Update to not crash if not writable

src/Core/Misc/PlogLogger.cpp

@@ -48,29 +48,38 @@ class EtternaFormatter {
 };
 
 PlogLogger::PlogLogger() {
+    // Console Appender. One for windows, and another for other operating systems.
+    #ifdef _WIN32
+        static plog::WindowsAppender<EtternaFormatter> consoleAppender;
+    #else
+        static plog::ColorConsoleAppender<EtternaFormatter> consoleAppender;
+    #endif
+    plog::init(plog::Severity::info, &consoleAppender);
+
+
     // Get current time for log file name. Format: YYYY_MM_DD-HH_MM_SS.log
     char timeString[20]; // Date and time portion only
     std::time_t t = std::time(nullptr);
     std::strftime(timeString, sizeof(timeString), "%Y_%m_%d-%H_%M_%S", std::localtime(&t));
     auto logDirectory = Core::Platform::getAppDirectory() / "Logs";
 
-    // Ensure log directory exists before initializing logger.
-    if(!ghc::filesystem::exists(logDirectory))
-        ghc::filesystem::create_directory(logDirectory);
+    namespace fs = ghc::filesystem;
+    // Ensure log directory exists and is writable before initializing logger.
+    auto appDirPerms = fs::status(Core::Platform::getAppDirectory()).permissions();
+    auto writable = (appDirPerms & (fs::perms::owner_write )) != fs::perms::none;
+
+    // If not writable, only output to console.
+    if(!writable)
+        return;
+
+    if(!fs::exists(logDirectory))
+        fs::create_directory(logDirectory);
 
     auto logFilePath = logDirectory / fmt::format(FMT_STRING("{}.log"), timeString);
 
     // File Appender
     static plog::RollingFileAppender<EtternaFormatter, plog::UTF8Converter> rollingFileAppender{logFilePath.c_str()};
     plog::init(plog::Severity::info, &rollingFileAppender);
-
-    // Console Appender. One for windows, and another for other operating systems.
-    #ifdef _WIN32
-        static plog::WindowsAppender<EtternaFormatter> consoleAppender;
-    #else
-        static plog::ColorConsoleAppender<EtternaFormatter> consoleAppender;
-    #endif
-    plog::init(plog::Severity::info, &consoleAppender);
 }
 
 void PlogLogger::log(Core::ILogger::Severity logLevel, const std::string_view message) {