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<?php |
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declare(strict_types=1); |
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namespace League\HTMLToMarkdown\Converter; |
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use League\HTMLToMarkdown\Configuration; |
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use League\HTMLToMarkdown\ConfigurationAwareInterface; |
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use League\HTMLToMarkdown\ElementInterface; |
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class HeaderConverter implements ConverterInterface, ConfigurationAwareInterface |
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{ |
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public const STYLE_ATX = 'atx'; |
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public const STYLE_SETEXT = 'setext'; |
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/** @var Configuration */ |
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protected $config; |
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public function setConfig(Configuration $config): void |
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{ |
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$this->config = $config; |
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} |
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public function convert(ElementInterface $element): string |
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{ |
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$level = (int) \substr($element->getTagName(), 1, 1); |
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$style = $this->config->getOption('header_style', self::STYLE_SETEXT); |
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if (\strlen($element->getValue()) === 0) { |
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return "\n"; |
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} |
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if (($level === 1 || $level === 2) && ! $element->isDescendantOf('blockquote') && $style === self::STYLE_SETEXT) { |
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return $this->createSetextHeader($level, $element->getValue()); |
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} |
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return $this->createAtxHeader($level, $element->getValue()); |
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} |
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/** |
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* @return string[] |
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*/ |
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public function getSupportedTags(): array |
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{ |
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return ['h1', 'h2', 'h3', 'h4', 'h5', 'h6']; |
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} |
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private function createSetextHeader(int $level, string $content): string |
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{ |
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$length = \function_exists('mb_strlen') ? \mb_strlen($content, 'utf-8') : \strlen($content); |
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$underline = $level === 1 ? '=' : '-'; |
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return $content . "\n" . \str_repeat($underline, $length) . "\n\n"; |
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} |
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private function createAtxHeader(int $level, string $content): string |
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{ |
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$prefix = \str_repeat('#', $level) . ' '; |
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return $prefix . $content . "\n\n"; |
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} |
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} |
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thephpleague /
html-to-markdown
