
1099 PGresult *R;
|
|
|
1100
|
|
|
1101 CHECK_PGRESULT (result);
|
|
|
1102 R = (XPGRESULT (result))->pgresult;
|
|
|
1103 PUKE_IF_NULL (R);
|
|
|
1104
|
|
|
1105 return (PQbinaryTuples (R)) ? Qt : Qnil;
|
|
|
1106 }
|
|
|
1107
|
|
|
1108 DEFUN ("pq-fname", Fpq_fname, 2, 2, 0, /*
|
|
|
1109 Return the field (attribute) name associated with the given field index.
|
|
|
1110 Field indices start at 0.
|
|
|
1111 */
|
|
|
1112 (result, field_index))
|
|
|
1113 {
|
|
|
1114 PGresult *R;
|
|
|
1115
|
|
|
1116 CHECK_PGRESULT (result);
|
|
|
1117 CHECK_INT (field_index);
|
|
|
1118 R = (XPGRESULT (result))->pgresult;
|
|
|
1119 PUKE_IF_NULL (R);
|
|
|
1120
|
|
|
1121 return build_ext_string (PQfname (R, XINT (field_index)), PG_OS_CODING);
|
|
|
1122 }
|
|
|
1123
|
|
|
1124 DEFUN ("pq-fnumber", Fpq_fnumber, 2, 2, 0, /*
|
|
|
1125 Return the number of fields (attributes) in each tuple of the query result.
|
|
|
1126 */
|
|
|
1127 (result, field_name))
|
|
|
1128 {
|
|
|
1129 PGresult *R;
|
|
|
1130 char *c_field_name;
|
|
|
1131
|
|
|
1132 CHECK_PGRESULT (result);
|
|
|
1133 CHECK_STRING (field_name);
|
|
|
1134 R = (XPGRESULT (result))->pgresult;
|
|
|
1135 PUKE_IF_NULL (R);
|
|
|
1136
|
|
|
1137 TO_EXTERNAL_FORMAT (LISP_STRING, field_name,
|
|
|
1138 C_STRING_ALLOCA, c_field_name, Qnative);
|
|
|
1139
|
|
|
1140 return make_int (PQfnumber (R, c_field_name));
|
|
|
1141 }
|
|
|
1142
|
|
|
1143 DEFUN ("pq-ftype", Fpq_ftype, 2, 2, 0, /*
|
|
|
1144 Return the field type associated with the given field index.
|
|
|
1145 The integer returned is the internal coding of the type. Field indices
|
|
|
1146 start at 0.
|
|
|
1147 */
|
|
|
1148 (result, field_num))
|
|
|
1149 {
|
|
|
1150 PGresult *R;
|
|
|
1151
|
|
|
1152 CHECK_PGRESULT (result);
|
|
|
1153 CHECK_INT (field_num);
|
|
|
1154 R = (XPGRESULT (result))->pgresult;
|
|
|
1155 PUKE_IF_NULL (R);
|
|
|
1156
|
|
|
1157 return make_int (PQftype (R, XINT (field_num)));
|
|
|
1158 }
|
|
|
1159
|
|
|
1160 DEFUN ("pq-fsize", Fpq_fsize, 2, 2, 0, /*
|
|
|
1161 Return the field size in bytes associated with the given field index.
|
|
|
1162 Field indices start at 0.
|
|
|
1163 */
|
|
|
1164 (result, field_index))
|
|
|
1165 {
|
|
|
1166 PGresult *R;
|
|
|
1167
|
|
|
1168 CHECK_PGRESULT (result);
|
|
|
1169 CHECK_INT (field_index);
|
|
|
1170 R = (XPGRESULT (result))->pgresult;
|
|
|
1171 PUKE_IF_NULL (R);
|
|
|
1172
|
|
|
1173 return make_int (PQftype (R, XINT (field_index)));
|
|
|
1174 }
|
|
|
1175
|
|
|
1176 DEFUN ("pq-fmod", Fpq_fmod, 2, 2, 0, /*
|
|
|
1177 Return the type modifier associated with a field.
|
|
|
1178 Field indices start at 0.
|
|
|
1179 */
|
|
|
1180 (result, field_index))
|
|
|
1181 {
|
|
|
1182 PGresult *R;
|
|
|
1183
|
|
|
1184 CHECK_PGRESULT (result);
|
|
|
1185 CHECK_INT (field_index);
|
|
|
1186 R = (XPGRESULT (result))->pgresult;
|
|
|
1187 PUKE_IF_NULL (R);
|
|
|
1188
|
|
|
1189 return make_int (PQfmod (R, XINT (field_index)));
|
|
|
1190 }
|
|
|
1191
|
|
|
1192 DEFUN ("pq-get-value", Fpq_get_value, 3, 3, 0, /*
|
|
|
1193 Return a single field (attribute) value of one tuple of a PGresult.
|
|
|
1194 Tuple and field indices start at 0.
|
|
|
1195 */
|
|
|
1196 (result, tup_num, field_num))
|
|
|
1197 {
|
|
|
1198 PGresult *R;
|
|
|
1199
|
|
|
1200 CHECK_PGRESULT (result);
|
|
|
1201 CHECK_INT (tup_num);
|
|
|
1202 CHECK_INT (field_num);
|
|
|
1203 R = (XPGRESULT (result))->pgresult;
|
|
|
1204 PUKE_IF_NULL (R);
|
|
|
1205
|
|
|
1206 return build_ext_string (PQgetvalue (R, XINT (tup_num), XINT (field_num)),
|
|
|
1207 PG_OS_CODING);
|
|
|
1208 }
|
|
|
1209
|
|
|
1210 DEFUN ("pq-get-length", Fpq_get_length, 3, 3, 0, /*
|
|
|
1211 Returns the length of a field value in bytes.
|
|
|
1212 If result is binary, i.e. a result of a binary portal, then the
|
|
|
1213 length returned does NOT include the size field of the varlena. (The
|
|
|
1214 data returned by PQgetvalue doesn't either.)
