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<?php |
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/* |
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* This file is part of ocubom/twig-svg-extension |
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* |
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* © Oscar Cubo Medina <https://ocubom.github.io> |
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* |
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* For the full copyright and license information, please view the LICENSE |
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* file that was distributed with this source code. |
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*/ |
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namespace Ocubom\Twig\Extension; |
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use Ocubom\Twig\Extension\Svg\Exception\LoaderException; |
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use Ocubom\Twig\Extension\Svg\Loader\LoaderInterface; |
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use Ocubom\Twig\Extension\Svg\Symbol; |
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use Ocubom\Twig\Extension\Svg\Util\DomUtil; |
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use Ocubom\Twig\Extension\Svg\Util\Html5Util; |
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use Psr\Log\LoggerInterface; |
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use Psr\Log\NullLogger; |
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use Twig\Environment; |
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use Twig\Extension\RuntimeExtensionInterface; |
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class SvgRuntime implements RuntimeExtensionInterface |
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{ |
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private LoaderInterface $loader; |
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private LoggerInterface $logger; |
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public function __construct(LoaderInterface $loader, LoggerInterface $logger = null) |
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{ |
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$this->loader = $loader; |
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$this->logger = $logger ?? new NullLogger(); |
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} |
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public function convertToSymbols(Environment $twig, string $html): string |
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{ |
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// Load HTML |
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$doc = Html5Util::loadHtml($html); |
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/** @var \DOMElement[] $elements */ |
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$elements = []; |
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/** @var \DOMElement[] $symbols */ |
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$symbols = []; |
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/** @var \DOMElement $svg */ |
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foreach ($doc->getElementsByTagName('svg') as $svg) { |
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$symbol = new Symbol($svg, [ |
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'debug' => $twig->isDebug(), |
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]); |
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// Replace the SVG with reference |
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DomUtil::replaceNode($svg, $symbol->getReference()); |
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// Index symbol by id |
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$symbols[$symbol->getId()] = $symbols[$symbol->getId()] ?? $symbol->getElement(); |
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$elements[] = $svg; |
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} |
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// Dump all symbols |
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if (count($symbols) > 0) { |
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// Create symbols container element before the end of body tag or DOM |
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$node = DomUtil::createElement('svg', '', $doc |
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->getElementsByTagName('body') |
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->item(0) ?? $doc |
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); |
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$node->setAttribute('style', 'display:none'); |
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// Add format (duplicate previous node space) on debug mode |
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if ($twig->isDebug()) { |
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assert($node->previousSibling instanceof \DOMNode); |
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DomUtil::appendChildNode($node->previousSibling, $node); |
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} |
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uksort($symbols, 'strnatcasecmp'); |
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foreach ($symbols as $symbol) { |
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DomUtil::appendChildNode($symbol, $node); |
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if ($twig->isDebug()) { |
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assert($node->previousSibling instanceof \DOMNode); |
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DomUtil::appendChildNode($node->previousSibling, $node); |
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} |
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} |
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if ($twig->isDebug()) { |
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assert($node->parentNode instanceof \DOMNode); |
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DomUtil::appendChildNode( |
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$doc->createTextNode("\n"), |
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$node->parentNode |
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); |
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$this->logger->info('Converted {element_count} SVG elements into {symbol_count} SVG symbols', [ |
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'element_count' => count($elements), |
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'element_items' => array_map([DomUtil::class, 'toXml'], $elements), |
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'symbol_count' => count($symbols), |
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'symbol_items' => array_map([DomUtil::class, 'toXml'], $symbols), |
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]); |
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} |
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} elseif ($twig->isDebug()) { |
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$this->logger->debug('No SVG found'); |
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} |
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// Generate normalized HTML |
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return Html5Util::toHtml($doc); |
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} |
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public function embedSvg(Environment $twig, string $ident, array $options = []): string |
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{ |
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try { |
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$svg = $this->loader->resolve($ident, $options); |
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return (string) $svg; |
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} catch (LoaderException $err) { |
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$this->logger->error($err->getMessage(), ['exception' => $err]); |
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if ($twig->isDebug()) { |
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return sprintf('<!--{{ svg("%s") }}-->', $ident); |
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} |
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} |
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return ''; |
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} |
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} |
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ocubom /
twig-svg-extension
