# HG changeset patch
# User Mads Kiilerich <madski@unity3d.com>
# Date 2013-04-14 23:41:49
# Node ID 5f9019e6d451aed829bbae55f56ed317aa5c9e17
# Parent  3de9b1f9ebc3e95db2d77079bb1f33b15cdda311

largefiles: don't store whole file in memory for 'cat'

diff --git a/hgext/largefiles/lfcommands.py b/hgext/largefiles/lfcommands.py
--- a/hgext/largefiles/lfcommands.py
+++ b/hgext/largefiles/lfcommands.py
@@ -542,7 +542,8 @@ def catlfile(repo, lfile, rev, filename)
     path = lfutil.usercachepath(repo.ui, hash)
     fpout = cmdutil.makefileobj(repo, filename)
     fpin = open(path, "rb")
-    fpout.write(fpin.read())
+    for chunk in lfutil.blockstream(fpin):
+        fpout.write(chunk)
     fpout.close()
     fpin.close()
     return 0