db-mysql/mysql-api.lisp

   1 ;;;; -*- Mode: LISP; Syntax: ANSI-Common-Lisp; Base: 10 -*-
   2 ;;;; *************************************************************************
   3 ;;;; FILE IDENTIFICATION
   4 ;;;;
   5 ;;;; Name:          mysql-api.lisp
   6 ;;;; Purpose:       Low-level MySQL interface using UFFI
   7 ;;;; Programmers:   Kevin M. Rosenberg based on
   8 ;;;;                Original code by Pierre R. Mai
   9 ;;;; Date Started:  Feb 2002
  10 ;;;;
  11 ;;;; $Id$
  12 ;;;;
  13 ;;;; This file, part of CLSQL, is Copyright (c) 2002 by Kevin M. Rosenberg
  14 ;;;; and Copyright (c) 1999-2001 by Pierre R. Mai
  15 ;;;;
  16 ;;;; CLSQL users are granted the rights to distribute and use this software
  17 ;;;; as governed by the terms of the Lisp Lesser GNU Public License
  18 ;;;; (http://opensource.franz.com/preamble.html), also known as the LLGPL.
  19 ;;;; *************************************************************************
  20
  21 (in-package #:mysql)
  22
  23 ;;;; Modifications from original code
  24 ;;;;  - Updated C-structures to conform to structures in MySQL 3.23.46
  25 ;;;;  - Changed from CMUCL interface to UFFI
  26 ;;;;  - Added and call a C-helper file to support 64-bit integers
  27 ;;;;    that are used in a few routines.
  28 ;;;;  - Removed all references to interiors of C-structions, this will
  29 ;;;;    increase robustness when MySQL's internal structures change.
  30
  31 ;;;; Type definitions
  32
  33 ;;; Basic Types
  34
  35 (uffi:def-foreign-type mysql-socket :int)
  36 (uffi:def-foreign-type mysql-bool :byte)
  37 (uffi:def-foreign-type mysql-byte :unsigned-char)
  38
  39 (uffi:def-enum mysql-net-type
  40     (:tcp-ip
  41      :socket
  42      :named-pipe))
  43
  44 (uffi:def-struct mysql-net
  45     (vio :pointer-void)
  46   (fd mysql-socket)
  47   (fcntl :int)
  48   (buff (* :unsigned-char))
  49   (buff-end (* :unsigned-char))
  50   (write-pos (* :unsigned-char))
  51   (read-pos (* :unsigned-char))
  52   (last-error (:array :char 200))
  53   (last-errno :unsigned-int)
  54   (max-packet :unsigned-int)
  55   (timeout :unsigned-int)
  56   (pkt-nr :unsigned-int)
  57   (error mysql-bool)
  58   (return-errno mysql-bool)
  59   (compress mysql-bool)
  60   (no-send-ok mysql-bool)
  61   (remain-in-buf :unsigned-long)
  62   (length :unsigned-long)
  63   (buf-length :unsigned-long)
  64   (where-b :unsigned-long)
  65   (return-status (* :unsigned-int))
  66   (reading-or-writing :unsigned-char)
  67   (save-char :char))
  68
  69 ;;; Mem-Root
  70 (uffi:def-struct mysql-used-mem
  71     (next :pointer-self)
  72   (left :unsigned-int)
  73   (size :unsigned-int))
  74
  75 (uffi:def-struct mysql-mem-root
  76     (free (:struct-pointer mysql-used-mem))
  77   (used (:struct-pointer mysql-used-mem))
  78   (pre-alloc (:struct-pointer mysql-used-mem))
  79   (min-alloc :unsigned-int)
  80   (block-size :unsigned-int)
  81   (error-handler :pointer-void))
  82
  83 ;;; MYSQL-FIELD
  84 (uffi:def-enum mysql-field-types
  85     (:decimal
  86      :tiny
  87      :short
  88      :long
  89      :float
  90      :double
  91      :null
  92      :timestamp
