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PHP Cross Reference of Moodle 1.9.3 [Build 15-Oct-2008] |
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1 <?php 2 3 /** 4 V4.98 13 Feb 2008 (c) 2000-2008 John Lim (jlim#natsoft.com.my). All rights reserved. 5 Released under both BSD license and Lesser GPL library license. 6 Whenever there is any discrepancy between the two licenses, 7 the BSD license will take precedence. 8 9 Set tabs to 4 for best viewing. 10 11 DOCUMENTATION: 12 13 See adodb/tests/test-datadict.php for docs and examples. 14 */ 15 16 /* 17 Test script for parser 18 */ 19 20 // security - hide paths 21 if (!defined('ADODB_DIR')) die(); 22 23 function Lens_ParseTest() 24 { 25 $str = "`zcol ACOL` NUMBER(32,2) DEFAULT 'The \"cow\" (and Jim''s dog) jumps over the moon' PRIMARY, INTI INT AUTO DEFAULT 0, zcol2\"afs ds"; 26 print "<p>$str</p>"; 27 $a= Lens_ParseArgs($str); 28 print "<pre>"; 29 print_r($a); 30 print "</pre>"; 31 } 32 33 34 if (!function_exists('ctype_alnum')) { 35 function ctype_alnum($text) { 36 return preg_match('/^[a-z0-9]*$/i', $text); 37 } 38 } 39 40 //Lens_ParseTest(); 41 42 /** 43 Parse arguments, treat "text" (text) and 'text' as quotation marks. 44 To escape, use "" or '' or )) 45 46 Will read in "abc def" sans quotes, as: abc def 47 Same with 'abc def'. 48 However if `abc def`, then will read in as `abc def` 49 50 @param endstmtchar Character that indicates end of statement 51 @param tokenchars Include the following characters in tokens apart from A-Z and 0-9 52 @returns 2 dimensional array containing parsed tokens. 53 */ 54 function Lens_ParseArgs($args,$endstmtchar=',',$tokenchars='_.-') 55 { 56 $pos = 0; 57 $intoken = false; 58 $stmtno = 0; 59 $endquote = false; 60 $tokens = array(); 61 $tokens[$stmtno] = array(); 62 $max = strlen($args); 63 $quoted = false; 64 $tokarr = array(); 65 66 while ($pos < $max) { 67 $ch = substr($args,$pos,1); 68 switch($ch) { 69 case ' ': 70 case "\t": 71 case "\n": 72 case "\r": 73 if (!$quoted) { 74 if ($intoken) { 75 $intoken = false; 76 $tokens[$stmtno][] = implode('',$tokarr); 77 } 78 break; 79 } 80 81 $tokarr[] = $ch; 82 break; 83 84 case '`': 85 if ($intoken) $tokarr[] = $ch; 86 case '(': 87 case ')': 88 case '"': 89 case "'": 90 91 if ($intoken) { 92 if (empty($endquote)) { 93 $tokens[$stmtno][] = implode('',$tokarr); 94 if ($ch == '(') $endquote = ')'; 95 else $endquote = $ch; 96 $quoted = true; 97 $intoken = true; 98 $tokarr = array(); 99 } else if ($endquote == $ch) { 100 $ch2 = substr($args,$pos+1,1); 101 if ($ch2 == $endquote) { 102 $pos += 1; 103 $tokarr[] = $ch2; 104 } else { 105 $quoted = false; 106 $intoken = false; 107 $tokens[$stmtno][] = implode('',$tokarr); 108 $endquote = ''; 109 } 110 } else 111 $tokarr[] = $ch; 112 113 }else { 114 115 if ($ch == '(') $endquote = ')'; 116 else $endquote = $ch; 117 $quoted = true; 118 $intoken = true; 119 $tokarr = array(); 120 if ($ch == '`') $tokarr[] = '`'; 121 } 122 break; 123 124 default: 125 126 if (!$intoken) { 127 if ($ch == $endstmtchar) { 128 $stmtno += 1; 129 $tokens[$stmtno] = array(); 130 break; 131 } 132 133 $intoken = true; 134 $quoted = false; 135 $endquote = false; 136 $tokarr = array(); 137 138 } 139 140 if ($quoted) $tokarr[] = $ch; 141 else if (ctype_alnum($ch) || strpos($tokenchars,$ch) !