unixorn/git-extra-commands

#!/usr/bin/env bash
#
# Checkout default branch. Not all repos use main or master, after all.
#
# Copyright 2021, Joe Block <jpb@unixorn.net>

set -o pipefail
if [[ -n "$DEBUG" ]]; then
  set -x
fi

function debug() {
  if [[ -n "$DEBUG" ]]; then
    echo "$@"
  fi
}

function fail() {
  printf '%s\n' "$1" >&2  ## Send message to stderr. Exclude >&2 if you don't want it that way.
  exit "${2-1}"  ## Return a code specified by $2 or 1 by default.
}

function has() {
  # Check if a command is in $PATH
  which "$@" > /dev/null 2>&1
}

if has git; then
  exec git checkout "$(git origin-head)"
else
  fail "git is not in $PATH"
fi