Mercurial > hg > xemacs-beta
annotate modules/postgresql/postgresql.c @ 5293:63f247c5da0a
In emodules_load(), dereference f = dll_variable() once more.
We then use EXTERNAL_TO_ITEXT on it, which returns an alloca'd
string, so I delete the unneeded alloca copy statements.
Fixes error reported by Anders Odberg, confirmed in
<rfawrpfhm3l.fsf@fangorn.uio.no>.
| author | Stephen J. Turnbull <stephen@xemacs.org> |
|---|---|
| date | Mon, 18 Oct 2010 23:43:03 +0900 |
| parents | f965e31a35f0 |
| children | 8bda66cd0414 |
| rev | line source |
|---|---|
| 996 | 1 /* |
| 2 postgresql.c -- Emacs Lisp binding to libpq.so | |
| 3 Copyright (C) 2000 Electrotechnical Laboratory, JAPAN. | |
| 4 Licensed to the Free Software Foundation. | |
| 5 | |
| 3820 | 6 Author: SL Baur <steve@xemacs.org> |
| 7 Maintainer: SL Baur <steve@xemacs.org> | |
| 996 | 8 |
| 9 Please send patches to this file to me first before submitting them to | |
| 10 xemacs-patches. | |
| 11 | |
| 12 | |
| 13 KNOWN PROBLEMS (Last update 15-March-2000) | |
| 14 + None. | |
| 15 | |
| 16 Implementation notes: | |
| 17 0. Supported PostgreSQL versions | |
| 18 This code was developed against libpq-6.5.3 and libpq-7.0-beta1. Earlier | |
| 19 versions may work. V7 support is more complete than V6.5 support. | |
| 20 1. Mule | |
| 21 Non-ASCII databases have been tested on both 6.5 and 7.0. | |
| 22 2. Asynchronous Operation | |
| 23 Starting with libpq-7.0, an asynchronous interface is offered. This | |
| 24 binding supports the asynchronous calls to a limited extent. Since the | |
| 25 XEmacs 21.2 core does not support a sensible interface to add managed but | |
| 26 unreadable (by XEmacs) file descriptors to the main select code, polling | |
| 27 is required to drive the asynchronous calls. XtAppAddInput would work | |
| 28 fine, but we want to be able to use the database when running strictly in | |
| 29 tty mode. | |
| 30 3. Completeness | |
| 31 Various calls have been deliberately not exported to Lisp. The | |
| 32 unexported calls are either left-over backwards compatibility code that | |
| 33 aren't needed, calls that cannot be implemented sensibly, or calls that | |
| 34 cannot be implemented safely. A list of all global functions in libpq | |
| 35 but not exported to Lisp is below. | |
| 36 4. Policy | |
| 37 This interface tries very hard to not set any policy towards how database | |
| 38 code in Emacs Lisp will be written. | |
| 39 5. Documentation | |
| 40 For full lisp programming documentation, see the XEmacs Lisp Reference | |
| 41 Manual. For PostgreSQL documentation, see the PostgreSQL distribution. | |
| 42 | |
| 43 TODO (in rough order of priority): | |
| 44 1. Asynchronous notifies need to be implemented to the extent they can be. | |
| 45 2. The large object interface needs work with Emacs buffers in addition | |
| 46 to files. Need two functions buffer->large_object, and large_object-> | |
| 47 buffer. | |
| 48 */ | |
| 49 | |
| 50 /* | |
| 51 Unimplemented functions: [TODO] | |
| 52 PQsetNoticeProcessor | |
| 53 | |
| 54 Implemented, but undocumented functions: [TODO] | |
| 55 PQgetline (copy in/out) | |
| 56 PQputline (copy in/out) | |
| 57 PQgetlineAsync (copy in/out Asynch.) | |
| 58 PQputnbytes (copy in/out Asynch.) | |
| 59 PQendcopy (copy in/out) | |
| 60 | |
| 61 Unsupported functions: | |
| 62 PQsetdbLogin -- This function is deprecated, has a subset of the | |
| 63 functionality of PQconnectdb, and is better done in Lisp. | |
| 64 PQsetdb -- Same as for PQsetdbLogin | |
| 65 PQsocket -- Abstraction error, file descriptors should not be leaked | |
| 66 into Lisp code | |
| 67 PQprint -- print to a file descriptor, deprecated, better done in Lisp | |
| 68 PQdisplayTuples -- deprecated | |
| 69 PQprintTuples -- really, really deprecated | |
| 70 PQmblen -- Returns the length in bytes of multibyte character encoded | |
| 71 string. | |
| 72 PQtrace -- controls debug print tracing to a tty. | |
| 73 PQuntrace -- Ditto. I don't see any way to do this sensibly. | |
| 74 PQoidStatus -- deprecated and nearly identical to PQoidValue | |
| 75 PQfn -- "Fast path" interface | |
| 76 lo_open (large object) [*] | |
| 77 lo_close (large object) [*] | |
| 78 lo_read (large object) [*] | |
| 79 lo_write (large object) [*] | |
| 80 lo_lseek (large object) [*] | |
| 81 lo_creat (large object) [*] | |
| 82 lo_tell (large object) [*] | |
| 83 lo_unlink (large object) [*] | |
| 84 */ | |
| 85 | |
| 86 #include <config.h> | |
| 87 | |
| 88 /* This must be portable with XEmacs 21.1 so long as it is the official | |
| 89 released version of XEmacs and provides the basis of InfoDock. The | |
| 90 interface to lcrecord handling has changed with 21.2, so unfortunately | |
| 91 we will need a few snippets of backwards compatibility code. | |
| 92 */ | |
|
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93 #if (EMACS_MAJOR_VERSION == 21) && (EMACS_MINOR_VERSION <= 1) |
| 996 | 94 #define RUNNING_XEMACS_21_1 1 |
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95 #elif (EMACS_MAJOR_VERSION == 21) && (EMACS_MINOR_VERSION <= 4) |
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96 #define RUNNING_XEMACS_21_4 1 |
| 996 | 97 #endif |
| 98 | |
| 99 /* #define POSTGRES_LO_IMPORT_IS_VOID 1 */ | |
| 100 | |
| 101 #include "lisp.h" | |
| 102 | |
| 103 #include "buffer.h" | |
| 104 #include "postgresql.h" | |
| 105 #include "process.h" | |
| 1632 | 106 #ifdef HAVE_SHLIB |
| 107 # include "emodules.h" | |
| 108 #endif | |
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109 #include "sysdep.h" |
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110 #include "sysfile.h" |
| 996 | 111 |
| 112 #ifdef RUNNING_XEMACS_21_1 /* handle interface changes */ | |
| 113 #define PG_OS_CODING FORMAT_FILENAME | |
| 114 #define TO_EXTERNAL_FORMAT(a,from,b,to,c) GET_C_STRING_EXT_DATA_ALLOCA(from,FORMAT_FILENAME,to) | |
| 115 #else | |
| 116 #ifdef MULE | |
| 117 #define PG_OS_CODING get_coding_system_for_text_file (Vpg_coding_system, 1) | |
| 118 #else | |
| 119 #define PG_OS_CODING Qnative | |
| 120 #endif | |
| 121 Lisp_Object Vpg_coding_system; | |
| 122 #endif | |
| 123 | |
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124 #define CHECK_LIVE_CONNECTION(P) \ |
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125 do \ |
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126 { \ |
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127 if (!P || (PQstatus (P) != CONNECTION_OK)) \ |
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128 { \ |
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129 Lisp_Object err; \ |
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130 \ |
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131 if (P) \ |
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132 err = build_extstring (PQerrorMessage (P), PG_OS_CODING); \ |
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133 else \ |
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134 err = build_msg_string ("Bad value"); \ |
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135 signal_error (Qprocess_error, "Dead connection", err); \ |
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136 } \ |
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137 } \ |
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138 while (0) |
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139 |
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140 #define PUKE_IF_NULL(p) \ |
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141 do \ |
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142 { \ |
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143 if (!p) signal_error (Qinvalid_argument, "Bad value", Qunbound); \ |
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144 } \ |
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145 while (0) |
| 996 | 146 |
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147 #define SIGNAL_ERROR(p, reason) \ |
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148 do \ |
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149 { \ |
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150 signal_error (Qprocess_error, reason, \ |
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151 build_extstring (PQerrorMessage (p), PG_OS_CODING)); \ |
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152 } \ |
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153 while (0) |
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154 |
| 996 | 155 static Lisp_Object VXPGHOST; |
| 156 static Lisp_Object VXPGUSER; | |
| 157 static Lisp_Object VXPGOPTIONS; | |
| 158 static Lisp_Object VXPGPORT; | |
| 159 static Lisp_Object VXPGTTY; /* This needs to be blanked! */ | |
| 160 static Lisp_Object VXPGDATABASE; | |
| 161 static Lisp_Object VXPGREALM; | |
| 162 #ifdef MULE | |
| 163 static Lisp_Object VXPGCLIENTENCODING; | |
| 164 #endif /* MULE */ | |
| 165 | |
| 166 /* Other variables: | |
| 167 PGAUTHTYPE -- not used after PostgreSQL 6.5 | |
| 168 PGGEQO | |
| 169 PGCOSTINDEX | |
| 170 PGCOSTHEAP | |
| 171 PGTZ | |
| 172 PGDATESTYLE | |
| 173 */ | |
| 174 #ifndef HAVE_POSTGRESQLV7 | |
| 175 static Lisp_Object VXPGAUTHTYPE; | |
| 176 #endif | |
| 177 static Lisp_Object VXPGGEQO, VXPGCOSTINDEX, VXPGCOSTHEAP, VXPGTZ, VXPGDATESTYLE; | |
| 178 | |
| 179 static Lisp_Object Qpostgresql; | |
| 180 static Lisp_Object Qpg_connection_ok, Qpg_connection_bad; | |
| 181 static Lisp_Object Qpg_connection_started, Qpg_connection_made; | |
| 182 static Lisp_Object Qpg_connection_awaiting_response, Qpg_connection_auth_ok; | |
| 183 static Lisp_Object Qpg_connection_setenv; | |
| 184 | |
