FileReader::setPosition() - Code Metrics - Inspection of "Remove extra space" - mlocati/chm-lib - Measure and Improve Code Quality continuously with Scrutinizer

Completed

Push — master ( 94c184...82d741 )

by Michele

created 2016-05-05 16:04 UTC

FileReader::setPosition() A

↳ Parent: FileReader

Complexity

Conditions	2
Paths	2

Size

Total Lines	6
Code Lines	3

Duplication

Lines	0
Ratio	0 %

Code Coverage

Tests	3
CRAP Score	2.0625

Importance

Changes	1
Bugs	0	Features	0

Metric	Value
c	1
b	0
f	0
dl	0
loc	6
ccs	3
cts	4
cp	0.75
rs	9.4285
cc	2
eloc	3
nc	2
nop	1
crap	2.0625

<?php

namespace CHMLib\Reader;

use Exception;

/**
 * Read data from a file.
 */
class FileReader extends Reader
{
    /**
     * The file name.
     *
     * @var string
     */
    protected $filename;

    /**
     * The file size.
     *
     * @var int
     */
    protected $length;

    /**
     * The open file descriptor.
     *
     * @var resource
     */
    protected $fd;

    /**
     * Initializes the instance.
     *
     * @param string $filename The file name to be read.
     *
     * @throws Exception Throws an Exception in case of errors.
     */
    public function __construct($filename)
    {
        $this->filename = $filename;
        if (!is_file($this->filename)) {
            throw new Exception('File not found: '.$this->filename);
        }
        if (!is_readable($this->filename)) {
            throw new Exception('File not readable: '.$this->filename);
        }
        $this->length = @filesize($this->filename);
        if ($this->length === false || $this->length < 0) {
            throw new Exception('Failed to retrieve the size of the file '.$this->filename);
        }
        $this->fd = @fopen($this->filename, 'rb');
        if ($this->fd === false) {
            $this->fd = null;
            throw new Exception('Failed to open file '.$this->filename);
        }
    }

    /**
     * Destruct the instance.
     */
    public function __destruct()
    {
        if (isset($this->fd)) {
            @fclose($this->fd);
// For example instead of
@mkdir($dir);

// Better use
if (@mkdir($dir) === false) {
    throw new \RuntimeException('The directory '.$dir.' could not be created.');
}
            $this->fd = null;
        }
    }

    /**
     * {@inheritdoc}
     *
     * @see Reader::setPosition()
     */
    public function setPosition($position)
    {
        if (@fseek($this->fd, $position, SEEK_SET) !== 0) {
            throw new Exception('Failed to seek file to to position '.$position);
        }
    }

    /**
     * {@inheritdoc}
     *
     * @see Reader::getPosition()
     */
    public function getPosition()
    {
        $result = @ftell($this->fd);
        if ($result === false) {
            throw new Exception('Failed to get the current file position');
        }

        return $result;
    }

    /**
     * {@inheritdoc}
     *
     * @see Reader::getLength()
     */
    public function getLength()
    {
        return $this->length;
    }

    /**
     * {@inheritdoc}
     *
     * @see Reader::readString()
     */
    public function readString($length)
    {
        if ($length === 0) {
            $result = '';
        } else {
            $result = @fread($this->fd, $length);
            if ($result === false || strlen($result) !== $length) {
                throw new Exception('Read after end-of-file');
            }
        }

        return $result;
    }
}


1		<?php
2
3		namespace CHMLib\Reader;
4
5		use Exception;
6
7		/**
8		* Read data from a file.
9		*/
10		class FileReader extends Reader
11		{
12		/**
13		* The file name.
14		*
15		* @var string
16		*/
17		protected $filename;
18
19		/**
20		* The file size.
21		*
22		* @var int
23		*/
24		protected $length;
25
26		/**
27		* The open file descriptor.
28		*
29		* @var resource
30		*/
31		protected $fd;
32
33		/**
34		* Initializes the instance.
35		*
36		* @param string $filename The file name to be read.
37		*
38		* @throws Exception Throws an Exception in case of errors.
39		*/
40	4	public function __construct($filename)
41		{
42	4	$this->filename = $filename;
43	4	if (!is_file($this->filename)) {
44		throw new Exception('File not found: '.$this->filename);
45		}
46	4	if (!is_readable($this->filename)) {
47		throw new Exception('File not readable: '.$this->filename);
48		}
49	4	$this->length = @filesize($this->filename);
50	4	if ($this->length === false \|\| $this->length < 0) {
51		throw new Exception('Failed to retrieve the size of the file '.$this->filename);
52		}
53	4	$this->fd = @fopen($this->filename, 'rb');
54	4	if ($this->fd === false) {
55		$this->fd = null;
56		throw new Exception('Failed to open file '.$this->filename);
57		}
58	4	}
59
60		/**
61		* Destruct the instance.
62		*/
63		public function __destruct()
64		{
65		if (isset($this->fd)) {
66		@fclose($this->fd);
		0 ignored issues – show Security Best Practice introduced 2016-05-04 14:16 UTC by Report Bug Copy Issue Report It seems like you do not handle an error condition here. This can introduce security issues, and is generally not recommended. If you suppress an error, we recommend checking for the error condition explicitly: // For example instead of @mkdir($dir); // Better use if (@mkdir($dir) === false) { throw new \RuntimeException('The directory '.$dir.' could not be created.'); } Loading history...
67		$this->fd = null;
68		}
69		}
70
71		/**
72		* {@inheritdoc}
73		*
74		* @see Reader::setPosition()
75		*/
76	29	public function setPosition($position)
77		{
78	29	if (@fseek($this->fd, $position, SEEK_SET) !== 0) {
79		throw new Exception('Failed to seek file to to position '.$position);
80		}
81	29	}
82
83		/**
84		* {@inheritdoc}
85		*
86		* @see Reader::getPosition()
87		*/
88	4	public function getPosition()
89		{
90	4	$result = @ftell($this->fd);
91	4	if ($result === false) {
92		throw new Exception('Failed to get the current file position');
93		}
94
95	4	return $result;
96		}
97
98		/**
99		* {@inheritdoc}
100		*
101		* @see Reader::getLength()
102		*/
103	4	public function getLength()
104		{
105	4	return $this->length;
106		}
107
108		/**
109		* {@inheritdoc}
110		*
111		* @see Reader::readString()
112		*/
113	29	public function readString($length)
114		{
115	29	if ($length === 0) {
116		$result = '';
117		} else {
118	29	$result = @fread($this->fd, $length);
119	29	if ($result === false \|\| strlen($result) !== $length) {
120		throw new Exception('Read after end-of-file');
121		}
122		}
123
124	29	return $result;
125		}
126		}
127

mlocati / chm-lib

Push — master ( 94c184...82d741 )

FileReader::setPosition() A

Complexity

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