Generate __init__.py files

Pipfile

@@ -18,6 +18,6 @@ jinja2 = "*"
 python_version = "3.7"
 
 [scripts]
-plugin = "protoc --plugin=protoc-gen-custom=protoc-gen-betterpy.py --custom_out=."
+plugin = "protoc --plugin=protoc-gen-custom=protoc-gen-betterpy.py --custom_out=output"
 generate = "python betterproto/tests/generate.py"
 test = "pytest ./betterproto/tests"

betterproto/__init__.py

@@ -209,6 +209,10 @@ def string_field(number: int, default: str = "") -> Any:
     return dataclass_field(number, TYPE_STRING, default=default)
 
 
+def bytes_field(number: int, default: bytes = b"") -> Any:
+    return dataclass_field(number, TYPE_BYTES, default=default)
+
+
 def message_field(number: int) -> Any:
     return dataclass_field(number, TYPE_MESSAGE)
 

protoc-gen-betterpy.py

@@ -40,12 +40,13 @@ def py_type(
         message_type = descriptor.type_name.lstrip(".")
         if message_type.startswith(package):
             # This is the current package, which has nested types flattened.
-            message_type = message_type.lstrip(package).lstrip(".").replace(".", "")
+            message_type = (
+                f'"{message_type.lstrip(package).lstrip(".").replace(".", "")}"'
+            )
 
         if "." in message_type:
             # This is imported from another package. No need
             # to use a forward ref and we need to add the import.
-            message_type = message_type.strip('"')
             parts = message_type.split(".")
             imports.add(f"from .{'.'.join(parts[:-2])} import {parts[-2]}")
             message_type = f"{parts[-2]}.{parts[-1]}"
@@ -58,7 +59,7 @@ def py_type(
         #     file=sys.stderr,
         # )
 
-        return f'"{message_type}"'
+        return message_type
     elif descriptor.type == 12:
         return "bytes"
     else:
@@ -247,10 +248,28 @@ def generate_code(request, response):
         # Fill response
         f = response.file.add()
         # print(filename, file=sys.stderr)
-        f.name = filename + ".py"
+        f.name = filename.replace(".", os.path.sep) + ".py"
+
         # f.content = json.dumps(output, indent=2)
         f.content = template.render(description=output).rstrip("\n") + "\n"
 
+    inits = set([""])
+    for f in response.file:
+        # Ensure output paths exist
+        print(f.name, file=sys.stderr)
+        dirnames = os.path.dirname(f.name)
+        if dirnames:
+            os.makedirs(dirnames, exist_ok=True)
+            base = ""
+            for part in dirnames.split(os.path.sep):
+                base = os.path.join(base, part)
+                inits.add(base)
+
+    for base in inits:
+        init = response.file.add()
+        init.name = os.path.join(base, "__init__.py")
+        init.content = b""
+
 
 if __name__ == "__main__":
     # Read request message from stdin