# HG changeset patch
# User Paul Boddie <paul@boddie.org.uk>
# Date 1253128337 -7200
# Node ID c5a5954934c636efae2cb4aded431962299c19ad
# Parent  b52d9f014413ca2a55557d22456238893d16150f
Switched the write caches in FileWriter instances to StringIO instances.

diff -r b52d9f014413 -r c5a5954934c6 iixr/files.py
--- a/iixr/files.py	Wed Sep 16 21:02:35 2009 +0200
+++ b/iixr/files.py	Wed Sep 16 21:12:17 2009 +0200
@@ -19,6 +19,7 @@
 """
 
 from iixr.data import vint
+from cStringIO import StringIO
 import bz2, zlib
 
 # Constants.
@@ -72,7 +73,7 @@
 
     def __init__(self, f):
         File.__init__(self, f)
-        self.cache = []
+        self.cache = StringIO()
         self.cache_length = 0
 
     def write_number(self, number):
@@ -118,18 +119,17 @@
     # Cache-affected methods.
 
     def write(self, s):
-        self.cache.append(s)
-        self.cache_length += len(s)
-        if self.cache_length >= WRITE_CACHE_SIZE:
+        self.cache.write(s)
+        if self.cache.tell() >= WRITE_CACHE_SIZE:
             self.flush()
 
     def tell(self):
-        return self.f.tell() + self.cache_length
+        return self.f.tell() + self.cache.tell()
 
     def flush(self):
-        self.f.write("".join(self.cache))
-        self.cache = []
-        self.cache_length = 0
+        self.cache.seek(0)
+        self.f.write(self.cache.read())
+        self.cache = StringIO()
 
 class FileReader(File):