|
|
|
1215 */
|
|
|
1216 (result, tup_num, field_num))
|
|
|
1217 {
|
|
|
1218 PGresult *R;
|
|
|
1219
|
|
|
1220 CHECK_PGRESULT (result);
|
|
|
1221 CHECK_INT (tup_num);
|
|
|
1222 CHECK_INT (field_num);
|
|
|
1223 R = (XPGRESULT (result))->pgresult;
|
|
|
1224 PUKE_IF_NULL (R);
|
|
|
1225
|
|
|
1226 return make_int (PQgetlength (R, XINT (tup_num), XINT (field_num)));
|
|
|
1227 }
|
|
|
1228
|
|
|
1229 DEFUN ("pq-get-is-null", Fpq_get_is_null, 3, 3, 0, /*
|
|
|
1230 Returns the null status of a field value.
|
|
|
1231 */
|
|
|
1232 (result, tup_num, field_num))
|
|
|
1233 {
|
|
|
1234 PGresult *R;
|
|
|
1235
|
|
|
1236 CHECK_PGRESULT (result);
|
|
|
1237 CHECK_INT (tup_num);
|
|
|
1238 CHECK_INT (field_num);
|
|
|
1239 R = (XPGRESULT (result))->pgresult;
|
|
|
1240 PUKE_IF_NULL (R);
|
|
|
1241
|
|
|
1242 return PQgetisnull (R, XINT (tup_num), XINT (field_num)) ? Qt : Qnil;
|
|
|
1243 }
|
|
|
1244
|
|
|
1245 DEFUN ("pq-cmd-status", Fpq_cmd_status, 1, 1, 0, /*
|
|
|
1246 Returns the command status string from the SQL command that generated the result.
|
|
|
1247 */
|
|
|
1248 (result))
|
|
|
1249 {
|
|
|
1250 PGresult *R;
|
|
|
1251
|
|
|
1252 CHECK_PGRESULT (result);
|
|
|
1253 R = (XPGRESULT (result))->pgresult;
|
|
|
1254 PUKE_IF_NULL (R);
|
|
|
1255
|
|
|
1256 return build_ext_string (PQcmdStatus (R), PG_OS_CODING);
|
|
|
1257 }
|
|
|
1258
|
|
|
1259 DEFUN ("pq-cmd-tuples", Fpq_cmd_tuples, 1, 1, 0, /*
|
|
|
1260 Returns the number of rows affected by the SQL command
|
|
|
1261 */
|
|
|
1262 (result))
|
|
|
1263 {
|
|
|
1264 PGresult *R;
|
|
|
1265
|
|
|
1266 CHECK_PGRESULT (result);
|
|
|
1267 R = (XPGRESULT (result))->pgresult;
|
|
|
1268 PUKE_IF_NULL (R);
|
|
|
1269
|
|
|
1270 return build_ext_string (PQcmdTuples (R), PG_OS_CODING);
|
|
|
1271 }
|
|
|
1272
|
|
|
1273 DEFUN ("pq-oid-value", Fpq_oid_value, 1, 1, 0, /*
|
|
|
1274 Returns the object id of the tuple inserted.
|
|
|
1275 */
|
|
|
1276 (result))
|
|
|
1277 {
|
|
|
1278 PGresult *R;
|
|
|
1279
|
|
|
1280 CHECK_PGRESULT (result);
|
|
|
1281 R = (XPGRESULT (result))->pgresult;
|
|
|
1282 PUKE_IF_NULL (R);
|
|
|
1283
|
|
|
1284 #ifdef HAVE_POSTGRESQLV7
|
|
|
1285 return make_int (PQoidValue (R));
|
|
|
1286 #else
|
|
|
1287 /* Use the old interface */
|
|
|
1288 return make_int (atoi (PQoidStatus (R)));
|
|
|
1289 #endif
|
|
|
1290 }
|
|
|
1291
|
|
|
1292 #ifdef HAVE_POSTGRESQLV7
|
|
|
1293 DEFUN ("pq-set-nonblocking", Fpq_set_nonblocking, 2, 2, 0, /*
|
|
|
1294 Sets the PGconn's database connection non-blocking if the arg is TRUE
|
|
|
1295 or makes it non-blocking if the arg is FALSE, this will not protect
|
|
|
1296 you from PQexec(), you'll only be safe when using the non-blocking API.
