#! /bin/sh

# Forget portability - this is a script for maintainers only.
# In fact, it's only known to run on RedHat Linux 7.1.
# HTML files are included with the distribution, so it's not a big deal.

# Adjustable parts.
: ${DSL=/usr/share/sgml/docbook/utils-0.6/docbook-utils.dsl}
: ${JADEFLAGS=}

# Exit on errors.
set -e

# Big fat warning in case we need it.
WARNING='

Could not generate GMC documentation.
Due to installations of DocBook being very different across platforms
and distributions, this "mkhtml" script has been designed to run on
RedHat Linux 7.1 only. You may want to adapt it to your system if you
have DocBook 4.1 installed.

Please DO NOT make official releases of GNU Midnight Commander on the
systems where the GMC documentation fails to be generated.

'

# What to remove in case of failure
CLEANFILES="*.html genindex.sgml HTML.index"
rm -f $CLEANFILES

# Trap if something goes wrong
for signal in 0 1 2 13 15; do
  trap 'status=$?
	set +e
	trap 0
	test $status = 0 || { echo "$WARNING"; rm -f $CLEANFILES; }
	exit $status' $signal
done

# Complicated bootstrap process - create empty genindex.sgml first,
# then generate it and then generate html files again.
echo >genindex.sgml

# First pass
echo "First pass"
jade $JADEFLAGS -t sgml -i html -d "$DSL#html" -V html-index=1 gmc.sgml

# collateindex.pl may not have /usr/bin/perl on the first line.
echo "Generating index"
perl /usr/bin/collateindex.pl HTML.index >genindex.sgml
rm -f HTML.index

# Second pass with the right genindex.sgml
echo "Second pass"
jade $JADEFLAGS -t sgml -i html -d "$DSL#html" gmc.sgml