node_client.py 文件源码

def __init__(self, script_path):
        """
        Starts a node client (if not already started) and communicate with it.
        The script file to run is passed to the constructor.
        """
        super(ServerClient, self).__init__(script_path)

        # start node process
        pref_settings = sublime.load_settings('Preferences.sublime-settings')
        node_path = pref_settings.get('node_path')
        if node_path:
            print("Path of node executable is configured as: " + node_path)
            configured_node_path = os.path.expandvars(node_path)
            if NodeCommClient.is_executable(configured_node_path):
                node_path = configured_node_path
            else:
                node_path = None
                print("Configured node path is not a valid executable.")
        if not node_path:
            if os.name == "nt":
                node_path = "node"
            else:
                node_path = NodeCommClient.which("node")
        if not node_path:
            path_list = os.environ["PATH"] + os.pathsep + "/usr/local/bin" + os.pathsep + "$NVM_BIN"
            print("Unable to find executable file for node on path list: " + path_list)
            print("To specify the node executable file name, use the 'node_path' setting")
            self.server_proc = None
        else:
            global_vars._node_path = node_path
            print("Trying to spawn node executable from: " + node_path)
            try:
                if os.name == "nt":
                    # linux subprocess module does not have STARTUPINFO
                    # so only use it if on Windows
                    si = subprocess.STARTUPINFO()
                    si.dwFlags |= subprocess.SW_HIDE | subprocess.STARTF_USESHOWWINDOW
                    self.server_proc = subprocess.Popen([node_path, script_path],
                                                         stdin=subprocess.PIPE, stdout=subprocess.PIPE, startupinfo=si)
                else:
                    log.debug("opening " + node_path + " " + script_path)
                    self.server_proc = subprocess.Popen([node_path, script_path],
                                                         stdin=subprocess.PIPE, stdout=subprocess.PIPE)
            except:
                self.server_proc = None
        # start reader thread
        if self.server_proc and (not self.server_proc.poll()):
            log.debug("server proc " + str(self.server_proc))
            log.debug("starting reader thread")
            readerThread = threading.Thread(target=ServerClient.__reader, args=(
                self.server_proc.stdout, self.msgq, self.eventq, self.asyncReq, self.server_proc, self.event_handlers))
            readerThread.daemon = True
            readerThread.start()