Imported Upstream version 7.6.0upstream/7.6.0

1 files changed, 25 insertions, 2 deletions

diff --git a/nikola/plugins/command/version.py b/nikola/plugins/command/version.py
index 9b42423..b6520d7 100644
--- a/nikola/plugins/command/version.py
+++ b/nikola/plugins/command/version.py
@@ -1,6 +1,6 @@
 # -*- coding: utf-8 -*-
 
-# Copyright © 2012-2014 Roberto Alsina and others.
+# Copyright © 2012-2015 Roberto Alsina and others.
 
 # Permission is hereby granted, free of charge, to any
 # person obtaining a copy of this software and associated
@@ -26,19 +26,42 @@
 
 from __future__ import print_function
 
+import lxml
+import requests
+
 from nikola.plugin_categories import Command
 from nikola import __version__
 
+URL = 'https://pypi.python.org/pypi?:action=doap&name=Nikola'
+
 
 class CommandVersion(Command):
     """Print the version."""
 
     name = "version"
 
-    doc_usage = ""
+    doc_usage = "[--check]"
     needs_config = False
     doc_purpose = "print the Nikola version number"
+    cmd_options = [
+        {
+            'name': 'check',
+            'long': 'check',
+            'short': '',
+            'default': False,
+            'type': bool,
+            'help': "Check for new versions.",
+        }
+    ]
 
     def _execute(self, options={}, args=None):
         """Print the version number."""
         print("Nikola v" + __version__)
+        if options.get('check'):
+            data = requests.get(URL).text
+            doc = lxml.etree.fromstring(data.encode('utf8'))
+            revision = doc.findall('*//{http://usefulinc.com/ns/doap#}revision')[0].text
+            if revision == __version__:
+                print("Nikola is up-to-date")
+            else:
+                print("The latest version of Nikola is v{0} -- please upgrade using `pip install --upgrade Nikola=={0}` or your system package manager".format(revision))