|
1
|
|
|
<?php |
|
2
|
|
|
/** |
|
3
|
|
|
* vipnytt/RobotsTxtParser |
|
4
|
|
|
* |
|
5
|
|
|
* @link https://github.com/VIPnytt/RobotsTxtParser |
|
6
|
|
|
* @license https://github.com/VIPnytt/RobotsTxtParser/blob/master/LICENSE The MIT License (MIT) |
|
7
|
|
|
*/ |
|
8
|
|
|
|
|
9
|
|
|
namespace vipnytt\RobotsTxtParser\Handler; |
|
10
|
|
|
|
|
11
|
|
|
use vipnytt\RobotsTxtParser\Exceptions\ClientException; |
|
12
|
|
|
use vipnytt\RobotsTxtParser\RobotsTxtInterface; |
|
13
|
|
|
|
|
14
|
|
|
/** |
|
15
|
|
|
* Class RenderHandler |
|
16
|
|
|
* |
|
17
|
|
|
* @package vipnytt\RobotsTxtParser\Handler |
|
18
|
|
|
*/ |
|
19
|
|
|
class RenderHandler implements RobotsTxtInterface |
|
20
|
|
|
{ |
|
21
|
|
|
/** |
|
22
|
|
|
* Render level |
|
23
|
|
|
* @var int |
|
24
|
|
|
*/ |
|
25
|
|
|
private $level; |
|
26
|
|
|
|
|
27
|
|
|
/** |
|
28
|
|
|
* Line separator |
|
29
|
|
|
* @var string |
|
30
|
|
|
*/ |
|
31
|
|
|
private $eol; |
|
32
|
|
|
|
|
33
|
|
|
/** |
|
34
|
|
|
* Rule strings |
|
35
|
|
|
* @var string[] |
|
36
|
|
|
*/ |
|
37
|
|
|
private $strings = []; |
|
38
|
|
|
|
|
39
|
|
|
/** |
|
40
|
|
|
* Current directive |
|
41
|
|
|
* @var string |
|
42
|
|
|
*/ |
|
43
|
|
|
private $directive; |
|
44
|
|
|
|
|
45
|
|
|
/** |
|
46
|
|
|
* Previous directive |
|
47
|
|
|
* @var string |
|
48
|
|
|
*/ |
|
49
|
|
|
private $previous; |
|
50
|
|
|
|
|
51
|
|
|
/** |
|
52
|
|
|
* Previous root level directive |
|
53
|
|
|
* @var string |
|
54
|
|
|
*/ |
|
55
|
|
|
private $previousRoot; |
|
56
|
|
|
|
|
57
|
|
|
/** |
|
58
|
|
|
* RenderHandler constructor. |
|
59
|
|
|
* |
|
60
|
|
|
* @param int $level |
|
61
|
|
|
* @param string $lineSeparator |
|
62
|
|
|
*/ |
|
63
|
|
|
public function __construct($level, $lineSeparator = "\r\n") |
|
64
|
|
|
{ |
|
65
|
|
|
$this->level = $level; |
|
66
|
|
|
$this->separatorCheck($lineSeparator); |
|
67
|
|
|
} |
|
68
|
|
|
|
|
69
|
|
|
/** |
|
70
|
|
|
* Line separator check |
|
71
|
|
|
* |
|
72
|
|
|
* @param string $eol |
|
73
|
|
|
* @throws ClientException |
|
74
|
|
|
*/ |
|
75
|
|
|
private function separatorCheck($eol) |
|
76
|
|
|
{ |
|
77
|
|
|
if (!in_array($eol, [ |
|
78
|
|
|
"\r\n", |
|
79
|
|
|
"\n", |
|
80
|
|
|
"\r", |
|
81
|
|
|
]) |
|
82
|
|
|
) { |
|
83
|
|
|
throw new ClientException('Invalid line separator'); |
|
84
|
|
|
} |
|
85
|
|
|
$this->eol = $eol; |
|
86
|
|
|
} |
|
87
|
|
|
|
|
88
|
|
|
/** |
|
89
|
|
|
* Get mode |
|
90
|
|
|
* |
|
91
|
|
|
* @return int |
|
92
|
|
|
*/ |
|
93
|
|
|
public function getLevel() |
|
94
|
|
|
{ |
|
95
|
|
|
return $this->level; |
|
96
|
|
|
} |
|
97
|
|
|
|
|
98
|
|
|
/** |
|
99
|
|
|
* Implode |
|
100
|
|
|
* |
|
101
|
|
|
* @param string $directive |
|
102
|
|
|
* @param RenderHandler $handler |
|
103
|
|
|
* @return bool |
|
104
|
|
|
*/ |
|
105
|
|
|
public function addInline($directive, RenderHandler $handler) |
|
106