  93      :longlong
  94      :int24
  95      :date
  96      :time
  97      :datetime
  98      :year
  99      :newdate
 100      (:enum 247)
 101      (:set 248)
 102      (:tiny-blob 249)
 103      (:medium-blob 250)
 104      (:long-blob 251)
 105      (:blob 252)
 106      (:var-string 253)
 107      (:string 254)
 108      (:geometry 255)))
 109
 110 #+mysql-client-v3
 111 (uffi:def-struct mysql-field
 112     (name (* :char))
 113   (table (* :char))
 114   (def (* :char))
 115   (type mysql-field-types)
 116   (length :unsigned-int)
 117   (max-length :unsigned-int)
 118   (flags :unsigned-int)
 119   (decimals :unsigned-int))
 120
 121 ;; structure changed in mysql 4 client
 122 #+(and mysql-client-v4 (not mysql-client-v4.1))
 123 (uffi:def-struct mysql-field
 124     (name (* :char))
 125   (table (* :char))
 126   (org_table (* :char))
 127   (db (* :char))
 128   (def (* :char))
 129   (length :unsigned-long)
 130   (max-length :unsigned-long)
 131   (flags :unsigned-int)
 132   (decimals :unsigned-int)
 133   (type mysql-field-types))
 134
 135 #+(or mysql-client-v4.1 mysql-client-v5)
 136 (uffi:def-struct mysql-field
 137     (name (* :char))
 138   (org_name (* :char))
 139   (table (* :char))
 140   (org_table (* :char))
 141   (db (* :char))
 142   (catalog_db (* :char))
 143   (def (* :char))
 144   (length :unsigned-long)
 145   (max-length :unsigned-long)
 146   (name-length :unsigned-int)
 147   (org-name-length :unsigned-int)
 148   (table-length :unsigned-int)
 149   (org-table-length :unsigned-int)
 150   (db-length :unsigned-int)
 151   (catalog-length :unsigned-int)
 152   (def-length :unsigned-int)
 153   (flags :unsigned-int)
 154   (decimals :unsigned-int)
 155   (charsetnr :unsigned-int)
 156   (type mysql-field-types))
 157
 158
 159 (uffi:def-struct mysql-time
 160     (year :unsigned-int)
 161   (month :unsigned-int)
 162   (day :unsigned-int)
 163   (hour :unsigned-int)
 164   (minute :unsigned-int)
 165   (second :unsigned-int)
 166   (second-part :unsigned-long)
 167   (neg mysql-bool)
 168   (time-type :int))
 169
 170 ;;; MYSQL-ROWS
 171
 172 (uffi:def-array-pointer mysql-row (* :unsigned-char))
 173
 174 (uffi:def-array-pointer mysql-field-vector (* mysql-field))
 175
 176 (uffi:def-foreign-type mysql-field-offset :unsigned-int)
 177
 178 (uffi:def-struct mysql-rows
 179     (next :pointer-self)
 180   (data mysql-row))
 181
 182 (uffi:def-foreign-type mysql-row-offset (:struct-pointer mysql-rows))
 183
 184 (uffi:def-struct mysql-data
 185     (rows-high32 :unsigned-long)
 186   (rows-low32 :unsigned-long)
 187   (fields :unsigned-int)
 188   (data (:struct-pointer mysql-rows))
 189   (alloc (:struct mysql-mem-root)))
 190
 191 ;;; MYSQL
 192 (uffi:def-struct mysql-options
 193     (connect-timeout :unsigned-int)
 194   (client-flag :unsigned-int)
 195   (compress mysql-bool)
 196   (named-pipe mysql-bool)
 197   (port :unsigned-int)
 198   (host (* :char))
 199   (init-command (* :char))
 200   (user (* :char))
 201   (password (* :char))
 202   (unix-socket (* :char))
 203   (db (* :char))
 204   (my-cnf-file (* :char))
 205   (my-cnf-group (* :char))
 206   (charset-dir (* :char))