|
|
|
1297
|
|
|
1298 Needs to be called only on a connected database connection.
|
|
|
1299 */
|
|
|
1300 (conn, arg))
|
|
|
1301 {
|
|
|
1302 PGconn *P;
|
|
|
1303
|
|
|
1304 CHECK_PGCONN (conn);
|
|
|
1305 P = (XPGCONN (conn))->pgconn;
|
|
|
1306 CHECK_LIVE_CONNECTION (P);
|
|
|
1307
|
|
|
1308 return make_int (PQsetnonblocking (P, !NILP (arg)));
|
|
|
1309 }
|
|
|
1310
|
|
|
1311 DEFUN ("pq-is-nonblocking", Fpq_is_nonblocking, 1, 1, 0, /*
|
|
|
1312 Return the blocking status of the database connection
|
|
|
1313 */
|
|
|
1314 (conn))
|
|
|
1315 {
|
|
|
1316 PGconn *P;
|
|
|
1317
|
|
|
1318 CHECK_PGCONN (conn);
|
|
|
1319 P = (XPGCONN (conn))->pgconn;
|
|
|
1320 CHECK_LIVE_CONNECTION (P);
|
|
|
1321
|
|
|
1322 return PQisnonblocking (P) ? Qt : Qnil;
|
|
|
1323 }
|
|
|
1324
|
|
|
1325 DEFUN ("pq-flush", Fpq_flush, 1, 1, 0, /*
|
|
|
1326 Force the write buffer to be written (or at least try)
|
|
|
1327 */
|
|
|
1328 (conn))
|
|
|
1329 {
|
|
|
1330 PGconn *P;
|
|
|
1331
|
|
|
1332 CHECK_PGCONN (conn);
|
|
|
1333 P = (XPGCONN (conn))->pgconn;
|
|
|
1334 CHECK_LIVE_CONNECTION (P);
|
|
|
1335
|
|
|
1336 return make_int (PQflush (P));
|
|
|
1337 }
|
|
|
1338 #endif
|
|
|
1339
|
|
|
1340 DEFUN ("pq-notifies", Fpq_notifies, 1, 1, 0, /*
|
|
|
1341 Return the latest async notification that has not yet been handled.
|
|
|
1342 If there has been a notification, then a list of two elements will be returned.
|
|
|
1343 The first element contains the relation name being notified, the second
|
|
|
1344 element contains the backend process ID number. nil is returned if there
|
|
|
1345 aren't any notifications to process.
|
|
|
1346 */
|
|
|
1347 (conn))
|
|
|
1348 {
|
|
|
1349 /* This function cannot GC */
|
|
|
1350 PGconn *P;
|
|
|
1351 PGnotify *PGN;
|
|
|
1352
|
|
|
1353 CHECK_PGCONN (conn);
|
|
|
1354 P = (XPGCONN (conn))->pgconn;
|
|
|
1355 CHECK_LIVE_CONNECTION (P);
|
|
|
1356
|
|
|
1357 PGN = PQnotifies (P);
|
|
|
1358 if (!PGN)
|
|
|
1359 return Qnil;
|
|
|
1360 else
|
|
|
1361 {
|
|
|
1362 Lisp_Object temp;
|
|
|
1363
|
|
|
1364 temp = list2 (build_ext_string (PGN->relname, PG_OS_CODING), make_int (PGN->be_pid));
|
|
|
1365 free ((void *)PGN);
|
|
|
1366 return temp;
|
|
|
1367 }
|
|
|
1368 }
|
|
|
1369
|
|
|
1370 #if defined (HAVE_POSTGRESQLV7) && defined(MULE)
|
|
|
1371 DEFUN ("pq-env-2-encoding", Fpq_env_2_encoding, 0, 0, 0, /*
|
|
|
1372 Get encoding id from environment variable PGCLIENTENCODING.
|
|
|
1373 */
|
|
|
1374 ())
|
|
|
1375 {
|
|
|
1376 return make_int (PQenv2encoding ());
|
|
|
1377 }
|
|
|
1378 #endif /* MULE */
|
|
|
1379
|
|
|
1380 DEFUN ("pq-lo-import", Fpq_lo_import, 2, 2, 0, /*
|
|
|
1381 */
|
|
|
1382 (conn, filename))
|
|
|
1383 {
|
|
|
1384 PGconn *P;
|
|
|
1385 char *c_filename;
|
|
|
1386
|
|
|
1387 CHECK_PGCONN (conn);
|
|
|
1388 CHECK_STRING (filename);
|
|
|
1389
|
|
|
1390 P = (XPGCONN (conn))->pgconn;
|
|
|
1391 CHECK_LIVE_CONNECTION (P);
|
|
|
1392
|
|
|
1393 TO_EXTERNAL_FORMAT (LISP_STRING, filename,
|
|
|
1394 C_STRING_ALLOCA, c_filename,
|
|
|
1395 Qfile_name);
|
|
|
1396
|
|
|
1397 return make_int ((int)lo_import (P, c_filename));
|
|
|
1398 }
|
|
|
1399
|
|
|
1400 DEFUN ("pq-lo-export", Fpq_lo_export, 3, 3, 0, /*
|
|
|
1401 */
|
|
|
1402 (conn, oid, filename))
|
|
|
1403 {
|
|
|
1404 PGconn *P;
|
|
|
1405 char *c_filename;
|
|
|
1406
|
|
|
1407 CHECK_PGCONN (conn);
|
|
|
1408 CHECK_INT (oid);
|
|
|
1409 CHECK_STRING (filename);
|
|
|
1410
|
|
|
1411 P = (XPGCONN (conn))->pgconn;
|
|
|
1412 CHECK_LIVE_CONNECTION (P);
|
|
|
1413
|
|
|
1414 TO_EXTERNAL_FORMAT (LISP_STRING, filename,
|
|
|
1415 C_STRING_ALLOCA, c_filename, Qfile_name);
|
|
|
1416
|
|
|
1417 return make_int ((int)lo_export (P, XINT (oid), c_filename));
