[25344] | 1 | <?php |
---|
| 2 | /* |
---|
| 3 | UPDATES |
---|
| 4 | |
---|
| 5 | 2008-08-10 Fixed CSS comment stripping regex to add PCRE_DOTALL (changed from '/\/\*.*\*\//U' to '/\/\*.*\*\//sU') |
---|
| 6 | 2008-08-18 Added lines instructing DOMDocument to attempt to normalize HTML before processing |
---|
| 7 | 2008-10-20 Fixed bug with bad variable name... Thanks Thomas! |
---|
| 8 | 2008-03-02 Added licensing terms under the MIT License |
---|
| 9 | Only remove unprocessable HTML tags if they exist in the array |
---|
| 10 | 2009-06-03 Normalize existing CSS (style) attributes in the HTML before we process the CSS. |
---|
| 11 | Made it so that the display:none stripper doesn't require a trailing semi-colon. |
---|
| 12 | 2009-08-13 Added support for subset class values (e.g. "p.class1.class2"). |
---|
| 13 | Added better protection for bad css attributes. |
---|
| 14 | Fixed support for HTML entities. |
---|
| 15 | 2009-08-17 Fixed CSS selector processing so that selectors are processed by precedence/specificity, and not just in order. |
---|
| 16 | 2009-10-29 Fixed so that selectors appearing later in the CSS will have precedence over identical selectors appearing earlier. |
---|
| 17 | 2009-11-04 Explicitly declared static functions static to get rid of E_STRICT notices. |
---|
| 18 | 2010-05-18 Fixed bug where full url filenames with protocols wouldn't get split improperly when we explode on ':'... Thanks Mark! |
---|
| 19 | Added two new attribute selectors |
---|
| 20 | 2010-06-16 Added static caching for less processing overhead in situations where multiple emogrification takes place |
---|
| 21 | 2010-07-26 Fixed bug where '0' values were getting discarded because of php's empty() function... Thanks Scott! |
---|
| 22 | 2010-09-03 Added checks to invisible node removal to ensure that we don't try to remove non-existent child nodes of parents that have already been deleted |
---|
| 23 | 2011-04-08 Fixed errors in CSS->XPath conversion for adjacent sibling selectors and id/class combinations... Thanks Bob V.! |
---|
| 24 | 2011-06-08 Fixed an error where CSS @media types weren't being parsed correctly... Thanks Will W.! |
---|
| 25 | 2011-08-03 Fixed an error where an empty selector at the beginning of the CSS would cause a parse error on the next selector... Thanks Alexei T.! |
---|
| 26 | 2011-10-13 Fully fixed a bug introduced in 2011-06-08 where selectors at the beginning of the CSS would be parsed incorrectly... Thanks Thomas A.! |
---|
| 27 | 2011-10-26 Added an option to allow you to output emogrified code without extended characters being turned into HTML entities. |
---|
| 28 | Moved static references to class attributes so they can be manipulated. |
---|
| 29 | Added the ability to clear out the (formerly) static cache when CSS is reloaded. |
---|
| 30 | 2011-12-22 Fixed a bug that was overwriting existing inline styles from the original HTML... Thanks Sagi L.! |
---|
| 31 | 2012-01-31 Fixed a bug that was introduced with the 2011-12-22 revision... Thanks Sagi L. and M. Bąkowski! |
---|
| 32 | Added extraction of <style> blocks within the HTML due to popular demand. |
---|
