Swift_KeyCache_DiskKeyCache::_freeHandle() - Code Metrics - voku/swiftmailer - Measure and Improve Code Quality continuously with Scrutinizer

Swift_KeyCache_DiskKeyCache::_freeHandle() A
last analyzed 2017-12-05 09:25 UTC

↳ Parent: Swift_KeyCache_DiskKeyCache

Complexity

Conditions	1
Paths	1

Size

Total Lines	6
Code Lines	4

Duplication

Lines	0
Ratio	0 %

Code Coverage

Tests	5
CRAP Score	1

Importance

Changes

Metric	Value
cc	1
eloc	4
nc	1
nop	2
dl	0
loc	6
rs	9.4285
c	0
b	0
f	0
ccs	5
cts	5
cp	1
crap	1

<?php

/*
 * This file is part of SwiftMailer.
 * (c) 2004-2009 Chris Corbyn
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

/**
 * A KeyCache which streams to and from disk.
 *
 * @author Chris Corbyn
 */
class Swift_KeyCache_DiskKeyCache implements Swift_KeyCache
namespace YourVendor;

class YourClass { }
{
    /** Signal to place pointer at start of file */
    const POSITION_START = 0;

    /** Signal to place pointer at end of file */
    const POSITION_END = 1;

    /** Signal to leave pointer in whatever position it currently is */
    const POSITION_CURRENT = 2;

    /**
     * An InputStream for cloning.
     *
     * @var Swift_KeyCache_KeyCacheInputStream
     */
    private $_stream;

    /**
     * A path to write to.
     *
     * @var string
     */
    private $_path;

    /**
     * Stored keys.
     *
     * @var array
     */
    private $_keys = array();

    /**
     * Will be true if magic_quotes_runtime is turned on.
     *
     * @var bool
     */
    private $_quotes = false;

    /**
     * Create a new DiskKeyCache with the given $stream for cloning to make
     * InputByteStreams, and the given $path to save to.
     *
     * @param Swift_KeyCache_KeyCacheInputStream $stream
     * @param string                             $path   to save to
     */
    public function __construct(Swift_KeyCache_KeyCacheInputStream $stream, $path)
    {
        $this->_stream = $stream;
        $this->_path = $path;

        if (function_exists('get_magic_quotes_runtime') && @get_magic_quotes_runtime() === 1) {
            $this->_quotes = true;
        }
    }

    /**
     * Set a string into the cache under $itemKey for the namespace $nsKey.
     *
     * @see MODE_WRITE, MODE_APPEND
     *
     * @param string $nsKey
     * @param string $itemKey
     * @param string $string
     * @param int    $mode
     *
     * @throws Swift_IoException
     * @throws Swift_SwiftException
     */
    public function setString($nsKey, $itemKey, $string, $mode)
    {
        $this->_prepareCache($nsKey);

        switch ($mode) {

            case self::MODE_WRITE:
                $fp = $this->_getHandle($nsKey, $itemKey, self::POSITION_START);
                break;
            case self::MODE_APPEND:
                $fp = $this->_getHandle($nsKey, $itemKey, self::POSITION_END);
                break;
            default:
                throw new Swift_SwiftException(
                    'Invalid mode [' . $mode . '] used to set nsKey=' .
                    $nsKey . ', itemKey=' . $itemKey
                    );
                break;
function fx() {
    try {
        doSomething();
        return true;
    }
    catch (\Exception $e) {
        return false;
    }

    return false;
}
        }

        fwrite($fp, $string);
        $this->_freeHandle($nsKey, $itemKey);
    }

    /**
     * Set a ByteStream into the cache under $itemKey for the namespace $nsKey.
     *
     * @see MODE_WRITE, MODE_APPEND
     *
     * @param string                 $nsKey
     * @param string                 $itemKey
     * @param Swift_OutputByteStream $os
     * @param int                    $mode
     *
     * @throws Swift_IoException
     */
    public function importFromByteStream($nsKey, $itemKey, Swift_OutputByteStream $os, $mode)
    {
        $this->_prepareCache($nsKey);
        switch ($mode) {

