<?php

/**
 * CodeIgniter
 *
 * An open source application development framework for PHP
 *
 * This content is released under the MIT License (MIT)
 *
 * Copyright (c) 2014 - 2017, British Columbia Institute of Technology
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 * THE SOFTWARE.
 *
 * @package	CodeIgniter
 * @author	EllisLab Dev Team
 * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
 * @copyright	Copyright (c) 2014 - 2017, British Columbia Institute of Technology (http://bcit.ca/)
 * @license	http://opensource.org/licenses/MIT	MIT License
 * @link	https://codeigniter.com
 * @since	Version 3.0.0
 * @filesource
 */
defined('BASEPATH') OR exit('No direct script access allowed');

/**
 * Interbase/Firebird Result Class
 *
 * This class extends the parent result class: CI_DB_result
 *
 * @category	Database
 * @author		EllisLab Dev Team
 * @link		https://codeigniter.com/user_guide/database/
 */
class CI_DB_ibase_result extends CI_DB_result {

    /**
     * Number of fields in the result set
     *
     * @return	int
     */
    public function num_fields() {
        return ibase_num_fields($this->result_id);
    }

    // --------------------------------------------------------------------

    /**
     * Fetch Field Names
     *
     * Generates an array of column names
     *
     * @return	array
     */
    public function list_fields() {
        $field_names = array();
        for ($i = 0, $num_fields = $this->num_fields(); $i < $num_fields; $i++) {
            $info = ibase_field_info($this->result_id, $i);
            $field_names[] = $info['name'];
        }

        return $field_names;
    }

    // --------------------------------------------------------------------

    /**
     * Field data
     *
     * Generates an array of objects containing field meta-data
     *
     * @return	array
     */
    public function field_data() {
        $retval = array();
        for ($i = 0, $c = $this->num_fields(); $i < $c; $i++) {
            $info = ibase_field_info($this->result_id, $i);

            $retval[$i] = new stdClass();
            $retval[$i]->name = $info['name'];
            $retval[$i]->type = $info['type'];
            $retval[$i]->max_length = $info['length'];
        }

        return $retval;
    }

    // --------------------------------------------------------------------

    /**
     * Free the result
     *
     * @return	void
     */
    public function free_result() {
        ibase_free_result($this->result_id);
    }

    // --------------------------------------------------------------------

    /**
     * Result - associative array
     *
     * Returns the result set as an array
     *
     * @return	array
     */
    protected function _fetch_assoc() {
        return ibase_fetch_assoc($this->result_id, IBASE_FETCH_BLOBS);
    }

    // --------------------------------------------------------------------

    /**
     * Result - object
     *
     * Returns the result set as an object
     *
     * @param	string	$class_name
     * @return	object
     */
    protected function _fetch_object($class_name = 'stdClass') {
        $row = ibase_fetch_object($this->result_id, IBASE_FETCH_BLOBS);

        if ($class_name === 'stdClass' OR ! $row) {
            return $row;
        }

        $class_name = new $class_name();
        foreach ($row as $key => $value) {
            $class_name->$key = $value;
        }

        return $class_name;
    }

}
