`python_version` => `language_version` (#296)

[etc/vim.git] / black.py

diff --git a/black.py b/black.py
index 488f5811f04230f682638e32f3483ab030a81c23..da00525ca945e6443aa61ffe82a1f93ad0061e71 100644 (file)
--- a/black.py
+++ b/black.py
@@ -46,6 +46,10 @@ from blib2to3.pgen2.parse import ParseError
 
 __version__ = "18.5b1"
 DEFAULT_LINE_LENGTH = 88
 
 __version__ = "18.5b1"
 DEFAULT_LINE_LENGTH = 88

+DEFAULT_EXCLUDES = (
+    r"/(\.git|\.hg|\.mypy_cache|\.tox|\.venv|_build|buck-out|build|dist)/"
+)
+DEFAULT_INCLUDES = r"\.pyi?$"

 CACHE_DIR = Path(user_cache_dir("black", version=__version__))
 
 
 CACHE_DIR = Path(user_cache_dir("black", version=__version__))
 
 


@@ -126,6 +130,7 @@ class FileMode(Flag):
     AUTO_DETECT = 0
     PYTHON36 = 1
     PYI = 2
     AUTO_DETECT = 0
     PYTHON36 = 1
     PYI = 2

+    NO_STRING_NORMALIZATION = 4

 
 
 @click.command()
 
 
 @click.command()


@@ -137,6 +142,29 @@ class FileMode(Flag):
     help="How many character per line to allow.",
     show_default=True,
 )
     help="How many character per line to allow.",
     show_default=True,
 )

+@click.option(
+    "--py36",
+    is_flag=True,
+    help=(
+        "Allow using Python 3.6-only syntax on all input files.  This will put "
+        "trailing commas in function signatures and calls also after *args and "
+        "**kwargs.  [default: per-file auto-detection]"
+    ),
+)
+@click.option(
+    "--pyi",
+    is_flag=True,
+    help=(
+        "Format all input files like typing stubs regardless of file extension "
+        "(useful when piping source on standard input)."
+    ),
+)
+@click.option(
+    "-S",
+    "--skip-string-normalization",
+    is_flag=True,
+    help="Don't normalize string quotes or prefixes.",
+)

 @click.option(
     "--check",
     is_flag=True,
 @click.option(
     "--check",
     is_flag=True,


@@ -157,29 +185,37 @@ class FileMode(Flag):
     help="If --fast given, skip temporary sanity checks. [default: --safe]",
 )
 @click.option(
     help="If --fast given, skip temporary sanity checks. [default: --safe]",
 )
 @click.option(

-    "-q",
-    "--quiet",
-    is_flag=True,
+    "--include",
+    type=str,
+    default=DEFAULT_INCLUDES,

     help=(
     help=(

-        "Don't emit non-error messages to stderr. Errors are still emitted, "
-        "silence those with 2>/dev/null."
+        "A regular expression that matches files and directories that should be "
+        "included on recursive searches.  An empty value means all files are "
+        "included regardless of the name.  Use forward slashes for directories on "
+        "all platforms (Windows, too).  Exclusions are calculated first, inclusions "
+        "later."

     ),
     ),

+    show_default=True,

 )
 @click.option(
 )
 @click.option(

-    "--pyi",
-    is_flag=True,
+    "--exclude",
+    type=str,
+    default=DEFAULT_EXCLUDES,

     help=(
     help=(

-        "Consider all input files typing stubs regardless of file extension "
-        "(useful when piping source on standard input)."
+        "A regular expression that matches files and directories that should be "
+        "excluded on recursive searches.  An empty value means no paths are excluded. "
+        "Use forward slashes for directories on all platforms (Windows, too).  "
+        "Exclusions are calculated first, inclusions later."

     ),
     ),

+    show_default=True,

 )
 @click.option(
 )
 @click.option(

-    "--py36",
+    "-q",
+    "--quiet",

     is_flag=True,
     help=(
     is_flag=True,
     help=(

-        "Allow using Python 3.6-only syntax on all input files.  This will put "
-        "trailing commas in function signatures and calls also after *args and "
-        "**kwargs.  [default: per-file auto-detection]"
+        "Don't emit non-error messages to stderr. Errors are still emitted, "
+        "silence those with 2>/dev/null."

     ),
 )
 @click.version_option(version=__version__)
     ),
 )
 @click.version_option(version=__version__)


@@ -199,15 +235,28 @@ def main(
     fast: bool,
     pyi: bool,
     py36: bool,
     fast: bool,
     pyi: bool,
     py36: bool,

+    skip_string_normalization: bool,

     quiet: bool,
     quiet: bool,

+    include: str,
+    exclude: str,

     src: List[str],
 ) -> None:
     """The uncompromising code formatter."""
     sources: List[Path] = []
     src: List[str],
 ) -> None:
     """The uncompromising code formatter."""
     sources: List[Path] = []

+    try:
+        include_regex = re.compile(include)
+    except re.error:
+        err(f"Invalid regular expression for include given: {include!r}")
+        ctx.exit(2)
+    try:
+        exclude_regex = re.compile(exclude)
+    except re.error:
+        err(f"Invalid regular expression for exclude given: {exclude!r}")
+        ctx.exit(2)

     for s in src:
         p = Path(s)
         if p.is_dir():
     for s in src:
         p = Path(s)
         if p.is_dir():