| 33 | Added several new pseudo-selectors (first-child, last-child, nth-child, and nth-of-type). |
---|
| 34 | 2012-02-07 Fixed some recent code introductions to use class constants rather than global constants. |
---|
| 35 | Fixed some recent code introductions to make it cleaner to read. |
---|
| 36 | 2012-05-01 Made removal of invisible nodes operate in a case-insensitive manner... Thanks Juha P.! |
---|
| 37 | 2013-10-10 Add preserveStyleTag option |
---|
| 38 | */ |
---|
| 39 | |
---|
| 40 | define('CACHE_CSS', 0); |
---|
| 41 | define('CACHE_SELECTOR', 1); |
---|
| 42 | define('CACHE_XPATH', 2); |
---|
| 43 | |
---|
| 44 | class Emogrifier { |
---|
| 45 | |
---|
| 46 | // for calculating nth-of-type and nth-child selectors |
---|
| 47 | const INDEX = 0; |
---|
| 48 | const MULTIPLIER = 1; |
---|
| 49 | |
---|
| 50 | private $html = ''; |
---|
| 51 | private $css = ''; |
---|
| 52 | private $unprocessableHTMLTags = array('wbr'); |
---|
| 53 | private $caches = array(); |
---|
| 54 | |
---|
| 55 | // this attribute applies to the case where you want to preserve your original text encoding. |
---|
| 56 | // by default, emogrifier translates your text into HTML entities for two reasons: |
---|
| 57 | // 1. because of client incompatibilities, it is better practice to send out HTML entities rather than unicode over email |
---|
| 58 | // 2. it translates any illegal XML characters that DOMDocument cannot work with |
---|
| 59 | // if you would like to preserve your original encoding, set this attribute to true. |
---|
| 60 | public $preserveEncoding = false; |
---|
| 61 | |
---|
| 62 | // by default, emogrifier removes <style> tags, set preserveStyleTag to true to keep them |
---|
| 63 | public $preserveStyleTag = false; |
---|
| 64 | |
---|
| 65 | public function __construct($html = '', $css = '') { |
---|
| 66 | $this->html = $html; |
---|
| 67 | $this->css = $css; |
---|
| 68 | $this->clearCache(); |
---|
| 69 | } |
---|
| 70 | |
---|
| 71 | public function setHTML($html = '') { $this->html = $html; } |
---|
| 72 | public function setCSS($css = '') { |
---|
| 73 | $this->css = $css; |
---|
| 74 | $this->clearCache(CACHE_CSS); |
---|
| 75 | } |
---|
| 76 | |
---|
| 77 | public function clearCache($key = null) { |
---|
| 78 | if (!is_null($key)) { |
---|
| 79 | if (isset($this->caches[$key])) $this->caches[$key] = array(); |
---|
| 80 | } else { |
---|
| 81 | $this->caches = array( |
---|
| 82 | CACHE_CSS => array(), |
---|
| 83 | CACHE_SELECTOR => array(), |
---|
| 84 | CACHE_XPATH => array(), |
---|
| 85 | ); |
---|
| 86 | } |
---|
| 87 | } |
---|
| 88 | |
---|
| 89 | // there are some HTML tags that DOMDocument cannot process, and will throw an error if it encounters them. |
---|
| 90 | // in particular, DOMDocument will complain if you try to use HTML5 tags in an XHTML document. |
---|
| 91 | // these functions allow you to add/remove them if necessary. |
---|
| 92 | // it only strips them from the code (does not remove actual nodes). |
---|
| 93 | public function addUnprocessableHTMLTag($tag) { $this->unprocessableHTMLTags[] = $tag; } |
---|
| 94 | public function removeUnprocessableHTMLTag($tag) { |
---|
| 95 | if (($key = array_search($tag,$this->unprocessableHTMLTags)) !== false) |