== false) $tokarr[] = $ch; 142 else { 143 if ($ch == $endstmtchar) { 144 $tokens[$stmtno][] = implode('',$tokarr); 145 $stmtno += 1; 146 $tokens[$stmtno] = array(); 147 $intoken = false; 148 $tokarr = array(); 149 break; 150 } 151 $tokens[$stmtno][] = implode('',$tokarr); 152 $tokens[$stmtno][] = $ch; 153 $intoken = false; 154 } 155 } 156 $pos += 1; 157 } 158 if ($intoken) $tokens[$stmtno][] = implode('',$tokarr); 159 160 return $tokens; 161 } 162 163 164 class ADODB_DataDict { 165 var $connection; 166 var $debug = false; 167 var $dropTable = 'DROP TABLE %s'; 168 var $renameTable = 'RENAME TABLE %s TO %s'; 169 var $dropIndex = 'DROP INDEX %s'; 170 var $addCol = ' ADD'; 171 var $alterCol = ' ALTER COLUMN'; 172 var $dropCol = ' DROP COLUMN'; 173 var $renameColumn = 'ALTER TABLE %s RENAME COLUMN %s TO %s'; // table, old-column, new-column, column-definitions (not used by default) 174 var $nameRegex = '\w'; 175 var $nameRegexBrackets = 'a-zA-Z0-9_\(\)'; 176 var $schema = false; 177 var $serverInfo = array(); 178 var $autoIncrement = false; 179 var $dataProvider; 180 var $invalidResizeTypes4 = array('CLOB','BLOB','TEXT','DATE','TIME'); // for changetablesql 181 var $blobSize = 100; /// any varchar/char field this size or greater is treated as a blob 182 /// in other words, we use a text area for editting. 183 184 function GetCommentSQL($table,$col) 185 { 186 return false; 187 } 188 189 function SetCommentSQL($table,$col,$cmt) 190 { 191 return false; 192 } 193 194 function MetaTables() 195 { 196 if (!$this->connection->IsConnected()) return array(); 197 return $this->connection->MetaTables(); 198 } 199 200 function MetaColumns($tab, $upper=true, $schema=false) 201 { 202 if (!$this->connection->IsConnected()) return array(); 203 return $this->connection->MetaColumns($this->TableName($tab), $upper, $schema); 204 } 205 206 function MetaPrimaryKeys($tab,$owner=false,$intkey=false) 207 { 208 if (!$this->connection->IsConnected()) return array(); 209 return $this->connection->MetaPrimaryKeys($this->TableName($tab), $owner, $intkey); 210 } 211 212 function MetaIndexes($table, $primary = false, $owner = false) 213 { 214 if (!$this->connection->IsConnected()) return array(); 215 return $this->connection->MetaIndexes($this->TableName($table), $primary, $owner); 216 } 217 218 219 function MetaType($t,$len=-1,$fieldobj=false) 220 { 221 static $typeMap = array( 222 'VARCHAR' => 'C', 223 'VARCHAR2' => 'C', 224 'CHAR' => 'C', 225 'C' => 'C', 226 'STRING' => 'C', 227 'NCHAR' => 'C', 228 'NVARCHAR' => 'C', 229 'VARYING' => 'C', 230 'BPCHAR' => 'C', 231 'CHARACTER' => 'C', 232 'INTERVAL' => 'C', # Postgres 233 'MACADDR' => 'C', # postgres 234 ## 235 'LONGCHAR' => 'X', 236 'TEXT' => 'X', 237 'NTEXT' => 'X', 238 'M' => 'X', 239 'X' => 'X', 240 'CLOB' => 'X', 241 'NCLOB' => 'X', 242 'LVARCHAR' => 'X', 243 ## 244 'BLOB' => 'B', 245 'IMAGE' => 'B', 246 'BINARY' => 'B', 247 'VARBINARY' => 'B', 248 'LONGBINARY' => 'B', 249 'B' => 'B', 250 ## 251 'YEAR' => 'D', // mysql 252 'DATE' => 'D', 253 'D' => 'D', 254 ## 255 'UNIQUEIDENTIFIER' => 'C', # MS SQL Server 256 ## 257 'TIME' => 'T', 258 'TIMESTAMP' => 'T', 259 'DATETIME' => 'T', 260 'TIMESTAMPTZ' => 'T', 261 'T' => 'T', 262 'TIMESTAMP WITHOUT TIME ZONE' => 'T', // postgresql 263 ## 264 'BOOL' => 'L', 265 'BOOLEAN' => 'L', 266 'BIT' => 'L', 267 'L' => 'L', 268 ## 269 'COUNTER' => 'R', 270 'R' => 'R', 271 'SERIAL' => 'R', // ifx 272 'INT IDENTITY' => 'R', 273 ## 274 'INT' => 'I', 275 'INT2' => 'I', 276 'INT4' => 'I', 277 'INT8' => 'I', 278 'INTEGER' => 'I', 279 'INTEGER UNSIGNED' => 'I', 280 'SHORT' => 'I', 281 'TINYINT' => 'I', 282 'SMALLINT' => 'I', 283 'I' => 'I', 284 ## 285 'LONG' => 'N', // interbase is numeric, oci8 is blob 286 'BIGINT' => 'N', // this is bigger than PHP 32-bit integers 287 'DECIMAL' => 'N', 288 'DEC' => 'N', 289 'REAL' => 'N', 290 'DOUBLE' => 'N', 291 'DOUBLE