# ---------------------------------------------------------------------------
# custom tab completion ....
# 
# cheatsheet...
#	COMP_LINE
#	COMP_POINT
#	COMP_WORDS
#	COMP_CWORD
#	$1 - command completed
#	$2 - word being completed
#	$3 - word before the one being completed
#	COMPREPLY - result


# if bk is installed then build completion for bk commands
if ( bk version > /dev/null 2>&1 ) ; then
  BKCMDS="`bk help topics |grep '^  bk' |cut -d ' ' -f 4 |xargs echo`"
  complete -A file -W "$BKCMDS" bk
fi

# create a function that allows for man page completion
complete -o default -F _complete_man_pages man
_complete_man_pages() {
  if test -z "$2" ; then
    return
  fi
  if test -z "$3" || test "$1" = "$3" ; then
    COMPREPLY=( $( apropos "$2" | cut -d ' ' -f 1 | grep "^$2" ) )
  else
    COMPREPLY=( $( apropos "$3" "$2" | cut -d ' ' -f 1 | grep "^$2" ) )
  fi
}

# create a function that handles tab completion on ssh
complete -o default -F _complete_ssh_hosts ssh
complete -o default -F _complete_ssh_hosts scp
_complete_ssh_hosts() {
  if test -z "$2" ; then
    return
  fi
  KNOWN_HOSTS=".ssh/known_hosts"
  KNOWN_HOSTS2=".ssh/known_hosts2"
  if ! test -r "$KNOWN_HOSTS" -o -r "$KNOWN_HOSTS2" ; then
    return
  fi
  PREFIX=""
  SSHHOST=$( echo "$2" | cut -d '@' -f 2- )
  if test "$SSHHOST" != "$2" ; then
    PREFIX=$( echo "$2" | cut -d '@' -f 1 )"@"
  fi
  COMPREPLY=( $( cat "$KNOWN_HOSTS" "$KNOWN_HOSTS2" | cut -d ' ' -f 1 \
		| tr ',' '\n' | grep "^$SSHHOST" | sed -e "s/^/$PREFIX/;" ) )
}

# create a function that handles tab completion on make
complete -o default -F _complete_make_targets make
_complete_make_targets() {
  if test -z "$2" ; then
    return
  fi
  DIR="."
  if (echo $COMP_LINE | grep 'make .*-C *[^ ]\+ ' > /dev/null) ; then
    DIR=$(echo $COMP_LINE | sed -e 's/^.*-C *//;' | cut -d ' ' -f 1)
  fi
  FILE=""
  if (echo $COMP_LINE | grep 'make .*-f *[^ ]\+ ' > /dev/null) ; then
    FILE=$(echo $COMP_LINE | sed -e 's/^.*-f *//;' | cut -d ' ' -f 1)
  fi
  FILE=$(for try in "$FILE" "GNUmakefile" "makefile" "Makefile" ; do
	  if test -f "$DIR/$try" -a -r "$DIR/$try" ; then
	    echo "$DIR/$try"
          fi
	done | head -n1)
  if ! test -f "$FILE" -a -r "$FILE" ; then
    return
  fi
  COMPREPLY=( $( cat "$FILE" | grep -i "^$2[a-z0-9_]*:" | cut -d : -f 1  ) )
}

fi # end of interactive stuff

# EOF