libraries/import.lib.php

   1 <?php
   2 /* vim: set expandtab sw=4 ts=4 sts=4: */
   3 /**
   4  * Library that provides common import functions that are used by import plugins
   5  *
   6  * @version $Id$
   7  * @package phpMyAdmin
   8  */
   9 if (! defined('PHPMYADMIN')) {
  10     exit;
  11 }
  12
  13 /**
  14  * We need to know something about user
  15  */
  16 require_once './libraries/check_user_privileges.lib.php';
  17
  18 /**
  19  * We do this check, DROP DATABASE does not need to be confirmed elsewhere
  20  */
  21 define('PMA_CHK_DROP', 1);
  22
  23 /**
  24  *  Check whether timeout is getting close
  25  *
  26  *  @return boolean true if timeout is close
  27  *  @access public
  28  */
  29 function PMA_checkTimeout()
  30 {
  31     global $timestamp, $maximum_time, $timeout_passed;
  32     if ($maximum_time == 0) {
  33         return FALSE;
  34     } elseif ($timeout_passed) {
  35         return TRUE;
  36     /* 5 in next row might be too much */
  37     } elseif ((time() - $timestamp) > ($maximum_time - 5)) {
  38         $timeout_passed = TRUE;
  39         return TRUE;
  40     } else {
  41         return FALSE;
  42     }
  43 }
  44
  45 /**
  46  *  Detects what compression filse uses
  47  *
  48  *  @param  string filename to check
  49  *  @return string MIME type of compression, none for none
  50  *  @access public
  51  */
  52 function PMA_detectCompression($filepath)
  53 {
  54     $file = @fopen($filepath, 'rb');
  55     if (!$file) {
  56         return FALSE;
  57     }
  58     $test = fread($file, 4);
  59     $len = strlen($test);
  60     fclose($file);
  61     if ($len >= 2 && $test[0] == chr(31) && $test[1] == chr(139)) {
  62         return 'application/gzip';
  63     }
  64     if ($len >= 3 && substr($test, 0, 3) == 'BZh') {
  65         return 'application/bzip2';
  66     }
  67     if ($len >= 4 && $test == "PK\003\004") {
  68         return 'application/zip';
  69     }
  70     return 'none';
  71 }
  72
  73 /**
  74  * Runs query inside import buffer. This is needed to allow displaying
  75  * of last SELECT, SHOW or HANDLER results and similar nice stuff.
  76  *
  77  * @uses    $GLOBALS['finished'] read and write
  78  * @param  string query to run
  79  * @param  string query to display, this might be commented
  80  * @param  bool   whether to use control user for queries
  81  * @access public
  82  */
  83 function PMA_importRunQuery($sql = '', $full = '', $controluser = false)
  84 {
  85     global $import_run_buffer, $go_sql, $complete_query, $display_query,
  86         $sql_query, $my_die, $error, $reload,
  87         $last_query_with_results,
  88         $skip_queries, $executed_queries, $max_sql_len, $read_multiply,
  89         $cfg, $sql_query_disabled, $db, $run_query, $is_superuser;
  90     $read_multiply = 1;
  91     if (isset($import_run_buffer)) {
  92         // Should we skip something?
  93         if ($skip_queries > 0) {
  94             $skip_queries--;
  95         } else {
  96             if (!empty($import_run_buffer['sql']) && trim($import_run_buffer['sql']) != '') {
  97                 $max_sql_len = max($max_sql_len, strlen($import_run_buffer['sql']));
  98                 if (!$sql_query_disabled) {
  99                     $sql_query .= $import_run_buffer['full'];
 100                 }
 101                 if (!$cfg['AllowUserDropDatabase']
 102                  && !$is_superuser
 103                  && preg_match('@^[[:space:]]*DROP[[:space:]]+(IF EXISTS[[:space:]]+)?DATABASE @i', $import_run_buffer['sql'])) {
 104                     $GLOBALS['message'] = PMA_Message::error('strNoDropDatabases');
 105                     $error = TRUE;
 106                 } else {
 107                     $executed_queries++;
 108                     if ($run_query && $GLOBALS['finished'] && empty($sql) && !$error && (
 109                             (!empty($import_run_buffer['sql']) && preg_match('/^[\s]*(SELECT|SHOW|HANDLER)/i', $import_run_buffer['sql'])) ||
 110                             ($executed_queries == 1)
 111                             )) {
 112                         $go_sql = TRUE;
 113                         if (!$sql_query_disabled) {
 114                             $complete_query = $sql_query;
 115                             $display_query = $sql_query;
 116                         } else {
 117                             $complete_query = '';
 118                             $display_query = '';
 119                         }
 120                         $sql_query = $import_run_buffer['sql'];
 121                     } elseif ($run_query) {
 122                         if ($controluser) {
 123                             $result = PMA_query_as_controluser($import_run_buffer['sql']);
 124                         } else {
 125                             $result = PMA_DBI_try_query($import_run_buffer['sql']);
 126                         }
 127                         $msg = '# ';
 128                         if ($result === FALSE) { // execution failed
 129                             if (!isset($my_die)) {
 130                                 $my_die = array();
 131                             }
 132                             $my_die[] = array('sql' => $import_run_buffer['full'], 'error' => PMA_DBI_getError());
 133
 134                             if ($cfg['VerboseMultiSubmit']) {
 135                                 $msg .= $GLOBALS['strError'];
 136                             }
 137
 138                             if (!$cfg['IgnoreMultiSubmitErrors']) {
 139                                 $error = TRUE;
 140                                 return;
 141                             }
 142                         } elseif ($cfg['VerboseMultiSubmit']) {
 143                             $a_num_rows = (int)@PMA_DBI_num_rows($result);
 144                             $a_aff_rows = (int)@PMA_DBI_affected_rows();
 145                             if ($a_num_rows > 0) {
 146                                 $msg .= $GLOBALS['strRows'] . ': ' . $a_num_rows;
 147                                 $last_query_with_results = $import_run_buffer['sql'];
 148                             } elseif ($a_aff_rows > 0) {
 149                                 $msg .= sprintf($GLOBALS['strRowsAffected'], $a_aff_rows);
 150                             } else {
 151                                 $msg .= $GLOBALS['strEmptyResultSet'];
 152                             }
