| 1441 |
ariadna |
1 |
<?php
|
|
|
2 |
|
|
|
3 |
namespace Sabberworm\CSS\Value;
|
|
|
4 |
|
|
|
5 |
use Sabberworm\CSS\Parsing\ParserState;
|
|
|
6 |
use Sabberworm\CSS\Parsing\SourceException;
|
|
|
7 |
use Sabberworm\CSS\Parsing\UnexpectedEOFException;
|
|
|
8 |
use Sabberworm\CSS\Parsing\UnexpectedTokenException;
|
|
|
9 |
use Sabberworm\CSS\Renderable;
|
|
|
10 |
|
|
|
11 |
/**
|
|
|
12 |
* Abstract base class for specific classes of CSS values: `Size`, `Color`, `CSSString` and `URL`, and another
|
|
|
13 |
* abstract subclass `ValueList`.
|
|
|
14 |
*/
|
|
|
15 |
abstract class Value implements Renderable
|
|
|
16 |
{
|
|
|
17 |
/**
|
|
|
18 |
* @var int
|
|
|
19 |
*/
|
|
|
20 |
protected $iLineNo;
|
|
|
21 |
|
|
|
22 |
/**
|
|
|
23 |
* @param int $iLineNo
|
|
|
24 |
*/
|
|
|
25 |
public function __construct($iLineNo = 0)
|
|
|
26 |
{
|
|
|
27 |
$this->iLineNo = $iLineNo;
|
|
|
28 |
}
|
|
|
29 |
|
|
|
30 |
/**
|
|
|
31 |
* @param array<array-key, string> $aListDelimiters
|
|
|
32 |
*
|
|
|
33 |
* @return RuleValueList|CSSFunction|CSSString|LineName|Size|URL|string
|
|
|
34 |
*
|
|
|
35 |
* @throws UnexpectedTokenException
|
|
|
36 |
* @throws UnexpectedEOFException
|
|
|
37 |
*/
|
|
|
38 |
public static function parseValue(ParserState $oParserState, array $aListDelimiters = [])
|
|
|
39 |
{
|
|
|
40 |
/** @var array<int, RuleValueList|CSSFunction|CSSString|LineName|Size|URL|string> $aStack */
|
|
|
41 |
$aStack = [];
|
|
|
42 |
$oParserState->consumeWhiteSpace();
|
|
|
43 |
//Build a list of delimiters and parsed values
|
|
|
44 |
while (
|
|
|
45 |
!($oParserState->comes('}') || $oParserState->comes(';') || $oParserState->comes('!')
|
|
|
46 |
|| $oParserState->comes(')')
|
|
|
47 |
|| $oParserState->comes('\\')
|
|
|
48 |
|| $oParserState->isEnd())
|
|
|
49 |
) {
|
|
|
50 |
if (count($aStack) > 0) {
|
|
|
51 |
$bFoundDelimiter = false;
|
|
|
52 |
foreach ($aListDelimiters as $sDelimiter) {
|
|
|
53 |
if ($oParserState->comes($sDelimiter)) {
|
|
|
54 |
array_push($aStack, $oParserState->consume($sDelimiter));
|
|
|
55 |
$oParserState->consumeWhiteSpace();
|
|
|
56 |
$bFoundDelimiter = true;
|
|
|
57 |
break;
|
|
|
58 |
}
|
|
|
59 |
}
|
|
|
60 |
if (!$bFoundDelimiter) {
|
|
|
61 |
//Whitespace was the list delimiter
|
|
|
62 |
array_push($aStack, ' ');
|
|
|
63 |
}
|
|
|
64 |
}
|
|
|
65 |
array_push($aStack, self::parsePrimitiveValue($oParserState));
|
|
|
66 |
$oParserState->consumeWhiteSpace();
|
|
|
67 |
}
|
|
|
68 |
// Convert the list to list objects
|
|
|
69 |
foreach ($aListDelimiters as $sDelimiter) {
|
|
|
70 |
$iStackLength = count($aStack);
|
|
|
71 |
if ($iStackLength === 1) {
|
|
|
72 |
return $aStack[0];
|
|
|
73 |
}
|
|
|
74 |
$aNewStack = [];
|
|
|
75 |
for ($iStartPosition = 0; $iStartPosition < $iStackLength; ++$iStartPosition) {
