Run bottleclip generator as subprocess

bottleclip.py

@@ -0,0 +1,38 @@
+import os
+import subprocess
+from os.path import abspath, join
+from tempfile import NamedTemporaryFile
+from typing import List
+
+
+def resource_dir() -> str:
+    p = os.getenv("BOTTLECLIP_RESOURCES")
+    assert p is not None
+    return p
+
+
+def list_icons() -> List[str]:
+    files = os.listdir(join(resource_dir(), "icons"))
+    return sorted(set(files) - {"README.md"})
+
+
+def create_stl(label: str, icon: str, ears: bool) -> NamedTemporaryFile:
+    icon_path = abspath(join(resource_dir(), "icons", icon))
+    ears_str = "true" if ears else "false"
+
+    scad = NamedTemporaryFile(dir=resource_dir(), suffix=".scad")
+    with open(join(resource_dir(), "bottle-clip.scad"), "rb") as f:
+        scad.write(f.read())
+    scad.write(b"\n\n")
+    scad.write(
+        f'bottle_clip(name="{label}", logo="{icon_path}", ears={ears_str});'.encode(
+            "utf-8"
+        )
+    )
+    scad.flush()
+
+    stl = NamedTemporaryFile(suffix=".scad")
+    subprocess.run(["openscad", scad.name, "--export-format", "binstl", "-o", stl.name])
+    stl.seek(0)
+
+    return stl