 153                         }
 154                         if (!$sql_query_disabled) {
 155                             $sql_query .= $msg . "\n";
 156                         }
 157
 158                         // If a 'USE <db>' SQL-clause was found and the query succeeded, set our current $db to the new one
 159                         if ($result != FALSE && preg_match('@^[\s]*USE[[:space:]]*([\S]+)@i', $import_run_buffer['sql'], $match)) {
 160                             $db = trim($match[1]);
 161                             $db = trim($db,';'); // for example, USE abc;
 162                             $reload = TRUE;
 163                         }
 164
 165                         if ($result != FALSE && preg_match('@^[\s]*(DROP|CREATE)[\s]+(IF EXISTS[[:space:]]+)?(TABLE|DATABASE)[[:space:]]+(.+)@im', $import_run_buffer['sql'])) {
 166                             $reload = TRUE;
 167                         }
 168                     } // end run query
 169                 } // end if not DROP DATABASE
 170             } // end non empty query
 171             elseif (!empty($import_run_buffer['full'])) {
 172                 if ($go_sql) {
 173                     $complete_query .= $import_run_buffer['full'];
 174                     $display_query .= $import_run_buffer['full'];
 175                 } else {
 176                     if (!$sql_query_disabled) {
 177                         $sql_query .= $import_run_buffer['full'];
 178                     }
 179                 }
 180             }
 181             // check length of query unless we decided to pass it to sql.php
 182             // (if $run_query is false, we are just displaying so show
 183             // the complete query in the textarea)
 184             if (! $go_sql && $run_query) {
 185                 if ($cfg['VerboseMultiSubmit'] && ! empty($sql_query)) {
 186                     if (strlen($sql_query) > 50000 || $executed_queries > 50 || $max_sql_len > 1000) {
 187                         $sql_query = '';
 188                         $sql_query_disabled = TRUE;
 189                     }
 190                 } else {
 191                     if (strlen($sql_query) > 10000 || $executed_queries > 10 || $max_sql_len > 500) {
 192                         $sql_query = '';
 193                         $sql_query_disabled = TRUE;
 194                     }
 195                 }
 196             }
 197         } // end do query (no skip)
 198     } // end buffer exists
 199
 200     // Do we have something to push into buffer?
 201     if (!empty($sql) || !empty($full)) {
 202         $import_run_buffer = array('sql' => $sql, 'full' => $full);
 203     } else {
 204         unset($GLOBALS['import_run_buffer']);
 205     }
 206 }
 207
 208
 209 /**
 210  * Returns next part of imported file/buffer
 211  *
 212  * @uses    $GLOBALS['offset'] read and write
 213  * @uses    $GLOBALS['import_file'] read only
 214  * @uses    $GLOBALS['import_text'] read and write
 215  * @uses    $GLOBALS['finished'] read and write
 216  * @uses    $GLOBALS['read_limit'] read only
 217  * @param  integer size of buffer to read (this is maximal size
 218  *                  function will return)
 219  * @return string part of file/buffer
 220  * @access public
 221  */
 222 function PMA_importGetNextChunk($size = 32768)
 223 {
 224     global $compression, $import_handle, $charset_conversion, $charset_of_file,
 225         $charset, $read_multiply;
 226
 227     // Add some progression while reading large amount of data
 228     if ($read_multiply <= 8) {
 229         $size *= $read_multiply;
 230     } else {
 231         $size *= 8;
 232     }
 233     $read_multiply++;
 234
 235     // We can not read too much
 236     if ($size > $GLOBALS['read_limit']) {
 237         $size = $GLOBALS['read_limit'];
 238     }
 239
 240     if (PMA_checkTimeout()) {
 241         return FALSE;
 242     }
 243     if ($GLOBALS['finished']) {
 244         return TRUE;
 245     }
 246
 247     if ($GLOBALS['import_file'] == 'none') {
 248         // Well this is not yet supported and tested, but should return content of textarea
 249         if (strlen($GLOBALS['import_text']) < $size) {
 250             $GLOBALS['finished'] = TRUE;
 251             return $GLOBALS['import_text'];
 252         } else {
 253             $r = substr($GLOBALS['import_text'], 0, $size);
 254             $GLOBALS['offset'] += $size;
 255             $GLOBALS['import_text'] = substr($GLOBALS['import_text'], $size);
 256             return $r;
 257         }
 258     }
 259
 260     switch ($compression) {
 261         case 'application/bzip2':
 262             $result = bzread($import_handle, $size);
 263             $GLOBALS['finished'] = feof($import_handle);
 264             break;
 265         case 'application/gzip':
 266             $result = gzread($import_handle, $size);
 267             $GLOBALS['finished'] = feof($import_handle);
 268             break;
 269         case 'application/zip':
 270             $result = substr($GLOBALS['import_text'], 0, $size);
 271             $GLOBALS['import_text'] = substr($GLOBALS['import_text'], $size);
 272             $GLOBALS['finished'] = empty($GLOBALS['import_text']);
 273             break;
 274         case 'none':
 275             $result = fread($import_handle, $size);
 276             $GLOBALS['finished'] = feof($import_handle);
 277             break;
 278     }
 279     $GLOBALS['offset'] += $size;
 280
 281     if ($charset_conversion) {
 282         return PMA_convert_string($charset_of_file, $charset, $result);
 283     } else {
 284         /**
 285          * Skip possible byte order marks (I do not think we need more
 286          * charsets, but feel free to add more, you can use wikipedia for
 287          * reference: <http://en.wikipedia.org/wiki/Byte_Order_Mark>)
 288          *
 289          * @todo BOM could be used for charset autodetection
 290          */
 291         if ($GLOBALS['offset'] == $size) {
 292             // UTF-8
 293             if (strncmp($result, "\xEF\xBB\xBF", 3) == 0) {
 294                 $result = substr($result, 3);
 295             // UTF-16 BE, LE
 296             } elseif (strncmp($result, "\xFE\xFF", 2) == 0 || strncmp($result, "\xFF\xFE", 2) == 0) {
 297                 $result = substr($result, 2);
 298             }
 299         }
 300         return $result;
 301     }
 302 }
 303
 304 /**
 305  * Returns the "Excel" column name (i.e. 1 = "A", 26 = "Z", 27 = "AA", etc.)
