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contrib/wget-xdelta.sh: Replaced with an improved version.

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Signed-off-by: Andrew Fyfe <andrew@neptune-one.net>
This commit is contained in:
Andrew Fyfe 2007-06-03 19:14:14 +01:00 committed by Dan McGee
parent b757cc9414
commit a78ad0d38d
1 changed files with 67 additions and 44 deletions
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101
contrib/wget-xdelta.sh
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@ -1,47 +1,70 @@
#!/bin/bash #!/bin/bash
o=$(basename $1)
u=$2 if [ -r "/etc/makepkg.conf" ]; then
CARCH="i686" # Hmmm where to get this from? /etc/makepkg.conf? source /etc/makepkg.conf
cached_file="" else
# Only check for pkg.tar.gz files in the cache, we download db.tar.gz as well echo "wget-xdelta: Unable to find makepkg.conf"
if [[ "$o" =~ "pkg.tar.gz" ]] # if $o contains pkg.tar.gz exit 1
then fi
pkgname=${o%-*-[0-9]-${CARCH}.pkg.tar.gz.part} # Parse out the package name
newend=${o##$pkgname-} # Parse out everything following pkgname if [ -r ~/.makepkg.conf ]; then
new_version=${newend%-${CARCH}.pkg.tar.gz.part} # Strip off .pkg.tar.gz.part leaving version source ~/.makepkg.conf
url=${u%/*} fi
for cached_file in $(ls -r /var/cache/pacman/pkg/${pkgname}-*-${CARCH}.pkg.tar.gz 2>/dev/null); do
# just take the first one, by name. I suppose we could take the latest by date... out_file=$(basename $1)
oldend=${cached_file##*/$pkgname-} file_url=$2
old_version=${oldend%-${CARCH}.pkg.tar.gz}
if [ "$old_version" = "$new_version" ]; then if ! [[ "$out_file" =~ "pkg.tar.gz" ]]; then
# We already have the new version in the cache! Just continue the download. # If it's not a package file download as normal and exit.
cached_file="" #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=$file
fi fi
break
done done
fi
if [ "$cached_file" != "" ]; then if [ "$old_version" != "" -a "$old_version" != "$new_version" ]; then
# Great, we have a cached file, now calculate a patch name from it # Great, we have a cached file, now calculate a patch name from it
delta_name=$pkgname-${old_version}_to_${new_version}-${CARCH}.delta delta_name="$pkgname-${old_version}_to_${new_version}-${CARCH}.delta"
# try to download the delta
if wget --passive-ftp -c $url/$delta_name; then echo "wget-xdelta: Attempting to download delta $delta_name..." >&2
# Now apply the delta to the cached file to produce the new file if wget --passive-ftp -c "$base_url/$delta_name"; then
echo Applying delta... echo "wget-xdelta: Applying delta..."
if xdelta patch $delta_name $cached_file $o; then if xdelta patch "$delta_name" "$old_file" "$out_file"; then
# Remove the delta now that we are finished with it echo "wget-xdelta: Delta applied successfully!"
rm "$delta_name"
exit 0
else
echo "wget-xdelta: Failed to apply delta!"
rm $delta_name 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 fi
else
# just download the file
wget --passive-ftp -c -O $o $u
fi fi
else
# just download the file
wget --passive-ftp -c -O $o $u
fi fi
echo "wget-xdelta: Downloading new package..."
wget --passive-ftp -c -O "$out_file" "$file_url"
exit $?
# vim:set ts=4 sw=4 noet: