[PATCH] fetch2/svn: Enhance to cope with subversion 1.7 upgrade

[Richard Purdie <richard.purdie@linuxfoundation.org>]

svn changed working checkout formats between 1.6 and 1.7. Its convoluted to
detect what format a given working copy is in so the simplest solution is simply
to run "svn upgrade" within the working copy.

The base svn command variable is relocated slightly to enable this new code to
work effectively.

Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
---
diff --git a/bitbake/lib/bb/fetch2/svn.py b/bitbake/lib/bb/fetch2/svn.py
index 59d7ccb..bc5b96b 100644
--- a/bitbake/lib/bb/fetch2/svn.py
+++ b/bitbake/lib/bb/fetch2/svn.py
@@ -49,6 +49,8 @@ class Svn(FetchMethod):
         if not "module" in ud.parm:
             raise MissingParameterError('module', ud.url)
 
+        ud.basecmd = d.getVar('FETCHCMD_svn', True)
+
         ud.module = ud.parm["module"]
 
         # Create paths to svn checkouts
@@ -69,8 +71,6 @@ class Svn(FetchMethod):
         command is "fetch", "update", "info"
         """
 
-        basecmd = data.expand('${FETCHCMD_svn}', d)
-
         proto = ud.parm.get('proto', 'svn')
 
         svn_rsh = None
@@ -88,7 +88,7 @@ class Svn(FetchMethod):
             options.append("--password %s" % ud.pswd)
 
         if command == "info":
-            svncmd = "%s info %s %s://%s/%s/" % (basecmd, " ".join(options), proto, svnroot, ud.module)
+            svncmd = "%s info %s %s://%s/%s/" % (ud.basecmd, " ".join(options), proto, svnroot, ud.module)
         else:
             suffix = ""
             if ud.revision:
@@ -96,9 +96,9 @@ class Svn(FetchMethod):
                 suffix = "@%s" % (ud.revision)
 
             if command == "fetch":
-                svncmd = "%s co %s %s://%s/%s%s %s" % (basecmd, " ".join(options), proto, svnroot, ud.module, suffix, ud.module)
+                svncmd = "%s co %s %s://%s/%s%s %s" % (ud.basecmd, " ".join(options), proto, svnroot, ud.module, suffix, ud.module)
             elif command == "update":
-                svncmd = "%s update %s" % (basecmd, " ".join(options))
+                svncmd = "%s update %s" % (ud.basecmd, " ".join(options))
             else:
                 raise FetchError("Invalid svn command %s" % command, ud.url)
 
@@ -117,6 +117,11 @@ class Svn(FetchMethod):
             logger.info("Update " + loc)
             # update sources there
             os.chdir(ud.moddir)
+            # We need to attempt to run svn upgrade first in case its an older working format
+            try:
+                runfetchcmd(ud.basecmd + " upgrade", d)
+            except FetchError:
+                pass
             logger.debug(1, "Running %s", svnupdatecmd)
             bb.fetch2.check_network_access(d, svnupdatecmd, ud.url)
             runfetchcmd(svnupdatecmd, d)