Function build_spdx_license_expression

src/licensedcode/cache.py:507–524

Return an SPDX license expression from a ScanCode ``license_expression`` string. For example:: >>> exp = "mit OR gpl-2.0 with generic-exception" >>> spdx = "MIT OR GPL-2.0-only WITH LicenseRef-scancode-generic-exception" >>> assert build_spdx_license_expression(exp) == spdx

(license_expression, licensing=None)

def build_spdx_license_expression(license_expression, licensing=None):
    """
    Return an SPDX license expression from a ScanCode ``license_expression``
    string.

    For example::
    >>> exp = "mit OR gpl-2.0 with generic-exception"
    >>> spdx = "MIT OR GPL-2.0-only WITH LicenseRef-scancode-generic-exception"
    >>> assert build_spdx_license_expression(exp) == spdx
    """
    if not license_expression:
        return

    if not licensing:
        licensing = get_licensing()
    validate_spdx_license_keys(license_expression=license_expression, licensing=licensing)
    parsed = licensing.parse(license_expression)
    return parsed.render(template='{symbol.wrapped.spdx_license_key}')


def validate_spdx_license_keys(license_expression, licensing):