Add generaton cli entrypoint

example/client.py

@@ -0,0 +1,4 @@
+"""Echo client."""
+
+if __name__ == "__main__":
+    pass

example/schema.proto

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+syntax = "proto2";
+
+message EchoMsg {
+  required string value = 1;
+}
+
+service Example {
+  rpc Echo (EchoMsg) returns (EchoMsg) {}
+}

example/server.py

@@ -0,0 +1,4 @@
+"""Echo server."""
+
+if __name__ == "__main__":
+    pass

hrpc/hrpc.py

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+"""Simple RPC with Protobuf Services."""
+from argparse import ArgumentParser, FileType
+from shlex import split
+from subprocess import run
+
+
+def main():
+    """Command-line entrypoint."""
+    parser = ArgumentParser(description="Generate hrpc service and stubs")
+    parser.add_argument("protobuf", type=FileType("r"), help="protobuf file")
+    args = parser.parse_args()
+    generate(args)
+
+
+def generate(args):
+    """Generate services and stubs."""
+    cmd = (
+        "python -m grpc_tools.protoc "
+        "--purerpc_out=. "
+        "--python_out=. "
+        "-I. "
+        f"{args.protobuf.name}"
+    )
+    run(split(cmd))