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# Copyright (C) 2015 James E. Blair <corvus@gnu.org>
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
import os
import threading
import SocketServer
class ConsoleHandler(SocketServer.StreamRequestHandler):
def handle(self):
server = self.server.server
while True:
try:
data = self.rfile.readline()
except Exception:
break
if not data:
break
data = data.strip()
if data == 'list':
for i, slide in enumerate(server.list()):
self.wfile.write('slide %i %s\n' % (i, slide.title))
self.wfile.write('end\n')
elif data == 'current':
i, slide = server.current()
self.wfile.write('current %i %i %s\n' % (
i, slide.progressive_state, slide.title))
elif data == 'next':
i, slide = server.next()
self.wfile.write('current %i %i %s\n' % (
i, slide.progressive_state, slide.title))
elif data == 'prev':
i, slide = server.prev()
self.wfile.write('current %i %i %s\n' % (
i, slide.progressive_state, slide.title))
elif data.startswith('jump'):
parts = data.split()
i, slide = server.jump(int(parts[1].strip()))
self.wfile.write('current %i %i %s\n' % (
i, slide.progressive_state, slide.title))
elif data == 'size':
size = server.size()
self.wfile.write('size %s %s\n' % size)
class ThreadedTCPServer(SocketServer.ThreadingMixIn, SocketServer.TCPServer):
allow_reuse_address=True
class ConsoleServer(object):
def __init__(self, presenter, host='localhost', port=1292):
self.presenter = presenter
self.server = ThreadedTCPServer((host, port), ConsoleHandler)
self.server.server = self
self.lock = threading.Lock()
def start(self):
self.thread=threading.Thread(target=self._run, name="Console Server")
self.thread.daemon=True
self.thread.start()
def _run(self):
self.server.serve_forever()
def stop(self):
self.server.shutdown()
def list(self):
return self.presenter.program
def current(self):
s = self.presenter.program[self.presenter.pos]
return (self.presenter.pos, s)
def size(self):
return self.presenter.loop.screen.get_cols_rows()
def next(self):
self.lock.acquire()
try:
os.write(self.presenter.server_pipe_in, 'next')
self.presenter.server_pipe_out_read.readline()
return self.current()
finally:
self.lock.release()
def prev(self):
self.lock.acquire()
try:
os.write(self.presenter.server_pipe_in, 'prev')
self.presenter.server_pipe_out_read.readline()
return self.current()
finally:
self.lock.release()
def jump(self, pos):
self.lock.acquire()
try:
os.write(self.presenter.server_pipe_in, 'jump %s' % (pos,))
self.presenter.server_pipe_out_read.readline()
return self.current()
finally:
self.lock.release()
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