FileHandler::truncate() - Code Metrics - michael-donat/php-vfs - Measure and Improve Code Quality continuously with Scrutinizer

FileHandler::truncate() A
last analyzed 2017-12-20 20:56 UTC

↳ Parent: FileHandler

Complexity

Conditions	2
Paths	2

Size

Total Lines	11
Code Lines	8

Duplication

Lines	0
Ratio	0 %

Code Coverage

Tests	0
CRAP Score	6

Importance

Changes

Metric	Value
dl	0
loc	11
ccs	0
cts	10
cp	0
rs	9.4285
c	0
b	0
f	0
cc	2
eloc	8
nc	2
nop	1
crap	6

<?php
/*
 * This file is part of the php-vfs package.
 *
 * (c) Michael Donat <[email protected]>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace VirtualFileSystem\Wrapper;

use VirtualFileSystem\Structure\File;

/**
 * User as file handle by streamWrapper implementation.
 *
 * This class is responsible mainly for managing the pointer position during reading and writing.
 *
 * @author Michael Donat <[email protected]>
 * @package php-vfs
 */
class FileHandler
{
    const READ_MODE     = 1;
    const WRITE_MODE    = 2;

    protected $position = 0;

    protected $mode = 0;

    /**
     * @var File
     */
    protected $file;

    /**
     * Sets file in context.
     *
     * @param File $file
     */
    public function setFile(File $file)
    {
        $this->file = $file;
    }

    /**
     * Returns file in context.
     *
     * @return File
     */
    public function getFile() {
        return $this->file;
    }

    /**
     * Writes data to file. Will return the number of bytes written. Will advance pointer by number of bytes written.
     *
     * @param string $data
     *
     * @return int
     */
    public function write($data)
    {
        $content = $this->file->data();
        $content = substr($content, 0, $this->position());
        $content .= $data;
        $this->file->setData($content);
        $written = strlen($data);
        $this->offsetPosition($written);
        $this->file->setModificationTime(time());
        $this->file->setChangeTime(time());

        return $written;
    }

    /**
     * Will read and return $bytes bytes from file. Will advance pointer by $bytes bytes.
     *
     * @param int $bytes
     *
     * @return string
     */
    public function read($bytes)
    {
        $content = $this->file->data();

        $return = substr($content, $this->position(), $bytes);

        $newPosition = $this->position()+$bytes;

        $newPosition = $newPosition > strlen($content) ? strlen($content) : $newPosition;

        $this->position($newPosition);
        $this->file->setAccessTime(time());

        return $return;
    }

    /**
     * Returns current pointer position.
     *
     * @param integer|null $position
     *
     * @return int
     */
    public function position($position = null)
    {
        return is_null($position) ? $this->position : $this->position = $position;
    }

    /**
     * Moves pointer to the end of file (for append modes).
     *
     * @return int
     */
    public function seekToEnd()
    {
        return $this->position(strlen($this->file->data()));
    }

    /**
     * Offsets position by $offset
     *
     * @param int $offset
     */
    public function offsetPosition($offset)
    {
        $this->position += $offset;
    }

    /**
     * Tells whether pointer is at the end of file.
     *
     * @return bool
     */
    public function atEof()
    {
        return $this->position() >= strlen($this->file->data());
    }

    /**
     * Removed all data from file and sets pointer to 0
     *
     * @param int $newSize
     *
     * @return void
     */
    public function truncate($newSize = 0)
    {
        $this->position(0);
        $newData = substr($this->file->data(), 0, $newSize);
        $newData = false === $newData ? '' : $newData;
        $this->file->setData($newData);
        $this->file->setModificationTime(time());
        $this->file->setChangeTime(time());

        return;
    }

    /**
     * Sets handler to read only
     */
    public function setReadOnlyMode()
    {
        $this->mode = self::READ_MODE;
    }

    /**
     * Sets handler into read/write mode
     */
    public function setReadWriteMode()
    {
        $this->mode = self::READ_MODE | self::WRITE_MODE;
    }

    public function setWriteOnlyMode()
    {
        $this->mode = self::WRITE_MODE;
    }

    /**
     * Checks if pointer allows writing
     *
     * @return bool
     */
    public function isOpenedForWriting()
    {
        return (bool) ($this->mode & self::WRITE_MODE);
    }

    /**
     * Checks if pointer allows reading
     *
     * @return bool
     */
    public function isOpenedForReading()
    {
        return (bool) ($this->mode & self::READ_MODE);
    }

    /**
     * @param  $resource
     */
    public function lock($resource, $operation)
    {
        return $this->file->lock($resource, $operation);
    }
}


