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Line length

line_length

Resolution of the project's configured ruff line-length.

Thin services/ module in the shape of :mod:axm_edit.services.lint: it reads the project's configuration and answers a single question — how wide a line the project actually allows. Strictly read-only.

parse_line_length(pyproject_text)

Extract [tool.ruff] line-length from an in-memory TOML text.

Parameters:

Name Type Description Default
pyproject_text str

Full pyproject.toml content, already read.

 required

Returns:

Type Description
int | None

The declared integer, or None when the key is absent (or the
int | None

text is not valid TOML).
Source code in packages/axm-edit/src/axm_edit/services/line_length.py
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def parse_line_length(pyproject_text: str) -> int | None:
    """Extract ``[tool.ruff] line-length`` from an in-memory TOML text.

    Args:
        pyproject_text: Full ``pyproject.toml`` content, already read.

    Returns:
        The declared integer, or ``None`` when the key is absent (or the
        text is not valid TOML).
    """
    try:
        data = tomllib.loads(pyproject_text)
    except tomllib.TOMLDecodeError:
        return None

    ruff = data.get("tool", {}).get("ruff", {})
    if not isinstance(ruff, dict):
        return None

    value = ruff.get("line-length")
    return value if isinstance(value, int) and not isinstance(value, bool) else None

resolve_line_length(root)

Return the line-length configured under root.

Parameters:

Name Type Description Default
root Path

Project root the batch is applied to.

 required

Returns:

Type Description
int

The value declared in root/pyproject.toml, or
int

data:DEFAULT_LINE_LENGTH when no readable declaration is found.
Source code in packages/axm-edit/src/axm_edit/services/line_length.py
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def resolve_line_length(root: Path) -> int:
    """Return the ``line-length`` configured under *root*.

    Args:
        root: Project root the batch is applied to.

    Returns:
        The value declared in ``root/pyproject.toml``, or
        :data:`DEFAULT_LINE_LENGTH` when no readable declaration is found.
    """
    pyproject = resolve_safe(root, _PYPROJECT)
    if pyproject is None or not pyproject.is_file():
        return DEFAULT_LINE_LENGTH

    try:
        text = pyproject.read_text(encoding="utf-8")
    except (OSError, UnicodeDecodeError):
        return DEFAULT_LINE_LENGTH

    parsed = parse_line_length(text)
    return DEFAULT_LINE_LENGTH if parsed is None else parsed