diff options
Diffstat (limited to 'scripts/makepkg.in')
| -rw-r--r-- | scripts/makepkg.in | 47 |
1 files changed, 47 insertions, 0 deletions
diff --git a/scripts/makepkg.in b/scripts/makepkg.in index 00e7b443..8c573461 100644 --- a/scripts/makepkg.in +++ b/scripts/makepkg.in @@ -594,6 +594,53 @@ create_package() { error "$(gettext "Failed to create package file.")" exit 1 # TODO: error code fi + + create_xdelta "$pkg_file" +} + +create_xdelta() { + if [ "$(check_buildenv xdelta)" != "y" ]; then + return + fi + + # Check to see if we have any old versions to create deltas with + local pkg_file=$1 + local base_file="" + local delta_file="" + local cache_dir="/var/cache/pacman/pkg" + local latest_version="" + local old_versions=( $(ls ${cache_dir}/${pkgname}-*-${CARCH}.${PKGEXT} 2>/dev/null; ls ${PKGDEST}/${pkgname}-*-${CARCH}.${PKGEXT} 2>/dev/null) ) + + local old_file dirname filename namend old_version + for old_file in "${old_versions[@]}"; do + dirname=$(dirname $old_file) + filename=$(basename $old_file) + namend=${filename#"$pkgname-"} + old_version=${namend%-"${CARCH}.${PKGEXT}"} + + # old_version may include the target package, only use the old versions + if [ "$old_version" != "$pkgver-$pkgrel" ] && [[ "$old_version" > "$latest_version" ]]; then + latest_version=$old_version + base_file=$old_file + delta_file=$PKGDEST/$pkgname-${old_version}_to_$pkgver-$pkgrel-${CARCH}.delta + fi + done + + if [ "$delta_file" != "" ]; then + msg "Making delta from version $latest_version" + # xdelta will decompress base_file & pkg_file into TMP_DIR (or /tmp if TMP_DIR is unset) + # then perform the delta on the resulting tars + xdelta delta $base_file $pkg_file $delta_file + # Generate the final gz using xdelta for compression. xdelta will be our common + # denominator compression utility between the packager and the users + # + # makepkg and pacman must use the same compression algorithm or the delta generated + # package may not match, producing md5 checksum errors. + # + xdelta patch $delta_file $base_file $pkg_file + else + msg "No previous version found, skipping xdelta" + fi } create_srcpackage() { |