| 185 static Lisp_Object Qpqdb, Qpquser, Qpqpass, Qpqhost, Qpqport, Qpqtty; | |
| 186 static Lisp_Object Qpqoptions, Qpqstatus, Qpqerrormessage, Qpqbackendpid; | |
| 187 | |
| 188 static Lisp_Object Qpgres_empty_query, Qpgres_command_ok, Qpgres_tuples_ok; | |
| 189 static Lisp_Object Qpgres_copy_out, Qpgres_copy_in, Qpgres_bad_response; | |
| 190 static Lisp_Object Qpgres_nonfatal_error, Qpgres_fatal_error; | |
| 191 | |
| 192 static Lisp_Object Qpgres_polling_failed, Qpgres_polling_reading; | |
| 193 static Lisp_Object Qpgres_polling_writing, Qpgres_polling_ok; | |
| 194 static Lisp_Object Qpgres_polling_active; | |
| 195 /****/ | |
| 196 | |
| 197 /* PGconn is an opaque object and we need to be able to store them in | |
| 198 Lisp code because libpq supports multiple connections. | |
| 199 */ | |
| 200 Lisp_Object Qpgconnp; | |
| 201 | |
| 202 static Lisp_Object | |
| 203 make_pgconn (Lisp_PGconn *pgconn) | |
| 204 { | |
| 205 return wrap_pgconn (pgconn); | |
| 206 } | |
| 207 | |
| 1204 | 208 static const struct memory_description pgconn_description [] = { |
| 996 | 209 { XD_END } |
| 210 }; | |
| 211 | |
| 212 static Lisp_Object | |
| 213 #ifdef RUNNING_XEMACS_21_1 | |
| 2286 | 214 mark_pgconn (Lisp_Object UNUSED (obj), |
| 215 void (*UNUSED_ARG (markobj)) (Lisp_Object) ATTRIBUTE_UNUSED) | |
| 996 | 216 #else |
| 2286 | 217 mark_pgconn (Lisp_Object UNUSED (obj)) |
| 996 | 218 #endif |
| 219 { | |
| 220 return Qnil; | |
| 221 } | |
| 222 | |
| 223 static void | |
| 2286 | 224 print_pgconn (Lisp_Object obj, Lisp_Object printcharfun, |
| 225 int UNUSED (escapeflag)) | |
| 996 | 226 { |
| 227 char buf[256]; | |
| 228 PGconn *P; | |
| 229 ConnStatusType cst; | |
| 4932 | 230 const char *host="", *db="", *user="", *port=""; |
| 996 | 231 |
| 232 P = (XPGCONN (obj))->pgconn; | |
| 233 | |
| 234 if (!P) /* this may happen since we allow PQfinish() to be called */ | |
| 235 strcpy (buf, "#<PGconn DEAD>"); /* evil! */ | |
| 236 else if ((cst = PQstatus (P)) == CONNECTION_OK) | |
| 237 { | |
| 238 if (!(host = PQhost (P))) | |
| 239 host = ""; | |
| 240 port = PQport (P); | |
| 241 db = PQdb (P); | |
| 242 if (!(user = PQuser (P))) | |
| 243 user = ""; | |
| 244 sprintf (buf, "#<PGconn %s:%s %s/%s>", /* evil! */ | |
| 245 !strlen (host) ? "localhost" : host, | |
| 246 port, | |
| 247 user, | |
| 248 db); | |
| 249 } | |
| 250 else if (cst == CONNECTION_BAD) | |
| 251 strcpy (buf, "#<PGconn BAD>"); /* evil! */ | |
| 252 else | |
| 253 strcpy (buf, "#<PGconn connecting>"); /* evil! */ | |
| 254 | |
| 255 if (print_readably) | |
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256 printing_unreadable_object_fmt ("%s", buf); |
| 996 | 257 else |
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258 write_cistring (printcharfun, buf); |
| 996 | 259 } |
| 260 | |
| 261 static Lisp_PGconn * | |
| 262 allocate_pgconn (void) | |
| 263 { | |
| 264 #ifdef RUNNING_XEMACS_21_1 | |
| 3024 | 265 Lisp_PGconn *pgconn = ALLOC_LCRECORD_TYPE (Lisp_PGconn, |
| 996 | 266 lrecord_pgconn); |
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267 #elif defined (RUNNING_XEMACS_21_4) |
| 3024 | 268 Lisp_PGconn *pgconn = ALLOC_LCRECORD_TYPE (Lisp_PGconn, |
| 996 | 269 &lrecord_pgconn); |
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270 #else |
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271 Lisp_PGconn *pgconn = XPGCONN (ALLOC_NORMAL_LISP_OBJECT (pgconn)); |
| 996 | 272 #endif |
| 273 pgconn->pgconn = (PGconn *)NULL; | |
| 274 return pgconn; | |
| 275 } | |
| 276 | |
| 5125 | 277 #ifdef RUNNING_XEMACS_21_4 |
| 278 | |
| 996 | 279 static void |
| 280 finalize_pgconn (void *header, int for_disksave) | |
| 281 { | |
| 282 Lisp_PGconn *pgconn = (Lisp_PGconn *)header; | |
| 283 | |
| 284 if (for_disksave) | |
| 285 invalid_operation ("Can't dump an emacs containing PGconn objects", | |
| 286 make_pgconn (pgconn)); | |
| 287 | |
| 288 if (pgconn->pgconn) | |
| 289 { | |
| 290 PQfinish (pgconn->pgconn); | |
| 291 pgconn->pgconn = (PGconn *)NULL; | |
| 292 } | |
| 293 } | |
| 294 | |
| 5125 | 295 #else /* not RUNNING_XEMACS_21_4 */ |
| 296 | |
| 297 static void | |
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298 finalize_pgconn (Lisp_Object obj) |
| 5125 | 299 { |
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300 Lisp_PGconn *pgconn = XPGCONN (obj); |
| 5125 | 301 |
| 302 if (pgconn->pgconn) | |
| 303 { | |
| 304 PQfinish (pgconn->pgconn); | |
| 305 pgconn->pgconn = (PGconn *)NULL; | |
| 306 } | |
| 307 } | |
| 308 | |
| 309 #endif /* (not) RUNNING_XEMACS_21_4 */ | |
| 310 | |
| 996 | 311 #ifdef RUNNING_XEMACS_21_1 |
| 312 DEFINE_LRECORD_IMPLEMENTATION ("pgconn", pgconn, | |
| 313 mark_pgconn, print_pgconn, finalize_pgconn, | |
| 314 NULL, NULL, | |
| 315 Lisp_PGconn); | |
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316 #elif defined (RUNNING_XEMACS_21_4) |
| 996 | 317 DEFINE_LRECORD_IMPLEMENTATION ("pgconn", pgconn, |
| 318 0, /*dumpable-flag*/ | |
| 319 mark_pgconn, print_pgconn, finalize_pgconn, | |
| 320 NULL, NULL, | |
| 321 pgconn_description, | |
| 322 Lisp_PGconn); | |
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323 #else |
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324 DEFINE_NODUMP_LISP_OBJECT ("pgconn", pgconn, |
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325 mark_pgconn, print_pgconn, |
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326 finalize_pgconn, |
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327 NULL, NULL, |
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328 pgconn_description, |
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329 Lisp_PGconn); |
| 996 | 330 #endif |
| 331 /****/ | |
| 332 | |
| 333 /* PGresult is an opaque object and we need to be able to store them in | |
| 334 Lisp code. | |
| 335 */ | |
| 336 Lisp_Object Qpgresultp; | |
| 337 | |
| 338 static Lisp_Object | |
| 339 make_pgresult (Lisp_PGresult *pgresult) | |
| 340 { | |
| 341 return wrap_pgresult (pgresult); | |
| 342 } | |
| 343 | |
| 1204 | 344 static const struct memory_description pgresult_description [] = { |
| 996 | 345 { XD_END } |
| 346 }; | |
| 347 | |
| 348 | |
| 349 static Lisp_Object | |
| 350 #ifdef RUNNING_XEMACS_21_1 | |
| 2286 | 351 mark_pgresult (Lisp_Object UNUSED (obj), |
| 352 void (*UNUSED_ARG (markobj)) (Lisp_Object) ATTRIBUTE_UNUSED) | |
| 996 | 353 #else |
| 2286 | 354 mark_pgresult (Lisp_Object UNUSED (obj)) |
| 996 | 355 #endif |
| 356 { | |
| 357 return Qnil; | |
| 358 } | |
| 359 | |
| 360 #define RESULT_TUPLES_FMT "#<PGresult %s[%d] - %s>" | |
| 361 #define RESULT_CMD_TUPLES_FMT "#<PGresult %s[%s] - %s>" | |
| 362 #define RESULT_DEFAULT_FMT "#<PGresult %s - %s>" | |
| 363 static void | |
| 2286 | 364 print_pgresult (Lisp_Object obj, Lisp_Object printcharfun, |
| 365 int UNUSED (escapeflag)) | |
| 996 | 366 { |
| 367 char buf[1024]; | |
| 368 PGresult *res; | |
| 369 | |
| 370 res = (XPGRESULT (obj))->pgresult; | |
| 371 | |
| 372 if (res) | |
| 373 { | |
| 374 switch (PQresultStatus (res)) | |
| 375 { | |
| 376 case PGRES_TUPLES_OK: | |
| 377 /* Add number of tuples of result to output */ | |
| 378 sprintf (buf, RESULT_TUPLES_FMT, /* evil! */ | |
| 379 PQresStatus (PQresultStatus (res)), | |
| 380 PQntuples (res), | |
| 381 PQcmdStatus (res)); | |
| 382 break; | |
| 383 case PGRES_COMMAND_OK: | |
| 384 /* Add number of tuples affected by output-less command */ | |
| 385 if (!strlen (PQcmdTuples (res))) goto notuples; | |
| 386 sprintf (buf, RESULT_CMD_TUPLES_FMT, /* evil! */ | |
| 387 PQresStatus (PQresultStatus (res)), | |
| 388 PQcmdTuples (res), | |
| 389 PQcmdStatus (res)); | |
| 390 break; | |
| 391 default: | |
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392 notuples: |
| 996 | 393 /* No counts to print */ |
| 394 sprintf (buf, RESULT_DEFAULT_FMT, /* evil! */ | |
| 395 PQresStatus (PQresultStatus (res)), | |
| 396 PQcmdStatus (res)); | |
| 397 break; | |
| 398 } | |
| 399 } | |
| 400 else | |
| 401 strcpy (buf, "#<PGresult DEAD>"); /* evil! */ | |
| 402 | |
| 403 if (print_readably) | |
|
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404 printing_unreadable_object_fmt ("%s", buf); |
| 996 | 405 else |
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406 write_cistring (printcharfun, buf); |
| 996 | 407 } |
| 408 | |
| 409 #undef RESULT_TUPLES_FMT | |
| 410 #undef RESULT_CMD_TUPLES_FMT | |
| 411 #undef RESULT_DEFAULT_FMT | |
| 412 | |
| 413 static Lisp_PGresult * | |
| 414 allocate_pgresult (void) | |
| 415 { | |
| 416 #ifdef RUNNING_XEMACS_21_1 | |
| 3024 | 417 Lisp_PGresult *pgresult = ALLOC_LCRECORD_TYPE (Lisp_PGresult, |
| 996 | 418 lrecord_pgresult); |
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419 #elif defined (RUNNING_XEMACS_21_4) |
| 3024 | 420 Lisp_PGresult *pgresult = ALLOC_LCRECORD_TYPE (Lisp_PGresult, |
| 996 | 421 &lrecord_pgresult); |
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422 #else |
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423 Lisp_PGresult *pgresult = XPGRESULT (ALLOC_NORMAL_LISP_OBJECT (pgresult)); |
| 996 | 424 #endif |
| 425 pgresult->pgresult = (PGresult *)NULL; | |
| 426 return pgresult; | |
| 427 } | |
| 428 | |
| 5125 | 429 #ifdef RUNNING_XEMACS_21_4 |
| 430 | |
| 996 | 431 static void |
| 432 finalize_pgresult (void *header, int for_disksave) | |
| 433 { | |
| 434 Lisp_PGresult *pgresult = (Lisp_PGresult *)header; | |
| 435 | |
| 436 if (for_disksave) | |
| 437 invalid_operation ("Can't dump an emacs containing PGresult objects", | |
| 438 make_pgresult (pgresult)); | |
| 439 | |
| 440 if (pgresult->pgresult) | |
| 441 { | |
| 442 PQclear (pgresult->pgresult); | |
| 443 pgresult->pgresult = (PGresult *)NULL; | |
