Add error message and new function for parsing error

Author: NikolaiProgramist

src/Differ/Translator.php

@@ -3,6 +3,7 @@
 namespace Differ\Translator;
 
 use Symfony\Component\Yaml\Yaml;
+use function Differ\Parser\parseError;
 
 function getJson(string $path): array
 {
@@ -19,11 +20,25 @@ function getFileContent(string $path): string
 {
     $dirPath = __DIR__;
 
+    // Colors for beautiful :)
+    $normalColor = "\x1b[0m";
+    $redColor = "\x1b[41m";
+
     if (str_starts_with($path, '/')) {
         $fullPath = $path;
     } else {
         $fullPath = "{$dirPath}/../../{$path}";
     }
 
+    if (!file_exists($fullPath)) {
+        $errorMessage = <<<DOC
+        {$redColor}ERROR!{$normalColor}
+        
+        File: "{$fullPath}" don't exists!
+        DOC;
+
+        parseError($errorMessage);
+    }
+
     return file_get_contents($fullPath);
 }

src/Parser.php

@@ -2,6 +2,7 @@
 
 namespace Differ\Parser;
 
+use JetBrains\PhpStorm\NoReturn;
 use function cli\line;
 use function Differ\Differ\genDiff;
 
@@ -10,3 +11,9 @@ function parse(string $pathToFile1, string $pathToFile2, string $format): void
     $resultString = genDiff($pathToFile1, $pathToFile2, $format);
     line('%s', $resultString);
 }
+
+#[NoReturn] function parseError(string $errorMessage): void
+{
+    line('%s', $errorMessage);
+    exit();
+}