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blogger2rangitaki/vendor/league/html-to-markdown/src/Converter/PreformattedConverter.php

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+<?php
+
+namespace League\HTMLToMarkdown\Converter;
+
+use League\HTMLToMarkdown\ElementInterface;
+
+class PreformattedConverter implements ConverterInterface
+{
+    /**
+     * @param ElementInterface $element
+     *
+     * @return string
+     */
+    public function convert(ElementInterface $element)
+    {
+        // Store the content of the code block in an array, one entry for each line
+
+        $markdown = '';
+
+        $code_content = html_entity_decode($element->getChildrenAsString());
+        $code_content = str_replace(array('<code>', '</code>'), '', $code_content);
+        $code_content = str_replace(array('<pre>', '</pre>'), '', $code_content);
+
+        $lines = preg_split('/\r\n|\r|\n/', $code_content);
+        $total = count($lines);
+
+        // If there's more than one line of code, prepend each line with four spaces and no backticks.
+        if ($total > 1 || $element->getTagName() === 'pre') {
+            // Remove the first and last line if they're empty
+            $first_line = trim($lines[0]);
+            $last_line = trim($lines[$total - 1]);
+            $first_line = trim($first_line, '&#xD;'); //trim XML style carriage returns too
+            $last_line = trim($last_line, '&#xD;');
+
+            if (empty($first_line)) {
+                array_shift($lines);
+            }
+
+            if (empty($last_line)) {
+                array_pop($lines);
+            }
+
+            $count = 1;
+            foreach ($lines as $line) {
+                $line = str_replace('&#xD;', '', $line);
+                $markdown .= '    ' . $line;
+                // Add newlines, except final line of the code
+                if ($count !== $total) {
+                    $markdown .= "\n";
+                }
+                $count++;
+            }
+            $markdown .= "\n";
+        } else {
+            // There's only one line of code. It's a code span, not a block. Just wrap it with backticks.
+            $markdown .= '`' . $lines[0] . '`';
+        }
+
+        if ($element->getTagName() === 'pre') {
+            $markdown = "\n" . $markdown . "\n";
+        }
+
+        return $markdown;
+    }
+
+    /**
+     * @return string[]
+     */
+    public function getSupportedTags()
+    {
+        return array('pre', 'code');
+    }
+}