[blackd] Support `py36`-style values in X-Python-Variant header (#979)

[etc/vim.git] / blackd.py

diff --git a/blackd.py b/blackd.py
index 2e3ce60be2e9c14668bc0bdf8402f06e7f2bbd21..37fcec31ec10b092a8a273dc03a5d59921d3464c 100644 (file)
--- a/blackd.py
+++ b/blackd.py
@@ -17,7 +17,6 @@ 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_NUMERIC_UNDERSCORE_NORMALIZATION_HEADER = "X-Skip-Numeric-Underscore-Normalization"
 FAST_OR_SAFE_HEADER = "X-Fast-Or-Safe"
 
 BLACK_HEADERS = [
@@ -25,7 +24,6 @@ BLACK_HEADERS = [
     LINE_LENGTH_HEADER,
     PYTHON_VARIANT_HEADER,
     SKIP_STRING_NORMALIZATION_HEADER,
-    SKIP_NUMERIC_UNDERSCORE_NORMALIZATION_HEADER,
     FAST_OR_SAFE_HEADER,
 ]
 
@@ -95,9 +93,6 @@ async def handle(request: web.Request, executor: Executor) -> web.Response:
         skip_string_normalization = bool(
             request.headers.get(SKIP_STRING_NORMALIZATION_HEADER, False)
         )
-        skip_numeric_underscore_normalization = bool(
-            request.headers.get(SKIP_NUMERIC_UNDERSCORE_NORMALIZATION_HEADER, False)
-        )
         fast = False
         if request.headers.get(FAST_OR_SAFE_HEADER, "safe") == "fast":
             fast = True
@@ -106,7 +101,6 @@ async def handle(request: web.Request, executor: Executor) -> web.Response:
             is_pyi=pyi,
             line_length=line_length,
             string_normalization=not skip_string_normalization,
-            numeric_underscore_normalization=not skip_numeric_underscore_normalization,
         )
         req_bytes = await request.content.read()
         charset = request.charset if request.charset is not None else "utf8"
@@ -133,13 +127,13 @@ def parse_python_variant_header(value: str) -> Tuple[bool, Set[black.TargetVersi
     else:
         versions = set()
         for version in value.split(","):
-            tag = "cpy"
-            if version.startswith("cpy"):
-                version = version[len("cpy") :]
-            elif version.startswith("pypy"):
-                tag = "pypy"
-                version = version[len("pypy") :]
-            major_str, *rest = version.split(".")
+            if version.startswith("py"):
+                version = version[len("py") :]
+            if "." in version:
+                major_str, *rest = version.split(".")
+            else:
+                major_str = version[0]
+                rest = [version[1:]] if len(version) > 1 else []
             try:
                 major = int(major_str)
                 if major not in (2, 3):
@@ -153,16 +147,12 @@ def parse_python_variant_header(value: str) -> Tuple[bool, Set[black.TargetVersi
                 else:
                     # Default to lowest supported minor version.
                     minor = 7 if major == 2 else 3
-                version_str = f"{tag.upper()}{major}{minor}"
-                # If PyPY is the same as CPython in some version, use
-                # the corresponding CPython version.
-                if tag == "pypy" and not hasattr(black.TargetVersion, version_str):
-                    version_str = f"CPY{major}{minor}"
+                version_str = f"PY{major}{minor}"
                 if major == 3 and not hasattr(black.TargetVersion, version_str):
                     raise InvalidVariantHeader(f"3.{minor} is not supported")
                 versions.add(black.TargetVersion[version_str])
             except (KeyError, ValueError):
-                raise InvalidVariantHeader("expected e.g. '3.7', 'pypy3.5'")
+                raise InvalidVariantHeader("expected e.g. '3.7', 'py3.5'")
         return False, versions