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