Refactor CLI argument parsing to use -- delimiter

Replace `--args="..."` flag with standard `--` delimiter for passing arguments
to the target executable. This follows conventional CLI patterns where
arguments after `--` are forwarded directly to the spawned process rather
than being parsed by Syringe.

Changes:
- Update usage message to reflect new `--` syntax
- Modify `parse_command_line` to recognize `--` as the delimiter
- Append all arguments after `--` to the game arguments string
- Remove deprecated `--args=` flag handling

Signed-off-by: 舰队的偶像-岛风酱 <frg2089@outlook.com>

Author: frg2089

Main.cpp

@@ -84,7 +84,7 @@ int Run(const std::vector<std::string>& arguments)
     {
         MessageBoxA(
             nullptr, "Syringe cannot be run like that.\n\n"
-            "Usage:\nSyringe.exe <exe name> [-i=<injectedfile.dll> ...] [--args=\"<arguments>\"]",
+            "Usage:\nSyringe.exe <exe name> [-i=<injectedfile.dll> ...] [-- <arguments>]",
             VersionString, MB_OK | MB_ICONINFORMATION);
 
         Log::WriteLine(

README.md

@@ -30,10 +30,10 @@ syringe.exe game.exe
 
 ### Passing Arguments to the Target Executable
 
-Use `--args="..."` to provide arguments for the launched process:
+Use `--` as a delimiter to pass arguments to the launched process. All arguments after `--` will be forwarded directly to the target executable:
 
 ```
-syringe.exe game.exe --args="-CD. -SPAWN"
+syringe.exe game.exe -- -CD. -SPAWN
 ```
 
 ### DLL Injection Behavior

Support.h

@@ -28,8 +28,6 @@ inline auto trim(std::string_view string) noexcept
 
 inline auto parse_command_line(const std::vector<std::string>& arguments)
 {
-    static constexpr std::string_view ARGS_FLAG = "--args=";
-
     struct argument_set
     {
         std::vector<std::string> syringe_arguments;
@@ -45,6 +43,8 @@ inline auto parse_command_line(const std::vector<std::string>& arguments)
     // First non-flag argument becomes executable name
     bool exe_found = false;
 
+    bool exe_arguments = false;
+    
     for (const auto& arg : arguments)
     {
         // executable name: first argument not starting with '-'
@@ -55,22 +55,30 @@ inline auto parse_command_line(const std::vector<std::string>& arguments)
             continue;
         }
 
-        // game arguments: --args="blob"
-        if (arg.starts_with(ARGS_FLAG))
+        if (arg == "--")
         {
-            // extract after --args=
-            std::string blob = arg.substr(ARGS_FLAG.size());
-            ret.game_arguments = blob;
+            exe_arguments = true;
             continue;
         }
 
-        // Syringe arguments
-        ret.syringe_arguments.push_back(arg);
+        if (exe_arguments)
+        {
+            // game arguments
+            ret.game_arguments += " ";
+            ret.game_arguments += arg;
+        }
+        else
+        {
+            // Syringe arguments
+            ret.syringe_arguments.push_back(arg);
+        }
     }
 
     if (!exe_found || ret.executable_name.empty())
         throw invalid_command_arguments{};
 
+    ret.game_arguments = ret.game_arguments.substr(1);
+
     return ret;
 }