 306  * This algorithm only works up to ZZ. it fails on AAA (up to 701 columns)
 307  *
 308  * @author  Derek Schaefer (derek.schaefer@gmail.com)
 309  *
 310  * @access  public
 311  *
 312  * @uses    chr()
 313  * @param   int $num
 314  * @return  string The column's "Excel" name
 315  */
 316 function PMA_getColumnAlphaName($num)
 317 {
 318     /* ASCII value for capital "A" */
 319     $A = 65;
 320     $sCol = "";
 321     $iRemain = 0;
 322
 323     /* This algorithm only works up to ZZ. it fails on AAA */
 324
 325     if ($num > 701) {
 326         return $num;
 327     } elseif ($num <= 26) {
 328         if ($num == 0) {
 329             $sCol = chr(($A + 26) - 1);
 330         } else {
 331             $sCol = chr(($A + $num) - 1);
 332         }
 333     } else {
 334         $iRemain = (($num / 26)) - 1;
 335         if (($num % 26) == 0) {
 336             $sCol = PMA_getColumnAlphaName($iRemain) . PMA_getColumnAlphaName($num % 26);
 337         } else {
 338             $sCol = chr($A + $iRemain) . PMA_getColumnAlphaName($num % 26);
 339         }
 340     }
 341
 342     return $sCol;
 343 }
 344
 345 /**
 346  * Returns the column number based on the Excel name.
 347  * So "A" = 1, "AZ" = 27, etc.
 348  *
 349  * @author  Derek Schaefer (derek.schaefer@gmail.com)
 350  *
 351  * @access  public
 352  *
 353  * @uses    strtoupper()
 354  * @uses    strlen()
 355  * @uses    count()
 356  * @uses    ord()
 357  * @param   string $name (i.e. "A", or "BC", etc.)
 358  * @return  int The column number
 359  */
 360 function PMA_getColumnNumberFromName($name) {
 361     if (strlen($name) != 0) {
 362         $name = strtoupper($name);
 363         $num_chars = count($name);
 364         $number = 0;
 365         for ($i = 0; $i < $num_chars; ++$i) {
 366             $number += (ord($name[$i]) - 64);
 367         }
 368         return $number;
 369     } else {
 370         return 0;
 371     }
 372 }
 373
 374 /**
 375  * Constants definitions
 376  */
 377
 378 /* MySQL type defs */
 379 define("NONE",      0);
 380 define("VARCHAR",   1);
 381 define("INT",       2);
 382 define("DECIMAL",   3);
 383
 384 /* Decimal size defs */
 385 define("M",         0);
 386 define("D",         1);
 387 define("FULL",      2);
 388
 389 /* Table array defs */
 390 define("TBL_NAME",  0);
 391 define("COL_NAMES", 1);
 392 define("ROWS",      2);
 393
 394 /* Analysis array defs */
 395 define("TYPES",     0);
 396 define("SIZES",     1);
 397
 398 /**
 399  * Obtains the precision (total # of digits) from a size of type decimal
 400  *
 401  * @author  Derek Schaefer (derek.schaefer@gmail.com)
 402  *
 403  * @access  public
 404  *
 405  * @uses    substr()
 406  * @uses    strpos()
 407  * @param   string $last_cumulative_size
 408  * @return  int Precision of the given decimal size notation
 409  */
 410 function PMA_getM($last_cumulative_size) {
 411     return (int)substr($last_cumulative_size, 0, strpos($last_cumulative_size, ","));
 412 }
 413
 414 /**
 415  * Obtains the scale (# of digits to the right of the decimal point) from a size of type decimal
 416  *
 417  * @author  Derek Schaefer (derek.schaefer@gmail.com)
 418  *
 419  * @access  public
 420  *
 421  * @uses    substr()
 422  * @uses    strpos()
 423  * @uses    strlen()
 424  * @param   string $last_cumulative_size
 425  * @return  int Scale of the given decimal size notation
 426  */
 427 function PMA_getD($last_cumulative_size) {
 428         return (int)substr($last_cumulative_size, (strpos($last_cumulative_size, ",") + 1), (strlen($last_cumulative_size) - strpos($last_cumulative_size, ",")));
 429 }
 430
 431 /**
 432  * Obtains the decimal size of a given cell
 433  *
 434  * @author  Derek Schaefer (derek.schaefer@gmail.com)
 435  *
 436  * @access  public
 437  *
 438  * @uses    strlen()
 439  * @uses    strpos()
 440  * @param   string &$cell
 441  * @return  array Contains the precision, scale, and full size representation of the given decimal cell
 442  */
 443 function PMA_getDecimalSize(&$cell) {
 444     $curr_size = strlen((string)$cell);
 445     $decPos = strpos($cell, ".");
 446     $decPrecision = ($curr_size - 1) - $decPos;
 447
 448     $m = $curr_size - 1;
 449     $d = $decPrecision;
 450
 451     return array($m, $d, ($m . "," . $d));
 452 }
 453
 454 /**
 455  * Obtains the size of the given cell
 456  *
 457  * @author  Derek Schaefer (derek.schaefer@gmail.com)
 458  *
 459  * @todo    Handle the error cases more elegantly
 460  *
 461  * @access  public
 462  *
 463  * @uses    M
 464  * @uses    D
 465  * @uses    FULL
 466  * @uses    VARCHAR
 467  * @uses    DECIMAL
 468  * @uses    INT
 469  * @uses    NONE
 470  * @uses    strcmp()
 471  * @uses    strlen()
 472  * @uses    PMA_getM()
 473  * @uses    PMA_getD()
 474  * @uses    PMA_getDecimalSize()
 475  * @param   string $last_cumulative_size    Last cumulative column size
 476  * @param   int    $last_cumulative_type    Last cumulative column type  (NONE or VARCHAR or DECIMAL or INT)
 477  * @param   int    $curr_type               Type of the current cell     (NONE or VARCHAR or DECIMAL or INT)
 478  * @param   string &$cell                   The current cell
 479  * @return  string                          Size of the given cell in the type-appropriate format