            case self::MODE_WRITE:
                $fp = $this->_getHandle($nsKey, $itemKey, self::POSITION_START);
                break;
            case self::MODE_APPEND:
                $fp = $this->_getHandle($nsKey, $itemKey, self::POSITION_END);
                break;
            default:
                throw new Swift_SwiftException(
                    'Invalid mode [' . $mode . '] used to set nsKey=' .
                    $nsKey . ', itemKey=' . $itemKey
                    );
                break;
function fx() {
    try {
        doSomething();
        return true;
    }
    catch (\Exception $e) {
        return false;
    }

    return false;
}
        }

        while (false !== $bytes = $os->read(8192)) {
            fwrite($fp, $bytes);
        }

        $this->_freeHandle($nsKey, $itemKey);
    }

    /**
     * Provides a ByteStream which when written to, writes data to $itemKey.
     *
     * NOTE: The stream will always write in append mode.
     *
     * @param string                $nsKey
     * @param string                $itemKey
     * @param Swift_InputByteStream $writeThrough
     *
     * @return Swift_InputByteStream
     */
    public function getInputByteStream($nsKey, $itemKey, Swift_InputByteStream $writeThrough = null)

    {
        $is = clone $this->_stream;

        $is->setKeyCache($this);
        $is->setNsKey($nsKey);
        $is->setItemKey($itemKey);

        if (isset($writeThrough)) {
            $is->setWriteThroughStream($writeThrough);
        }

        return $is;
    }

    /**
     * Get data back out of the cache as a string.
     *
     * @param string $nsKey
     * @param string $itemKey
     *
     * @throws Swift_IoException
     *
     * @return string
     */
    public function getString($nsKey, $itemKey)
    {
        $this->_prepareCache($nsKey);
        if ($this->hasKey($nsKey, $itemKey)) {

            $fp = $this->_getHandle($nsKey, $itemKey, self::POSITION_START);
            if ($this->_quotes) {
                ini_set('magic_quotes_runtime', 0);
            }

            $str = '';
            while (!feof($fp) && false !== $bytes = fread($fp, 8192)) {
                $str .= $bytes;
            }

            if ($this->_quotes) {
                ini_set('magic_quotes_runtime', 1);
            }

            $this->_freeHandle($nsKey, $itemKey);

            return $str;
        }
    }

    /**
     * Get data back out of the cache as a ByteStream.
     *
     * @param string                $nsKey
     * @param string                $itemKey
     * @param Swift_InputByteStream $is      to write the data to
     */
    public function exportToByteStream($nsKey, $itemKey, Swift_InputByteStream $is)
    {
        if ($this->hasKey($nsKey, $itemKey)) {

            $fp = $this->_getHandle($nsKey, $itemKey, self::POSITION_START);

            if ($this->_quotes) {
                ini_set('magic_quotes_runtime', 0);
            }

            while (!feof($fp) && false !== $bytes = fread($fp, 8192)) {
                $is->write($bytes);
            }

            if ($this->_quotes) {
                ini_set('magic_quotes_runtime', 1);
            }

            $this->_freeHandle($nsKey, $itemKey);
        }
    }

    /**
     * Check if the given $itemKey exists in the namespace $nsKey.
     *
     * @param string $nsKey
     * @param string $itemKey
     *
     * @return bool
     */
    public function hasKey($nsKey, $itemKey)
    {
        return is_file($this->_path . '/' . $nsKey . '/' . $itemKey);
    }

    /**
     * Clear data for $itemKey in the namespace $nsKey if it exists.
     *
     * @param string $nsKey
     * @param string $itemKey
     */
    public function clearKey($nsKey, $itemKey)
    {
        if ($this->hasKey($nsKey, $itemKey)) {
            $this->_freeHandle($nsKey, $itemKey);
            unlink($this->_path . '/' . $nsKey . '/' . $itemKey);
        }
    }

