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996
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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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95 #endif
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96
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97 /* #define POSTGRES_LO_IMPORT_IS_VOID 1 */
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98
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99 #include "lisp.h"
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100 #include "sysdep.h"
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101
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102 #include "buffer.h"
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103 #include "postgresql.h"
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104 #include "process.h"
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105
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106 #ifdef RUNNING_XEMACS_21_1 /* handle interface changes */
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107 #define PG_OS_CODING FORMAT_FILENAME
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108 #define TO_EXTERNAL_FORMAT(a,from,b,to,c) GET_C_STRING_EXT_DATA_ALLOCA(from,FORMAT_FILENAME,to)
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109 #else
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110 #ifdef MULE
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111 #define PG_OS_CODING get_coding_system_for_text_file (Vpg_coding_system, 1)
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112 #else
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113 #define PG_OS_CODING Qnative
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114 #endif
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115 Lisp_Object Vpg_coding_system;
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116 #endif
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117
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118 #define CHECK_LIVE_CONNECTION(P) do { \
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119 if (!P || (PQstatus (P) != CONNECTION_OK)) { \
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120 char *e = "bad value"; \
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121 if (P) e = PQerrorMessage (P); \
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122 signal_ferror (Qprocess_error, "dead connection [%s]", e); \
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123 } } while (0)
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124 #define PUKE_IF_NULL(p) do { \
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125 if (!p) signal_error (Qinvalid_argument, "bad value", Qunbound); \
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126 } while (0)
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127
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128 static Lisp_Object VXPGHOST;
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129 static Lisp_Object VXPGUSER;
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130 static Lisp_Object VXPGOPTIONS;
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131 static Lisp_Object VXPGPORT;
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132 static Lisp_Object VXPGTTY; /* This needs to be blanked! */
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133 static Lisp_Object VXPGDATABASE;
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134 static Lisp_Object VXPGREALM;
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135 #ifdef MULE
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136 static Lisp_Object VXPGCLIENTENCODING;
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137 #endif /* MULE */
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138
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139 /* Other variables:
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140 PGAUTHTYPE -- not used after PostgreSQL 6.5
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141 PGGEQO
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142 PGCOSTINDEX
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143 PGCOSTHEAP
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144 PGTZ
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145 PGDATESTYLE
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146 */
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147 #ifndef HAVE_POSTGRESQLV7
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148 static Lisp_Object VXPGAUTHTYPE;
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149 #endif
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150 static Lisp_Object VXPGGEQO, VXPGCOSTINDEX, VXPGCOSTHEAP, VXPGTZ, VXPGDATESTYLE;
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151
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152 static Lisp_Object Qpostgresql;
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153 static Lisp_Object Qpg_connection_ok, Qpg_connection_bad;
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154 static Lisp_Object Qpg_connection_started, Qpg_connection_made;
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155 static Lisp_Object Qpg_connection_awaiting_response, Qpg_connection_auth_ok;
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156 static Lisp_Object Qpg_connection_setenv;
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157
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158 static Lisp_Object Qpqdb, Qpquser, Qpqpass, Qpqhost, Qpqport, Qpqtty;
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159 static Lisp_Object Qpqoptions, Qpqstatus, Qpqerrormessage, Qpqbackendpid;
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160
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161 static Lisp_Object Qpgres_empty_query, Qpgres_command_ok, Qpgres_tuples_ok;
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162 static Lisp_Object Qpgres_copy_out, Qpgres_copy_in, Qpgres_bad_response;
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163 static Lisp_Object Qpgres_nonfatal_error, Qpgres_fatal_error;
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164
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165 static Lisp_Object Qpgres_polling_failed, Qpgres_polling_reading;
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166 static Lisp_Object Qpgres_polling_writing, Qpgres_polling_ok;
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167 static Lisp_Object Qpgres_polling_active;
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168 /****/
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169
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170 /* PGconn is an opaque object and we need to be able to store them in
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171 Lisp code because libpq supports multiple connections.
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172 */
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173 Lisp_Object Qpgconnp;
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174
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175 static Lisp_Object
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176 make_pgconn (Lisp_PGconn *pgconn)
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177 {
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178 return wrap_pgconn (pgconn);
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179 }
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180
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181 #ifdef USE_KKCC
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182 static const struct lrecord_description pgconn_description [] = {
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183 { XD_END }
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184 };
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185 #endif /* USE_KKCC */
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186
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187 static Lisp_Object
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188 #ifdef RUNNING_XEMACS_21_1
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189 mark_pgconn (Lisp_Object obj, void (*markobj) (Lisp_Object))
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190 #else
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191 mark_pgconn (Lisp_Object obj)
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192 #endif
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193 {
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194 return Qnil;
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195 }
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196
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197 static void
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198 print_pgconn (Lisp_Object obj, Lisp_Object printcharfun, int escapeflag)
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199 {
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200 char buf[256];
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201 PGconn *P;
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202 ConnStatusType cst;
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203 char *host="", *db="", *user="", *port="";
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204
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205 P = (XPGCONN (obj))->pgconn;
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206
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207 if (!P) /* this may happen since we allow PQfinish() to be called */
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208 strcpy (buf, "#<PGconn DEAD>"); /* evil! */
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209 else if ((cst = PQstatus (P)) == CONNECTION_OK)
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210 {
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211 if (!(host = PQhost (P)))
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212 host = "";
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213 port = PQport (P);
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214 db = PQdb (P);
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215 if (!(user = PQuser (P)))
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216 user = "";
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217 sprintf (buf, "#<PGconn %s:%s %s/%s>", /* evil! */
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218 !strlen (host) ? "localhost" : host,
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219 port,
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220 user,
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221 db);
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222 }
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223 else if (cst == CONNECTION_BAD)
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224 strcpy (buf, "#<PGconn BAD>"); /* evil! */
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225 else
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226 strcpy (buf, "#<PGconn connecting>"); /* evil! */
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227
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228 if (print_readably)
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229 printing_unreadable_object ("%s", buf);
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230 else
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231 write_c_string (printcharfun, buf);
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232 }
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233
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234 static Lisp_PGconn *
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235 allocate_pgconn (void)
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236 {
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237 #ifdef RUNNING_XEMACS_21_1
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238 Lisp_PGconn *pgconn = alloc_lcrecord_type (Lisp_PGconn,
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239 lrecord_pgconn);
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240 #else
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241 Lisp_PGconn *pgconn = alloc_lcrecord_type (Lisp_PGconn,
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242 &lrecord_pgconn);
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243 #endif
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244 pgconn->pgconn = (PGconn *)NULL;
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245 return pgconn;
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246 }
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247
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248 static void
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249 finalize_pgconn (void *header, int for_disksave)
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250 {
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251 Lisp_PGconn *pgconn = (Lisp_PGconn *)header;
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252
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253 if (for_disksave)
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254 invalid_operation ("Can't dump an emacs containing PGconn objects",
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255 make_pgconn (pgconn));
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256
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257 if (pgconn->pgconn)
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258 {
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259 PQfinish (pgconn->pgconn);
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260 pgconn->pgconn = (PGconn *)NULL;
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261 }
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262 }
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263
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264 #ifdef RUNNING_XEMACS_21_1
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265 DEFINE_LRECORD_IMPLEMENTATION ("pgconn", pgconn,
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266 mark_pgconn, print_pgconn, finalize_pgconn,
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267 NULL, NULL,
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268 Lisp_PGconn);
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269 #else
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270 #ifdef USE_KKCC
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271 DEFINE_LRECORD_IMPLEMENTATION ("pgconn", pgconn,
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272 0, /*dumpable-flag*/
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273 mark_pgconn, print_pgconn, finalize_pgconn,
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274 NULL, NULL,
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275 pgconn_description,
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276 Lisp_PGconn);
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277 #else /* not USE_KKCC */
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278 DEFINE_LRECORD_IMPLEMENTATION ("pgconn", pgconn,
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279 mark_pgconn, print_pgconn, finalize_pgconn,
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280 NULL, NULL,
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281 0,
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282 Lisp_PGconn);
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283 #endif /* not USE_KKCC */
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284 #endif
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285 /****/
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286
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287 /* PGresult is an opaque object and we need to be able to store them in
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288 Lisp code.
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289 */
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290 Lisp_Object Qpgresultp;
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291
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292 static Lisp_Object
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293 make_pgresult (Lisp_PGresult *pgresult)
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294 {
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295 return wrap_pgresult (pgresult);
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296 }
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297
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298 #ifdef USE_KKCC
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299 static const struct lrecord_description pgresult_description [] = {
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300 { XD_END }
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301 };
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302 #endif /* USE_KKCC */
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303
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304
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305 static Lisp_Object
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306 #ifdef RUNNING_XEMACS_21_1
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307 mark_pgresult (Lisp_Object obj, void (*markobj) (Lisp_Object))
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308 #else
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309 mark_pgresult (Lisp_Object obj)
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310 #endif
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311 {
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312 return Qnil;
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313 }
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314
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315 #define RESULT_TUPLES_FMT "#<PGresult %s[%d] - %s>"
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316 #define RESULT_CMD_TUPLES_FMT "#<PGresult %s[%s] - %s>"
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317 #define RESULT_DEFAULT_FMT "#<PGresult %s - %s>"
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318 static void
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319 print_pgresult (Lisp_Object obj, Lisp_Object printcharfun, int escapeflag)
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320 {
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321 char buf[1024];
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322 PGresult *res;
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323
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324 res = (XPGRESULT (obj))->pgresult;
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325
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326 if (res)
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327 {
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328 switch (PQresultStatus (res))
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329 {
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330 case PGRES_TUPLES_OK:
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331 /* Add number of tuples of result to output */
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332 sprintf (buf, RESULT_TUPLES_FMT, /* evil! */
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333 PQresStatus (PQresultStatus (res)),
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334 PQntuples (res),
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335 PQcmdStatus (res));
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336 break;
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337 case PGRES_COMMAND_OK:
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338 /* Add number of tuples affected by output-less command */
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339 if (!strlen (PQcmdTuples (res))) goto notuples;
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340 sprintf (buf, RESULT_CMD_TUPLES_FMT, /* evil! */
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341 PQresStatus (PQresultStatus (res)),
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342 PQcmdTuples (res),
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343 PQcmdStatus (res));
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344 break;
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345 default:
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346 notuples:
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347 /* No counts to print */
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348 sprintf (buf, RESULT_DEFAULT_FMT, /* evil! */
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349 PQresStatus (PQresultStatus (res)),
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350 PQcmdStatus (res));
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351 break;
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352 }
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353 }
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354 else
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355 strcpy (buf, "#<PGresult DEAD>"); /* evil! */
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356
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357 if (print_readably)
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358 printing_unreadable_object ("%s", buf);
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359 else
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360 write_c_string (printcharfun, buf);
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361 }
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362
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363 #undef RESULT_TUPLES_FMT
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364 #undef RESULT_CMD_TUPLES_FMT
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365 #undef RESULT_DEFAULT_FMT
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366
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367 static Lisp_PGresult *
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368 allocate_pgresult (void)
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369 {
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370 #ifdef RUNNING_XEMACS_21_1
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371 Lisp_PGresult *pgresult = alloc_lcrecord_type (Lisp_PGresult,
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372 lrecord_pgresult);
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373 #else
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374 Lisp_PGresult *pgresult = alloc_lcrecord_type (Lisp_PGresult,
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375 &lrecord_pgresult);
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376 #endif
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377 pgresult->pgresult = (PGresult *)NULL;
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378 return pgresult;
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379 }
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380
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381 static void
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382 finalize_pgresult (void *header, int for_disksave)
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383 {
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384 Lisp_PGresult *pgresult = (Lisp_PGresult *)header;
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385
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386 if (for_disksave)
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387 invalid_operation ("Can't dump an emacs containing PGresult objects",
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388 make_pgresult (pgresult));
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389
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390 if (pgresult->pgresult)
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391 {
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392 PQclear (pgresult->pgresult);
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393 pgresult->pgresult = (PGresult *)NULL;
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394 }
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395 }
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396
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397 #ifdef RUNNING_XEMACS_21_1
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398 DEFINE_LRECORD_IMPLEMENTATION ("pgresult", pgresult,
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|
|
399 mark_pgresult, print_pgresult, finalize_pgresult,
|
|
|
400 NULL, NULL,
|
|
|
401 Lisp_PGresult);
|
|
|
402 #else
|
|
|
403 #ifdef USE_KKCC
|
|
|
404 DEFINE_LRECORD_IMPLEMENTATION ("pgresult", pgresult,
|
|
|
405 0, /*dumpable-flag*/
|
|
|
406 mark_pgresult, print_pgresult, finalize_pgresult,
|
|
|
407 NULL, NULL,
|
|
|
408 pgresult_description,
|
|
|
409 Lisp_PGresult);
|
|
|
410 #else /* not USE_KKCC */
|
|
|
411 DEFINE_LRECORD_IMPLEMENTATION ("pgresult", pgresult,
|
|
|
412 mark_pgresult, print_pgresult, finalize_pgresult,
|
|
|
413 NULL, NULL,
|
|
|
414 0,
|
|
|
415 Lisp_PGresult);
|
|
|
416 #endif /* not USE_KKCC */
|
|
|
417 #endif
|
|
|
418
|
|
|
419 /***********************/
|
|
|
420
|
|
|
421 /* notices */
|
|
|
422 static void
|
|
|
423 xemacs_notice_processor (void *arg, const char *msg)
|
|
|
424 {
|
|
|
425 warn_when_safe (Qpostgresql, Qnotice, "%s", msg);
|
|
|
426 }
|
|
|
427
|
|
|
428 /* There are four ways (as of PostgreSQL v7) to connect to a database.
