Try detecting if twmn is installed

libs/pytwmn.py

@@ -1,19 +1,40 @@
 import os, socket
 
-def init():
-    port = 9797
-    try:
-        with open(os.path.expanduser("~/.config/twmn/twmn.conf")) as f:
-            for line in f.readlines():
-                if line.startswith("port=") and \
-                   line[5:-1].isdigit():
-                    port = int(line[5:-1])
-                    break
-    except IOError:
-        pass
+class TwmnError(Exception):
+    UNWN_ERR = -1
+    NO_TWMND = -2
+    NO_CONF  = -3
+    def __init__(self, code):
+        self.code = code
+    def __str__(self):
+        if self.code == TwmnError.NO_TWMND:
+            return "Unable to connect to twmnd"
+        elif self.code == TwmnError.NO_CONF:
+            return "Could not find twmn configuration file"
+        else:
+            return "Unknown twmn error"
+
+
+def confExists():
+    return os.path.exists(os.path.expanduser("~/.config/twmn/twmn.conf"))
+
+def init(host="127.0.0.1", port=None):
+    if not port:
+        port = 9797
+        try:
+            with open(os.path.expanduser("~/.config/twmn/twmn.conf")) as f:
+                for line in f.readlines():
+                    if line.startswith("port=") and \
+                       line[5:-1].isdigit():
+                        port = int(line[5:-1])
+                        break
+        except IOError:
+            raise TwmnError(TwmnError.NO_CONF)
+    if type(port) == type(str()):
+        port = int(port)
     global s
     s = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
-    s.connect(("127.0.0.1", port))
+    s.connect((host, port))
 
 class Notification(object):
     def __init__(self, title="", msg="", icon=""):
@@ -22,11 +43,27 @@ class Notification(object):
         if icon.startswith("file://"):
             icon = icon[7:]
         self.icon = icon
+        self.time = None
+
+    def set_duration(self, time):
+        self.time = time
 
     def show(self):
-        s.send("<root><title>" + self.title + "</title><content>" + self.msg + "</content></root>")
+        try:
+            if self.time is None:
+                s.send("<root><title>" + self.title + "</title>"
+                    "<content>" + self.msg + "</content>"
+                    "<icon>" + self.icon + "</icon></root>")
+            else:
+                s.send("<root><title>" + self.title + "</title>"
+                    "<content>" + self.msg + "</content>"
+                    "<icon>" + self.icon + "</icon>"
+                    "<duration>" + str(self.time) + "</duration></root>")
+        except:
+            raise TwmnError(TwmnError.NO_TWMND)
 
 if __name__ == "__main__":
     init()
     n = Notification("PyTwmn", "This is a notification!")
+    n.set_duration(1000)
     n.show()