    /**
     * Clear all data in the namespace $nsKey if it exists.
     *
     * @param string $nsKey
     */
    public function clearAll($nsKey)
    {
        if (isset($this->_keys[$nsKey])) {
            foreach ($this->_keys[$nsKey] as $itemKey => $null) {
                $this->clearKey($nsKey, $itemKey);
            }

            if (is_dir($this->_path . '/' . $nsKey)) {
                rmdir($this->_path . '/' . $nsKey);
            }

            unset($this->_keys[$nsKey]);
        }
    }

    /**
     * Initialize the namespace of $nsKey if needed.
     *
     * @param string $nsKey
     */
    private function _prepareCache($nsKey)
    {
        $cacheDir = $this->_path . '/' . $nsKey;
        if (!is_dir($cacheDir)) {
            if (!mkdir($cacheDir)) {
                throw new Swift_IoException('Failed to create cache directory ' . $cacheDir);
            }
            $this->_keys[$nsKey] = array();
        }
    }

    /**
     * Get a file handle on the cache item.
     *
     * @param string $nsKey
     * @param string $itemKey
     * @param int    $position
     *
     * @return resource
     */
    private function _getHandle($nsKey, $itemKey, $position)
    {
        $position = (int)$position;

        if (!isset($this->_keys[$nsKey][$itemKey])) {
            $openMode = $this->hasKey($nsKey, $itemKey) ? 'r+b' : 'w+b';
            $fp = fopen($this->_path . '/' . $nsKey . '/' . $itemKey, $openMode);
            $this->_keys[$nsKey][$itemKey] = $fp;
        }

        if (self::POSITION_START === $position) {
            fseek($this->_keys[$nsKey][$itemKey], 0, SEEK_SET);
        } elseif (self::POSITION_END === $position) {
            fseek($this->_keys[$nsKey][$itemKey], 0, SEEK_END);
        }

        return $this->_keys[$nsKey][$itemKey];
    }

    /**
     * @param string $nsKey
     * @param string $itemKey
     */
    private function _freeHandle($nsKey, $itemKey)
    {
        $fp = $this->_getHandle($nsKey, $itemKey, self::POSITION_CURRENT);
        fclose($fp);
        $this->_keys[$nsKey][$itemKey] = null;
    }

    /**
     * Destructor.
     */
    public function __destruct()
    {
        foreach ($this->_keys as $nsKey => $null) {
            $this->clearAll($nsKey);
        }
    }
}


