FileRangeProcessor::getRangeHeader() - Code Metrics - Inspection of "添加：链式调用" - dxkite/suda - Measure and Improve Code Quality continuously with Scrutinizer

Passed

Push — dev ( 72eb07...9b7706 )

by 世昌

created 2019-09-13 02:24 UTC

FileRangeProcessor::getRangeHeader() A

↳ Parent: FileRangeProcessor

Complexity

Conditions	1
Paths	1

Size

Total Lines	3
Code Lines	1

Duplication

Lines	0
Ratio	0 %

Importance

Changes

Metric	Value
cc	1
eloc	1
nc	1
nop	1
dl	0
loc	3
rs	10
c	0
b	0
f	0

<?php

namespace suda\application\processor;

use Exception;
use SplFileObject;
use suda\framework\Request;
use suda\framework\Response;
use suda\application\Application;
use suda\framework\response\MimeType;
use suda\framework\http\stream\DataStream;

/**
 * 响应
 */
class FileRangeProcessor implements RequestProcessor
{
    /**
     * 文件路径
     *
     * @var SplFileObject
     */
    protected $file;

    /**
     * MIME
     *
     * @var string
     */
    protected $mime;

    public function __construct($file)
    {
        $this->file = $file instanceof SplFileObject ? $file : new SplFileObject($file);
        $this->mime = MimeType::getMimeType($this->file->getExtension());
    }

    /**
     * 处理文件请求
     *
     * @param Application $application
     * @param Request $request
     * @param Response $response
     * @return void
     * @throws Exception
     */
    public function onRequest(Application $application, Request $request, Response $response)
    {
        $ranges = $this->getRanges($request);
        $response->setHeader('accept-ranges', 'bytes');
        if ($request->getMethod() !== 'GET' || $ranges === false) {
            $response->status(400);
        } else {
            $this->sendFileRanges($response, $ranges);
        }
    }

    /**
     * @param Response $response
     * @param array $ranges
     * @throws Exception
     */
    protected function sendFileRanges(Response $response, array $ranges)
    {
        if (count($ranges) === 0) {
            $response->setHeader('content-type', $this->mime);
            $response->sendFile($this->file->getRealPath());
        } elseif (count($ranges) === 1) {
            $response->status(206);
            $range = $ranges[0];
            $response->setHeader('content-type', $this->mime);
            $response->setHeader('content-range', $this->getRangeHeader($range));
            $this->sendFileByRange($response, $range);
        } else {
            $response->status(206);
            $this->sendMultipleFileByRange($response, $ranges);
        }
    }

    /**
     * 发送多Range
     *
     * @param Response $response
     * @param array $ranges
     * @return void
     */
    protected function sendMultipleFileByRange(Response $response, array $ranges)
    {
        $separates = 'multiple_range_' . base64_encode(md5(uniqid(), true));
        $response->setHeader('content-type', 'multipart/byteranges; boundary=' . $separates);
        foreach ($ranges as $range) {
            $response->write('--' . $separates . "\r\n");
            $this->sendMultipleRangePart($response, $range);
            $this->sendFileByRange($response, $range);
            $response->write("\r\n");
        }
    }


    /**
     * 发送范围数据
     *
     * @param Response $response
     * @param array $range
     * @return void
     */
    protected function sendFileByRange(Response $response, array $range)
    {
        // [start,end] = $end - $start + 1
        $response->write(new DataStream($this->file, $range['start'], $range['end'] - $range['start'] + 1));
    }

    /**
     * 获取Range描述
     * @param Request $request
     * @return array|bool
     */
    protected function getRanges(Request $request)
    {
        $ranges = $this->parseRangeHeader($request);
        if (count($ranges) > 0) {
            return $this->parseRanges($ranges);
        }
        return [];
    }

    /**
     * 写Range头
     *
     * @param Response $response
     * @param array $range
     * @return void
     */
    protected function sendMultipleRangePart(Response $response, array $range)
    {
        $response->write('Content-Type: ' . $this->mime . "\r\n");
        $response->write('Content-Range: ' . $this->getRangeHeader($range) . "\r\n\r\n");
    }

    /**
     * 生成Range头
     *
     * @param array $range
     * @return string
     */
    protected function getRangeHeader(array $range): string
    {
        return sprintf('bytes %d-%d/%d', $range['start'], $range['end'], $this->file->getSize());
    }

    /**
     * 获取Range描述
     * @param Request $request
     * @return array
     */
    protected function parseRangeHeader(Request $request)
    {
        $range = $request->getHeader('range', null);
        $range = trim($range);
        if (strpos($range, 'bytes=') === 0) {
            $rangesFrom = substr($range, strlen('bytes='));
            return explode(',', $rangesFrom);
        }
        return [];
    }

    /**
     * 处理范围
     *
     * @param array $ranges
     * @return array|bool
     */
    protected function parseRanges(array $ranges)
    {
        $range = [];
        foreach ($ranges as $value) {
            if (($r = $this->parseRange($value)) !== null) {
                $range[] = $r;
            } else {
                return false;
            }
        }
        return $range;
    }

    /**
     * 处理Range
     * @param string $range
     * @return array|null
     */
    protected function parseRange(string $range): ?array
    {
        $range = trim($range);
        if (strrpos($range, '-') === strlen($range) - 1) {
            return [
                'start' => intval(rtrim($range, '-')),
                'end' => $this->file->getSize() - 1,
            ];
        } elseif (strpos($range, '-') !== false) {
            list($start, $end) = explode('-', $range, 2);
            $length = intval($end - $start);
            if ($length <= 0) {
                return ['start' => intval($start), 'end' => $this->file->getSize() - 1];
            }
            return ['start' => intval($start), 'end' => intval($end)];
        }
        return null;
    }
}