 207   (charset-name (* :char))
 208   (use-ssl mysql-bool)
 209   (ssl-key (* :char))
 210   (ssl-cert (* :char))
 211   (ssl-ca (* :char))
 212   (ssl-capath (* :char)))
 213
 214 (uffi:def-enum mysql-option
 215     (:connect-timeout
 216      :compress
 217      :named-pipe
 218      :init-command
 219      :read-default-file
 220      :read-default-group))
 221
 222 (uffi:def-enum mysql-status
 223     (:ready
 224      :get-result
 225      :use-result))
 226
 227 (uffi:def-struct mysql-mysql
 228     (net (:struct mysql-net))
 229   (connected-fd (* :char))
 230   (host (* :char))
 231   (user (* :char))
 232   (passwd (* :char))
 233   (unix-socket (* :char))
 234   (server-version (* :char))
 235   (host-info (* :char))
 236   (info (* :char))
 237   (db (* :char))
 238   (port :unsigned-int)
 239   (client-flag :unsigned-int)
 240   (server-capabilities :unsigned-int)
 241   (protocol-version :unsigned-int)
 242   (field-count :unsigned-int)
 243   (server-status :unsigned-int)
 244   (thread-id :unsigned-long)
 245   (affected-rows-high32 :unsigned-long)
 246   (affected-rows-low32 :unsigned-long)
 247   (insert-id-high32 :unsigned-long)
 248   (insert-id-low32 :unsigned-long)
 249   (extra-info-high32 :unsigned-long)
 250   (extra-info-low32 :unsigned-long)
 251   (packet-length :unsigned-long)
 252   (status mysql-status)
 253   (fields (:struct-pointer mysql-field))
 254   (field-alloc (:struct mysql-mem-root))
 255   (free-me mysql-bool)
 256   (reconnect mysql-bool)
 257   (options (:struct mysql-options))
 258   (scramble-buff (:array :char 9))
 259   (charset :pointer-void)
 260   (server-language :unsigned-int))
 261
 262
 263 ;;; MYSQL-RES
 264 (uffi:def-struct mysql-mysql-res
 265     (row-count-high32 :unsigned-long)
 266   (row-count-low32 :unsigned-long)
 267   (field-count :unsigned-int)
 268   (current-field :unsigned-int)
 269   (fields (:struct-pointer mysql-field))
 270   (data (:struct-pointer mysql-data))
 271   (data-cursor (:struct-pointer mysql-rows))
 272   (field-alloc (:struct mysql-mem-root))
 273   (row mysql-row)
 274   (current-row mysql-row)
 275   (lengths (* :unsigned-long))
 276   (handle (:struct-pointer mysql-mysql))
 277   (eof mysql-bool))
 278
 279 #+(or mysql-client-v4.1 mysql-client-v5)
 280 (uffi:def-enum mysql-field-types
 281     (:ready
 282      :get-result
 283      :use-result))
 284
 285 #+(or mysql-client-v4.1 mysql-client-v5)
 286 (uffi:def-struct mysql-bind
 287     (length (* :unsigned-long))
 288   (is-null (* mysql-bool))
 289   (buffer :pointer-void)
 290   (buffer-type :int)
 291   (buffer-length :unsigned-long)
 292   ;; internal use
 293   (inter_buffer (* :unsigned-char))
 294   (offset :unsigned-long)
 295   (internal-length :unsigned-long)
 296   (param-number :unsigned-int)
 297   (pack-length :unsigned-int)
 298   (is-signed mysql-bool)
 299   (long-data-used mysql-bool)
 300   (internal-is-null mysql-bool)
 301   (store-param-func :pointer-void)
 302   (fetch-result :pointer-void)
 303   (skip-result :pointer-void))
 304
 305 ;;;; The Foreign C routines
 306 (declaim (inline mysql-init))
 307 (uffi:def-function "mysql_init"
