|
1
|
|
|
<?php |
|
2
|
|
|
|
|
3
|
|
|
namespace FileEye\MimeMap; |
|
4
|
|
|
|
|
5
|
|
|
/** |
|
6
|
|
|
* Class for parsing RFC 2045 Content-Type Header Fields. |
|
7
|
|
|
*/ |
|
8
|
|
|
class TypeParser |
|
9
|
|
|
{ |
|
10
|
|
|
/** |
|
11
|
|
|
* Parse a mime-type and set the class variables. |
|
12
|
|
|
* |
|
13
|
|
|
* @param string $type_string |
|
14
|
|
|
* MIME type string to parse. |
|
15
|
|
|
* @param Type $type |
|
16
|
|
|
* The Type object to receive the components. |
|
17
|
|
|
* |
|
18
|
|
|
* @return void |
|
19
|
|
|
*/ |
|
20
|
61 |
|
public static function parse($type_string, Type $type) |
|
21
|
|
|
{ |
|
22
|
61 |
|
if (is_null($type_string)) { |
|
|
|
|
|
|
23
|
1 |
|
return; |
|
24
|
|
|
} |
|
25
|
|
|
|
|
26
|
|
|
// Media and SubType are separated by a slash '/'. |
|
27
|
60 |
|
$media = static::parseStringPart($type_string, 0, '/'); |
|
28
|
|
|
|
|
29
|
59 |
|
if (!$media['string']) { |
|
30
|
2 |
|
throw new MalformedTypeException('Media type not found'); |
|
31
|
|
|
} |
|
32
|
57 |
|
if (!$media['delimiter_matched']) { |
|
33
|
1 |
|
throw new MalformedTypeException('Slash \'/\' to separate media type and subtype not found'); |
|
34
|
|
|
} |
|
35
|
|
|
|
|
36
|
56 |
|
$type->setMedia(strtolower($media['string'])); |
|
|
|
|
|
|
37
|
56 |
|
$type->setMediaComment($media['comment']); |
|
38
|
|
|
|
|
39
|
|
|
// SubType and Parameters are separated by semicolons ';'. |
|
40
|
56 |
|
$sub = static::parseStringPart($type_string, $media['end_offset'] + 1, ';'); |
|
41
|
|
|
|
|
42
|
55 |
|
if (!$sub['string']) { |
|
43
|
1 |
|
throw new MalformedTypeException('Media subtype not found'); |
|
44
|
|
|
} |
|
45
|
|
|
|
|
46
|
54 |
|
$type->setSubType(strtolower($sub['string'])); |
|
47
|
54 |
|
$type->setSubTypeComment($sub['comment']); |
|
48
|
|
|
|
|
49
|
|
|
// Loops through the parameter. |
|
50
|
54 |
|
while ($sub['delimiter_matched']) { |
|
51
|
27 |
|
$sub = static::parseStringPart($type_string, $sub['end_offset'] + 1, ';'); |
|
52
|
27 |
|
$tmp = explode('=', $sub['string'], 2); |
|
53
|
27 |
|
$p_name = trim($tmp[0]); |
|
54
|
27 |
|
$p_val = trim($tmp[1]); |
|
55
|
27 |
|
$p_val = str_replace('\\"', '"', $p_val); |
|
56
|
27 |
|
$type->addParameter($p_name, $p_val, $sub['comment']); |
|
57
|
|
|
} |
|
58
|
54 |
|
} |
|
59
|
|
|
|
|
60
|
|
|
/** |
|
61
|
|
|
* Parses a part of the content MIME type string. |
|
62
|
|
|
* |
|
63
|
|
|
* Splits string and comment until a delimiter is found. |
|
64
|
|
|
* |
|
65
|
|
|
* @param string $string |
|
66
|
|
|
* Input string. |
|
67
|
|
|
* @param int $offset |
|
68
|
|
|
* Offset to start parsing from. |
|
69
|
|
|
* @param string $delimiter |
|
70
|
|
|
* Stop parsing when delimiter found. |
|
71
|
|
|
* |
|
72
|
|
|
* @return array |
|
73
|
|
|
* An array with the following keys: |
|
74
|
|
|
