#!/usr/bin/env bash

# Source a .rvmrc file in a directory after changing to it, if it exists.
# To disable this fature, set export rvm_project_rvmrc=0 in $HOME/.rvmrc
if [[ ${rvm_project_rvmrc:-1} -ne 0 ]] ; then

  if [[ -n "${ZSH_VERSION:-""}" ]] ; then

    autoload is-at-least

    if is-at-least 4.3.4 >/dev/null 2>&1; then

      # On zsh, use chpwd_functions
      chpwd_functions=( "${chpwd_functions[@]}" __rvm_project_rvmrc )

    else

      cd()
      {
        builtin cd "$@"

        local result=$?

        __rvm_project_rvmrc

        rvm_hook="after_cd" ; source "$rvm_path/scripts/hook"

        return $result
      }

    fi

  else

    cd()
    {
      builtin cd "$@"

      local result=$?

      __rvm_project_rvmrc

      rvm_hook="after_cd" ; source "$rvm_path/scripts/hook"

      return $result
    }

    # This functionality is opt-in by setting rvm_cd_complete_flag=1 in ~/.rvmrc
    # Generic bash cd completion seems to work great for most, so this is only
    # for those that have some issues with that.
    if [[ ${rvm_cd_complete_flag} = 1 ]] ; then

      # If $CDPATH is set, bash should tab-complete based on directories in those paths,
      # but with the cd function above, the built-in tab-complete ignores $CDPATH. This
      # function returns that functionality.
      _rvm_cd_complete ()
      {
        local directory current matches item index sep
        sep="${IFS}"
        declare -x IFS=$'\n'
        COMPREPLY=()
        current="${COMP_WORDS[COMP_CWORD]}"
        if [[ -n "$CDPATH" && ${current:0:1} != "/" ]] ; then
          index=0
          # The change to IFS above means that the tr below should replace ':'
          # with a newline rather than a space. A space would be ignored, breaking
          # TAB completion based on CDPATH again
          for directory in $(printf "%s" "$CDPATH" | tr -s ':' '\n') ; do
            for item in $( compgen -d "$directory/$current" ) ; do
              COMPREPLY[index++]=${item#$directory/}
            done
          done
        else
          COMPREPLY=( $(compgen -d ${current}) )
        fi
        declare -x IFS="${sep}";
      }

      complete -o bashdefault -o default -o filenames -o dirnames -o nospace -F _rvm_cd_complete cd

    fi

  fi

fi