 308   ((mysql (* mysql-mysql)))
 309   :module "mysql"
 310   :returning (* mysql-mysql))
 311
 312 ;; Need to comment this out for LW 4.2.6
 313 ;; ? bug in LW version
 314 #-lispworks (declaim (inline mysql-real-connect))
 315 (uffi:def-function "mysql_real_connect"
 316     ((mysql (* mysql-mysql))
 317      (host :cstring)
 318      (user :cstring)
 319      (passwd :cstring)
 320      (db :cstring)
 321      (port :unsigned-int)
 322      (unix-socket :cstring)
 323      (clientflag :unsigned-long))
 324   :module "mysql"
 325   :returning (* mysql-mysql))
 326
 327 (declaim (inline mysql-close))
 328 (uffi:def-function "mysql_close"
 329     ((sock (* mysql-mysql)))
 330   :module "mysql"
 331   :returning :void)
 332
 333 (declaim (inline mysql-select-db))
 334 (uffi:def-function "mysql_select_db"
 335   ((mysql (* mysql-mysql))
 336    (db :cstring))
 337   :module "mysql"
 338   :returning :int)
 339
 340 (declaim (inline mysql-query))
 341 (uffi:def-function "mysql_query"
 342     ((mysql (* mysql-mysql))
 343      (query :cstring))
 344   :module "mysql"
 345   :returning :int)
 346
 347  ;;; I doubt that this function is really useful for direct Lisp usage,
 348 ;;; but it is here for completeness...
 349
 350 (declaim (inline mysql-real-query))
 351 (uffi:def-function "mysql_real_query"
 352     ((mysql (* mysql-mysql))
 353      (query :cstring)
 354      (length :unsigned-int))
 355   :module "mysql"
 356   :returning :int)
 357
 358 (declaim (inline mysql-shutdown))
 359 (uffi:def-function "mysql_shutdown"
 360   ((mysql (* mysql-mysql)))
 361   :module "mysql"
 362   :returning :int)
 363
 364 (declaim (inline mysql-dump-debug-info))
 365 (uffi:def-function "mysql_dump_debug_info"
 366   ((mysql (* mysql-mysql)))
 367   :module "mysql"
 368   :returning :int)
 369
 370 (declaim (inline mysql-refresh))
 371 (uffi:def-function "mysql_refresh"
 372   ((mysql (* mysql-mysql))
 373    (refresh-options :unsigned-int))
 374   :module "mysql"
 375   :returning :int)
 376
 377 (declaim (inline mysql-kill))
 378 (uffi:def-function "mysql_kill"
 379     ((mysql (* mysql-mysql))
 380      (pid :unsigned-long))
 381   :module "mysql"
 382   :returning :int)
 383
 384 (declaim (inline mysql-ping))
 385 (uffi:def-function "mysql_ping"
 386     ((mysql (* mysql-mysql)))
 387   :module "mysql"
 388   :returning :int)
 389
 390 (declaim (inline mysql-stat))
 391 (uffi:def-function "mysql_stat"
 392   ((mysql (* mysql-mysql)))
 393   :module "mysql"
 394   :returning :cstring)
 395
 396 (declaim (inline mysql-get-server-info))
 397 (uffi:def-function "mysql_get_server_info"
 398     ((mysql (* mysql-mysql)))
 399   :module "mysql"
 400   :returning :cstring)
 401
 402 (declaim (inline mysql-get-host-info))
 403 (uffi:def-function "mysql_get_host_info"
 404     ((mysql (* mysql-mysql)))
 405   :module "mysql"
 406   :returning :cstring)
 407
 408 (declaim (inline mysql-get-proto-info))
 409 (uffi:def-function "mysql_get_proto_info"
 410   ((mysql (* mysql-mysql)))
 411   :module "mysql"
 412   :returning :unsigned-int)
 413
 414 (declaim (inline mysql-list-dbs))
 415 (uffi:def-function "mysql_list_dbs"
 416   ((mysql (* mysql-mysql))