1			<?php
2
3			/*
4			* This file is part of SwiftMailer.
5			* (c) 2004-2009 Chris Corbyn
6			*
7			* For the full copyright and license information, please view the LICENSE
8			* file that was distributed with this source code.
9			*/
10
11			/**
12			* A KeyCache which streams to and from disk.
13			*
14			* @author Chris Corbyn
15			*/
16			class Swift_KeyCache_DiskKeyCache implements Swift_KeyCache
			0 ignored issues – show Coding Style Compatibility introduced 2015-11-22 11:38 UTC by Report Bug Copy Issue Report PSR1 recommends that each class must be in a namespace of at least one level to avoid collisions. You can fix this by adding a namespace to your class: namespace YourVendor; class YourClass { } When choosing a vendor namespace, try to pick something that is not too generic to avoid conflicts with other libraries. Loading history...
17			{
18			/** Signal to place pointer at start of file */
19			const POSITION_START = 0;
20
21			/** Signal to place pointer at end of file */
22			const POSITION_END = 1;
23
24			/** Signal to leave pointer in whatever position it currently is */
25			const POSITION_CURRENT = 2;
26
27			/**
28			* An InputStream for cloning.
29			*
30			* @var Swift_KeyCache_KeyCacheInputStream
31			*/
32			private $_stream;
33
34			/**
35			* A path to write to.
36			*
37			* @var string
38			*/
39			private $_path;
40
41			/**
42			* Stored keys.
43			*
44			* @var array
45			*/
46			private $_keys = array();
47
48			/**
49			* Will be true if magic_quotes_runtime is turned on.
50			*
51			* @var bool
52			*/
53			private $_quotes = false;
54
55			/**
56			* Create a new DiskKeyCache with the given $stream for cloning to make
57			* InputByteStreams, and the given $path to save to.
58			*
59			* @param Swift_KeyCache_KeyCacheInputStream $stream
60			* @param string $path to save to
61			*/
62	14		public function __construct(Swift_KeyCache_KeyCacheInputStream $stream, $path)
63			{
64	14		$this->_stream = $stream;
65	14		$this->_path = $path;
66
67	14		if (function_exists('get_magic_quotes_runtime') && @get_magic_quotes_runtime() === 1) {
68			$this->_quotes = true;
69			}
70	14		}
71
72			/**
73			* Set a string into the cache under $itemKey for the namespace $nsKey.
74			*
75			* @see MODE_WRITE, MODE_APPEND
76			*
77			* @param string $nsKey
78			* @param string $itemKey
79			* @param string $string
80			* @param int $mode
81			*
82			* @throws Swift_IoException
83			* @throws Swift_SwiftException
84			*/
85	78		public function setString($nsKey, $itemKey, $string, $mode)
86			{
87	78		$this->_prepareCache($nsKey);
88
89		View Code Duplication	switch ($mode) {
			0 ignored issues – show Duplication introduced 2015-11-22 11:38 UTC by Report Bug Copy Issue Report 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. Loading history...
90	78		case self::MODE_WRITE:
91	62		$fp = $this->_getHandle($nsKey, $itemKey, self::POSITION_START);
92	62		break;
93	20		case self::MODE_APPEND:
94	20		$fp = $this->_getHandle($nsKey, $itemKey, self::POSITION_END);
95	20		break;
96			default:
97			throw new Swift_SwiftException(
98			'Invalid mode [' . $mode . '] used to set nsKey=' .
99			$nsKey . ', itemKey=' . $itemKey
100			);
101			break;
			0 ignored issues – show Unused Code introduced 2015-11-22 11:38 UTC by Report Bug Copy Issue Report `break;` does not seem to be reachable. This check looks for unreachable code. It uses sophisticated control flow analysis techniques to find statements which will never be executed. Unreachable code is most often the result of `return`, `die` or `exit` statements that have been added for debug purposes. function fx() { try { doSomething(); return true; } catch (\Exception $e) { return false; } return false; } In the above example, the last `return false` will never be executed, because a return statement has already been met in every possible execution path. Loading history...
102			}
103
104	78		fwrite($fp, $string);
105	78		$this->_freeHandle($nsKey, $itemKey);
106	78		}
107
108			/**
