#! /bin/sh

rm -rf mozvoikko
rm -f targets.tmp
mkdir mozvoikko || exit 1

version=

# Merges contents of incoming mozvoikko XPI packages (duplicate
# files are overwritten without asking). Extracts em:targetPlatform
# elements into a separate temporary file. 
for file in in/mozvoikko-*.xpi; do
    if ! ( cd mozvoikko && unzip -oq ../$file ); then
	echo "Failed to upzip $file"
	exit 1
    fi
    
    dos2unix -q mozvoikko/install.rdf
    
    currver=$(grep '<em:version>' mozvoikko/install.rdf |\
	sed -e 's#[ 	]*<em:version>\(.*\)</em:version>[ 	]*$#\1#')

    if test "$currver" != "$version"; then
	if test "$version" != ""; then
	    echo "Mixed versions"
	    exit 1
	fi
	version=$currver
    fi

    grep '<em:targetPlatform>' mozvoikko/install.rdf >>targets.tmp
done

# It is assumed for simplicity that install.rdf of source XPI packages contains exactly one
# line with specified em:targetPlatform XML element. This condition is not verified.
cat mozvoikko/install.rdf | awk 'BEGIN{on=1} /<em:targetPlatform>/{on=0} {if (on) {print}}' >install.rdf
cat targets.tmp >>install.rdf
rm -f targets.tmp
cat mozvoikko/install.rdf | awk 'BEGIN{on=0} {if (on) {print}} /<em:targetPlatform>/{on=1}' >>install.rdf

# Verify whether one can parse generated install.rdf file
if ! xmllint --noout install.rdf ; then
    echo "Failed to parse generated RDF file"
    exit 1
fi

# Generate merged XPI package.
mv -f install.rdf mozvoikko/install.rdf
rm -f mozvoikko-$version.xpi
if ! ( cd mozvoikko && find . -type f | sed -e 's:^\./::' | zip -9@ ../mozvoikko-$version.xpi ) ; then
    echo "Failed to create merged XPI package"
fi