Initial EV files

system/Database/SQLite3/Result.php

@@ -0,0 +1,183 @@
+<?php
+
+/**
+ * This file is part of the CodeIgniter 4 framework.
+ *
+ * (c) CodeIgniter Foundation <admin@codeigniter.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace CodeIgniter\Database\SQLite3;
+
+use Closure;
+use CodeIgniter\Database\BaseResult;
+use CodeIgniter\Database\Exceptions\DatabaseException;
+use CodeIgniter\Entity\Entity;
+use stdClass;
+
+/**
+ * Result for SQLite3
+ */
+class Result extends BaseResult
+{
+	/**
+	 * Gets the number of fields in the result set.
+	 *
+	 * @return integer
+	 */
+	public function getFieldCount(): int
+	{
+		return $this->resultID->numColumns(); // @phpstan-ignore-line
+	}
+
+	//--------------------------------------------------------------------
+
+	/**
+	 * Generates an array of column names in the result set.
+	 *
+	 * @return array
+	 */
+	public function getFieldNames(): array
+	{
+		$fieldNames = [];
+		for ($i = 0, $c = $this->getFieldCount(); $i < $c; $i ++)
+		{
+			$fieldNames[] = $this->resultID->columnName($i); // @phpstan-ignore-line
+		}
+
+		return $fieldNames;
+	}
+
+	//--------------------------------------------------------------------
+
+	/**
+	 * Generates an array of objects representing field meta-data.
+	 *
+	 * @return array
+	 */
+	public function getFieldData(): array
+	{
+		static $dataTypes = [
+			SQLITE3_INTEGER => 'integer',
+			SQLITE3_FLOAT   => 'float',
+			SQLITE3_TEXT    => 'text',
+			SQLITE3_BLOB    => 'blob',
+			SQLITE3_NULL    => 'null',
+		];
+
+		$retVal = [];
+		$this->resultID->fetchArray(SQLITE3_NUM); // @phpstan-ignore-line
+
+		for ($i = 0, $c = $this->getFieldCount(); $i < $c; $i ++)
+		{
+			$retVal[$i]             = new stdClass();
+			$retVal[$i]->name       = $this->resultID->columnName($i); // @phpstan-ignore-line
+			$type                   = $this->resultID->columnType($i); // @phpstan-ignore-line
+			$retVal[$i]->type       = $type;
+			$retVal[$i]->type_name  = $dataTypes[$type] ?? null;
+			$retVal[$i]->max_length = null;
+			$retVal[$i]->length     = null;
+		}
+		$this->resultID->reset(); // @phpstan-ignore-line
+
+		return $retVal;
+	}
+
+	//--------------------------------------------------------------------
+
+	/**
+	 * Frees the current result.
+	 *
+	 * @return void
+	 */
+	public function freeResult()
+	{
+		if (is_object($this->resultID))
+		{
+			$this->resultID->finalize();
+			$this->resultID = false;
+		}
+	}
+
+	//--------------------------------------------------------------------
+
+	/**
+	 * Moves the internal pointer to the desired offset. This is called
+	 * internally before fetching results to make sure the result set
+	 * starts at zero.
+	 *
+	 * @param integer $n
+	 *
+	 * @return mixed
+	 * @throws DatabaseException
+	 */
+	public function dataSeek(int $n = 0)
+	{
+		if ($n !== 0)
+		{
+			throw new DatabaseException('SQLite3 doesn\'t support seeking to other offset.');
+		}
+
+		return $this->resultID->reset(); // @phpstan-ignore-line
+	}
+
+	//--------------------------------------------------------------------
+
+	/**
+	 * Returns the result set as an array.
+	 *
+	 * Overridden by driver classes.
+	 *
+	 * @return mixed
+	 */
+	protected function fetchAssoc()
+	{
+		return $this->resultID->fetchArray(SQLITE3_ASSOC); // @phpstan-ignore-line
+	}
+
+	//--------------------------------------------------------------------
+
+	/**
+	 * Returns the result set as an object.
+	 *
+	 * Overridden by child classes.
+	 *
+	 * @param string $className
+	 *
+	 * @return object|boolean
+	 */
+	protected function fetchObject(string $className = 'stdClass')
+	{
+		// No native support for fetching rows as objects
+		if (($row = $this->fetchAssoc()) === false)
+		{
+			return false;
+		}
+
+		if ($className === 'stdClass')
+		{
+			return (object) $row;
+		}
+
+		$classObj = new $className();
+
+		if (is_subclass_of($className, Entity::class))
+		{
+			return $classObj->setAttributes($row);
+		}
+
+		$classSet = Closure::bind(function ($key, $value) {
+			$this->$key = $value;
+		}, $classObj, $className
+		);
+		foreach (array_keys($row) as $key)
+		{
+			$classSet($key, $row[$key]);
+		}
+		return $classObj;
+	}
+
+	//--------------------------------------------------------------------
+}