# HG changeset patch
# User Adrian Buehlmann <adrian@cadifra.com>
# Date 1275060514 -7200
# Node ID 640d419725d057492a63f4e9d84d49ff5111607c
# Parent  0bb67503ad4b05a91531e6e6a066e2b4682a9de6
util.copyfiles: don't try os_link() again if it failed before

If the os_link() call on the first file in the directory fails [1],
we switch mode to using shutil.copy() for all remaining files.

[1] happens for example on Windows for every file when cloning from a UNC
path without specifying --pull.

diff -r 0bb67503ad4b -r 640d419725d0 mercurial/util.py
--- a/mercurial/util.py	Mon May 31 21:37:01 2010 +0200
+++ b/mercurial/util.py	Fri May 28 17:28:34 2010 +0200
@@ -451,7 +451,7 @@
         for name, kind in osutil.listdir(src):
             srcname = os.path.join(src, name)
             dstname = os.path.join(dst, name)
-            copyfiles(srcname, dstname, hardlink)
+            hardlink = copyfiles(srcname, dstname, hardlink)
     else:
         if hardlink:
             try:
@@ -462,6 +462,8 @@
         else:
             shutil.copy(src, dst)
 
+    return hardlink
+
 class path_auditor(object):
     '''ensure that a filesystem path contains no banned components.
     the following properties of a path are checked: