refactor: format rendering (#4229)

actions/DisplayAction.php

@@ -160,9 +160,15 @@ private function createResponse(Request $request, BridgeAbstract $bridge, string
         $format->setLastModified($now);
         $headers = [
             'last-modified' => gmdate('D, d M Y H:i:s ', $now) . 'GMT',
-            'content-type'  => $format->getMimeType() . '; charset=' . $format->getCharset(),
+            'content-type'  => $format->getMimeType() . '; charset=UTF-8',
         ];
-        return new Response($format->stringify(), 200, $headers);
+        $body = $format->render();
+
+        // This is supposed to remove non-utf8 byte sequences, but I'm unsure if it works
+        ini_set('mbstring.substitute_character', 'none');
+        $body = mb_convert_encoding($body, 'UTF-8', 'UTF-8');
+
+        return new Response($body, 200, $headers);
     }
 
     private function createFeedItemFromException($e, BridgeAbstract $bridge): array

formats/AtomFormat.php

@@ -14,9 +14,9 @@ class AtomFormat extends FormatAbstract
     protected const ATOM_NS = 'http://www.w3.org/2005/Atom';
     protected const MRSS_NS = 'http://search.yahoo.com/mrss/';
 
-    public function stringify()
+    public function render(): string
     {
-        $document = new \DomDocument('1.0', $this->getCharset());
+        $document = new \DomDocument('1.0', 'UTF-8');
         $document->formatOutput = true;
 
         $feedUrl = get_current_url();
@@ -86,8 +86,6 @@ public function stringify()
         $author->appendChild($authorName);
         $authorName->appendChild($document->createTextNode($feedAuthor));
 
-
-
         foreach ($this->getItems() as $item) {
             $itemArray = $item->toArray();
             $entryTimestamp = $item->getTimestamp();
@@ -204,10 +202,6 @@ public function stringify()
         }
 
         $xml = $document->saveXML();
-
-        // Remove invalid characters
-        ini_set('mbstring.substitute_character', 'none');
-        $xml = mb_convert_encoding($xml, $this->getCharset(), 'UTF-8');
         return $xml;
     }
 }

formats/HtmlFormat.php

@@ -4,7 +4,7 @@ class HtmlFormat extends FormatAbstract
 {
     const MIME_TYPE = 'text/html';
 
-    public function stringify()
+    public function render(): string
     {
         // This query string is url encoded
         $queryString = $_SERVER['QUERY_STRING'];
@@ -52,16 +52,12 @@ public function stringify()
 
         $html = render_template(__DIR__ . '/../templates/html-format.html.php', [
             'bridge_name'   => $bridgeName,
-            'charset'       => $this->getCharset(),
             'title'         => $feedArray['name'],
             'formats'       => $formats,
             'uri'           => $feedArray['uri'],
             'items'         => $items,
             'donation_uri'  => $donationUri,
         ]);
-        // Remove invalid characters
-        ini_set('mbstring.substitute_character', 'none');
-        $html = mb_convert_encoding($html, $this->getCharset(), 'UTF-8');
         return $html;
     }
 }

formats/JsonFormat.php

@@ -23,7 +23,7 @@ class JsonFormat extends FormatAbstract
         'uid',
     ];
 
-    public function stringify()
+    public function render(): string
     {
         $feedArray = $this->getFeed();
 

formats/MrssFormat.php

@@ -32,9 +32,9 @@ class MrssFormat extends FormatAbstract
     protected const ATOM_NS = 'http://www.w3.org/2005/Atom';
     protected const MRSS_NS = 'http://search.yahoo.com/mrss/';
 
-    public function stringify()
+    public function render(): string
     {
-        $document = new \DomDocument('1.0', $this->getCharset());
+        $document = new \DomDocument('1.0', 'UTF-8');
         $document->formatOutput = true;
 
         $feed = $document->createElement('rss');
@@ -198,9 +198,6 @@ public function stringify()
         }
 