|
|
|
1418 }
|
|
|
1419
|
|
|
1420 DEFUN ("pq-make-empty-pgresult", Fpq_make_empty_pgresult, 2, 2, 0, /*
|
|
|
1421 Make an empty PGresult object with the given status.
|
|
|
1422 */
|
|
|
1423 (conn, status))
|
|
|
1424 {
|
|
|
1425 PGconn *P;
|
|
|
1426 Lisp_PGresult *lpgr;
|
|
|
1427 PGresult *R;
|
|
|
1428 ExecStatusType est;
|
|
|
1429
|
|
|
1430 CHECK_PGCONN (conn);
|
|
|
1431 P = (XPGCONN (conn))->pgconn;
|
|
|
1432 CHECK_LIVE_CONNECTION (P); /* needed here? */
|
|
|
1433
|
|
|
1434 if (EQ (status, Qpgres_empty_query)) est = PGRES_EMPTY_QUERY;
|
|
|
1435 else if (EQ (status, Qpgres_command_ok)) est = PGRES_COMMAND_OK;
|
|
|
1436 else if (EQ (status, Qpgres_tuples_ok)) est = PGRES_TUPLES_OK;
|
|
|
1437 else if (EQ (status, Qpgres_copy_out)) est = PGRES_COPY_OUT;
|
|
|
1438 else if (EQ (status, Qpgres_copy_in)) est = PGRES_COPY_IN;
|
|
|
1439 else if (EQ (status, Qpgres_bad_response)) est = PGRES_BAD_RESPONSE;
|
|
|
1440 else if (EQ (status, Qpgres_nonfatal_error)) est = PGRES_NONFATAL_ERROR;
|
|
|
1441 else if (EQ (status, Qpgres_fatal_error)) est = PGRES_FATAL_ERROR;
|
|
|
1442 else signal_simple_error ("bad status symbol", status);
|
|
|
1443
|
|
|
1444 R = PQmakeEmptyPGresult (P, est);
|
|
|
1445 if (!R) error ("out of memory?");
|
|
|
1446
|
|
|
1447 lpgr = allocate_pgresult ();
|
|
|
1448 lpgr->pgresult = R;
|
|
|
1449
|
|
|
1450 return make_pgresult (lpgr);
|
|
|
1451 }
|
|
|
1452
|
|
|
1453 DEFUN ("pq-get-line", Fpq_get_line, 1, 1, 0, /*
|
|
|
1454 Retrieve a line from server in copy in operation.
|
|
|
1455 The return value is a dotted pair where the cons cell is an integer code:
|
|
|
1456 -1: Copying is complete
|
|
|
1457 0: A record is complete
|
|
|
1458 1: A record is incomplete, it will be continued in the next `pq-get-line'
|
|
|
1459 operation.
|
|
|
1460 and the cdr cell is returned string data.
|
|
|
1461
|
|
|
1462 The copy operation is complete when the value `\.' (backslash dot) is
|
|
|
1463 returned.
|
|
|
1464 */
|
|
|
1465 (conn))
|
|
|
1466 {
|
|
|
1467 char buffer[BLCKSZ]; /* size of a Postgres disk block */
|
|
|
1468 PGconn *P;
|
|
|
1469 int ret;
|
|
|
1470
|
|
|
1471 CHECK_PGCONN (conn);
|
|
|
1472 P = (XPGCONN (conn))->pgconn;
|
|
|
1473 CHECK_LIVE_CONNECTION (P);
|
|
|
1474
|
|
|
1475 ret = PQgetline (P, buffer, sizeof (buffer));
|
|
|
1476
|
|
|
1477 return Fcons (make_int (ret), build_ext_string (buffer, PG_OS_CODING));
|
|
|
1478 }
|
|
|
1479
|
|
|
1480 DEFUN ("pq-put-line", Fpq_put_line, 2, 2, 0, /*
|
|
|
1481 Send a line to the server in copy out operation.
|
|
|
1482
|
|
|
1483 Returns t if the operation succeeded, nil otherwise.
|
|
|
1484 */
|
|
|
1485 (conn, string))
|
|
|
1486 {
|
|
|
1487 PGconn *P;
|
|
|
1488 char *c_string;
|
|
|
1489
|
|
|
1490 CHECK_PGCONN (conn);
|
|
|
1491 CHECK_STRING (string);
|
|
|
1492
|
|
|
1493 P = (XPGCONN (conn))->pgconn;
|
|
|
1494 CHECK_LIVE_CONNECTION (P);
|
|
|
1495 TO_EXTERNAL_FORMAT (LISP_STRING, string,
|
|
|
1496 C_STRING_ALLOCA, c_string, Qnative);
|
|
|
1497
|
|
|
1498 return !PQputline (P, c_string) ? Qt : Qnil;
|
|
|
1499 }
|
|
|
1500
|
|
|
1501 DEFUN ("pq-get-line-async", Fpq_get_line_async, 1, 1, 0, /*
|
|
|
1502 Get a line from the server in copy in operation asynchronously.
|
|
|
1503
|
|
|
1504 This routine is for applications that want to do "COPY <rel> to stdout"
|
|
|
1505 asynchronously, that is without blocking. Having issued the COPY command
|
|
|
1506 and gotten a PGRES_COPY_OUT response, the app should call PQconsumeInput
|
|
|
1507 and this routine until the end-of-data signal is detected. Unlike
|
|
|
1508 PQgetline, this routine takes responsibility for detecting end-of-data.
|
|
|
1509
|
|
|
1510 On each call, PQgetlineAsync will return data if a complete newline-
|
|
|
1511 terminated data line is available in libpq's input buffer, or if the
|
|
|
1512 incoming data line is too long to fit in the buffer offered by the caller.
|
|
|
1513 Otherwise, no data is returned until the rest of the line arrives.
|
|
|
1514
|
|
|
1515 If -1 is returned, the end-of-data signal has been recognized (and removed
|
|
|
1516 from libpq's input buffer). The caller *must* next call PQendcopy and
|
|
|
1517 then return to normal processing.
