index : pacman | |
Archlinux32 fork of pacman | gitolite user |
summaryrefslogtreecommitdiff |
author | Nezmer <git@nezmer.info> | 2010-10-12 00:20:57 +0300 |
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committer | Dan McGee <dan@archlinux.org> | 2010-10-11 20:29:22 -0500 |
commit | bce3c8efc7a2d187984aa0e7037307b99c217fd7 (patch) | |
tree | 8eb9ead2af2a61ad0764b08e804d8471b975ce01 /contrib/wget-xdelta.sh.in | |
parent | 7d937772313a796f4c0bff76bf1bd7d78f8ccb5a (diff) |
-rwxr-xr-x | contrib/wget-xdelta.sh.in | 70 |
diff --git a/contrib/wget-xdelta.sh.in b/contrib/wget-xdelta.sh.in new file mode 100755 index 00000000..4656f4dd --- /dev/null +++ b/contrib/wget-xdelta.sh.in @@ -0,0 +1,70 @@ +#!/bin/bash + +if [ -r "/etc/makepkg.conf" ]; then + source /etc/makepkg.conf +else + echo "wget-xdelta: Unable to find makepkg.conf" + exit 1 +fi + +if [ -r ~/.makepkg.conf ]; then + source ~/.makepkg.conf +fi + +out_file=$(basename $1) +file_url=$2 + +if ! [[ "$out_file" =~ "pkg.tar.gz" ]]; then + # If it's not a package file download as normal and exit. + #wget --passive-ftp -c -O "$out_file" "$file_url" + exit $? +fi + + +# Get the package name and version +[[ "$out_file" =~ "$CARCH" ]] && arch="-$CARCH" || arch="" +pkg_data=$(echo $out_file | \ + sed "s|^\(.*\)-\([[:alnum:]_\.]*-[[:alnum:]_\.]*\)${arch}${PKGEXT}.part|\1 \2|") +pkgname=$(echo $pkg_data | cut -d ' ' -f 1) +new_version=$(echo $pkg_data | cut -d ' ' -f 2) +base_url=${file_url%/*} + +# Look for the last version +for file in $(ls -r /var/cache/pacman/pkg/${pkgname}-*-*{,-$CARCH}$PKGEXT 2>/dev/null); do + [[ "$file" =~ "$CARCH" ]] && arch="-$CARCH" || arch="" + check_version=$(echo $file | \ + sed "s|^.*/${pkgname}-\([[:alnum:]_\.]*-[[:alnum:]_\.]*\)${arch}$PKGEXT$|\1|" | \ + grep -v "^/var/cache/pacman/pkg") + + [ "$check_version" = "" ] && continue + + vercmp=$(vercmp "$check_version" "$old_version") + if [ "$check_version" != "$new_version" -a $vercmp -gt 0 ]; then + old_version=$check_version + old_file=$file + fi +done + +if [ "$old_version" != "" -a "$old_version" != "$new_version" ]; then + # Great, we have a cached file, now calculate a patch name from it + delta_name="$pkgname-${old_version}_to_${new_version}-${CARCH}.delta" + + echo "wget-xdelta: Attempting to download delta $delta_name..." >&2 + if wget --passive-ftp -c "$base_url/$delta_name"; then + echo "wget-xdelta: Applying delta..." + if xdelta patch "$delta_name" "$old_file" "$out_file"; then + echo "wget-xdelta: Delta applied successfully!" + rm "$delta_name" + exit 0 + else + echo "wget-xdelta: Failed to apply delta!" + rm $delta_name + fi + fi + fi + +echo "wget-xdelta: Downloading new package..." +wget --passive-ftp -c -O "$out_file" "$file_url" +exit $? + +# vim:set ts=4 sw=4 noet: |