90 lines
2.7 KiB
PHP
90 lines
2.7 KiB
PHP
<?php
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/**
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* @package SQLite Integration
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* @author Kojima Toshiyasu, Justin Adie
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*/
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/**
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* Function to create tables according to the schemas of WordPress
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* This is run only once while installation.
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* @return boolean
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*/
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function make_db_sqlite() {
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include_once PDODIR . 'query_create.class.php';
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include_once ABSPATH . 'wp-admin/includes/schema.php';
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$index_array = array();
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ob_end_clean();
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$table_schemas = wp_get_db_schema();
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$queries = explode (";", $table_schemas);
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$query_parser = new CreateQuery();
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try {
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$pdo = new PDO('sqlite:'.FQDB, null, null, array(PDO::ATTR_ERRMODE => PDO::ERRMODE_EXCEPTION));
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} catch (PDOException $err) {
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$err_data = $err->errorInfo;
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$message = 'Database connection error!<br />';
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$message .= sprintf("Error message is: %s", $err_data[2]);
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echo $message;
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return false;
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}
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try {
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$pdo->beginTransaction();
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foreach ($queries as $query) {
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$query = trim($query);
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if (empty($query))
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continue;
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$rewritten_query = $query_parser->rewrite_query($query);
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if (is_array($rewritten_query)) {
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$table_query = array_shift($rewritten_query);
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$index_queries = $rewritten_query;
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$table_query = trim($table_query);
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$pdo->exec($table_query);
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// foreach($rewritten_query as $single_query) {
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// $single_query = trim($single_query);
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// $pdo->exec($single_query);
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// }
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} else {
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$rewritten_query = trim($rewritten_query);
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$pdo->exec($rewritten_query);
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}
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}
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$pdo->commit();
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if ($index_queries) {
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// $query_parser rewrites KEY to INDEX, so we don't need KEY pattern
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$pattern = '/CREATE\\s*(UNIQUE\\s*INDEX|INDEX)\\s*IF\\s*NOT\\s*EXISTS\\s*(\\w+)?\\s*.*/im';
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$pdo->beginTransaction();
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foreach ($index_queries as $index_query) {
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preg_match($pattern, $index_query, $match);
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$index_name = trim($match[2]);
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if (in_array($index_name, $index_array)) {
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$r = rand(0, 50);
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$replacement = $index_name . "_$r";
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$index_query = str_ireplace('EXISTS '.$index_name, 'EXISTS '.$replacement, $index_query);
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} else {
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$index_array[] = $index_name;
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}
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$pdo->exec($index_query);
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}
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$pdo->commit();
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}
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} catch (PDOException $err) {
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$err_data = $err->errorInfo;
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$err_code = $err_data[1];
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if (5 == $err_code || 6 == $err_code) {
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// if the database is locked, commit again
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$pdo->commit();
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} else {
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$pdo->rollBack();
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$message = sprintf("Error occured while creating tables or indexes...<br />Query was: %s<br />", var_export($rewritten_query, true));
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$message .= sprintf("Error message is: %s", $err_data[2]);
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echo $message;
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return false;
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}
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}
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$query_parser = null;
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$pdo = null;
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return true;
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}
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?>
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