contrib/push-update.sh

   1 #!/bin/sh
   2 #
   3 # Automatically update working copy of target repository when pushing
   4 # Copyright (c) Petr Baudis, 2006
   5 #
   6 # Sometimes you might want to push to a repository with a working copy
   7 # attached. That is certainly possible and if you push into a branch that
   8 # is not checked out at the remote side (e.g. if you push into 'origin'
   9 # in the standard setup created by `cg-clone` when you have 'master' checked
  10 # out and 'origin' represents the remote repository), it works just fine.
  11 #
  12 # HOWEVER, if you push to the same branch as your current branch (usually
  13 # 'master'), you will get into very big problems since Cogito will think your
  14 # working copy suddenly corresponds to the pushed revision, however the
  15 # working copy was not updated yet and still represents the original revision.
  16 # If you run e.g. `cg-diff` then, you will get very funny results. This hook
  17 # script can be used to update your remote working copy every time you push.
  18 #
  19 # Note that you should be careful while deploying this, it can get very
  20 # confusing especially if someone else pushes to your working repository
  21 # in the middle of your work. If you work in a team, you should either
  22 # use a central repository set up using `cg-admin-setuprepo` or fetch from
  23 # each other, not push into someone else's repository.
  24 #
  25 # Also, it is inherently racy and you can end up in an inconsistent state
  26 # in case things go bad enough.
  27 #
  28 # This is designed to run as Git update hook. Add this to your
  29 # '.git/hooks/update':
  30 #
  31 #       /path/to/push-update.sh "$@"
  32 #
  33 # and do not forget to make the hook executable.
  34
  35 # It is totally untested, in case you care. :P
  36
  37 cd ..
  38 if [ "$(git-symbolic-ref HEAD)" == "$1" ]; then
  39         _cg_orig_head="$2" cg-merge "$3"
  40 fi