X-Git-Url: https://git.madduck.net/etc/vim.git/blobdiff_plain/edf1c9dc0f20239b9d5351d8b0607c9e936dd43f..d34eb7fea38384cd1cd029179298116fabdbccd4:/src/black/__init__.py diff --git a/src/black/__init__.py b/src/black/__init__.py index 7a7456a..c7c5d72 100644 --- a/src/black/__init__.py +++ b/src/black/__init__.py @@ -68,6 +68,7 @@ DEFAULT_LINE_LENGTH = 88 DEFAULT_EXCLUDES = r"/(\.direnv|\.eggs|\.git|\.hg|\.mypy_cache|\.nox|\.tox|\.venv|\.svn|_build|buck-out|build|dist)/" # noqa: B950 DEFAULT_INCLUDES = r"\.pyi?$" CACHE_DIR = Path(user_cache_dir("black", version=__version__)) +STDIN_PLACEHOLDER = "__BLACK_STDIN_FILENAME__" STRING_PREFIX_CHARS: Final = "furbFURB" # All possible string prefix characters. @@ -457,6 +458,15 @@ def target_version_option_callback( "excluded even when they are passed explicitly as arguments." ), ) +@click.option( + "--stdin-filename", + type=str, + help=( + "The name of the file when passing it through stdin. Useful to make " + "sure Black will respect --force-exclude option on some " + "editors that rely on using stdin." + ), +) @click.option( "-q", "--quiet", @@ -516,6 +526,7 @@ def main( include: str, exclude: str, force_exclude: Optional[str], + stdin_filename: Optional[str], src: Tuple[str, ...], config: Optional[str], ) -> None: @@ -548,6 +559,7 @@ def main( exclude=exclude, force_exclude=force_exclude, report=report, + stdin_filename=stdin_filename, ) path_empty( @@ -587,6 +599,7 @@ def get_sources( exclude: str, force_exclude: Optional[str], report: "Report", + stdin_filename: Optional[str], ) -> Set[Path]: """Compute the set of files to be formatted.""" try: @@ -613,22 +626,14 @@ def get_sources( gitignore = get_gitignore(root) for s in src: - p = Path(s) - if p.is_dir(): - sources.update( - gen_python_files( - p.iterdir(), - root, - include_regex, - exclude_regex, - force_exclude_regex, - report, - gitignore, - ) - ) - elif s == "-": - sources.add(p) - elif p.is_file(): + if s == "-" and stdin_filename: + p = Path(stdin_filename) + is_stdin = True + else: + p = Path(s) + is_stdin = False + + if is_stdin or p.is_file(): normalized_path = normalize_path_maybe_ignore(p, root, report) if normalized_path is None: continue @@ -643,6 +648,23 @@ def get_sources( report.path_ignored(p, "matches the --force-exclude regular expression") continue + if is_stdin: + p = Path(f"{STDIN_PLACEHOLDER}{str(p)}") + + sources.add(p) + elif p.is_dir(): + sources.update( + gen_python_files( + p.iterdir(), + root, + include_regex, + exclude_regex, + force_exclude_regex, + report, + gitignore, + ) + ) + elif s == "-": sources.add(p) else: err(f"invalid path: {s}") @@ -670,7 +692,18 @@ def reformat_one( """ try: changed = Changed.NO - if not src.is_file() and str(src) == "-": + + if str(src) == "-": + is_stdin = True + elif str(src).startswith(STDIN_PLACEHOLDER): + is_stdin = True + # Use the original name again in case we want to print something + # to the user + src = Path(str(src)[len(STDIN_PLACEHOLDER) :]) + else: + is_stdin = False + + if is_stdin: if format_stdin_to_stdout(fast=fast, write_back=write_back, mode=mode): changed = Changed.YES else: @@ -953,7 +986,7 @@ def format_str(src_contents: str, *, mode: Mode) -> FileContent: allowed. Example: >>> import black - >>> print(black.format_str("def f(arg:str='')->None:...", mode=Mode())) + >>> print(black.format_str("def f(arg:str='')->None:...", mode=black.Mode())) def f(arg: str = "") -> None: ... @@ -3238,7 +3271,8 @@ class StringParenStripper(StringTransformer): Requirements: The line contains a string which is surrounded by parentheses and: - - The target string is NOT the only argument to a function call). + - The target string is NOT the only argument