Runalyze\DEM\Provider\AbstractResourceReader

Complexity

Total Complexity

7

Size/Duplication

Total Lines	51
Duplicated Lines	0 %

Coupling/Cohesion

Components	1
Dependencies	1

Test Coverage

Coverage

100%

Importance

Changes	2
Bugs	0	Features	1

6 Methods

Rating	Name	Duplication	Size	Complexity
	readHeader()	0	1	?
	getElevationFor()	0	1	?
A	__construct()	0	6	2
A	__destruct()	0	4	1
A	setResource()	0	10	2
A	closeResource()	0	6	2

<?php

/*
 * This file is part of the Runalyze DEM Reader.
 *
 * (c) RUNALYZE <mail@runalyze.com>
 *
 * This source file is subject to the MIT license that is bundled
 * with this source code in the file LICENSE.
 */

namespace Runalyze\DEM\Provider;

use Runalyze\DEM\Exception\RuntimeException;

abstract class AbstractResourceReader implements ResourceReaderInterface
{
    /** @var resource|bool */
    protected $FileResource = false;

    /**
     * @param resource|bool $resource
     */
    public function __construct($resource = false)
    {
        if (false !== $resource) {
            $this->setResource($resource);
        }
    }

    public function __destruct()
    {
        $this->closeResource();
    }

    /**
     * @param  resource         $resource
     * @throws RuntimeException
     */
    public function setResource($resource)
    {
        $this->closeResource();

        $this->FileResource = $resource;

        if (false === $this->FileResource) {
            throw new RuntimeException('Provided resource is invalid.');
        }
    }

    protected function closeResource()
    {
        if (is_resource($this->FileResource)) {
            fclose($this->FileResource);
        }
    }

    abstract public function readHeader();

    /**
     * @param  int      $row
     * @param  int      $col
     * @return int|bool elevation [m] can be false if nothing retrieved or value is unknown
     */
    abstract public function getElevationFor($row, $col);
}