Exports: Updated plaintext export to use new converter

Author: ssddanbrown

app/Exports/ExportFormatter.php

@@ -11,6 +11,7 @@
 use BookStack\Uploads\ImageService;
 use BookStack\Util\CspService;
 use BookStack\Util\HtmlDocument;
+use BookStack\Util\HtmlToPlainText;
 use DOMElement;
 use Exception;
 use Throwable;
@@ -242,32 +243,21 @@ protected function containHtml(string $htmlContent): string
 
     /**
      * Converts the page contents into simple plain text.
-     * This method filters any bad looking content to provide a nice final output.
+     * We re-generate the plain text from HTML at this point, post-page-content rendering.
      */
     public function pageToPlainText(Page $page, bool $pageRendered = false, bool $fromParent = false): string
     {
         $html = $pageRendered ? $page->html : (new PageContent($page))->render();
-        // Add proceeding spaces before tags so spaces remain between
-        // text within elements after stripping tags.
-        $html = str_replace('<', " <", $html);
-        $text = trim(strip_tags($html));
-        // Replace multiple spaces with single spaces
-        $text = preg_replace('/ {2,}/', ' ', $text);
-        // Reduce multiple horrid whitespace characters.
-        $text = preg_replace('/(\x0A|\xA0|\x0A|\r|\n){2,}/su', "\n\n", $text);
-        $text = html_entity_decode($text);
-        // Add title
-        $text = $page->name . ($fromParent ? "\n" : "\n\n") . $text;
-
-        return $text;
+        $contentText = (new HtmlToPlainText())->convert($html);
+        return $page->name . ($fromParent ? "\n" : "\n\n") . $contentText;
     }
 
     /**
      * Convert a chapter into a plain text string.
      */
     public function chapterToPlainText(Chapter $chapter): string
     {
-        $text = $chapter->name . "\n" . $chapter->description;
+        $text = $chapter->name . "\n" . $chapter->descriptionInfo()->getPlain();
         $text = trim($text) . "\n\n";
 
         $parts = [];

tests/Exports/TextExportTest.php

@@ -52,7 +52,7 @@ public function test_book_text_export_format()
         $resp = $this->asEditor()->get($entities['book']->getUrl('/export/plaintext'));
 
         $expected = "Export Book\nThis is a book with stuff to export\n\nExport chapter\nA test chapter to be exported\nIt has loads of info within\n\n";
-        $expected .= "My wonderful page!\nMy great page Full of great stuff";
+        $expected .= "My wonderful page!\nMy great page\nFull of great stuff";
         $resp->assertSee($expected);
     }
 
@@ -82,7 +82,7 @@ public function test_chapter_text_export_format()
         $resp = $this->asEditor()->get($entities['book']->getUrl('/export/plaintext'));
 
         $expected = "Export chapter\nA test chapter to be exported\nIt has loads of info within\n\n";
-        $expected .= "My wonderful page!\nMy great page Full of great stuff";
+        $expected .= "My wonderful page!\nMy great page\nFull of great stuff";
         $resp->assertSee($expected);
     }
 }