---|
| 96 | unset($this->unprocessableHTMLTags[$key]); |
---|
| 97 | } |
---|
| 98 | |
---|
| 99 | // applies the CSS you submit to the html you submit. places the css inline |
---|
| 100 | public function emogrify() { |
---|
| 101 | $body = $this->html; |
---|
| 102 | |
---|
| 103 | // remove any unprocessable HTML tags (tags that DOMDocument cannot parse; this includes wbr and many new HTML5 tags) |
---|
| 104 | if (count($this->unprocessableHTMLTags)) { |
---|
| 105 | $unprocessableHTMLTags = implode('|',$this->unprocessableHTMLTags); |
---|
| 106 | $body = preg_replace("/<\/?($unprocessableHTMLTags)[^>]*>/i",'',$body); |
---|
| 107 | } |
---|
| 108 | |
---|
| 109 | $encoding = mb_detect_encoding($body); |
---|
| 110 | $body = mb_convert_encoding($body, 'HTML-ENTITIES', $encoding); |
---|
| 111 | |
---|
| 112 | $xmldoc = new DOMDocument; |
---|
| 113 | $xmldoc->encoding = $encoding; |
---|
| 114 | $xmldoc->strictErrorChecking = false; |
---|
| 115 | $xmldoc->formatOutput = true; |
---|
| 116 | $xmldoc->loadHTML($body); |
---|
| 117 | $xmldoc->normalizeDocument(); |
---|
| 118 | |
---|
| 119 | $xpath = new DOMXPath($xmldoc); |
---|
| 120 | |
---|
| 121 | // before be begin processing the CSS file, parse the document and normalize all existing CSS attributes (changes 'DISPLAY: none' to 'display: none'); |
---|
| 122 | // we wouldn't have to do this if DOMXPath supported XPath 2.0. |
---|
| 123 | // also store a reference of nodes with existing inline styles so we don't overwrite them |
---|
| 124 | $vistedNodes = $vistedNodeRef = array(); |
---|
| 125 | $nodes = @$xpath->query('//*[@style]'); |
---|
| 126 | foreach ($nodes as $node) { |
---|
| 127 | $normalizedOrigStyle = preg_replace('/[A-z\-]+(?=\:)/Se',"strtolower('\\0')", $node->getAttribute('style')); |
---|
| 128 | |
---|
| 129 | // in order to not overwrite existing style attributes in the HTML, we have to save the original HTML styles |
---|
| 130 | $nodeKey = md5($node->getNodePath()); |
---|
| 131 | if (!isset($vistedNodeRef[$nodeKey])) { |
---|
| 132 | $vistedNodeRef[$nodeKey] = $this->cssStyleDefinitionToArray($normalizedOrigStyle); |
---|
| 133 | $vistedNodes[$nodeKey] = $node; |
---|
| 134 | } |
---|
| 135 | |
---|
| 136 | $node->setAttribute('style', $normalizedOrigStyle); |
---|
| 137 | } |
---|
| 138 | |
---|
| 139 | // grab any existing style blocks from the html and append them to the existing CSS |
---|
| 140 | // (these blocks should be appended so as to have precedence over conflicting styles in the existing CSS) |
---|
| 141 | $css = $this->css; |
---|
| 142 | $nodes = @$xpath->query('//style'); |
---|
| 143 | foreach ($nodes as $node) { |
---|
| 144 | // append the css |
---|
| 145 | $css .= "\n\n{$node->nodeValue}"; |
---|
| 146 | // remove the <style> node |
---|
| 147 | if (!$this->preserveStyleTag) { |
---|
| 148 | $node->parentNode->removeChild($node); |
---|
| 149 | } |
---|
| 150 | } |
---|
| 151 | |
---|
| 152 | // filter the CSS |
---|
| 153 | $search = array( |
---|
| 154 | '/\/\*.*\*\//sU', // get rid of css comment code |
---|
| 155 | '/^\s*@import\s[^;]+;/misU', // strip out any import directives |
---|
| 156 | '/^\s*@media\s[^{]+{\s*}/misU', // strip any empty media enclosures |
