Checkout a branch, update gems, run migrations, and prune merged branches

remaster.sh

#!/bin/sh

BRANCH="master"
ROOT=`git rev-parse --show-toplevel`

[[ 0 < $# ]] && BRANCH=$1

[[ `git status -b -s --porcelain | egrep '^\#\# ($BRANCH)'` ]] ||  git checkout ${BRANCH} && {
  (git pull origin ${BRANCH} || git pull --rebase origin ${branch} ) &&
  git fetch -a &&
  git branch --merged | grep --color -v "\*" | xargs -n 1 git branch -d &&
  git remote prune origin && {
    echo "Clearing logs…   \c"
    for LOGFILE in `find ${ROOT}/log -name "*.log"`; do
      cat /dev/null > ${LOGFILE}
    done
    echo "done."
  } &&
  [[ -e ${ROOT}/Gemfile ]] &&
  [[ -x `command -v bundle` ]] && {
    echo "Checking gems…"

    bundle check || bundle
    echo "Done checking gems"
  }
  [[ -e ${ROOT}/Rakefile ]] && {
    if [ `bundle exec rake db:migrate:status | egrep "^(\s)*down" | wc -l` -gt 0 ]
    then
      echo "Running migrations…"
      bundle exec rake db:migrate
      bundle exec rake db:migrate RAILS_ENV=test
    fi
    echo "Migrations are up to date."
  }
}