First Commit

vendor/league/html-to-markdown/src/Converter/EmphasisConverter.php

@@ -0,0 +1,72 @@
+<?php
+
+declare(strict_types=1);
+
+namespace League\HTMLToMarkdown\Converter;
+
+use League\HTMLToMarkdown\Configuration;
+use League\HTMLToMarkdown\ConfigurationAwareInterface;
+use League\HTMLToMarkdown\ElementInterface;
+
+class EmphasisConverter implements ConverterInterface, ConfigurationAwareInterface
+{
+    /** @var Configuration */
+    protected $config;
+
+    protected function getNormTag(?ElementInterface $element): string
+    {
+        if ($element !== null && ! $element->isText()) {
+            $tag = $element->getTagName();
+            if ($tag === 'i' || $tag === 'em') {
+                return 'em';
+            }
+
+            if ($tag === 'b' || $tag === 'strong') {
+                return 'strong';
+            }
+        }
+
+        return '';
+    }
+
+    public function setConfig(Configuration $config): void
+    {
+        $this->config = $config;
+    }
+
+    public function convert(ElementInterface $element): string
+    {
+        $tag   = $this->getNormTag($element);
+        $value = $element->getValue();
+
+        if (! \trim($value)) {
+            return $value;
+        }
+
+        if ($tag === 'em') {
+            $style = $this->config->getOption('italic_style');
+        } else {
+            $style = $this->config->getOption('bold_style');
+        }
+
+        $prefix = \ltrim($value) !== $value ? ' ' : '';
+        $suffix = \rtrim($value) !== $value ? ' ' : '';
+
+        /* If this node is immediately preceded or followed by one of the same type don't emit
+         * the start or end $style, respectively. This prevents <em>foo</em><em>bar</em> from
+         * being converted to *foo**bar* which is incorrect. We want *foobar* instead.
+         */
+        $preStyle  = $this->getNormTag($element->getPreviousSibling()) === $tag ? '' : $style;
+        $postStyle = $this->getNormTag($element->getNextSibling()) === $tag ? '' : $style;
+
+        return $prefix . $preStyle . \trim($value) . $postStyle . $suffix;
+    }
+
+    /**
+     * @return string[]
+     */
+    public function getSupportedTags(): array
+    {
+        return ['em', 'i', 'strong', 'b'];
+    }
+}