1			<?php
2
3			namespace suda\application\processor;
4
5			use Exception;
6			use SplFileObject;
7			use suda\framework\Request;
8			use suda\framework\Response;
9			use suda\application\Application;
10			use suda\framework\response\MimeType;
11			use suda\framework\http\stream\DataStream;
12
13			/**
14			* 响应
15			*/
16			class FileRangeProcessor implements RequestProcessor
17			{
18			/**
19			* 文件路径
20			*
21			* @var SplFileObject
22			*/
23			protected $file;
24
25			/**
26			* MIME
27			*
28			* @var string
29			*/
30			protected $mime;
31
32			public function __construct($file)
33			{
34			$this->file = $file instanceof SplFileObject ? $file : new SplFileObject($file);
35			$this->mime = MimeType::getMimeType($this->file->getExtension());
36			}
37
38			/**
39			* 处理文件请求
40			*
41			* @param Application $application
42			* @param Request $request
43			* @param Response $response
44			* @return void
45			* @throws Exception
46			*/
47			public function onRequest(Application $application, Request $request, Response $response)
48			{
49			$ranges = $this->getRanges($request);
50			$response->setHeader('accept-ranges', 'bytes');
51			if ($request->getMethod() !== 'GET' \|\| $ranges === false) {
52			$response->status(400);
53			} else {
54			$this->sendFileRanges($response, $ranges);
55			}
56			}
57
58			/**
59			* @param Response $response
60			* @param array $ranges
61			* @throws Exception
62			*/
63			protected function sendFileRanges(Response $response, array $ranges)
64			{
65			if (count($ranges) === 0) {
66			$response->setHeader('content-type', $this->mime);
67			$response->sendFile($this->file->getRealPath());
68			} elseif (count($ranges) === 1) {
69			$response->status(206);
70			$range = $ranges[0];
71			$response->setHeader('content-type', $this->mime);
72			$response->setHeader('content-range', $this->getRangeHeader($range));
73			$this->sendFileByRange($response, $range);
74			} else {
75			$response->status(206);
76			$this->sendMultipleFileByRange($response, $ranges);
77			}
78			}
79
80			/**
81			* 发送多Range
82			*
83			* @param Response $response
84			* @param array $ranges
85			* @return void
86			*/
87			protected function sendMultipleFileByRange(Response $response, array $ranges)
88			{
89			$separates = 'multiple_range_' . base64_encode(md5(uniqid(), true));
90			$response->setHeader('content-type', 'multipart/byteranges; boundary=' . $separates);
91			foreach ($ranges as $range) {
92			$response->write('--' . $separates . "\r\n");
93			$this->sendMultipleRangePart($response, $range);
94			$this->sendFileByRange($response, $range);
95			$response->write("\r\n");
96			}
97			}
98
99
100			/**
101			* 发送范围数据
102			*
103			* @param Response $response
104			* @param array $range
105			* @return void
106			*/
107			protected function sendFileByRange(Response $response, array $range)
108			{
109			// [start,end] = $end - $start + 1
110			$response->write(new DataStream($this->file, $range['start'], $range['end'] - $range['start'] + 1));
111			}
112
113			/**
114			* 获取Range描述
115			* @param Request $request
116			* @return array\|bool
117			*/
118			protected function getRanges(Request $request)
119			{
120			$ranges = $this->parseRangeHeader($request);
121			if (count($ranges) > 0) {
122			return $this->parseRanges($ranges);
123			}
124			return [];
125			}
126
127			/**
128			* 写Range头
129			*
130			* @param Response $response
131			* @param array $range
132			* @return void
133			*/
134			protected function sendMultipleRangePart(Response $response, array $range)
135			{
136			$response->write('Content-Type: ' . $this->mime . "\r\n");
137			$response->write('Content-Range: ' . $this->getRangeHeader($range) . "\r\n\r\n");
138			}
139
140			/**
141			* 生成Range头
142			*
143			* @param array $range
144			* @return string
145			*/
146			protected function getRangeHeader(array $range): string
147			{
148			return sprintf('bytes %d-%d/%d', $range['start'], $range['end'], $this->file->getSize());
149			}
150
151			/**
152			* 获取Range描述
153			* @param Request $request
154			* @return array
155			*/
156			protected function parseRangeHeader(Request $request)
157			{
158			$range = $request->getHeader('range', null);
159			$range = trim($range);
160			if (strpos($range, 'bytes=') === 0) {
161			$rangesFrom = substr($range, strlen('bytes='));
162			return explode(',', $rangesFrom);
163			}
164			return [];
165			}
166
167			/**
168			* 处理范围
169			*
170			* @param array $ranges
171			* @return array\|bool
172			*/
173			protected function parseRanges(array $ranges)
174			{
175			$range = [];
176			foreach ($ranges as $value) {
177			if (($r = $this->parseRange($value)) !== null) {
178			$range[] = $r;
179			} else {
180			return false;
181			}
182			}
183			return $range;
184			}
185
186			/**
187			* 处理Range
188			* @param string $range
189			* @return array\|null
190			*/
191			protected function parseRange(string $range): ?array
192			{
193			$range = trim($range);
194			if (strrpos($range, '-') === strlen($range) - 1) {
195			return [
196			'start' => intval(rtrim($range, '-')),
197			'end' => $this->file->getSize() - 1,
198			];
199			} elseif (strpos($range, '-') !== false) {
200			list($start, $end) = explode('-', $range, 2);
201			$length = intval($end - $start);
202			if ($length <= 0) {
203			return ['start' => intval($start), 'end' => $this->file->getSize() - 1];
204			}
205			return ['start' => intval($start), 'end' => intval($end)];
206			}
207			return null;
208			}
209			}
210

dxkite / suda

Push — dev ( 72eb07...9b7706 )

FileRangeProcessor::getRangeHeader() A

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