* 'string' - the uncommented part of $string |
|
75
|
|
|
* 'comment' - the comment part of $string |
|
76
|
|
|
* 'delimiter_matched' - true if a $delimiter stopped the parsing, false |
|
77
|
|
|
* otherwise |
|
78
|
|
|
* 'end_offset' - the last position parsed in $string. |
|
79
|
|
|
*/ |
|
80
|
60 |
|
public static function parseStringPart($string, $offset, $delimiter) |
|
81
|
|
|
{ |
|
82
|
60 |
|
$inquote = false; |
|
83
|
60 |
|
$escaped = false; |
|
84
|
60 |
|
$incomment = 0; |
|
85
|
60 |
|
$newstring = ''; |
|
86
|
60 |
|
$comment = ''; |
|
87
|
|
|
|
|
88
|
60 |
|
for ($n = $offset; $n < strlen($string); $n++) { |
|
89
|
59 |
|
if ($string[$n] === $delimiter && !$escaped && !$inquote && $incomment === 0) { |
|
90
|
57 |
|
break; |
|
91
|
|
|
} |
|
92
|
|
|
|
|
93
|
58 |
|
if ($escaped) { |
|
94
|
4 |
|
if ($incomment == 0) { |
|
95
|
2 |
|
$newstring .= $string[$n]; |
|
96
|
|
|
} else { |
|
97
|
2 |
|
$comment .= $string[$n]; |
|
98
|
|
|
} |
|
99
|
4 |
|
$escaped = false; |
|
100
|
4 |
|
continue; |
|
101
|
|
|
} |
|
102
|
|
|
|
|
103
|
58 |
|
if ($string[$n] == '\\') { |
|
104
|
4 |
|
if ($incomment > 0) { |
|
105
|
2 |
|
$comment .= $string[$n]; |
|
106
|
|
|
} |
|
107
|
4 |
|
$escaped = true; |
|
108
|
4 |
|
continue; |
|
109
|
|
|
} |
|
110
|
|
|
|
|
111
|
58 |
|
if (!$inquote && $incomment > 0 && $string[$n] == ')') { |
|
112
|
21 |
|
$incomment--; |
|
113
|
21 |
|
if ($incomment == 0) { |
|
114
|
19 |
|
$comment .= ' '; |
|
115
|
|
|
} |
|
116
|
21 |
|
continue; |
|
117
|
|
|
} |
|
118
|
|
|
|
|
119
|
58 |
|
if (!$inquote && $string[$n] == '(') { |
|
120
|
21 |
|
$incomment++; |
|
121
|
21 |
|
continue; |
|
122
|
|
|
} |
|
123
|
|
|
|
|
124
|
58 |
|
if ($string[$n] == '"') { |
|
125
|
10 |
|
if ($incomment > 0) { |
|
126
|
1 |
|
$comment .= $string[$n]; |
|
127
|
|
|
} else { |
|
128
|
9 |
|
if ($inquote) { |
|
129
|
9 |
|
$inquote = false; |
|
130
|
|
|
} else { |
|
131
|
9 |
|
$inquote = true; |
|
132
|
|
|
} |
|
133
|
|
|
} |
|
134
|
10 |
|
continue; |
|
135
|
|
|
} |
|
136
|
|
|
|
|
137
|
58 |
|
if ($incomment == 0) { |
|
138
|
58 |
|
$newstring .= $string[$n]; |
|
139
|
58 |
|
continue; |
|
140
|
|
|
} |
|
141
|
|
|
|
|
142
|
21 |
|
$comment .= $string[$n]; |
|
143
|
|
|
} |
|
144
|
|
|
|
|
145
|
60 |
|
if ($incomment > 0) { |
|
146
|
2 |
|
throw new MalformedTypeException('Comment closing bracket missing: ' . $comment); |
|
147
|
|
|
} |
|
148
|
|
|
|
|
149
|
|
|
return [ |
|
150
|
59 |
|
'string' => empty($newstring) ? null : trim($newstring), |
|
|
|
|
|
|
151
|
59 |
|
'comment' => empty($comment) ? null : trim($comment), |
|
|
|
|
|
|
152
|
59 |
|
'delimiter_matched' => isset($string[$n]) ? ($string[$n] === $delimiter) : false, |
|
153
|
59 |
|
'end_offset' => $n, |
|
154
|
|
|
]; |
|
155
|
|
|
} |
|
156
|
|
|
} |
|
157
|
|
|
|
FileEye /
MimeMap
Loading history...