Extract common parts with Graylint into Darkgraylib

.github/workflows/isort.yml

@@ -11,7 +11,7 @@ jobs:
       - uses: actions/checkout@v4
       - uses: actions/setup-python@v5
       - run: pip install 'isort>=5.0.1'
-      - uses: wearerequired/lint-action@v2.1.0
+      - uses: wearerequired/lint-action@v2.3.0
         with:
           github_token: ${{ secrets.GITHUB_TOKEN }}
           isort: true

.github/workflows/mypy.yml

@@ -13,13 +13,15 @@ jobs:
       - run: |
           pip install -U \
             black \
+            git+https://github.com/akaihola/darkgraylib.git@main \
             flynt \
+            git+https://github.com/akaihola/graylint.git@main \
             isort \
             mypy>=0.990 \
             pytest \
             types-requests \
             types-toml
-      - uses: wearerequired/lint-action@v2.1.0
+      - uses: wearerequired/lint-action@v2.3.0
         with:
           github_token: ${{ secrets.GITHUB_TOKEN }}
           mypy: true

.github/workflows/pylint.yml

@@ -15,7 +15,9 @@ jobs:
           pip install -U \
             airium \
             black \
+            git+https://github.com/akaihola/darkgraylib.git@main \
             defusedxml \
+            git+https://github.com/akaihola/graylint.git@main \
             pip-requirements-parser \
             pygments \
             pylint \
@@ -26,7 +28,7 @@ jobs:
             ruamel.yaml \
             toml
           pip list
-      - uses: wearerequired/lint-action@v2.1.0
+      - uses: wearerequired/lint-action@v2.3.0
         with:
           github_token: ${{ secrets.GITHUB_TOKEN }}
           pylint: true

CHANGES.rst

@@ -37,6 +37,7 @@ Added
 - Allow ``-`` as the single source filename when using the ``--stdin-filename`` option.
   This makes the option compatible with Black.
 - Upgrade NixOS tests to use Python 3.11 on both Linux and macOS.
+- Move ``git_repo`` fixture to ``darkgraylib``.
 
 Fixed
 -----

README.rst

@@ -323,6 +323,26 @@ The following `command line arguments`_ can also be used to modify the defaults:
        revision range from the ``PRE_COMMIT_FROM_REF`` and ``PRE_COMMIT_TO_REF``
        environment variables. If those are not found, Darker works against ``HEAD``.
        Also see ``--stdin-filename=`` for the ``:STDIN:`` special value.
+--stdin-filename PATH
+       The path to the file when passing it through stdin. Useful so Darker can find the
+       previous version from Git. Only valid with ``--revision=<rev1>..:STDIN:``
+       (``HEAD..:STDIN:`` being the default if ``--stdin-filename`` is enabled).
+-c PATH, --config PATH
+       Make ``darker``, ``black`` and ``isort`` read configuration from ``PATH``. Note
+       that other tools like ``flynt``, ``mypy``, ``pylint`` or ``flake8`` won't use
+       this configuration file.
+-v, --verbose
+       Show steps taken and summarize modifications
+-q, --quiet
+       Reduce amount of output
+--color
+       Enable syntax highlighting even for non-terminal output. Overrides the
+       environment variable PY_COLORS=0
+--no-color
+       Disable syntax highlighting even for terminal output. Overrides the environment
+       variable PY_COLORS=1
+-W WORKERS, --workers WORKERS
+       How many parallel workers to allow, or ``0`` for one per core [default: 1]
 --diff
        Don't write the files back, just output a diff for each file on stdout. Highlight
        syntax if on a terminal and the ``pygments`` package is available, or if enabled
@@ -331,10 +351,6 @@ The following `command line arguments`_ can also be used to modify the defaults:
        Force complete reformatted output to stdout, instead of in-place. Only valid if
        there's just one file to reformat. Highlight syntax if on a terminal and the
        ``pygments`` package is available, or if enabled by configuration.
---stdin-filename PATH
-       The path to the file when passing it through stdin. Useful so Darker can find the
-       previous version from Git. Only valid with ``--revision=<rev1>..:STDIN:``
-       (``HEAD..:STDIN:`` being the default if ``--stdin-filename`` is enabled).
 --check
        Don't write the files back, just return the status. Return code 0 means nothing
        would change. Return code 1 means some files would be reformatted.
@@ -343,24 +359,11 @@ The following `command line arguments`_ can also be used to modify the defaults:
 -i, --isort
        Also sort imports using the ``isort`` package
 -L CMD, --lint CMD
-       Also run a linter on changed files. ``CMD`` can be a name or path of the linter
+       Run a linter on changed files. ``CMD`` can be a name or path of the linter
        binary, or a full quoted command line with the command and options. Linters read
        their configuration as normally, and aren't affected by ``-c`` / ``--config``.
        Linter output is syntax highlighted when the ``pygments`` package is available if
        run on a terminal and or enabled by explicitly (see ``--color``).
--c PATH, --config PATH
-       Ask ``black`` and ``isort`` to read configuration from ``PATH``. Note that other
-       tools like flynt, Mypy, Pylint and Flake8 won't use this configuration file.
--v, --verbose
-       Show steps taken and summarize modifications
--q, --quiet
-       Reduce amount of output
---color
-       Enable syntax highlighting even for non-terminal output. Overrides the
-       environment variable PY_COLORS=0
---no-color
-       Disable syntax highlighting even for terminal output. Overrides the environment
-       variable PY_COLORS=1
 -S, --skip-string-normalization
        Don't normalize string quotes or prefixes
 --no-skip-string-normalization
@@ -375,8 +378,6 @@ The following `command line arguments`_ can also be used to modify the defaults:
 -t VERSION, --target-version VERSION
        [py33|py34|py35|py36|py37|py38|py39|py310|py311|py312] Python versions that
        should be supported by Black's output. [default: per-file auto-detection]
--W WORKERS, --workers WORKERS
-       How many parallel workers to allow, or ``0`` for one per core [default: 1]
 