|
|
|
429 Two of them, PQsetdb and PQsetdbLogin, are deprecated. Both of those
|
|
|
430 routines take a number of positional parameters and are better done in Lisp.
|
|
|
431 Note that PQconnectStart does not exist prior to v7.
|
|
|
432 */
|
|
|
433
|
|
|
434 /* ###autoload */
|
|
|
435 DEFUN ("pq-conn-defaults", Fpq_conn_defaults, 0, 0, 0, /*
|
|
|
436 Return a connection default structure.
|
|
|
437 */
|
|
|
438 ())
|
|
|
439 {
|
|
|
440 /* This function can GC */
|
|
|
441 PQconninfoOption *pcio;
|
|
|
442 Lisp_Object temp, temp1;
|
|
|
443 int i;
|
|
|
444
|
|
|
445 pcio = PQconndefaults();
|
|
|
446 if (!pcio) return Qnil; /* can never happen in libpq-7.0 */
|
|
|
447 temp = list1 (Fcons (build_ext_string (pcio[0].keyword, PG_OS_CODING),
|
|
|
448 Fcons (build_ext_string (pcio[0].envvar, PG_OS_CODING),
|
|
|
449 Fcons (build_ext_string (pcio[0].compiled, PG_OS_CODING),
|
|
|
450 Fcons (build_ext_string (pcio[0].val, PG_OS_CODING),
|
|
|
451 Fcons (build_ext_string (pcio[0].label, PG_OS_CODING),
|
|
|
452 Fcons (build_ext_string (pcio[0].dispchar, PG_OS_CODING),
|
|
|
453 Fcons (make_int (pcio[0].dispsize), Qnil))))))));
|
|
|
454
|
|
|
455 for (i = 1; pcio[i].keyword; i++)
|
|
|
456 {
|
|
|
457 temp1 = list1 (Fcons (build_ext_string (pcio[i].keyword, PG_OS_CODING),
|
|
|
458 Fcons (build_ext_string (pcio[i].envvar, PG_OS_CODING),
|
|
|
459 Fcons (build_ext_string (pcio[i].compiled, PG_OS_CODING),
|
|
|
460 Fcons (build_ext_string (pcio[i].val, PG_OS_CODING),
|
|
|
461 Fcons (build_ext_string (pcio[i].label, PG_OS_CODING),
|
|
|
462 Fcons (build_ext_string (pcio[i].dispchar, PG_OS_CODING),
|
|
|
463 Fcons (make_int (pcio[i].dispsize), Qnil))))))));
|
|
|
464 {
|
|
|
465 Lisp_Object args[2];
|
|
|
466 args[0] = temp;
|
|
|
467 args[1] = temp1;
|
|
|
468 /* Fappend GCPROs its arguments */
|
|
|
469 temp = Fappend (2, args);
|
|
|
470 }
|
|
|
471 }
|
|
|
472
|
|
|
473 return temp;
|
|
|
474 }
|
|
|
475
|
|
|
476 /* PQconnectdb Makes a new connection to a backend.
|
|
|
477 PGconn *PQconnectdb(const char *conninfo)
|
|
|
478 */
|
|
|
479
|
|
|
480 /* ###autoload */
|
|
|
481 DEFUN ("pq-connectdb", Fpq_connectdb, 1, 1, 0, /*
|
|
|
482 Make a new connection to a PostgreSQL backend.
|
|
|
483 */
|
|
|
484 (conninfo))
|
|
|
485 {
|
|
|
486 PGconn *P;
|
|
|
487 Lisp_PGconn *lisp_pgconn;
|
|
|
488 char *error_message = "Out of Memory?";
|
|
|
489 char *c_conninfo;
|
|
|
490
|
|
|
491 CHECK_STRING (conninfo);
|
|
|
492
|
|
|
493 TO_EXTERNAL_FORMAT(LISP_STRING, conninfo,
|
|
|
494 C_STRING_ALLOCA, c_conninfo, Qnative);
|
|
|
495 P = PQconnectdb (c_conninfo);
|
|
|
496 if (P && (PQstatus (P) == CONNECTION_OK))
|
|
|
497 {
|
|
|
498 (void)PQsetNoticeProcessor (P, xemacs_notice_processor, NULL);
|
|
|
499 lisp_pgconn = allocate_pgconn();
|
|
|
500 lisp_pgconn->pgconn = P;
|
|
|
501 return make_pgconn (lisp_pgconn);
|
|
|
502 }
|
|
|
503 else
|
|
|
504 {
|
|
|
505 /* Connection failed. Destroy the connection and signal an error. */
|
|
|
506 char buf[BLCKSZ];
|
|
|
507 strcpy (buf, error_message);
|
|
|
508 if (P)
|
|
|
509 {
|
|
|
510 /* storage for the error message gets erased when call PQfinish */
|
|
|
511 /* so we must temporarily stash it somewhere */
|
|
|
512 strncpy (buf, PQerrorMessage (P), sizeof (buf));
|
|
|
513 buf[sizeof (buf) - 1] = '\0';
|
|
|
514 PQfinish (P);
|
|
|
515 }
|
|
|
516 signal_ferror (Qprocess_error, "libpq: %s", buf);
|
|
|
517 }
|
|
|
518 }
|
|
|
519
|
|
|
520 /* PQconnectStart Makes a new asynchronous connection to a backend.
|
|
|
521 PGconn *PQconnectStart(const char *conninfo)
|
|
|
522 */
|
|
|
523
|
|
|
524 #ifdef HAVE_POSTGRESQLV7
|
|
|
525 /* ###autoload */
|
|
|
526 DEFUN ("pq-connect-start", Fpq_connect_start, 1, 1, 0, /*
|
|
|
527 Make a new asynchronous connection to a PostgreSQL backend.
|
|
|
528 */
|
|
|
529 (conninfo))
|
|
|
530 {
|
|
|
531 PGconn *P;
|
|
|
532 Lisp_PGconn *lisp_pgconn;
|
|
|
533 char *error_message = "Out of Memory?";
|
|
|
534 char *c_conninfo;
|
|
|
535
|
|
|
536 CHECK_STRING (conninfo);
|
|
|
537 TO_EXTERNAL_FORMAT (LISP_STRING, conninfo,
|
|
|
538 C_STRING_ALLOCA, c_conninfo, Qnative);
|
|
|
539 P = PQconnectStart (c_conninfo);
|
|
|
540
|
|
|
541 if (P && (PQstatus (P) != CONNECTION_BAD))
|
|
|
542 {
|
|
|
543 (void)PQsetNoticeProcessor (P, xemacs_notice_processor, NULL);
|
|
|
544 lisp_pgconn = allocate_pgconn();
|
|
|
545 lisp_pgconn->pgconn = P;
|
|
|
546
|
|
|
547 return make_pgconn (lisp_pgconn);
|
|
|
548 }
|
|
|
549 else
|
|
|
550 {
|
|
|
551 /* capture the error message before destroying the object */
|
|
|
552 char buf[BLCKSZ];
|
|
|
553 strcpy (buf, error_message);
|
|
|
554 if (P)
|
|
|
555 {
|
|
|
556 strncpy (buf, PQerrorMessage (P), sizeof (buf));
|
|
|
557 buf[sizeof (buf) - 1] = '\0';
|
|
|
558 PQfinish (P);
|
|
|
559 }
|
|
|
560 signal_ferror (Qprocess_error, "libpq: %s", buf);
|
|
|
561 }
|
|
|
562 }
|
|
|
563
|
|
|
564 DEFUN ("pq-connect-poll", Fpq_connect_poll, 1, 1, 0, /*
|
|
|
565 Poll an asynchronous connection for completion
|
|
|
566 */
|
|
|
567 (conn))
|
|
|
568 {
|
|
|
569 PGconn *P;
|
|
|
570 PostgresPollingStatusType polling_status;
|
|
|
571
|
|
|
572 CHECK_PGCONN (conn);
|
|
|
573
|
|
|
574 P = (XPGCONN (conn))->pgconn;
|
|
|
575 CHECK_LIVE_CONNECTION (P);
|
|
|
576
|
|
|
577 polling_status = PQconnectPoll (P);
|
|
|
578 switch (polling_status)
|
|
|
579 {
|
|
|
580 case PGRES_POLLING_FAILED:
|
|
|
581 /* Something Bad has happened */
|
|
|
582 {
|
|
|
583 char *e = PQerrorMessage (P);
|
|
|
584 signal_ferror (Qprocess_error, "libpq: %s", e);
|
|
|
585 }
|
|
|
586 case PGRES_POLLING_OK:
|
|
|
587 return Qpgres_polling_ok;
|
|
|
588 case PGRES_POLLING_READING:
|
|
|
589 return Qpgres_polling_reading;
|
|
|
590 case PGRES_POLLING_WRITING:
|
|
|
591 return Qpgres_polling_writing;
|
|
|
592 case PGRES_POLLING_ACTIVE:
|
|
|
593 return Qpgres_polling_active;
|
|
|
594 default:
|
|
|
595 /* they've added a new field we don't know about */
|
|
|
596 signal_ferror (Qprocess_error, "Help! Unknown status code %08x from backend!", polling_status);
|
|
|
597 }
|
|
|
598 }
|
|
|
599
|
|
|
600 #ifdef MULE
|
|
|
601 DEFUN ("pq-client-encoding", Fpq_client_encoding, 1, 1, 0, /*
|
|
|
602 Return client coding system.
|
|
|
603 */
|
|
|
604 (conn))
|
|
|
605 {
|
|
|
606 PGconn *P;
|
|
|
607
|
|
|
608 CHECK_PGCONN (conn);
|
|
|
609 P = (XPGCONN (conn))->pgconn;
|
|
|
610 CHECK_LIVE_CONNECTION (P);
|
|
|
611
|
|
|
612 return make_int (PQclientEncoding (P));
|
|
|
613 }
|
|
|
614
|
|
|
615 DEFUN ("pq-set-client-encoding", Fpq_set_client_encoding, 2, 2, 0, /*
|
|
|
616 Set client coding system.
|
|
|
617 */
|
|
|
618 (conn, encoding))
|
|
|
619 {
|
|
|
620 PGconn *P;
|
|
|
621 int rc;
|
|
|
622 char *c_encoding;
|
|
|
623
|
|
|
624 CHECK_PGCONN (conn);
|
|
|
625 CHECK_STRING (encoding);
|
|
|
626
|
|
|
627 P = (XPGCONN (conn))->pgconn;
|
|
|
628 CHECK_LIVE_CONNECTION (P);
|
|
|
629
|
|
|
630 TO_EXTERNAL_FORMAT (LISP_STRING, encoding,
|
|
|
631 C_STRING_ALLOCA, c_encoding, Qnative);
|
|
|
632
|
|
|
633 if ((rc = PQsetClientEncoding (P, c_encoding)) < 0)
|
|
|
634 signal_error (Qinvalid_argument, "bad encoding", Qunbound);
|
|
|
635 else
|
|
|
636 return make_int (rc);
|
|
|
637 }
|
|
|
638
|
|
|
639 #endif
|
|
|
640 #endif /* HAVE_POSTGRESQLV7 */
|
|
|
641
|
|
|
642 /* PQfinish Close the connection to the backend. Also frees memory
|
|
|
643 used by the PGconn object.