|
|
|
1518
|
|
|
1519 RETURNS:
|
|
|
1520 -1 if the end-of-copy-data marker has been recognized
|
|
|
1521 0 if no data is available
|
|
|
1522 >0 the number of bytes returned.
|
|
|
1523 The data returned will not extend beyond a newline character. If possible
|
|
|
1524 a whole line will be returned at one time. But if the buffer offered by
|
|
|
1525 the caller is too small to hold a line sent by the backend, then a partial
|
|
|
1526 data line will be returned. This can be detected by testing whether the
|
|
|
1527 last returned byte is '\n' or not.
|
|
|
1528 The returned string is *not* null-terminated.
|
|
|
1529 */
|
|
|
1530 (conn))
|
|
|
1531 {
|
|
|
1532 PGconn *P;
|
|
|
1533 char buffer[BLCKSZ];
|
|
|
1534 int ret;
|
|
|
1535
|
|
|
1536 CHECK_PGCONN (conn);
|
|
|
1537
|
|
|
1538 P = (XPGCONN (conn))->pgconn;
|
|
|
1539 CHECK_LIVE_CONNECTION (P);
|
|
|
1540
|
|
|
1541 ret = PQgetlineAsync (P, buffer, sizeof (buffer));
|
|
|
1542
|
|
|
1543 if (ret == -1) return Qt; /* done! */
|
|
|
1544 else if (!ret) return Qnil; /* no data yet */
|
|
|
1545 else return Fcons (make_int (ret),
|
|
|
1546 make_ext_string (buffer, ret, PG_OS_CODING));
|
|
|
1547 }
|
|
|
1548
|
|
|
1549 DEFUN ("pq-put-nbytes", Fpq_put_nbytes, 2, 2, 0, /*
|
|
|
1550 Asynchronous copy out.
|
|
|
1551 */
|
|
|
1552 (conn, data))
|
|
|
1553 {
|
|
|
1554 /* NULs are not allowed. I don't think this matters at this time. */
|
|
|
1555 PGconn *P;
|
|
|
1556 char *c_data;
|
|
|
1557
|
|
|
1558 CHECK_PGCONN (conn);
|
|
|
1559 CHECK_STRING (data);
|
|
|
1560
|
|
|
1561 P = (XPGCONN (conn))->pgconn;
|
|
|
1562 CHECK_LIVE_CONNECTION (P);
|
|
|
1563 TO_EXTERNAL_FORMAT (LISP_STRING, data,
|
|
|
1564 C_STRING_ALLOCA, c_data, Qnative);
|
|
|
1565
|
|
|
1566 return !PQputnbytes (P, c_data, strlen (c_data)) ? Qt : Qnil;
|
|
|
1567 }
|
|
|
1568
|
|
|
1569 DEFUN ("pq-end-copy", Fpq_end_copy, 1, 1, 0, /*
|
|
|
1570 End a copying operation.
|
|
|
1571 */
|
|
|
1572 (conn))
|
|
|
1573 {
|
|
|
1574 PGconn *P;
|
|
|
1575
|
|
|
1576 CHECK_PGCONN (conn);
|
|
|
1577 P = (XPGCONN (conn))->pgconn;
|
|
|
1578 CHECK_LIVE_CONNECTION (P);
|
|
|
1579
|
|
|
1580 return PQendcopy (P) ? Qt : Qnil;
|
|
|
1581 }
|
|
|
1582
|
|
|
1583 void
|
|
|
1584 syms_of_postgresql(void)
|
|
|
1585 {
|
|
|
1586 #ifndef RUNNING_XEMACS_21_1
|
|
|
1587 INIT_LRECORD_IMPLEMENTATION (pgconn);
|
|
|
1588 INIT_LRECORD_IMPLEMENTATION (pgresult);
|
|
|
1589 #endif
|
|
|
1590 defsymbol (&Qpostgresql, "postgresql");
|
|
|
1591
|
|
|
1592 /* opaque exported types */
|
|
|
1593 defsymbol (&Qpgconnp, "pgconnp");
|
|
|
1594 defsymbol (&Qpgresultp, "pgresultp");
|
|
|
1595
|
|
|
1596 /* connection status types */
|
|
|
1597 defsymbol (&Qpg_connection_ok, "pg::connection-ok");
|
|
|
1598 defsymbol (&Qpg_connection_bad, "pg::connection-bad");
|
|
|
1599 defsymbol (&Qpg_connection_started, "pg::connection-started");
|
|
|
1600 defsymbol (&Qpg_connection_made, "pg::connection-made");
|
|
|
1601 defsymbol (&Qpg_connection_awaiting_response, "pg::connection-awaiting-response");
|
|
|
1602 defsymbol (&Qpg_connection_auth_ok, "pg::connection-auth-ok");
|
|
|
1603 defsymbol (&Qpg_connection_setenv, "pg::connection-setenv");
|
|
|
1604
|
|
|
1605 /* Fields of PGconn */
|
|
|
1606 defsymbol (&Qpqdb, "pq::db");
|
|
|
1607 defsymbol (&Qpquser, "pq::user");
|
|
|
1608 defsymbol (&Qpqpass, "pq::pass");
|
|
|
1609 defsymbol (&Qpqhost, "pq::host");
|
|
|
1610 defsymbol (&Qpqport, "pq::port");
|
|
|
1611 defsymbol (&Qpqtty, "pq::tty");
|
|
|