| 444 } | |
| 445 } | |
| 446 | |
| 5125 | 447 #else /* not RUNNING_XEMACS_21_4 */ |
| 448 | |
| 449 static void | |
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450 finalize_pgresult (Lisp_Object obj) |
| 5125 | 451 { |
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452 Lisp_PGresult *pgresult = XPGRESULT (obj); |
| 5125 | 453 |
| 454 if (pgresult->pgresult) | |
| 455 { | |
| 456 PQclear (pgresult->pgresult); | |
| 457 pgresult->pgresult = (PGresult *)NULL; | |
| 458 } | |
| 459 } | |
| 460 | |
| 461 #endif /* (not) RUNNING_XEMACS_21_4 */ | |
| 462 | |
| 996 | 463 #ifdef RUNNING_XEMACS_21_1 |
| 464 DEFINE_LRECORD_IMPLEMENTATION ("pgresult", pgresult, | |
| 465 mark_pgresult, print_pgresult, finalize_pgresult, | |
| 466 NULL, NULL, | |
| 467 Lisp_PGresult); | |
|
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468 #elif defined (RUNNING_XEMACS_21_4) |
| 996 | 469 DEFINE_LRECORD_IMPLEMENTATION ("pgresult", pgresult, |
| 470 0, /*dumpable-flag*/ | |
| 471 mark_pgresult, print_pgresult, finalize_pgresult, | |
| 472 NULL, NULL, | |
| 473 pgresult_description, | |
| 474 Lisp_PGresult); | |
|
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475 #else |
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476 DEFINE_NODUMP_LISP_OBJECT ("pgresult", pgresult, |
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477 mark_pgresult, print_pgresult, finalize_pgresult, |
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478 NULL, NULL, |
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479 pgresult_description, |
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480 Lisp_PGresult); |
| 996 | 481 #endif |
| 482 | |
| 483 /***********************/ | |
| 484 | |
| 485 /* notices */ | |
| 486 static void | |
| 2286 | 487 xemacs_notice_processor (void *UNUSED (arg), const char *msg) |
| 996 | 488 { |
| 489 warn_when_safe (Qpostgresql, Qnotice, "%s", msg); | |
| 490 } | |
| 491 | |
| 492 /* There are four ways (as of PostgreSQL v7) to connect to a database. | |
| 493 Two of them, PQsetdb and PQsetdbLogin, are deprecated. Both of those | |
| 494 routines take a number of positional parameters and are better done in Lisp. | |
| 495 Note that PQconnectStart does not exist prior to v7. | |
| 496 */ | |
| 497 | |
| 498 /* ###autoload */ | |
| 499 DEFUN ("pq-conn-defaults", Fpq_conn_defaults, 0, 0, 0, /* | |
| 500 Return a connection default structure. | |
| 501 */ | |
| 502 ()) | |
| 503 { | |
| 504 /* This function can GC */ | |
| 505 PQconninfoOption *pcio; | |
| 506 Lisp_Object temp, temp1; | |
| 507 int i; | |
| 508 | |
| 509 pcio = PQconndefaults(); | |
| 510 if (!pcio) return Qnil; /* can never happen in libpq-7.0 */ | |
|
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511 temp = |
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512 list1 (nconc2 (list4 (build_extstring (pcio[0].keyword, PG_OS_CODING), |
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513 build_extstring (pcio[0].envvar, PG_OS_CODING), |
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514 build_extstring (pcio[0].compiled, PG_OS_CODING), |
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515 build_extstring (pcio[0].val, PG_OS_CODING)), |
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516 list3 (build_extstring (pcio[0].label, PG_OS_CODING), |
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517 build_extstring (pcio[0].dispchar, PG_OS_CODING), |
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518 make_int (pcio[0].dispsize)))); |
| 996 | 519 |
| 520 for (i = 1; pcio[i].keyword; i++) | |
| 521 { | |
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522 temp1 = |
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523 list1 (nconc2 (list4 (build_extstring (pcio[i].keyword, PG_OS_CODING), |
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524 build_extstring (pcio[i].envvar, PG_OS_CODING), |
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525 build_extstring (pcio[i].compiled, PG_OS_CODING), |
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526 build_extstring (pcio[i].val, PG_OS_CODING)), |
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527 list3 (build_extstring (pcio[i].label, PG_OS_CODING), |
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528 build_extstring (pcio[i].dispchar, PG_OS_CODING), |
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529 make_int (pcio[i].dispsize)))); |
| 996 | 530 { |
| 531 Lisp_Object args[2]; | |
| 532 args[0] = temp; | |
| 533 args[1] = temp1; | |
| 534 /* Fappend GCPROs its arguments */ | |
| 535 temp = Fappend (2, args); | |
| 536 } | |
| 537 } | |
| 538 | |
| 539 return temp; | |
| 540 } | |
| 541 | |
| 542 /* PQconnectdb Makes a new connection to a backend. | |
| 543 PGconn *PQconnectdb(const char *conninfo) | |
| 544 */ | |
| 545 | |
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546 #ifdef HAVE_POSTGRESQLV7 |
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547 #define USED_IF_V7(x) x |
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548 #else |
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549 #define USED_IF_V7(x) UNUSED (x) |
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550 #endif |
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551 |
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552 static Lisp_Object |
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553 postgresql_connect (Lisp_Object conninfo, int USED_IF_V7 (async)) |
| 996 | 554 { |
| 555 PGconn *P; | |
| 556 Lisp_PGconn *lisp_pgconn; | |
| 557 | |
| 558 CHECK_STRING (conninfo); | |
| 559 | |
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560 P = ( |
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561 #ifdef HAVE_POSTGRESQLV7 |
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562 async ? PQconnectStart : |
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563 #endif |
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564 PQconnectdb) |
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565 (LISP_STRING_TO_EXTERNAL (conninfo, PG_OS_CODING)); |
| 996 | 566 if (P && (PQstatus (P) == CONNECTION_OK)) |
| 567 { | |
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568 (void) PQsetNoticeProcessor (P, xemacs_notice_processor, NULL); |
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569 lisp_pgconn = allocate_pgconn (); |
| 996 | 570 lisp_pgconn->pgconn = P; |
| 571 return make_pgconn (lisp_pgconn); | |
| 572 } | |
| 573 else | |
| 574 { | |
| 575 /* Connection failed. Destroy the connection and signal an error. */ | |
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576 |
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577 Lisp_Object errmsg; |
| 996 | 578 if (P) |
| 579 { | |
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580 errmsg = build_extstring (PQerrorMessage (P), PG_OS_CODING); |
| 996 | 581 PQfinish (P); |
| 582 } | |
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583 else |
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584 errmsg = build_msg_string ("Out of Memory?"); |
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585 signal_error (Qprocess_error, "Connecting to PostGreSQL backend", |
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586 errmsg); |
| 996 | 587 } |
| 588 } | |
| 589 | |
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590 /* ###autoload */ |
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591 DEFUN ("pq-connectdb", Fpq_connectdb, 1, 1, 0, /* |
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592 Make a new connection to a PostgreSQL backend. |
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593 */ |
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594 (conninfo)) |
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595 { |
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596 return postgresql_connect (conninfo, 0); |
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597 } |
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598 |
| 996 | 599 /* PQconnectStart Makes a new asynchronous connection to a backend. |
| 600 PGconn *PQconnectStart(const char *conninfo) | |
| 601 */ | |
| 602 | |
| 603 #ifdef HAVE_POSTGRESQLV7 | |
| 604 /* ###autoload */ | |
| 605 DEFUN ("pq-connect-start", Fpq_connect_start, 1, 1, 0, /* | |
| 606 Make a new asynchronous connection to a PostgreSQL backend. | |
| 607 */ | |
| 608 (conninfo)) | |
| 609 { | |
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610 return postgresql_connect (conninfo, 1); |
| 996 | 611 } |
| 612 | |
| 613 DEFUN ("pq-connect-poll", Fpq_connect_poll, 1, 1, 0, /* | |
| 614 Poll an asynchronous connection for completion | |
| 615 */ | |
| 616 (conn)) | |
| 617 { | |
| 618 PGconn *P; | |
| 619 PostgresPollingStatusType polling_status; | |
| 620 | |
| 621 CHECK_PGCONN (conn); | |
| 622 | |
| 623 P = (XPGCONN (conn))->pgconn; | |
| 624 CHECK_LIVE_CONNECTION (P); | |
| 625 | |
| 626 polling_status = PQconnectPoll (P); | |
| 627 switch (polling_status) | |
| 628 { | |
| 629 case PGRES_POLLING_FAILED: | |
| 630 /* Something Bad has happened */ | |
|
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631 SIGNAL_ERROR (P, "Polling asynchronous connection"); |
| 996 | 632 case PGRES_POLLING_OK: |
| 633 return Qpgres_polling_ok; | |
| 634 case PGRES_POLLING_READING: | |
| 635 return Qpgres_polling_reading; | |
| 636 case PGRES_POLLING_WRITING: | |
| 637 return Qpgres_polling_writing; | |
| 638 case PGRES_POLLING_ACTIVE: | |
| 639 return Qpgres_polling_active; | |
| 640 default: | |
| 641 /* they've added a new field we don't know about */ | |