 480  */
 481 function PMA_detectSize($last_cumulative_size, $last_cumulative_type, $curr_type, &$cell) {
 482         $curr_size = strlen((string)$cell);
 483
 484     /**
 485      * If the cell is NULL, don't treat it as a varchar
 486      */
 487     if (! strcmp('NULL', $cell)) {
 488         return $last_cumulative_size;
 489     }
 490     /**
 491      * What to do if the current cell is of type VARCHAR
 492      */
 493         elseif ($curr_type == VARCHAR) {
 494         /**
 495          * The last cumlative type was VARCHAR
 496          */
 497                 if ($last_cumulative_type == VARCHAR) {
 498                         if ($curr_size >= $last_cumulative_size) {
 499                                 return $curr_size;
 500             } else {
 501                                 return $last_cumulative_size;
 502             }
 503                 }
 504         /**
 505          * The last cumlative type was DECIMAL
 506          */
 507         elseif ($last_cumulative_type == DECIMAL) {
 508             $oldM = PMA_getM($last_cumulative_size);
 509
 510             if ($curr_size >= $oldM) {
 511                 return $curr_size;
 512             } else {
 513                 return $oldM;
 514             }
 515                 }
 516         /**
 517          * The last cumlative type was INT
 518          */
 519         elseif ($last_cumulative_type == INT) {
 520             if ($curr_size >= $last_cumulative_size) {
 521                 return $curr_size;
 522             } else {
 523                 return $last_cumulative_size;
 524             }
 525                 }
 526         /**
 527          * This is the first row to be analyzed
 528          */
 529         elseif (! isset($last_cumulative_type) || $last_cumulative_type == NONE) {
 530             return $curr_size;
 531         }
 532         /**
 533          * An error has DEFINITELY occurred
 534          */
 535         else {
 536             /**
 537              * TODO: Handle this MUCH more elegantly
 538              */
 539
 540             return -1;
 541         }
 542         }
 543     /**
 544      * What to do if the current cell is of type DECIMAL
 545      */
 546     elseif ($curr_type == DECIMAL) {
 547         /**
 548          * The last cumlative type was VARCHAR
 549          */
 550                 if ($last_cumulative_type == VARCHAR) {
 551             /* Convert $last_cumulative_size from varchar to decimal format */
 552                     $size = PMA_getDecimalSize($cell);
 553
 554                     if ($size[M] >= $last_cumulative_size) {
 555                         return $size[M];
 556             } else {
 557                     return $last_cumulative_size;
 558             }
 559                 }
 560         /**
 561          * The last cumlative type was DECIMAL
 562          */
 563         elseif ($last_cumulative_type == DECIMAL) {
 564                     $size = PMA_getDecimalSize($cell);
 565
 566                     $oldM = PMA_getM($last_cumulative_size);
 567                     $oldD = PMA_getD($last_cumulative_size);
 568
 569                     /* New val if M or D is greater than current largest */
 570                     if ($size[M] > $oldM || $size[D] > $oldD) {
 571                             /* Take the largest of both types */
 572                             return (string)((($size[M] > $oldM) ? $size[M] : $oldM) . "," . (($size[D] > $oldD) ? $size[D] : $oldD));
 573             } else {
 574                             return $last_cumulative_size;
 575             }
 576                 }
 577         /**
 578          * The last cumlative type was INT
 579          */
 580         elseif ($last_cumulative_type == INT) {
 581                     /* Convert $last_cumulative_size from int to decimal format */
 582                     $size = PMA_getDecimalSize($cell);
 583
 584                     if ($size[M] >= $last_cumulative_size) {
 585                         return $size[FULL];
 586             } else {
 587                     return ($last_cumulative_size.",".$size[D]);
 588             }
 589                 }
 590         /**
 591          * This is the first row to be analyzed
 592          */
 593         elseif (! isset($last_cumulative_type) || $last_cumulative_type == NONE) {
 594             /* First row of the column */
 595                     $size = PMA_getDecimalSize($cell);
 596
 597                     return $size[FULL];
 598                 }
 599         /**
 600          * An error has DEFINITELY occurred
 601          */
 602                 else {
 603             /**
 604              * TODO: Handle this MUCH more elegantly
 605              */
 606
 607             return -1;
 608         }
 609         }
 610     /**
 611      * What to do if the current cell is of type INT
 612      */
 613     elseif ($curr_type == INT) {
 614         /**
 615          * The last cumlative type was VARCHAR
 616          */
 617                 if ($last_cumulative_type == VARCHAR) {
 618                     if ($curr_size >= $last_cumulative_size) {
 619                         return $curr_size;
 620             } else {
