lib/adodb/adodb-datadict.inc.php

   1 <?php
   2
   3 /**
   4   V4.94 23 Jan 2007  (c) 2000-2007 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                                 if ($flds && in_array(strtoupper(substr($flds[0][1],0,4)),$this->invalidResizeTypes4)) {
 985                                         echo "<h3>$this->alterCol cannot be changed to $flds currently</h3>";
 986                                         continue;
 987                                 }
 988                                 $sql[] = $alter . $this->alterCol . ' ' . $v;
 989                         } else {
 990                                 $sql[] = $alter . $this->addCol . ' ' . $v;
 991                         }
 992                 }
 993
 994                 return $sql;
 995         }
 996 } // class
 997 ?>