|
|
|
644 void PQfinish(PGconn *conn)
|
|
|
645 */
|
|
|
646 DEFUN ("pq-finish", Fpq_finish, 1, 1, 0, /*
|
|
|
647 Close the connection to the backend.
|
|
|
648 */
|
|
|
649 (conn))
|
|
|
650 {
|
|
|
651 PGconn *P;
|
|
|
652
|
|
|
653 CHECK_PGCONN (conn);
|
|
|
654 P = (XPGCONN (conn))->pgconn;
|
|
|
655 PUKE_IF_NULL (P);
|
|
|
656
|
|
|
657 PQfinish (P);
|
|
|
658 /* #### PQfinish deallocates the PGconn structure, so we now have a
|
|
|
659 dangling pointer. */
|
|
|
660 /* Genocided all @'s ... */
|
|
|
661 (XPGCONN (conn))->pgconn = (PGconn *)NULL; /* You feel DEAD inside */
|
|
|
662 return Qnil;
|
|
|
663 }
|
|
|
664
|
|
|
665 DEFUN ("pq-clear", Fpq_clear, 1, 1, 0, /*
|
|
|
666 Forcibly erase a PGresult object.
|
|
|
667 */
|
|
|
668 (res))
|
|
|
669 {
|
|
|
670 PGresult *R;
|
|
|
671
|
|
|
672 CHECK_PGRESULT (res);
|
|
|
673 R = (XPGRESULT (res))->pgresult;
|
|
|
674 PUKE_IF_NULL (R);
|
|
|
675
|
|
|
676 PQclear (R);
|
|
|
677 /* Genocided all @'s ... */
|
|
|
678 (XPGRESULT (res))->pgresult = (PGresult *)NULL; /* You feel DEAD inside */
|
|
|
679
|
|
|
680 return Qnil;
|
|
|
681 }
|
|
|
682
|
|
|
683 DEFUN ("pq-is-busy", Fpq_is_busy, 1, 1, 0, /*
|
|
|
684 Return t if PQgetResult would block waiting for input.
|
|
|
685 */
|
|
|
686 (conn))
|
|
|
687 {
|
|
|
688 PGconn *P;
|
|
|
689
|
|
|
690 CHECK_PGCONN (conn);
|
|
|
691 P = (XPGCONN (conn))->pgconn;
|
|
|
692 CHECK_LIVE_CONNECTION (P);
|
|
|
693
|
|
|
694 return PQisBusy (P) ? Qt : Qnil;
|
|
|
695 }
|
|
|
696
|
|
|
697 DEFUN ("pq-consume-input", Fpq_consume_input, 1, 1, 0, /*
|
|
|
698 Consume any available input from the backend.
|
|
|
699 Returns nil if something bad happened.
|
|
|
700 */
|
|
|
701 (conn))
|
|
|
702 {
|
|
|
703 PGconn *P;
|
|
|
704
|
|
|
705 CHECK_PGCONN (conn);
|
|
|
706 P = (XPGCONN (conn))->pgconn;
|
|
|
707 CHECK_LIVE_CONNECTION (P);
|
|
|
708
|
|
|
709 return PQconsumeInput (P) ? Qt : Qnil;
|
|
|
710 }
|
|
|
711
|
|
|
712 /* PQreset Reset the communication port with the backend.
|
|
|
713 void PQreset(PGconn *conn)
|
|
|
714 */
|
|
|
715 DEFUN ("pq-reset", Fpq_reset, 1, 1, 0, /*
|
|
|
716 Reset the connection to the backend.
|
|
|
717 This function will close the connection to the backend and attempt to
|
|
|
718 reestablish a new connection to the same postmaster, using all the same
|
|
|
719 parameters previously used. This may be useful for error recovery if a
|
|
|
720 working connection is lost.
|
|
|
721 */
|
|
|
722 (conn))
|
|
|
723 {
|
|
|
724 PGconn *P;
|
|
|
725
|
|
|
726 CHECK_PGCONN (conn);
|
|
|
727 P = (XPGCONN (conn))->pgconn;
|
|
|
728 PUKE_IF_NULL (P);/* we can resurrect a BAD connection, but not a dead one. */
|
|
|
729
|
|
|
730 PQreset (P);
|
|
|
731
|
|
|
732 return Qnil;
|
|
|
733 }
|
|
|
734
|
|
|
735 #ifdef HAVE_POSTGRESQLV7
|
|
|
736 DEFUN ("pq-reset-start", Fpq_reset_start, 1, 1, 0, /*
|
|
|
737 Reset connection to the backend asynchronously.
|
|
|
738 */
|
|
|
739 (conn))
|
|
|
740 {
|
|
|
741 PGconn *P;
|
|
|
742
|
|
|
743 CHECK_PGCONN (conn);
|
|
|
744 P = (XPGCONN (conn))->pgconn;
|
|
|
745 CHECK_LIVE_CONNECTION (P);
|
|
|
746
|
|
|
747 if (PQresetStart (P)) return Qt;
|
|
|
748 {
|
|
|
749 char *e = PQerrorMessage (P);
|
|
|
750 signal_ferror (Qprocess_error, "libpq: %s", e);
|
|
|
751 }
|
|
|
752 }
|
|
|
753
|
|
|
754 DEFUN ("pq-reset-poll", Fpq_reset_poll, 1, 1, 0, /*
|
|
|
755 Poll an asynchronous reset for completion.
|
|
|
756 */
|
|
|
757 (conn))
|
|
|
758 {
|
|
|
759 PGconn *P;
|
|
|
760 PostgresPollingStatusType polling_status;
|
|
|
761
|
|
|
762 CHECK_PGCONN (conn);
|
|
|
763
|
|
|
764 P = (XPGCONN (conn))->pgconn;
|
|
|
765 CHECK_LIVE_CONNECTION (P);
|
|
|
766
|
|
|
767 polling_status = PQresetPoll (P);
|
|
|
768 switch (polling_status)
|
|
|
769 {
|
|
|
770 case PGRES_POLLING_FAILED:
|
|
|
771 /* Something Bad has happened */
|
|
|
772 {
|
|
|
773 char *e = PQerrorMessage (P);
|
|
|
774 signal_ferror (Qprocess_error, "libpq: %s", e);
|
|
|
775 }
|
|
|
776 case PGRES_POLLING_OK:
|
|
|
777 return Qpgres_polling_ok;
|
|
|
778 case PGRES_POLLING_READING:
|
|
|
779 return Qpgres_polling_reading;
|
|
|
780 case PGRES_POLLING_WRITING:
|
|
|
781 return Qpgres_polling_writing;
|
|
|
782 case PGRES_POLLING_ACTIVE:
|
|
|
783 return Qpgres_polling_active;
|
|
|
784 default:
|
|
|
785 /* they've added a new field we don't know about */
|
|
|
786 signal_ferror (Qprocess_error, "Help! Unknown status code %08x from backend!", polling_status);
|
|
|
787 }
|
|
|
788 }
|
|
|
789 #endif
|
|
|
790
|
|
|
791 DEFUN ("pq-request-cancel", Fpq_request_cancel, 1, 1, 0, /*
|
|
|
792 Attempt to request cancellation of the current operation.
|
|
|
793
|
|
|
794 The return value is t if the cancel request was successfully
|
|
|
795 dispatched, nil if not (in which case conn->errorMessage is set).
|
|
|
796 Note: successful dispatch is no guarantee that there will be any effect at
|
|
|
797 the backend. The application must read the operation result as usual.
|
|
|
798 */
|
|
|
799 (conn))
|
|
|
800 {
|
|
|
801 PGconn *P;
|
|
|
802
|
|
|
803 CHECK_PGCONN (conn);
|
|
|
804 P = (XPGCONN (conn))->pgconn;
|
|
|
805 CHECK_LIVE_CONNECTION (P);
|
|
|
806
|
|
|
807 return PQrequestCancel (P) ? Qt : Qnil;
|
|
|
808 }
|
|
|
809
|
|
|
810 /* accessor function for the PGconn object */
|
|
|
811 DEFUN ("pq-pgconn", Fpq_pgconn, 2, 2, 0, /*
|
|
|
812 Accessor function for the PGconn object.
|
|
|
813 Currently recognized symbols for the field:
|
|
|
814 pq::db Database name
|
|
|
815 pq::user Database user name
|
|
|
816 pq::pass Database user's password
|
|
|
817 pq::host Hostname of PostgreSQL backend connected to
|
|
|
818 pq::port TCP port number of connection
|
|
|
819 pq::tty Debugging TTY (not used in Emacs)
|
|
|
820 pq::options Additional backend options
|
|
|
821 pq::status Connection status (either OK or BAD)
|
|
|
822 pq::error-message Last error message from the backend
|
|
|
823 pq::backend-pid Process ID of backend process
|
|
|
824 */
|
|
|
825 (conn, field))
|
|
|
826 {
|
|
|
827 PGconn *P;
|
|
|
828
|
|
|
829 CHECK_PGCONN (conn);
|
|
|
830 P = (XPGCONN (conn))->pgconn;
|
|
|
831 PUKE_IF_NULL (P); /* BAD connections still have state to query */
|
|
|
832
|
|
|
833 if (EQ(field, Qpqdb))
|
|
|
834 /* PQdb Returns the database name of the connection.
|
|
|
835 char *PQdb(PGconn *conn)
|
|
|
836 */
|
|
|
837 return build_ext_string (PQdb(P), PG_OS_CODING);
|
|
|
838 else if (EQ (field, Qpquser))
|
|
|
839 /* PQuser Returns the user name of the connection.
|
|
|
840 char *PQuser(PGconn *conn)
|
|
|
841 */
|
|
|
842 return build_ext_string (PQuser(P), PG_OS_CODING);
|
|
|
843 else if (EQ (field, Qpqpass))
|
|
|
844 /* PQpass Returns the password of the connection.
|
|
|
845 char *PQpass(PGconn *conn)
|
|
|
846 */
|
|
|
847 return build_ext_string (PQpass(P), PG_OS_CODING);
|
|
|
848 else if (EQ (field, Qpqhost))
|
|
|
849 /* PQhost Returns the server host name of the connection.
|
|
|
850 char *PQhost(PGconn *conn)
|
|
|
851 */
|
|
|
852 return build_ext_string (PQhost(P), PG_OS_CODING);
|
|
|
853 else if (EQ (field, Qpqport))
|
|
|
854 {
|
|
|
855 char *p;
|
|
|
856 /* PQport Returns the port of the connection.
