# HG changeset patch
# User FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
# Date 1394294608 -32400
# Node ID c20f4898631e2f5f954d7e8afe5fc05b14b7e55f
# Parent  37cdf1fca1b27ae970c7d5ea9a6abf5f39d95c6f
changegroup: add "vfs" argument to "writebundle()" for relative access via vfs

Before this patch, filename specified to "changegroup.writebundle()"
should be absolute one.

In some cases, they should be relative to repository root, store and
so on (backup before strip, for example).

This patch adds "vfs" argument to "writebundle()", and makes
"writebundle()" open (and unlink) "filename" via vfs for relative
access, if both filename and vfs are specified.

diff -r 37cdf1fca1b2 -r c20f4898631e mercurial/changegroup.py
--- a/mercurial/changegroup.py	Sun Mar 09 01:03:28 2014 +0900
+++ b/mercurial/changegroup.py	Sun Mar 09 01:03:28 2014 +0900
@@ -59,7 +59,7 @@
 # hgweb uses this list to communicate its preferred type
 bundlepriority = ['HG10GZ', 'HG10BZ', 'HG10UN']
 
-def writebundle(cg, filename, bundletype):
+def writebundle(cg, filename, bundletype, vfs=None):
     """Write a bundle file and return its filename.
 
     Existing files will not be overwritten.
@@ -72,7 +72,10 @@
     cleanup = None
     try:
         if filename:
-            fh = open(filename, "wb")
+            if vfs:
+                fh = vfs.open(filename, "wb")
+            else:
+                fh = open(filename, "wb")
         else:
             fd, filename = tempfile.mkstemp(prefix="hg-bundle-", suffix=".hg")
             fh = os.fdopen(fd, "wb")
@@ -112,7 +115,10 @@
         if fh is not None:
             fh.close()
         if cleanup is not None:
-            os.unlink(cleanup)
+            if filename and vfs:
+                vfs.unlink(cleanup)
+            else:
+                os.unlink(cleanup)
 
 def decompressor(fh, alg):
     if alg == 'UN':