plugin text commands: refactoring, text now only contain main commands, and other plugin can add commands themselve:

- registerTextCommands can be called by a plugin in its __init__ method, it looks for methods starting with "cmd_" and register them as new commands
    - addWhoIsCb: add a callback to /whois command, the callback can complete whois informations
    - plugins parrot, XEP-0045 and XEP-0092 now manage their own commands

src/plugins/plugin_xep_0092.py

@@ -31,6 +31,7 @@ PLUGIN_INFO = {
     "type": "XEP",
     "protocols": ["XEP-0092"],
     "dependencies": [],
+    "recommendations": [C.TEXT_CMDS],
     "main": "XEP_0092",
     "handler": "no", # version is already handler in core.xmpp module
     "description": _("""Implementation of Software Version""")
@@ -42,6 +43,10 @@ class XEP_0092(object):
     def __init__(self, host):
         info(_("Plugin XEP_0092 initialization"))
         self.host = host
+        try:
+            self.host.plugins[C.TEXT_CMDS].addWhoIsCb(self._whois, 100)
+        except KeyError:
+            info(_("Text commands not available"))
 
     def getVersion(self, jid_, profile_key=C.PROF_KEY_NONE):
         """ Ask version of the client that jid_ is running
@@ -78,3 +83,20 @@ class XEP_0092(object):
         return tuple(ret)
 
 
+    def _whois(self, whois_msg, target_jid, profile):
+        """ Add software/OS information to whois """
+        def versionCb(version_data):
+            name, version, os = version_data
+            if name:
+                whois_msg.append(_("Client name: %s") % name)
+            if version:
+                whois_msg.append(_("Client version: %s") % version)
+            if os:
+                whois_msg.append(_("Operating system: %s") % os)
+        def versionEb(failure):
+            whois_msg.append(_("Can't find software informations"))
+
+        d = self.getVersion(target_jid, profile)
+        d.addCallbacks(versionCb, versionEb)
+        return d
+