|
|
|
857 char *PQport(PGconn *conn)
|
|
|
858 */
|
|
|
859 if ((p = PQport(P)))
|
|
|
860 return make_int(atoi(p));
|
|
|
861 else
|
|
|
862 return make_int(-1);
|
|
|
863 }
|
|
|
864 else if (EQ (field, Qpqtty))
|
|
|
865 /* PQtty Returns the debug tty of the connection.
|
|
|
866 char *PQtty(PGconn *conn)
|
|
|
867 */
|
|
|
868 return build_ext_string (PQtty(P), PG_OS_CODING);
|
|
|
869 else if (EQ (field, Qpqoptions))
|
|
|
870 /* PQoptions Returns the backend options used in the connection.
|
|
|
871 char *PQoptions(PGconn *conn)
|
|
|
872 */
|
|
|
873 return build_ext_string (PQoptions(P), PG_OS_CODING);
|
|
|
874 else if (EQ (field, Qpqstatus))
|
|
|
875 {
|
|
|
876 ConnStatusType cst;
|
|
|
877 /* PQstatus Returns the status of the connection. The status can be
|
|
|
878 CONNECTION_OK or CONNECTION_BAD.
|
|
|
879 ConnStatusType PQstatus(PGconn *conn)
|
|
|
880 */
|
|
|
881 switch ((cst = PQstatus (P)))
|
|
|
882 {
|
|
|
883 case CONNECTION_OK: return Qpg_connection_ok;
|
|
|
884 case CONNECTION_BAD: return Qpg_connection_bad;
|
|
|
885 #ifdef HAVE_POSTGRESQLV7
|
|
|
886 case CONNECTION_STARTED: return Qpg_connection_started;
|
|
|
887 case CONNECTION_MADE: return Qpg_connection_made;
|
|
|
888 case CONNECTION_AWAITING_RESPONSE: return Qpg_connection_awaiting_response;
|
|
|
889 case CONNECTION_AUTH_OK: return Qpg_connection_auth_ok;
|
|
|
890 case CONNECTION_SETENV: return Qpg_connection_setenv;
|
|
|
891 #endif /* HAVE_POSTGRESQLV7 */
|
|
|
892 default:
|
|
|
893 /* they've added a new field we don't know about */
|
|
|
894 signal_ferror (Qprocess_error, "Help! Unknown connection status code %08x from backend!", cst);
|
|
|
895 }
|
|
|
896 }
|
|
|
897 else if (EQ (field, Qpqerrormessage))
|
|
|
898 /* PQerrorMessage Returns the error message most recently generated
|
|
|
899 by an operation on the connection.
|
|
|
900 char *PQerrorMessage(PGconn* conn);
|
|
|
901 */
|
|
|
902 return build_ext_string (PQerrorMessage(P), PG_OS_CODING);
|
|
|
903 else if (EQ (field, Qpqbackendpid))
|
|
|
904 /* PQbackendPID Returns the process ID of the backend server handling
|
|
|
905 this connection.
|
|
|
906 int PQbackendPID(PGconn *conn);
|
|
|
907 */
|
|
|
908 return make_int (PQbackendPID(P));
|
|
|
909 else
|
|
|
910 signal_error (Qinvalid_argument, "bad PGconn accessor", Qunbound);
|
|
|
911 }
|
|
|
912
|
|
|
913 /* Query functions */
|
|
|
914 DEFUN ("pq-exec", Fpq_exec, 2, 2, 0, /*
|
|
|
915 Submit a query to Postgres and wait for the result.
|
|
|
916 */
|
|
|
917 (conn, query))
|
|
|
918 {
|
|
|
919 PGconn *P;
|
|
|
920 Lisp_PGresult *lisp_pgresult;
|
|
|
921 PGresult *R;
|
|
|
922 char *c_query;
|
|
|
923
|
|
|
924 CHECK_PGCONN (conn);
|
|
|
925 CHECK_STRING (query);
|
|
|
926
|
|
|
927 P = (XPGCONN (conn))->pgconn;
|
|
|
928 CHECK_LIVE_CONNECTION (P);
|
|
|
929
|
|
|
930 TO_EXTERNAL_FORMAT (LISP_STRING, query,
|
|
|
931 C_STRING_ALLOCA, c_query, Qnative);
|
|
|
932
|
|
|
933 R = PQexec (P, c_query);
|
|
|
934 {
|
|
|
935 char *tag, buf[BLCKSZ];
|
|
|
936
|
|
|
937 if (!R) out_of_memory ("query: out of memory", Qunbound);
|
|
|
938 else
|
|
|
939 switch (PQresultStatus (R))
|
|
|
940 {
|
|
|
941 case PGRES_BAD_RESPONSE:
|
|
|
942 tag = "bad response [%s]";
|
|
|
943 goto err;
|
|
|
944 case PGRES_NONFATAL_ERROR:
|
|
|
945 tag = "non-fatal error [%s]";
|
|
|
946 goto err;
|
|
|
947 case PGRES_FATAL_ERROR:
|
|
|
948 tag = "fatal error [%s]";
|
|
|
949 err:
|
|
|
950 strncpy (buf, PQresultErrorMessage (R), sizeof (buf));
|
|
|
951 buf [sizeof (buf) - 1] = '\0';
|
|
|
952 PQclear (R);
|
|
|
953 signal_ferror (Qprocess_error, tag, buf);
|
|
|
954 /*NOTREACHED*/
|
|
|
955 default:
|
|
|
956 break;
|
|
|
957 }
|
|
|
958 }
|
|
|
959
|
|
|
960 lisp_pgresult = allocate_pgresult ();
|
|
|
961 lisp_pgresult->pgresult = R;
|
|
|
962
|
|
|
963 return make_pgresult (lisp_pgresult);
|
|
|
964 }
|
|
|
965
|
|
|
966 DEFUN ("pq-send-query", Fpq_send_query, 2, 2, 0, /*
|
|
|
967 Submit a query to Postgres and don't wait for the result.
|
|
|
968 Returns: t if successfully submitted
|
|
|
969 nil if error (conn->errorMessage is set)
|
|
|
970 */
|
|
|
971 (conn, query))
|
|
|
972 {
|
|
|
973 PGconn *P;
|
|
|
974 char *c_query;
|
|
|
975
|
|
|
976 CHECK_PGCONN (conn);
|
|
|
977 CHECK_STRING (query);
|
|
|
978
|
|
|
979 P = (XPGCONN (conn))->pgconn;
|
|
|
980 CHECK_LIVE_CONNECTION (P);
|
|
|
981
|
|
|
982 TO_EXTERNAL_FORMAT (LISP_STRING, query,
|
|
|
983 C_STRING_ALLOCA, c_query, Qnative);
|
|
|
984
|
|
|
985 if (PQsendQuery (P, c_query)) return Qt;
|
|
|
986 else signal_ferror (Qprocess_error, "async query: %s", PQerrorMessage (P));
|
|
|
987 }
|
|
|
988
|
|
|
989 DEFUN ("pq-get-result", Fpq_get_result, 1, 1, 0, /*
|
|
|
990 Retrieve an asynchronous result from a query.
|
|
|
991 NIL is returned when no more query work remains.
|
|
|
992 */
|
|
|
993 (conn))
|
|
|
994 {
|
|
|
995 PGconn *P;
|
|
|
996 Lisp_PGresult *lisp_pgresult;
|
|
|
997 PGresult *R;
|
|
|
998
|
|
|
999 CHECK_PGCONN (conn);
|
|
|
1000
|
|
|
1001 P = (XPGCONN (conn))->pgconn;
|
|
|
1002 CHECK_LIVE_CONNECTION (P);
|
|
|
1003
|
|
|
1004 R = PQgetResult (P);
|
|
|
1005 if (!R) return Qnil; /* not an error, there's no more data to get */
|
|
|
1006
|
|
|
1007 {
|
|
|
1008 char *tag, buf[BLCKSZ];
|
|
|
1009
|
|
|
1010 switch (PQresultStatus (R))
|
|
|
1011 {
|
|
|
1012 case PGRES_BAD_RESPONSE:
|
|
|
1013 tag = "bad response [%s]";
|
|
|
1014 goto err;
|
|
|
1015 case PGRES_NONFATAL_ERROR:
|
|
|
1016 tag = "non-fatal error [%s]";
|
|
|
1017 goto err;
|
|
|
1018 case PGRES_FATAL_ERROR:
|
|
|
1019 tag = "fatal error [%s]";
|
|
|
1020 err:
|
|
|
1021 strncpy (buf, PQresultErrorMessage (R), sizeof (buf));
|
|
|
1022 buf[sizeof (buf) - 1] = '\0';
|
|
|
1023 PQclear (R);
|
|
|
1024 signal_ferror (Qprocess_error, tag, buf);
|
|
|
1025 /*NOTREACHED*/
|
|
|
1026 default:
|
|
|
1027 break;
|
|
|
1028 }
|
|
|
1029 }
|
|
|
1030
|
|
|
1031 lisp_pgresult = allocate_pgresult();
|
|
|
1032 lisp_pgresult->pgresult = R;
|
|
|
1033
|
|
|
1034 return make_pgresult (lisp_pgresult);
|
|
|
1035 }
|
|
|
1036
|
|
|
1037 DEFUN ("pq-result-status", Fpq_result_status, 1, 1, 0, /*
|
|
|
1038 Return result status of the query.
|
|
|
1039 */
|
|
|
1040 (result))
|
|
|
1041 {
|
|
|
1042 PGresult *R;
|
|
|
1043 ExecStatusType est;
|
|
|
1044
|
|
|
1045 CHECK_PGRESULT (result);
|
|
|
1046 R = (XPGRESULT (result))->pgresult;
|
|
|
1047 PUKE_IF_NULL (R);
|
|
|
1048
|
|
|
1049 switch ((est = PQresultStatus (R))) {
|
|
|
1050 case PGRES_EMPTY_QUERY: return Qpgres_empty_query;
|
|
|
1051 case PGRES_COMMAND_OK: return Qpgres_command_ok;
|
|
|
1052 case PGRES_TUPLES_OK: return Qpgres_tuples_ok;
|
|
|
1053 case PGRES_COPY_OUT: return Qpgres_copy_out;
|
|
|
1054 case PGRES_COPY_IN: return Qpgres_copy_in;
|
|
|
1055 case PGRES_BAD_RESPONSE: return Qpgres_bad_response;
|
|
|
1056 case PGRES_NONFATAL_ERROR: return Qpgres_nonfatal_error;
|
|
|
1057 case PGRES_FATAL_ERROR: return Qpgres_fatal_error;
|
|
|
1058 default:
|
|
|
1059 /* they've added a new field we don't know about */
|
|
|
1060 signal_ferror (Qprocess_error, "Help! Unknown exec status code %08x from backend!", est);
|
|
|
1061 }
|
|
|
1062 }
|
|
|
1063
|
|
|
1064 DEFUN ("pq-res-status", Fpq_res_status, 1, 1, 0, /*
|
|
|
1065 Return stringified result status of the query.
|
|
|
1066 */
|
|
|
1067 (result))
|
|
|
1068 {
|
|
|
1069 PGresult *R;
|
|
|
1070
|
|
|
1071 CHECK_PGRESULT (result);
|
|
|
1072 R = (XPGRESULT (result))->pgresult;
|
|
|
1073 PUKE_IF_NULL (R);
|
|
|
1074
|
|
|
1075 return build_ext_string (PQresStatus (PQresultStatus (R)), PG_OS_CODING);
