configurable compression for testcases

Compressing files in 4 different styles eats test-time for no practical
gain if we don't test them explicitly, so default to just building 'gz'
compressed files as it is the simplest compression algorithm supported

Git-Dch: Ignore

test/integration/framework

@@ -194,6 +194,7 @@ setupenvironment() {
 	echo 'quiet::NoUpdate "true";' >> aptconfig.conf
 	export LC_ALL=C
 	export PATH="${PATH}:/usr/local/sbin:/usr/sbin:/sbin"
+	configcompression '.' 'gz' #'bz2' 'lzma' 'xz'
 	msgdone "info"
 }
 
@@ -257,6 +258,20 @@ configdpkg() {
 	fi
 }
 
+configcompression() {
+	while [ -n "$1" ]; do
+		case "$1" in
+		'.') echo ".\t.\tcat";;
+		'gz') echo "gzip\tgz\tgzip";;
+		'bz2') echo "bzip2\tbz2\tbzip2";;
+		'lzma') echo "lzma\tlzma\txz --format=lzma";;
+		'xz') echo "xz\txz\txz";;
+		*) echo "$1\t$1\t$1";;
+		esac
+		shift
+	done > ${TMPWORKINGDIRECTORY}/rootdir/etc/testcase-compressor.conf
+}
+
 setupsimplenativepackage() {
 	local NAME="$1"
 	local ARCH="$2"
@@ -427,6 +442,8 @@ buildaptarchive() {
 }
 
 createaptftparchiveconfig() {
+	local COMPRESSORS="$(cut -d'	' -f 1 ${TMPWORKINGDIRECTORY}/rootdir/etc/testcase-compressor.conf | tr '\n' ' ')"
+	COMPRESSORS="${COMPRESSORS%* }"
 	local ARCHS="$(find pool/ -name '*.deb' | grep -oE '_[a-z0-9-]+\.deb$' | sort | uniq | sed -e '/^_all.deb$/ d' -e 's#^_\([a-z0-9-]*\)\.deb$#\1#' | tr '\n' ' ')"
 	if [ -z "$ARCHS" ]; then
 		# the pool is empty, so we will operate on faked packages - let us use the configured archs
@@ -444,10 +461,10 @@ createaptftparchiveconfig() {
 	echo -n '";
 };
 Default {
-	Packages::Compress ". gzip bzip2 lzma xz";
-	Sources::Compress ". gzip bzip2 lzma xz";
-	Contents::Compress ". gzip bzip2 lzma xz";
-	Translation::Compress ". gzip bzip2 lzma xz";
+	Packages::Compress "'"$COMPRESSORS"'";
+	Sources::Compress "'"$COMPRESSORS"'";
+	Contents::Compress "'"$COMPRESSORS"'";
+	Translation::Compress "'"$COMPRESSORS"'";
 	LongDescription "false";
 };
 TreeDefault {
@@ -617,18 +634,27 @@ buildaptarchivefromfiles() {
 	msginfo "Build APT archive for ${CCMD}$(basename $0)${CINFO} based on prebuild files…"
 	find aptarchive -name 'Packages' -o -name 'Sources' | while read line; do
 		msgninfo "\t${line} file… "
-		cat ${line} | gzip > ${line}.gz
-		cat ${line} | bzip2 > ${line}.bz2
-		cat ${line} | xz --format=lzma > ${line}.lzma
-		cat ${line} | xz > ${line}.xz
-		if [ -n "$1" ]; then
-			touch -d "$1" ${line}.gz ${line}.bz2 ${line}.lzma ${line}.xz
-		fi
+		compressfile "$line" "$1"
 		msgdone "info"
 	done
 	generatereleasefiles "$@"
 }
 
+compressfile() {
+	cat ${TMPWORKINGDIRECTORY}/rootdir/etc/testcase-compressor.conf | while read compressor extension command; do
+		if [ "$compressor" = '.' ]; then
+			if [ -n "$2" ]; then
+				touch -d "$2" "$1"
+			fi
+			continue
+		fi
+		cat "$1" | $command > "${1}.${extension}"
+		if [ -n "$2" ]; then
+			touch -d "$2" "${1}.${extension}"
+		fi
+	done
+}
+
 # can be overridden by testcases for their pleasure
 getcodenamefromsuite() { echo -n "$1"; }
 getreleaseversionfromsuite() { true; }

test/integration/test-apt-cdrom

@@ -18,10 +18,7 @@ echo 'Description-de: automatisch generiertes Testpaket testing=0.8.15/stable
  Diese Pakete sind nur für das testen von APT gedacht,
  sie erfüllen keinen Zweck auf einem normalen System…
 ' >> Translation-de
-cat Translation-de | gzip > Translation-de.gz
-cat Translation-de | bzip2 > Translation-de.bz2
-cat Translation-de | xz --format=lzma > Translation-de.lzma
-cat Translation-de | xz > Translation-de.xz
+compressfile Translation-de
 rm Translation-en Translation-de
 cd - > /dev/null
 addtrap 'prefix' "chmod -R +w $PWD/rootdir/media/cdrom/dists/;"

test/integration/test-hashsum-verification

@@ -21,9 +21,7 @@ prepare() {
 	done
 	cp $1 aptarchive/Packages
 	find aptarchive -name 'Release' -delete
-	cat aptarchive/Packages | gzip > aptarchive/Packages.gz
-	cat aptarchive/Packages | bzip2 > aptarchive/Packages.bz2
-	cat aptarchive/Packages | xz --format=lzma > aptarchive/Packages.lzma
+	compressfile aptarchive/Packages
         # create Release file with incorret checksums
 	cat > aptarchive/Release <<EOF
 Date: Fri, 05 Aug 2011 09:22:08 UTC

test/integration/test-pdiff-usage

@@ -19,9 +19,7 @@ testequal "$(cat ${PKGFILE})
 " aptcache show apt oldstuff
 
 cp ${PKGFILE}-new aptarchive/Packages
-cat aptarchive/Packages | gzip > aptarchive/Packages.gz
-cat aptarchive/Packages | bzip2 > aptarchive/Packages.bz2
-cat aptarchive/Packages | xz --format=lzma > aptarchive/Packages.lzma
+compressfile 'aptarchive/Packages'
 rm -rf aptarchive/Packages.diff
 mkdir -p aptarchive/Packages.diff
 PATCHFILE="aptarchive/Packages.diff/$(date +%Y-%m-%d-%H%M.%S)"

test/integration/test-releasefile-verification

@@ -22,9 +22,7 @@ prepare() {
 	aptget clean
 	cp $1 aptarchive/Packages
 	find aptarchive -name 'Release' -delete
-	cat aptarchive/Packages | gzip > aptarchive/Packages.gz
-	cat aptarchive/Packages | bzip2 > aptarchive/Packages.bz2
-	cat aptarchive/Packages | xz --format=lzma > aptarchive/Packages.lzma
+	compressfile 'aptarchive/Packages'
 	generatereleasefiles "$DATE"
 }