#!/bin/sh

if [ "$1" = "--help" ]; then
    echo "$0: Generate the HTML version of the Debian Installer Manual"
    echo "Usage: $0 [arch] [lang] [format]"
    exit 1
fi

arch=${1:-i386}
language=${2:-en}
format=${3:-html}

## Function to check result of executed programs and exit on error
checkresult () {
    if [ ! "$1" = "0" ]; then
        exit $1
    fi
}

create_profiled () {

    dynamic="${tempdir}/dynamic.ent"

    if [ ! "$official_build" ]; then
        unofficial_build="FIXME;unofficial-build"
    else
        unofficial_build=""
    fi

    ## Now we source the profiling information for the selected architecture
    if [ ! -f arch-options/${arch} ]
    then
        echo "Unknown architecture ${arch}! Please elaborate."
        exit 1 ;
    fi
    . arch-options/${arch}

    ## Join all gathered info into one big variable
    cond="$fdisk;$network;$boot;$smp;$other;$goodies;$unofficial_build"

    ## Write dynamic non-profilable entities into the file
    echo "<!-- arch- and lang-specific non-profilable entities -->" > $dynamic
    echo "<!ENTITY langext \".${language}\">" >> $dynamic
    echo "<!ENTITY architecture \"${arch}\">" >> $dynamic
    echo "<!ENTITY kernelversion \"${kernelversion}\">" >> $dynamic
    echo "<!ENTITY altkernelversion \"${altkernelversion}\">" >> $dynamic

    sed "s/\"en/\"..\/..\/..\/${language}/" entities/docstruct.ent >> $dynamic

    sed "s/##LANG##/${language}/" templates/install.xml.template > $tempdir/install.${language}.xml

    ## Create the profiles xml file
    $xsltprocessor \
    --xinclude \
    --stringparam profile.arch "$archspec" \
    --stringparam profile.condition "$cond" \
    --output $tempdir/install.${language}.profiled.xml \
    $stylesheet_profile \
    $tempdir/install.${language}.xml

    checkresult $?

}

create_html () {

    create_profiled
    $xsltprocessor \
        --xinclude \
        --stringparam base.dir ./$destination/${language}.${arch}/html/ \
        $stylesheet_html \
        $tempdir/install.${language}.profiled.xml
    checkresult $?

}

create_dvi ()  {
    
    create_profiled
	# And use openjade to convert generate a .tex file
	export SP_ENCODING="utf-8"
	openjade -t tex \
		-b utf-8 \
		-o $tempdir/install.${language}.tex \
		-d $stylesheet_dsssl \
		-V tex-backend \
		$tempdir/install.${language}.profiled.xml

	# Next we use jadetext to generate a .dvi file
	# This needs three passes to properly generate the index (pagenumbering)
	
	cd $tempdir
	jadetex install.${language}.tex >/dev/null
	jadetex install.${language}.tex >/dev/null
	jadetex install.${language}.tex >/dev/null
	cd ..
}

create_pdf() {
    
    create_profiled
    create_dvi
    mkdir -p $destination/${language}.${arch}/pdf
    dvipdf $tempdir/install.${language}.dvi
    mv install.${language}.pdf $destination/${language}.${arch}/pdf
}

create_ps() {
    
    create_profiled
    create_dvi
    mkdir -p $destination/${language}.${arch}/ps
    dvips $tempdir/install.${language}.dvi
    mv install.${language}.ps $destination/${language}.${arch}/ps
}

stylesheet_dir="stylesheets"
stylesheet_profile="$stylesheet_dir/style-profile.xsl"
stylesheet_html="$stylesheet_dir/style-html.xsl"
stylesheet_fo="$stylesheet_dir/style-fo.xsl"
stylesheet_dsssl="$stylesheet_dir/style-print.dsl"
xml_decl="/usr/share/sgml/declaration/xml.dcl"

xsltprocessor=/usr/bin/xsltproc


if [ -z $destination ]; then
    destination="results"
fi

tempdir=${language}.temp
mkdir -p $tempdir



## Create the profiled XML file...

## Create the requested format...
case ${format} in

    html) create_html;;
    ps)   create_ps;;
    pdf)  create_pdf;;
    *) echo "Format unknown or not supported yet!";;

esac