__init__.py 文件源码

def check_word_or_excel(self, fileobj, detected_type, extension):
        """
        Returns proper mimetype in case of word or excel files
        """
        word_strings = ['Microsoft Word', 'Microsoft Office Word', 'Microsoft Macintosh Word']
        excel_strings = ['Microsoft Excel', 'Microsoft Office Excel', 'Microsoft Macintosh Excel']
        office_strings = ['Microsoft OOXML']

        file_type_details = magic.from_buffer(fileobj.read(READ_SIZE))

        fileobj.seek(0)

        if any(string in file_type_details for string in word_strings):
            detected_type = 'application/msword'
        elif any(string in file_type_details for string in excel_strings):
            detected_type = 'application/vnd.ms-excel'
        elif any(string in file_type_details for string in office_strings) or \
                (detected_type == 'application/vnd.ms-office'):
            if extension in ('.doc', '.docx'):
                detected_type = 'application/msword'
            if extension in ('.xls', '.xlsx'):
                detected_type = 'application/vnd.ms-excel'

        return detected_type