Git hook to update local username and email.

post-checkout

#!/bin/bash

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

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)"

if [[ ! -f ~/.git-clone-init ]]; then
cat << INPUT > ~/.git-clone-init
#!/bin/bash
case "\$url" in
  *@github.com:*    ) email=""; name="";;
  *//github.com/*   ) email=""; name="";;
esac
INPUT
  warn "\nMissing file ~/.git-clone-init. Template created..."
  exit 0
fi
. ~/.git-clone-init

if [[ -z $name || -z $email ]]; then
  warn "Failed to detect identity using ~/.git-clone-init."
  exit 0
fi

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

echo -e "\nIdentity set to $name <$email>"