Add support for <pre>

src/Text/Elements/ContentModel.php

@@ -139,6 +139,7 @@ class ContentModel
         'th'  => TableCell::class,
         'img' => Image::class,
         'a'   => Anchor::class,
+        'pre' => Pre::class,
     ];
 
     private DOMNode $node;

src/Text/Elements/Element.php

@@ -55,10 +55,15 @@ protected function isWhitespace(string $text): bool
         return strlen(trim($this->processWhitespace($text), "\n\r\t ")) === 0;
     }
 
+    protected function removeZwnjCodes(string $text): string
+    {
+        return str_replace($this->zwnjCodes(), '', $text);
+    }
+
     protected function processWhitespace(string $text): string
     {
         $text = rtrim($text);
-        $text = str_replace($this->zwnjCodes(), '', $text);
+        $text = $this->removeZwnjCodes($text);
         $text = (string) preg_replace("/[\\t\\n\\f\\r ]+/im", ' ', $text);
 
         return trim($text);

src/Text/Elements/Pre.php

@@ -0,0 +1,28 @@
+<?php declare(strict_types=1);
+
+namespace SupportPal\DomUtils\Text\Elements;
+
+use SupportPal\DomUtils\Text\Css\Breakline;
+use SupportPal\DomUtils\Text\Css\Content;
+use SupportPal\DomUtils\Text\Css\Margin;
+
+class Pre extends Element
+{
+    public function startNode(): ?Content
+    {
+        if ($this->previous instanceof Margin || $this->previous instanceof Breakline) {
+            return null;
+        }
+
+        return new Margin(1);
+    }
+
+    public function endNode(): ?Content
+    {
+        if ($this->previous instanceof Margin || $this->previous instanceof Breakline) {
+            return null;
+        }
+
+        return new Margin(1);
+    }
+}

src/Text/Elements/Text.php

@@ -24,8 +24,11 @@ public function endNode(): ?Content
             return null;
         }
 
-        $text = $this->processWhitespace($text);
-        $text = str_replace($this->nbspCodes(), ' ', $text);
+        if (! in_array($this->node->parentNode?->nodeName, ['pre'])) {
+            $text = $this->processWhitespace($text);
+        }
+
+        $text = trim(str_replace([$this->nbspCodes(), $this->zwnjCodes()], ' ', $text));
 
         if (empty($text)) {
             return null;

test/Text/TextParserTest.php

@@ -38,6 +38,7 @@ public static function toTextProvider(): iterable
         yield [10];
         yield [11];
         yield [12];
+        yield [13];
     }
 
     #[DataProvider('marginProvider')]

test/Text/fixtures/fixture13.html

@@ -0,0 +1,10 @@
+<p>Here is the code</p>
+<pre>
+#include &lt;stdlib.h&gt;
+#include &lt;stdio.h&gt;
+
+int main(){
+	return 0;
+};
+
+</pre>

test/Text/fixtures/fixture13.txt

@@ -0,0 +1,8 @@
+Here is the code
+
+#include <stdlib.h>
+#include <stdio.h>
+
+int main(){
+	return 0;
+};