From 515baa90aac601caff64c39ce8160c81517a46ed Mon Sep 17 00:00:00 2001
From: yg2f <yoann@terminajones.com>
Date: Sun, 10 May 2015 19:55:20 +0200
Subject: [PATCH] fixes memory overflow with ldd4.3

ldd4.3 Assets.lif contains a large db.lif file which fails to be
extracted because of a memory overflow error with python 2.7.
this path make extraction by blocks of 16MB. if the block size is too
large, it is divided by 2 till it fits the file size ... (could be
improved though)
---
 LIFExtractor.py | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/LIFExtractor.py b/LIFExtractor.py
index d726e67..bd96013 100644
--- a/LIFExtractor.py
+++ b/LIFExtractor.py
@@ -123,8 +123,14 @@ def recurse(prefix, offset):
     
     #Loop through the list of files, saving them.
     for a in fileList:
+        print("- extracting : "+outFolder+a[0])
         f = open((outFolder + a[0]), "wb")
-        f.write(fileData[a[1]:a[1]+a[2]])
+        b = a[1]; e = a[1]+a[2] ; step = 0x1000000
+        while b < e :
+            while (b+step) > e :
+                step /= 2
+            f.write(fileData[b:b+step])
+            b += step
         f.close()
     
     print("\tCOMPLETE: " + str(len(fileList)) + " files in " + str(len(folderList)) + " folders extracted.")