109			* Set a ByteStream into the cache under $itemKey for the namespace $nsKey.
110			*
111			* @see MODE_WRITE, MODE_APPEND
112			*
113			* @param string $nsKey
114			* @param string $itemKey
115			* @param Swift_OutputByteStream $os
116			* @param int $mode
117			*
118			* @throws Swift_IoException
119			*/
120	3		public function importFromByteStream($nsKey, $itemKey, Swift_OutputByteStream $os, $mode)
121			{
122	3		$this->_prepareCache($nsKey);
123		View Code Duplication	switch ($mode) {
			0 ignored issues – show Duplication introduced 2015-11-22 11:38 UTC by Report Bug Copy Issue Report 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. Loading history...
124	3		case self::MODE_WRITE:
125	1		$fp = $this->_getHandle($nsKey, $itemKey, self::POSITION_START);
126	1		break;
127	2		case self::MODE_APPEND:
128	2		$fp = $this->_getHandle($nsKey, $itemKey, self::POSITION_END);
129	2		break;
130			default:
131			throw new Swift_SwiftException(
132			'Invalid mode [' . $mode . '] used to set nsKey=' .
133			$nsKey . ', itemKey=' . $itemKey
134			);
135			break;
			0 ignored issues – show Unused Code introduced 2015-11-22 11:38 UTC by Report Bug Copy Issue Report `break;` does not seem to be reachable. This check looks for unreachable code. It uses sophisticated control flow analysis techniques to find statements which will never be executed. Unreachable code is most often the result of `return`, `die` or `exit` statements that have been added for debug purposes. function fx() { try { doSomething(); return true; } catch (\Exception $e) { return false; } return false; } In the above example, the last `return false` will never be executed, because a return statement has already been met in every possible execution path. Loading history...
136			}
137
138	3		while (false !== $bytes = $os->read(8192)) {
139	3		fwrite($fp, $bytes);
140	3		}
141
142	3		$this->_freeHandle($nsKey, $itemKey);
143	3		}
144
145			/**
146			* Provides a ByteStream which when written to, writes data to $itemKey.
147			*
148			* NOTE: The stream will always write in append mode.
149			*
150			* @param string $nsKey
151			* @param string $itemKey
152			* @param Swift_InputByteStream $writeThrough
153			*
154			* @return Swift_InputByteStream
155			*/
156	18	View Code Duplication	public function getInputByteStream($nsKey, $itemKey, Swift_InputByteStream $writeThrough = null)
			0 ignored issues – show Duplication introduced 2017-09-21 08:11 UTC by Report Bug Copy Issue Report This method seems to be duplicated in 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. Loading history...
157			{
158	18		$is = clone $this->_stream;
159
160	18		$is->setKeyCache($this);
161	18		$is->setNsKey($nsKey);
162	18		$is->setItemKey($itemKey);
163
164	18		if (isset($writeThrough)) {
165			$is->setWriteThroughStream($writeThrough);
166			}
167
168	18		return $is;
169			}
170
171			/**
172			* Get data back out of the cache as a string.
173			*
174			* @param string $nsKey
175			* @param string $itemKey
176			*
177			* @throws Swift_IoException
178			*
179			* @return string
180			*/
181	11		public function getString($nsKey, $itemKey)
182			{
183	11		$this->_prepareCache($nsKey);
184	11	View Code Duplication	if ($this->hasKey($nsKey, $itemKey)) {
			0 ignored issues – show Duplication introduced 2015-11-22 11:38 UTC by Report Bug Copy Issue Report 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. Loading history...
185	11		$fp = $this->_getHandle($nsKey, $itemKey, self::POSITION_START);
186	11		if ($this->_quotes) {
187			ini_set('magic_quotes_runtime', 0);
188			}
189
190	11		$str = '';
191	11		while (!feof($fp) && false !== $bytes = fread($fp, 8192)) {
192	11		$str .= $bytes;
193	11		}
194
195	11		if ($this->_quotes) {
196			ini_set('magic_quotes_runtime', 1);
197			}
198
199	11		$this->_freeHandle($nsKey, $itemKey);
200
201	11		return $str;
202			}
203			}
204
205			/**
206			* Get data back out of the cache as a ByteStream.
207			*
208			* @param string $nsKey
209			* @param string $itemKey
210			* @param Swift_InputByteStream $is to write the data to
