Completed
Push — master ( 5d5e6d...30e78d )
by Greg
03:27 queued 01:18
created

Replace::limit()   A

Complexity

Conditions 1
Paths 1

Size

Total Lines 5

Duplication

Lines 0
Ratio 0 %

Importance

Changes 0
Metric Value
dl 0
loc 5
rs 10
c 0
b 0
f 0
cc 1
nc 1
nop 1
1
<?php
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namespace Robo\Task\File;
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use Robo\Result;
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use Robo\Task\BaseTask;
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/**
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 * Performs search and replace inside a files.
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 *
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 * ``` php
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 * <?php
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 * $this->taskReplaceInFile('VERSION')
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 *  ->from('0.2.0')
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 *  ->to('0.3.0')
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 *  ->run();
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 *
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 * $this->taskReplaceInFile('README.md')
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 *  ->from(date('Y')-1)
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 *  ->to(date('Y'))
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 *  ->run();
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 *
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 * $this->taskReplaceInFile('config.yml')
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 *  ->regex('~^service:~')
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 *  ->to('services:')
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 *  ->run();
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 *
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 * $this->taskReplaceInFile('box/robo.txt')
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 *  ->from(array('##dbname##', '##dbhost##'))
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 *  ->to(array('robo', 'localhost'))
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 *  ->run();
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 * ?>
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 * ```
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 */
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class Replace extends BaseTask
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{
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    /**
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     * @var string
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     */
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    protected $filename;
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    /**
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     * @var string|string[]
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     */
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    protected $from;
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    /**
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     * @var integer
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     */
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    protected $limit = -1;
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    /**
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     * @var string|string[]
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     */
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    protected $to;
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    /**
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     * @var string
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     */
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    protected $regex;
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    /**
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     * @param string $filename
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     */
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    public function __construct($filename)
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    {
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        $this->filename = $filename;
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    }
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    /**
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     * @param string $filename
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     *
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     * @return $this
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     */
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    public function filename($filename)
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    {
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        $this->filename = $filename;
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        return $this;
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    }
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    /**
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     * String(s) to be replaced.
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     *
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     * @param string|string[] $from
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     *
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     * @return $this
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     */
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    public function from($from)
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    {
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        $this->from = $from;
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        return $this;
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    }
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    /**
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     * Value(s) to be set as a replacement.
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     *
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     * @param string|string[] $to
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     *
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     * @return $this
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     */
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    public function to($to)
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    {
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        $this->to = $to;
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        return $this;
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    }
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    /**
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     * Regex to match string to be replaced.
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     *
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     * @param string $regex
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     *
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     * @return $this
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     */
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    public function regex($regex)
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    {
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        $this->regex = $regex;
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        return $this;
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    }
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    /**
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     * If used with $this->regexp() how many counts will be replaced
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     *
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     * @param int $limit
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     *
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     * @return $this
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     */
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    public function limit($limit)
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    {
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        $this->limit = $limit;
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        return $this;
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    }
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    /**
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     * {@inheritdoc}
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     */
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    public function run()
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    {
138 View Code Duplication
        if (!file_exists($this->filename)) {
0 ignored issues
show
Duplication introduced by
This code seems to be duplicated across your project.

Duplicated code is one of the most pungent code smells. If you need to duplicate the same code in three or more different places, we strongly encourage you to look into extracting the code into a single class or operation.

You can also find more detailed suggestions in the “Code” section of your repository.

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            $this->printTaskError('File {filename} does not exist', ['filename' => $this->filename]);
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            return false;
0 ignored issues
show
Bug Best Practice introduced by
The return type of return false; (false) is incompatible with the return type declared by the interface Robo\Contract\TaskInterface::run of type Robo\Result.

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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        $text = file_get_contents($this->filename);
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        if ($this->regex) {
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            $text = preg_replace($this->regex, $this->to, $text, $this->limit, $count);
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        } else {
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            $text = str_replace($this->from, $this->to, $text, $count);
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        }
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        if ($count > 0) {
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            $res = file_put_contents($this->filename, $text);
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            if ($res === false) {
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                return Result::error($this, "Error writing to file {filename}.", ['filename' => $this->filename]);
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            }
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            $this->printTaskSuccess("{filename} updated. {count} items replaced", ['filename' => $this->filename, 'count' => $count]);
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        } else {
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            $this->printTaskInfo("{filename} unchanged. {count} items replaced", ['filename' => $this->filename, 'count' => $count]);
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        }
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        return Result::success($this, '', ['replaced' => $count]);
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    }
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}
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