Added compatibiltiy of code to Python3

package.xml

@@ -15,22 +15,6 @@
   <!--   BSD, MIT, Boost Software License, GPLv2, GPLv3, LGPLv2.1, LGPLv3 -->
   <license>TODO</license>
 
-
-  <!-- Url tags are optional, but mutiple are allowed, one per tag -->
-  <!-- Optional attribute type can be: website, bugtracker, or repository -->
-  <!-- Example: -->
-  <!-- <url type="website">http://wiki.ros.org/cloud_ros</url> -->
-
-
-  <!-- Author tags are optional, mutiple are allowed, one per tag -->
-  <!-- Authors do not have to be maintianers, but could be -->
-  <!-- Example: -->
-  <!-- <author email="jane.doe@example.com">Jane Doe</author> -->
-
-
-  <!-- The *_depend tags are used to specify dependencies -->
-  <!-- Dependencies can be catkin packages or system dependencies -->
-  <!-- Examples: -->
   <!-- Use build_depend for packages you need at compile time: -->
   <build_depend>message_generation</build_depend>
   <!-- Use buildtool_depend for build tool packages: -->
@@ -43,6 +27,7 @@
   <build_depend>roscpp</build_depend>
   <build_depend>rospy</build_depend>
   <build_depend>std_msgs</build_depend>
+  <build_depend>python3-websocket</build_depend>
   <run_depend>roscpp</run_depend>
   <run_depend>rospy</run_depend>
   <run_depend>std_msgs</run_depend>

src/boolean_client.py

@@ -0,0 +1,94 @@
+#!/usr/bin/python3
+
+import time
+import locale
+import curses
+import sys
+from pySpacebrew.spacebrew import Spacebrew
+
+# set the encoding to use for the terminal string
+locale.setlocale(locale.LC_ALL, '')
+code = locale.getpreferredencoding()
+
+# initialize the terminal display
+stdscr = curses.initscr()
+stdscr.keypad(1)
+curses.noecho()			# turn off echo
+curses.curs_set(0)		# turn off cursor
+
+# set-up a variables to hold coordinates
+pos_state = 15
+local_state = False
+remote_state = False
+
+# get app name and server from query string
+name = "pyBoolean Example"
+# server = "sandbox.spacebrew.cc"
+server = "forever-spacebrew.herokuapp.com/"
+
+for cur_ele in sys.argv:
+    if "name" in cur_ele:
+        name = cur_ele[5:]
+    if "server" in cur_ele:
+        server = cur_ele[7:]
+
+
+# configure the spacebrew client
+brew = Spacebrew(name=name, server=server)
+brew.addPublisher("local state", "boolean")
+brew.addSubscriber("remote state", "boolean")
+
+
+def handleBoolean(value):
+    global code, stdscr
+    stdscr.addstr(pos_remote, pos_state, (str(value) + "  ").encode(code))
+    stdscr.refresh()
+
+
+brew.subscribe("remote state", handleBoolean)
+
+try:
+    # start-up spacebrew
+    brew.start()
+
+    # create and load info message at the top of the terminal window
+    info_msg = "This is the pySpacebrew library boolean example. It sends out a boolean message every time\n"
+    info_msg += "the enter or return key is pressed and displays the latest boolean value it has received.\n"
+    info_msg += "Connected to Spacebrew as: " + name + "\n"
+    info_msg += "IMPORTANT: don't shrink the Terminal window as it may cause app to crash (bug with curses lib)."
+    stdscr.addstr(0, 0, info_msg.encode(code))
+    stdscr.refresh()
+
+    # update the location for the remote and local dice state
+    pos_local = stdscr.getyx()[0] + 2
+    pos_remote = pos_local + 2
+
+    # display the label for the remote and local boolean states
+    stdscr.addstr(pos_local, 0, "local state: ".encode(code), curses.A_BOLD)
+    stdscr.addstr(pos_remote, 0, "remote state: ".encode(code), curses.A_BOLD)
+
+    # display the starting state for remote and local boolean states
+    stdscr.addstr(pos_local, pos_state, (str(local_state) + "  ").encode(code))
+    stdscr.addstr(pos_remote, pos_state,
+                  (str(remote_state) + "  ").encode(code))
+    stdscr.refresh()
+
+    # listen for keypresses and handle input
+    while 1:
+        c = stdscr.getch()
+        local_state = not local_state
+        brew.publish('local state', True)
+
+        if (c == 10 or c == 13):
+            stdscr.addstr(pos_local, pos_state,
+                          (str(local_state) + "  ").encode(code))
+
+        stdscr.refresh()
+
+# closing out the app and returning terminal to old settings
+finally:
+    brew.stop()
+    curses.nocbreak()
+    stdscr.keypad(0)
+    curses.echo()
+    curses.endwin()