#!/bin/bash

 (

     export PATH=/usr/local/bin:$PATH

     REPOSITORY=http://lemon.cs.elte.hu/hg/lemon/

     WORKINGCOPY=lemon

     ROOT=$PWD

     LASTREV_FILE=$ROOT/last-rev

     LASTREV=`cat $LASTREV_FILE`

     cd $WORKINGCOPY

     hg pull

     hg update

     REV=`hg id -n`

     if [ $# -eq 0 ]; then

         if [ $LASTREV -lt $REV ]; then

             # Delete autom4te.cache in order to get configure regenerated 

             # and the new revision number propagated into it.

             rm -rf autom4te.cache

             rm -rf doc/html

             autoreconf -vi

             ./configure

             make html

             cd ..

             rm -rf latest-doc

             cp -r $WORKINGCOPY/doc/html latest-doc

             echo $REV >$LASTREV_FILE

         fi

     elif [ $1 = '--help' ]; then

         echo 'Usage:'

         echo '   make-doc --init'

         echo '   make-doc --help'

         echo '   make-doc'

         exit 1

     elif [ $1 = '--init' ]; then

         rm -rf $WORKINGCOPY

         hg clone $REPOSITORY $WORKINGCOPY

         echo '0' >$LASTREV_FILE

         exit 0

     fi

  ) >/dev/null 2>&1