|
|
|
1076 }
|
|
|
1077
|
|
|
1078 /* Sundry PGresult accessor functions */
|
|
|
1079 DEFUN ("pq-result-error-message", Fpq_result_error_message, 1, 1, 0, /*
|
|
|
1080 Return last message associated with the query.
|
|
|
1081 */
|
|
|
1082 (result))
|
|
|
1083 {
|
|
|
1084 PGresult *R;
|
|
|
1085
|
|
|
1086 CHECK_PGRESULT (result);
|
|
|
1087 R = (XPGRESULT (result))->pgresult;
|
|
|
1088 PUKE_IF_NULL (R);
|
|
|
1089
|
|
|
1090 return build_ext_string (PQresultErrorMessage (R), PG_OS_CODING);
|
|
|
1091 }
|
|
|
1092
|
|
|
1093 DEFUN ("pq-ntuples", Fpq_ntuples, 1, 1, 0, /*
|
|
|
1094 Return the number of tuples (instances) in the query result.
|
|
|
1095 */
|
|
|
1096 (result))
|
|
|
1097 {
|
|
|
1098 PGresult *R;
|
|
|
1099
|
|
|
1100 CHECK_PGRESULT (result);
|
|
|
1101 R = (XPGRESULT (result))->pgresult;
|
|
|
1102 PUKE_IF_NULL (R);
|
|
|
1103
|
|
|
1104 return make_int (PQntuples (R));
|
|
|
1105 }
|
|
|
1106
|
|
|
1107 DEFUN ("pq-nfields", Fpq_nfields, 1, 1, 0, /*
|
|
|
1108 Return the number of fields (attributes) in each tuple of the query result.
|
|
|
1109 */
|
|
|
1110 (result))
|
|
|
1111 {
|
|
|
1112 PGresult *R;
|
|
|
1113
|
|
|
1114 CHECK_PGRESULT (result);
|
|
|
1115 R = (XPGRESULT (result))->pgresult;
|
|
|
1116 PUKE_IF_NULL (R);
|
|
|
1117
|
|
|
1118 return make_int (PQnfields (R));
|
|
|
1119 }
|
|
|
1120
|
|
|
1121 DEFUN ("pq-binary-tuples", Fpq_binary_tuples, 1, 1, 0, /*
|
|
|
1122 Return t if the query result contains binary data, nil otherwise.
|
|
|
1123 */
|
|
|
1124 (result))
|
|
|
1125 {
|
|
|
1126 PGresult *R;
|
|
|
1127
|
|
|
1128 CHECK_PGRESULT (result);
|
|
|
1129 R = (XPGRESULT (result))->pgresult;
|
|
|
1130 PUKE_IF_NULL (R);
|
|
|
1131
|
|
|
1132 return (PQbinaryTuples (R)) ? Qt : Qnil;
|
|
|
1133 }
|
|
|
1134
|
|
|
1135 DEFUN ("pq-fname", Fpq_fname, 2, 2, 0, /*
|
|
|
1136 Return the field (attribute) name associated with the given field index.
|
|
|
1137 Field indices start at 0.
|
|
|
1138 */
|
|
|
1139 (result, field_index))
|
|
|
1140 {
|
|
|
1141 PGresult *R;
|
|
|
1142
|
|
|
1143 CHECK_PGRESULT (result);
|
|
|
1144 CHECK_INT (field_index);
|
|
|
1145 R = (XPGRESULT (result))->pgresult;
|
|
|
1146 PUKE_IF_NULL (R);
|
|
|
1147
|
|
|
1148 return build_ext_string (PQfname (R, XINT (field_index)), PG_OS_CODING);
|
|
|
1149 }
|
|
|
1150
|
|
|
1151 DEFUN ("pq-fnumber", Fpq_fnumber, 2, 2, 0, /*
|
|
|
1152 Return the number of fields (attributes) in each tuple of the query result.
|
|
|
1153 */
|
|
|
1154 (result, field_name))
|
|
|
1155 {
|
|
|
1156 PGresult *R;
|
|
|
1157 char *c_field_name;
|
|
|
1158
|
|
|
1159 CHECK_PGRESULT (result);
|
|
|
1160 CHECK_STRING (field_name);
|
|
|
1161 R = (XPGRESULT (result))->pgresult;
|
|
|
1162 PUKE_IF_NULL (R);
|
|
|
1163
|
|
|
1164 TO_EXTERNAL_FORMAT (LISP_STRING, field_name,
|
|
|
1165 C_STRING_ALLOCA, c_field_name, Qnative);
|
|
|
1166
|
|
|
1167 return make_int (PQfnumber (R, c_field_name));
|
|
|
1168 }
|
|
|
1169
|
|
|
1170 DEFUN ("pq-ftype", Fpq_ftype, 2, 2, 0, /*
|
|
|
1171 Return the field type associated with the given field index.
|
|
|
1172 The integer returned is the internal coding of the type. Field indices
|
|
|
1173 start at 0.
|
|
|
1174 */
|
|
|
1175 (result, field_num))
|
|
|
1176 {
|
|
|
1177 PGresult *R;
|
|
|
1178
|
|
|
1179 CHECK_PGRESULT (result);
|
|
|
1180 CHECK_INT (field_num);
|
|
|
1181 R = (XPGRESULT (result))->pgresult;
|
|
|
1182 PUKE_IF_NULL (R);
|
|
|
1183
|
|
|
1184 return make_int (PQftype (R, XINT (field_num)));
|
|
|
1185 }
|
|
|
1186
|
|
|
1187 DEFUN ("pq-fsize", Fpq_fsize, 2, 2, 0, /*
|
|
|
1188 Return the field size in bytes associated with the given field index.
|
|
|
1189 Field indices start at 0.
|
|
|
1190 */
|
|
|
1191 (result, field_index))
|
|
|
1192 {
|
|
|
1193 PGresult *R;
|
|
|
1194
|
|
|
1195 CHECK_PGRESULT (result);
|
|
|
1196 CHECK_INT (field_index);
|
|
|
1197 R = (XPGRESULT (result))->pgresult;
|
|
|
1198 PUKE_IF_NULL (R);
|
|
|
1199
|
|
|
1200 return make_int (PQftype (R, XINT (field_index)));
|
|
|
1201 }
|
|
|
1202
|
|
|
1203 DEFUN ("pq-fmod", Fpq_fmod, 2, 2, 0, /*
|
|
|
1204 Return the type modifier associated with a field.
|
|
|
1205 Field indices start at 0.
|
|
|
1206 */
|
|
|
1207 (result, field_index))
|
|
|
1208 {
|
|
|
1209 PGresult *R;
|
|
|
1210
|
|
|
1211 CHECK_PGRESULT (result);
|
|
|
1212 CHECK_INT (field_index);
|
|
|
1213 R = (XPGRESULT (result))->pgresult;
|
|
|
1214 PUKE_IF_NULL (R);
|
|
|
1215
|
|
|
1216 return make_int (PQfmod (R, XINT (field_index)));
|
|
|
1217 }
|
|
|
1218
|
|
|
1219 DEFUN ("pq-get-value", Fpq_get_value, 3, 3, 0, /*
|
|
|
1220 Return a single field (attribute) value of one tuple of a PGresult.
|
|
|
1221 Tuple and field indices start at 0.
|
|
|
1222 */
|
|
|
1223 (result, tup_num, field_num))
|
|
|
1224 {
|
|
|
1225 PGresult *R;
|
|
|
1226
|
|
|
1227 CHECK_PGRESULT (result);
|
|
|
1228 CHECK_INT (tup_num);
|
|
|
1229 CHECK_INT (field_num);
|
|
|
1230 R = (XPGRESULT (result))->pgresult;
|
|
|
1231 PUKE_IF_NULL (R);
|
|
|
1232
|
|
|
1233 return build_ext_string (PQgetvalue (R, XINT (tup_num), XINT (field_num)),
|
|
|
1234 PG_OS_CODING);
|
|
|
1235 }
|
|
|
1236
|
|
|
1237 DEFUN ("pq-get-length", Fpq_get_length, 3, 3, 0, /*
|
|
|
1238 Returns the length of a field value in bytes.
|
|
|
1239 If result is binary, i.e. a result of a binary portal, then the
|
|
|
1240 length returned does NOT include the size field of the varlena. (The
|
|
|
1241 data returned by PQgetvalue doesn't either.)
|
|
|
1242 */
|
|
|
1243 (result, tup_num, field_num))
|
|
|
1244 {
|
|
|
1245 PGresult *R;
|
|
|
1246
|
|
|
1247 CHECK_PGRESULT (result);
|
|
|
1248 CHECK_INT (tup_num);
|
|
|
1249 CHECK_INT (field_num);
|
|
|
1250 R = (XPGRESULT (result))->pgresult;
|
|
|
1251 PUKE_IF_NULL (R);
|
|
|
1252
|
|
|
1253 return make_int (PQgetlength (R, XINT (tup_num), XINT (field_num)));
|
|
|
1254 }
|
|
|
1255
|
|
|
1256 DEFUN ("pq-get-is-null", Fpq_get_is_null, 3, 3, 0, /*
|
|
|
1257 Returns the null status of a field value.
|
|
|
1258 */
|
|
|
1259 (result, tup_num, field_num))
|
|
|
1260 {
|
|
|
1261 PGresult *R;
|
|
|
1262
|
|
|
1263 CHECK_PGRESULT (result);
|
|
|
1264 CHECK_INT (tup_num);
|
|
|
1265 CHECK_INT (field_num);
|
|
|
1266 R = (XPGRESULT (result))->pgresult;
|
|
|
1267 PUKE_IF_NULL (R);
|
|
|
1268
|
|
|
1269 return PQgetisnull (R, XINT (tup_num), XINT (field_num)) ? Qt : Qnil;
|
|
|
1270 }
|
|
|
1271
|
|
|
1272 DEFUN ("pq-cmd-status", Fpq_cmd_status, 1, 1, 0, /*
|
|
|
1273 Returns the command status string from the SQL command that generated the result.
|
|
|
1274 */
|
|
|
1275 (result))
|
|
|
1276 {
|
|
|
1277 PGresult *R;
|
|
|
1278
|
|
|
1279 CHECK_PGRESULT (result);
|
|
|
1280 R = (XPGRESULT (result))->pgresult;
|
|
|
1281 PUKE_IF_NULL (R);
|
|
|
1282
|
|
|
1283 return build_ext_string (PQcmdStatus (R), PG_OS_CODING);
|
|
|
1284 }
|
|
|
1285
|
|
|
1286 DEFUN ("pq-cmd-tuples", Fpq_cmd_tuples, 1, 1, 0, /*
|
|
|
1287 Returns the number of rows affected by the SQL command.
|
|
|
1288 */
|
|
|
1289 (result))
|
|
|
1290 {
|
|
|
1291 PGresult *R;
|
|
|
1292
|
|
|
1293 CHECK_PGRESULT (result);
|
|
|
1294 R = (XPGRESULT (result))->pgresult;
|
|
|
1295 PUKE_IF_NULL (R);
|
|
|
1296
|
|
|
1297 return build_ext_string (PQcmdTuples (R), PG_OS_CODING);
|
|
|
1298 }
|
|
|
1299
|
|
|
1300 DEFUN ("pq-oid-value", Fpq_oid_value, 1, 1, 0, /*
|
|
|
1301 Returns the object id of the tuple inserted.
|
|
|
1302 */
|
|
|
1303 (result))
|
|
|
1304 {
|
|
|
1305 PGresult *R;
|
|
|
1306
|
|
|
1307 CHECK_PGRESULT (result);
|
|
|
1308 R = (XPGRESULT (result))->pgresult;
|
|
|
1309 PUKE_IF_NULL (R);
|
|
|
1310
|
|
|
1311 #ifdef HAVE_POSTGRESQLV7
|
|
|
1312 return make_int (PQoidValue (R));
|
|
|
1313 #else
|
|
|
1314 /* Use the old interface */
|
|
|
1315 return make_int (atoi (PQoidStatus (R)));
|
|
|
1316 #endif
|
|
|
1317 }
|
|
|
1318
|
|
|
1319 #ifdef HAVE_POSTGRESQLV7
|
|
|
1320 DEFUN ("pq-set-nonblocking", Fpq_set_nonblocking, 2, 2, 0, /*
|
|
|
1321 Sets the PGconn's database connection non-blocking if the arg is TRUE
|
|
|
1322 or makes it non-blocking if the arg is FALSE, this will not protect
|
|
|
1323 you from PQexec(), you'll only be safe when using the non-blocking API.