 To change default values for these options for a given project,
 add a ``[tool.darker]`` or ``[tool.black]`` section to ``pyproject.toml`` in the

mypy.ini

@@ -57,10 +57,6 @@ disallow_any_explicit = False
 [mypy-darker.config]
 disallow_subclassing_any = False
 
-[mypy-darker.highlighting.lexers]
-disallow_any_unimported = False
-disallow_subclassing_any = False
-
 [mypy-darker.tests.conftest]
 disallow_any_unimported = False
 

pyproject.toml

@@ -8,6 +8,7 @@ target-version = ["py311"]
 
 [tool.isort]
 profile = "black"
+known_first_party = ["darkgraylib", "graylint"]
 known_third_party = ["pytest"]
 
 [tool.darker]
@@ -16,3 +17,8 @@ src = [
     "src",
 ]
 revision = "origin/master..."
+
+[tool.pylint."messages control"]
+# Check import order only with isort. Pylint doesn't support a custom list of first
+# party packages. We want to consider "darkgraylib" and "graylint" as first party.
+disable = ["wrong-import-order"]

setup.cfg

@@ -28,6 +28,8 @@ packages = find:
 install_requires =
     # NOTE: remember to keep `constraints-oldest.txt` in sync with these
     black>=21.5b1,<24.2  # upper limit until incompatibility fixed
+    darkgraylib @ git+https://github.com/akaihola/darkgraylib.git@main
+    graylint @ git+https://github.com/akaihola/graylint.git@main
     toml>=0.10.0
 # NOTE: remember to keep `.github/workflows/python-package.yml` in sync
 #       with the minimum required Python version
@@ -39,9 +41,6 @@ where = src
 [options.entry_points]
 console_scripts =
     darker = darker.__main__:main_with_error_handling
-pygments.lexers =
-    lint_location = darker.highlighting.lexers:LocationLexer
-    lint_description = darker.highlighting.lexers:DescriptionLexer
 
 [options.extras_require]
 flynt =

src/darker/__main__.py

@@ -10,7 +10,6 @@
 from pathlib import Path
 from typing import Collection, Generator, List, Optional, Tuple
 
