|
1
|
|
|
<?php |
|
2
|
|
|
|
|
3
|
|
|
namespace League\HTMLToMarkdown\Converter; |
|
4
|
|
|
|
|
5
|
|
|
use League\HTMLToMarkdown\Configuration; |
|
6
|
|
|
use League\HTMLToMarkdown\ConfigurationAwareInterface; |
|
7
|
|
|
use League\HTMLToMarkdown\ElementInterface; |
|
8
|
|
|
|
|
9
|
|
|
class LinkConverter implements ConverterInterface, ConfigurationAwareInterface |
|
10
|
|
|
{ |
|
11
|
|
|
/** |
|
12
|
|
|
* @var Configuration |
|
13
|
|
|
*/ |
|
14
|
|
|
protected $config; |
|
15
|
|
|
|
|
16
|
|
|
/** |
|
17
|
|
|
* @param Configuration $config |
|
18
|
|
|
*/ |
|
19
|
99 |
|
public function setConfig(Configuration $config) { |
|
20
|
99 |
|
$this->config = $config; |
|
21
|
99 |
|
} |
|
22
|
|
|
|
|
23
|
|
|
/** |
|
24
|
|
|
* @param ElementInterface $element |
|
25
|
|
|
* |
|
26
|
|
|
* @return string |
|
27
|
|
|
*/ |
|
28
|
9 |
|
public function convert(ElementInterface $element) |
|
29
|
|
|
{ |
|
30
|
9 |
|
$href = $element->getAttribute('href'); |
|
31
|
9 |
|
$title = $element->getAttribute('title'); |
|
32
|
9 |
|
$text = trim($element->getValue(), "\t\n\r\0\x0B"); |
|
33
|
|
|
|
|
34
|
9 |
|
if ($title !== '') { |
|
35
|
3 |
|
$markdown = '[' . $text . '](' . $href . ' "' . $title . '")'; |
|
36
|
9 |
|
} elseif ($href === $text && $this->isValidAutolink($href)) { |
|
37
|
3 |
|
$markdown = '<' . $href . '>'; |
|
38
|
9 |
|
} elseif ($href === 'mailto:' . $text && $this->isValidEmail($text)) { |
|
39
|
3 |
|
$markdown = '<' . $text . '>'; |
|
40
|
2 |
|
} else { |
|
41
|
9 |
|
if (stristr($href, ' ')) { |
|
42
|
|
|
$href = '<'.$href.'>'; |
|
43
|
|
|
} |
|
44
|
9 |
|
$markdown = '[' . $text . '](' . $href . ')'; |
|
45
|
|
|
} |
|
46
|
|
|
|
|
47
|
9 |
|
if (!$href) { |
|
48
|
3 |
|
if ($this->shouldStrip()) { |
|
49
|
3 |
|
$markdown = $text; |
|
50
|
2 |
|
} else { |
|
51
|
3 |
|
$markdown = html_entity_decode($element->getChildrenAsString()); |
|
52
|
|
|
} |
|
53
|
2 |
|
} |
|
54
|
|
|
|
|
55
|
9 |
|
return $markdown; |
|
56
|
|
|
} |
|
57
|
|
|
|
|
58
|
|
|
/** |
|
59
|
|
|
* @return string[] |
|
60
|
|
|
*/ |
|
61
|
99 |
|
public function getSupportedTags() |
|
62
|
|
|
{ |
|
63
|
99 |
|
return array('a'); |
|
64
|
|
|
} |
|
65
|
|
|
|
|
66
|
|
|
/** |
|
67
|
|
|
* @param string $href |
|
68
|
|
|
* |
|
69
|
|
|
* @return bool |
|
70
|
|
|
*/ |
|
71
|
6 |
|
private function isValidAutolink($href) |
|
72
|
|
|
{ |
|
73
|
6 |
|
$useAutolinks = $this->config->getOption('use_autolinks'); |
|
74
|
6 |
|
return $useAutolinks && (preg_match('/^[A-Za-z][A-Za-z0-9.+-]{1,31}:[^<>\x00-\x20]*/i', $href) === 1); |
|
75
|
|
|
} |
|
76
|
|
|
|
|
77
|
|
|
/** |
|
78
|
|
|
* @param string $email |
|
79
|
|
|
* |
|
80
|
|
|
* @return bool |
|
81
|
|
|
*/ |
|
82
|
3 |
|
private function isValidEmail($email) |
|
83
|
|
|
{ |
|
84
|
|
|
// Email validation is messy business, but this should cover most cases |
|
85
|
3 |
|
return filter_var($email, FILTER_VALIDATE_EMAIL); |
|
86
|
|
|
} |
|
87
|
|
|
|
|
88
|
|
|
/** |
|
89
|
|
|
* @return bool |
|
90
|
|
|
*/ |
|
91
|
3 |
|
private function shouldStrip() |
|
92
|
|
|
{ |
|
93
|
3 |
|
return $this->config->getOption('strip_placeholder_links'); |
|
94
|
|
|
} |
|
95
|
|
|
} |
|
96
|
|
|
|
thephpleague /
html-to-markdown
