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# -*- coding: utf-8 -*-
import readline
from Queue import Empty
class ZMQCompleter(object):
"""Client-side completion machinery.
How it works: self.complete will be called multiple times, with
state=0,1,2,... When state=0 it should compute ALL the completion matches,
and then return them for each value of state."""
def __init__(self, shell, km):
self.shell = shell
self.km = km
self.matches = []
def complete_request(self,text):
line = readline.get_line_buffer()
cursor_pos = readline.get_endidx()
# send completion request to kernel
# Give the kernel up to 0.5s to respond
msg_id = self.km.shell_channel.complete(text=text, line=line,
cursor_pos=cursor_pos)
msg = self.km.shell_channel.get_msg(timeout=0.5)
if msg['parent_header']['msg_id'] == msg_id:
return msg["content"]["matches"]
return []
def rlcomplete(self, text, state):
if state == 0:
try:
self.matches = self.complete_request(text)
except Empty:
print('WARNING: Kernel timeout on tab completion.')
try:
return self.matches[state]
except IndexError:
return None
def complete(self, text, line, cursor_pos=None):
return self.rlcomplete(text, 0)
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