-import darker.black_compat
 from darker.black_diff import (
     BlackConfig,
     filter_python_files,
@@ -20,35 +19,35 @@
 from darker.chooser import choose_lines
 from darker.command_line import parse_command_line
 from darker.concurrency import get_executor
-from darker.config import Exclusions, OutputMode, dump_config
+from darker.config import Exclusions, OutputMode, validate_config_output_mode
 from darker.diff import diff_chunks
 from darker.exceptions import DependencyError, MissingPackageError
 from darker.fstring import apply_flynt, flynt
 from darker.git import (
-    PRE_COMMIT_FROM_TO_REFS,
-    STDIN,
-    WORKTREE,
     EditedLinenumsDiffer,
-    RevisionRange,
     get_missing_at_revision,
     get_path_in_repo,
-    git_get_content_at_revision,
     git_get_modified_python_files,
     git_is_repository,
 )
 from darker.help import get_extra_instruction
-from darker.highlighting import colorize, should_use_color
 from darker.import_sorting import apply_isort, isort
-from darker.linting import run_linters
-from darker.utils import (
-    GIT_DATEFORMAT,
-    DiffChunk,
-    TextDocument,
-    debug_dump,
-    get_common_root,
-    glob_any,
-)
+from darker.utils import debug_dump, glob_any
 from darker.verification import ASTVerifier, BinarySearch, NotEquivalentError
+from darkgraylib.black_compat import find_project_root
+from darkgraylib.config import show_config_if_debug
+from darkgraylib.git import (
+    PRE_COMMIT_FROM_TO_REFS,
+    STDIN,
+    WORKTREE,
+    RevisionRange,
+    git_get_content_at_revision,
+)
+from darkgraylib.highlighting import colorize, should_use_color
+from darkgraylib.log import setup_logging
+from darkgraylib.main import resolve_paths
+from darkgraylib.utils import GIT_DATEFORMAT, DiffChunk, TextDocument
+from graylint.linting import run_linters
 
 logger = logging.getLogger(__name__)
 
@@ -480,23 +479,19 @@ def main(  # pylint: disable=too-many-locals,too-many-branches,too-many-statemen
              should be) reformatted; 0 otherwise.
 
     """
-    if argv is None:
-        argv = sys.argv[1:]
     args, config, config_nondefault = parse_command_line(argv)
-    logging.basicConfig(level=args.log_level)
-    if args.log_level == logging.INFO:
-        formatter = logging.Formatter("%(levelname)s: %(message)s")
-        logging.getLogger().handlers[0].setFormatter(formatter)
 
+    # Make sure there aren't invalid option combinations after merging configuration and
+    # command line options.
+    OutputMode.validate_diff_stdout(args.diff, args.stdout)
+    OutputMode.validate_stdout_src(args.stdout, args.src, args.stdin_filename)
+    validate_config_output_mode(config)
+
+    setup_logging(args.log_level)
     # Make sure we don't get excessive debug log output from Black
     logging.getLogger("blib2to3.pgen2.driver").setLevel(logging.WARNING)
 
-    if args.log_level <= logging.DEBUG:
-        print("\n# Effective configuration:\n")
-        print(dump_config(config))
-        print("\n# Configuration options which differ from defaults:\n")
-        print(dump_config(config_nondefault))
-        print("\n")
+    show_config_if_debug(config, config_nondefault, args.log_level)
 
     if args.isort and not isort:
         raise MissingPackageError(
@@ -520,16 +515,11 @@ def main(  # pylint: disable=too-many-locals,too-many-branches,too-many-statemen
     if args.skip_magic_trailing_comma is not None:
         black_config["skip_magic_trailing_comma"] = args.skip_magic_trailing_comma
 
-    stdin_mode = args.stdin_filename is not None
-    if stdin_mode:
-        paths = {Path(args.stdin_filename)}
-        # `parse_command_line` guarantees that `args.src` is empty
-    else:
-        paths = {Path(p) for p in args.src}
-        # `parse_command_line` guarantees that `args.stdin_filename` is `None`
-    root = get_common_root(paths)
+    paths, root = resolve_paths(args.stdin_filename, args.src)
 
-    revrange = RevisionRange.parse_with_common_ancestor(args.revision, root, stdin_mode)
+    revrange = RevisionRange.parse_with_common_ancestor(
+        args.revision, root, args.stdin_filename is not None
+    )
     output_mode = OutputMode.from_args(args)
     write_modified_files = not args.check and output_mode == OutputMode.NOTHING
     if write_modified_files:
@@ -574,7 +564,7 @@ def main(  # pylint: disable=too-many-locals,too-many-branches,too-many-statemen
         # In other modes, only reformat files which have been modified.
         if git_is_repository(root):
             # Get the modified files only.
-            repo_root = darker.black_compat.find_project_root([str(root)])
+            repo_root = find_project_root([str(root)])
             changed_files = {
                 (repo_root / file).relative_to(root)
                 for file in git_get_modified_python_files(paths, revrange, repo_root)