---|
| 157 | '/^\s*@media\s+((aural|braille|embossed|handheld|print|projection|speech|tty|tv)\s*,*\s*)+{.*}\s*}/misU', // strip out all media types that are not 'screen' or 'all' (these don't apply to email) |
---|
| 158 | '/^\s*@media\s[^{]+{(.*})\s*}/misU', // get rid of remaining media type enclosures |
---|
| 159 | ); |
---|
| 160 | |
---|
| 161 | $replace = array( |
---|
| 162 | '', |
---|
| 163 | '', |
---|
| 164 | '', |
---|
| 165 | '', |
---|
| 166 | '\\1', |
---|
| 167 | ); |
---|
| 168 | |
---|
| 169 | $css = preg_replace($search, $replace, $css); |
---|
| 170 | |
---|
| 171 | $csskey = md5($css); |
---|
| 172 | if (!isset($this->caches[CACHE_CSS][$csskey])) { |
---|
| 173 | |
---|
| 174 | // process the CSS file for selectors and definitions |
---|
| 175 | preg_match_all('/(^|[^{}])\s*([^{]+){([^}]*)}/mis', $css, $matches, PREG_SET_ORDER); |
---|
| 176 | |
---|
| 177 | $all_selectors = array(); |
---|
| 178 | foreach ($matches as $key => $selectorString) { |
---|
| 179 | // if there is a blank definition, skip |
---|
| 180 | if (!strlen(trim($selectorString[3]))) continue; |
---|
| 181 | |
---|
| 182 | // else split by commas and duplicate attributes so we can sort by selector precedence |
---|
| 183 | $selectors = explode(',',$selectorString[2]); |
---|
| 184 | foreach ($selectors as $selector) { |
---|
| 185 | |
---|
| 186 | // don't process pseudo-elements and behavioral (dynamic) pseudo-classes; ONLY allow structural pseudo-classes |
---|
| 187 | if (strpos($selector, ':') !== false && !preg_match('/:\S+\-(child|type)\(/i', $selector)) continue; |
---|
| 188 | |
---|
| 189 | $all_selectors[] = array('selector' => trim($selector), |
---|
| 190 | 'attributes' => trim($selectorString[3]), |
---|
| 191 | 'line' => $key, // keep track of where it appears in the file, since order is important |
---|
| 192 | ); |
---|
| 193 | } |
---|
| 194 | } |
---|
| 195 | |
---|
| 196 | // now sort the selectors by precedence |
---|
| 197 | usort($all_selectors, array($this,'sortBySelectorPrecedence')); |
---|
| 198 | |
---|
| 199 | $this->caches[CACHE_CSS][$csskey] = $all_selectors; |
---|
| 200 | } |
---|
| 201 | |
---|
| 202 | foreach ($this->caches[CACHE_CSS][$csskey] as $value) { |
---|
| 203 | |
---|
| 204 | // query the body for the xpath selector |
---|
| 205 | $nodes = $xpath->query($this->translateCSStoXpath(trim($value['selector']))); |
---|
| 206 | |
---|
| 207 | foreach($nodes as $node) { |
---|
| 208 | // if it has a style attribute, get it, process it, and append (overwrite) new stuff |
---|
| 209 | if ($node->hasAttribute('style')) { |
---|
| 210 | // break it up into an associative array |
---|
| 211 | $oldStyleArr = $this->cssStyleDefinitionToArray($node->getAttribute('style')); |
---|
| 212 | $newStyleArr = $this->cssStyleDefinitionToArray($value['attributes']); |
---|
| 213 | |
---|
| 214 | // new styles overwrite the old styles (not technically accurate, but close enough) |
---|
| 215 | $combinedArr = array_merge($oldStyleArr,$newStyleArr); |
---|
| 216 | $style = ''; |
---|
| 217 | foreach ($combinedArr as $k => $v) $style .= (strtolower($k) . ':' . $v . ';'); |
---|
| 218 | } else { |