1			<?php
2			/*
3			* This file is part of the php-vfs package.
4			*
5			* (c) Michael Donat <[email protected]>
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			namespace VirtualFileSystem\Wrapper;
12
13			use VirtualFileSystem\Structure\File;
14
15			/**
16			* User as file handle by streamWrapper implementation.
17			*
18			* This class is responsible mainly for managing the pointer position during reading and writing.
19			*
20			* @author Michael Donat <[email protected]>
21			* @package php-vfs
22			*/
23			class FileHandler
24			{
25			const READ_MODE = 1;
26			const WRITE_MODE = 2;
27
28			protected $position = 0;
29
30			protected $mode = 0;
31
32			/**
33			* @var File
34			*/
35			protected $file;
36
37			/**
38			* Sets file in context.
39			*
40			* @param File $file
41			*/
42			public function setFile(File $file)
43			{
44			$this->file = $file;
45			}
46
47			/**
48			* Returns file in context.
49			*
50			* @return File
51			*/
52			public function getFile() {
53			return $this->file;
54			}
55
56			/**
57			* Writes data to file. Will return the number of bytes written. Will advance pointer by number of bytes written.
58			*
59			* @param string $data
60			*
61			* @return int
62			*/
63			public function write($data)
64			{
65			$content = $this->file->data();
66			$content = substr($content, 0, $this->position());
67			$content .= $data;
68			$this->file->setData($content);
69			$written = strlen($data);
70			$this->offsetPosition($written);
71			$this->file->setModificationTime(time());
72			$this->file->setChangeTime(time());
73
74			return $written;
75			}
76
77			/**
78			* Will read and return $bytes bytes from file. Will advance pointer by $bytes bytes.
79			*
80			* @param int $bytes
81			*
82			* @return string
83			*/
84			public function read($bytes)
85			{
86			$content = $this->file->data();
87
88			$return = substr($content, $this->position(), $bytes);
89
90			$newPosition = $this->position()+$bytes;
91
92			$newPosition = $newPosition > strlen($content) ? strlen($content) : $newPosition;
93
94			$this->position($newPosition);
95			$this->file->setAccessTime(time());
96
97			return $return;
98			}
99
100			/**
101			* Returns current pointer position.
102			*
103			* @param integer\|null $position
104			*
105			* @return int
106			*/
107			public function position($position = null)
108			{
109			return is_null($position) ? $this->position : $this->position = $position;
110			}
111
112			/**
113			* Moves pointer to the end of file (for append modes).
114			*
115			* @return int
116			*/
117			public function seekToEnd()
118			{
119			return $this->position(strlen($this->file->data()));
120			}
121
122			/**
123			* Offsets position by $offset
124			*
125			* @param int $offset
126			*/
127			public function offsetPosition($offset)
128			{
129			$this->position += $offset;
130			}
131
132			/**
133			* Tells whether pointer is at the end of file.
134			*
135			* @return bool
136			*/
137			public function atEof()
138			{
139			return $this->position() >= strlen($this->file->data());
140			}
141
142			/**
143			* Removed all data from file and sets pointer to 0
144			*
145			* @param int $newSize
146			*
147			* @return void
148			*/
149			public function truncate($newSize = 0)
150			{
151			$this->position(0);
152			$newData = substr($this->file->data(), 0, $newSize);
153			$newData = false === $newData ? '' : $newData;
154			$this->file->setData($newData);
155			$this->file->setModificationTime(time());
156			$this->file->setChangeTime(time());
157
158			return;
159			}
160
161			/**
162			* Sets handler to read only
163			*/
164			public function setReadOnlyMode()
165			{
166			$this->mode = self::READ_MODE;
167			}
168
169			/**
170			* Sets handler into read/write mode
171			*/
172			public function setReadWriteMode()
173			{
174			$this->mode = self::READ_MODE \| self::WRITE_MODE;
175			}
176
177			public function setWriteOnlyMode()
178			{
179			$this->mode = self::WRITE_MODE;
180			}
181
182			/**
183			* Checks if pointer allows writing
184			*
185			* @return bool
186			*/
187			public function isOpenedForWriting()
188			{
189			return (bool) ($this->mode & self::WRITE_MODE);
190			}
191
192			/**
193			* Checks if pointer allows reading
194			*
195			* @return bool
196			*/
197			public function isOpenedForReading()
198			{
199			return (bool) ($this->mode & self::READ_MODE);
200			}
201
202			/**
203			* @param $resource
204			*/
205			public function lock($resource, $operation)
206			{
207			return $this->file->lock($resource, $operation);
208			}
209			}
210

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FileHandler::truncate() A last analyzed 2017-12-20 20:56 UTC

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FileHandler::truncate() A
last analyzed 2017-12-20 20:56 UTC