InputStream::isMarkSupported() - Code Metrics - Inspection of "InputStream系クラス追加(未テスト)" - webstream-framework/WebStream - Measure and Improve Code Quality continuously with Scrutinizer

Completed

Push — feature/0.7.0 ( c0c2ef...83eb72 )

by Ryuichi

created 2016-02-07 13:23 UTC

InputStream::isMarkSupported() A

↳ Parent: InputStream

Complexity

Conditions	1
Paths	1

Size

Total Lines	4
Code Lines	2

Duplication

Lines	0
Ratio	0 %

Importance

Changes	1
Bugs	0	Features	0

Metric	Value
c	1
b	0
f	0
dl	0
loc	4
rs	10
cc	1
eloc	2
nc	1
nop	0

<?php
namespace WebStream\IO;

use WebStream\Exception\Extend\IOException;
use WebStream\Exception\Extend\InvalidArgumentException;

/**
 * InputStream
 * @author Ryuichi TANAKA.
 * @since 2016/02/05
 * @version 0.7
 */
class InputStream
{
    /**
     * @var resource 入力ストリーム
     */
    protected $stream;

    /**
     * @var int 現在のポインタ位置
     */
    protected $cursorPosition;

    /**
     * @var int markしたポインタ位置
     */
    protected $markedPosition;

    /**
     * constructor
     * @param resource $stream 入力ストリーム
     */
    public function __construct($stream)
    {
        if (!is_resource($stream)) {
            throw new IOException("Input stream must be type of Resource.");
        }

        $this->stream = $stream;
        $this->cursorPosition = 0;
        $this->markedPosition = 0;
    }

    /**
     * destructor
     */
    public function __destruct()
    {
        $this->close();
    }

    /**
     * 入力ストリームを閉じる
     */
    public function close()
    {
        if ($this->stream === null) {
            return;
        }

        if (@flose($this->stream) === false) {

            throw new IOException("Cannot close " . $this->file->getAbsoluteFilePath() . " cause by " . $php_errormsg);
class MyClass { }

$x = new MyClass();
$x->foo = true;
        }

        $this->stream = null;
    }

    /**
     * 入力ストリームからデータを読み込む
     * 引数に数値を指定した場合、指定数値バイトだけ読み込む
     * @param int length 読み込みバイト数
     * @return string 読み込みデータ
     * @throws InvalidArgumentException
     */
    public function read($length = null)
    {
        if ($this->eof()) {
            return -1;
        }

        $out = "";
        if ($length === null) {
            while (!$this->eof()) {
                // InputStreamでは固定値でしか読み込ませない
                $out .= fread($this->stream, 8192);
                $this->cursorPosition = ftell($this->stream);
            }
        } else {
            if (!is_int($length)) {
                throw new InvalidArgumentException("Stream read must be a numeric value.");
            }

            // $lengthだけ指定して読み込む
            $out = fread($this->stream, $length);
            $this->cursorPosition = ftell($this->stream);
        }

        return $out;
    }

    /**
     * 入力ストリームから指定バイト数後方へポインタを移動する
     * @param int $pos 後方への移動バイト数(負数の場合は前方へ移動)
     * @return int $skipNum 移動したバイト数、移動に失敗した場合-1
     */
    public function skip(int $pos)
    {
        // 現在のポインタ位置から$posだけ後方へ移動
        // シークに対応していないファイルシステムの場合、-1を返す
        if (fseek($this->stream, $pos, SEEK_CUR) === -1) {
            return -1;
        }

        $start = $this->cursorPosition;
        $this->cursorPosition = ftell($this->stream);

        $skipNum = 0;
$myVar = 'Value';
$higher = false;

if (rand(1, 6) > 3) {
    $higher = true;
} else {
    $higher = false;
}
        if ($start > $this->cursorPosition) {

            // 前方へ移動
            $skipNum = $start - $this->cursorPosition;
        } else {
            // 後方へ移動
            $skipNum = $this->cursorPosition - $start;
        }

        return $skipNum;
    }

    /**
     * 入力ストリームの現在位置にmarkを設定する
     * @throws IOException
     */
    public function mark()
    {
        if (!$this->isMarkSupported()) {
            throw new IOException(get_class($this) . " does not support mark.");
        }

        $this->markedPosition = $this->cursorPosition;
    }

    /**
     * 最後にmarkされた位置に再配置する
     * @throws IOException
     */
    public function reset()
    {
        if (!$this->isMarkSupported()) {
            throw new IOException(get_class($this) . " does not support mark and reset.");
        }

        // ポインタ位置をmark位置に移動
        fseek($this->stream, SEEK_SET, $this->markedPosition);
        // mark位置を初期値に戻す
        $this->markedPosition = 0;
    }

    /**
     * EOFかどうか返却する
     * @return bool EOFならtrue
     */
    public function eof()
    {
        return feof($this->stream);
    }

    /**
     * mark機能をサポートしているかどうか
     * @return boolean マークをサポートしていればtrue
     */
    public function isMarkSupported()
    {
        return false;
    }
}