| 642 signal_ferror (Qprocess_error, "Help! Unknown status code %08x from backend!", polling_status); | |
| 643 } | |
| 644 } | |
| 645 | |
| 646 #ifdef MULE | |
| 647 DEFUN ("pq-client-encoding", Fpq_client_encoding, 1, 1, 0, /* | |
| 648 Return client coding system. | |
| 649 */ | |
| 650 (conn)) | |
| 651 { | |
| 652 PGconn *P; | |
| 653 | |
| 654 CHECK_PGCONN (conn); | |
| 655 P = (XPGCONN (conn))->pgconn; | |
| 656 CHECK_LIVE_CONNECTION (P); | |
| 657 | |
| 658 return make_int (PQclientEncoding (P)); | |
| 659 } | |
| 660 | |
| 661 DEFUN ("pq-set-client-encoding", Fpq_set_client_encoding, 2, 2, 0, /* | |
| 662 Set client coding system. | |
| 663 */ | |
| 664 (conn, encoding)) | |
| 665 { | |
| 666 PGconn *P; | |
| 667 int rc; | |
| 668 char *c_encoding; | |
| 669 | |
| 670 CHECK_PGCONN (conn); | |
| 671 CHECK_STRING (encoding); | |
| 672 | |
| 673 P = (XPGCONN (conn))->pgconn; | |
| 674 CHECK_LIVE_CONNECTION (P); | |
| 675 | |
| 676 TO_EXTERNAL_FORMAT (LISP_STRING, encoding, | |
| 677 C_STRING_ALLOCA, c_encoding, Qnative); | |
| 678 | |
| 679 if ((rc = PQsetClientEncoding (P, c_encoding)) < 0) | |
| 680 signal_error (Qinvalid_argument, "bad encoding", Qunbound); | |
| 681 else | |
| 682 return make_int (rc); | |
| 683 } | |
| 684 | |
| 685 #endif | |
| 686 #endif /* HAVE_POSTGRESQLV7 */ | |
| 687 | |
| 688 /* PQfinish Close the connection to the backend. Also frees memory | |
| 689 used by the PGconn object. | |
| 690 void PQfinish(PGconn *conn) | |
| 691 */ | |
| 692 DEFUN ("pq-finish", Fpq_finish, 1, 1, 0, /* | |
| 693 Close the connection to the backend. | |
| 694 */ | |
| 695 (conn)) | |
| 696 { | |
| 697 PGconn *P; | |
| 698 | |
| 699 CHECK_PGCONN (conn); | |
| 700 P = (XPGCONN (conn))->pgconn; | |
| 701 PUKE_IF_NULL (P); | |
| 702 | |
| 703 PQfinish (P); | |
| 704 /* #### PQfinish deallocates the PGconn structure, so we now have a | |
| 705 dangling pointer. */ | |
| 706 /* Genocided all @'s ... */ | |
| 707 (XPGCONN (conn))->pgconn = (PGconn *)NULL; /* You feel DEAD inside */ | |
| 708 return Qnil; | |
| 709 } | |
| 710 | |
| 711 DEFUN ("pq-clear", Fpq_clear, 1, 1, 0, /* | |
| 712 Forcibly erase a PGresult object. | |
| 713 */ | |
| 714 (res)) | |
| 715 { | |
| 716 PGresult *R; | |
| 717 | |
| 718 CHECK_PGRESULT (res); | |
| 719 R = (XPGRESULT (res))->pgresult; | |
| 720 PUKE_IF_NULL (R); | |
| 721 | |
| 722 PQclear (R); | |
| 723 /* Genocided all @'s ... */ | |
| 724 (XPGRESULT (res))->pgresult = (PGresult *)NULL; /* You feel DEAD inside */ | |
| 725 | |
| 726 return Qnil; | |
| 727 } | |
| 728 | |
| 729 DEFUN ("pq-is-busy", Fpq_is_busy, 1, 1, 0, /* | |
| 730 Return t if PQgetResult would block waiting for input. | |
| 731 */ | |
| 732 (conn)) | |
| 733 { | |
| 734 PGconn *P; | |
| 735 | |
| 736 CHECK_PGCONN (conn); | |
| 737 P = (XPGCONN (conn))->pgconn; | |
| 738 CHECK_LIVE_CONNECTION (P); | |
| 739 | |
| 740 return PQisBusy (P) ? Qt : Qnil; | |
| 741 } | |
| 742 | |
| 743 DEFUN ("pq-consume-input", Fpq_consume_input, 1, 1, 0, /* | |
| 744 Consume any available input from the backend. | |
| 745 Returns nil if something bad happened. | |
| 746 */ | |
| 747 (conn)) | |
| 748 { | |
| 749 PGconn *P; | |
| 750 | |
| 751 CHECK_PGCONN (conn); | |
| 752 P = (XPGCONN (conn))->pgconn; | |
| 753 CHECK_LIVE_CONNECTION (P); | |
| 754 | |
| 755 return PQconsumeInput (P) ? Qt : Qnil; | |
| 756 } | |
| 757 | |
| 758 /* PQreset Reset the communication port with the backend. | |
| 759 void PQreset(PGconn *conn) | |
| 760 */ | |
| 761 DEFUN ("pq-reset", Fpq_reset, 1, 1, 0, /* | |
| 762 Reset the connection to the backend. | |
| 763 This function will close the connection to the backend and attempt to | |
| 764 reestablish a new connection to the same postmaster, using all the same | |
| 765 parameters previously used. This may be useful for error recovery if a | |
| 766 working connection is lost. | |
| 767 */ | |
| 768 (conn)) | |
| 769 { | |
| 770 PGconn *P; | |
| 771 | |
| 772 CHECK_PGCONN (conn); | |
| 773 P = (XPGCONN (conn))->pgconn; | |
| 774 PUKE_IF_NULL (P);/* we can resurrect a BAD connection, but not a dead one. */ | |
| 775 | |
| 776 PQreset (P); | |
| 777 | |
| 778 return Qnil; | |
| 779 } | |
| 780 | |
| 781 #ifdef HAVE_POSTGRESQLV7 | |
| 782 DEFUN ("pq-reset-start", Fpq_reset_start, 1, 1, 0, /* | |
| 783 Reset connection to the backend asynchronously. | |
| 784 */ | |
| 785 (conn)) | |
| 786 { | |
| 787 PGconn *P; | |
| 788 | |
| 789 CHECK_PGCONN (conn); | |
| 790 P = (XPGCONN (conn))->pgconn; | |
| 791 CHECK_LIVE_CONNECTION (P); | |
| 792 | |
| 793 if (PQresetStart (P)) return Qt; | |
|
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794 SIGNAL_ERROR (P, "Resetting connection"); |
| 996 | 795 } |
| 796 | |
| 797 DEFUN ("pq-reset-poll", Fpq_reset_poll, 1, 1, 0, /* | |
| 798 Poll an asynchronous reset for completion. | |
| 799 */ | |
| 800 (conn)) | |
| 801 { | |
| 802 PGconn *P; | |
| 803 PostgresPollingStatusType polling_status; | |
| 804 | |
| 805 CHECK_PGCONN (conn); | |
| 806 | |
| 807 P = (XPGCONN (conn))->pgconn; | |
| 808 CHECK_LIVE_CONNECTION (P); | |
| 809 | |
| 810 polling_status = PQresetPoll (P); | |
| 811 switch (polling_status) | |
| 812 { | |
| 813 case PGRES_POLLING_FAILED: | |
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814 SIGNAL_ERROR (P, "Polling asynchronous reset"); |
| 996 | 815 case PGRES_POLLING_OK: |
| 816 return Qpgres_polling_ok; | |
| 817 case PGRES_POLLING_READING: | |
| 818 return Qpgres_polling_reading; | |
| 819 case PGRES_POLLING_WRITING: | |
| 820 return Qpgres_polling_writing; | |
| 821 case PGRES_POLLING_ACTIVE: | |
| 822 return Qpgres_polling_active; | |
| 823 default: | |
| 824 /* they've added a new field we don't know about */ | |
| 825 signal_ferror (Qprocess_error, "Help! Unknown status code %08x from backend!", polling_status); | |
| 826 } | |
| 827 } | |
| 828 #endif | |
| 829 | |
| 830 DEFUN ("pq-request-cancel", Fpq_request_cancel, 1, 1, 0, /* | |
| 831 Attempt to request cancellation of the current operation. | |
| 832 | |
| 833 The return value is t if the cancel request was successfully | |
| 834 dispatched, nil if not (in which case conn->errorMessage is set). | |
| 835 Note: successful dispatch is no guarantee that there will be any effect at | |
| 836 the backend. The application must read the operation result as usual. | |
| 837 */ | |
| 838 (conn)) | |
| 839 { | |
| 840 PGconn *P; | |
| 841 | |
| 842 CHECK_PGCONN (conn); | |
| 843 P = (XPGCONN (conn))->pgconn; | |
| 844 CHECK_LIVE_CONNECTION (P); | |
| 845 | |
| 846 return PQrequestCancel (P) ? Qt : Qnil; | |
| 847 } | |
| 848 | |
| 849 /* accessor function for the PGconn object */ | |
| 850 DEFUN ("pq-pgconn", Fpq_pgconn, 2, 2, 0, /* | |
| 851 Accessor function for the PGconn object. | |
| 852 Currently recognized symbols for the field: | |
| 853 pq::db Database name | |
| 854 pq::user Database user name | |
| 855 pq::pass Database user's password | |
| 856 pq::host Hostname of PostgreSQL backend connected to | |
| 857 pq::port TCP port number of connection | |
| 858 pq::tty Debugging TTY (not used in Emacs) | |
| 859 pq::options Additional backend options | |
| 860 pq::status Connection status (either OK or BAD) | |
| 861 pq::error-message Last error message from the backend | |
| 862 pq::backend-pid Process ID of backend process | |
| 863 */ | |
| 864 (conn, field)) | |
| 865 { | |
| 866 PGconn *P; | |
| 867 | |
| 868 CHECK_PGCONN (conn); | |
| 869 P = (XPGCONN (conn))->pgconn; | |
| 870 PUKE_IF_NULL (P); /* BAD connections still have state to query */ | |
| 871 | |
| 872 if (EQ(field, Qpqdb)) | |
| 873 /* PQdb Returns the database name of the connection. | |
| 874 char *PQdb(PGconn *conn) | |
| 875 */ | |
|
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876 return build_extstring (PQdb(P), PG_OS_CODING); |
| 996 | 877 else if (EQ (field, Qpquser)) |
| 878 /* PQuser Returns the user name of the connection. | |
| 879 char *PQuser(PGconn *conn) | |
| 880 */ | |
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881 return build_extstring (PQuser(P), PG_OS_CODING); |
| 996 | 882 else if (EQ (field, Qpqpass)) |
| 883 /* PQpass Returns the password of the connection. | |
| 884 char *PQpass(PGconn *conn) | |
| 885 */ | |
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886 return build_extstring (PQpass(P), PG_OS_CODING); |
| 996 | 887 else if (EQ (field, Qpqhost)) |
| 888 /* PQhost Returns the server host name of the connection. | |
| 889 char *PQhost(PGconn *conn) | |
| 890 */ | |
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891 return build_extstring (PQhost(P), PG_OS_CODING); |
| 996 | 892 else if (EQ (field, Qpqport)) |
| 893 { | |
| 894 char *p; | |
| 895 /* PQport Returns the port of the connection. | |
| 896 char *PQport(PGconn *conn) | |
| 897 */ | |
| 898 if ((p = PQport(P))) | |
| 899 return make_int(atoi(p)); | |
| 900 else | |
| 901 return make_int(-1); | |
| 902 } | |
| 903 else if (EQ (field, Qpqtty)) | |
| 904 /* PQtty Returns the debug tty of the connection. | |
| 905 char *PQtty(PGconn *conn) | |
| 906 */ | |
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907 return build_extstring (PQtty(P), PG_OS_CODING); |
| 996 | 908 else if (EQ (field, Qpqoptions)) |
| 909 /* PQoptions Returns the backend options used in the connection. | |
| 910 char *PQoptions(PGconn *conn) | |
| 911 */ | |
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912 return build_extstring (PQoptions(P), PG_OS_CODING); |
| 996 | 913 else if (EQ (field, Qpqstatus)) |
| 914 { | |
| 915 ConnStatusType cst; | |
| 916 /* PQstatus Returns the status of the connection. The status can be | |
| 917 CONNECTION_OK or CONNECTION_BAD. | |
| 918 ConnStatusType PQstatus(PGconn *conn) | |
