AdapterFile::deleteFile() - Code Metrics - Inspection of "[+]: added "File"-Cache Class" - voku/simple-cache - Measure and Improve Code Quality continuously with Scrutinizer

Completed

Push — master ( 18312a...f64dc4 )

by Lars

created 2016-06-07 15:13 UTC

AdapterFile::deleteFile() A

↳ Parent: AdapterFile

Complexity

Conditions	2
Paths	2

Size

Total Lines	8
Code Lines	4

Duplication

Lines	0
Ratio	0 %

Code Coverage

Tests	0
CRAP Score	6

Importance

Changes	1
Bugs	0	Features	1

Metric	Value
c	1
b	0
f	1
dl	0
loc	8
ccs	0
cts	4
cp	0
rs	9.4285
cc	2
eloc	4
nc	2
nop	1
crap	6

<?php

namespace voku\cache;

/**
 * AdapterFile: File-adapter
 *
 * @package   voku\cache
 */
class AdapterFile implements iAdapter
{
  const CACHE_FILE_PREFIX = '__';
  const CACHE_FILE_SUBFIX = '.php.cache';

  /**
   * @var bool
   */
  public $installed = false;

  /**
   * @var string
   */
  protected $cacheDir;

  /**
   * @var iSerializer
   */
  protected $serializer;

  /**
   * @param string $cacheDir
   */
  public function __construct($cacheDir = null)
  {
    $this->serializer = new SerializerIgbinary();

    if (!$cacheDir) {
''   == false // true
''   == null  // true
'ab' == false // false
'ab' == null  // false

// It is often better to use strict comparison
'' === false // false
'' === null  // false
      $cacheDir = realpath(sys_get_temp_dir()) . '/cache';
    }

    $this->cacheDir = (string)$cacheDir;

    if ($this->createCacheDirectory($cacheDir) === true) {
      $this->installed = true;
    }
  }

  /**
   * @param string $key
   *
   * @param        $key
   *
   * @return bool
   */
  public function remove($key)
  {
    $cacheFile = $this->getFileName($key);

    return $this->deleteFile($cacheFile);
  }

  /**
   * @param string $key
   *
   * @return mixed
   */
  public function get($key)
  {
    $path = $this->getFileName($key);

    if (!file_exists($path)) {
      return null;
    }

    $data = $this->serializer->unserialize(file_get_contents($path));

    if (!$data || !$this->validateDataFromCache($data)) {
      return null;
    }

    if ($this->ttlHasExpired($data['ttl']) === true) {
      $this->remove($key);
      
      return null;
    }

    return $data['value'];
  }

  /**
   * @param $data
   *
   * @return bool
   */
  protected function validateDataFromCache($data)
  {
    if (!is_array($data)) {
      return false;
    }

    foreach (array('value', 'ttl') as $missing) {
      if (!array_key_exists($missing, $data)) {
        return false;
      }
    }

    return true;
  }

  /**
   * @param string $key
   *
   * @return bool
   */
  public function exists($key)
  {
    return null !== $this->get($key);
  }

  /**
   * @param string $key
   * @param mixed  $value
   *
   * @return bool
   */
  public function set($key, $value)
  {
    return $this->setExpired($key, $value);
  }

  /**
   * @param string $key
   * @param mixed  $value
   * @param int    $ttl
   *
   * @return bool
   */
  public function setExpired($key, $value, $ttl = 0)
  {
    $item = $this->serializer->serialize(
        array(
            'value' => $value,
            'ttl'   => $ttl ? (int)$ttl + time() : 0,
        )
    );

    if (!file_put_contents($this->getFileName($key), $item)) {
      return false;
    }

    return true;
  }

  protected function createCacheDirectory($path)
  {
    if (!@mkdir($path, 0777, true) || !is_dir($path)) {
      return false;
    }

    if (!is_writable($path)) {
      return false;
    }

    return true;
  }

  /**
   * @param $cacheFile
   *
   * @return bool
   */
  protected function deleteFile($cacheFile)
  {
    if (is_file($cacheFile)) {
      return unlink($cacheFile);
    }

    return false;
  }

  /**
   * @param string $key
   *
   * @return string
   */
  protected function getFileName($key)
  {
    return $this->cacheDir . DIRECTORY_SEPARATOR . self::CACHE_FILE_PREFIX . $key . self::CACHE_FILE_SUBFIX;
  }

  /**
   * @param $ttl
   *
   * @return bool
   */
  protected function ttlHasExpired($ttl)
  {
    if ($ttl === 0) {
      return false;
    }

    return (time() > $ttl);
  }

  /**
   * check if cache is installed
   *
   * @return boolean
   */
  public function installed()
  {
    return $this->installed;
  }
}