1		<?php
2		namespace WebStream\IO;
3
4		use WebStream\Exception\Extend\IOException;
5		use WebStream\Exception\Extend\InvalidArgumentException;
6
7		/**
8		* InputStream
9		* @author Ryuichi TANAKA.
10		* @since 2016/02/05
11		* @version 0.7
12		*/
13		class InputStream
14		{
15		/**
16		* @var resource 入力ストリーム
17		*/
18		protected $stream;
19
20		/**
21		* @var int 現在のポインタ位置
22		*/
23		protected $cursorPosition;
24
25		/**
26		* @var int markしたポインタ位置
27		*/
28		protected $markedPosition;
29
30		/**
31		* constructor
32		* @param resource $stream 入力ストリーム
33		*/
34		public function __construct($stream)
35		{
36		if (!is_resource($stream)) {
37		throw new IOException("Input stream must be type of Resource.");
38		}
39
40		$this->stream = $stream;
41		$this->cursorPosition = 0;
42		$this->markedPosition = 0;
43		}
44
45		/**
46		* destructor
47		*/
48		public function __destruct()
49		{
50		$this->close();
51		}
52
53		/**
54		* 入力ストリームを閉じる
55		*/
56		public function close()
57		{
58		if ($this->stream === null) {
59		return;
60		}
61
62	View Code Duplication	if (@flose($this->stream) === false) {
		0 ignored issues – show Duplication introduced 2016-02-07 13:26 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...
63		throw new IOException("Cannot close " . $this->file->getAbsoluteFilePath() . " cause by " . $php_errormsg);
		0 ignored issues – show Bug introduced 2016-02-07 13:26 UTC by Report Bug Copy Issue Report The property `file` does not exist. Did you maybe forget to declare it? In PHP it is possible to write to properties without declaring them. For example, the following is perfectly valid PHP code: class MyClass { } $x = new MyClass(); $x->foo = true; Generally, it is a good practice to explictly declare properties to avoid accidental typos and provide IDE auto-completion: class MyClass { public $foo; } $x = new MyClass(); $x->foo = true; Loading history...
64		}
65
66		$this->stream = null;
67		}
68
69		/**
70		* 入力ストリームからデータを読み込む
71		* 引数に数値を指定した場合、指定数値バイトだけ読み込む
72		* @param int length 読み込みバイト数
73		* @return string 読み込みデータ
74		* @throws InvalidArgumentException
75		*/
76		public function read($length = null)
77		{
78		if ($this->eof()) {
79		return -1;
80		}
81
82		$out = "";
83		if ($length === null) {
84		while (!$this->eof()) {
85		// InputStreamでは固定値でしか読み込ませない
86		$out .= fread($this->stream, 8192);
87		$this->cursorPosition = ftell($this->stream);
88		}
89		} else {
90		if (!is_int($length)) {
91		throw new InvalidArgumentException("Stream read must be a numeric value.");
92		}
93
94		// $lengthだけ指定して読み込む
95		$out = fread($this->stream, $length);
96		$this->cursorPosition = ftell($this->stream);
97		}
98
99		return $out;
100		}
101
102		/**
103		* 入力ストリームから指定バイト数後方へポインタを移動する
104		* @param int $pos 後方への移動バイト数(負数の場合は前方へ移動)
105		* @return int $skipNum 移動したバイト数、移動に失敗した場合-1
106		*/
107		public function skip(int $pos)
108		{
109		// 現在のポインタ位置から$posだけ後方へ移動
110		// シークに対応していないファイルシステムの場合、-1を返す
111		if (fseek($this->stream, $pos, SEEK_CUR) === -1) {
112		return -1;
113		}
114
115		$start = $this->cursorPosition;
116		$this->cursorPosition = ftell($this->stream);
117
118		$skipNum = 0;
		0 ignored issues – show Unused Code introduced 2016-02-07 13:26 UTC by Report Bug Copy Issue Report `$skipNum` is not used, you could remove the assignment. This check looks for variable assignements that are either overwritten by other assignments or where the variable is not used subsequently. $myVar = 'Value'; $higher = false; if (rand(1, 6) > 3) { $higher = true; } else { $higher = false; } Both the `$myVar` assignment in line 1 and the `$higher` assignment in line 2 are dead. The first because `$myVar` is never used and the second because `$higher` is always overwritten for every possible time line. Loading history...
119	View Code Duplication	if ($start > $this->cursorPosition) {
		0 ignored issues – show Duplication introduced 2016-02-07 13:26 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...
120		// 前方へ移動
121		$skipNum = $start - $this->cursorPosition;
122		} else {
123		// 後方へ移動
124		$skipNum = $this->cursorPosition - $start;
125		}
126
127		return $skipNum;
128		}
129
130		/**
131		* 入力ストリームの現在位置にmarkを設定する
132		* @throws IOException
133		*/
134		public function mark()
135		{
136		if (!$this->isMarkSupported()) {
137		throw new IOException(get_class($this) . " does not support mark.");
138		}
139
140		$this->markedPosition = $this->cursorPosition;
141		}
142
143		/**
144		* 最後にmarkされた位置に再配置する
145		* @throws IOException
146		*/
147		public function reset()
148		{
149		if (!$this->isMarkSupported()) {
150		throw new IOException(get_class($this) . " does not support mark and reset.");
151		}
152
153		// ポインタ位置をmark位置に移動
154		fseek($this->stream, SEEK_SET, $this->markedPosition);
155		// mark位置を初期値に戻す
156		$this->markedPosition = 0;
157		}
158
159		/**
160		* EOFかどうか返却する
161		* @return bool EOFならtrue
162		*/
163		public function eof()
164		{
165		return feof($this->stream);
166		}
167
168		/**
169		* mark機能をサポートしているかどうか
170		* @return boolean マークをサポートしていればtrue
171		*/
172		public function isMarkSupported()
173		{
174		return false;
175		}
176		}
177

webstream-framework / WebStream

Push — feature/0.7.0 ( c0c2ef...83eb72 )

InputStream::isMarkSupported() A

Complexity

Size

Duplication

Importance

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