|
|
|
76 |
if ($iStartPosition === ($iStackLength - 1) || $sDelimiter !== $aStack[$iStartPosition + 1]) {
|
|
|
77 |
$aNewStack[] = $aStack[$iStartPosition];
|
|
|
78 |
continue;
|
|
|
79 |
}
|
|
|
80 |
$iLength = 2; //Number of elements to be joined
|
|
|
81 |
for ($i = $iStartPosition + 3; $i < $iStackLength; $i += 2, ++$iLength) {
|
|
|
82 |
if ($sDelimiter !== $aStack[$i]) {
|
|
|
83 |
break;
|
|
|
84 |
}
|
|
|
85 |
}
|
|
|
86 |
$oList = new RuleValueList($sDelimiter, $oParserState->currentLine());
|
|
|
87 |
for ($i = $iStartPosition; $i - $iStartPosition < $iLength * 2; $i += 2) {
|
|
|
88 |
$oList->addListComponent($aStack[$i]);
|
|
|
89 |
}
|
|
|
90 |
$aNewStack[] = $oList;
|
|
|
91 |
$iStartPosition += $iLength * 2 - 2;
|
|
|
92 |
}
|
|
|
93 |
$aStack = $aNewStack;
|
|
|
94 |
}
|
|
|
95 |
if (!isset($aStack[0])) {
|
|
|
96 |
throw new UnexpectedTokenException(
|
|
|
97 |
" {$oParserState->peek()} ",
|
|
|
98 |
$oParserState->peek(1, -1) . $oParserState->peek(2),
|
|
|
99 |
'literal',
|
|
|
100 |
$oParserState->currentLine()
|
|
|
101 |
);
|
|
|
102 |
}
|
|
|
103 |
return $aStack[0];
|
|
|
104 |
}
|
|
|
105 |
|
|
|
106 |
/**
|
|
|
107 |
* @param bool $bIgnoreCase
|
|
|
108 |
*
|
|
|
109 |
* @return CSSFunction|string
|
|
|
110 |
*
|
|
|
111 |
* @throws UnexpectedEOFException
|
|
|
112 |
* @throws UnexpectedTokenException
|
|
|
113 |
*/
|
|
|
114 |
public static function parseIdentifierOrFunction(ParserState $oParserState, $bIgnoreCase = false)
|
|
|
115 |
{
|
|
|
116 |
$oAnchor = $oParserState->anchor();
|
|
|
117 |
$mResult = $oParserState->parseIdentifier($bIgnoreCase);
|
|
|
118 |
|
|
|
119 |
if ($oParserState->comes('(')) {
|
|
|
120 |
$oAnchor->backtrack();
|
|
|
121 |
if ($oParserState->streql('url', $mResult)) {
|
|
|
122 |
$mResult = URL::parse($oParserState);
|
|
|
123 |
} elseif (
|
|
|
124 |
$oParserState->streql('calc', $mResult)
|
|
|
125 |
|| $oParserState->streql('-webkit-calc', $mResult)
|
|
|
126 |
|| $oParserState->streql('-moz-calc', $mResult)
|
|
|
127 |
) {
|
|
|
128 |
$mResult = CalcFunction::parse($oParserState);
|
|
|
129 |
} else {
|
|
|
130 |
$mResult = CSSFunction::parse($oParserState, $bIgnoreCase);
|
|
|
131 |
}
|
|
|
132 |
}
|
|
|
133 |
|
|
|
134 |
return $mResult;
|
|
|
135 |
}
|
|
|
136 |
|
|
|
137 |
/**
|
|
|
138 |
* @return CSSFunction|CSSString|LineName|Size|URL|string
|
|
|
139 |
*
|
|
|
140 |
* @throws UnexpectedEOFException
|
|
|
141 |
* @throws UnexpectedTokenException
|
|
|
142 |
* @throws SourceException
|
|
|
143 |
*/
|
|
|
144 |
public static function parsePrimitiveValue(ParserState $oParserState)
|
|
|
145 |
{
|
|
|
146 |
$oValue = null;
|
|
|
147 |
$oParserState->consumeWhiteSpace();
|
|
|
148 |
if (
|
|
|
149 |
is_numeric($oParserState->peek())
|
|
|
150 |
|| ($oParserState->comes('-.')
