utils.py 文件源码

def guess_content_type_by_file_name(file_name):
    """
    Get file type by filename.

    :type file_name: string
    :param file_name: None
    =======================
    :return:
        **Type Value**
    """
    mime_map = dict()
    mime_map["js"] = "application/javascript"
    mime_map["xlsx"] = "application/vnd.openxmlformats-officedocument.spreadsheetml.sheet"
    mime_map["xltx"] = "application/vnd.openxmlformats-officedocument.spreadsheetml.template"
    mime_map["potx"] = "application/vnd.openxmlformats-officedocument.presentationml.template"
    mime_map["ppsx"] = "application/vnd.openxmlformats-officedocument.presentationml.slideshow"
    mime_map["pptx"] = "application/vnd.openxmlformats-officedocument.presentationml.presentation"
    mime_map["sldx"] = "application/vnd.openxmlformats-officedocument.presentationml.slide"
    mime_map["docx"] = "application/vnd.openxmlformats-officedocument.wordprocessingml.document"
    mime_map["dotx"] = "application/vnd.openxmlformats-officedocument.wordprocessingml.template"
    mime_map["xlam"] = "application/vnd.ms-excel.addin.macroEnabled.12"
    mime_map["xlsb"] = "application/vnd.ms-excel.sheet.binary.macroEnabled.12"
    try:
        name = os.path.basename(file_name)
        suffix = name.split('.')[-1]
        if suffix in mime_map.keys():
            mime_type = mime_map[suffix]
        else:
            import mimetypes

            mimetypes.init()
            mime_type = mimetypes.types_map["." + suffix]
    except:
        mime_type = 'application/octet-stream'
    if not mime_type:
        mime_type = 'application/octet-stream'
    return mime_type