|
|
|
1324
|
|
|
1325 Needs to be called only on a connected database connection.
|
|
|
1326 */
|
|
|
1327 (conn, arg))
|
|
|
1328 {
|
|
|
1329 PGconn *P;
|
|
|
1330
|
|
|
1331 CHECK_PGCONN (conn);
|
|
|
1332 P = (XPGCONN (conn))->pgconn;
|
|
|
1333 CHECK_LIVE_CONNECTION (P);
|
|
|
1334
|
|
|
1335 return make_int (PQsetnonblocking (P, !NILP (arg)));
|
|
|
1336 }
|
|
|
1337
|
|
|
1338 DEFUN ("pq-is-nonblocking", Fpq_is_nonblocking, 1, 1, 0, /*
|
|
|
1339 Return the blocking status of the database connection.
|
|
|
1340 */
|
|
|
1341 (conn))
|
|
|
1342 {
|
|
|
1343 PGconn *P;
|
|
|
1344
|
|
|
1345 CHECK_PGCONN (conn);
|
|
|
1346 P = (XPGCONN (conn))->pgconn;
|
|
|
1347 CHECK_LIVE_CONNECTION (P);
|
|
|
1348
|
|
|
1349 return PQisnonblocking (P) ? Qt : Qnil;
|
|
|
1350 }
|
|
|
1351
|
|
|
1352 DEFUN ("pq-flush", Fpq_flush, 1, 1, 0, /*
|
|
|
1353 Force the write buffer to be written (or at least try).
|
|
|
1354 */
|
|
|
1355 (conn))
|
|
|
1356 {
|
|
|
1357 PGconn *P;
|
|
|
1358
|
|
|
1359 CHECK_PGCONN (conn);
|
|
|
1360 P = (XPGCONN (conn))->pgconn;
|
|
|
1361 CHECK_LIVE_CONNECTION (P);
|
|
|
1362
|
|
|
1363 return make_int (PQflush (P));
|
|
|
1364 }
|
|
|
1365 #endif
|
|
|
1366
|
|
|
1367 DEFUN ("pq-notifies", Fpq_notifies, 1, 1, 0, /*
|
|
|
1368 Return the latest async notification that has not yet been handled.
|
|
|
1369 If there has been a notification, then a list of two elements will be returned.
|
|
|
1370 The first element contains the relation name being notified, the second
|
|
|
1371 element contains the backend process ID number. nil is returned if there
|
|
|
1372 aren't any notifications to process.
|
|
|
1373 */
|
|
|
1374 (conn))
|
|
|
1375 {
|
|
|
1376 /* This function cannot GC */
|
|
|
1377 PGconn *P;
|
|
|
1378 PGnotify *PGN;
|
|
|
1379
|
|
|
1380 CHECK_PGCONN (conn);
|
|
|
1381 P = (XPGCONN (conn))->pgconn;
|
|
|
1382 CHECK_LIVE_CONNECTION (P);
|
|
|
1383
|
|
|
1384 PGN = PQnotifies (P);
|
|
|
1385 if (!PGN)
|
|
|
1386 return Qnil;
|
|
|
1387 else
|
|
|
1388 {
|
|
|
1389 Lisp_Object temp;
|
|
|
1390
|
|
|
1391 temp = list2 (build_ext_string (PGN->relname, PG_OS_CODING), make_int (PGN->be_pid));
|
|
|
1392 free ((void *)PGN);
|
|
|
1393 return temp;
|
|
|
1394 }
|
|
|
1395 }
|
|
|
1396
|
|
|
1397 #if defined (HAVE_POSTGRESQLV7) && defined(MULE)
|
|
|
1398 /* ###autoload */
|
|
|
1399 DEFUN ("pq-env-2-encoding", Fpq_env_2_encoding, 0, 0, 0, /*
|
|
|
1400 Get encoding id from environment variable PGCLIENTENCODING.
|
|
|
1401 */
|
|
|
1402 ())
|
|
|
1403 {
|
|
|
1404 return make_int (PQenv2encoding ());
|
|
|
1405 }
|
|
|
1406 #endif /* MULE */
|
|
|
1407
|
|
|
1408 DEFUN ("pq-lo-import", Fpq_lo_import, 2, 2, 0, /*
|
|
|
1409 */
|
|
|
1410 (conn, filename))
|
|
|
1411 {
|
|
|
1412 PGconn *P;
|
|
|
1413 char *c_filename;
|
|
|
1414
|
|
|
1415 CHECK_PGCONN (conn);
|
|
|
1416 CHECK_STRING (filename);
|
|
|
1417
|
|
|
1418 P = (XPGCONN (conn))->pgconn;
|
|
|
1419 CHECK_LIVE_CONNECTION (P);
|
|
|
1420
|
|
|
1421 TO_EXTERNAL_FORMAT (LISP_STRING, filename,
|
|
|
1422 C_STRING_ALLOCA, c_filename,
|
|
|
1423 Qfile_name);
|
|
|
1424
|
|
|
1425 return make_int ((int)lo_import (P, c_filename));
|
|
|
1426 }
|
|
|
1427
|
|
|
1428 DEFUN ("pq-lo-export", Fpq_lo_export, 3, 3, 0, /*
|
|
|
1429 */
|
|
|
1430 (conn, oid, filename))
|
|
|
1431 {
|
|
|
1432 PGconn *P;
|
|
|
1433 char *c_filename;
|
|
|
1434
|
|
|
1435 CHECK_PGCONN (conn);
|
|
|
1436 CHECK_INT (oid);
|
|
|
1437 CHECK_STRING (filename);
|
|
|
1438
|
|
|
1439 P = (XPGCONN (conn))->pgconn;
|
|
|
1440 CHECK_LIVE_CONNECTION (P);
|
|
|
1441
|
|
|
1442 TO_EXTERNAL_FORMAT (LISP_STRING, filename,
|
|
|
1443 C_STRING_ALLOCA, c_filename, Qfile_name);
|
|
|
1444
|
|
|
1445 return make_int ((int)lo_export (P, XINT (oid), c_filename));
|
|
|
1446 }
|
|
|
1447
|
|
|
1448 DEFUN ("pq-make-empty-pgresult", Fpq_make_empty_pgresult, 2, 2, 0, /*
|
|
|
1449 Make an empty PGresult object with the given status.
|
|
|
1450 */
|
|
|
1451 (conn, status))
|
|
|
1452 {
|
|
|
1453 PGconn *P;
|
|
|
1454 Lisp_PGresult *lpgr;
|
|
|
1455 PGresult *R;
|
|
|
1456 ExecStatusType est;
|
|
|
1457
|
|
|
1458 CHECK_PGCONN (conn);
|
|
|
1459 P = (XPGCONN (conn))->pgconn;
|
|
|
1460 CHECK_LIVE_CONNECTION (P); /* needed here? */
|
|
|
1461
|
|
|
1462 if (EQ (status, Qpgres_empty_query)) est = PGRES_EMPTY_QUERY;
|
|
|
1463 else if (EQ (status, Qpgres_command_ok)) est = PGRES_COMMAND_OK;
|
|
|
1464 else if (EQ (status, Qpgres_tuples_ok)) est = PGRES_TUPLES_OK;
|
|
|
1465 else if (EQ (status, Qpgres_copy_out)) est = PGRES_COPY_OUT;
|
|
|
1466 else if (EQ (status, Qpgres_copy_in)) est = PGRES_COPY_IN;
|
|
|
1467 else if (EQ (status, Qpgres_bad_response)) est = PGRES_BAD_RESPONSE;
|
|
|
1468 else if (EQ (status, Qpgres_nonfatal_error)) est = PGRES_NONFATAL_ERROR;
|
|
|
1469 else if (EQ (status, Qpgres_fatal_error)) est = PGRES_FATAL_ERROR;
|
|
|
1470 else invalid_constant ("bad status symbol", status);
|
|
|
1471
|
|
|
1472 R = PQmakeEmptyPGresult (P, est);
|
|
|
1473 if (!R) out_of_memory (0, Qunbound);
|
|
|
1474
|
|
|
1475 lpgr = allocate_pgresult ();
|
|
|
1476 lpgr->pgresult = R;
|
|
|
1477
|
|
|
1478 return make_pgresult (lpgr);
|
|
|
1479 }
|
|
|
1480
|
|
|
1481 DEFUN ("pq-get-line", Fpq_get_line, 1, 1, 0, /*
|
|
|
1482 Retrieve a line from server in copy in operation.
|
|
|
1483 The return value is a dotted pair where the cons cell is an integer code:
|
|
|
1484 -1: Copying is complete
|
|
|
1485 0: A record is complete
|
|
|
1486 1: A record is incomplete, it will be continued in the next `pq-get-line'
|
|
|
1487 operation.
|
|
|
1488 and the cdr cell is returned string data.
|
|
|
1489
|
|
|
1490 The copy operation is complete when the value `\.' (backslash dot) is
|
|
|
1491 returned.
|
|
|
1492 */
|
|
|
1493 (conn))
|
|
|
1494 {
|
|
|
1495 char buffer[BLCKSZ]; /* size of a Postgres disk block */
|
|
|
1496 PGconn *P;
|
|
|
1497 int ret;
|
|
|
1498
|
|
|
1499 CHECK_PGCONN (conn);
|
|
|
1500 P = (XPGCONN (conn))->pgconn;
|
|
|
1501 CHECK_LIVE_CONNECTION (P);
|
|
|
1502
|
|
|
1503 ret = PQgetline (P, buffer, sizeof (buffer));
|
|
|
1504
|
|
|
1505 return Fcons (make_int (ret), build_ext_string (buffer, PG_OS_CODING));
|
|
|
1506 }
|
|
|
1507
|
|
|
1508 DEFUN ("pq-put-line", Fpq_put_line, 2, 2, 0, /*
|
|
|
1509 Send a line to the server in copy out operation.
|
|
|
1510
|
|
|
1511 Returns t if the operation succeeded, nil otherwise.
|
|
|
1512 */
|
|
|
1513 (conn, string))
|
|
|
1514 {
|
|
|
1515 PGconn *P;
|
|
|
1516 char *c_string;
|
|
|
1517
|
|
|
1518 CHECK_PGCONN (conn);
|
|
|
1519 CHECK_STRING (string);
|
|
|
1520
|
|
|
1521 P = (XPGCONN (conn))->pgconn;
|
|
|
1522 CHECK_LIVE_CONNECTION (P);
|
|
|
1523 TO_EXTERNAL_FORMAT (LISP_STRING, string,
|
|
|
1524 C_STRING_ALLOCA, c_string, Qnative);
|
|
|
1525
|
|
|
1526 return !PQputline (P, c_string) ? Qt : Qnil;
|
|
|
1527 }
|
|
|
1528
|
|
|
1529 DEFUN ("pq-get-line-async", Fpq_get_line_async, 1, 1, 0, /*
|
|
|
1530 Get a line from the server in copy in operation asynchronously.
|
|
|
1531
|
|
|
1532 This routine is for applications that want to do "COPY <rel> to stdout"
|
|
|
1533 asynchronously, that is without blocking. Having issued the COPY command
|
|
|
1534 and gotten a PGRES_COPY_OUT response, the app should call PQconsumeInput
|
|
|
1535 and this routine until the end-of-data signal is detected. Unlike
|
|
|
1536 PQgetline, this routine takes responsibility for detecting end-of-data.
|
|
|
1537
|
|
|
1538 On each call, PQgetlineAsync will return data if a complete newline-
|
|
|
1539 terminated data line is available in libpq's input buffer, or if the
|
|
|
1540 incoming data line is too long to fit in the buffer offered by the caller.