 417    (wild :cstring))
 418   :module "mysql"
 419   :returning (* mysql-mysql-res))
 420
 421 (declaim (inline mysql-list-tables))
 422 (uffi:def-function "mysql_list_tables"
 423   ((mysql (* mysql-mysql))
 424    (wild :cstring))
 425   :module "mysql"
 426   :returning (* mysql-mysql-res))
 427
 428 (declaim (inline mysql-list-fields))
 429 (uffi:def-function "mysql_list_fields"
 430   ((mysql (* mysql-mysql))
 431    (table :cstring)
 432    (wild :cstring))
 433   :module "mysql"
 434   :returning (* mysql-mysql-res))
 435
 436 (declaim (inline mysql-list-processes))
 437 (uffi:def-function "mysql_list_processes"
 438   ((mysql (* mysql-mysql)))
 439   :module "mysql"
 440   :returning (* mysql-mysql-res))
 441
 442 (declaim (inline mysql-store-result))
 443 (uffi:def-function "mysql_store_result"
 444   ((mysql (* mysql-mysql)))
 445   :module "mysql"
 446   :returning (* mysql-mysql-res))
 447
 448 (declaim (inline mysql-use-result))
 449 (uffi:def-function "mysql_use_result"
 450   ((mysql (* mysql-mysql)))
 451   :module "mysql"
 452   :returning (* mysql-mysql-res))
 453
 454 (declaim (inline mysql-options))
 455 (uffi:def-function "mysql_options"
 456   ((mysql (* mysql-mysql))
 457    (option mysql-option)
 458    (arg :cstring))
 459   :module "mysql"
 460   :returning :int)
 461
 462 (declaim (inline mysql-free-result))
 463 (uffi:def-function "mysql_free_result"
 464     ((res (* mysql-mysql-res)))
 465   :module "mysql"
 466   :returning :void)
 467
 468 (declaim (inline mysql-row-seek))
 469 (uffi:def-function "mysql_row_seek"
 470   ((res (* mysql-mysql-res))
 471    (offset mysql-row-offset))
 472   :module "mysql"
 473   :returning mysql-row-offset)
 474
 475 (declaim (inline mysql-field-seek))
 476 (uffi:def-function "mysql_field_seek"
 477   ((res (* mysql-mysql-res))
 478   (offset mysql-field-offset))
 479   :module "mysql"
 480   :returning mysql-field-offset)
 481
 482 (declaim (inline mysql-fetch-row))
 483 (uffi:def-function "mysql_fetch_row"
 484     ((res (* mysql-mysql-res)))
 485   :module "mysql"
 486   :returning (* (* :unsigned-char)))
 487
 488 (declaim (inline mysql-fetch-lengths))
 489 (uffi:def-function "mysql_fetch_lengths"
 490   ((res (* mysql-mysql-res)))
 491   :module "mysql"
 492   :returning (* :unsigned-long))
 493
 494 (declaim (inline mysql-fetch-field))
 495 (uffi:def-function "mysql_fetch_field"
 496   ((res (* mysql-mysql-res)))
 497   :module "mysql"
 498   :returning (* mysql-field))
 499
 500 (declaim (inline mysql-fetch-fields))
 501 (uffi:def-function "mysql_fetch_fields"
 502   ((res (* mysql-mysql-res)))
 503   :module "mysql"
 504   :returning (* mysql-field))
 505
 506 (declaim (inline mysql-fetch-field-direct))
 507 (uffi:def-function "mysql_fetch_field_direct"
 508   ((res (* mysql-mysql-res))
 509    (field-num :unsigned-int))
 510   :module "mysql"
 511   :returning (* mysql-field))
 512
 513 (declaim (inline mysql-escape-string))
 514 (uffi:def-function "mysql_escape_string"
 515     ((to (* :unsigned-char))
 516      (from (* :unsigned-char))
 517      (length :unsigned-int))
 518   :module "mysql"
 519   :returning :unsigned-int)
 520
