winecommand: mount/unmount content in temp location

Author: EmoonX

bottles/backend/wine/winecommand.py

@@ -100,6 +100,7 @@ def __init__(
         pre_script: Optional[str] = None,
         post_script: Optional[str] = None,
         cwd: Optional[str] = None,
+        disc_image: Optional[str] = None,
     ):
         _environment = environment.copy()
         self.config = self._get_config(config)
@@ -113,7 +114,7 @@ def __init__(
             else self.config.Parameters.gamescope
         )
         self.command = self.get_cmd(
-            command, pre_script, post_script, environment=_environment
+            command, pre_script, post_script, disc_image, environment=_environment
         )
         self.terminal = terminal
         self.env = self.get_env(_environment)
@@ -489,6 +490,7 @@ def get_cmd(
         command,
         pre_script: Optional[str] = None,
         post_script: Optional[str] = None,
+        disc_image: Optional[str] = None,
         return_steam_cmd: bool = False,
         return_clean_cmd: bool = False,
         environment: Optional[dict] = None,
@@ -602,6 +604,15 @@ def get_cmd(
 
         if pre_script not in (None, ""):
             command = f"sh '{pre_script}' ; {command}"
+        
+        if disc_image is not None:
+            mount_point = "/tmp/bottles/disc"
+            command = f"""
+                flatpak-spawn --host mkdir -p '{mount_point}'
+                flatpak-spawn --host fuseiso '{disc_image}' '{mount_point}'
+                {command}
+                flatpak-spawn --host fusermount -uz '{mount_point}' # -z for lazy unmount
+            """
 
         return command