|
|
|
1541 Otherwise, no data is returned until the rest of the line arrives.
|
|
|
1542
|
|
|
1543 If -1 is returned, the end-of-data signal has been recognized (and removed
|
|
|
1544 from libpq's input buffer). The caller *must* next call PQendcopy and
|
|
|
1545 then return to normal processing.
|
|
|
1546
|
|
|
1547 RETURNS:
|
|
|
1548 -1 if the end-of-copy-data marker has been recognized
|
|
|
1549 0 if no data is available
|
|
|
1550 >0 the number of bytes returned.
|
|
|
1551 The data returned will not extend beyond a newline character. If possible
|
|
|
1552 a whole line will be returned at one time. But if the buffer offered by
|
|
|
1553 the caller is too small to hold a line sent by the backend, then a partial
|
|
|
1554 data line will be returned. This can be detected by testing whether the
|
|
|
1555 last returned byte is '\n' or not.
|
|
|
1556 The returned string is *not* null-terminated.
|
|
|
1557 */
|
|
|
1558 (conn))
|
|
|
1559 {
|
|
|
1560 PGconn *P;
|
|
|
1561 char buffer[BLCKSZ];
|
|
|
1562 int ret;
|
|
|
1563
|
|
|
1564 CHECK_PGCONN (conn);
|
|
|
1565
|
|
|
1566 P = (XPGCONN (conn))->pgconn;
|
|
|
1567 CHECK_LIVE_CONNECTION (P);
|
|
|
1568
|
|
|
1569 ret = PQgetlineAsync (P, buffer, sizeof (buffer));
|
|
|
1570
|
|
|
1571 if (ret == -1) return Qt; /* done! */
|
|
|
1572 else if (!ret) return Qnil; /* no data yet */
|
|
|
1573 else return Fcons (make_int (ret),
|
|
|
1574 make_ext_string ((Extbyte *) buffer, ret, PG_OS_CODING));
|
|
|
1575 }
|
|
|
1576
|
|
|
1577 DEFUN ("pq-put-nbytes", Fpq_put_nbytes, 2, 2, 0, /*
|
|
|
1578 Asynchronous copy out.
|
|
|
1579 */
|
|
|
1580 (conn, data))
|
|
|
1581 {
|
|
|
1582 /* NULs are not allowed. I don't think this matters at this time. */
|
|
|
1583 PGconn *P;
|
|
|
1584 char *c_data;
|
|
|
1585
|
|
|
1586 CHECK_PGCONN (conn);
|
|
|
1587 CHECK_STRING (data);
|
|
|
1588
|
|
|
1589 P = (XPGCONN (conn))->pgconn;
|
|
|
1590 CHECK_LIVE_CONNECTION (P);
|
|
|
1591 TO_EXTERNAL_FORMAT (LISP_STRING, data,
|
|
|
1592 C_STRING_ALLOCA, c_data, Qnative);
|
|
|
1593
|
|
|
1594 return !PQputnbytes (P, c_data, strlen (c_data)) ? Qt : Qnil;
|
|
|
1595 }
|
|
|
1596
|
|
|
1597 DEFUN ("pq-end-copy", Fpq_end_copy, 1, 1, 0, /*
|
|
|
1598 End a copying operation.
|
|
|
1599 */
|
|
|
1600 (conn))
|
|
|
1601 {
|
|
|
1602 PGconn *P;
|
|
|
1603
|
|
|
1604 CHECK_PGCONN (conn);
|
|
|
1605 P = (XPGCONN (conn))->pgconn;
|
|
|
1606 CHECK_LIVE_CONNECTION (P);
|
|
|
1607
|
|
|
1608 return PQendcopy (P) ? Qt : Qnil;
|
|
|
1609 }
|
|
|
1610
|
|
|
1611 void
|
|
|
1612 syms_of_postgresql(void)
|
|
|
1613 {
|
|
|
1614 #ifndef RUNNING_XEMACS_21_1
|
|
|
1615 INIT_LRECORD_IMPLEMENTATION (pgconn);
|
|
|
1616 INIT_LRECORD_IMPLEMENTATION (pgresult);
|
|
|
1617 #endif
|
|
|
1618 DEFSYMBOL (Qpostgresql);
|
|
|
1619
|
|
|
1620 /* opaque exported types */
|
|
|
1621 DEFSYMBOL (Qpgconnp);
|
|
|
1622 DEFSYMBOL (Qpgresultp);
|
|
|
1623
|
|
|
1624 /* connection status types */
|
|
|
1625 defsymbol (&Qpg_connection_ok, "pg::connection-ok");
|
|
|
1626 defsymbol (&Qpg_connection_bad, "pg::connection-bad");
|
|
|
1627 defsymbol (&Qpg_connection_started, "pg::connection-started");
|
|
|
1628 defsymbol (&Qpg_connection_made, "pg::connection-made");
|
|
|
1629 defsymbol (&Qpg_connection_awaiting_response, "pg::connection-awaiting-response");
|
|
|
1630 defsymbol (&Qpg_connection_auth_ok, "pg::connection-auth-ok");
|
|
|
1631 defsymbol (&Qpg_connection_setenv, "pg::connection-setenv");
|
|
|
1632
|
|
|
1633 /* Fields of PGconn */
|
|
|
1634 defsymbol (&Qpqdb, "pq::db");
|
|
|
1635 defsymbol (&Qpquser, "pq::user");
|
|
|
1636 defsymbol (&Qpqpass, "pq::pass");
|
|
|
1637 defsymbol (&Qpqhost, "pq::host");
|
|
|
1638 defsymbol (&Qpqport, "pq::port");
|
|
|
1639 defsymbol (&Qpqtty, "pq::tty");
|
|
|
1640 defsymbol (&Qpqoptions, "pq::options");
|
|
|
1641 defsymbol (&Qpqstatus, "pq::status");
|
|
|
1642 defsymbol (&Qpqerrormessage, "pq::error-message");
|
|
|
1643 defsymbol (&Qpqbackendpid, "pq::backend-pid");
|
|
|
1644
|
|
|
1645 /* Query status results */
|
|
|
1646 defsymbol (&Qpgres_empty_query, "pgres::empty-query");
|
|
|
1647 defsymbol (&Qpgres_command_ok, "pgres::command-ok");
|
|
|
1648 defsymbol (&Qpgres_tuples_ok, "pgres::tuples-ok");
|
|
|
1649 defsymbol (&Qpgres_copy_out, "pgres::copy-out");
|
|
|
1650 defsymbol (&Qpgres_copy_in, "pgres::copy-in");
|
|
|
1651 defsymbol (&Qpgres_bad_response, "pgres::bad-response");
|
|
|
1652 defsymbol (&Qpgres_nonfatal_error, "pgres::nonfatal-error");
|
|
|
1653 defsymbol (&Qpgres_fatal_error, "pgres::fatal-error");
|
|
|
1654
|
|
|
1655 /* Poll status results */
|
|
|
1656 defsymbol (&Qpgres_polling_failed, "pgres::polling-failed");
|
|
|
1657 defsymbol (&Qpgres_polling_reading, "pgres::polling-reading");
|
|
|
1658 defsymbol (&Qpgres_polling_writing, "pgres::polling-writing");
|
|
|
1659 defsymbol (&Qpgres_polling_ok, "pgres::polling-ok");
|
|
|
1660 defsymbol (&Qpgres_polling_active, "pgres::polling-active");
|
|
|
1661
|
|
|
1662 #ifdef HAVE_POSTGRESQLV7
|
|
|
1663 DEFSUBR (Fpq_connect_start);
|
|
|
1664 DEFSUBR (Fpq_connect_poll);
|
|
|
1665 #ifdef MULE
|
|
|
1666 DEFSUBR (Fpq_client_encoding);
|
|
|
1667 DEFSUBR (Fpq_set_client_encoding);
|
|
|
1668 #endif /* MULE */
|
|
|
1669 #endif /* HAVE_POSTGRESQLV7 */
|
|
|
1670 DEFSUBR (Fpq_conn_defaults);
|
|
|
1671 DEFSUBR (Fpq_connectdb);
|
|
|
1672 DEFSUBR (Fpq_finish);
|
|
|
1673 DEFSUBR (Fpq_clear);
|
|
|
1674 DEFSUBR (Fpq_is_busy);
|
|
|
1675 DEFSUBR (Fpq_consume_input);
|
|
|
1676
|
|
|
1677 DEFSUBR (Fpq_reset);
|
|
|
1678 #ifdef HAVE_POSTGRESQLV7
|
|
|
1679 DEFSUBR (Fpq_reset_start);
|
|
|
1680 DEFSUBR (Fpq_reset_poll);
|
|
|
1681 #endif
|
|
|
1682 DEFSUBR (Fpq_request_cancel);
|
|
|
1683 DEFSUBR (Fpq_pgconn);
|
|
|
1684
|
|
|
1685 DEFSUBR (Fpq_exec);
|
|
|
1686 DEFSUBR (Fpq_send_query);
|
|
|
1687 DEFSUBR (Fpq_get_result);
|
|
|
1688 DEFSUBR (Fpq_result_status);
|
|
|
1689 DEFSUBR (Fpq_res_status);
|
|
|
1690 DEFSUBR (Fpq_result_error_message);
|
|
|
1691 DEFSUBR (Fpq_ntuples);
|
|
|
1692 DEFSUBR (Fpq_nfields);
|
|
|
1693 DEFSUBR (Fpq_binary_tuples);
|
|
|
1694 DEFSUBR (Fpq_fname);
|
|
|
1695 DEFSUBR (Fpq_fnumber);
|
|
|
1696 DEFSUBR (Fpq_ftype);
|
|
|
1697 DEFSUBR (Fpq_fsize);
|
|
|
1698 DEFSUBR (Fpq_fmod);
|
|
|
1699 /***/
|
|
|
1700 DEFSUBR (Fpq_get_value);
|
|
|
1701 DEFSUBR (Fpq_get_length);
|
|
|
1702 DEFSUBR (Fpq_get_is_null);
|
|
|
1703 DEFSUBR (Fpq_cmd_status);
|
|
|
1704 DEFSUBR (Fpq_cmd_tuples);
|
|
|
1705 DEFSUBR (Fpq_oid_value);
|
|
|
1706
|
|
|
1707 #ifdef HAVE_POSTGRESQLV7
|
|
|
1708 DEFSUBR (Fpq_set_nonblocking);
|
|
|
1709 DEFSUBR (Fpq_is_nonblocking);
|
|
|
1710 DEFSUBR (Fpq_flush);
|
|
|
1711 #endif
|
|
|
1712 DEFSUBR (Fpq_notifies);
|
|
|
1713
|
|
|
1714 #if defined (HAVE_POSTGRESQLV7) && defined(MULE)
|
|
|
1715 DEFSUBR (Fpq_env_2_encoding);
|
|
|
1716 #endif
|
|
|
1717
|
|
|
1718 DEFSUBR (Fpq_lo_import);
|
|
|
1719 DEFSUBR (Fpq_lo_export);
|
|
|
1720
|
|
|
1721 DEFSUBR (Fpq_make_empty_pgresult);
|
|
|
1722
|
|
|
1723 /* copy in/out functions */
|
|
|
1724 DEFSUBR (Fpq_get_line);
|
|
|
1725 DEFSUBR (Fpq_put_line);
|
|
|
1726 DEFSUBR (Fpq_get_line_async);
|
|
|
1727 DEFSUBR (Fpq_put_nbytes);
|
|
|
1728 DEFSUBR (Fpq_end_copy);
|
|
|
1729 }
|
|
|
1730
|
|
|
1731 void
|
|
|
1732 vars_of_postgresql(void)
|
|
|
1733 {
|
|
|
1734 Fprovide (Qpostgresql);
|
|
|
1735 #ifdef HAVE_POSTGRESQLV7
|
|
|
1736 Fprovide (intern ("postgresqlv7"));
|
|
|
1737 #endif
|
|
|
1738 #ifndef RUNNING_XEMACS_21_1
|
|
|
1739 Vpg_coding_system = Qnative;
|
|
|
1740 DEFVAR_LISP ("pg-coding-system", &Vpg_coding_system /*
|
|
|
1741 Default Postgres client coding system.
|
|
|
1742 */ );
|
|
|
1743 #endif
|
|
|
1744
|
|
|
1745 DEFVAR_LISP ("pg:host", &VXPGHOST /*
|
|
|
1746 Default PostgreSQL server name.
|
|
|
1747 If not set, the server running on the local host is used. The
|
|
|
1748 initial value is set from the PGHOST environment variable.
