AbstractCrawler::parseImage() - Code Metrics - Inspection of "Added method to generate auth url" - core23/lastfm-php-api - Measure and Improve Code Quality continuously with Scrutinizer

Completed

Push — master ( c9bd98...b01a3a )

by Christian

created 2017-01-07 17:12 UTC

AbstractCrawler::parseImage() A

↳ Parent: AbstractCrawler

Complexity

Conditions	1
Paths	1

Size

Total Lines	4
Code Lines	2

Duplication

Lines	0
Ratio	0 %

Importance

Changes

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

<?php

/*
 * This file is part of the ni-ju-san CMS.
 *
 * (c) Christian Gripp <[email protected]>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Core23\LastFm\Crawler;

use Core23\LastFm\Connection\ConnectionInterface;
use Symfony\Component\DomCrawler\Crawler;

abstract class AbstractCrawler
{
    const URL_PREFIX = 'http://last.fm';

    /**
     * @var ConnectionInterface
     */
    protected $connection;

    /**
     * AbstractService constructor.
     *
     * @param ConnectionInterface $connection
     */
    public function __construct(ConnectionInterface $connection)
    {
        $this->connection = $connection;
    }

    /**
     * Crawles a url.
     *
     * @param string $url
     *
     * @return Crawler
     */
    final protected function crawl($url)
    {
        $content = $this->connection->loadPage($url);

        return new Crawler($content);
    }

    /**
     * Parses a url node.
     *
     * @param Crawler $node
     * @param string  $attr
     *
     * @return null|string
     */
    final protected function parseUrl(Crawler $node, $attr = 'href')
    {
        if ($node == null || $node->count() === 0) {
            return;
        }

        if ($url = $node->attr($attr)) {
            return preg_replace('/^\//', static::URL_PREFIX.'/', $url);
        }

        return;
    }

    /**
     * Parses an image node.
     *
     * @param Crawler $node
     *
     * @return null|string
     */
    final protected function parseImage(Crawler $node)
    {
        return $this->parseUrl($node, 'src');
    }

    /**
     * Parses a string node.
     *
     * @param Crawler $node
     *
     * @param bool    $multiline
     *
     * @return null|string
     */
    final protected function parseString(Crawler $node, $multiline = false)
    {
        if ($node == null || $node->count() === 0) {
            return;
        }

        $content = $node->attr('content');

        if (!$content) {
''   == false // true
''   == null  // true
'ab' == false // false
'ab' == null  // false

// It is often better to use strict comparison
'' === false // false
'' === null  // false
            if ($multiline) {
                $content = strip_tags($node->html());
            } else {
                $content = $node->text();
            }
        }

        return trim($content);
    }

    /**
     * Parses a date note.
     *
     * @param Crawler $node
     *
     * @return \DateTime|null
     */
    final protected function parseDate(Crawler $node)
    {
        $content = $this->parseString($node);

        if ($content) {
''   == false // true
''   == null  // true
'ab' == false // false
'ab' == null  // false

// It is often better to use strict comparison
'' === false // false
'' === null  // false
            return new \DateTime($content);
        }

        return;
    }
}


1			<?php
2
3			/*
4			* This file is part of the ni-ju-san CMS.
5			*
6			* (c) Christian Gripp <[email protected]>
7			*
8			* For the full copyright and license information, please view the LICENSE
9			* file that was distributed with this source code.
10			*/
11
12			namespace Core23\LastFm\Crawler;
13
14			use Core23\LastFm\Connection\ConnectionInterface;
15			use Symfony\Component\DomCrawler\Crawler;
16
17			abstract class AbstractCrawler
18			{
19			const URL_PREFIX = 'http://last.fm';
20
21			/**
22			* @var ConnectionInterface
23			*/
24			protected $connection;
25
26			/**
27			* AbstractService constructor.
28			*
29			* @param ConnectionInterface $connection
30			*/
31			public function __construct(ConnectionInterface $connection)
32			{
33			$this->connection = $connection;
34			}
35
36			/**
37			* Crawles a url.
38			*
39			* @param string $url
40			*
41			* @return Crawler
42			*/
43			final protected function crawl($url)
44			{
45			$content = $this->connection->loadPage($url);
46
47			return new Crawler($content);
48			}
49
50			/**
51			* Parses a url node.
52			*
53			* @param Crawler $node
54			* @param string $attr
55			*
56			* @return null\|string
57			*/
58			final protected function parseUrl(Crawler $node, $attr = 'href')
59			{
60			if ($node == null \|\| $node->count() === 0) {
61			return;
62			}
63
64			if ($url = $node->attr($attr)) {
65			return preg_replace('/^\//', static::URL_PREFIX.'/', $url);
66			}
67
68			return;
69			}
70
71			/**
72			* Parses an image node.
73			*
74			* @param Crawler $node
75			*
76			* @return null\|string
77			*/
78			final protected function parseImage(Crawler $node)
79			{
80			return $this->parseUrl($node, 'src');
81			}
82
83			/**
84			* Parses a string node.
85			*
86			* @param Crawler $node
87			*
88			* @param bool $multiline
89			*
90			* @return null\|string
91			*/
92			final protected function parseString(Crawler $node, $multiline = false)
93			{
94			if ($node == null \|\| $node->count() === 0) {
95			return;
96			}
97
98			$content = $node->attr('content');
99
100			if (!$content) {
			0 ignored issues – show Bug Best Practice introduced 2017-01-05 05:09 UTC by Report Bug Copy Issue Report The expression `$content` of type `string\|null` is loosely compared to `false`; this is ambiguous if the string can be empty. You might want to explicitly use `=== null` instead. In PHP, under loose comparison (like `==`, or `!=`, or `switch` conditions), values of different types might be equal. For `string` values, the empty string `''` is a special case, in particular the following results might be unexpected: '' == false // true '' == null // true 'ab' == false // false 'ab' == null // false // It is often better to use strict comparison '' === false // false '' === null // false Loading history...
101			if ($multiline) {
102			$content = strip_tags($node->html());
103			} else {
104			$content = $node->text();
105			}
106			}
107
108			return trim($content);
109			}
110
111			/**
112			* Parses a date note.
113			*
114			* @param Crawler $node
115			*
116			* @return \DateTime\|null
117			*/
118			final protected function parseDate(Crawler $node)
119			{
120			$content = $this->parseString($node);
121
122			if ($content) {
			0 ignored issues – show Bug Best Practice introduced 2017-01-05 05:09 UTC by Report Bug Copy Issue Report The expression `$content` of type `null\|string` is loosely compared to `true`; this is ambiguous if the string can be empty. You might want to explicitly use `!== null` instead. In PHP, under loose comparison (like `==`, or `!=`, or `switch` conditions), values of different types might be equal. For `string` values, the empty string `''` is a special case, in particular the following results might be unexpected: '' == false // true '' == null // true 'ab' == false // false 'ab' == null // false // It is often better to use strict comparison '' === false // false '' === null // false Loading history...
123			return new \DateTime($content);
124			}
125
126			return;
127			}
128			}
129

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AbstractCrawler::parseImage() A

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