lang_integration.py

import sublime
import sublime_plugin

class ClojureAutoTelnetRepl(sublime_plugin.WindowCommand):
	def is_running(self, port_str):
		"""Check if port is open on localhost"""
		import socket
		port = int(port_str)
		s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
		res = s.connect_ex(("127.0.0.1", port))
		s.close()
		return res == 0 

	def choices(self):
		import os.path, re
		choices = []
		for folder in self.window.folders():
			proj_file = os.path.join(folder, "project.clj")
			try:
				with open(proj_file) as f:
					data = f.read()
					port_match = re.search(":repl-port\s+(\d{1,})", data)
					if not port_match:
						continue
					port = port_match.group(1)
					description = proj_file
					desc_match = re.search(r':description\s+"([^"]+)"', data)
					if desc_match:
						description = desc_match.group(1)
					if self.is_running(port):
						description += " (active)"
					else: 
						description += " (not responding)"
					choices.append([description, port])
			except IOError, e:
				pass #just ignore it, no file or no access
		
		return choices + [["Custom telnet", "Pick your own telnet port number to Lein REPL"]]

	def run(self):
		from functools import partial
		choices = self.choices()
		if len(choices) == 1: #only custom telnet action
			self.on_done(choices, 0)
		else:
			on_done = partial(self.on_done, choices)
			self.window.show_quick_panel(self.choices(), on_done)

	def on_done(self, choices, index):
		if index == -1:
			return
		if index == len(choices) - 1:
			self.window.show_input_panel("Enter port number", "",
										 self.open_telnet_repl, 
										 None, None)
			return 
		self.open_telnet_repl(choices[index][1])

	def open_telnet_repl(self, port_str):
		try:
			port = int(port_str)
		except ValueError:
			return
		self.window.run_command("repl_open", {"type":"telnet", "encoding":"utf8", "host":"localhost", "port":port, 
								"external_id":"clojure", "syntax":"Packages/Clojure/Clojure.tmLanguage"})