How to add tags/trunk/branches to established SVN repo?

Lets say you have an established SVN repository with many hundreds of revisions and has been around for upwards of a year. The repository does not have the standard tags, trunk and branches at the top level. Instead it just goes straight into the code.

Is there a way to add in tags, trunk and branches to the repository on the top level without开发者_开发技巧 just checking out the entire repository, altering the directory structure and then committing? Is there anyway to add it in recursively so that if you wanted to view a file from a year ago that used to be here:

svn://svn.server.com/myfolder/myfile.txt

instead you would see it here

svn://svn.server.com/trunk/myfolder/myfile.txt

Is this possible? Or do I just have to check everything out, alter the dir structure at the top and commit the whole thing?

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You don't need to check out the repo to manipulate it.

svn mv svn://svn.server.com/myfolder svn://svn.server.com/trunk
svn mkdir svn://svn.server.com/tags svn://svn.server.com/branches

If immediate commits are scary, you might also be interested in svn checkout --depth='immediates' which will checkout only the files and folders in the target directory--not the contents of the folders. Check out the root with --depth=immediates, arrange directory structure as desired, commit.

There isn't a good way to accomplish the recursive change short of rewriting the entire repo's history.

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I believe the only way to do this recursively would to use svnadmin dump, alter the dump file, then import to a clean repo.