nixpkgs/pkgs/applications/networking/browsers/chromium/update.sh
aszlig 01cbb17c12
chromium: Fix updater to handle versions > 26.
Starting with version 26, there is a chromium-$version-lite package and it is an
LZMA archive as well, so download size is reduced by about 44%.

Signed-off-by: aszlig <aszlig@redmoonstudios.org>
2013-02-08 07:03:36 +01:00

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#!/bin/sh
channels_url="http://omahaproxy.appspot.com/all?csv=1";
bucket_url="http://commondatastorage.googleapis.com/chromium-browser-official/";
output_file="$(cd "$(dirname "$0")" && pwd)/sources.nix";
nix_getattr()
{
input_file="$1";
attr="$2";
var="$(nix-instantiate --eval-only -A "$attr" "$output_file")";
echo "$var" | tr -d '\\"';
}
### poor mans key/value-store :-) ###
ver_sha_table=""; # list of version:sha256
sha_lookup()
{
version="$1";
for ver_sha in $ver_sha_table;
do
if [ "x${ver_sha%:*}" = "x$version" ];
then
echo "${ver_sha##*:}";
return 0;
fi;
done;
return 1;
}
sha_insert()
{
version="$1";
sha256="$2";
ver_sha_table="$ver_sha_table $version:$sha256";
}
if [ -e "$output_file" ];
then
get_sha256()
{
channel="$1";
version="$2";
url="$3";
oldver="$(nix_getattr "$output_file" "$channel.version")";
echo -n "Checking if $oldver ($channel) is up to date..." >&2;
if [ "x$version" != "x$oldver" ];
then
echo " no, getting sha256 for new version $version:" >&2;
sha256="$(nix-prefetch-url "$url")";
else
echo " yes, keeping old sha256." >&2;
sha256="$(nix_getattr "$output_file" "$channel.sha256")";
fi;
sha_insert "$version" "$sha256"
echo "$sha256";
}
else
get_sha256()
{
nix-prefetch-url "$url";
}
fi;
get_channel_exprs()
{
for chline in $(echo "$1" | cut -d, -f-2);
do
channel="${chline%%,*}";
version="${chline##*,}";
# XXX: Remove case after version 26 is stable:
case "${version%%.*}" in
26) url="${bucket_url%/}/chromium-$version-lite.tar.xz";;
*) url="${bucket_url%/}/chromium-$version.tar.bz2";;
esac;
echo -n "Checking if sha256 of version $version is cached..." >&2;
if sha256="$(sha_lookup "$version")";
then
echo " yes: $sha256" >&2;
else
echo " no." >&2;
sha256="$(get_sha256 "$channel" "$version" "$url")";
fi;
sha_insert "$version" "$sha256";
echo " $channel = {";
echo " version = \"$version\";";
echo " url = \"$url\";";
echo " sha256 = \"$sha256\";";
echo " };";
done;
}
cd "$(dirname "$0")";
omaha="$(curl -s "$channels_url")";
versions="$(echo "$omaha" | sed -n -e 's/^linux,\(\([^,]\+,\)\{2\}\).*$/\1/p')";
channel_exprs="$(get_channel_exprs "$versions")";
cat > "$output_file" <<-EOF
# This file is autogenerated from update.sh in the same directory.
{
$channel_exprs
}
EOF