---|
| 219 | // otherwise create a new style |
---|
| 220 | $style = trim($value['attributes']); |
---|
| 221 | } |
---|
| 222 | $node->setAttribute('style', $style); |
---|
| 223 | } |
---|
| 224 | } |
---|
| 225 | |
---|
| 226 | // now iterate through the nodes that contained inline styles in the original HTML |
---|
| 227 | foreach ($vistedNodeRef as $nodeKey => $origStyleArr) { |
---|
| 228 | $node = $vistedNodes[$nodeKey]; |
---|
| 229 | $currStyleArr = $this->cssStyleDefinitionToArray($node->getAttribute('style')); |
---|
| 230 | |
---|
| 231 | $combinedArr = array_merge($currStyleArr, $origStyleArr); |
---|
| 232 | $style = ''; |
---|
| 233 | foreach ($combinedArr as $k => $v) $style .= (strtolower($k) . ':' . $v . ';'); |
---|
| 234 | |
---|
| 235 | $node->setAttribute('style', $style); |
---|
| 236 | } |
---|
| 237 | |
---|
| 238 | // This removes styles from your email that contain display:none. |
---|
| 239 | // We need to look for display:none, but we need to do a case-insensitive search. Since DOMDocument only supports XPath 1.0, |
---|
| 240 | // lower-case() isn't available to us. We've thus far only set attributes to lowercase, not attribute values. Consequently, we need |
---|
| 241 | // to translate() the letters that would be in 'NONE' ("NOE") to lowercase. |
---|
| 242 | $nodes = $xpath->query('//*[contains(translate(translate(@style," ",""),"NOE","noe"),"display:none")]'); |
---|
| 243 | // The checks on parentNode and is_callable below ensure that if we've deleted the parent node, |
---|
| 244 | // we don't try to call removeChild on a nonexistent child node |
---|
| 245 | if ($nodes->length > 0) |
---|
| 246 | foreach ($nodes as $node) |
---|
| 247 | if ($node->parentNode && is_callable(array($node->parentNode,'removeChild'))) |
---|
| 248 | $node->parentNode->removeChild($node); |
---|
| 249 | |
---|
| 250 | if ($this->preserveEncoding) { |
---|
| 251 | return mb_convert_encoding($xmldoc->saveHTML(), $encoding, 'HTML-ENTITIES'); |
---|
| 252 | } else { |
---|
| 253 | return $xmldoc->saveHTML(); |
---|
| 254 | } |
---|
| 255 | } |
---|
| 256 | |
---|
| 257 | private function sortBySelectorPrecedence($a, $b) { |
---|
| 258 | $precedenceA = $this->getCSSSelectorPrecedence($a['selector']); |
---|
| 259 | $precedenceB = $this->getCSSSelectorPrecedence($b['selector']); |
---|
| 260 | |
---|
| 261 | // we want these sorted ascendingly so selectors with lesser precedence get processed first and |
---|
| 262 | // selectors with greater precedence get sorted last |
---|
| 263 | return ($precedenceA == $precedenceB) ? ($a['line'] < $b['line'] ? -1 : 1) : ($precedenceA < $precedenceB ? -1 : 1); |
---|
| 264 | } |
---|
| 265 | |
---|
| 266 | private function getCSSSelectorPrecedence($selector) { |
---|
| 267 | $selectorkey = md5($selector); |
---|
| 268 | if (!isset($this->caches[CACHE_SELECTOR][$selectorkey])) { |
---|
| 269 | $precedence = 0; |
---|
| 270 | $value = 100; |
---|
| 271 | $search = array('\#','\.',''); // ids: worth 100, classes: worth 10, elements: worth 1 |
---|
| 272 | |
---|
| 273 | foreach ($search as $s) { |
---|
| 274 | if (trim($selector == '')) break; |
---|
| 275 | $num = 0; |
---|