         $xml = $document->saveXML();
-        // Remove invalid non-UTF8 characters
-        ini_set('mbstring.substitute_character', 'none');
-        $xml = mb_convert_encoding($xml, $this->getCharset(), 'UTF-8');
         return $xml;
     }
 }

formats/PlaintextFormat.php

@@ -4,16 +4,13 @@ class PlaintextFormat extends FormatAbstract
 {
     const MIME_TYPE = 'text/plain';
 
-    public function stringify()
+    public function render(): string
     {
         $feed = $this->getFeed();
         foreach ($this->getItems() as $item) {
             $feed['items'][] = $item->toArray();
         }
         $text = print_r($feed, true);
-        // Remove invalid non-UTF8 characters
-        ini_set('mbstring.substitute_character', 'none');
-        $text = mb_convert_encoding($text, $this->getCharset(), 'UTF-8');
         return $text;
     }
 }

formats/SfeedFormat.php

@@ -4,7 +4,7 @@ class SfeedFormat extends FormatAbstract
 {
     const MIME_TYPE = 'text/plain';
 
-    public function stringify()
+    public function render(): string
     {
         $text = '';
         foreach ($this->getItems() as $item) {
@@ -26,13 +26,6 @@ public function stringify()
             );
         }
 
-        // Remove invalid non-UTF8 characters
-        ini_set('mbstring.substitute_character', 'none');
-        $text = mb_convert_encoding(
-            $text,
-            $this->getCharset(),
-            'UTF-8'
-        );
         return $text;
     }
 

index.php

@@ -62,8 +62,11 @@
 
 $cacheFactory = new CacheFactory($logger);
 
-// Uncomment this for debug logging
-// $logger->addHandler(new StreamHandler('/tmp/rss-bridge.txt', Logger::DEBUG));
+// Uncomment this for info logging to fs
+// $logger->addHandler(new StreamHandler('/tmp/rss-bridge.txt', Logger::INFO));
+
+// Uncomment this for debug logging to fs
+// $logger->addHandler(new StreamHandler('/tmp/rss-bridge-debug.txt', Logger::DEBUG));
 
 if (Debug::isEnabled()) {
     $logger->addHandler(new ErrorLogHandler(Logger::DEBUG));

lib/FormatAbstract.php

@@ -8,11 +8,10 @@ abstract class FormatAbstract
 
     protected array $feed = [];
     protected array $items = [];
-    protected string $charset = 'UTF-8';
 
     protected int $lastModified;
 
-    abstract public function stringify();
+    abstract public function render(): string;
 
     public function setFeed(array $feed)
     {
@@ -50,16 +49,6 @@ public function getMimeType(): string
         return static::MIME_TYPE;
     }
 
-    public function setCharset(string $charset)
-    {
-        $this->charset = $charset;
-    }
-
-    public function getCharset(): string
-    {
-        return $this->charset;
-    }
-
     public function setLastModified(int $lastModified)
     {
         $this->lastModified = $lastModified;

templates/html-format.html.php

@@ -1,7 +1,7 @@
 <!DOCTYPE html>
 <html lang="en">
 <head>
-    <meta charset="<?= $charset ?>">
+    <meta charset="UTF-8">
     <meta name="viewport" content="width=device-width, initial-scale=1.0"/ >
     <meta name="description" content="RSS-Bridge" />
     <title><?= e($title) ?></title>

tests/FormatTest.php

@@ -58,7 +58,7 @@ public function testBridge()
 
 class TestFormat extends \FormatAbstract
 {
-    public function stringify()
+    public function render(): string
     {
     }
 }

tests/Formats/BaseFormatTest.php

@@ -64,6 +64,6 @@ protected function formatData(string $formatName, \stdClass $sample): string
         $format->setFeed($sample->meta);
         $format->setLastModified(strtotime('2000-01-01 12:00:00 UTC'));
 
-        return $format->stringify();
+        return $format->render();
     }
 }