1 files changed, 80 insertions, 0 deletions
diff --git a/src/killring.py b/src/killring.py
new file mode 100644
index 0000000..b47a04f
--- /dev/null
+++ b/src/killring.py
@@ -0,0 +1,80 @@
+#!/usr/bin/env python3
+# -*- coding: utf-8 -*-
+'''
+featherweight – A lightweight terminal news feed reader
+
+Copyright © 2013  Mattias Andrée (maandree@member.fsf.org)
+
+This program is free software: you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation, either version 3 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program.  If not, see <http://www.gnu.org/licenses/>.
+'''
+
+
+class Killring():
+    '''
+    Killring class
+    '''
+    
+    def __init__(self, limit = 50):
+        '''
+        Constructor
+        
+        @param  limit:int  The maximum size of the killring
+        '''
+        self.killring, self.killmax, self.killptr = [], limit, 0
+    
+    
+    def add(self, text):
+        '''
+        Add a text to the killring
+        
+        @param  text:str  The text to add
+        '''
+        self.killring.append(text)
+        if len(self.killring) > self.killmax:
+            self.killring[:] = self.killring[1:]
+    
+    
+    def is_empty(self):
+        '''
+        Checks if the killring is empty
+        
+        @return  :bool  Whether the killring is empty
+        '''
+        return len(self.killring) == 0
+    
+    
+    def reset(self):
+        '''
+        Resets the killring pointer
+        '''
+        self.killptr = len(self.killring) - 1
+    
+    
+    def next(self):
+        '''
+        Get to the next item in the killring
+        '''
+        self.killptr -= 1
+        if self.killptr < 0:
+            self.killptr += len(self.killring)
+    
+    
+    def get(self):
+        '''
+        Gets the current item in the killring
+        
+        @return  :str  The current item in the killring
+        '''
+        return self.killring[self.killptr]
+