 621                     return $last_cumulative_size;
 622             }
 623                 }
 624         /**
 625          * The last cumlative type was DECIMAL
 626          */
 627         elseif ($last_cumulative_type == DECIMAL) {
 628             $oldM = PMA_getM($last_cumulative_size);
 629                     $oldD = PMA_getD($last_cumulative_size);
 630                     $oldInt = $oldM - $oldD;
 631                     $newInt = strlen((string)$cell);
 632
 633                     /* See which has the larger integer length */
 634                     if ($oldInt >= $newInt) {
 635                             /* Use old decimal size */
 636                             return $last_cumulative_size;
 637             } else {
 638                             /* Use $newInt + $oldD as new M */
 639                             return (($newInt + $oldD) . "," . $oldD);
 640             }
 641             }
 642         /**
 643          * The last cumlative type was INT
 644          */
 645         elseif ($last_cumulative_type == INT) {
 646                     if ($curr_size >= $last_cumulative_size) {
 647                         return $curr_size;
 648             } else {
 649                     return $last_cumulative_size;
 650             }
 651                 }
 652         /**
 653          * This is the first row to be analyzed
 654          */
 655         elseif (!isset($last_cumulative_type) || $last_cumulative_type == NONE) {
 656             return $curr_size;
 657         }
 658         /**
 659          * An error has DEFINITELY occurred
 660          */
 661                 else {
 662             /**
 663              * TODO: Handle this MUCH more elegantly
 664              */
 665
 666             return -1;
 667         }
 668         }
 669     /**
 670      * An error has DEFINITELY occurred
 671      */
 672         else {
 673         /**
 674          * TODO: Handle this MUCH more elegantly
 675          */
 676
 677         return -1;
 678     }
 679 }
 680
 681 /**
 682  * Determines what MySQL type a cell is
 683  *
 684  * @author  Derek Schaefer (derek.schaefer@gmail.com)
 685  *
 686  * @access  public
 687  *
 688  * @uses    DECIMAL
 689  * @uses    INT
 690  * @uses    VARCHAR
 691  * @uses    NONE
 692  * @uses    is_numeric()
 693  * @uses    strcmp()
 694  * @uses    strpos()
 695  * @uses    substr_count()
 696  * @param   int    $last_cumulative_type  Last cumulative column type  (VARCHAR or INT or DECIMAL or NONE)
 697  * @param   string &$cell                 String representation of the cell for which a best-fit type is to be determined
 698  * @return  int                           The MySQL type representation (VARCHAR or INT or DECIMAL or NONE)
 699  */
 700 function PMA_detectType($last_cumulative_type, &$cell) {
 701     /**
 702      * If numeric, determine if decimal or int
 703      * Else, we call it varchar for simplicity
 704      */
 705
 706     if (! strcmp('NULL', $cell)) {
 707         if ($last_cumulative_type === NULL || $last_cumulative_type == NONE) {
 708             return NONE;
 709         } else {
 710             return $last_cumulative_type;
 711         }
 712     } elseif (is_numeric($cell)) {
 713         if ($cell == (string)(float)$cell && strpos($cell, ".") !== false && substr_count($cell, ".") == 1) {
 714             return DECIMAL;
 715         } else {
 716             return INT;
 717         }
 718     } else {
 719         return VARCHAR;
 720     }
 721 }
 722
 723 /**
 724  * Determines if the column types are int, decimal, or string
 725  *
 726  * @author  Derek Schaefer (derek.schaefer@gmail.com)
 727  *
 728  * @link http://wiki.phpmyadmin.net/pma/Devel:Import
 729  *
 730  * @todo    Handle the error case more elegantly
 731  *
 732  * @access  public
 733  *
 734  * @uses    TBL_NAME
 735  * @uses    COL_NAMES
 736  * @uses    ROWS
 737  * @uses    VARCHAR
 738  * @uses    DECIMAL
 739  * @uses    INT
 740  * @uses    NONE
 741  * @uses    count()
 742  * @uses    is_array()
 743  * @uses    PMA_detectType()
 744  * @uses    PMA_detectSize()
 745  * @param   &$table  array(string $table_name, array $col_names, array $rows)
 746  * @return  array    array(array $types, array $sizes)
 747  */
 748 function PMA_analyzeTable(&$table) {
 749         /* Get number of rows in table */
 750         $numRows = count($table[ROWS]);
 751         /* Get number of columns */
 752         $numCols = count($table[COL_NAMES]);
 753         /* Current type for each column */
 754         $types = array();
 755         $sizes = array();
 756
 757         /* Initialize $sizes to all 0's */
 758         for ($i = 0; $i < $numCols; ++$i) {
 759                 $sizes[$i] = 0;
 760         }
 761
 762     /* Initialize $types to NONE */
 763     for ($i = 0; $i < $numCols; ++$i) {
 764         $types[$i] = NONE;
 765     }
 766
 767         /* Temp vars */
 768         $curr_type = NONE;
 769         $curr_size = 0;
 770
 771         /* If the passed array is not of the correct form, do not process it */
 772         if (is_array($table) && ! is_array($table[TBL_NAME]) && is_array($table[COL_NAMES]) && is_array($table[ROWS])) {
 773                 /* Analyze each column */
 774                 for ($i = 0; $i < $numCols; ++$i) {