1612 defsymbol (&Qpqoptions, "pq::options");
|
|
|
1613 defsymbol (&Qpqstatus, "pq::status");
|
|
|
1614 defsymbol (&Qpqerrormessage, "pq::error-message");
|
|
|
1615 defsymbol (&Qpqbackendpid, "pq::backend-pid");
|
|
|
1616
|
|
|
1617 /* Query status results */
|
|
|
1618 defsymbol (&Qpgres_empty_query, "pgres::empty-query");
|
|
|
1619 defsymbol (&Qpgres_command_ok, "pgres::command-ok");
|
|
|
1620 defsymbol (&Qpgres_tuples_ok, "pgres::tuples-ok");
|
|
|
1621 defsymbol (&Qpgres_copy_out, "pgres::copy-out");
|
|
|
1622 defsymbol (&Qpgres_copy_in, "pgres::copy-in");
|
|
|
1623 defsymbol (&Qpgres_bad_response, "pgres::bad-response");
|
|
|
1624 defsymbol (&Qpgres_nonfatal_error, "pgres::nonfatal-error");
|
|
|
1625 defsymbol (&Qpgres_fatal_error, "pgres::fatal-error");
|
|
|
1626
|
|
|
1627 /* Poll status results */
|
|
|
1628 defsymbol (&Qpgres_polling_failed, "pgres::polling-failed");
|
|
|
1629 defsymbol (&Qpgres_polling_reading, "pgres::polling-reading");
|
|
|
1630 defsymbol (&Qpgres_polling_writing, "pgres::polling-writing");
|
|
|
1631 defsymbol (&Qpgres_polling_ok, "pgres::polling-ok");
|
|
|
1632 defsymbol (&Qpgres_polling_active, "pgres::polling-active");
|
|
|
1633
|
|
|
1634 #ifdef HAVE_POSTGRESQLV7
|
|
|
1635 DEFSUBR (Fpq_connect_start);
|
|
|
1636 DEFSUBR (Fpq_connect_poll);
|
|
|
1637 #ifdef MULE
|
|
|
1638 DEFSUBR (Fpq_client_encoding);
|
|
|
1639 DEFSUBR (Fpq_set_client_encoding);
|
|
|
1640 #endif /* MULE */
|
|
|
1641 #endif /* HAVE_POSTGRESQLV7 */
|
|
|
1642 DEFSUBR (Fpq_conn_defaults);
|
|
|
1643 DEFSUBR (Fpq_connectdb);
|
|
|
1644 DEFSUBR (Fpq_finish);
|
|
|
1645 DEFSUBR (Fpq_clear);
|
|
|
1646 DEFSUBR (Fpq_is_busy);
|
|
|
1647 DEFSUBR (Fpq_consume_input);
|
|
|
1648
|
|
|
1649 DEFSUBR (Fpq_reset);
|
|
|
1650 #ifdef HAVE_POSTGRESQLV7
|
|
|
1651 DEFSUBR (Fpq_reset_start);
|
|
|
1652 DEFSUBR (Fpq_reset_poll);
|
|
|
1653 #endif
|
|
|
1654 DEFSUBR (Fpq_request_cancel);
|
|
|
1655 DEFSUBR (Fpq_pgconn);
|
|
|
1656
|
|
|
1657 DEFSUBR (Fpq_exec);
|
|
|
1658 DEFSUBR (Fpq_send_query);
|
|
|
1659 DEFSUBR (Fpq_get_result);
|
|
|
1660 DEFSUBR (Fpq_result_status);
|
|
|
1661 DEFSUBR (Fpq_res_status);
|
|
|
1662 DEFSUBR (Fpq_result_error_message);
|
|
|
1663 DEFSUBR (Fpq_ntuples);
|
|
|
1664 DEFSUBR (Fpq_nfields);
|
|
|
1665 DEFSUBR (Fpq_binary_tuples);
|
|
|
1666 DEFSUBR (Fpq_fname);
|
|
|
1667 DEFSUBR (Fpq_fnumber);
|
|
|
1668 DEFSUBR (Fpq_ftype);
|
|
|
1669 DEFSUBR (Fpq_fsize);
|
|
|
1670 DEFSUBR (Fpq_fmod);
|
|
|
1671 /***/
|
|
|
1672 DEFSUBR (Fpq_get_value);
|
|
|
1673 DEFSUBR (Fpq_get_length);
|
|
|
1674 DEFSUBR (Fpq_get_is_null);
|
|
|
1675 DEFSUBR (Fpq_cmd_status);
|
|
|
1676 DEFSUBR (Fpq_cmd_tuples);
|
|
|
1677 DEFSUBR (Fpq_oid_value);
|
|
|
1678
|
|
|
1679 #ifdef HAVE_POSTGRESQLV7
|
|
|
1680 DEFSUBR (Fpq_set_nonblocking);
|
|
|
1681 DEFSUBR (Fpq_is_nonblocking);
|
|
|
1682 DEFSUBR (Fpq_flush);
|
|
|
1683 #endif
|
|
|
1684 DEFSUBR (Fpq_notifies);
|
|
|
1685
|
|
|
1686 #if defined (HAVE_POSTGRESQLV7) && defined(MULE)
|
|
|
1687 DEFSUBR (Fpq_env_2_encoding);
|
|
|
1688 #endif
|
|
|
1689
|
|
|
1690 DEFSUBR (Fpq_lo_import);
|
|
|
1691 DEFSUBR (Fpq_lo_export);
|
|
|
1692
|
|
|
1693 DEFSUBR (Fpq_make_empty_pgresult);
|
|
|
1694
|
|
|
1695 /* copy in/out functions */
|
|
|
1696 DEFSUBR (Fpq_get_line);
|
|
|
1697 DEFSUBR (Fpq_put_line);
|
|
|
1698 DEFSUBR (Fpq_get_line_async);
|
|
|
1699 DEFSUBR (Fpq_put_nbytes);
|
|
|
1700 DEFSUBR (Fpq_end_copy);
|
|
|
1701 }
|
|
|
1702
|
|
|
1703 void
|
|
|
1704 vars_of_postgresql(void)
|
|
|
1705 {
|
|
|
1706 char *p;