| 276 | $selector = preg_replace('/'.$s.'\w+/','',$selector,-1,$num); |
---|
| 277 | $precedence += ($value * $num); |
---|
| 278 | $value /= 10; |
---|
| 279 | } |
---|
| 280 | $this->caches[CACHE_SELECTOR][$selectorkey] = $precedence; |
---|
| 281 | } |
---|
| 282 | |
---|
| 283 | return $this->caches[CACHE_SELECTOR][$selectorkey]; |
---|
| 284 | } |
---|
| 285 | |
---|
| 286 | // right now we support all CSS 1 selectors and most CSS2/3 selectors. |
---|
| 287 | // http://plasmasturm.org/log/444/ |
---|
| 288 | private function translateCSStoXpath($css_selector) { |
---|
| 289 | |
---|
| 290 | $css_selector = trim($css_selector); |
---|
| 291 | $xpathkey = md5($css_selector); |
---|
| 292 | if (!isset($this->caches[CACHE_XPATH][$xpathkey])) { |
---|
| 293 | // returns an Xpath selector |
---|
| 294 | $search = array( |
---|
| 295 | '/\s+>\s+/', // Matches any element that is a child of parent. |
---|
| 296 | '/\s+\+\s+/', // Matches any element that is an adjacent sibling. |
---|
| 297 | '/\s+/', // Matches any element that is a descendant of an parent element element. |
---|
| 298 | '/([^\/]+):first-child/i', // first-child pseudo-selector |
---|
| 299 | '/([^\/]+):last-child/i', // last-child pseudo-selector |
---|
| 300 | '/(\w)\[(\w+)\]/', // Matches element with attribute |
---|
| 301 | '/(\w)\[(\w+)\=[\'"]?(\w+)[\'"]?\]/', // Matches element with EXACT attribute |
---|
| 302 | '/(\w+)?\#([\w\-]+)/e', // Matches id attributes |
---|
| 303 | '/(\w+|[\*\]])?((\.[\w\-]+)+)/e', // Matches class attributes |
---|
| 304 | |
---|
| 305 | ); |
---|
| 306 | $replace = array( |
---|
| 307 | '/', |
---|
| 308 | '/following-sibling::*[1]/self::', |
---|
| 309 | '//', |
---|
| 310 | '*[1]/self::\\1', |
---|
| 311 | '*[last()]/self::\\1', |
---|
| 312 | '\\1[@\\2]', |
---|
| 313 | '\\1[@\\2="\\3"]', |
---|
| 314 | "(strlen('\\1') ? '\\1' : '*').'[@id=\"\\2\"]'", |
---|
| 315 | "(strlen('\\1') ? '\\1' : '*').'[contains(concat(\" \",@class,\" \"),concat(\" \",\"'.implode('\",\" \"))][contains(concat(\" \",@class,\" \"),concat(\" \",\"',explode('.',substr('\\2',1))).'\",\" \"))]'", |
---|
| 316 | ); |
---|
| 317 | |
---|
| 318 | $css_selector = '//'.preg_replace($search, $replace, $css_selector); |
---|
| 319 | |
---|
| 320 | // advanced selectors are going to require a bit more advanced emogrification |
---|
| 321 | // if we required PHP 5.3 we could do this with closures |
---|
| 322 | $css_selector = preg_replace_callback('/([^\/]+):nth-child\(\s*(odd|even|[+\-]?\d|[+\-]?\d?n(\s*[+\-]\s*\d)?)\s*\)/i', array($this, 'translateNthChild'), $css_selector); |
---|
| 323 | $css_selector = preg_replace_callback('/([^\/]+):nth-of-type\(\s*(odd|even|[+\-]?\d|[+\-]?\d?n(\s*[+\-]\s*\d)?)\s*\)/i', array($this, 'translateNthOfType'), $css_selector); |
---|
| 324 | |
---|
| 325 | $this->caches[CACHE_SELECTOR][$xpathkey] = $css_selector; |
---|
| 326 | } |
---|
| 327 | return $this->caches[CACHE_SELECTOR][$xpathkey]; |
---|
| 328 | } |
---|
| 329 | |
---|
| 330 | private function translateNthChild($match) { |
---|
| 331 | |
---|
| 332 | $result = $this->parseNth($match); |
---|
| 333 | |
---|
| 334 | if (isset($result[self::MULTIPLIER])) { |
---|
| 335 | if ($result[self::MULTIPLIER] < 0) { |
