# HG changeset patch
# User Paul Boddie <paul@boddie.org.uk>
# Date 1297470238 -3600
# Node ID b75bd39cf61f4fdec7d3b85b66f50f443e194adb
# Parent  2b56cb8c19476b257ce0e47ee2e286fd04240749
Changed cache slicing to record pointer updating.

diff -r 2b56cb8c1947 -r b75bd39cf61f iixr/files.py
--- a/iixr/files.py	Sat Feb 12 01:02:40 2011 +0100
+++ b/iixr/files.py	Sat Feb 12 01:23:58 2011 +0100
@@ -187,14 +187,14 @@
         pass
 
     def seek(self, offset):
-        if self.cache_start <= offset < self.cache_start + len(self.cache):
-            self.cache = self.cache[offset - self.cache_start:]
+        from_cache_start = offset - self.cache_start
+        if 0 <= from_cache_start < len(self.cache):
+            self.record_start = self.record_end = from_cache_start
         else:
             self.f.seek(offset)
             self.cache = array('B')
-        self.cache_start = offset
-        self.record_start = 0
-        self.record_end = 0
+            self.cache_start = offset
+            self.record_start = self.record_end = 0
         self.reset()
 
     def tell(self):