 775                         /* Analyze the column in each row */
 776                         for ($j = 0; $j < $numRows; ++$j) {
 777                                 /* Determine type of the current cell */
 778                                 $curr_type = PMA_detectType($types[$i], $table[ROWS][$j][$i]);
 779                                 /* Determine size of the current cell */
 780                                 $sizes[$i] = PMA_detectSize($sizes[$i], $types[$i], $curr_type, $table[ROWS][$j][$i]);
 781
 782                                 /**
 783                  * If a type for this column has alreday been delcared,
 784                                  * only alter it if it was a number and a varchar was found
 785                  */
 786                 if ($curr_type != NONE) {
 787                                         if ($curr_type == VARCHAR) {
 788                                                 $types[$i] = VARCHAR;
 789                                         } else if ($curr_type == DECIMAL) {
 790                                                 if ($types[$i] != VARCHAR) {
 791                                                         $types[$i] = DECIMAL;
 792                                                 }
 793                                         } else if ($curr_type == INT) {
 794                         if ($types[$i] != VARCHAR && $types[$i] != DECIMAL) {
 795                             $types[$i] = INT;
 796                         }
 797                     }
 798                                 }
 799                         }
 800                 }
 801
 802         /* Check to ensure that all types are valid */
 803         $len = count($types);
 804         for ($n = 0; $n < $len; ++$n) {
 805             if (! strcmp(NONE, $types[$n])) {
 806                 $types[$n] = VARCHAR;
 807                 $sizes[$n] = '10';
 808             }
 809         }
 810
 811                 return array($types, $sizes);
 812         }
 813         else
 814         {
 815         /**
 816          * TODO: Handle this better
 817          */
 818
 819                 return false;
 820         }
 821 }
 822
 823 /* Needed to quell the beast that is PMA_Message */
 824 $import_notice = NULL;
 825
 826 /**
 827  * Builds and executes SQL statements to create the database and tables
 828  * as necessary, as well as insert all the data.
 829  *
 830  * @author  Derek Schaefer (derek.schaefer@gmail.com)
 831  *
 832  * @link http://wiki.phpmyadmin.net/pma/Devel:Import
 833  *
 834  * @access  public
 835  *
 836  * @uses    TBL_NAME
 837  * @uses    COL_NAMES
 838  * @uses    ROWS
 839  * @uses    TYPES
 840  * @uses    SIZES
 841  * @uses    strcmp()
 842  * @uses    count()
 843  * @uses    ereg()
 844  * @uses    ereg_replace()
 845  * @uses    PMA_isView()
 846  * @uses    PMA_backquote()
 847  * @uses    PMA_importRunQuery()
 848  * @uses    PMA_generate_common_url()
 849  * @uses    PMA_Message::notice()
 850  * @param   string  $db_name                 Name of the database
 851  * @param   array   &$tables                 Array of tables for the specified database
 852  * @param   array   &$analyses = NULL        Analyses of the tables
 853  * @param   array   &$additional_sql = NULL  Additional SQL statements to be executed
 854  * @param   array   $options = NULL          Associative array of options
 855  * @return  void
 856  */
 857 function PMA_buildSQL($db_name, &$tables, &$analyses = NULL, &$additional_sql = NULL, $options = NULL) {
 858     /* Take care of the options */
 859     if (isset($options['db_collation'])) {
 860         $collation = $options['db_collation'];
 861     } else {
 862         $collation = "utf8_general_ci";
 863     }
 864
 865     if (isset($options['db_charset'])) {
 866         $charset = $options['db_charset'];
 867     } else {
 868         $charset = "utf8";
 869     }
 870
 871     if (isset($options['create_db'])) {
 872         $create_db = $options['create_db'];
 873     } else {
 874         $create_db = true;
 875     }
 876
 877     /* Create SQL code to handle the database */
 878     $sql = array();
 879
 880     if ($create_db) {
 881         $sql[] = "CREATE DATABASE IF NOT EXISTS " . PMA_backquote($db_name) . " DEFAULT CHARACTER SET " . $charset . " COLLATE " . $collation;
 882     }
 883
 884     /**
 885      * The calling plug-in should include this statement, if necessary, in the $additional_sql parameter
 886      *
 887      * $sql[] = "USE " . PMA_backquote($db_name);
 888      */
 889
 890     /* Execute the SQL statements create above */
 891     $sql_len = count($sql);
 892     for ($i = 0; $i < $sql_len; ++$i) {
 893         PMA_importRunQuery($sql[$i], $sql[$i]);
 894     }
 895
 896     /* No longer needed */
 897     unset($sql);
 898
 899     /* Run the $additional_sql statements supplied by the caller plug-in */
 900     if ($additional_sql != NULL) {
 901         /* Clean the SQL first */
 902         $additional_sql_len = count($additional_sql);
 903
 904         /**
 905          * Only match tables for now, because CREATE IF NOT EXISTS
 906          * syntax is lacking or nonexisting for views, triggers,
 907          * functions, and procedures.
