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<?php declare(strict_types=1); |
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namespace Bigwhoop\Trumpet\Config\Params; |
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use Bigwhoop\Trumpet\Config\ConfigException; |
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use Bigwhoop\Trumpet\Config\Presentation; |
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use Bigwhoop\Trumpet\Config\Slides; |
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final class SlidesParam implements Param |
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{ |
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/** |
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* {@inheritdoc} |
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*/ |
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public function parse($value, Presentation $presentation) |
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{ |
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if (!is_string($value)) { |
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throw new ConfigException('Slides must be a string.'); |
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} |
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$text = $this->normalizeNewLines($value); |
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$lines = explode("\n", $text); |
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if (empty($lines)) { |
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throw new ConfigException('Slides must not be empty.'); |
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} |
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$slides = new Slides(); |
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foreach ($lines as $line) { |
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if ($this->isHeader1($line)) { |
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$slides->addContentToNewSlide($line); |
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$slides->addBlankSlide(); |
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} elseif ($this->isHeader2($line)) { |
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$slides->addContentToNewSlide($line); |
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} else { |
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$slides->addContentToCurrentSlide($line); |
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} |
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} |
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$slides->trim(); |
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$presentation->slides = $slides; |
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} |
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/** |
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* @param string $line |
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* |
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* @return bool |
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*/ |
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private function isHeader1($line) |
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{ |
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return substr($line, 0, 2) === '# '; |
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} |
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/** |
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* @param string $line |
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* |
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* @return bool |
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*/ |
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private function isHeader2($line) |
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{ |
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return substr($line, 0, 3) === '## '; |
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} |
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/** |
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* @param string $text |
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* |
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* @return string |
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*/ |
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private function normalizeNewLines($text) |
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{ |
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$text = str_replace("\r", '', $text); |
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return $text; |
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} |
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} |
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bigwhoop /
trumpet
