From 6b728695cb73e4249439dbd39b355e4520eb1071 Mon Sep 17 00:00:00 2001
From: chabisik <chabisik@insa-toulouse.fr>
Date: Mon, 28 Mar 2022 01:23:08 +0200
Subject: [PATCH] Adding encode and decode functions

---
 CTPLICA/comproject.py | 43 +++++++++++++++++++++++++++++++++++++------
 1 file changed, 37 insertions(+), 6 deletions(-)

diff --git a/CTPLICA/comproject.py b/CTPLICA/comproject.py
index 7144808..3e5a26b 100644
--- a/CTPLICA/comproject.py
+++ b/CTPLICA/comproject.py
@@ -1,8 +1,7 @@
 #!/usr/bin/python3
 
 import sys
-from typing import Sequence
-from unittest import result
+from typing import List, Sequence
 import numpy
 import time
 
@@ -65,7 +64,9 @@ def unoverlap(arg: str, apply_format: bool=True) -> Sequence[str]:
     arg1 = '' #for stocking unoverlapped values
     arg2 = ''
     arg_as_string = str(arg)
-    # MUST TRY TO PAD THE STRING HERE IN CASE good_format were applied on it during operations
+    # MUST TRY TO PAD THE STRING HERE IN CASE good_format were applied on it during operations (I verified and not need for the moment)
+    arg_integer_part = arg_as_string
+    arg_decimal_part = ''
     arg_is_full_integer = True
     try:
         arg_integer_part, arg_decimal_part = arg_as_string.split(".")
@@ -375,6 +376,33 @@ def sb_division(arg1: str, arg2: str, digits_after_decimal_point: int=5, apply_f
 
 
 #when encoding, verify overlap_result being even as 
+def encode(data: List[str]):
+    assert len(data) >= 2
+    code = overlap( sb_addition(data[0], data[1]), sb_substract(data[0], data[1]) )
+    if len(data)>2:
+        for element in data[2:]:
+            code = overlap( sb_addition(code, element), sb_substract(code, element) )
+    return code
+
+
+def decode(code: str, size):
+    data = []
+    r1 = ''
+    r2 = ''
+    while len(data)!=(size-2):
+        r1, r2 = unoverlap(code)
+        code = sb_division( sb_addition(r1,r2), '2' )
+        element = sb_division( sb_substract(r1,r2), '2' )
+        data.append(element)
+    r1, r2 = unoverlap(code)
+    data.append(sb_division( sb_substract(r1,r2), '2' ))
+    data.append(sb_division( sb_addition(r1,r2), '2' ))
+    result = []
+    for index in range(len(data)-1,-1,-1): result.append(data[index])
+    return result
+    
+
+
 
 if __name__=='__main__':
     #print("add", sb_addition("2222222222222222222222222222222222222222.55", "2.55") )
@@ -395,6 +423,9 @@ if __name__=='__main__':
     #ov_r = overlap('-12512.252','-125')
     #print(unoverlap(ov_r))
     #print("mult", sb_multiply('-125.32564','100000.0'))
-    print(sb_division('0.0001','-12.25', digits_after_decimal_point=15))
-    print(sb_multiply('-10.00000','-0.0001'))
-    pass
\ No newline at end of file
+    #print(sb_division('22','7', digits_after_decimal_point=15))
+    #print(sb_multiply('100000.00000','-0111111.0001'))
+    #print(unoverlap('132.1230010'))
+    c = encode(['2.55','1.27','0.50','0.25','0.01','1.27','0','0.78','0.99','0.54','2.31','2.55','1.27','0.50','0.50','0.50'])
+    print("c",c)
+    print(decode(c, size=16))
\ No newline at end of file