finish word wrappig, create util toolkit

src/fenrir-package/utils/line_utils.py

@@ -0,0 +1,35 @@
+#!/bin/python
+
+def getPrevLine(currX,currY, currText):
+    if currText == '':
+        return -1, -1, ''
+    wrappedLines = currText.split('\n')         
+    x = currX
+    y = currY 
+    if y - 1 >= 0:
+        y -= 1
+    x = 0
+    currLine = wrappedLines[y]                   
+    return x, y, currLine
+
+def getCurrentLine(currX,currY, currText):
+    if currText == '':
+        return -1, -1, ''
+    wrappedLines = currText.split('\n')         
+    x = currX
+    y = currY
+    x = 0
+    currLine = wrappedLines[y]
+    return x, y, currLine
+
+def getNextLine(currX,currY, currText):
+    if currText == '':
+        return -1, -1, ''
+    wrappedLines = currText.split('\n')         
+    x = currX
+    y = currY
+    if y + 1 < len(wrappedLines):
+        y += 1
+    x = 0
+    currLine = wrappedLines[y]    
+    return x, y, currLine