query
6 months ago
tables
6 months ago
database.php
6 months ago
helper.php
6 months ago
query.php
6 months ago
table.php
6 months ago
helper.php
140 lines
| 1 | <?php |
| 2 | /** |
| 3 | * @package VikWP - Libraries |
| 4 | * @subpackage adapter.database |
| 5 | * @author E4J s.r.l. |
| 6 | * @copyright Copyright (C) 2023 E4J s.r.l. All Rights Reserved. |
| 7 | * @license http://www.gnu.org/licenses/gpl-2.0.html GNU/GPL |
| 8 | * @link https://vikwp.com |
| 9 | */ |
| 10 | |
| 11 | // No direct access |
| 12 | defined('ABSPATH') or die('No script kiddies please!'); |
| 13 | |
| 14 | /** |
| 15 | * Helper class to run some useful functions for the database framework. |
| 16 | * |
| 17 | * @since 10.0 |
| 18 | */ |
| 19 | abstract class JDatabaseHelper |
| 20 | { |
| 21 | /** |
| 22 | * Splits the given SQL statement in single queries. |
| 23 | * |
| 24 | * @param string $sql A staring containing multiple queries. |
| 25 | * |
| 26 | * @return array A list of queries. |
| 27 | */ |
| 28 | public static function splitSql($sql) |
| 29 | { |
| 30 | $start = 0; |
| 31 | $open = false; |
| 32 | $comment = false; |
| 33 | $endString = ''; |
| 34 | $end = strlen($sql); |
| 35 | $queries = array(); |
| 36 | $query = ''; |
| 37 | |
| 38 | for ($i = 0; $i < $end; $i++) |
| 39 | { |
| 40 | $current = substr($sql, $i, 1); |
| 41 | $current2 = substr($sql, $i, 2); |
| 42 | $current3 = substr($sql, $i, 3); |
| 43 | $lenEndString = strlen($endString); |
| 44 | $testEnd = substr($sql, $i, $lenEndString); |
| 45 | |
| 46 | if ($current == '"' || $current == "'" || $current2 == '--' |
| 47 | || ($current2 == '/*' && $current3 != '/*!' && $current3 != '/*+') |
| 48 | || ($current == '#' && $current3 != '#__') |
| 49 | || ($comment && $testEnd == $endString)) |
| 50 | { |
| 51 | // check if quoted with previous backslash |
| 52 | $n = 2; |
| 53 | |
| 54 | while (substr($sql, $i - $n + 1, 1) == '\\' && $n < $i) |
| 55 | { |
| 56 | $n++; |
| 57 | } |
| 58 | |
| 59 | // not quoted |
| 60 | if ($n % 2 == 0) |
| 61 | { |
| 62 | if ($open) |
| 63 | { |
| 64 | if ($testEnd == $endString) |
| 65 | { |
| 66 | if ($comment) |
| 67 | { |
| 68 | $comment = false; |
| 69 | if ($lenEndString > 1) |
| 70 | { |
| 71 | $i += ($lenEndString - 1); |
| 72 | $current = substr($sql, $i, 1); |
| 73 | } |
| 74 | $start = $i + 1; |
| 75 | } |
| 76 | $open = false; |
| 77 | $endString = ''; |
| 78 | } |
| 79 | } |
| 80 | else |
| 81 | { |
| 82 | $open = true; |
| 83 | if ($current2 == '--') |
| 84 | { |
| 85 | $endString = "\n"; |
| 86 | $comment = true; |
| 87 | } |
| 88 | elseif ($current2 == '/*') |
| 89 | { |
| 90 | $endString = '*/'; |
| 91 | $comment = true; |
| 92 | } |
| 93 | elseif ($current == '#') |
| 94 | { |
| 95 | $endString = "\n"; |
| 96 | $comment = true; |
| 97 | } |
| 98 | else |
| 99 | { |
| 100 | $endString = $current; |
| 101 | } |
| 102 | if ($comment && $start < $i) |
| 103 | { |
| 104 | $query = $query . substr($sql, $start, ($i - $start)); |
| 105 | } |
| 106 | } |
| 107 | } |
| 108 | } |
| 109 | |
| 110 | if ($comment) |
| 111 | { |
| 112 | $start = $i + 1; |
| 113 | } |
| 114 | |
| 115 | if (($current == ';' && !$open) || $i == $end - 1) |
| 116 | { |
| 117 | if ($start <= $i) |
| 118 | { |
| 119 | $query = $query . substr($sql, $start, ($i - $start + 1)); |
| 120 | } |
| 121 | $query = trim($query); |
| 122 | |
| 123 | if ($query) |
| 124 | { |
| 125 | if (($i == $end - 1) && ($current != ';')) |
| 126 | { |
| 127 | $query = $query . ';'; |
| 128 | } |
| 129 | $queries[] = $query; |
| 130 | } |
| 131 | |
| 132 | $query = ''; |
| 133 | $start = $i + 1; |
| 134 | } |
| 135 | } |
| 136 | |
| 137 | return $queries; |
| 138 | } |
| 139 | } |
| 140 |