PRECISION' => 'N', 292 'SMALLFLOAT' => 'N', 293 'FLOAT' => 'N', 294 'NUMBER' => 'N', 295 'NUM' => 'N', 296 'NUMERIC' => 'N', 297 'MONEY' => 'N', 298 299 ## informix 9.2 300 'SQLINT' => 'I', 301 'SQLSERIAL' => 'I', 302 'SQLSMINT' => 'I', 303 'SQLSMFLOAT' => 'N', 304 'SQLFLOAT' => 'N', 305 'SQLMONEY' => 'N', 306 'SQLDECIMAL' => 'N', 307 'SQLDATE' => 'D', 308 'SQLVCHAR' => 'C', 309 'SQLCHAR' => 'C', 310 'SQLDTIME' => 'T', 311 'SQLINTERVAL' => 'N', 312 'SQLBYTES' => 'B', 313 'SQLTEXT' => 'X', 314 ## informix 10 315 "SQLINT8" => 'I8', 316 "SQLSERIAL8" => 'I8', 317 "SQLNCHAR" => 'C', 318 "SQLNVCHAR" => 'C', 319 "SQLLVARCHAR" => 'X', 320 "SQLBOOL" => 'L' 321 ); 322 323 if (!$this->connection->IsConnected()) { 324 $t = strtoupper($t); 325 if (isset($typeMap[$t])) return $typeMap[$t]; 326 return 'N'; 327 } 328 return $this->connection->MetaType($t,$len,$fieldobj); 329 } 330 331 function NameQuote($name = NULL,$allowBrackets=false) 332 { 333 if (!is_string($name)) { 334 return FALSE; 335 } 336 337 $name = trim($name); 338 339 if ( !is_object($this->connection) ) { 340 return $name; 341 } 342 343 $quote = $this->connection->nameQuote; 344 345 // if name is of the form `name`, quote it 346 if ( preg_match('/^`(.+)`$/', $name, $matches) ) { 347 return $quote . $matches[1] . $quote; 348 } 349 350 // if name contains special characters, quote it 351 $regex = ($allowBrackets) ? $this->nameRegexBrackets : $this->nameRegex; 352 353 if ( !preg_match('/^[' . $regex . ']+$/', $name) ) { 354 return $quote . $name . $quote; 355 } 356 357 return $name; 358 } 359 360 function TableName($name) 361 { 362 if ( $this->schema ) { 363 return $this->NameQuote($this->schema) .'.'. $this->NameQuote($name); 364 } 365 return $this->NameQuote($name); 366 } 367 368 // Executes the sql array returned by GetTableSQL and GetIndexSQL 369 function ExecuteSQLArray($sql, $continueOnError = true) 370 { 371 $rez = 2; 372 $conn = &$this->connection; 373 $saved = $conn->debug; 374 foreach($sql as $line) { 375 376 if ($this->debug) $conn->debug = true; 377 $ok = $conn->Execute($line); 378 $conn->debug = $saved; 379 if (!$ok) { 380 if ($this->debug) ADOConnection::outp($conn->ErrorMsg()); 381 if (!$continueOnError) return 0; 382 $rez = 1; 383 } 384 } 385 return $rez; 386 } 387 388 /** 389 Returns the actual type given a character code. 390 391 C: varchar 392 X: CLOB (character large object) or largest varchar size if CLOB is not supported 393 C2: Multibyte varchar 394 X2: Multibyte CLOB 395 396 B: BLOB (binary large object) 397 398 D: Date 399 T: Date-time 400 L: Integer field suitable for storing booleans (0 or 1) 401 I: Integer 402 F: Floating point number 403 N: Numeric or decimal number 404 */ 405 406 function ActualType($meta) 407 { 408 return $meta; 409 } 410 411 function CreateDatabase($dbname,$options=false) 412 { 413 $options = $this->_Options($options); 414 $sql = array(); 415 416 $s = 'CREATE DATABASE ' . $this->NameQuote($dbname); 417 if (isset($options[$this->upperName])) 418 $s .= ' '.$options[$this->upperName]; 419 420 $sql[] = $s; 421 return $sql; 422 } 423 424 /* 425 Generates the SQL to create index. Returns an array of sql strings. 