rum

#!/bin/sh

# rum, r_ebase onto u_pdated m_ain
#
# Usage: rum
#
# globals expected in ${HOME}/.ports.conf with sample values
# No leading '/' on directory names means they are relative to $HOME
# portsd='/usr/ports'           # ports directory

. "$HOME/.ports.conf"

usage () {
  cat <<EOF 1>&2
Usage: ${0##*/}
EOF
}

############################################ main

[ $# != 0 ] && { usage; exit 1; }

[ -n "${portsd##/*}" ] && portsd="${HOME}/$portsd"

# current branch
cb="$(git -C "$portsd" symbolic-ref --short HEAD)"

if [ -z "$cb" ]; then
  printf "Could not determine the checked out git branch.\\n"
  exit 1
elif [ "$cb" = "main" ]; then
  printf "The main branch is checked out.\\n"
  exit 1
fi

git -C "$portsd" checkout main && \
  pull && \
  git -C "$portsd" checkout "$cb" && \
  git rebase main