[PATCH 3/3] Fix large-scale exports by 'git-svndump'

[Sergey Yanovich <ynvich@gmail.com>]

* Split revision list using 'tail' shell command.

* Wrap multiple list generation in an endless cycle with 'while true'.
  Exit from cycle when the current list is empty.

* Improve handling of merges by adding '--no-merges --topo-order'i
  arguments to the list generating command.

Signed-off-by: Sergey Yanovich <ynvich@gmail.com>
---
 git-svndump-sync.sh |   16 +++++++++++++++-
 1 files changed, 15 insertions(+), 1 deletions(-)

diff --git a/git-svndump-sync.sh b/git-svndump-sync.sh
index e1c04e1..516edaf 100755
--- a/git-svndump-sync.sh
+++ b/git-svndump-sync.sh
@@ -70,7 +70,14 @@ if test -f $GIT_DIR/svndump/last ; then
 	fi
 fi
 
-list=`GIT_DIR=$GIT_DIR git-rev-list $commit $start`
+while true ; do
+
+list=`GIT_DIR=$GIT_DIR git-rev-list --no-merges --topo-order $commit $start |
+tail -n 8`
+
+if test -z "$list" ; then
+	exit 0
+fi
 
 diffs=""
 for c in $list ; do
@@ -79,7 +86,14 @@ done
 
 for c in $diffs ; do
 	GIT_DIR=$GIT_DIR git-svn commit-diff -r$rev $last $c $url
+	if test $? -ne 0 ; then
+		exit $?
+	fi
 	echo "$c" > $GIT_DIR/svndump/last
 	last=$c
 	let rev++
 done
+
+start=^$last
+
+done
-- 
1.5.2.1