 521 (declaim (inline mysql-debug))
 522 (uffi:def-function "mysql_debug"
 523     ((debug :cstring))
 524   :module "mysql"
 525   :returning :void)
 526
 527 (declaim (inline clsql-mysql-num-rows))
 528 (uffi:def-function "clsql_mysql_num_rows"
 529     ((res (* mysql-mysql-res))
 530      (p-high32 (* :unsigned-int)))
 531   :module "clsql-mysql"
 532   :returning :unsigned-int)
 533
 534 #+(or mysql-client-v4.1 mysql-client-v5)
 535 (uffi:def-foreign-type mysql-stmt-ptr :pointer-void)
 536
 537 #+(or mysql-client-v4.1 mysql-client-v5)
 538 (uffi:def-function "mysql_stmt_init"
 539     ((res (* mysql-mysql-res)))
 540   :module "clsql-mysql"
 541   :returning mysql-stmt-ptr)
 542
 543 #+(or mysql-client-v4.1 mysql-client-v5)
 544 (uffi:def-function "mysql_stmt_prepare"
 545     ((stmt mysql-stmt-ptr)
 546      (query :cstring)
 547      (length :unsigned-long))
 548   :module "clsql-mysql"
 549   :returning :int)
 550
 551 #+(or mysql-client-v4.1 mysql-client-v5)
 552 (uffi:def-function "mysql_stmt_param_count"
 553     ((stmt mysql-stmt-ptr))
 554   :module "clsql-mysql"
 555   :returning :unsigned-int)
 556
 557 #+(or mysql-client-v4.1 mysql-client-v5)
 558 (uffi:def-function "mysql_stmt_bind_param"
 559     ((stmt mysql-stmt-ptr)
 560      (bind (* mysql-bind)))
 561   :module "clsql-mysql"
 562   :returning :short)
 563
 564 #+(or mysql-client-v4.1 mysql-client-v5)
 565 (uffi:def-function "mysql_stmt_bind_result"
 566     ((stmt mysql-stmt-ptr)
 567      (bind (* mysql-bind)))
 568   :module "clsql-mysql"
 569   :returning :short)
 570
 571 #+(or mysql-client-v4.1 mysql-client-v5)
 572 (uffi:def-function "mysql_stmt_result_metadata"
 573     ((stmt mysql-stmt-ptr))
 574   :module "clsql-mysql"
 575   :returning (* mysql-mysql-res))
 576
 577
 578 #+(or mysql-client-v4.1 mysql-client-v5)
 579 (uffi:def-function "mysql_stmt_execute"
 580     ((stmt mysql-stmt-ptr))
 581   :module "clsql-mysql"
 582   :returning :int)
 583
 584 #+(or mysql-client-v4.1 mysql-client-v5)
 585 (uffi:def-function "mysql_stmt_store_result"
 586     ((stmt mysql-stmt-ptr))
 587   :module "clsql-mysql"
 588   :returning :int)
 589
 590 #+(or mysql-client-v4.1 mysql-client-v5)
 591 (uffi:def-function "mysql_stmt_fetch"
 592     ((stmt mysql-stmt-ptr))
 593   :module "clsql-mysql"
 594   :returning :int)
 595
 596 #+(or mysql-client-v4.1 mysql-client-v5)
 597 (uffi:def-function "mysql_stmt_free_result"
 598     ((stmt mysql-stmt-ptr))
 599   :module "clsql-mysql"
 600   :returning :short)
 601
 602 #+(or mysql-client-v4.1 mysql-client-v5)
 603 (uffi:def-function "mysql_stmt_close"
 604     ((stmt mysql-stmt-ptr))
 605   :module "clsql-mysql"
 606   :returning :short)
 607
 608 #+(or mysql-client-v4.1 mysql-client-v5)
 609 (uffi:def-function "mysql_stmt_errno"
 610     ((stmt mysql-stmt-ptr))
 611   :module "clsql-mysql"
 612   :returning :unsigned-int)
 613
 614 #+(or mysql-client-v4.1 mysql-client-v5)
 615 (uffi:def-function "mysql_stmt_error"
 616     ((stmt mysql-stmt-ptr))
 617   :module "clsql-mysql"
 618   :returning :cstring)
 619
 620
 621 ;;;; Equivalents of C Macro definitions for accessing various fields
 622 ;;;; in the internal MySQL Datastructures
