Data reading seems to work

1 files changed, 20 insertions, 8 deletions

diff --git a/fusearchive.py b/fusearchive.py
index f648235..bcfed7c 100755
--- a/fusearchive.py
+++ b/fusearchive.py
@@ -435,21 +435,33 @@ class FuseArchive(Fuse):
                 + " length: " + str( length ) )
 
             data_read = 0
-            data = None
+            data = ''
             index = int( offset / self.chunk_size )
             rest = offset % self.chunk_size
+            is_eof = False
 
             # Keep reading chunks until we have at least this much data
-            while data_read < length:
+            while data_read < length and not is_eof:
                 dmsg( 3, "Pulling chunk data" )
                 self._load_chunk( index )
-                chunk_remaining = self.chunk_size - rest
-                data += substr( self.chunk[ rest:chunk_remaining ] )
-                data_read = len( data )
-                index += 1
-                rest = 0
+                if len(self.chunk):
+                    chunk_remaining = len(self.chunk) - rest
+                    to_read = chunk_remaining
+                    data_left = length - data_read
+                    if data_left < chunk_remaining:
+                        to_read = data_left
+
+                    dmsg( 3, "Copying " + str(to_read) + " bytes" )
+
+                    data += self.chunk[ rest:chunk_remaining ]
+                    data_read += to_read
+                    index += 1
+                    rest = 0
+                else:
+                    dmsg( 3, "No more chunk data, bye" )
+                    is_eof = True
 
-            return data[ :length ]
+            return data
 
         def write(self, buf, offset):
             dmsg( 3, "Writing to " + self.orig_path + " offset: " + str( offset ) )