|
|
|
1749 */ );
|
|
|
1750
|
|
|
1751 DEFVAR_LISP ("pg:user", &VXPGUSER /*
|
|
|
1752 Default PostgreSQL user name.
|
|
|
1753 This value is used when connecting to a database for authentication.
|
|
|
1754 The initial value is set from the PGUSER environment variable.
|
|
|
1755 */ );
|
|
|
1756
|
|
|
1757 DEFVAR_LISP ("pg:options", &VXPGOPTIONS /*
|
|
|
1758 Default PostgreSQL user name.
|
|
|
1759 This value is used when connecting to a database for authentication.
|
|
|
1760 The initial value is set from the PGUSER environment variable.
|
|
|
1761 */ );
|
|
|
1762
|
|
|
1763 DEFVAR_LISP ("pg:port", &VXPGPORT /*
|
|
|
1764 Default port to connect to PostgreSQL backend.
|
|
|
1765 This value is used when connecting to a database.
|
|
|
1766 The initial value is set from the PGPORT environment variable.
|
|
|
1767 */ );
|
|
|
1768
|
|
|
1769 DEFVAR_LISP ("pg:tty", &VXPGTTY /*
|
|
|
1770 Default debugging TTY.
|
|
|
1771 There is no useful setting of this variable in the XEmacs Lisp API.
|
|
|
1772 The initial value is set from the PGTTY environment variable.
|
|
|
1773 */ );
|
|
|
1774
|
|
|
1775 DEFVAR_LISP ("pg:database", &VXPGDATABASE /*
|
|
|
1776 Default database to connect to.
|
|
|
1777 The initial value is set from the PGDATABASE environment variable.
|
|
|
1778 */ );
|
|
|
1779
|
|
|
1780 DEFVAR_LISP ("pg:realm", &VXPGREALM /*
|
|
|
1781 Default kerberos realm to use for authentication.
|
|
|
1782 The initial value is set from the PGREALM environment variable.
|
|
|
1783 */ );
|
|
|
1784
|
|
|
1785 #ifdef MULE
|
|
|
1786 /* It's not clear whether this is any use. My intent is to
|
|
|
1787 autodetect the coding system from the database. */
|
|
|
1788 DEFVAR_LISP ("pg:client-encoding", &VXPGCLIENTENCODING /*
|
|
|
1789 Default client encoding to use.
|
|
|
1790 The initial value is set from the PGCLIENTENCODING environment variable.
|
|
|
1791 */ );
|
|
|
1792 #endif
|
|
|
1793
|
|
|
1794 #if !defined(HAVE_POSTGRESQLV7)
|
|
|
1795 DEFVAR_LISP ("pg:authtype", &VXPGAUTHTYPE /*
|
|
|
1796 Default authentication to use.
|
|
|
1797 The initial value is set from the PGAUTHTYPE environment variable.
|
|
|
1798
|
|
|
1799 WARNING: This variable has gone away in versions of PostgreSQL newer
|
|
|
1800 than 6.5.
|
|
|
1801 */ );
|
|
|
1802 #endif
|
|
|
1803
|
|
|
1804 DEFVAR_LISP ("pg:geqo", &VXPGGEQO /*
|
|
|
1805 Genetic Query Optimizer options.
|
|
|
1806 The initial value is set from the PGGEQO environment variable.
|
|
|
1807 */ );
|
|
|
1808
|
|
|
1809 DEFVAR_LISP ("pg:cost-index", &VXPGCOSTINDEX /*
|
|
|
1810 Default cost index options.
|
|
|
1811 The initial value is set from the PGCOSTINDEX environment variable.
|
|
|
1812 */ );
|
|
|
1813
|
|
|
1814 DEFVAR_LISP ("pg:cost-heap", &VXPGCOSTHEAP /*
|
|
|
1815 Default cost heap options.
|
|
|
1816 The initial value is set from the PGCOSTHEAP environment variable.
|
|
|
1817 */ );
|
|
|
1818
|
|
|
1819 DEFVAR_LISP ("pg:tz", &VXPGTZ /*
|
|
|
1820 Default timezone to use.
|
|
|
1821 The initial value is set from the PGTZ environment variable.
|
|
|
1822 */ );
|
|
|
1823
|
|
|
1824 DEFVAR_LISP ("pg:date-style", &VXPGDATESTYLE /*
|
|
|
1825 Default date style to use.
|
|
|
1826 The initial value is set from the PGDATESTYLE environment variable.
|
|
|
1827 */ );
|
|
|
1828
|
|
|
1829 #ifdef HAVE_SHLIB
|
|
|
1830 /* If we are building this as a module, we need the initializing function to
|
|
|
1831 run at module load time. */
|
|
|
1832 init_postgresql_from_environment ();
|
|
|
1833 #endif
|
|
|
1834 }
|
|
|
1835
|
|
|
1836 /* These initializations should not be done at dump-time. */
|
|
|
1837 void
|
|
|
1838 init_postgresql_from_environment (void)
|
|
|
1839 {
|
|
|
1840 Ibyte *p;
|
|
|
1841
|
|
|
1842 #define FROB(envvar, var) \
|
|
|
1843 if ((p = egetenv (envvar))) \
|
|
|
1844 var = build_intstring (p); \
|
|
|
1845 else \
|
|
|
1846 var = Qnil
|
|
|
1847
|
|
|
1848 if (initialized)
|
|
|
1849 {
|
|
|
1850 FROB ("PGHOST", VXPGHOST);
|
|
|
1851 FROB ("PGUSER", VXPGUSER);
|
|
|
1852 FROB ("PGOPTIONS", VXPGOPTIONS);
|
|
|
1853
|
|
|
1854 if ((p = egetenv ("PGPORT")))
|
|
|
1855 VXPGPORT = make_int (atoi ((char *) p));
|
|
|
1856 else
|
|
|
1857 VXPGPORT = Qnil;
|
|
|
1858
|
|
|
1859 FROB ("PGTTY", VXPGTTY);
|
|
|
1860 FROB ("PGDATABASE", VXPGDATABASE);
|
|
|
1861 FROB ("PGREALM", VXPGREALM);
|
|
|
1862 #ifdef MULE
|
|
|
1863 /* It's not clear whether this is any use. My intent is to
|
|
|
1864 autodetect the coding system from the database. */
|
|
|
1865 FROB ("PGCLIENTENCODING", VXPGCLIENTENCODING);
|
|
|
1866 #endif
|
|
|
1867
|
|
|
1868 #if !defined(HAVE_POSTGRESQLV7)
|
|
|
1869 FROB ("PGAUTHTYPE", VXPGAUTHTYPE);
|
|
|
1870 #endif
|
|
|
1871
|
|
|
1872 FROB ("PGGEQO", VXPGGEQO);
|
|
|
1873 FROB ("PGCOSTINDEX", VXPGCOSTINDEX);
|
|
|
1874 FROB ("PGCOSTHEAP", VXPGCOSTHEAP);
|
|
|
1875 FROB ("PGTZ", VXPGTZ);
|
|
|
1876 FROB ("PGDATESTYLE", VXPGDATESTYLE);
|
|
|
1877 #undef FROB
|
|
|
1878 }
|
|
|
1879 }
|
|
|
1880
|
|
|
1881 #ifdef HAVE_SHLIB
|
|
|
1882 void
|
|
|
1883 unload_postgresql (void)
|
|
|
1884 {
|
|
|
1885 #ifndef RUNNING_XEMACS_21_1
|
|
|
1886 /* Remove defined types */
|
|
|
1887 UNDEF_LRECORD_IMPLEMENTATION (pgconn);
|
|
|
1888 UNDEF_LRECORD_IMPLEMENTATION (pgresult);
|
|
|
1889 #endif
|
|
|
1890
|
|
|
1891 /* Remove staticpro'ing of symbols */
|
|
|
1892 unstaticpro_nodump (&Qpostgresql);
|
|
|
1893 unstaticpro_nodump (&Qpgconnp);
|
|
|
1894 unstaticpro_nodump (&Qpgresultp);
|
|
|
1895 unstaticpro_nodump (&Qpg_connection_ok);
|
|
|
1896 unstaticpro_nodump (&Qpg_connection_bad);
|
|
|
1897 unstaticpro_nodump (&Qpg_connection_started);
|
|
|
1898 unstaticpro_nodump (&Qpg_connection_made);
|
|
|
1899 unstaticpro_nodump (&Qpg_connection_awaiting_response);
|
|
|
1900 unstaticpro_nodump (&Qpg_connection_auth_ok);
|
|
|
1901 unstaticpro_nodump (&Qpg_connection_setenv);
|
|
|
1902 unstaticpro_nodump (&Qpqdb);
|
|
|
1903 unstaticpro_nodump (&Qpquser);
|
|
|
1904 unstaticpro_nodump (&Qpqpass);
|
|
|
1905 unstaticpro_nodump (&Qpqhost);
|
|
|
1906 unstaticpro_nodump (&Qpqport);
|
|
|
1907 unstaticpro_nodump (&Qpqtty);
|
|
|
1908 unstaticpro_nodump (&Qpqoptions);
|
|
|
1909 unstaticpro_nodump (&Qpqstatus);
|
|
|
1910 unstaticpro_nodump (&Qpqerrormessage);
|
|
|
1911 unstaticpro_nodump (&Qpqbackendpid);
|
|
|
1912 unstaticpro_nodump (&Qpgres_empty_query);
|
|
|
1913 unstaticpro_nodump (&Qpgres_command_ok);
|
|
|
1914 unstaticpro_nodump (&Qpgres_tuples_ok);
|
|
|
1915 unstaticpro_nodump (&Qpgres_copy_out);
|
|
|
1916 unstaticpro_nodump (&Qpgres_copy_in);
|
|
|
1917 unstaticpro_nodump (&Qpgres_bad_response);
|
|
|
1918 unstaticpro_nodump (&Qpgres_nonfatal_error);
|
|
|
1919 unstaticpro_nodump (&Qpgres_fatal_error);
|
|
|
1920 unstaticpro_nodump (&Qpgres_polling_failed);
|
|
|
1921 unstaticpro_nodump (&Qpgres_polling_reading);
|
|
|
1922 unstaticpro_nodump (&Qpgres_polling_writing);
|
|
|
1923 unstaticpro_nodump (&Qpgres_polling_ok);
|
|
|
1924 unstaticpro_nodump (&Qpgres_polling_active);
|
|
|
1925 }
|
|
|
1926 #endif /* HAVE_SHLIB */
|
