diff options
| -rwxr-xr-x | contrib/wget-xdelta.sh | 111 |
1 files changed, 67 insertions, 44 deletions
diff --git a/contrib/wget-xdelta.sh b/contrib/wget-xdelta.sh index d99dd3cc..4656f4dd 100755 --- a/contrib/wget-xdelta.sh +++ b/contrib/wget-xdelta.sh @@ -1,47 +1,70 @@ #!/bin/bash -o=$(basename $1) -u=$2 -CARCH="i686" # Hmmm where to get this from? /etc/makepkg.conf? -cached_file="" -# Only check for pkg.tar.gz files in the cache, we download db.tar.gz as well -if [[ "$o" =~ "pkg.tar.gz" ]] # if $o contains pkg.tar.gz -then - pkgname=${o%-*-[0-9]-${CARCH}.pkg.tar.gz.part} # Parse out the package name - newend=${o##$pkgname-} # Parse out everything following pkgname - new_version=${newend%-${CARCH}.pkg.tar.gz.part} # Strip off .pkg.tar.gz.part leaving version - url=${u%/*} - for cached_file in $(ls -r /var/cache/pacman/pkg/${pkgname}-*-${CARCH}.pkg.tar.gz 2>/dev/null); do - # just take the first one, by name. I suppose we could take the latest by date... - oldend=${cached_file##*/$pkgname-} - old_version=${oldend%-${CARCH}.pkg.tar.gz} - if [ "$old_version" = "$new_version" ]; then - # We already have the new version in the cache! Just continue the download. - cached_file="" - fi - break - done -fi -if [ "$cached_file" != "" ]; then - # Great, we have a cached file, now calculate a patch name from it - delta_name=$pkgname-${old_version}_to_${new_version}-${CARCH}.delta - # try to download the delta - if wget --passive-ftp -c $url/$delta_name; then - # Now apply the delta to the cached file to produce the new file - echo Applying delta... - if xdelta patch $delta_name $cached_file $o; then - # Remove the delta now that we are finished with it - rm $delta_name - else - # Hmmm. xdelta failed for some reason - rm $delta_name - # just download the file - wget --passive-ftp -c -O $o $u - fi - else - # just download the file - wget --passive-ftp -c -O $o $u - fi + +if [ -r "/etc/makepkg.conf" ]; then + source /etc/makepkg.conf else - # just download the file - wget --passive-ftp -c -O $o $u + echo "wget-xdelta: Unable to find makepkg.conf" + exit 1 +fi + +if [ -r ~/.makepkg.conf ]; then + source ~/.makepkg.conf +fi + +out_file=$(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: |