|
|
|
1707
|
|
|
1708 Fprovide (Qpostgresql);
|
|
|
1709 #ifdef HAVE_POSTGRESQLV7
|
|
|
1710 Fprovide (intern ("postgresqlv7"));
|
|
|
1711 #endif
|
|
|
1712 #ifndef RUNNING_XEMACS_21_1
|
|
|
1713 Vpg_coding_system = Qnative;
|
|
|
1714 DEFVAR_LISP ("pg-coding-system", &Vpg_coding_system /*
|
|
|
1715 Default Postgres client coding system.
|
|
|
1716 */ );
|
|
|
1717 #endif
|
|
|
1718
|
|
|
1719 if ((p = getenv ("PGHOST")))
|
|
|
1720 {
|
|
|
1721 VXPGHOST = build_ext_string (p, PG_OS_CODING);
|
|
|
1722 }
|
|
|
1723 else
|
|
|
1724 {
|
|
|
1725 VXPGHOST = Qnil;
|
|
|
1726 }
|
|
|
1727 DEFVAR_LISP ("pg:host", &VXPGHOST /*
|
|
|
1728 Default PostgreSQL server name.
|
|
|
1729 If not set, the server running on the local host is used. The
|
|
|
1730 initial value is set from the PGHOST environment variable.
|
|
|
1731 */ );
|
|
|
1732
|
|
|
1733 if ((p = getenv ("PGUSER")))
|
|
|
1734 {
|
|
|
1735 VXPGUSER = build_ext_string (p, PG_OS_CODING);
|
|
|
1736 }
|
|
|
1737 else
|
|
|
1738 {
|
|
|
1739 VXPGUSER = Qnil;
|
|
|
1740 }
|
|
|
1741 DEFVAR_LISP ("pg:user", &VXPGUSER /*
|
|
|
1742 Default PostgreSQL user name.
|
|
|
1743 This value is used when connecting to a database for authentication.
|
|
|
1744 The initial value is set from the PGUSER environment variable.
|
|
|
1745 */ );
|
|
|
1746
|
|
|
1747 if ((p = getenv ("PGOPTIONS")))
|
|
|
1748 {
|
|
|
1749 VXPGOPTIONS = build_ext_string (p, PG_OS_CODING);
|
|
|
1750 }
|
|
|
1751 else
|
|
|
1752 {
|
|
|
1753 VXPGOPTIONS = Qnil;
|
|
|
1754 }
|
|
|
1755 DEFVAR_LISP ("pg:options", &VXPGOPTIONS /*
|
|
|
1756 Default PostgreSQL user name.
|
|
|
1757 This value is used when connecting to a database for authentication.
|
|
|
1758 The initial value is set from the PGUSER environment variable.
|
|
|
1759 */ );
|
|
|
1760
|
|
|
1761 if ((p = getenv ("PGPORT")))
|
|
|
1762 {
|
|
|
1763 VXPGPORT = make_int (atoi (p));
|
|
|
1764 }
|
|
|
1765 else
|
|
|
1766 {
|
|
|
1767 VXPGPORT = Qnil;
|
|
|
1768 }
|
|
|
1769 DEFVAR_LISP ("pg:port", &VXPGPORT /*
|
|
|
1770 Default port to connect to PostgreSQL backend.
|
|
|
1771 This value is used when connecting to a database.
|
|
|
1772 The initial value is set from the PGPORT environment variable.
|
|
|
1773 */ );
|
|
|
1774
|
|
|
1775 if ((p = getenv ("PGTTY")))
|
|
|
1776 {
|
|
|
1777 VXPGTTY = build_ext_string (p, PG_OS_CODING);
|
|
|
1778 }
|
|
|
1779 else
|
|
|
1780 {
|
|
|
1781 VXPGTTY = Qnil;
|
|
|
1782 }
|
|
|
1783 DEFVAR_LISP ("pg:tty", &VXPGTTY /*
|
|
|
1784 Default debugging TTY.
|
|
|
1785 There is no useful setting of this variable in the XEmacs Lisp API.
|
|
|
1786 The initial value is set from the PGTTY environment variable.
|
|
|
1787 */ );
|
|
|
1788
|
|
|
1789 if ((p = getenv ("PGDATABASE")))
|
|
|
1790 {
|
|
|
1791 VXPGDATABASE = build_ext_string (p, PG_OS_CODING);
|
|
|
1792 }
|
|
|
1793 else
|
|
|
1794 {
|
|
|
1795 VXPGDATABASE = Qnil;
|
|
|
1796 }
|
|
|
1797 DEFVAR_LISP ("pg:database", &VXPGDATABASE /*
|
|
|
1798 Default database to connect to.
|
|
|
1799 The initial value is set from the PGDATABASE environment variable.
|
|
|
1800 */ );
|
|
|
1801
|
|
|
1802 if ((p = getenv ("PGREALM")))