426 */ 427 function CreateIndexSQL($idxname, $tabname, $flds, $idxoptions = false) 428 { 429 if (!is_array($flds)) { 430 $flds = explode(',',$flds); 431 } 432 433 foreach($flds as $key => $fld) { 434 # some indexes can use partial fields, eg. index first 32 chars of "name" with NAME(32) 435 $flds[$key] = $this->NameQuote($fld,$allowBrackets=true); 436 } 437 438 return $this->_IndexSQL($this->NameQuote($idxname), $this->TableName($tabname), $flds, $this->_Options($idxoptions)); 439 } 440 441 function DropIndexSQL ($idxname, $tabname = NULL) 442 { 443 return array(sprintf($this->dropIndex, $this->NameQuote($idxname), $this->TableName($tabname))); 444 } 445 446 function SetSchema($schema) 447 { 448 $this->schema = $schema; 449 } 450 451 function AddColumnSQL($tabname, $flds) 452 { 453 $tabname = $this->TableName ($tabname); 454 $sql = array(); 455 list($lines,$pkey,$idxs) = $this->_GenFields($flds); 456 // genfields can return FALSE at times 457 if ($lines == null) $lines = array(); 458 $alter = 'ALTER TABLE ' . $tabname . $this->addCol . ' '; 459 foreach($lines as $v) { 460 $sql[] = $alter . $v; 461 } 462 if (is_array($idxs)) { 463 foreach($idxs as $idx => $idxdef) { 464 $sql_idxs = $this->CreateIndexSql($idx, $tabname, $idxdef['cols'], $idxdef['opts']); 465 $sql = array_merge($sql, $sql_idxs); 466 } 467 } 468 return $sql; 469 } 470 471 /** 472 * Change the definition of one column 473 * 474 * As some DBM's can't do that on there own, you need to supply the complete defintion of the new table, 475 * to allow, recreating the table and copying the content over to the new table 476 * @param string $tabname table-name 477 * @param string $flds column-name and type for the changed column 478 * @param string $tableflds='' complete defintion of the new table, eg. for postgres, default '' 479 * @param array/string $tableoptions='' options for the new table see CreateTableSQL, default '' 480 * @return array with SQL strings 481 */ 482 function AlterColumnSQL($tabname, $flds, $tableflds='',$tableoptions='') 483 { 484 $tabname = $this->TableName ($tabname); 485 $sql = array(); 486 list($lines,$pkey,$idxs) = $this->_GenFields($flds); 487 // genfields can return FALSE at times 488 if ($lines == null) $lines = array(); 489 $alter = 'ALTER TABLE ' . $tabname . $this->alterCol . ' '; 490 foreach($lines as $v) { 491 $sql[] = $alter . $v; 492 } 493 if (is_array($idxs)) { 494 foreach($idxs as $idx => $idxdef) { 495 $sql_idxs = $this->CreateIndexSql($idx, $tabname, $idxdef['cols'], $idxdef['opts']); 496 $sql = array_merge($sql, $sql_idxs); 497 } 498 499 } 500 return $sql; 501 } 502 503 /** 504 * Rename one column 505 * 506 * Some DBM's can only do this together with changeing the type of the column (even if that stays the same, eg. mysql) 507 * @param string $tabname table-name 508 * @param string $oldcolumn column-name to be renamed 509 * @param string $newcolumn new column-name 510 * @param string $flds='' complete column-defintion-string like for AddColumnSQL, only used by mysql atm., default='' 511 * @return array with SQL strings 512 */ 513 function RenameColumnSQL($tabname,$oldcolumn,$newcolumn,$flds='') 514 { 515 $tabname = $this->TableName ($tabname); 516 if ($flds) { 517 list($lines,$pkey,$idxs) = $this->_GenFields($flds); 518 // genfields can return FALSE at times 519 if ($lines == null) $lines = array(); 520 list(,$first) = each($lines); 521 list(,$column_def) = split("[\t ]+",$first,2); 522 } 523 return array(sprintf($this->renameColumn,$tabname,$this->NameQuote($oldcolumn),$this->NameQuote($newcolumn),$column_def)); 524 } 525 526 /** 527 * Drop one column 528 * 529 * Some DBM's can't do that on there own, you need to supply the complete defintion of the new table, 530 * to allow, recreating the table and copying the content over to the new table 531 * @param string $tabname table-name 532 * @param string $flds column-name and type for the changed column 533 * @param string $tableflds='' complete defintion of the new table, eg. for postgres, default '' 534 * @param array/string $tableoptions='' options for the new table see CreateTableSQL, default '' 535 * @return array with SQL strings 536 */ 537 function DropColumnSQL($tabname, $flds, $tableflds='',$tableoptions='') 538 { 539 $tabname = $this->TableName ($tabname); 540 if (!is_array($flds)) $flds = explode(',',$flds); 541 $sql = array(); 542 $alter = 'ALTER TABLE ' . $tabname . $this->dropCol . ' '; 543 foreach($flds as $v) { 544 $sql[] = $alter . $this->NameQuote($v); 545 } 546 return $sql; 547 } 548 549 function DropTableSQL($tabname) 550 { 551 return array (sprintf($this->dropTable, $this->TableName($tabname))); 552 } 553 554 function RenameTableSQL($tabname,$newname) 555 { 556 return array (sprintf($this->renameTable, $this->TableName($tabname),$this->TableName($newname))); 557 } 558 559 /** 560 Generate the SQL to create table. Returns an array of sql strings. 561 */ 562 function CreateTableSQL($tabname, $flds, $tableoptions=array()) 563 { 564 list($lines,$pkey,$idxs) = $this->_GenFields($flds, true); 565 // genfields can return FALSE at times 566 if ($lines == null) $lines = array(); 567 568 $taboptions = $this->_Options($tableoptions); 569 $tabname = $this->TableName ($tabname); 570 $sql = $this->_TableSQL($tabname,$lines,$pkey,$taboptions); 571 572 // ggiunta - 2006/10/12 - KLUDGE: 573 // if we are on autoincrement, and table options includes REPLACE, the 574 // autoincrement sequence has already been dropped on table creation sql, so 575 // we avoid passing REPLACE to trigger creation code. This prevents 576 // creating sql that double-drops the sequence 577 if ($this->autoIncrement && isset($taboptions['REPLACE'])) 578 unset($taboptions['REPLACE']); 579 $tsql = $this->_Triggers($tabname,$taboptions); 580 foreach($tsql as $s) $sql[] = $s; 581 582 if (is_array($idxs)) { 583 foreach($idxs as $idx => $idxdef) { 584 $sql_idxs = $this->CreateIndexSql($idx, $tabname, $idxdef['cols'], $idxdef['opts']); 585 $sql = array_merge($sql, $sql_idxs); 586 } 587 } 588 589 return $sql; 590 } 591 592 function _GenFields($flds,$widespacing=false) 593 { 594 if (is_string($flds)) { 595 $padding = ' '; 596 $txt = $flds.$padding; 597 $flds = array(); 598 $flds0 = Lens_ParseArgs($txt,','); 599 $hasparam = false; 600 foreach($flds0 as $f0) { 601 $f1 = array(); 602 foreach($f0 as $token) { 603 switch (strtoupper($token)) { 604 case 'INDEX': 605 $f1['INDEX'] = ''; 606 // fall through intentionally 607 case 'CONSTRAINT': 608 case 'DEFAULT': 609 $hasparam = $token; 610 break; 611 default: 612 if ($hasparam) $f1[$hasparam] = $token; 613 else $f1[] = $token; 614 $hasparam = false; 615 break; 616 } 617 } 618 // 'index' token without a name means single column index: name it after column 619 if (array_key_exists('INDEX', $f1) && $f1['INDEX'] == '') { 620 $f1['INDEX'] = isset($f0['NAME']) ? $f0['NAME'] : $f0[0]; 621 // check if column name used to create an index name was quoted 622 if (($f1['INDEX'][0] == '"' || $f1['INDEX'][0] == "'" || $f1['INDEX'][0] == "`") && 623 ($f1['INDEX'][0] == substr($f1['INDEX'], -1))) { 624 $f1['INDEX'] = $f1['INDEX'][0].'idx_'.substr($f1['INDEX'], 1, -1).$f1['INDEX'][0]; 625 } 626 else 627 $f1['INDEX'] = 'idx_'.$f1['INDEX']; 628 } 629 // reset it, so we don't get next field 1st token as INDEX... 