1		<?php
2
3		namespace voku\cache;
4
5		/**
6		* AdapterFile: File-adapter
7		*
8		* @package voku\cache
9		*/
10		class AdapterFile implements iAdapter
11		{
12		const CACHE_FILE_PREFIX = '__';
13		const CACHE_FILE_SUBFIX = '.php.cache';
14
15		/**
16		* @var bool
17		*/
18		public $installed = false;
19
20		/**
21		* @var string
22		*/
23		protected $cacheDir;
24
25		/**
26		* @var iSerializer
27		*/
28		protected $serializer;
29
30		/**
31		* @param string $cacheDir
32		*/
33	6	public function __construct($cacheDir = null)
34		{
35	6	$this->serializer = new SerializerIgbinary();
36
37	6	if (!$cacheDir) {
		0 ignored issues – show Bug Best Practice introduced 2016-06-07 15:16 UTC by Report Bug Copy Issue Report The expression `$cacheDir` of type `string\|null` is loosely compared to `false`; this is ambiguous if the string can be empty. You might want to explicitly use `=== null` instead. In PHP, under loose comparison (like `==`, or `!=`, or `switch` conditions), values of different types might be equal. For `string` values, the empty string `''` is a special case, in particular the following results might be unexpected: '' == false // true '' == null // true 'ab' == false // false 'ab' == null // false // It is often better to use strict comparison '' === false // false '' === null // false Loading history...
38	6	$cacheDir = realpath(sys_get_temp_dir()) . '/cache';
39	6	}
40
41	6	$this->cacheDir = (string)$cacheDir;
42
43	6	if ($this->createCacheDirectory($cacheDir) === true) {
44	1	$this->installed = true;
45	1	}
46	6	}
47
48		/**
49		* @param string $key
50		*
51		* @param $key
52		*
53		* @return bool
54		*/
55		public function remove($key)
56		{
57		$cacheFile = $this->getFileName($key);
58
59		return $this->deleteFile($cacheFile);
60		}
61
62		/**
63		* @param string $key
64		*
65		* @return mixed
66		*/
67	4	public function get($key)
68		{
69	4	$path = $this->getFileName($key);
70
71	4	if (!file_exists($path)) {
72		return null;
73		}
74
75	4	$data = $this->serializer->unserialize(file_get_contents($path));
76
77	4	if (!$data \|\| !$this->validateDataFromCache($data)) {
78		return null;
79		}
80
81	4	if ($this->ttlHasExpired($data['ttl']) === true) {
82		$this->remove($key);
83
84		return null;
85		}
86
87	4	return $data['value'];
88		}
89
90		/**
91		* @param $data
92		*
93		* @return bool
94		*/
95	4	protected function validateDataFromCache($data)
96		{
97	4	if (!is_array($data)) {
98		return false;
99		}
100
101	4	foreach (array('value', 'ttl') as $missing) {
102	4	if (!array_key_exists($missing, $data)) {
103		return false;
104		}
105	4	}
106
107	4	return true;
108		}
109
110		/**
111		* @param string $key
112		*
113		* @return bool
114		*/
115	1	public function exists($key)
116		{
117	1	return null !== $this->get($key);
118		}
119
120		/**
121		* @param string $key
122		* @param mixed $value
123		*
124		* @return bool
125		*/
126	2	public function set($key, $value)
127		{
128	2	return $this->setExpired($key, $value);
129		}
130
131		/**
132		* @param string $key
133		* @param mixed $value
134		* @param int $ttl
135		*
136		* @return bool
137		*/
138	3	public function setExpired($key, $value, $ttl = 0)
139		{
140	3	$item = $this->serializer->serialize(
141		array(
142	3	'value' => $value,
143	3	'ttl' => $ttl ? (int)$ttl + time() : 0,
144		)
145	3	);
146
147	3	if (!file_put_contents($this->getFileName($key), $item)) {
148		return false;
149		}
150
151	3	return true;
152		}
153
154	6	protected function createCacheDirectory($path)
155		{
156	6	if (!@mkdir($path, 0777, true) \|\| !is_dir($path)) {
157	5	return false;
158		}
159
160	1	if (!is_writable($path)) {
161		return false;
162		}
163
164	1	return true;
165		}
166
167		/**
168		* @param $cacheFile
169		*
170		* @return bool
171		*/
172		protected function deleteFile($cacheFile)
173		{
174		if (is_file($cacheFile)) {
175		return unlink($cacheFile);
176		}
177
178		return false;
179		}
180
181		/**
182		* @param string $key
183		*
184		* @return string
185		*/
186	5	protected function getFileName($key)
187		{
188	5	return $this->cacheDir . DIRECTORY_SEPARATOR . self::CACHE_FILE_PREFIX . $key . self::CACHE_FILE_SUBFIX;
189		}
190
191		/**
192		* @param $ttl
193		*
194		* @return bool
195		*/
196	4	protected function ttlHasExpired($ttl)
197		{
198	4	if ($ttl === 0) {
199	3	return false;
200		}
201
202	1	return (time() > $ttl);
203		}
204
205		/**
206		* check if cache is installed
207		*
208		* @return boolean
209		*/
210		public function installed()
211		{
212		return $this->installed;
213		}
214		}

voku / simple-cache

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AdapterFile::deleteFile() A

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