3 files changed, 41 insertions, 3 deletions
diff --git a/src/application/mystic/forum/utils/FileUtils.php b/src/application/mystic/forum/utils/FileUtils.php
new file mode 100644
index 0000000..1910f0c
--- /dev/null
+++ b/src/application/mystic/forum/utils/FileUtils.php
@@ -0,0 +1,33 @@
+<?php
+declare(strict_types=1);
+
+namespace mystic\forum\utils;
+
+final class FileUtils {
+    use StaticClass;
+
+    private const MIME_FILE = __DIR__ . "/../../../assets/mimetypes";
+    public const DEFAULT_MIME_TYPE = "application/octet-stream";
+
+    private static ?array $extToMime = null;
+
+    private static function ensureMimeMapping(): void {
+        if (self::$extToMime !== null)
+            return;
+
+        self::$extToMime = [];
+        
+        $hFile = fopen(self::MIME_FILE, "r");
+        while (($ln = fgets($hFile)) !== false) {
+            [$mime, $extensions] = preg_split('/\t+/', $ln, 2);
+            $extensions = explode(" ", strtolower($extensions));
+            foreach ($extensions as $ext)
+                self::$extToMime[$ext] = $mime;
+        }
+    }
+
+    public static function getMimeTypeForExtension(string $extension, string $defaultMimeType = self::DEFAULT_MIME_TYPE): string {
+        self::ensureMimeMapping();
+        return self::$extToMime[strtolower($extension)] ?? $defaultMimeType;
+    }
+}
diff --git a/src/application/mystic/forum/utils/RequestUtils.php b/src/application/mystic/forum/utils/RequestUtils.php
index f6ce3a3..6599052 100644
--- a/src/application/mystic/forum/utils/RequestUtils.php
+++ b/src/application/mystic/forum/utils/RequestUtils.php
@@ -30,9 +30,10 @@ final class RequestUtils {
     public static function getRequiredField(string $field): string {
         $fieldValue = $_POST[$field] ?? null;
         if ($fieldValue === null) {
-            http_response_code(400);
-            Messaging::error("Missing required field $field");
-            exit;
+            //http_response_code(400);
+            //Messaging::error("Missing required field $field");
+            RequestUtils::triggerFormError("Missing required field '$field'");
+            //exit;
         }
         return $fieldValue;
     }
diff --git a/src/application/mystic/forum/utils/StringUtils.php b/src/application/mystic/forum/utils/StringUtils.php
index 7d4bf9d..fd38915 100644
--- a/src/application/mystic/forum/utils/StringUtils.php
+++ b/src/application/mystic/forum/utils/StringUtils.php
@@ -21,4 +21,8 @@ final class StringUtils {
 
         return ltrim($result, '_');
     }
+
+    public static function truncate(string $str, int $maxLength, string $ellipsis = "…"): string {
+        return mb_strimwidth($str, 0, $maxLength, $ellipsis);
+    }
 }