-            sources.extend(gen_python_files_in_dir(p))
+            sources.extend(gen_python_files_in_dir(p, include_regex, exclude_regex))

         elif p.is_file():
             # if a file was explicitly given, we don't care about its extension
             sources.append(p)
         elif p.is_file():
             # if a file was explicitly given, we don't care about its extension
             sources.append(p)


@@ -227,6 +276,8 @@ def main(
         mode |= FileMode.PYTHON36
     if pyi:
         mode |= FileMode.PYI
         mode |= FileMode.PYTHON36
     if pyi:
         mode |= FileMode.PYI

+    if skip_string_normalization:
+        mode |= FileMode.NO_STRING_NORMALIZATION

     report = Report(check=check, quiet=quiet)
     if len(sources) == 0:
         out("No paths given. Nothing to do 😴")
     report = Report(check=check, quiet=quiet)
     if len(sources) == 0:
         out("No paths given. Nothing to do 😴")


@@ -291,8 +342,8 @@ def reformat_one(
             cache: Cache = {}
             if write_back != WriteBack.DIFF:
                 cache = read_cache(line_length, mode)
             cache: Cache = {}
             if write_back != WriteBack.DIFF:
                 cache = read_cache(line_length, mode)

-                src = src.resolve()
-                if src in cache and cache[src] == get_cache_info(src):
+                res_src = src.resolve()
+                if res_src in cache and cache[res_src] == get_cache_info(res_src):

                     changed = Changed.CACHED
             if changed is not Changed.CACHED and format_file_in_place(
                 src,
                     changed = Changed.CACHED
             if changed is not Changed.CACHED and format_file_in_place(
                 src,


@@ -487,8 +538,11 @@ def format_str(
     future_imports = get_future_imports(src_node)
     is_pyi = bool(mode & FileMode.PYI)
     py36 = bool(mode & FileMode.PYTHON36) or is_python36(src_node)
     future_imports = get_future_imports(src_node)
     is_pyi = bool(mode & FileMode.PYI)
     py36 = bool(mode & FileMode.PYTHON36) or is_python36(src_node)

+    normalize_strings = not bool(mode & FileMode.NO_STRING_NORMALIZATION)

     lines = LineGenerator(
     lines = LineGenerator(

-        remove_u_prefix=py36 or "unicode_literals" in future_imports, is_pyi=is_pyi
+        remove_u_prefix=py36 or "unicode_literals" in future_imports,
+        is_pyi=is_pyi,
+        normalize_strings=normalize_strings,

     )
     elt = EmptyLineTracker(is_pyi=is_pyi)
     empty_line = Line()
     )
     elt = EmptyLineTracker(is_pyi=is_pyi)
     empty_line = Line()


@@ -1286,6 +1340,7 @@ class LineGenerator(Visitor[Line]):
     """
 
     is_pyi: bool = False
     """
 
     is_pyi: bool = False

+    normalize_strings: bool = True

     current_line: Line = Factory(Line)
     remove_u_prefix: bool = False
 
     current_line: Line = Factory(Line)
     remove_u_prefix: bool = False
 


@@ -1354,7 +1409,7 @@ class LineGenerator(Visitor[Line]):
 
             else:
                 normalize_prefix(node, inside_brackets=any_open_brackets)
 
             else:
                 normalize_prefix(node, inside_brackets=any_open_brackets)

-                if node.type == token.STRING:
+                if self.normalize_strings and node.type == token.STRING:

                     normalize_string_prefix(node, remove_u_prefix=self.remove_u_prefix)
                     normalize_string_quotes(node)
                 if node.type not in WHITESPACE:
                     normalize_string_prefix(node, remove_u_prefix=self.remove_u_prefix)
                     normalize_string_quotes(node)
                 if node.type not in WHITESPACE:


@@ -2736,33 +2791,27 @@ def get_future_imports(node: Node) -> Set[str]:
     return imports
 
 
     return imports
 
 

-PYTHON_EXTENSIONS = {".py", ".pyi"}
-BLACKLISTED_DIRECTORIES = {
-    "build",
-    "buck-out",
-    "dist",
-    "_build",
-    ".git",
-    ".hg",
-    ".mypy_cache",
-    ".tox",
-    ".venv",
-}
-
-
-def gen_python_files_in_dir(path: Path) -> Iterator[Path]:
-    """Generate all files under `path` which aren't under BLACKLISTED_DIRECTORIES
-    and have one of the PYTHON_EXTENSIONS.
+def gen_python_files_in_dir(
+    path: Path, include: Pattern[str], exclude: Pattern[str]
+) -> Iterator[Path]:
+    """Generate all files under `path` whose paths are not excluded by the
+    `exclude` regex, but are included by the `include` regex.

     """
     for child in path.iterdir():
     """
     for child in path.iterdir():

+        normalized_path = child.resolve().as_posix()

         if child.is_dir():
         if child.is_dir():

-            if child.name in BLACKLISTED_DIRECTORIES:
-                continue
+            normalized_path += "/"
+        exclude_match = exclude.search(normalized_path)
+        if exclude_match and exclude_match.group(0):
+            continue

 
 

-            yield from gen_python_files_in_dir(child)
+        if child.is_dir():
+            yield from gen_python_files_in_dir(child, include, exclude)

 
 

-        elif child.is_file() and child.suffix in PYTHON_EXTENSIONS:
-            yield child
+        elif child.is_file():
+            include_match = include.search(normalized_path)
+            if include_match:
+                yield child

 
 
 @dataclass
 
 
 @dataclass