|
|
|
{ |
|
107
|
|
|
$lines = array_map('trim', $handler->export()); |
|
108
|
|
|
foreach ($lines as $line) { |
|
109
|
|
|
$this->add($directive, $line); |
|
110
|
|
|
} |
|
111
|
|
|
return true; |
|
112
|
|
|
} |
|
113
|
|
|
|
|
114
|
|
|
/** |
|
115
|
|
|
* Export |
|
116
|
|
|
* |
|
117
|
|
|
* @return string[] |
|
118
|
|
|
*/ |
|
119
|
|
|
public function export() |
|
120
|
|
|
{ |
|
121
|
|
|
return $this->strings; |
|
122
|
|
|
} |
|
123
|
|
|
|
|
124
|
|
|
/** |
|
125
|
|
|
* Add line |
|
126
|
|
|
* |
|
127
|
|
|
* @param string $directive |
|
128
|
|
|
* @param string $line |
|
129
|
|
|
* @return bool |
|
130
|
|
|
*/ |
|
131
|
|
|
public function add($directive, $line) |
|
132
|
|
|
{ |
|
133
|
|
|
$this->previous = $this->directive; |
|
134
|
|
|
$this->directive = $directive; |
|
135
|
|
|
if ($this->level >= 2) { |
|
136
|
|
|
$this->strings[] = $this->advanced() . $line; |
|
137
|
|
|
return true; |
|
138
|
|
|
} |
|
139
|
|
|
$this->strings[] = $this->basic() . $line; |
|
140
|
|
|
return true; |
|
141
|
|
|
} |
|
142
|
|
|
|
|
143
|
|
|
/** |
|
144
|
|
|
* Advanced beautifier |
|
145
|
|
|
* |
|
146
|
|
|
* @return string |
|
147
|
|
|
*/ |
|
148
|
|
|
private function advanced() |
|
149
|
|
|
{ |
|
150
|
|
|
$result = ''; |
|
151
|
|
|
if ($this->boolInsertSeparatorLevel3() || |
|
152
|
|
|
$this->previous !== self::DIRECTIVE_USER_AGENT && |
|
153
|
|
|
$this->directive === self::DIRECTIVE_USER_AGENT |
|
154
|
|
|
) { |
|
155
|
|
|
$result = $this->eol; |
|
156
|
|
|
$this->previousRoot = $this->directive; |
|
157
|
|
|
} |
|
158
|
|
|
$result .= $this->basic(); |
|
159
|
|
|
return $result; |
|
160
|
|
|
} |
|
161
|
|
|
|
|
162
|
|
|
/** |
|
163
|
|
|
* Should insert line separator? requires mode 3 |
|
164
|
|
|
* |
|
165
|
|
|
* @return bool |
|
166
|
|
|
*/ |
|
167
|
|
|
private function boolInsertSeparatorLevel3() |
|
168
|
|
|
{ |
|
169
|
|
|
return $this->level >= 3 && |
|
170
|
|
|
$this->previousRoot !== $this->directive && |
|
171
|
|
|
in_array($this->directive, [ |
|
172
|
|
|
self::DIRECTIVE_HOST, |
|
173
|
|
|
self::DIRECTIVE_CLEAN_PARAM, |
|
174
|
|
|
self::DIRECTIVE_SITEMAP, |
|
175
|
|
|
]); |
|
176
|
|
|
} |
|
177
|
|
|
|
|
178
|
|
|
/** |
|
179
|
|
|
* Basic beautifier |
|
180
|
|
|
* |
|
181
|
|
|
* @return string |
|
182
|
|
|
*/ |
|
183
|
|
|
private function basic() |
|
184
|
|
|
{ |
|
185
|
|
|
$result = $this->directive . ':'; |
|
186
|
|
|
if ($this->level === 0) { |
|
187
|
|
|
return $result; |
|
188
|
|
|
} |
|
189
|
|
|
return ucfirst($result) . ' '; |
|
190
|
|
|
} |
|
191
|
|
|
|
|
192
|
|
|
/** |
|
193
|
|
|
* Generate robots.txt |
|
194
|
|
|
* |
|
195
|
|
|
* @return string |
|
196
|
|
|
*/ |
|
197
|
|
|
public function generate() |
|
198
|
|
|
{ |
|
199
|
|
|
return trim(implode($this->eol, $this->strings)); |
|
200
|
|
|
} |
|
201
|
|
|
} |
|
202
|
|
|
|
VIPnytt /
RobotsTxtParser