 623
 624
 625 (declaim (inline mysql-num-rows))
 626 (defun mysql-num-rows (res)
 627   (uffi:with-foreign-object (p-high32 :unsigned-int)
 628     (let ((low32 (clsql-mysql-num-rows res p-high32))
 629           (high32 (uffi:deref-pointer p-high32 :unsigned-int)))
 630       (if (zerop high32)
 631           low32
 632         (make-64-bit-integer high32 low32)))))
 633
 634 (uffi:def-function "clsql_mysql_affected_rows"
 635     ((mysql (* mysql-mysql))
 636      (p-high32 (* :unsigned-int)))
 637   :returning :unsigned-int
 638   :module "clsql-mysql")
 639
 640 (defun mysql-affected-rows (mysql)
 641   (uffi:with-foreign-object (p-high32 :unsigned-int)
 642     (let ((low32 (clsql-mysql-affected-rows mysql p-high32))
 643           (high32 (uffi:deref-pointer p-high32 :unsigned-int)))
 644       (if (zerop high32)
 645           low32
 646         (make-64-bit-integer high32 low32)))))
 647
 648 (uffi:def-function "clsql_mysql_insert_id"
 649     ((res (* mysql-mysql))
 650      (p-high32 (* :unsigned-int)))
 651   :returning :unsigned-int
 652   :module "clsql-mysql")
 653
 654 (defun mysql-insert-id (mysql)
 655   (uffi:with-foreign-object (p-high32 :unsigned-int)
 656   (let ((low32 (clsql-mysql-insert-id mysql p-high32))
 657         (high32 (uffi:deref-pointer p-high32 :unsigned-int)))
 658     (if (zerop high32)
 659         low32
 660       (make-64-bit-integer high32 low32)))))
 661
 662
 663 (declaim (inline mysql-num-fields))
 664 (uffi:def-function "mysql_num_fields"
 665   ((res (* mysql-mysql-res)))
 666   :returning :unsigned-int
 667   :module "mysql")
 668
 669 (declaim (inline clsql-mysql-eof))
 670 (uffi:def-function ("mysql_eof" clsql-mysql-eof)
 671   ((res (* mysql-mysql-res)))
 672   :returning :char
 673   :module "mysql")
 674
 675 (declaim (inline mysql-eof))
 676 (defun mysql-eof (res)
 677   (if (zerop (clsql-mysql-eof res))
 678       nil
 679     t))
 680
 681 (declaim (inline mysql-error))
 682 (uffi:def-function ("mysql_error" mysql-error)
 683   ((mysql (* mysql-mysql)))
 684   :returning :cstring
 685   :module "mysql")
 686
 687 (declaim (inline mysql-error-string))
 688 (defun mysql-error-string (mysql)
 689   (uffi:convert-from-cstring (mysql-error mysql)))
 690
 691 (declaim (inline mysql-errno))
 692 (uffi:def-function "mysql_errno"
 693   ((mysql (* mysql-mysql)))
 694   :returning :unsigned-int
 695   :module "mysql")
 696
 697 (declaim (inline mysql-info))
 698 (uffi:def-function ("mysql_info" mysql-info)
 699   ((mysql (* mysql-mysql)))
 700   :returning :cstring
 701   :module "mysql")
 702
 703 (declaim (inline mysql-info-string))
 704 (defun mysql-info-string (mysql)
 705   (uffi:convert-from-cstring (mysql-info mysql)))
 706
 707 (declaim (inline clsql-mysql-data-seek))
 708 (uffi:def-function "clsql_mysql_data_seek"
 709   ((res (* mysql-mysql-res))
 710    (offset-high32 :unsigned-int)
 711    (offset-low32 :unsigned-int))
 712   :module "clsql-mysql"
 713   :returning :void)
 714
 715 (defun mysql-data-seek (res offset)
 716   (multiple-value-bind (high32 low32) (split-64-bit-integer offset)
 717     (clsql-mysql-data-seek res high32 low32)))