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<?php |
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/** |
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* (c) Steve Nebes <[email protected]> |
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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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declare(strict_types=1); |
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namespace DaisyDiff\Html; |
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use DaisyDiff\Html\Dom\ImageNode; |
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use DaisyDiff\Html\Dom\TagNode; |
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use DaisyDiff\Html\Dom\TextNode; |
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use DaisyDiff\Html\Modification\Modification; |
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use DaisyDiff\Html\Modification\ModificationType; |
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use DaisyDiff\Output\DiffOutputInterface; |
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use DaisyDiff\Xml\ContentHandlerInterface; |
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/** |
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* Takes a branch root and creates an HTML file for it. |
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* |
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* @internal |
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*/ |
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class HtmlSaxDiffOutput implements DiffOutputInterface |
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{ |
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/** @var ContentHandlerInterface */ |
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private $handler; |
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/** |
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* @param ContentHandlerInterface $handler |
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*/ |
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public function __construct(ContentHandlerInterface $handler) |
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{ |
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$this->handler = $handler; |
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} |
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/** |
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* @param TagNode $node |
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*/ |
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public function generateOutput(TagNode $node): void |
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{ |
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if ('img' !== $node->getQName() && 'body' !== $node->getQName()) { |
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$this->handler->startElement($node->getQName(), $node->getAttributes()); |
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} |
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$newStarted = false; |
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$remStarted = false; |
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$changeStarted = false; |
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$conflictStarted = false; |
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$changeText = ''; |
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foreach ($node as $child) { |
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if ($child instanceof TagNode) { |
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if ($newStarted) { |
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$this->handler->endElement('ins'); |
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$newStarted = false; |
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} elseif ($changeStarted) { |
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$this->handler->endElement('span'); |
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$changeStarted = false; |
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} elseif ($remStarted) { |
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$this->handler->endElement('del'); |
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$remStarted = false; |
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} elseif ($conflictStarted) { |
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$this->handler->endElement('span'); |
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$conflictStarted = false; |
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} |
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$this->generateOutput($child); |
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} elseif ($child instanceof TextNode) { |
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$mod = $child->getModification(); |
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if ($newStarted && ($mod->getOutputType() !== ModificationType::ADDED || $mod->isFirstOfId())) { |
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$this->handler->endElement('ins'); |
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$newStarted = false; |
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} elseif ( |
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$changeStarted && ( |
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$mod->getOutputType() !== ModificationType::CHANGED || |
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$mod->getChanges() !== $changeText || |
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$mod->isFirstOfId() |
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) |
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) { |
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$this->handler->endElement('span'); |
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$changeStarted = false; |
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} elseif ($remStarted && ($mod->getOutputType() !== ModificationType::REMOVED || $mod->isFirstOfId())) { |
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$this->handler->endElement('del'); |
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$remStarted = false; |
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} elseif ( |
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$conflictStarted && |
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($mod->getOutputType() !== ModificationType::CONFLICT || $mod->isFirstOfId()) |
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) { |
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$this->handler->endElement('span'); |
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$conflictStarted = false; |
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} |
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// No else because a removed part can just be closed and a new part can start. |
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if (!$newStarted && $mod->getOutputType() === ModificationType::ADDED) { |
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$attrs = ['class' => 'diff-html-added']; |
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$this->handler->startElement('ins', $attrs); |
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$newStarted = true; |
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} elseif (!$changeStarted && $mod->getOutputType() === ModificationType::CHANGED) { |
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$attrs = ['class' => 'diff-html-changed']; |
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$this->handler->startElement('span', $attrs); |
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$changeStarted = true; |
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$changeText = $mod->getChanges(); |
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} elseif (!$remStarted && $mod->getOutputType() === ModificationType::REMOVED) { |
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$attrs = ['class' => 'diff-html-removed']; |
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$this->handler->startElement('del', $attrs); |
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$remStarted = true; |
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} elseif (!$conflictStarted && $mod->getOutputType() === ModificationType::CONFLICT) { |
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$attrs = ['class' => 'diff-html-conflict']; |
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$this->handler->startElement('span', $attrs); |
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$conflictStarted = true; |
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} |
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if ($child instanceof ImageNode) { |
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$this->writeImage($child); |
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} else { |
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$this->handler->characters($child->getText()); |
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} |
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} |
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} |
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if ($newStarted) { |
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$this->handler->endElement('ins'); |
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} elseif ($changeStarted) { |
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$this->handler->endElement('span'); |
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} elseif ($remStarted) { |
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$this->handler->endElement('del'); |
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} elseif ($conflictStarted) { |
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$this->handler->endElement('span'); |
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} |
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if ('img' !== $node->getQName() && 'body' !== $node->getQName()) { |
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$this->handler->endElement($node->getQName()); |
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} |
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} |
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/** |
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* @param ImageNode $imageNode |
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*/ |
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private function writeImage(ImageNode $imageNode): void |
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{ |
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$attrs = $imageNode->getAttributes(); |
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if ($imageNode->getModification()->getOutputType() === ModificationType::REMOVED) { |
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$attrs['changeType'] = 'diff-removed-image'; |
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} elseif ($imageNode->getModification()->getOutputType() === ModificationType::ADDED) { |
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$attrs['changeType'] = 'diff-added-image'; |
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} elseif ($imageNode->getModification()->getOutputType() === ModificationType::CONFLICT) { |
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$attrs['changeType'] = 'diff-conflict-image'; |
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} |
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$this->handler->startElement('img', $attrs); |
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$this->handler->endElement('img'); |
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} |
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} |
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snebes /
php-daisydiff