| 919 */ | |
| 920 switch ((cst = PQstatus (P))) | |
| 921 { | |
| 922 case CONNECTION_OK: return Qpg_connection_ok; | |
| 923 case CONNECTION_BAD: return Qpg_connection_bad; | |
| 924 #ifdef HAVE_POSTGRESQLV7 | |
| 925 case CONNECTION_STARTED: return Qpg_connection_started; | |
| 926 case CONNECTION_MADE: return Qpg_connection_made; | |
| 927 case CONNECTION_AWAITING_RESPONSE: return Qpg_connection_awaiting_response; | |
| 928 case CONNECTION_AUTH_OK: return Qpg_connection_auth_ok; | |
| 929 case CONNECTION_SETENV: return Qpg_connection_setenv; | |
| 930 #endif /* HAVE_POSTGRESQLV7 */ | |
| 931 default: | |
| 932 /* they've added a new field we don't know about */ | |
| 933 signal_ferror (Qprocess_error, "Help! Unknown connection status code %08x from backend!", cst); | |
| 934 } | |
| 935 } | |
| 936 else if (EQ (field, Qpqerrormessage)) | |
| 937 /* PQerrorMessage Returns the error message most recently generated | |
| 938 by an operation on the connection. | |
| 939 char *PQerrorMessage(PGconn* conn); | |
| 940 */ | |
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941 return build_extstring (PQerrorMessage(P), PG_OS_CODING); |
| 996 | 942 else if (EQ (field, Qpqbackendpid)) |
| 943 /* PQbackendPID Returns the process ID of the backend server handling | |
| 944 this connection. | |
| 945 int PQbackendPID(PGconn *conn); | |
| 946 */ | |
| 947 return make_int (PQbackendPID(P)); | |
| 948 else | |
| 949 signal_error (Qinvalid_argument, "bad PGconn accessor", Qunbound); | |
| 950 } | |
| 951 | |
| 952 /* Query functions */ | |
| 953 DEFUN ("pq-exec", Fpq_exec, 2, 2, 0, /* | |
| 954 Submit a query to Postgres and wait for the result. | |
| 955 */ | |
| 956 (conn, query)) | |
| 957 { | |
| 958 PGconn *P; | |
| 959 Lisp_PGresult *lisp_pgresult; | |
| 960 PGresult *R; | |
| 961 char *c_query; | |
| 962 | |
| 963 CHECK_PGCONN (conn); | |
| 964 CHECK_STRING (query); | |
| 965 | |
| 966 P = (XPGCONN (conn))->pgconn; | |
| 967 CHECK_LIVE_CONNECTION (P); | |
| 968 | |
| 969 TO_EXTERNAL_FORMAT (LISP_STRING, query, | |
| 970 C_STRING_ALLOCA, c_query, Qnative); | |
| 971 | |
| 972 R = PQexec (P, c_query); | |
| 973 { | |
| 4932 | 974 const Ascbyte *tag; |
| 975 char buf[BLCKSZ]; | |
| 996 | 976 |
| 977 if (!R) out_of_memory ("query: out of memory", Qunbound); | |
| 978 else | |
| 979 switch (PQresultStatus (R)) | |
| 980 { | |
| 981 case PGRES_BAD_RESPONSE: | |
| 982 tag = "bad response [%s]"; | |
| 983 goto err; | |
| 984 case PGRES_NONFATAL_ERROR: | |
| 985 tag = "non-fatal error [%s]"; | |
| 986 goto err; | |
| 987 case PGRES_FATAL_ERROR: | |
| 988 tag = "fatal error [%s]"; | |
| 989 err: | |
| 990 strncpy (buf, PQresultErrorMessage (R), sizeof (buf)); | |
| 991 buf [sizeof (buf) - 1] = '\0'; | |
| 992 PQclear (R); | |
| 993 signal_ferror (Qprocess_error, tag, buf); | |
| 994 /*NOTREACHED*/ | |
| 995 default: | |
| 996 break; | |
| 997 } | |
| 998 } | |
| 999 | |
| 1000 lisp_pgresult = allocate_pgresult (); | |
| 1001 lisp_pgresult->pgresult = R; | |
| 1002 | |
| 1003 return make_pgresult (lisp_pgresult); | |
| 1004 } | |
| 1005 | |
| 1006 DEFUN ("pq-send-query", Fpq_send_query, 2, 2, 0, /* | |
| 1007 Submit a query to Postgres and don't wait for the result. | |
| 1008 Returns: t if successfully submitted | |
| 1009 nil if error (conn->errorMessage is set) | |
| 1010 */ | |
| 1011 (conn, query)) | |
| 1012 { | |
| 1013 PGconn *P; | |
| 1014 char *c_query; | |
| 1015 | |
| 1016 CHECK_PGCONN (conn); | |
| 1017 CHECK_STRING (query); | |
| 1018 | |
| 1019 P = (XPGCONN (conn))->pgconn; | |
| 1020 CHECK_LIVE_CONNECTION (P); | |
| 1021 | |
| 1022 TO_EXTERNAL_FORMAT (LISP_STRING, query, | |
| 1023 C_STRING_ALLOCA, c_query, Qnative); | |
| 1024 | |
| 1025 if (PQsendQuery (P, c_query)) return Qt; | |
|
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1026 else SIGNAL_ERROR (P, "Sending asynchronous query"); |
| 996 | 1027 } |
| 1028 | |
| 1029 DEFUN ("pq-get-result", Fpq_get_result, 1, 1, 0, /* | |
| 1030 Retrieve an asynchronous result from a query. | |
| 1031 NIL is returned when no more query work remains. | |
| 1032 */ | |
| 1033 (conn)) | |
| 1034 { | |
| 1035 PGconn *P; | |
| 1036 Lisp_PGresult *lisp_pgresult; | |
| 1037 PGresult *R; | |
| 1038 | |
| 1039 CHECK_PGCONN (conn); | |
| 1040 | |
| 1041 P = (XPGCONN (conn))->pgconn; | |
| 1042 CHECK_LIVE_CONNECTION (P); | |
| 1043 | |
| 1044 R = PQgetResult (P); | |
| 1045 if (!R) return Qnil; /* not an error, there's no more data to get */ | |
| 1046 | |
| 1047 { | |
| 4932 | 1048 const Ascbyte *tag; |
| 1049 char buf[BLCKSZ]; | |
| 996 | 1050 |
| 1051 switch (PQresultStatus (R)) | |
| 1052 { | |
| 1053 case PGRES_BAD_RESPONSE: | |
| 1054 tag = "bad response [%s]"; | |
| 1055 goto err; | |
| 1056 case PGRES_NONFATAL_ERROR: | |
| 1057 tag = "non-fatal error [%s]"; | |
| 1058 goto err; | |
| 1059 case PGRES_FATAL_ERROR: | |
| 1060 tag = "fatal error [%s]"; | |
| 1061 err: | |
| 1062 strncpy (buf, PQresultErrorMessage (R), sizeof (buf)); | |
| 1063 buf[sizeof (buf) - 1] = '\0'; | |
| 1064 PQclear (R); | |
| 1065 signal_ferror (Qprocess_error, tag, buf); | |
| 1066 /*NOTREACHED*/ | |
| 1067 default: | |
| 1068 break; | |
| 1069 } | |
| 1070 } | |
| 1071 | |
| 1072 lisp_pgresult = allocate_pgresult(); | |
| 1073 lisp_pgresult->pgresult = R; | |
| 1074 | |
| 1075 return make_pgresult (lisp_pgresult); | |
| 1076 } | |
| 1077 | |
| 1078 DEFUN ("pq-result-status", Fpq_result_status, 1, 1, 0, /* | |
| 1079 Return result status of the query. | |
| 1080 */ | |
| 1081 (result)) | |
| 1082 { | |
| 1083 PGresult *R; | |
| 1084 ExecStatusType est; | |
| 1085 | |
| 1086 CHECK_PGRESULT (result); | |
| 1087 R = (XPGRESULT (result))->pgresult; | |
| 1088 PUKE_IF_NULL (R); | |
| 1089 | |
| 1090 switch ((est = PQresultStatus (R))) { | |
| 1091 case PGRES_EMPTY_QUERY: return Qpgres_empty_query; | |
| 1092 case PGRES_COMMAND_OK: return Qpgres_command_ok; | |
| 1093 case PGRES_TUPLES_OK: return Qpgres_tuples_ok; | |
| 1094 case PGRES_COPY_OUT: return Qpgres_copy_out; | |
| 1095 case PGRES_COPY_IN: return Qpgres_copy_in; | |
| 1096 case PGRES_BAD_RESPONSE: return Qpgres_bad_response; | |
| 1097 case PGRES_NONFATAL_ERROR: return Qpgres_nonfatal_error; | |
| 1098 case PGRES_FATAL_ERROR: return Qpgres_fatal_error; | |
| 1099 default: | |
| 1100 /* they've added a new field we don't know about */ | |
|
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|
1101 signal_ferror (Qprocess_error, |
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1102 "Help! Unknown exec status code %08x from backend!", |
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1103 est); |
| 996 | 1104 } |
| 1105 } | |
| 1106 | |
| 1107 DEFUN ("pq-res-status", Fpq_res_status, 1, 1, 0, /* | |
| 1108 Return stringified result status of the query. | |
| 1109 */ | |
| 1110 (result)) | |
| 1111 { | |
| 1112 PGresult *R; | |
| 1113 | |
| 1114 CHECK_PGRESULT (result); | |
| 1115 R = (XPGRESULT (result))->pgresult; | |
| 1116 PUKE_IF_NULL (R); | |
| 1117 | |
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1118 return build_extstring (PQresStatus (PQresultStatus (R)), PG_OS_CODING); |
| 996 | 1119 } |
| 1120 | |
| 1121 /* Sundry PGresult accessor functions */ | |
| 1122 DEFUN ("pq-result-error-message", Fpq_result_error_message, 1, 1, 0, /* | |
| 1123 Return last message associated with the query. | |
| 1124 */ | |
| 1125 (result)) | |
| 1126 { | |
| 1127 PGresult *R; | |
| 1128 | |
| 1129 CHECK_PGRESULT (result); | |
| 1130 R = (XPGRESULT (result))->pgresult; | |
| 1131 PUKE_IF_NULL (R); | |
| 1132 | |
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1133 return build_extstring (PQresultErrorMessage (R), PG_OS_CODING); |
| 996 | 1134 } |
| 1135 | |
| 1136 DEFUN ("pq-ntuples", Fpq_ntuples, 1, 1, 0, /* | |
| 1137 Return the number of tuples (instances) in the query result. | |
| 1138 */ | |
| 1139 (result)) | |
| 1140 { | |
| 1141 PGresult *R; | |
| 1142 | |
| 1143 CHECK_PGRESULT (result); | |
| 1144 R = (XPGRESULT (result))->pgresult; | |
| 1145 PUKE_IF_NULL (R); | |
| 1146 | |
| 1147 return make_int (PQntuples (R)); | |
| 1148 } | |
| 1149 | |
| 1150 DEFUN ("pq-nfields", Fpq_nfields, 1, 1, 0, /* | |
| 1151 Return the number of fields (attributes) in each tuple of the query result. | |
| 1152 */ | |
| 1153 (result)) | |
| 1154 { | |
| 1155 PGresult *R; | |
| 1156 | |
| 1157 CHECK_PGRESULT (result); | |
| 1158 R = (XPGRESULT (result))->pgresult; | |
| 1159 PUKE_IF_NULL (R); | |
| 1160 | |
| 1161 return make_int (PQnfields (R)); | |
| 1162 } | |
| 1163 | |
| 1164 DEFUN ("pq-binary-tuples", Fpq_binary_tuples, 1, 1, 0, /* | |
| 1165 Return t if the query result contains binary data, nil otherwise. | |
| 1166 */ | |
| 1167 (result)) | |
| 1168 { | |
| 1169 PGresult *R; | |
| 1170 | |
| 1171 CHECK_PGRESULT (result); | |
| 1172 R = (XPGRESULT (result))->pgresult; | |
| 1173 PUKE_IF_NULL (R); | |
| 1174 | |
| 1175 return (PQbinaryTuples (R)) ? Qt : Qnil; | |
| 1176 } | |
| 1177 | |
| 1178 DEFUN ("pq-fname", Fpq_fname, 2, 2, 0, /* | |
| 1179 Return the field (attribute) name associated with the given field index. | |
| 1180 Field indices start at 0. | |
| 1181 */ | |
| 1182 (result, field_index)) | |
| 1183 { | |
| 1184 PGresult *R; | |
| 1185 | |
| 1186 CHECK_PGRESULT (result); | |
| 1187 CHECK_INT (field_index); | |
| 1188 R = (XPGRESULT (result))->pgresult; | |
| 1189 PUKE_IF_NULL (R); | |
| 1190 | |
|
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1191 return build_extstring (PQfname (R, XINT (field_index)), PG_OS_CODING); |
| 996 | 1192 } |
| 1193 | |
| 1194 DEFUN ("pq-fnumber", Fpq_fnumber, 2, 2, 0, /* | |