 908          *
 909          * See: http://bugs.mysql.com/bug.php?id=15287
 910          *
 911          * To the best of my knowledge this is still an issue.
 912          *
 913          * $pattern = 'CREATE (TABLE|VIEW|TRIGGER|FUNCTION|PROCEDURE)';
 914          */
 915         $pattern = 'CREATE .*(TABLE)';
 916         $replacement = 'CREATE \\1 IF NOT EXISTS';
 917
 918         /* Change CREATE statements to CREATE IF NOT EXISTS to support inserting into existing structures */
 919         for ($i = 0; $i < $additional_sql_len; ++$i) {
 920             $additional_sql[$i] = ereg_replace($pattern, $replacement, $additional_sql[$i]);
 921             /* Execute the resulting statements */
 922             PMA_importRunQuery($additional_sql[$i], $additional_sql[$i]);
 923         }
 924     }
 925
 926     if ($analyses != NULL) {
 927         $type_array = array(NONE => "NULL", VARCHAR => "varchar", INT => "int", DECIMAL => "decimal");
 928
 929         /* TODO: Do more checking here to make sure they really are matched */
 930         if (count($tables) != count($analyses)) {
 931             exit();
 932         }
 933
 934         /* Create SQL code to create the tables */
 935         $tempSQLStr = "";
 936         $num_tables = count($tables);
 937         for ($i = 0; $i < $num_tables; ++$i) {
 938             $num_cols = count($tables[$i][COL_NAMES]);
 939             $tempSQLStr = "CREATE TABLE IF NOT EXISTS " . PMA_backquote($db_name) . '.' . PMA_backquote($tables[$i][TBL_NAME]) . " (";
 940             for ($j = 0; $j < $num_cols; ++$j) {
 941                 $size = $analyses[$i][SIZES][$j];
 942                 if ((int)$size == 0) {
 943                     $size = 10;
 944                 }
 945
 946                 $tempSQLStr .= PMA_backquote($tables[$i][COL_NAMES][$j]) . " " . $type_array[$analyses[$i][TYPES][$j]] . "(" . $size . ")";
 947
 948                 if ($j != (count($tables[$i][COL_NAMES]) - 1)) {
 949                     $tempSQLStr .= ", ";
 950                 }
 951             }
 952             $tempSQLStr .= ") ENGINE=MyISAM DEFAULT CHARACTER SET " . $charset . " COLLATE " . $collation . ";";
 953
 954             /**
 955              * Each SQL statement is executed immediately
 956              * after it is formed so that we don't have
 957              * to store them in a (possibly large) buffer
 958              */
 959             PMA_importRunQuery($tempSQLStr, $tempSQLStr);
 960         }
 961     }
 962
 963     /**
 964      * Create the SQL statements to insert all the data
 965      *
 966      * Only one insert query is formed for each table
 967      */
 968         $tempSQLStr = "";
 969         $col_count = 0;
 970     $num_tables = count($tables);
 971         for ($i = 0; $i < $num_tables; ++$i) {
 972         $num_cols = count($tables[$i][COL_NAMES]);
 973         $num_rows = count($tables[$i][ROWS]);
 974
 975         $tempSQLStr = "INSERT INTO " . PMA_backquote($db_name) . '.' . PMA_backquote($tables[$i][TBL_NAME]) . " (";
 976
 977         for ($m = 0; $m < $num_cols; ++$m) {
 978             $tempSQLStr .= PMA_backquote($tables[$i][COL_NAMES][$m]);
 979
 980             if ($m != ($num_cols - 1)) {
 981                 $tempSQLStr .= ", ";
 982             }
 983         }
 984
 985         $tempSQLStr .= ") VALUES ";
 986
 987                 for ($j = 0; $j < $num_rows; ++$j) {
 988             $tempSQLStr .= "(";
 989
 990                         for ($k = 0; $k < $num_cols; ++$k) {
 991                 if ($analyses != NULL) {
 992                     $is_varchar = ($analyses[$i][TYPES][$col_count] === VARCHAR);
 993                 } else {
 994                     $is_varchar = !is_numeric($tables[$i][ROWS][$j][$k]);
 995                 }
 996
 997                 /* Don't put quotes around NULL fields */
 998                 if (! strcmp($tables[$i][ROWS][$j][$k], 'NULL')) {
 999                     $is_varchar = false;
1000                 }
1001
1002                 $tempSQLStr .= (($is_varchar) ? "'" : "");
1003                                 $tempSQLStr .= PMA_sqlAddslashes((string)$tables[$i][ROWS][$j][$k]);
1004                                 $tempSQLStr .= (($is_varchar) ? "'" : "");
1005
1006                                 if ($k != ($num_cols - 1)) {
1007                                         $tempSQLStr .= ", ";
1008                 }
1009
1010                                 if ($col_count == ($num_cols - 1)) {
1011                                         $col_count = 0;
1012                                 } else {
1013                                         $col_count++;
1014                 }
1015
1016                 /* Delete the cell after we are done with it */
1017                 unset($tables[$i][ROWS][$j][$k]);
1018                         }
1019
1020             $tempSQLStr .= ")";