630 $hasparam = false; 631 632 $flds[] = $f1; 633 634 } 635 } 636 $this->autoIncrement = false; 637 $lines = array(); 638 $pkey = array(); 639 $idxs = array(); 640 foreach($flds as $fld) { 641 $fld = _array_change_key_case($fld); 642 643 $fname = false; 644 $fdefault = false; 645 $fautoinc = false; 646 $ftype = false; 647 $fsize = false; 648 $fprec = false; 649 $fprimary = false; 650 $fnoquote = false; 651 $fdefts = false; 652 $fdefdate = false; 653 $fconstraint = false; 654 $fnotnull = false; 655 $funsigned = false; 656 $findex = ''; 657 $funiqueindex = false; 658 659 //----------------- 660 // Parse attributes 661 foreach($fld as $attr => $v) { 662 if ($attr == 2 && is_numeric($v)) $attr = 'SIZE'; 663 else if (is_numeric($attr) && $attr > 1 && !is_numeric($v)) $attr = strtoupper($v); 664 665 switch($attr) { 666 case '0': 667 case 'NAME': $fname = $v; break; 668 case '1': 669 case 'TYPE': $ty = $v; $ftype = $this->ActualType(strtoupper($v)); break; 670 671 case 'SIZE': 672 $dotat = strpos($v,'.'); if ($dotat === false) $dotat = strpos($v,','); 673 if ($dotat === false) $fsize = $v; 674 else { 675 $fsize = substr($v,0,$dotat); 676 $fprec = substr($v,$dotat+1); 677 } 678 break; 679 case 'UNSIGNED': $funsigned = true; break; 680 case 'AUTOINCREMENT': 681 case 'AUTO': $fautoinc = true; $fnotnull = true; break; 682 case 'KEY': 683 // a primary key col can be non unique in itself (if key spans many cols...) 684 case 'PRIMARY': $fprimary = $v; $fnotnull = true; /*$funiqueindex = true;*/ break; 685 case 'DEF': 686 case 'DEFAULT': $fdefault = $v; break; 687 case 'NOTNULL': $fnotnull = $v; break; 688 case 'NOQUOTE': $fnoquote = $v; break; 689 case 'DEFDATE': $fdefdate = $v; break; 690 case 'DEFTIMESTAMP': $fdefts = $v; break; 691 case 'CONSTRAINT': $fconstraint = $v; break; 692 // let INDEX keyword create a 'very standard' index on column 693 case 'INDEX': $findex = $v; break; 694 case 'UNIQUE': $funiqueindex = true; break; 695 } //switch 696 } // foreach $fld 697 698 //-------------------- 699 // VALIDATE FIELD INFO 700 if (!strlen($fname)) { 701 if ($this->debug) ADOConnection::outp("Undefined NAME"); 702 return false; 703 } 704 705 $fid = strtoupper(preg_replace('/^`(.+)`$/', '$1', $fname)); 706 $fname = $this->NameQuote($fname); 707 708 if (!strlen($ftype)) { 709 if ($this->debug) ADOConnection::outp("Undefined TYPE for field '$fname'"); 710 return false; 711 } else { 712 $ftype = strtoupper($ftype); 713 } 714 715 $ftype = $this->_GetSize($ftype, $ty, $fsize, $fprec); 716 717 if ($ty == 'X' || $ty == 'X2' || $ty == 'B') $fnotnull = false; // some blob types do not accept nulls 718 719 if ($fprimary) $pkey[] = $fname; 720 721 // some databases do not allow blobs to have defaults 722 if ($ty == 'X') $fdefault = false; 723 724 // build list of indexes 725 if ($findex != '') { 726 if (array_key_exists($findex, $idxs)) { 727 $idxs[$findex]['cols'][] = ($fname); 728 if (in_array('UNIQUE', $idxs[$findex]['opts']) != $funiqueindex) { 729 if ($this->debug) ADOConnection::outp("Index $findex defined once UNIQUE and once not"); 730 } 731 if ($funiqueindex && !in_array('UNIQUE', $idxs[$findex]['opts'])) 732 $idxs[$findex]['opts'][] = 'UNIQUE'; 733 } 734 else 735 { 736 $idxs[$findex] = array(); 737 $idxs[$findex]['cols'] = array($fname); 738 if ($funiqueindex) 739 $idxs[$findex]['opts'] = array('UNIQUE'); 740 else 741 $idxs[$findex]['opts'] = array(); 742 } 743 } 744 745 //-------------------- 746 // CONSTRUCT FIELD SQL 747 if ($fdefts) { 748 if (substr($this->connection->databaseType,0,5) == 'mysql') { 749 $ftype = 'TIMESTAMP'; 750 } else { 751 $fdefault = $this->connection->sysTimeStamp; 752 } 753 } else if ($fdefdate) { 754 if (substr($this->connection->databaseType,0,5) == 'mysql') { 755 $ftype = 'TIMESTAMP'; 756 } else { 757 $fdefault = $this->connection->sysDate; 758 } 759 } else if ($fdefault !== false && !