due: Add 'add' method

due

@@ -5,6 +5,7 @@ import re
 import subprocess
 import sys
 from datetime import datetime
+import parsedatetime
 
 TAGS = ['t', 'due']
 
@@ -46,6 +47,12 @@ class todo_item:
 
         return fancy_text
 
+def add(date_input, desc):
+    cal = parsedatetime.Calendar()
+    time_struct, parse_status = cal.parse(date_input)
+    date = datetime(*time_struct[:6]).strftime("%Y-%m-%d")
+    subprocess.call(["todo.sh", "add", desc, "t:" + date])
+
 def due(search_term="", relative=False):
     command = ["todo.sh", "list"]
     command.append(search_term)