pimp.py 文件源码

def downloadPackageOnly(self, output=None):
        """Download a single package, if needed.

        An MD5 signature is used to determine whether download is needed,
        and to test that we actually downloaded what we expected.
        If output is given it is a file-like object that will receive a log
        of what happens.

        If anything unforeseen happened the method returns an error message
        string.
        """

        scheme, loc, path, query, frag = urlparse.urlsplit(self._dict['Download-URL'])
        path = urllib.url2pathname(path)
        filename = os.path.split(path)[1]
        self.archiveFilename = os.path.join(self._db.preferences.downloadDir, filename)
        if not self._archiveOK():
            if scheme == 'manual':
                return "Please download package manually and save as %s" % self.archiveFilename
            downloader = PimpUrllibDownloader(None, self._db.preferences.downloadDir,
                watcher=self._db.preferences.watcher)
            if not downloader.download(self._dict['Download-URL'],
                    self.archiveFilename, output):
                return "download command failed"
        if not os.path.exists(self.archiveFilename) and not NO_EXECUTE:
            return "archive not found after download"
        if not self._archiveOK():
            return "archive does not have correct MD5 checksum"