|
|
|
1803 {
|
|
|
1804 VXPGREALM = build_ext_string (p, PG_OS_CODING);
|
|
|
1805 }
|
|
|
1806 else
|
|
|
1807 {
|
|
|
1808 VXPGREALM = Qnil;
|
|
|
1809 }
|
|
|
1810 DEFVAR_LISP ("pg:realm", &VXPGREALM /*
|
|
|
1811 Default kerberos realm to use for authentication.
|
|
|
1812 The initial value is set from the PGREALM environment variable.
|
|
|
1813 */ );
|
|
|
1814
|
|
|
1815 #ifdef MULE
|
|
|
1816 /* It's not clear whether this is any use. My intent is to
|
|
|
1817 autodetect the coding system from the database. */
|
|
|
1818 if ((p = getenv ("PGCLIENTENCODING")))
|
|
|
1819 {
|
|
|
1820 VXPGCLIENTENCODING = build_ext_string (p, PG_OS_CODING);
|
|
|
1821 }
|
|
|
1822 else
|
|
|
1823 {
|
|
|
1824 VXPGCLIENTENCODING = Qnil;
|
|
|
1825 }
|
|
|
1826 DEFVAR_LISP ("pg:client-encoding", &VXPGCLIENTENCODING /*
|
|
|
1827 Default client encoding to use.
|
|
|
1828 The initial value is set from the PGCLIENTENCODING environment variable.
|
|
|
1829 */ );
|
|
|
1830 #endif
|
|
|
1831
|
|
|
1832 #if !defined(HAVE_POSTGRESQLV7)
|
|
|
1833 if ((p = getenv ("PGAUTHTYPE")))
|
|
|
1834 {
|
|
|
1835 VXPGAUTHTYPE = build_ext_string (p, PG_OS_CODING);
|
|
|
1836 }
|
|
|
1837 else
|
|
|
1838 {
|
|
|
1839 VXPGAUTHTYPE = Qnil;
|
|
|
1840 }
|
|
|
1841 DEFVAR_LISP ("pg:authtype", &VXPGAUTHTYPE /*
|
|
|
1842 Default authentication to use.
|
|
|
1843 The initial value is set from the PGAUTHTYPE environment variable.
|
|
|
1844
|
|
|
1845 WARNING: This variable has gone away in versions of PostgreSQL newer
|
|
|
1846 than 6.5.
|
|
|
1847 */ );
|
|
|
1848 #endif
|
|
|
1849
|
|
|
1850 if ((p = getenv ("PGGEQO")))
|
|
|
1851 {
|
|
|
1852 VXPGGEQO = build_ext_string (p, PG_OS_CODING);
|
|
|
1853 }
|
|
|
1854 else
|
|
|
1855 {
|
|
|
1856 VXPGGEQO = Qnil;
|
|
|
1857 }
|
|
|
1858 DEFVAR_LISP ("pg:geqo", &VXPGGEQO /*
|
|
|
1859 Genetic Query Optimizer options.
|
|
|
1860 The initial value is set from the PGGEQO environment variable.
|
|
|
1861 */ );
|
|
|
1862
|
|
|
1863 if ((p = getenv ("PGCOSTINDEX")))
|
|
|
1864 {
|
|
|
1865 VXPGCOSTINDEX = build_ext_string (p, PG_OS_CODING);
|
|
|
1866 }
|
|
|
1867 else
|
|
|
1868 {
|
|
|
1869 VXPGCOSTINDEX = Qnil;
|
|
|
1870 }
|
|
|
1871 DEFVAR_LISP ("pg:cost-index", &VXPGCOSTINDEX /*
|
|
|
1872 Default cost index options.
|
|
|
1873 The initial value is set from the PGCOSTINDEX environment variable.
|
|
|
1874 */ );
|
|
|
1875
|
|
|
1876 if ((p = getenv ("PGCOSTHEAP")))
|
|
|
1877 {
|
|
|
1878 VXPGCOSTHEAP = build_ext_string (p, PG_OS_CODING);
|
|
|
1879 }
|
|
|
1880 else
|
|
|
1881 {
|
|
|
1882 VXPGCOSTHEAP = Qnil;
|
|
|
1883 }
|
|
|
1884 DEFVAR_LISP ("pg:cost-heap", &VXPGCOSTHEAP /*
|
|
|
1885 Default cost heap options.
|
|
|
1886 The initial value is set from the PGCOSTHEAP environment variable.
|
|
|
1887 */ );
|
|
|
1888
|
|
|
1889 if ((p = getenv ("PGTZ")))
|
|
|
1890 {
|
|
|
1891 VXPGTZ = build_ext_string (p, PG_OS_CODING);
|
|
|
1892 }
|
|
|
1893 else
|
|
|
1894 {
|
|
|
1895 VXPGTZ = Qnil;
|
|
|
1896 }
|
|
|
1897 DEFVAR_LISP ("pg:tz", &VXPGTZ /*
|
|
|
1898 Default timezone to use.
|
|
|
1899 The initial value is set from the PGTZ environment variable.
|
|
|
1900 */ );
|
|
|
1901
|
|
|
1902 if ((p = getenv ("PGDATESTYLE")))
|
|
|
1903 {
|
|
|
1904 VXPGDATESTYLE = build_ext_string (p, PG_OS_CODING);
|
|
|
1905 }
|
|
|
1906 else
|
|
|
1907 {
|
|
|
1908 VXPGDATESTYLE = Qnil;
|
|
|
1909 }
|
|
|
1910 DEFVAR_LISP ("pg:date-style", &VXPGDATESTYLE /*
|
|
|
1911 Default date style to use.
|
|
|
1912 The initial value is set from the PGDATESTYLE environment variable.
|
|
|
1913 */ );
|
|
|
1914 }
|