| 1195 Return the number of fields (attributes) in each tuple of the query result. | |
| 1196 */ | |
| 1197 (result, field_name)) | |
| 1198 { | |
| 1199 PGresult *R; | |
| 1200 char *c_field_name; | |
| 1201 | |
| 1202 CHECK_PGRESULT (result); | |
| 1203 CHECK_STRING (field_name); | |
| 1204 R = (XPGRESULT (result))->pgresult; | |
| 1205 PUKE_IF_NULL (R); | |
| 1206 | |
| 1207 TO_EXTERNAL_FORMAT (LISP_STRING, field_name, | |
| 1208 C_STRING_ALLOCA, c_field_name, Qnative); | |
| 1209 | |
| 1210 return make_int (PQfnumber (R, c_field_name)); | |
| 1211 } | |
| 1212 | |
| 1213 DEFUN ("pq-ftype", Fpq_ftype, 2, 2, 0, /* | |
| 1214 Return the field type associated with the given field index. | |
| 1215 The integer returned is the internal coding of the type. Field indices | |
| 1216 start at 0. | |
| 1217 */ | |
| 1218 (result, field_num)) | |
| 1219 { | |
| 1220 PGresult *R; | |
| 1221 | |
| 1222 CHECK_PGRESULT (result); | |
| 1223 CHECK_INT (field_num); | |
| 1224 R = (XPGRESULT (result))->pgresult; | |
| 1225 PUKE_IF_NULL (R); | |
| 1226 | |
| 1227 return make_int (PQftype (R, XINT (field_num))); | |
| 1228 } | |
| 1229 | |
| 1230 DEFUN ("pq-fsize", Fpq_fsize, 2, 2, 0, /* | |
| 1231 Return the field size in bytes associated with the given field index. | |
| 1232 Field indices start at 0. | |
| 1233 */ | |
| 1234 (result, field_index)) | |
| 1235 { | |
| 1236 PGresult *R; | |
| 1237 | |
| 1238 CHECK_PGRESULT (result); | |
| 1239 CHECK_INT (field_index); | |
| 1240 R = (XPGRESULT (result))->pgresult; | |
| 1241 PUKE_IF_NULL (R); | |
| 1242 | |
| 1243 return make_int (PQftype (R, XINT (field_index))); | |
| 1244 } | |
| 1245 | |
| 1246 DEFUN ("pq-fmod", Fpq_fmod, 2, 2, 0, /* | |
| 1247 Return the type modifier associated with a field. | |
| 1248 Field indices start at 0. | |
| 1249 */ | |
| 1250 (result, field_index)) | |
| 1251 { | |
| 1252 PGresult *R; | |
| 1253 | |
| 1254 CHECK_PGRESULT (result); | |
| 1255 CHECK_INT (field_index); | |
| 1256 R = (XPGRESULT (result))->pgresult; | |
| 1257 PUKE_IF_NULL (R); | |
| 1258 | |
| 1259 return make_int (PQfmod (R, XINT (field_index))); | |
| 1260 } | |
| 1261 | |
| 1262 DEFUN ("pq-get-value", Fpq_get_value, 3, 3, 0, /* | |
| 1263 Return a single field (attribute) value of one tuple of a PGresult. | |
| 1264 Tuple and field indices start at 0. | |
| 1265 */ | |
| 1266 (result, tup_num, field_num)) | |
| 1267 { | |
| 1268 PGresult *R; | |
| 1269 | |
| 1270 CHECK_PGRESULT (result); | |
| 1271 CHECK_INT (tup_num); | |
| 1272 CHECK_INT (field_num); | |
| 1273 R = (XPGRESULT (result))->pgresult; | |
| 1274 PUKE_IF_NULL (R); | |
| 1275 | |
|
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1276 return build_extstring (PQgetvalue (R, XINT (tup_num), XINT (field_num)), |
| 996 | 1277 PG_OS_CODING); |
| 1278 } | |
| 1279 | |
| 1280 DEFUN ("pq-get-length", Fpq_get_length, 3, 3, 0, /* | |
| 1281 Returns the length of a field value in bytes. | |
| 1282 If result is binary, i.e. a result of a binary portal, then the | |
| 1283 length returned does NOT include the size field of the varlena. (The | |
| 1284 data returned by PQgetvalue doesn't either.) | |
| 1285 */ | |
| 1286 (result, tup_num, field_num)) | |
| 1287 { | |
| 1288 PGresult *R; | |
| 1289 | |
| 1290 CHECK_PGRESULT (result); | |
| 1291 CHECK_INT (tup_num); | |
| 1292 CHECK_INT (field_num); | |
| 1293 R = (XPGRESULT (result))->pgresult; | |
| 1294 PUKE_IF_NULL (R); | |
| 1295 | |
| 1296 return make_int (PQgetlength (R, XINT (tup_num), XINT (field_num))); | |
| 1297 } | |
| 1298 | |
| 1299 DEFUN ("pq-get-is-null", Fpq_get_is_null, 3, 3, 0, /* | |
| 1300 Returns the null status of a field value. | |
| 1301 */ | |
| 1302 (result, tup_num, field_num)) | |
| 1303 { | |
| 1304 PGresult *R; | |
| 1305 | |
| 1306 CHECK_PGRESULT (result); | |
| 1307 CHECK_INT (tup_num); | |
| 1308 CHECK_INT (field_num); | |
| 1309 R = (XPGRESULT (result))->pgresult; | |
| 1310 PUKE_IF_NULL (R); | |
| 1311 | |
| 1312 return PQgetisnull (R, XINT (tup_num), XINT (field_num)) ? Qt : Qnil; | |
| 1313 } | |
| 1314 | |
| 1315 DEFUN ("pq-cmd-status", Fpq_cmd_status, 1, 1, 0, /* | |
| 1316 Returns the command status string from the SQL command that generated the result. | |
| 1317 */ | |
| 1318 (result)) | |
| 1319 { | |
| 1320 PGresult *R; | |
| 1321 | |
| 1322 CHECK_PGRESULT (result); | |
| 1323 R = (XPGRESULT (result))->pgresult; | |
| 1324 PUKE_IF_NULL (R); | |
| 1325 | |
|
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|
1326 return build_extstring (PQcmdStatus (R), PG_OS_CODING); |
| 996 | 1327 } |
| 1328 | |
| 1329 DEFUN ("pq-cmd-tuples", Fpq_cmd_tuples, 1, 1, 0, /* | |
| 1330 Returns the number of rows affected by the SQL command. | |
| 1331 */ | |
| 1332 (result)) | |
| 1333 { | |
| 1334 PGresult *R; | |
| 1335 | |
| 1336 CHECK_PGRESULT (result); | |
| 1337 R = (XPGRESULT (result))->pgresult; | |
| 1338 PUKE_IF_NULL (R); | |
| 1339 | |
|
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1340 return build_extstring (PQcmdTuples (R), PG_OS_CODING); |
| 996 | 1341 } |
| 1342 | |
| 1343 DEFUN ("pq-oid-value", Fpq_oid_value, 1, 1, 0, /* | |
| 1344 Returns the object id of the tuple inserted. | |
| 1345 */ | |
| 1346 (result)) | |
| 1347 { | |
| 1348 PGresult *R; | |
| 1349 | |
| 1350 CHECK_PGRESULT (result); | |
| 1351 R = (XPGRESULT (result))->pgresult; | |
| 1352 PUKE_IF_NULL (R); | |
| 1353 | |
| 1354 #ifdef HAVE_POSTGRESQLV7 | |
| 1355 return make_int (PQoidValue (R)); | |
| 1356 #else | |
| 1357 /* Use the old interface */ | |
| 1358 return make_int (atoi (PQoidStatus (R))); | |
| 1359 #endif | |
| 1360 } | |
| 1361 | |
| 1362 #ifdef HAVE_POSTGRESQLV7 | |
| 1363 DEFUN ("pq-set-nonblocking", Fpq_set_nonblocking, 2, 2, 0, /* | |
| 1364 Sets the PGconn's database connection non-blocking if the arg is TRUE | |
| 1365 or makes it non-blocking if the arg is FALSE, this will not protect | |
| 1366 you from PQexec(), you'll only be safe when using the non-blocking API. | |
| 1367 | |
| 1368 Needs to be called only on a connected database connection. | |
| 1369 */ | |
| 1370 (conn, arg)) | |
| 1371 { | |
| 1372 PGconn *P; | |
| 1373 | |
| 1374 CHECK_PGCONN (conn); | |
| 1375 P = (XPGCONN (conn))->pgconn; | |
| 1376 CHECK_LIVE_CONNECTION (P); | |
| 1377 | |
| 1378 return make_int (PQsetnonblocking (P, !NILP (arg))); | |
| 1379 } | |
| 1380 | |
| 1381 DEFUN ("pq-is-nonblocking", Fpq_is_nonblocking, 1, 1, 0, /* | |
| 1382 Return the blocking status of the database connection. | |
| 1383 */ | |
| 1384 (conn)) | |
| 1385 { | |
| 1386 PGconn *P; | |
| 1387 | |
| 1388 CHECK_PGCONN (conn); | |
| 1389 P = (XPGCONN (conn))->pgconn; | |
| 1390 CHECK_LIVE_CONNECTION (P); | |
| 1391 | |
| 1392 return PQisnonblocking (P) ? Qt : Qnil; | |
| 1393 } | |
| 1394 | |
| 1395 DEFUN ("pq-flush", Fpq_flush, 1, 1, 0, /* | |
| 1396 Force the write buffer to be written (or at least try). | |
| 1397 */ | |
| 1398 (conn)) | |
| 1399 { | |
| 1400 PGconn *P; | |
| 1401 | |
| 1402 CHECK_PGCONN (conn); | |
| 1403 P = (XPGCONN (conn))->pgconn; | |
| 1404 CHECK_LIVE_CONNECTION (P); | |
| 1405 | |
| 1406 return make_int (PQflush (P)); | |
| 1407 } | |
| 1408 #endif | |
| 1409 | |
| 1410 DEFUN ("pq-notifies", Fpq_notifies, 1, 1, 0, /* | |
| 1411 Return the latest async notification that has not yet been handled. | |
| 1412 If there has been a notification, then a list of two elements will be returned. | |
| 1413 The first element contains the relation name being notified, the second | |
| 1414 element contains the backend process ID number. nil is returned if there | |
| 1415 aren't any notifications to process. | |
| 1416 */ | |
| 1417 (conn)) | |
| 1418 { | |
| 1419 /* This function cannot GC */ | |
| 1420 PGconn *P; | |
| 1421 PGnotify *PGN; | |
| 1422 | |
| 1423 CHECK_PGCONN (conn); | |
| 1424 P = (XPGCONN (conn))->pgconn; | |
| 1425 CHECK_LIVE_CONNECTION (P); | |
| 1426 | |
| 1427 PGN = PQnotifies (P); | |
| 1428 if (!PGN) | |
| 1429 return Qnil; | |
| 1430 else | |
| 1431 { | |
| 1432 Lisp_Object temp; | |
| 1433 | |
|
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|
1434 temp = list2 (build_extstring (PGN->relname, PG_OS_CODING), make_int (PGN->be_pid)); |
| 996 | 1435 free ((void *)PGN); |
| 1436 return temp; | |
| 1437 } | |
| 1438 } | |
| 1439 | |
| 1440 #if defined (HAVE_POSTGRESQLV7) && defined(MULE) | |
| 1441 /* ###autoload */ | |
| 1442 DEFUN ("pq-env-2-encoding", Fpq_env_2_encoding, 0, 0, 0, /* | |
| 1443 Get encoding id from environment variable PGCLIENTENCODING. | |
| 1444 */ | |
| 1445 ()) | |
| 1446 { | |
| 1447 return make_int (PQenv2encoding ()); | |
| 1448 } | |
| 1449 #endif /* MULE */ | |
| 1450 | |
| 1451 DEFUN ("pq-lo-import", Fpq_lo_import, 2, 2, 0, /* | |
| 1452 */ | |
| 1453 (conn, filename)) | |
| 1454 { | |
| 1455 PGconn *P; | |
| 1456 char *c_filename; | |
| 1457 | |
| 1458 CHECK_PGCONN (conn); | |
| 1459 CHECK_STRING (filename); | |
| 1460 | |
| 1461 P = (XPGCONN (conn))->pgconn; | |
| 1462 CHECK_LIVE_CONNECTION (P); | |
| 1463 | |
|
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|
1464 LISP_PATHNAME_CONVERT_OUT (filename, c_filename); |
| 996 | 1465 |
| 1466 return make_int ((int)lo_import (P, c_filename)); | |
| 1467 } | |
| 1468 | |
| 1469 DEFUN ("pq-lo-export", Fpq_lo_export, 3, 3, 0, /* | |
| 1470 */ | |
| 1471 (conn, oid, filename)) | |
| 1472 { | |
| 1473 PGconn *P; | |
| 1474 char *c_filename; | |
| 1475 | |
| 1476 CHECK_PGCONN (conn); | |
| 1477 CHECK_INT (oid); | |
| 1478 CHECK_STRING (filename); | |
| 1479 | |
| 1480 P = (XPGCONN (conn))->pgconn; | |
| 1481 CHECK_LIVE_CONNECTION (P); | |
| 1482 | |
|
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|
1483 LISP_PATHNAME_CONVERT_OUT (filename, c_filename); |
