precise_recognizer.py 文件源码

def find_download_exe(self):
        exe_file = join(self.rt.paths.user_config, self.exe_name)
        if exe_file:
            return exe_file
        try:
            if call(self.exe_name + ' < /dev/null', shell=True) == 0:
                return self.exe_name
        except OSError:
            pass

        import platform
        import stat

        def snd_msg(cmd):
            """Send message to faceplate"""
            Popen('echo "' + cmd + '" > /dev/ttyAMA0', shell=True)

        arch = platform.machine()
        exe_file = expanduser('~/.mycroft/precise/' + self.exe_name)
        url = self.url_base + 'dist/' + arch + '/' + self.exe_name

        snd_msg('mouth.text=Updating Listener...')
        self.download(url, exe_file)
        snd_msg('mouth.reset')

        os.chmod(exe_file, os.stat(exe_file).st_mode | stat.S_IEXEC)
        Popen('echo "mouth.reset" > /dev/ttyAMA0', shell=True)
        return exe_file