#!/bin/sh

if [ -z "$1" ]
then	echo Hivas: `basename $0` keplet
	echo A keplet alakja pl. C15H17NO3S vagy 'C=15|H=17|N=1|O=3|S=1'
	exit 1
fi

echo $1 | sed \
	-e 's/[=|]//g'	\
	-e '/[^0-9]1$/s/1$//' \
	-e 's/\([A-Za-z]\)1\([A-Z]\)/\1\2/g' \
	-e 's/\([A-Za-z]\)\([1-9]\)/\1<sub>\2/g' \
	-e 's@\([0-9]\)\([A-Z]\)@\1</sub>\2@g' \
	-e 's@\([0-9]\)$@\1</sub>@'