$fnoquote) { 760 if ($ty == 'C' or $ty == 'X' or 761 ( substr($fdefault,0,1) != "'" && !is_numeric($fdefault))) { 762 763 if (($ty == 'D' || $ty == 'T') && strtolower($fdefault) != 'null') { 764 // convert default date into database-aware code 765 if ($ty == 'T') 766 { 767 $fdefault = $this->connection->DBTimeStamp($fdefault); 768 } 769 else 770 { 771 $fdefault = $this->connection->DBDate($fdefault); 772 } 773 } 774 else 775 if (strlen($fdefault) != 1 && substr($fdefault,0,1) == ' ' && substr($fdefault,strlen($fdefault)-1) == ' ') 776 $fdefault = trim($fdefault); 777 else if (strtolower($fdefault) != 'null') 778 $fdefault = $this->connection->qstr($fdefault); 779 } 780 } 781 $suffix = $this->_CreateSuffix($fname,$ftype,$fnotnull,$fdefault,$fautoinc,$fconstraint,$funsigned); 782 783 // add index creation 784 if ($widespacing) $fname = str_pad($fname,24); 785 786 // check for field names appearing twice 787 if (array_key_exists($fid, $lines)) { 788 ADOConnection::outp("Field '$fname' defined twice"); 789 } 790 791 $lines[$fid] = $fname.' '.$ftype.$suffix; 792 793 if ($fautoinc) $this->autoIncrement = true; 794 } // foreach $flds 795 796 return array($lines,$pkey,$idxs); 797 } 798 799 /** 800 GENERATE THE SIZE PART OF THE DATATYPE 801 $ftype is the actual type 802 $ty is the type defined originally in the DDL 803 */ 804 function _GetSize($ftype, $ty, $fsize, $fprec) 805 { 806 if (strlen($fsize) && $ty != 'X' && $ty != 'B' && strpos($ftype,'(') === false) { 807 $ftype .= "(".$fsize; 808 if (strlen($fprec)) $ftype .= ",".$fprec; 809 $ftype .= ')'; 810 } 811 return $ftype; 812 } 813 814 815 // return string must begin with space 816 function _CreateSuffix($fname,$ftype,$fnotnull,$fdefault,$fautoinc,$fconstraint) 817 { 818 $suffix = ''; 819 if (strlen($fdefault)) $suffix .= " DEFAULT $fdefault"; 820 if ($fnotnull) $suffix .= ' NOT NULL'; 821 if ($fconstraint) $suffix .= ' '.$fconstraint; 822 return $suffix; 823 } 824 825 function _IndexSQL($idxname, $tabname, $flds, $idxoptions) 826 { 827 $sql = array(); 828 829 if ( isset($idxoptions['REPLACE']) || isset($idxoptions['DROP']) ) { 830 $sql[] = sprintf ($this->dropIndex, $idxname); 831 if ( isset($idxoptions['DROP']) ) 832 return $sql; 833 } 834 835 if ( empty ($flds) ) { 836 return $sql; 837 } 838 839 $unique = isset($idxoptions['UNIQUE']) ? ' UNIQUE' : ''; 840 841 $s = 'CREATE' . $unique . ' INDEX ' . $idxname . ' ON ' . $tabname . ' '; 842 843 if ( isset($idxoptions[$this->upperName]) ) 844 $s .= $idxoptions[$this->upperName]; 845 846 if ( is_array($flds) ) 847 $flds = implode(', ',$flds); 848 $s .= '(' . $flds . ')'; 849 $sql[] = $s; 850 851 return $sql; 852 } 853 854 function _DropAutoIncrement($tabname) 855 { 856 return false; 857 } 858 859 function _TableSQL($tabname,$lines,$pkey,$tableoptions) 860 { 861 $sql = array(); 862 863 if (isset($tableoptions['REPLACE']) || isset ($tableoptions['DROP'])) { 864 $sql[] = sprintf($this->dropTable,$tabname); 865 if ($this->autoIncrement) { 866 $sInc = $this->_DropAutoIncrement($tabname); 867 if ($sInc) $sql[] = $sInc; 868 } 869 if ( isset ($tableoptions['DROP']) ) { 870 return $sql; 871 } 872 } 873 $s = "CREATE TABLE $tabname (\n"; 874 $s .= implode(",\n", $lines); 875 if (sizeof($pkey)>0) { 876 $s .= ",\n PRIMARY KEY ("; 877 $s .= implode(", ",$pkey).")"; 878 } 879 if (isset($tableoptions['CONSTRAINTS'])) 880 $s .= "\n".$tableoptions['CONSTRAINTS']; 881 882 if (isset($tableoptions[$this->upperName.'_CONSTRAINTS'])) 883 $s .= "\n".$tableoptions[$this->upperName.'_CONSTRAINTS']; 884 885 $s .= "\n)"; 886 if (isset($tableoptions[$this->upperName])) $s .