Member::getResource()   A
last analyzed

Complexity

Conditions 1
Paths 1

Size

Total Lines 4

Duplication

Lines 0
Ratio 0 %

Importance

Changes 0
Metric Value
dl 0
loc 4
rs 10
c 0
b 0
f 0
cc 1
nc 1
nop 0
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<?php
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/*
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 * This file is part of Zippy.
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 *
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 * (c) Alchemy <[email protected]>
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 *
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 * For the full copyright and license information, please view the LICENSE
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 * file that was distributed with this source code.
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 */
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namespace Alchemy\Zippy\Archive;
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use Alchemy\Zippy\Adapter\AdapterInterface;
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use Alchemy\Zippy\Adapter\Resource\ResourceInterface;
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/**
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 * Represents a member of an archive.
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 */
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class Member implements MemberInterface
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{
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    /**
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     * The location of the file
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     *
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     * @var string
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     */
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    private $location;
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    /**
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     * Tells whether the archive member is a directory or not
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     *
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     * @var bool
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     */
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    private $isDir;
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    /**
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     * The uncompressed size of the file
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     *
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     * @var int
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     */
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    private $size;
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    /**
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     * The last modified date of the file
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     *
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     * @var \DateTime
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     */
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    private $lastModifiedDate;
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    /**
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     * The resource to the actual archive
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     *
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     * @var string
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     */
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    private $resource;
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    /**
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     * An adapter
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     *
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     * @var AdapterInterface
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     */
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    private $adapter;
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    /**
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     * Constructor
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     *
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     * @param ResourceInterface $resource The path of the archive which contain the member
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     * @param AdapterInterface $adapter The archive adapter interface
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     * @param string $location The path of the archive member
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     * @param int $fileSize The uncompressed file size
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     * @param \DateTime $lastModifiedDate The last modified date of the member
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     * @param bool $isDir Tells whether the member is a directory or not
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     */
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    public function __construct(
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        ResourceInterface $resource,
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        AdapterInterface $adapter,
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        $location,
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        $fileSize,
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        \DateTime $lastModifiedDate,
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        $isDir
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    ) {
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        $this->resource = $resource;
0 ignored issues
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Documentation Bug introduced by
It seems like $resource of type object<Alchemy\Zippy\Ada...urce\ResourceInterface> is incompatible with the declared type string of property $resource.

Our type inference engine has found an assignment to a property that is incompatible with the declared type of that property.

Either this assignment is in error or the assigned type should be added to the documentation/type hint for that property..

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        $this->adapter = $adapter;
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        $this->location = $location;
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        $this->isDir = $isDir;
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        $this->size = $fileSize;
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        $this->lastModifiedDate = $lastModifiedDate;
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    }
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    /**
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     * {@inheritdoc}
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     */
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    public function getLocation()
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    {
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        return $this->location;
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    }
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    /**
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     * {@inheritdoc}
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     */
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    public function isDir()
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    {
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        return $this->isDir;
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    }
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    /**
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     * {@inheritdoc}
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     */
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    public function getLastModifiedDate()
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    {
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        return $this->lastModifiedDate;
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    }
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    /**
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     * {@inheritdoc}
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     */
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    public function getSize()
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    {
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        return $this->size;
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    }
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    /**
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     * {@inheritdoc}
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     */
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    public function __toString()
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    {
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        return $this->location;
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    }
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    /**
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     * {@inheritdoc}
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     */
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    public function extract($to = null, $overwrite = false)
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    {
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        $this->adapter->extractMembers($this->resource, $this->location, $to, (bool) $overwrite);
0 ignored issues
show
Documentation introduced by
$this->resource is of type string, but the function expects a object<Alchemy\Zippy\Ada...urce\ResourceInterface>.

It seems like the type of the argument is not accepted by the function/method which you are calling.

In some cases, in particular if PHP’s automatic type-juggling kicks in this might be fine. In other cases, however this might be a bug.

We suggest to add an explicit type cast like in the following example:

function acceptsInteger($int) { }

$x = '123'; // string "123"

// Instead of
acceptsInteger($x);

// we recommend to use
acceptsInteger((integer) $x);
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        return new \SplFileInfo(sprintf('%s/%s', rtrim(null === $to ? getcwd() : $to, '/'), ltrim($this->location, '/')));
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    }
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    /**
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     * @inheritdoc
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     * */
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    public function getResource()
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    {
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        return $this->resource;
0 ignored issues
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Bug Best Practice introduced by
The return type of return $this->resource; (string) is incompatible with the return type declared by the interface Alchemy\Zippy\Archive\MemberInterface::getResource of type Alchemy\Zippy\Adapter\Resource\ResourceInterface.

If you return a value from a function or method, it should be a sub-type of the type that is given by the parent type f.e. an interface, or abstract method. This is more formally defined by the Lizkov substitution principle, and guarantees that classes that depend on the parent type can use any instance of a child type interchangably. This principle also belongs to the SOLID principles for object oriented design.

Let’s take a look at an example:

class Author {
    private $name;

    public function __construct($name) {
        $this->name = $name;
    }

    public function getName() {
        return $this->name;
    }
}

abstract class Post {
    public function getAuthor() {
        return 'Johannes';
    }
}

class BlogPost extends Post {
    public function getAuthor() {
        return new Author('Johannes');
    }
}

class ForumPost extends Post { /* ... */ }

function my_function(Post $post) {
    echo strtoupper($post->getAuthor());
}

Our function my_function expects a Post object, and outputs the author of the post. The base class Post returns a simple string and outputting a simple string will work just fine. However, the child class BlogPost which is a sub-type of Post instead decided to return an object, and is therefore violating the SOLID principles. If a BlogPost were passed to my_function, PHP would not complain, but ultimately fail when executing the strtoupper call in its body.

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    }
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}
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