Move binary mounting to arguments

We finally moved all the hardcoded system values out of the tool.

src/smgdc/app.py

@@ -2,16 +2,34 @@
 
 import argparse
 import configparser
+import dataclasses
+import os
 import pathlib
 
 from . import validate
 from .validate import LinuxBinary, PlatformBinary, WindowsBinary
 
 
+@dataclasses.dataclass
+class BinaryMountSpec:
+    # a "mount" specification, described as a pathsep-separated pair of paths
+    # (we can't use colons across all platforms because Windows)
+    file_path: pathlib.Path
+    visible_path: pathlib.Path
+
+    def __init__(self, arg: str):
+        (self.file_path, self.visible_path) = map(
+            pathlib.Path, arg.split(os.pathsep) if os.pathsep in arg else (arg, arg)
+        )
+
+
 def main() -> None:
     parser = argparse.ArgumentParser()
 
     parser.add_argument("validation_path", metavar="config", type=pathlib.Path)
+    parser.add_argument(
+        "--add-binary", dest="bin_mounts", type=BinaryMountSpec, action="append"
+    )
 
     args = parser.parse_args()
 
@@ -21,22 +39,16 @@ def main() -> None:
     else:
         validation_files.add(args.validation_path)
 
-    bin_mounts = {
-        "232250/tf/bin/server.dll": "server.dll",
-        "232250/tf/bin/server_srv.so": "server_srv.so",
-    }
-
     candidate_targets: list[PlatformBinary] = []
-    for mount, bin in bin_mounts.items():
-        bin_path = pathlib.Path(bin)
+    for mount in args.bin_mounts:
         loaded_bin: PlatformBinary
-        if bin_path.suffix == ".so":
-            loaded_bin = LinuxBinary(bin_path)
-        elif bin_path.suffix == ".dll":
-            loaded_bin = WindowsBinary(bin_path)
+        if mount.file_path.suffix == ".so":
+            loaded_bin = LinuxBinary(mount.file_path)
+        elif mount.file_path.suffix == ".dll":
+            loaded_bin = WindowsBinary(mount.file_path)
         else:
-            raise ValueError(f"Unknown bin suffix {bin_path.suffix}")
-        loaded_bin.path = pathlib.Path(mount)
+            raise ValueError(f"Unknown bin suffix {mount.file_path.suffix}")
+        loaded_bin.path = mount.visible_path
         candidate_targets.append(loaded_bin)
 
     for validation_file in sorted(validation_files):