= $tableoptions[$this->upperName]; 887 $sql[] = $s; 888 889 return $sql; 890 } 891 892 /** 893 GENERATE TRIGGERS IF NEEDED 894 used when table has auto-incrementing field that is emulated using triggers 895 */ 896 function _Triggers($tabname,$taboptions) 897 { 898 return array(); 899 } 900 901 /** 902 Sanitize options, so that array elements with no keys are promoted to keys 903 */ 904 function _Options($opts) 905 { 906 if (!is_array($opts)) return array(); 907 $newopts = array(); 908 foreach($opts as $k => $v) { 909 if (is_numeric($k)) $newopts[strtoupper($v)] = $v; 910 else $newopts[strtoupper($k)] = $v; 911 } 912 return $newopts; 913 } 914 915 /** 916 "Florian Buzin [ easywe ]" <florian.buzin#easywe.de> 917 918 This function changes/adds new fields to your table. You don't 919 have to know if the col is new or not. It will check on its own. 920 */ 921 function ChangeTableSQL($tablename, $flds, $tableoptions = false) 922 { 923 global $ADODB_FETCH_MODE; 924 925 $save = $ADODB_FETCH_MODE; 926 $ADODB_FETCH_MODE = ADODB_FETCH_ASSOC; 927 if ($this->connection->fetchMode !== false) $savem = $this->connection->SetFetchMode(false); 928 929 // check table exists 930 $save_handler = $this->connection->raiseErrorFn; 931 $this->connection->raiseErrorFn = ''; 932 $cols = $this->MetaColumns($tablename); 933 $this->connection->raiseErrorFn = $save_handler; 934 935 if (isset($savem)) $this->connection->SetFetchMode($savem); 936 $ADODB_FETCH_MODE = $save; 937 938 if ( empty($cols)) { 939 return $this->CreateTableSQL($tablename, $flds, $tableoptions); 940 } 941 942 if (is_array($flds)) { 943 // Cycle through the update fields, comparing 944 // existing fields to fields to update. 945 // if the Metatype and size is exactly the 946 // same, ignore - by Mark Newham 947 $holdflds = array(); 948 foreach($flds as $k=>$v) { 949 if ( isset($cols[$k]) && is_object($cols[$k]) ) { 950 // If already not allowing nulls, then don't change 951 $obj = $cols[$k]; 952 if (isset($obj->not_null) && $obj->not_null) 953 $v = str_replace('NOT NULL','',$v); 954 955 $c = $cols[$k]; 956 $ml = $c->max_length; 957 $mt = $this->MetaType($c->type,$ml); 958 if ($ml == -1) $ml = ''; 959 if ($mt == 'X') $ml = $v['SIZE']; 960 if (($mt != $v['TYPE']) || $ml != $v['SIZE']) { 961 $holdflds[$k] = $v; 962 } 963 } else { 964 $holdflds[$k] = $v; 965 } 966 } 967 $flds = $holdflds; 968 } 969 970 971 // already exists, alter table instead 972 list($lines,$pkey,$idxs) = $this->_GenFields($flds); 973 // genfields can return FALSE at times 974 if ($lines == null) $lines = array(); 975 $alter = 'ALTER TABLE ' . $this->TableName($tablename); 976 $sql = array(); 977 978 foreach ( $lines as $id => $v ) { 979 if ( isset($cols[$id]) && is_object($cols[$id]) ) { 980 981 $flds = Lens_ParseArgs($v,','); 982 983 // We are trying to change the size of the field, if not allowed, simply ignore the request. 984 // $flds[1] holds the type, $flds[2] holds the size -postnuke addition 985 if ($flds && in_array(strtoupper(substr($flds[0][1],0,4)),$this->invalidResizeTypes4) 986 && (isset($flds[0][2]) && is_numeric($flds[0][2]))) { 987 if ($this->debug) ADOConnection::outp(sprintf("<h3>%s cannot be changed to %s currently</h3>", $flds[0][0], $flds[0][1])); 988 #echo "<h3>$this->alterCol cannot be changed to $flds currently</h3>"; 989 continue; 990 } 991 $sql[] = $alter . $this->alterCol . ' ' . $v; 992 } else { 993 $sql[] = $alter . $this->addCol . ' ' . $v; 994 } 995 } 996 997 return $sql; 998 } 999 } // class 1000 ?>
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| Generated: Wed Jan 14 11:33:29 2009 | Cross-referenced by PHPXref 0.7 |