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<?php |
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namespace ZWF; |
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use ZWF\GoogleFontsOptimizerUtils as Utils; |
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class GoogleFontsCollection |
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{ |
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protected $links = []; |
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protected $texts = []; |
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protected $complete = []; |
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protected $fonts = []; |
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protected $subsetsMap = []; |
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protected $namedSizes = []; |
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public function __construct(array $urls = []) |
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{ |
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if (! empty($urls)) { |
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foreach ($urls as $url) { |
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$this->add($url); |
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} |
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} |
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} |
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public function add($url) |
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{ |
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$this->addLink($url); |
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$params = []; |
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parse_str(parse_url($url, PHP_URL_QUERY), $params); |
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$bucket = isset($params['text']) ? 'text' : 'complete'; |
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$fontstrings = $this->buildFontStringsFromQueryParams($params); |
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foreach ($fontstrings as $font) { |
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$this->addFontFromString($font, $bucket); |
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if ('text' === $bucket) { |
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$font_family = explode(':', $font); |
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$this->addTextFont($font_family[0], Utils::httpsify($url)); |
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} else { |
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$this->addComplete($font); |
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} |
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} |
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} |
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/** |
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* Returns an array of data needed to generated webfontloader script markup. |
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* |
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* @return array |
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*/ |
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public function getScriptData() |
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{ |
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return [ |
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$this->getNamedSizesMap(), |
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$this->getSubsetsMap() |
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]; |
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} |
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protected function addFontFromString($fontstring, $bucket = 'complete') |
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{ |
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$font = GoogleFont::fromString($fontstring); |
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$name = $font->getName(); |
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$subsets = $font->getSubsetsString(); |
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// Add to bucket list |
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$this->fonts[$bucket][] = $font; |
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// Keeping a separate map of names => subsets for webfontloader purposes |
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if (! array_key_exists($name, $this->subsetsMap)) { |
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// Nothing found yet, create a new key |
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$this->subsetsMap[$name] = $subsets; |
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} else { |
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// Something is in there already, append to that. |
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// Existing subsetsMap[$name] might not be an array |
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if (! is_array($this->subsetsMap[$name])) { |
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$this->subsetsMap[$name] = (array) $this->subsetsMap[$name]; |
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} |
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$this->subsetsMap[$name] = array_merge($this->subsetsMap[$name], (array) $subsets); |
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} |
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// Deduplicate values and don't sort the subsets map |
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$this->subsetsMap = Utils::dedupValues($this->subsetsMap, false); // no sort |
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// Maintain the list/hash of name => sizes when adding a new one too |
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$this->namedSizes = $this->buildNamedsizesMap(); |
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} |
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/** |
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* @return array |
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*/ |
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protected function getSubsetsMap() |
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{ |
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return $this->subsetsMap; |
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} |
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protected function addTextFont($name, $url) |
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{ |
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$this->texts['name'][] = $name; |
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$this->texts['url'][] = $url; |
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} |
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protected function addComplete($fontstring) |
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{ |
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$this->complete[] = $fontstring; |
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} |
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protected function addLink($url) |
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{ |
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$this->links[] = $url; |
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} |
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public function getOriginalLinks() |
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{ |
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return $this->links; |
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} |
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public function hasText() |
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{ |
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return (! empty($this->texts)); |
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} |
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/** |
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* @return array |
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*/ |
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public function getTextUrls() |
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{ |
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$urls = []; |
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if ($this->hasText()) { |
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$urls = $this->texts['url']; |
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} |
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return $urls; |
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} |
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/** |
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* @return array |
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*/ |
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public function getTextNames() |
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{ |
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return $this->texts['name']; |
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} |
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public function getFonts() |
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{ |
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return $this->fonts['complete']; |
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} |
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public function getFontsText() |
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{ |
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return $this->fonts['text']; |
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} |
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public function getCombinedUrl() |
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{ |
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return Utils::buildGoogleFontsUrl($this->getNamedSizesMap(), $this->getSubsets()); |
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} |
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public function getNamedSizesMap() |
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{ |
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return $this->namedSizes; |
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} |
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public function getSubsets() |
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{ |
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$subsets = []; |
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$fonts = $this->getFonts(); |
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foreach ($fonts as $font) { |
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$subsets[] = $font->getSubsets(); |
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} |
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$subsets = Utils::arrayFlattenIterative($subsets); |
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return array_unique($subsets); |
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} |
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/** |
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* @return array |
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*/ |
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protected function buildNamedsizesMap() |
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{ |
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$fonts = []; |
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foreach ($this->getFonts() as $font) { |
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$name = $font->getName(); |
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if (! array_key_exists($name, $fonts)) { |
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$fonts[$name] = $font->getSizes(); |
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} else { |
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$fonts[$name] = array_merge($fonts[$name], $font->getSizes()); |
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} |
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} |
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// Sanitize and de-dup |
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$fonts = Utils::dedupValues($fonts, SORT_REGULAR); // sorts values (sizes) |
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// Sorts by font names alphabetically |
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ksort($fonts); |
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return $fonts; |
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} |
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/** |
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* Looks for and parses the `family` query string value into a string |
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* that Google Fonts expects (family, weights and subsets separated by |
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* a semicolon). |
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* |
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* @param array $params |
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* |
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* @return array |
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*/ |
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protected function buildFontStringsFromQueryParams(array $params) |
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{ |
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$fonts = []; |
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foreach (explode('|', $params['family']) as $family) { |
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$font = $this->parseFontStringName($family, $params); |
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if (! empty($font)) { |
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$fonts[] = $font; |
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} |
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} |
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return $fonts; |
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} |
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/** |
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* @param string $family |
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* @param array $params |
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* |
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* @return string |
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*/ |
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protected function parseFontStringName($family, array $params) |
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{ |
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$subset = false; |
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$family = explode(':', $family); |
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if (isset($params['subset'])) { |
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// Use the found subset query parameter |
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$subset = $params['subset']; |
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} elseif (isset($family[2])) { |
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// Use the subset in the family string if present |
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$subset = $family[2]; |
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} |
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// $family can have a lot of thing specified with separators etc. |
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$parts = $this->validateFontStringParts($family, $subset); |
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$font = implode(':', $parts); |
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return $font; |
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} |
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/** |
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* Validate and return desired font name/size/subset parts. |
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* |
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* @param array $family |
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* @param bool $subset |
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* |
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* @return array |
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*/ |
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protected function validateFontStringParts(array $family, $subset = false) |
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{ |
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$parts = []; |
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// First part is the font name, which should always be present |
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$parts[] = $family[0]; |
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// Check if sizes are specified |
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if (isset($family[1]) && strlen($family[1]) > 0) { |
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$parts[] = $family[1]; |
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} |
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// Add the subset if specified |
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if ($subset) { |
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$parts[] = $subset; |
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} |
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return $parts; |
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} |
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} |
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