feature: add launch options

Signed-off-by: Mai Ooizumi <mai@imomoe.moe>

Author: Mai-Ooizumi

VScriptAutoPatcher/VScriptAutoPatcher.cpp

@@ -167,9 +167,9 @@ static void Pause()
 	FlushConsoleInputBuffer(h);
 }
 
-int main()
+int main(int argc, const char * const * argv)
 {
-	std::string filePath = "./bin/win64/vscript.dll";
+	std::string filePath;
 
 	SetConsoleTitleA("黄埔军校 VScript Patcher");
 
@@ -185,6 +185,20 @@ int main()
 
 	try
 	{
+		if (argc > 1)
+		{
+			filePath = argv[1];
+			if (!std::filesystem::exists(filePath))
+			{
+				std::cerr << "Specified file path does not exist." << std::endl;
+				return 2;
+			}
+		}
+		else
+		{
+			filePath = "./bin/win64/vscript.dll";
+		}
+
 		if (!std::filesystem::exists(filePath))
 		{
 			filePath = SelectPEFile();
@@ -195,10 +209,10 @@ int main()
 
 			PatchFile(filePath, { 0xBE, 0x01, 0x2A, 0x2A, 0x2A, 0x2B, 0xD6, 0x74, 0x2A, 0x3B, 0xD6 }, { 0xBE, 0x02 });
 		}
-		else
-		{
-			std::cerr << "File doesn't exist" << std::endl;
-			return 2;
+		else
+		{
+			std::cerr << "File doesn't exist" << std::endl;
+			return 2;
 		}
 
 	}