|
|
|
151 |
&& is_numeric($oParserState->peek(1, 2)))
|
|
|
152 |
|| (($oParserState->comes('-') || $oParserState->comes('.')) && is_numeric($oParserState->peek(1, 1)))
|
|
|
153 |
) {
|
|
|
154 |
$oValue = Size::parse($oParserState);
|
|
|
155 |
} elseif ($oParserState->comes('#') || $oParserState->comes('rgb', true) || $oParserState->comes('hsl', true)) {
|
|
|
156 |
$oValue = Color::parse($oParserState);
|
|
|
157 |
} elseif ($oParserState->comes("'") || $oParserState->comes('"')) {
|
|
|
158 |
$oValue = CSSString::parse($oParserState);
|
|
|
159 |
} elseif ($oParserState->comes("progid:") && $oParserState->getSettings()->bLenientParsing) {
|
|
|
160 |
$oValue = self::parseMicrosoftFilter($oParserState);
|
|
|
161 |
} elseif ($oParserState->comes("[")) {
|
|
|
162 |
$oValue = LineName::parse($oParserState);
|
|
|
163 |
} elseif ($oParserState->comes("U+")) {
|
|
|
164 |
$oValue = self::parseUnicodeRangeValue($oParserState);
|
|
|
165 |
} else {
|
|
|
166 |
$sNextChar = $oParserState->peek(1);
|
|
|
167 |
try {
|
|
|
168 |
$oValue = self::parseIdentifierOrFunction($oParserState);
|
|
|
169 |
} catch (UnexpectedTokenException $e) {
|
|
|
170 |
if (\in_array($sNextChar, ['+', '-', '*', '/'], true)) {
|
|
|
171 |
$oValue = $oParserState->consume(1);
|
|
|
172 |
} else {
|
|
|
173 |
throw $e;
|
|
|
174 |
}
|
|
|
175 |
}
|
|
|
176 |
}
|
|
|
177 |
$oParserState->consumeWhiteSpace();
|
|
|
178 |
return $oValue;
|
|
|
179 |
}
|
|
|
180 |
|
|
|
181 |
/**
|
|
|
182 |
* @return CSSFunction
|
|
|
183 |
*
|
|
|
184 |
* @throws UnexpectedEOFException
|
|
|
185 |
* @throws UnexpectedTokenException
|
|
|
186 |
*/
|
|
|
187 |
private static function parseMicrosoftFilter(ParserState $oParserState)
|
|
|
188 |
{
|
|
|
189 |
$sFunction = $oParserState->consumeUntil('(', false, true);
|
|
|
190 |
$aArguments = Value::parseValue($oParserState, [',', '=']);
|
|
|
191 |
return new CSSFunction($sFunction, $aArguments, ',', $oParserState->currentLine());
|
|
|
192 |
}
|
|
|
193 |
|
|
|
194 |
/**
|
|
|
195 |
* @return string
|
|
|
196 |
*
|
|
|
197 |
* @throws UnexpectedEOFException
|
|
|
198 |
* @throws UnexpectedTokenException
|
|
|
199 |
*/
|
|
|
200 |
private static function parseUnicodeRangeValue(ParserState $oParserState)
|
|
|
201 |
{
|
|
|
202 |
$iCodepointMaxLength = 6; // Code points outside BMP can use up to six digits
|
|
|
203 |
$sRange = "";
|
|
|
204 |
$oParserState->consume("U+");
|
|
|
205 |
do {
|
|
|
206 |
if ($oParserState->comes('-')) {
|
|
|
207 |
$iCodepointMaxLength = 13; // Max length is 2 six digit code points + the dash(-) between them
|
|
|
208 |
}
|
|
|
209 |
$sRange .= $oParserState->consume(1);
|
|
|
210 |
} while (strlen($sRange) < $iCodepointMaxLength && preg_match("/[A-Fa-f0-9\?-]/", $oParserState->peek()));
|
|
|
211 |
return "U+{$sRange}";
|
|
|
212 |
}
|
|
|
213 |
|
|
|
214 |
/**
|
|
|
215 |
* @return int
|
|
|
216 |
*/
|
|
|
217 |
public function getLineNo()
|
|
|
218 |
{
|
|
|
219 |
return $this->iLineNo;
|
|
|
220 |
}
|
|
|
221 |
}
|