---|
| 336 | $result[self::MULTIPLIER] = abs($result[self::MULTIPLIER]); |
---|
| 337 | return sprintf("*[(last() - position()) mod %u = %u]/self::%s", $result[self::MULTIPLIER], $result[self::INDEX], $match[1]); |
---|
| 338 | } else { |
---|
| 339 | return sprintf("*[position() mod %u = %u]/self::%s", $result[self::MULTIPLIER], $result[self::INDEX], $match[1]); |
---|
| 340 | } |
---|
| 341 | } else { |
---|
| 342 | return sprintf("*[%u]/self::%s", $result[self::INDEX], $match[1]); |
---|
| 343 | } |
---|
| 344 | } |
---|
| 345 | |
---|
| 346 | private function translateNthOfType($match) { |
---|
| 347 | |
---|
| 348 | $result = $this->parseNth($match); |
---|
| 349 | |
---|
| 350 | if (isset($result[self::MULTIPLIER])) { |
---|
| 351 | if ($result[self::MULTIPLIER] < 0) { |
---|
| 352 | $result[self::MULTIPLIER] = abs($result[self::MULTIPLIER]); |
---|
| 353 | return sprintf("%s[(last() - position()) mod %u = %u]", $match[1], $result[self::MULTIPLIER], $result[self::INDEX]); |
---|
| 354 | } else { |
---|
| 355 | return sprintf("%s[position() mod %u = %u]", $match[1], $result[self::MULTIPLIER], $result[self::INDEX]); |
---|
| 356 | } |
---|
| 357 | } else { |
---|
| 358 | return sprintf("%s[%u]", $match[1], $result[self::INDEX]); |
---|
| 359 | } |
---|
| 360 | } |
---|
| 361 | |
---|
| 362 | private function parseNth($match) { |
---|
| 363 | |
---|
| 364 | if (in_array(strtolower($match[2]), array('even','odd'))) { |
---|
| 365 | $index = strtolower($match[2]) == 'even' ? 0 : 1; |
---|
| 366 | return array(self::MULTIPLIER => 2, self::INDEX => $index); |
---|
| 367 | // if there is a multiplier |
---|
| 368 | } else if (stripos($match[2], 'n') === false) { |
---|
| 369 | $index = intval(str_replace(' ', '', $match[2])); |
---|
| 370 | return array(self::INDEX => $index); |
---|
| 371 | } else { |
---|
| 372 | |
---|
| 373 | if (isset($match[3])) { |
---|
| 374 | $multiple_term = str_replace($match[3], '', $match[2]); |
---|
| 375 | $index = intval(str_replace(' ', '', $match[3])); |
---|
| 376 | } else { |
---|
| 377 | $multiple_term = $match[2]; |
---|
| 378 | $index = 0; |
---|
| 379 | } |
---|
| 380 | |
---|
| 381 | $multiplier = str_ireplace('n', '', $multiple_term); |
---|
| 382 | |
---|
| 383 | if (!strlen($multiplier)) $multiplier = 1; |
---|
| 384 | elseif ($multiplier == 0) return array(self::INDEX => $index); |
---|
| 385 | else $multiplier = intval($multiplier); |
---|
| 386 | |
---|
| 387 | while ($index < 0) $index += abs($multiplier); |
---|
| 388 | |
---|
| 389 | return array(self::MULTIPLIER => $multiplier, self::INDEX => $index); |
---|
| 390 | } |
---|
| 391 | } |
---|
| 392 | |
---|
| 393 | private function cssStyleDefinitionToArray($style) { |
---|
| 394 | $definitions = explode(';',$style); |
---|
| 395 | $retArr = array(); |
---|
| 396 | foreach ($definitions as $def) { |
---|
| 397 | if (empty($def) || strpos($def, ':') === false) continue; |
---|
| 398 | list($key,$value) = explode(':',$def,2); |
---|
| 399 | if (empty($key) || strlen(trim($value)) === 0) continue; |
---|
| 400 | $retArr[trim($key)] = trim($value); |
---|
| 401 | } |
---|
| 402 | return $retArr; |
---|
| 403 | } |
---|
| 404 | } |
---|