to a function call. + - The target string is NOT a "pointless" string. - If the target string contains a PERCENT, the brackets are not preceeded or followed by an operator with higher precedence than PERCENT. @@ -3262,6 +3296,14 @@ class StringParenStripper(StringTransformer): if leaf.type != token.STRING: continue + # If this is a "pointless" string... + if ( + leaf.parent + and leaf.parent.parent + and leaf.parent.parent.type == syms.simple_stmt + ): + continue + # Should be preceded by a non-empty LPAR... if ( not is_valid_index(idx - 1) @@ -5192,31 +5234,52 @@ def normalize_numeric_literal(leaf: Leaf) -> None: # Leave octal and binary literals alone. pass elif text.startswith("0x"): - # Change hex literals to upper case. - before, after = text[:2], text[2:] - text = f"{before}{after.upper()}" + text = format_hex(text) elif "e" in text: - before, after = text.split("e") - sign = "" - if after.startswith("-"): - after = after[1:] - sign = "-" - elif after.startswith("+"): - after = after[1:] - before = format_float_or_int_string(before) - text = f"{before}e{sign}{after}" + text = format_scientific_notation(text) elif text.endswith(("j", "l")): - number = text[:-1] - suffix = text[-1] - # Capitalize in "2L" because "l" looks too similar to "1". - if suffix == "l": - suffix = "L" - text = f"{format_float_or_int_string(number)}{suffix}" + text = format_long_or_complex_number(text) else: text = format_float_or_int_string(text) leaf.value = text +def format_hex(text: str) -> str: + """ + Formats a hexadecimal string like "0x12b3" + + Uses lowercase because of similarity between "B" and "8", which + can cause security issues. + see: https://github.com/psf/black/issues/1692 + """ + + before, after = text[:2], text[2:] + return f"{before}{after.lower()}" + + +def format_scientific_notation(text: str) -> str: + """Formats a numeric string utilizing scentific notation""" + before, after = text.split("e") + sign = "" + if after.startswith("-"): + after = after[1:] + sign = "-" + elif after.startswith("+"): + after = after[1:] + before = format_float_or_int_string(before) + return f"{before}e{sign}{after}" + + +def format_long_or_complex_number(text: str) -> str: + """Formats a long or complex string like `10L` or `10j`""" + number = text[:-1] + suffix = text[-1] + # Capitalize in "2L" because "l" looks too similar to "1". + if suffix == "l": + suffix = "L" + return f"{format_float_or_int_string(number)}{suffix}" + + def format_float_or_int_string(text: str) -> str: """Formats a float string like "1.0".""" if "." not in text: @@ -6744,13 +6807,33 @@ def is_docstring(leaf: Leaf) -> bool: return False +def lines_with_leading_tabs_expanded(s: str) -> List[str]: + """ + Splits string into lines and expands only leading tabs (following the normal + Python rules) + """ + lines = [] + for line in s.splitlines(): + # Find the index of the first non-whitespace character after a string of + # whitespace that includes at least one tab + match = re.match(r"\s*\t+\s*(\S)", line) + if match: + first_non_whitespace_idx = match.start(1) + + lines.append( + line[:first_non_whitespace_idx].expandtabs() + + line[first_non_whitespace_idx:] + ) + else: + lines.append(line) + return lines + + def fix_docstring(docstring: str, prefix: str) -> str: # https://www.python.org/dev/peps/pep-0257/#handling-docstring-indentation if not docstring: return "" - # Convert tabs to spaces (following the normal Python rules) - # and split into a list of lines: - lines = docstring.expandtabs().splitlines() + lines = lines_with_leading_tabs_expanded(docstring) # Determine minimum indentation (first line doesn't count): indent = sys.maxsize for line in lines[1:]: