1 files changed, 74 insertions, 0 deletions
diff --git a/lib/private/DB/AdapterSqlite.php b/lib/private/DB/AdapterSqlite.php
new file mode 100644
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+++ b/lib/private/DB/AdapterSqlite.php
@@ -0,0 +1,74 @@
+<?php
+/**
+ * @author Bart Visscher <bartv@thisnet.nl>
+ * @author Joas Schilling <nickvergessen@owncloud.com>
+ * @author Morris Jobke <hey@morrisjobke.de>
+ * @author Robin Appelman <icewind@owncloud.com>
+ * @author Thomas Müller <thomas.mueller@tmit.eu>
+ *
+ * @copyright Copyright (c) 2016, ownCloud, Inc.
+ * @license AGPL-3.0
+ *
+ * This code is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License, version 3,
+ * as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License, version 3,
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>
+ *
+ */
+
+
+namespace OC\DB;
+
+class AdapterSqlite extends Adapter {
+	public function fixupStatement($statement) {
+		$statement = preg_replace('( I?LIKE \?)', '$0 ESCAPE \'\\\'', $statement);
+		$statement = preg_replace('/`(\w+)` ILIKE \?/', 'LOWER($1) LIKE LOWER(?)', $statement);
+		$statement = str_replace( '`', '"', $statement );
+		$statement = str_ireplace( 'NOW()', 'datetime(\'now\')', $statement );
+		$statement = str_ireplace( 'UNIX_TIMESTAMP()', 'strftime(\'%s\',\'now\')', $statement );
+		return $statement;
+	}
+
+	/**
+	 * Insert a row if the matching row does not exists.
+	 *
+	 * @param string $table The table name (will replace *PREFIX* with the actual prefix)
+	 * @param array $input data that should be inserted into the table  (column name => value)
+	 * @param array|null $compare List of values that should be checked for "if not exists"
+	 *				If this is null or an empty array, all keys of $input will be compared
+	 *				Please note: text fields (clob) must not be used in the compare array
+	 * @return int number of inserted rows
+	 * @throws \Doctrine\DBAL\DBALException
+	 */
+	public function insertIfNotExist($table, $input, array $compare = null) {
+		if (empty($compare)) {
+			$compare = array_keys($input);
+		}
+		$fieldList = '`' . implode('`,`', array_keys($input)) . '`';
+		$query = "INSERT INTO `$table` ($fieldList) SELECT "
+			. str_repeat('?,', count($input)-1).'? '
+			. " WHERE NOT EXISTS (SELECT 1 FROM `$table` WHERE ";
+
+		$inserts = array_values($input);
+		foreach($compare as $key) {
+			$query .= '`' . $key . '`';
+			if (is_null($input[$key])) {
+				$query .= ' IS NULL AND ';
+			} else {
+				$inserts[] = $input[$key];
+				$query .= ' = ? AND ';
+			}
+		}
+		$query = substr($query, 0, strlen($query) - 5);
+		$query .= ')';
+
+		return $this->conn->executeUpdate($query, $inserts);
+	}
+}