elixir_completion

#  -*- shell-script -*-

_complete_elixir_iex()
{
  local cur prev opts name completion_file
  COMPREPLY=()
  cur="${COMP_WORDS[COMP_CWORD]}"
  prev="${COMP_WORDS[COMP_CWORD-1]}"
  name=$1
  completion_file="/tmp/.elixir_completion/${name}"

  if [[ ! -f $completion_file ]]; then
    opts=$(for i in `${name} --help  2>&1 >/dev/null | grep -e '^ *-' | awk '{ print $1 }'`; do echo $i; done)
    mkdir -p /tmp/.elixir_completion
    echo $opts > $completion_file
  else
    opts=$(cat $completion_file)
  fi

  if [[ ${prev} == $name ]] ; then
    COMPREPLY=( $(compgen -W "${opts} --help" -- ${cur}) )
    return 0
  fi
}

_complete_mix()
{
  local cur prev opts mix_file completion_file dir_hash
  COMPREPLY=()
  cur="${COMP_WORDS[COMP_CWORD]}"
  prev="${COMP_WORDS[COMP_CWORD-1]}" 
  mix_file="./mix.exs"

  if [[ -f $mix_file ]]; then
    dir_hash="$(pwd | sha256sum | head -c 64)"
  else
    dir_hash="global"
  fi

  completion_file="/tmp/.elixir_completion/mix_${dir_hash}"

  if [[ ! -f $completion_file ]] || [[ $mix_file -nt $completion_file ]]; then
    opts=$(for i in `mix help | grep -ve "current:" | grep -ve "iex" | awk '{ print $2" " }'`; do echo $i; done)
    mkdir -p /tmp/.elixir_completion
    echo $opts > $completion_file
  else
    opts=$(cat $completion_file)
  fi

  if [[ ${prev} == mix ]] ; then
    COMPREPLY=( $(compgen -W "${opts}" -- ${cur}) )
    return 0
  fi
}

complete -f -F _complete_elixir_iex elixir iex
complete -F _complete_mix mix