Function _as_fz_document

src/__init__.py:486–502

Returns document as a mupdf.FzDocument, upcasting as required. Raises 'document closed' exception if closed.

(document)

def _as_fz_document(document):
    '''
    Returns document as a mupdf.FzDocument, upcasting as required. Raises
    'document closed' exception if closed.
    '''
    if isinstance(document, Document):
        if document.is_closed:
            raise ValueError('document closed')
        document = document.this
    if isinstance(document, mupdf.FzDocument):
        return document
    elif isinstance(document, mupdf.PdfDocument):
        return document.super()
    elif document is None:
        assert 0, f'document is None'
    else:
        assert 0, f'Unrecognised {type(document)=}'

def _as_pdf_document(document, required=True):
    '''