211			*/
212	4		public function exportToByteStream($nsKey, $itemKey, Swift_InputByteStream $is)
213			{
214	4	View Code Duplication	if ($this->hasKey($nsKey, $itemKey)) {
			0 ignored issues – show Duplication introduced 2015-11-22 11:38 UTC by Report Bug Copy Issue Report 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. Loading history...
215	4		$fp = $this->_getHandle($nsKey, $itemKey, self::POSITION_START);
216
217	4		if ($this->_quotes) {
218			ini_set('magic_quotes_runtime', 0);
219			}
220
221	4		while (!feof($fp) && false !== $bytes = fread($fp, 8192)) {
222	4		$is->write($bytes);
223	4		}
224
225	4		if ($this->_quotes) {
226			ini_set('magic_quotes_runtime', 1);
227			}
228
229	4		$this->_freeHandle($nsKey, $itemKey);
230	4		}
231	4		}
232
233			/**
234			* Check if the given $itemKey exists in the namespace $nsKey.
235			*
236			* @param string $nsKey
237			* @param string $itemKey
238			*
239			* @return bool
240			*/
241	175		public function hasKey($nsKey, $itemKey)
242			{
243	175		return is_file($this->_path . '/' . $nsKey . '/' . $itemKey);
244			}
245
246			/**
247			* Clear data for $itemKey in the namespace $nsKey if it exists.
248			*
249			* @param string $nsKey
250			* @param string $itemKey
251			*/
252	164		public function clearKey($nsKey, $itemKey)
253			{
254	164		if ($this->hasKey($nsKey, $itemKey)) {
255	69		$this->_freeHandle($nsKey, $itemKey);
256	69		unlink($this->_path . '/' . $nsKey . '/' . $itemKey);
257	69		}
258	164		}
259
260			/**
261			* Clear all data in the namespace $nsKey if it exists.
262			*
263			* @param string $nsKey
264			*/
265	161		public function clearAll($nsKey)
266			{
267	161		if (isset($this->_keys[$nsKey])) {
268	67		foreach ($this->_keys[$nsKey] as $itemKey => $null) {
269	67		$this->clearKey($nsKey, $itemKey);
270	67		}
271
272	67		if (is_dir($this->_path . '/' . $nsKey)) {
273	67		rmdir($this->_path . '/' . $nsKey);
274	67		}
275
276	67		unset($this->_keys[$nsKey]);
277	67		}
278	161		}
279
280			/**
281			* Initialize the namespace of $nsKey if needed.
282			*
283			* @param string $nsKey
284			*/
285	80		private function _prepareCache($nsKey)
286			{
287	80		$cacheDir = $this->_path . '/' . $nsKey;
288	80		if (!is_dir($cacheDir)) {
289	80		if (!mkdir($cacheDir)) {
290			throw new Swift_IoException('Failed to create cache directory ' . $cacheDir);
291			}
292	80		$this->_keys[$nsKey] = array();
293	80		}
294	80		}
295
296			/**
297			* Get a file handle on the cache item.
298			*
299			* @param string $nsKey
300			* @param string $itemKey
301			* @param int $position
302			*
303			* @return resource
304			*/
305	80		private function _getHandle($nsKey, $itemKey, $position)
306			{
307	80		$position = (int)$position;
308
309	80		if (!isset($this->_keys[$nsKey][$itemKey])) {
310	80		$openMode = $this->hasKey($nsKey, $itemKey) ? 'r+b' : 'w+b';
311	80		$fp = fopen($this->_path . '/' . $nsKey . '/' . $itemKey, $openMode);
312	80		$this->_keys[$nsKey][$itemKey] = $fp;
313	80		}
314
315	80		if (self::POSITION_START === $position) {
316	69		fseek($this->_keys[$nsKey][$itemKey], 0, SEEK_SET);
317	80		} elseif (self::POSITION_END === $position) {
318	21		fseek($this->_keys[$nsKey][$itemKey], 0, SEEK_END);
319	21		}
320
321	80		return $this->_keys[$nsKey][$itemKey];
322			}
323
324			/**
325			* @param string $nsKey
326			* @param string $itemKey
327			*/
328	80		private function _freeHandle($nsKey, $itemKey)
329			{
330	80		$fp = $this->_getHandle($nsKey, $itemKey, self::POSITION_CURRENT);
331	80		fclose($fp);
332	80		$this->_keys[$nsKey][$itemKey] = null;
333	80		}
334
335			/**
336			* Destructor.
337			*/
338			public function __destruct()
339			{
340			foreach ($this->_keys as $nsKey => $null) {
341			$this->clearAll($nsKey);
342			}
343			}
344			}
345

voku / swiftmailer

Swift_KeyCache_DiskKeyCache::_freeHandle() A last analyzed 2017-12-05 09:25 UTC

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Swift_KeyCache_DiskKeyCache::_freeHandle() A
last analyzed 2017-12-05 09:25 UTC