Transfer   A
last analyzed

Complexity

Total Complexity 18

Size/Duplication

Total Lines 96
Duplicated Lines 0 %

Coupling/Cohesion

Components 1
Dependencies 0

Test Coverage

Coverage 83.33%

Importance

Changes 0
Metric Value
wmc 18
lcom 1
cbo 0
dl 0
loc 96
c 0
b 0
f 0
ccs 40
cts 48
cp 0.8333
rs 10

8 Methods

Rating   Name   Duplication   Size   Complexity  
A __construct() 0 6 1
A getHeaders() 0 4 1
A getFormattedHeaders() 0 10 2
A getStatus() 0 4 1
A getTransferInformations() 0 12 2
A stream() 0 14 4
B getCachingHeaders() 0 18 5
A server_value() 0 4 2
1
<?php
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/**
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 * Image Manager
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 */
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namespace Onigoetz\Imagecache;
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/**
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 * Image manager
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 *
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 * Prepares the images for the cache
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 *
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 *
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 * @author Stéphane Goetz
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 */
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class Transfer
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{
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    protected $path;
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    protected $headers = [];
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    protected $status = 200;
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23 6
    public function __construct($path)
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    {
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        $this->path = $path;
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        $this->getTransferInformations();
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    }
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    public function getHeaders()
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    {
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        return $this->headers;
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    }
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    public function getFormattedHeaders()
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    {
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        $headers = [];
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        foreach ($this->headers as $name => $value) {
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            $headers[] = "$name: $value";
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        }
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        return $headers;
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    }
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    public function getStatus()
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    {
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        return $this->status;
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    }
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    protected function getTransferInformations()
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    {
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        $size = getimagesize($this->path);
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        $this->headers['Content-Type'] = $size['mime'];
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        if ($fileinfo = stat($this->path)) {
57 6
            $this->headers['Content-Length'] = $fileinfo[7];
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            $this->headers['Expires'] = gmdate('D, d M Y H:i:s', time() + 1209600) . ' GMT';
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            $this->headers['Cache-Control'] = 'max-age=1209600, private, must-revalidate';
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            $this->getCachingHeaders($fileinfo);
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        }
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    }
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    /**
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     * Transfer an image to the browser
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     */
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    public function stream()
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    {
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        if (ob_get_level()) {
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            ob_end_clean();
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        }
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        // Transfer file in 1024 byte chunks to save memory usage.
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        if ($fd = fopen($this->path, 'rb')) {
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            while (!feof($fd)) {
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                echo fread($fd, 1024);
77 1
            }
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            fclose($fd);
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        }
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    }
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    /**
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     * Set file headers that handle "If-Modified-Since" correctly for the
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     * given fileinfo.
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     *
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     * @param array $fileinfo Array returned by stat().
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     */
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    protected function getCachingHeaders($fileinfo)
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    {
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        // Set default values:
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        $last_modified = gmdate('D, d M Y H:i:s', $fileinfo[9]) . ' GMT';
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        $etag = md5($last_modified);
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        // See if the client has provided the required HTTP headers:
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        $if_modified_since = $this->server_value('HTTP_IF_MODIFIED_SINCE', false);
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        $if_none_match = $this->server_value('HTTP_IF_NONE_MATCH', false);
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        if ($if_modified_since && $if_none_match && $if_none_match == $etag && $if_modified_since == $last_modified) {
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            $this->status = 304;
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        }
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        // Send appropriate response:
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        $this->headers['Last-Modified'] = $last_modified;
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        $this->headers['ETag'] = $etag;
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    }
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107 6
    protected function server_value($key, $default)
0 ignored issues
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Coding Style introduced by Stéphane Goetz
server_value uses the super-global variable $_SERVER which is generally not recommended.

Instead of super-globals, we recommend to explicitly inject the dependencies of your class. This makes your code less dependent on global state and it becomes generally more testable:

// Bad
class Router
{
    public function generate($path)
    {
        return $_SERVER['HOST'].$path;
    }
}

// Better
class Router
{
    private $host;

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

    public function generate($path)
    {
        return $this->host.$path;
    }
}

class Controller
{
    public function myAction(Request $request)
    {
        // Instead of
        $page = isset($_GET['page']) ? intval($_GET['page']) : 1;

        // Better (assuming you use the Symfony2 request)
        $page = $request->query->get('page', 1);
    }
}
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    {
109 6
        return array_key_exists($key, $_SERVER) ? $_SERVER[$key] : $default;
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    }
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}
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