import asyncio
+import logging
from concurrent.futures import Executor, ProcessPoolExecutor
-from datetime import datetime
+from datetime import datetime, timezone
from functools import partial
-import logging
from multiprocessing import freeze_support
from typing import Set, Tuple
-from aiohttp import web
-import aiohttp_cors
-import black
+try:
+ from aiohttp import web
+
+ from .middlewares import cors
+except ImportError as ie:
+ raise ImportError(
+ f"aiohttp dependency is not installed: {ie}. "
+ + "Please re-install black with the '[d]' extra install "
+ + "to obtain aiohttp_cors: `pip install black[d]`"
+ ) from None
+
import click
+import black
from _black_version import version as __version__
+from black.concurrency import maybe_install_uvloop
# This is used internally by tests to shut down the server prematurely
_stop_signal = asyncio.Event()
PROTOCOL_VERSION_HEADER = "X-Protocol-Version"
LINE_LENGTH_HEADER = "X-Line-Length"
PYTHON_VARIANT_HEADER = "X-Python-Variant"
+SKIP_SOURCE_FIRST_LINE = "X-Skip-Source-First-Line"
SKIP_STRING_NORMALIZATION_HEADER = "X-Skip-String-Normalization"
+SKIP_MAGIC_TRAILING_COMMA = "X-Skip-Magic-Trailing-Comma"
+PREVIEW = "X-Preview"
FAST_OR_SAFE_HEADER = "X-Fast-Or-Safe"
DIFF_HEADER = "X-Diff"
PROTOCOL_VERSION_HEADER,
LINE_LENGTH_HEADER,
PYTHON_VARIANT_HEADER,
+ SKIP_SOURCE_FIRST_LINE,
SKIP_STRING_NORMALIZATION_HEADER,
+ SKIP_MAGIC_TRAILING_COMMA,
+ PREVIEW,
FAST_OR_SAFE_HEADER,
DIFF_HEADER,
]
@click.command(context_settings={"help_option_names": ["-h", "--help"]})
@click.option(
- "--bind-host", type=str, help="Address to bind the server to.", default="localhost"
+ "--bind-host",
+ type=str,
+ help="Address to bind the server to.",
+ default="localhost",
+ show_default=True,
+)
+@click.option(
+ "--bind-port", type=int, help="Port to listen on", default=45484, show_default=True
)
-@click.option("--bind-port", type=int, help="Port to listen on", default=45484)
@click.version_option(version=black.__version__)
def main(bind_host: str, bind_port: int) -> None:
logging.basicConfig(level=logging.INFO)
def make_app() -> web.Application:
- app = web.Application()
- executor = ProcessPoolExecutor()
-
- cors = aiohttp_cors.setup(app)
- resource = cors.add(app.router.add_resource("/"))
- cors.add(
- resource.add_route("POST", partial(handle, executor=executor)),
- {
- "*": aiohttp_cors.ResourceOptions(
- allow_headers=(*BLACK_HEADERS, "Content-Type"), expose_headers="*"
- )
- },
+ app = web.Application(
+ middlewares=[cors(allow_headers=(*BLACK_HEADERS, "Content-Type"))]
)
-
+ executor = ProcessPoolExecutor()
+ app.add_routes([web.post("/", partial(handle, executor=executor))])
return app
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)
+ )
+ skip_source_first_line = bool(
+ request.headers.get(SKIP_SOURCE_FIRST_LINE, False)
+ )
+ preview = bool(request.headers.get(PREVIEW, False))
fast = False
if request.headers.get(FAST_OR_SAFE_HEADER, "safe") == "fast":
fast = True
target_versions=versions,
is_pyi=pyi,
line_length=line_length,
+ skip_source_first_line=skip_source_first_line,
string_normalization=not skip_string_normalization,
+ magic_trailing_comma=not skip_magic_trailing_comma,
+ preview=preview,
)
req_bytes = await request.content.read()
charset = request.charset if request.charset is not None else "utf8"
req_str = req_bytes.decode(charset)
- then = datetime.utcnow()
+ then = datetime.now(timezone.utc)
+
+ header = ""
+ if skip_source_first_line:
+ first_newline_position: int = req_str.find("\n") + 1
+ header = req_str[:first_newline_position]
+ req_str = req_str[first_newline_position:]
loop = asyncio.get_event_loop()
formatted_str = await loop.run_in_executor(
executor, partial(black.format_file_contents, req_str, fast=fast, mode=mode)
)
+ # Preserve CRLF line endings
+ nl = req_str.find("\n")
+ if nl > 0 and req_str[nl - 1] == "\r":
+ formatted_str = formatted_str.replace("\n", "\r\n")
+ # If, after swapping line endings, nothing changed, then say so
+ if formatted_str == req_str:
+ raise black.NothingChanged
+
+ # Put the source first line back
+ req_str = header + req_str
+ formatted_str = header + formatted_str
+
# Only output the diff in the HTTP response
only_diff = bool(request.headers.get(DIFF_HEADER, False))
if only_diff:
- now = datetime.utcnow()
- src_name = f"In\t{then} +0000"
- dst_name = f"Out\t{now} +0000"
+ now = datetime.now(timezone.utc)
+ src_name = f"In\t{then}"
+ dst_name = f"Out\t{now}"
loop = asyncio.get_event_loop()
formatted_str = await loop.run_in_executor(
executor,
raise InvalidVariantHeader("major version must be 2 or 3")
if len(rest) > 0:
minor = int(rest[0])
- if major == 2 and minor != 7:
- raise InvalidVariantHeader(
- "minor version must be 7 for Python 2"
- )
+ if major == 2:
+ raise InvalidVariantHeader("Python 2 is not supported")
else:
# Default to lowest supported minor version.
minor = 7 if major == 2 else 3
raise InvalidVariantHeader(f"3.{minor} is not supported")
versions.add(black.TargetVersion[version_str])
except (KeyError, ValueError):
- raise InvalidVariantHeader("expected e.g. '3.7', 'py3.5'")
+ raise InvalidVariantHeader("expected e.g. '3.7', 'py3.5'") from None
return False, versions
def patched_main() -> None:
+ maybe_install_uvloop()
freeze_support()
- black.patch_click()
main()
projects / etc / vim.git / blobdiff