| 996 | 1484 |
| 1485 return make_int ((int)lo_export (P, XINT (oid), c_filename)); | |
| 1486 } | |
| 1487 | |
| 1488 DEFUN ("pq-make-empty-pgresult", Fpq_make_empty_pgresult, 2, 2, 0, /* | |
| 1489 Make an empty PGresult object with the given status. | |
| 1490 */ | |
| 1491 (conn, status)) | |
| 1492 { | |
| 1493 PGconn *P; | |
| 1494 Lisp_PGresult *lpgr; | |
| 1495 PGresult *R; | |
| 1496 ExecStatusType est; | |
| 1497 | |
| 1498 CHECK_PGCONN (conn); | |
| 1499 P = (XPGCONN (conn))->pgconn; | |
| 1500 CHECK_LIVE_CONNECTION (P); /* needed here? */ | |
| 1501 | |
| 1502 if (EQ (status, Qpgres_empty_query)) est = PGRES_EMPTY_QUERY; | |
| 1503 else if (EQ (status, Qpgres_command_ok)) est = PGRES_COMMAND_OK; | |
| 1504 else if (EQ (status, Qpgres_tuples_ok)) est = PGRES_TUPLES_OK; | |
| 1505 else if (EQ (status, Qpgres_copy_out)) est = PGRES_COPY_OUT; | |
| 1506 else if (EQ (status, Qpgres_copy_in)) est = PGRES_COPY_IN; | |
| 1507 else if (EQ (status, Qpgres_bad_response)) est = PGRES_BAD_RESPONSE; | |
| 1508 else if (EQ (status, Qpgres_nonfatal_error)) est = PGRES_NONFATAL_ERROR; | |
| 1509 else if (EQ (status, Qpgres_fatal_error)) est = PGRES_FATAL_ERROR; | |
| 1510 else invalid_constant ("bad status symbol", status); | |
| 1511 | |
| 1512 R = PQmakeEmptyPGresult (P, est); | |
| 1513 if (!R) out_of_memory (0, Qunbound); | |
| 1514 | |
| 1515 lpgr = allocate_pgresult (); | |
| 1516 lpgr->pgresult = R; | |
| 1517 | |
| 1518 return make_pgresult (lpgr); | |
| 1519 } | |
| 1520 | |
| 1521 DEFUN ("pq-get-line", Fpq_get_line, 1, 1, 0, /* | |
| 1522 Retrieve a line from server in copy in operation. | |
| 1523 The return value is a dotted pair where the cons cell is an integer code: | |
| 1524 -1: Copying is complete | |
| 1525 0: A record is complete | |
| 1526 1: A record is incomplete, it will be continued in the next `pq-get-line' | |
| 1527 operation. | |
| 1528 and the cdr cell is returned string data. | |
| 1529 | |
| 1530 The copy operation is complete when the value `\.' (backslash dot) is | |
| 1531 returned. | |
| 1532 */ | |
| 1533 (conn)) | |
| 1534 { | |
| 1535 char buffer[BLCKSZ]; /* size of a Postgres disk block */ | |
| 1536 PGconn *P; | |
| 1537 int ret; | |
| 1538 | |
| 1539 CHECK_PGCONN (conn); | |
| 1540 P = (XPGCONN (conn))->pgconn; | |
| 1541 CHECK_LIVE_CONNECTION (P); | |
| 1542 | |
| 1543 ret = PQgetline (P, buffer, sizeof (buffer)); | |
| 1544 | |
|
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|
1545 return Fcons (make_int (ret), build_extstring (buffer, PG_OS_CODING)); |
| 996 | 1546 } |
| 1547 | |
| 1548 DEFUN ("pq-put-line", Fpq_put_line, 2, 2, 0, /* | |
| 1549 Send a line to the server in copy out operation. | |
| 1550 | |
| 1551 Returns t if the operation succeeded, nil otherwise. | |
| 1552 */ | |
| 1553 (conn, string)) | |
| 1554 { | |
| 1555 PGconn *P; | |
| 1556 char *c_string; | |
| 1557 | |
| 1558 CHECK_PGCONN (conn); | |
| 1559 CHECK_STRING (string); | |
| 1560 | |
| 1561 P = (XPGCONN (conn))->pgconn; | |
| 1562 CHECK_LIVE_CONNECTION (P); | |
| 1563 TO_EXTERNAL_FORMAT (LISP_STRING, string, | |
| 1564 C_STRING_ALLOCA, c_string, Qnative); | |
| 1565 | |
| 1566 return !PQputline (P, c_string) ? Qt : Qnil; | |
| 1567 } | |
| 1568 | |
| 1569 DEFUN ("pq-get-line-async", Fpq_get_line_async, 1, 1, 0, /* | |
| 1570 Get a line from the server in copy in operation asynchronously. | |
| 1571 | |
| 1572 This routine is for applications that want to do "COPY <rel> to stdout" | |
| 1573 asynchronously, that is without blocking. Having issued the COPY command | |
| 1574 and gotten a PGRES_COPY_OUT response, the app should call PQconsumeInput | |
| 1575 and this routine until the end-of-data signal is detected. Unlike | |
| 1576 PQgetline, this routine takes responsibility for detecting end-of-data. | |
| 1577 | |
| 1578 On each call, PQgetlineAsync will return data if a complete newline- | |
| 1579 terminated data line is available in libpq's input buffer, or if the | |
| 1580 incoming data line is too long to fit in the buffer offered by the caller. | |
| 1581 Otherwise, no data is returned until the rest of the line arrives. | |
| 1582 | |
| 1583 If -1 is returned, the end-of-data signal has been recognized (and removed | |
| 1584 from libpq's input buffer). The caller *must* next call PQendcopy and | |
| 1585 then return to normal processing. | |
| 1586 | |
| 1587 RETURNS: | |
| 1588 -1 if the end-of-copy-data marker has been recognized | |
| 1589 0 if no data is available | |
| 1590 >0 the number of bytes returned. | |
| 1591 The data returned will not extend beyond a newline character. If possible | |
| 1592 a whole line will be returned at one time. But if the buffer offered by | |
| 1593 the caller is too small to hold a line sent by the backend, then a partial | |
| 1594 data line will be returned. This can be detected by testing whether the | |
| 1595 last returned byte is '\n' or not. | |
| 1596 The returned string is *not* null-terminated. | |
| 1597 */ | |
| 1598 (conn)) | |
| 1599 { | |
| 1600 PGconn *P; | |
| 1601 char buffer[BLCKSZ]; | |
| 1602 int ret; | |
| 1603 | |
| 1604 CHECK_PGCONN (conn); | |
| 1605 | |
| 1606 P = (XPGCONN (conn))->pgconn; | |
| 1607 CHECK_LIVE_CONNECTION (P); | |
| 1608 | |
| 1609 ret = PQgetlineAsync (P, buffer, sizeof (buffer)); | |
| 1610 | |
| 1611 if (ret == -1) return Qt; /* done! */ | |
| 1612 else if (!ret) return Qnil; /* no data yet */ | |
| 1613 else return Fcons (make_int (ret), | |
|
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|
1614 make_extstring ((Extbyte *) buffer, ret, PG_OS_CODING)); |
| 996 | 1615 } |
| 1616 | |
| 1617 DEFUN ("pq-put-nbytes", Fpq_put_nbytes, 2, 2, 0, /* | |
| 1618 Asynchronous copy out. | |
| 1619 */ | |
| 1620 (conn, data)) | |
| 1621 { | |
| 1622 /* NULs are not allowed. I don't think this matters at this time. */ | |
| 1623 PGconn *P; | |
| 1624 char *c_data; | |
| 1625 | |
| 1626 CHECK_PGCONN (conn); | |
| 1627 CHECK_STRING (data); | |
| 1628 | |
| 1629 P = (XPGCONN (conn))->pgconn; | |
| 1630 CHECK_LIVE_CONNECTION (P); | |
| 1631 TO_EXTERNAL_FORMAT (LISP_STRING, data, | |
| 1632 C_STRING_ALLOCA, c_data, Qnative); | |
| 1633 | |
| 1634 return !PQputnbytes (P, c_data, strlen (c_data)) ? Qt : Qnil; | |
| 1635 } | |
| 1636 | |
| 1637 DEFUN ("pq-end-copy", Fpq_end_copy, 1, 1, 0, /* | |
| 1638 End a copying operation. | |
| 1639 */ | |
| 1640 (conn)) | |
| 1641 { | |
| 1642 PGconn *P; | |
| 1643 | |
| 1644 CHECK_PGCONN (conn); | |
| 1645 P = (XPGCONN (conn))->pgconn; | |
| 1646 CHECK_LIVE_CONNECTION (P); | |
| 1647 | |
| 1648 return PQendcopy (P) ? Qt : Qnil; | |
| 1649 } | |
| 1650 | |
| 1651 void | |
| 1652 syms_of_postgresql(void) | |
| 1653 { | |
| 1654 #ifndef RUNNING_XEMACS_21_1 | |
|
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1655 INIT_LISP_OBJECT (pgconn); |
|
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1656 INIT_LISP_OBJECT (pgresult); |
| 996 | 1657 #endif |
| 1658 DEFSYMBOL (Qpostgresql); | |
| 1659 | |
| 1660 /* opaque exported types */ | |
| 1661 DEFSYMBOL (Qpgconnp); | |
| 1662 DEFSYMBOL (Qpgresultp); | |
| 1663 | |
| 1664 /* connection status types */ | |
| 1665 defsymbol (&Qpg_connection_ok, "pg::connection-ok"); | |
| 1666 defsymbol (&Qpg_connection_bad, "pg::connection-bad"); | |
| 1667 defsymbol (&Qpg_connection_started, "pg::connection-started"); | |
| 1668 defsymbol (&Qpg_connection_made, "pg::connection-made"); | |
| 1669 defsymbol (&Qpg_connection_awaiting_response, "pg::connection-awaiting-response"); | |
| 1670 defsymbol (&Qpg_connection_auth_ok, "pg::connection-auth-ok"); | |
| 1671 defsymbol (&Qpg_connection_setenv, "pg::connection-setenv"); | |
| 1672 | |
| 1673 /* Fields of PGconn */ | |
| 1674 defsymbol (&Qpqdb, "pq::db"); | |
| 1675 defsymbol (&Qpquser, "pq::user"); | |
| 1676 defsymbol (&Qpqpass, "pq::pass"); | |
| 1677 defsymbol (&Qpqhost, "pq::host"); | |
| 1678 defsymbol (&Qpqport, "pq::port"); | |
| 1679 defsymbol (&Qpqtty, "pq::tty"); | |
| 1680 defsymbol (&Qpqoptions, "pq::options"); | |
| 1681 defsymbol (&Qpqstatus, "pq::status"); | |
| 1682 defsymbol (&Qpqerrormessage, "pq::error-message"); | |
| 1683 defsymbol (&Qpqbackendpid, "pq::backend-pid"); | |
| 1684 | |
| 1685 /* Query status results */ | |
| 1686 defsymbol (&Qpgres_empty_query, "pgres::empty-query"); | |
| 1687 defsymbol (&Qpgres_command_ok, "pgres::command-ok"); | |
| 1688 defsymbol (&Qpgres_tuples_ok, "pgres::tuples-ok"); | |
| 1689 defsymbol (&Qpgres_copy_out, "pgres::copy-out"); | |
| 1690 defsymbol (&Qpgres_copy_in, "pgres::copy-in"); | |
| 1691 defsymbol (&Qpgres_bad_response, "pgres::bad-response"); | |
| 1692 defsymbol (&Qpgres_nonfatal_error, "pgres::nonfatal-error"); | |
| 1693 defsymbol (&Qpgres_fatal_error, "pgres::fatal-error"); | |
| 1694 | |
| 1695 /* Poll status results */ | |
| 1696 defsymbol (&Qpgres_polling_failed, "pgres::polling-failed"); | |
| 1697 defsymbol (&Qpgres_polling_reading, "pgres::polling-reading"); | |
| 1698 defsymbol (&Qpgres_polling_writing, "pgres::polling-writing"); | |
| 1699 defsymbol (&Qpgres_polling_ok, "pgres::polling-ok"); | |
| 1700 defsymbol (&Qpgres_polling_active, "pgres::polling-active"); | |
| 1701 | |
| 1702 #ifdef HAVE_POSTGRESQLV7 | |
| 1703 DEFSUBR (Fpq_connect_start); | |
| 1704 DEFSUBR (Fpq_connect_poll); | |
| 1705 #ifdef MULE | |
| 1706 DEFSUBR (Fpq_client_encoding); | |
| 1707 DEFSUBR (Fpq_set_client_encoding); | |
| 1708 #endif /* MULE */ | |
| 1709 #endif /* HAVE_POSTGRESQLV7 */ | |
| 1710 DEFSUBR (Fpq_conn_defaults); | |
| 1711 DEFSUBR (Fpq_connectdb); | |
| 1712 DEFSUBR (Fpq_finish); | |
| 1713 DEFSUBR (Fpq_clear); | |
| 1714 DEFSUBR (Fpq_is_busy); | |