1021
1022             if ($j != ($num_rows - 1)) {
1023                 $tempSQLStr .= ",\n ";
1024             }
1025
1026                         $col_count = 0;
1027             /* Delete the row after we are done with it */
1028             unset($tables[$i][ROWS][$j]);
1029                 }
1030
1031         $tempSQLStr .= ";";
1032
1033         /**
1034          * Each SQL statement is executed immediately
1035          * after it is formed so that we don't have
1036          * to store them in a (possibly large) buffer
1037          */
1038         PMA_importRunQuery($tempSQLStr, $tempSQLStr);
1039         }
1040
1041     /* No longer needed */
1042     unset($tempSQLStr);
1043
1044     /**
1045      * A work in progress
1046      */
1047
1048     /* Add the viewable structures from $additional_sql to $tables so they are also displayed */
1049
1050     $view_pattern = 'VIEW `[^`]+`\.`([^`]+)';
1051     $table_pattern = 'CREATE TABLE IF NOT EXISTS `([^`]+)`';
1052     /* Check a third pattern to make sure its not a "USE `db_name`;" statement */
1053
1054     $regs = array();
1055
1056     $inTables = false;
1057
1058     $additional_sql_len = count($additional_sql);
1059     for ($i = 0; $i < $additional_sql_len; ++$i) {
1060         ereg($view_pattern, $additional_sql[$i], $regs);
1061
1062         if (count($regs) == 0) {
1063             ereg($table_pattern, $additional_sql[$i], $regs);
1064         }
1065
1066         if (count($regs)) {
1067             for ($n = 0; $n < $num_tables; ++$n) {
1068                 if (!strcmp($regs[1], $tables[$n][TBL_NAME])) {
1069                     $inTables = true;
1070                     break;
1071                 }
1072             }
1073
1074             if (!$inTables) {
1075                 $tables[] = array(TBL_NAME => $regs[1]);
1076             }
1077         }
1078
1079         /* Reset the array */
1080         $regs = array();
1081         $inTables = false;
1082     }
1083
1084     $params = array('db' => (string)$db_name);
1085     $db_url = 'db_structure.php' . PMA_generate_common_url($params);
1086     $db_ops_url = 'db_operations.php' . PMA_generate_common_url($params);
1087
1088     $message = '<br /><br />';
1089     $message .= '<strong>' . $GLOBALS['strImportNoticePt1'] . '</strong><br />';
1090     $message .= '<ul><li>' . $GLOBALS['strImportNoticePt2'] . '</li>';
1091     $message .= '<li>' . $GLOBALS['strImportNoticePt3'] . '</li>';
1092     $message .= '<li>' . $GLOBALS['strImportNoticePt4'] . '</li>';
1093     $message .= sprintf('<br /><li><a href="%s" title="%s">%s</a> (<a href="%s" title="%s">' . $GLOBALS['strOptions'] . '</a>)</li>',
1094                         $db_url,
1095                         $GLOBALS['strGoToDatabase'] . ': ' . PMA_backquote($db_name),
1096                         $db_name,
1097                         $db_ops_url,
1098                         $GLOBALS['strEdit'] . ' ' . PMA_backquote($db_name) . ' ' . $GLOBALS['strSettings']);
1099
1100     $message .= '<ul>';
1101
1102     unset($params);
1103
1104     $num_tables = count($tables);
1105     for ($i = 0; $i < $num_tables; ++$i)
1106     {
1107         $params = array('db' => (string)$db_name, 'table' => (string)$tables[$i][TBL_NAME]);
1108         $tbl_url = 'sql.php' . PMA_generate_common_url($params);
1109         $tbl_struct_url = 'tbl_structure.php' . PMA_generate_common_url($params);
1110         $tbl_ops_url = 'tbl_operations.php' . PMA_generate_common_url($params);
1111
1112         unset($params);
1113
1114         if (! PMA_isView($db_name, $tables[$i][TBL_NAME])) {
1115             $message .= sprintf('<li><a href="%s" title="%s">%s</a> (<a href="%s" title="%s">' . $GLOBALS['strStructure'] . '</a>) (<a href="%s" title="%s">' . $GLOBALS['strOptions'] . '</a>)</li>',
1116                                 $tbl_url,
1117                                 $GLOBALS['strGoToTable'] . ': ' . PMA_backquote($tables[$i][TBL_NAME]),
1118                                 $tables[$i][TBL_NAME],
1119                                 $tbl_struct_url,
1120                                 PMA_backquote($tables[$i][TBL_NAME]) . ' ' . $GLOBALS['strStructureLC'],
1121                                 $tbl_ops_url,
1122                                 $GLOBALS['strEdit'] . ' ' . PMA_backquote($tables[$i][TBL_NAME]) . ' ' . $GLOBALS['strSettings']);
1123         } else {
1124             $message .= sprintf('<li><a href="%s" title="%s">%s</a></li>',
1125                                 $tbl_url,
1126                                 $GLOBALS['strGoToView'] . ': ' . PMA_backquote($tables[$i][TBL_NAME]),
1127                                 $tables[$i][TBL_NAME]);
1128         }
1129     }
1130
1131     $message .= '</ul></ul>';
1132
1133     global $import_notice;
1134     $import_notice = $message;
1135
1136     unset($tables);
1137 }
1138
1139 ?>