#!/usr/bin/env sh
assert_tools () {
	while test $# -gt 0; do
		which $1  >/dev/null 2>/dev/null || {
			echo "tool missing: "$1
			exit 2
		}
		shift
	done
}
test $# -eq 0 && {
	dependencies="xsltproc"
	assert_tools ${dependencies}
	xsltproc --encoding utf-8 -o ds-feed.xml rss.xsl data.xml
	xsltproc --encoding iso-8859-1 -o download.html download.xsl data.xml
	xsltproc --encoding utf-8 -o index.html index.xsl data.xml
	exit 0
}
test "$1" = "sort" && {
	dependencies="xsltproc"
	assert_tools ${dependencies}
	xsltproc --encoding utf-8 -o sorted.xml sort.xsl data.xml
	mv -i sorted.xml data.xml
}
mirror_website () {
	dependencies="wget"
	assert_tools ${dependencies}
	local url=$@
	local domain=`expr "$url" : '^http[s]*://\([^/?]*\)'`
	wget \
		--recursive \
		--no-clobber \
		--page-requisites \
		--html-extension \
		--convert-links \
		--restrict-file-names=windows \
		--domains $domain \
		--no-parent \
		$url 
}
# a mirror is useful for local testing with files
test "$1" = "mirror" && {
	echo "downloading the website may take quite some time."
	mirror_website http://ds.ccc.de/
	
}
#gs -sDEVICE=pdfwrite -dPDFSETTINGS=/ebook -q -o ds100-smaller.pdf ds100.pdf