sven 0.3

It requires `pysvn` which you will probably want to install system-wide.

Basic usage:

from sven.backend import SvnAccess
client = SvnAccess(my_svn_server_repo_uri, my_local_checkout_dir)

client.write('path/to/a/file/to/write', "Lovely content to be versioning!")
client.write('path/to/another/file', "Aw shucks, I'll version this too..",
msg="My commit message", kind='text/plain')

last_rev_int = client.last_changed_rev('path/to/another/file')

last_rev_int = last_rev_int - 1
from sven.exc import ResourceUnchanged
try:
earlier_version = client.read('path/to/another/file', rev=last_rev_int)
except ResourceUnchanged, exc:
last_rev_int = exc.last_change
earlier_version = client.read('path/to/another/file', rev=last_rev_int)

changelog = client.log('path/to/another/file', rev=last_rev_int)

Each `.write` writes the content to the path on the local filesystem's checkout
and then commits it to the repository. The workflow of one-write-per-commit is
by design and is not likely to change soon; if you need a different workflow,
you probably ought to just be using svn clients directly, anyway.

Currently sven does not help you set up an svn client or server. It assumes
you've already got a repository and checkout set up.

The formats returned by some of its methods (particularly .log and .ls) are
totally ad-hoc right now and strange; they'll probably be formalized sooner
or later.


New in version 0.3:


* Removed `SvnAccess.update_after_write` knob and instead set default value of True
to the `update_after_write` argument to `SvnAccess.write`; callers can implement
alternatives trivially by subclassing.

* Added `update_before_write` argument to .write with default value of True. Turn
this off as well as `update_after_write` if you want to manage synchronicity in
exchange for potentially significant performance improvements.

* Added `default_commit_message` argument to `SvnAccess` constructor. The default
is "foom".

* Throw `exc.ResourceChanged` exceptions when a file is found to be out of date
during a write operation (which will only happen if `update_before_write` is
unset by the caller) and revert local changes if this happens, to restore the
checkout to an unconflicting state.