messages.py 文件源码

def prepare_file(self):
        """
        This sets `self.file` to a fitting :class:`InputFile`
        or a fitting sublcass (:class:`InputFileFromDisk`, :class:`InputFileFromURL`)
        :return: Nothing
        """
        if self.file_content:
            file_name = "file"
            file_suffix = ".blob"
            if self.file_path:
                file_name = os.path.basename(os.path.normpath(self.file_path))  # http://stackoverflow.com/a/3925147
                file_name, file_suffix = os.path.splitext(file_name)  # http://stackoverflow.com/a/541394/3423324
            elif self.file_url:
                from urllib.parse import urlparse  # http://stackoverflow.com/a/18727481/3423324
                url = urlparse(self.file_url)
                file_name = os.path.basename(url.path)
                file_name, file_suffix = os.path.splitext(file_name)
            # end if
            if self.file_mime:
                import mimetypes
                file_suffix = mimetypes.guess_extension(self.file_mime)
                file_suffix = '.jpg' if file_suffix == '.jpe' else file_suffix  # .jpe -> .jpg
            # end if
            if not file_suffix or not file_suffix.strip().lstrip("."):
                logger.debug("file_suffix was empty. Using '.blob'")
                file_suffix = ".blob"
            # end if
            file_name = "{filename}{suffix}".format(filename=file_name, suffix=file_suffix)
            self.file = InputFile(self.file_content, file_name=file_name, file_mime=self.file_mime)
        elif self.file_path:
            self.file = InputFileFromDisk(self.file_path, file_mime=self.file_mime)
        elif self.file_url:
            self.file = InputFileFromURL(self.file_url, file_mime=self.file_mime)
        # end if
    # end def prepare_file