Accept empty stdin (close #2337) (#2346)

[etc/vim.git] / src / blackd / __init__.py

diff --git a/src/blackd/__init__.py b/src/blackd/__init__.py
index f77a5e8e7be49c0a5b881e22fe4401b5a36f221e..3e2a7e7c30f3eb3ed18d51bd18b4322069b588c3 100644 (file)
--- a/src/blackd/__init__.py
+++ b/src/blackd/__init__.py
@@ -20,6 +20,7 @@ except ImportError as ie:
     sys.exit(-1)
 
 import black
+from black.concurrency import maybe_install_uvloop
 import click
 
 from _black_version import version as __version__
@@ -32,6 +33,7 @@ PROTOCOL_VERSION_HEADER = "X-Protocol-Version"
 LINE_LENGTH_HEADER = "X-Line-Length"
 PYTHON_VARIANT_HEADER = "X-Python-Variant"
 SKIP_STRING_NORMALIZATION_HEADER = "X-Skip-String-Normalization"
+SKIP_MAGIC_TRAILING_COMMA = "X-Skip-Magic-Trailing-Comma"
 FAST_OR_SAFE_HEADER = "X-Fast-Or-Safe"
 DIFF_HEADER = "X-Diff"
 
@@ -40,6 +42,7 @@ BLACK_HEADERS = [
     LINE_LENGTH_HEADER,
     PYTHON_VARIANT_HEADER,
     SKIP_STRING_NORMALIZATION_HEADER,
+    SKIP_MAGIC_TRAILING_COMMA,
     FAST_OR_SAFE_HEADER,
     DIFF_HEADER,
 ]
@@ -114,6 +117,9 @@ async def handle(request: web.Request, executor: Executor) -> web.Response:
         skip_string_normalization = bool(
             request.headers.get(SKIP_STRING_NORMALIZATION_HEADER, False)
         )
+        skip_magic_trailing_comma = bool(
+            request.headers.get(SKIP_MAGIC_TRAILING_COMMA, False)
+        )
         fast = False
         if request.headers.get(FAST_OR_SAFE_HEADER, "safe") == "fast":
             fast = True
@@ -122,6 +128,7 @@ async def handle(request: web.Request, executor: Executor) -> web.Response:
             is_pyi=pyi,
             line_length=line_length,
             string_normalization=not skip_string_normalization,
+            magic_trailing_comma=not skip_magic_trailing_comma,
         )
         req_bytes = await request.content.read()
         charset = request.charset if request.charset is not None else "utf8"
@@ -196,6 +203,7 @@ def parse_python_variant_header(value: str) -> Tuple[bool, Set[black.TargetVersi
 
 
 def patched_main() -> None:
+    maybe_install_uvloop()
     freeze_support()
     black.patch_click()
     main()