| 1715 DEFSUBR (Fpq_consume_input); | |
| 1716 | |
| 1717 DEFSUBR (Fpq_reset); | |
| 1718 #ifdef HAVE_POSTGRESQLV7 | |
| 1719 DEFSUBR (Fpq_reset_start); | |
| 1720 DEFSUBR (Fpq_reset_poll); | |
| 1721 #endif | |
| 1722 DEFSUBR (Fpq_request_cancel); | |
| 1723 DEFSUBR (Fpq_pgconn); | |
| 1724 | |
| 1725 DEFSUBR (Fpq_exec); | |
| 1726 DEFSUBR (Fpq_send_query); | |
| 1727 DEFSUBR (Fpq_get_result); | |
| 1728 DEFSUBR (Fpq_result_status); | |
| 1729 DEFSUBR (Fpq_res_status); | |
| 1730 DEFSUBR (Fpq_result_error_message); | |
| 1731 DEFSUBR (Fpq_ntuples); | |
| 1732 DEFSUBR (Fpq_nfields); | |
| 1733 DEFSUBR (Fpq_binary_tuples); | |
| 1734 DEFSUBR (Fpq_fname); | |
| 1735 DEFSUBR (Fpq_fnumber); | |
| 1736 DEFSUBR (Fpq_ftype); | |
| 1737 DEFSUBR (Fpq_fsize); | |
| 1738 DEFSUBR (Fpq_fmod); | |
| 1739 /***/ | |
| 1740 DEFSUBR (Fpq_get_value); | |
| 1741 DEFSUBR (Fpq_get_length); | |
| 1742 DEFSUBR (Fpq_get_is_null); | |
| 1743 DEFSUBR (Fpq_cmd_status); | |
| 1744 DEFSUBR (Fpq_cmd_tuples); | |
| 1745 DEFSUBR (Fpq_oid_value); | |
| 1746 | |
| 1747 #ifdef HAVE_POSTGRESQLV7 | |
| 1748 DEFSUBR (Fpq_set_nonblocking); | |
| 1749 DEFSUBR (Fpq_is_nonblocking); | |
| 1750 DEFSUBR (Fpq_flush); | |
| 1751 #endif | |
| 1752 DEFSUBR (Fpq_notifies); | |
| 1753 | |
| 1754 #if defined (HAVE_POSTGRESQLV7) && defined(MULE) | |
| 1755 DEFSUBR (Fpq_env_2_encoding); | |
| 1756 #endif | |
| 1757 | |
| 1758 DEFSUBR (Fpq_lo_import); | |
| 1759 DEFSUBR (Fpq_lo_export); | |
| 1760 | |
| 1761 DEFSUBR (Fpq_make_empty_pgresult); | |
| 1762 | |
| 1763 /* copy in/out functions */ | |
| 1764 DEFSUBR (Fpq_get_line); | |
| 1765 DEFSUBR (Fpq_put_line); | |
| 1766 DEFSUBR (Fpq_get_line_async); | |
| 1767 DEFSUBR (Fpq_put_nbytes); | |
| 1768 DEFSUBR (Fpq_end_copy); | |
| 1769 } | |
| 1770 | |
| 1771 void | |
| 1772 vars_of_postgresql(void) | |
| 1773 { | |
| 1774 Fprovide (Qpostgresql); | |
| 1775 #ifdef HAVE_POSTGRESQLV7 | |
| 1776 Fprovide (intern ("postgresqlv7")); | |
| 1777 #endif | |
| 1778 #ifndef RUNNING_XEMACS_21_1 | |
| 1779 Vpg_coding_system = Qnative; | |
| 1780 DEFVAR_LISP ("pg-coding-system", &Vpg_coding_system /* | |
| 1781 Default Postgres client coding system. | |
| 1782 */ ); | |
| 1783 #endif | |
| 1784 | |
| 1785 DEFVAR_LISP ("pg:host", &VXPGHOST /* | |
| 1786 Default PostgreSQL server name. | |
| 1787 If not set, the server running on the local host is used. The | |
| 1788 initial value is set from the PGHOST environment variable. | |
| 1789 */ ); | |
| 1790 | |
| 1791 DEFVAR_LISP ("pg:user", &VXPGUSER /* | |
| 1792 Default PostgreSQL user name. | |
| 1793 This value is used when connecting to a database for authentication. | |
| 1794 The initial value is set from the PGUSER environment variable. | |
| 1795 */ ); | |
| 1796 | |
| 1797 DEFVAR_LISP ("pg:options", &VXPGOPTIONS /* | |
| 1798 Default PostgreSQL user name. | |
| 1799 This value is used when connecting to a database for authentication. | |
| 1800 The initial value is set from the PGUSER environment variable. | |
| 1801 */ ); | |
| 1802 | |
| 1803 DEFVAR_LISP ("pg:port", &VXPGPORT /* | |
| 1804 Default port to connect to PostgreSQL backend. | |
| 1805 This value is used when connecting to a database. | |
| 1806 The initial value is set from the PGPORT environment variable. | |
| 1807 */ ); | |
| 1808 | |
| 1809 DEFVAR_LISP ("pg:tty", &VXPGTTY /* | |
| 1810 Default debugging TTY. | |
| 1811 There is no useful setting of this variable in the XEmacs Lisp API. | |
| 1812 The initial value is set from the PGTTY environment variable. | |
| 1813 */ ); | |
| 1814 | |
| 1815 DEFVAR_LISP ("pg:database", &VXPGDATABASE /* | |
| 1816 Default database to connect to. | |
| 1817 The initial value is set from the PGDATABASE environment variable. | |
| 1818 */ ); | |
| 1819 | |
| 1820 DEFVAR_LISP ("pg:realm", &VXPGREALM /* | |
| 1821 Default kerberos realm to use for authentication. | |
| 1822 The initial value is set from the PGREALM environment variable. | |
| 1823 */ ); | |
| 1824 | |
| 1825 #ifdef MULE | |
| 1826 /* It's not clear whether this is any use. My intent is to | |
| 1827 autodetect the coding system from the database. */ | |
| 1828 DEFVAR_LISP ("pg:client-encoding", &VXPGCLIENTENCODING /* | |
| 1829 Default client encoding to use. | |
| 1830 The initial value is set from the PGCLIENTENCODING environment variable. | |
| 1831 */ ); | |
| 1832 #endif | |
| 1833 | |
| 1834 #if !defined(HAVE_POSTGRESQLV7) | |
| 1835 DEFVAR_LISP ("pg:authtype", &VXPGAUTHTYPE /* | |
| 1836 Default authentication to use. | |
| 1837 The initial value is set from the PGAUTHTYPE environment variable. | |
| 1838 | |
| 1839 WARNING: This variable has gone away in versions of PostgreSQL newer | |
| 1840 than 6.5. | |
| 1841 */ ); | |
| 1842 #endif | |
| 1843 | |
| 1844 DEFVAR_LISP ("pg:geqo", &VXPGGEQO /* | |
| 1845 Genetic Query Optimizer options. | |
| 1846 The initial value is set from the PGGEQO environment variable. | |
| 1847 */ ); | |
| 1848 | |
| 1849 DEFVAR_LISP ("pg:cost-index", &VXPGCOSTINDEX /* | |
| 1850 Default cost index options. | |
| 1851 The initial value is set from the PGCOSTINDEX environment variable. | |
| 1852 */ ); | |
| 1853 | |
| 1854 DEFVAR_LISP ("pg:cost-heap", &VXPGCOSTHEAP /* | |
| 1855 Default cost heap options. | |
| 1856 The initial value is set from the PGCOSTHEAP environment variable. | |
| 1857 */ ); | |
| 1858 | |
| 1859 DEFVAR_LISP ("pg:tz", &VXPGTZ /* | |
| 1860 Default timezone to use. | |
| 1861 The initial value is set from the PGTZ environment variable. | |
| 1862 */ ); | |
| 1863 | |
| 1864 DEFVAR_LISP ("pg:date-style", &VXPGDATESTYLE /* | |
| 1865 Default date style to use. | |
| 1866 The initial value is set from the PGDATESTYLE environment variable. | |
| 1867 */ ); | |
| 1868 | |
| 1869 #ifdef HAVE_SHLIB | |
| 1870 /* If we are building this as a module, we need the initializing function to | |
| 1871 run at module load time. */ | |
| 1872 init_postgresql_from_environment (); | |
| 1873 #endif | |
| 1874 } | |
| 1875 | |
| 1876 /* These initializations should not be done at dump-time. */ | |
| 1877 void | |
| 1878 init_postgresql_from_environment (void) | |
| 1879 { | |
| 1880 Ibyte *p; | |
| 1881 | |
| 1882 #define FROB(envvar, var) \ | |
| 1883 if ((p = egetenv (envvar))) \ | |
|
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1884 var = build_istring (p); \ |
| 996 | 1885 else \ |
| 1886 var = Qnil | |
| 1887 | |
| 1888 if (initialized) | |
| 1889 { | |
| 1890 FROB ("PGHOST", VXPGHOST); | |
| 1891 FROB ("PGUSER", VXPGUSER); | |
| 1892 FROB ("PGOPTIONS", VXPGOPTIONS); | |
| 1893 | |
| 1894 if ((p = egetenv ("PGPORT"))) | |
| 1895 VXPGPORT = make_int (atoi ((char *) p)); | |
| 1896 else | |
| 1897 VXPGPORT = Qnil; | |
| 1898 | |
| 1899 FROB ("PGTTY", VXPGTTY); | |
| 1900 FROB ("PGDATABASE", VXPGDATABASE); | |
| 1901 FROB ("PGREALM", VXPGREALM); | |
| 1902 #ifdef MULE | |
| 1903 /* It's not clear whether this is any use. My intent is to | |
| 1904 autodetect the coding system from the database. */ | |
| 1905 FROB ("PGCLIENTENCODING", VXPGCLIENTENCODING); | |
| 1906 #endif | |
| 1907 | |
| 1908 #if !defined(HAVE_POSTGRESQLV7) | |
| 1909 FROB ("PGAUTHTYPE", VXPGAUTHTYPE); | |
| 1910 #endif | |
| 1911 | |
| 1912 FROB ("PGGEQO", VXPGGEQO); | |
| 1913 FROB ("PGCOSTINDEX", VXPGCOSTINDEX); | |
| 1914 FROB ("PGCOSTHEAP", VXPGCOSTHEAP); | |
| 1915 FROB ("PGTZ", VXPGTZ); | |
| 1916 FROB ("PGDATESTYLE", VXPGDATESTYLE); | |
| 1917 #undef FROB | |
| 1918 } | |
| 1919 } | |
| 1920 | |
| 1921 #ifdef HAVE_SHLIB | |
| 1706 | 1922 EXTERN_C void unload_postgresql (void); |
| 996 | 1923 void |
| 1924 unload_postgresql (void) | |
| 1925 { | |
| 1926 #ifndef RUNNING_XEMACS_21_1 | |
| 1927 /* Remove defined types */ | |
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1928 UNDEF_LISP_OBJECT (pgconn); |
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1929 UNDEF_LISP_OBJECT (pgresult); |
| 996 | 1930 #endif |
| 1931 | |
| 1932 /* Remove staticpro'ing of symbols */ | |
| 1933 unstaticpro_nodump (&Qpostgresql); | |
| 1934 unstaticpro_nodump (&Qpgconnp); | |
| 1935 unstaticpro_nodump (&Qpgresultp); | |
| 1936 unstaticpro_nodump (&Qpg_connection_ok); | |
| 1937 unstaticpro_nodump (&Qpg_connection_bad); | |
| 1938 unstaticpro_nodump (&Qpg_connection_started); | |
| 1939 unstaticpro_nodump (&Qpg_connection_made); | |
| 1940 unstaticpro_nodump (&Qpg_connection_awaiting_response); | |
| 1941 unstaticpro_nodump (&Qpg_connection_auth_ok); | |
| 1942 unstaticpro_nodump (&Qpg_connection_setenv); | |
| 1943 unstaticpro_nodump (&Qpqdb); | |
| 1944 unstaticpro_nodump (&Qpquser); | |
| 1945 unstaticpro_nodump (&Qpqpass); | |
| 1946 unstaticpro_nodump (&Qpqhost); | |
| 1947 unstaticpro_nodump (&Qpqport); | |
| 1948 unstaticpro_nodump (&Qpqtty); | |
| 1949 unstaticpro_nodump (&Qpqoptions); | |
| 1950 unstaticpro_nodump (&Qpqstatus); | |
| 1951 unstaticpro_nodump (&Qpqerrormessage); | |
| 1952 unstaticpro_nodump (&Qpqbackendpid); | |
| 1953 unstaticpro_nodump (&Qpgres_empty_query); | |
| 1954 unstaticpro_nodump (&Qpgres_command_ok); | |
| 1955 unstaticpro_nodump (&Qpgres_tuples_ok); | |
| 1956 unstaticpro_nodump (&Qpgres_copy_out); | |
| 1957 unstaticpro_nodump (&Qpgres_copy_in); | |
| 1958 unstaticpro_nodump (&Qpgres_bad_response); | |
| 1959 unstaticpro_nodump (&Qpgres_nonfatal_error); | |
| 1960 unstaticpro_nodump (&Qpgres_fatal_error); | |
| 1961 unstaticpro_nodump (&Qpgres_polling_failed); | |
| 1962 unstaticpro_nodump (&Qpgres_polling_reading); | |
| 1963 unstaticpro_nodump (&Qpgres_polling_writing); | |
| 1964 unstaticpro_nodump (&Qpgres_polling_ok); | |
| 1965 unstaticpro_nodump (&Qpgres_polling_active); | |
| 1966 } | |
| 1967 #endif /* HAVE_SHLIB */ |