post-checkout

#!/bin/bash

#checkout hook to locally set user name and email based on user defined patterns
#The patterns are matched against the clone url.
#
#Based on http://www.dvratil.cz/2015/12/git-trick-628-automatically-set-commit-author-based-on-repo-url/

function warn {
  echo -e "\n$1 Email and author not initialized in local config!"
}

email="$(git config --local user.email)"
name="$(git config --local user.name)"

if [[ $1 != "0000000000000000000000000000000000000000" || -n $email || -n $name ]]; then
  exit 0
fi

#get remote name:
#  only one: take it
#  more: take "origin", or fail
remote="$([[ $(git remote | wc -l) -eq 1 ]] && git remote || git remote | grep "^origin$")"

if [[ -z $remote ]]; then
  warn "Failed to detect remote."
  exit 0
fi

url="$(git config --local remote.${remote}.url)"

configpath="${XDG_CONFIG_HOME:-${HOME}/.config}/git/templates/git-clone-init"
if [[ ! -f "$configpath" ]]; then
cat << INPUT > "$configpath"
#!/bin/bash

case "\$url" in
  *@github.com:*    ) email=""; name="";;
  *//github.com/*   ) email=""; name="";;
esac
INPUT
  warn "\nMissing file $configpath. Template created..."
  exit 0
fi
. "$configpath"

if [[ -z $name || -z $email ]]; then
  warn "Failed to detect identity using $configpath."
  exit 0
fi

git config --local user.email "$email"
git config --local user.name "$name"

echo -e "\nLocal identity for ${PWD##*/} set to \"$name <$email>\""