Add api/examples/print-events.

(imported from commit 8c0e3f7809f06e4aff3bd8c0640479819853c418)

examples/print-events

@@ -0,0 +1,51 @@
+#!/usr/bin/env python
+# -*- coding: utf-8 -*-
+
+# Copyright © 2012 Zulip, Inc.
+#
+# Permission is hereby granted, free of charge, to any person obtaining a copy
+# of this software and associated documentation files (the "Software"), to deal
+# in the Software without restriction, including without limitation the rights
+# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+# copies of the Software, and to permit persons to whom the Software is
+# furnished to do so, subject to the following conditions:
+#
+# The above copyright notice and this permission notice shall be included in
+# all copies or substantial portions of the Software.
+#
+# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+# THE SOFTWARE.
+
+import sys
+import os
+import optparse
+
+usage = """print-events --user=<bot's email address> --api-key=<bot's api key> [options]
+
+Prints out certain events received by the indicated bot or user matching the filter below.
+
+Example: print-events --user=tabbott@zulip.com --api-key=a0b1c2d3e4f5a6b7c8d9e0f1a2b3c4d5
+
+You can omit --user and --api-key arguments if you have a properly set up ~/.zuliprc
+"""
+sys.path.append(os.path.join(os.path.dirname(__file__), '..'))
+import zulip
+
+parser = optparse.OptionParser(usage=usage)
+parser.add_option_group(zulip.generate_option_group(parser))
+(options, args) = parser.parse_args()
+
+client = zulip.init_from_options(options)
+
+def print_event(event):
+    print event
+
+# This is a blocking call, and will continuously poll for new events
+# Note also the filter here is messages to the stream Denmark; if you
+# don't specify event_types it'll print all events.
+client.call_on_each_event(print_event, event_types=["message"], narrow=[["stream", "Denmark"]])