maps: implement sqlite revmap This patch adds the SqliteRevMap, which has a same interface with RevMap but is backed by a sqlite database. It uses database indexes to accelerate all kinds of queries and disables iteration to prevent slow code being written in the future. In practise, it should be faster on large repos with millions of svn revisions but slower on small repos due to the overhead introduced.

#!/bin/sh
mkdir temp || exit 1
cd temp
svnadmin create repo
svn co file://`pwd`/repo wc
pushd wc
mkdir -p project/trunk
svn add project
svn ci -m 'trunk'
cd project/trunk
echo a > a
mkdir narf
svn add a narf
svn ci -m 'file and empty dir'
popd
svnadmin dump repo > ../empty_dir_in_trunk_not_repo_root.svndump
echo 'dump in empty_dir_in_trunk_not_repo_root.svndump'
echo 'you can probably delete temp now'