nixpkgs/pkgs/applications/networking/browsers/chromium/update.sh

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#!/bin/sh
channels_url="http://omahaproxy.appspot.com/all?csv=1";
history_url="http://omahaproxy.appspot.com/history";
bucket_url="http://commondatastorage.googleapis.com/chromium-browser-official/";
base_path="$(cd "$(dirname "$0")" && pwd)/source";
source "$(nix-build --no-out-link "$base_path/update.nix" -A updateHelpers)";
### poor mans key/value-store :-) ###
ver_sha_table=""; # list of version:sha256
sha_insert()
{
version="$1";
sha256="$2";
ver_sha_table="$ver_sha_table $version:$sha256";
}
get_newest_ver()
{
versions="$(for v in $@; do echo "$v"; done)";
if oldest="$(echo "$versions" | sort -V 2> /dev/null | tail -n1)";
then
echo "$oldest";
else
echo "$versions" | sort -t. -k 1,1n -k 2,2n -k 3,3n -k 4,4n | tail -n1;
fi;
}
fetch_filtered_history()
{
curl -s "$history_url" | sed -nr 's/^'"linux,$1"',([^,]+).*$/\1/p';
}
get_prev_sha256()
{
channel="$1";
current_version="$2";
for version in $(fetch_filtered_history "$channel");
do
[ "x$version" = "x$current_version" ] && continue;
sha256="$(get_sha256 "$channel" "$version")" || continue;
echo "$sha256:$version";
return 0;
done;
}
get_channel_exprs()
{
for chline in $1;
do
channel="${chline%%,*}";
version="${chline##*,}";
sha256="$(get_sha256 "$channel" "$version")";
if [ $? -ne 0 ];
then
echo "Whoops, failed to fetch $version, trying previous" \
"versions:" >&2;
sha_ver="$(get_prev_sha256 "$channel" "$version")";
sha256="${sha_ver%:*}";
version="${sha_ver#*:}";
fi;
sha_insert "$version" "$sha256";
main="${sha256%%.*}";
deb="${sha256#*.}";
deb32="${deb%.*}";
deb64="${deb#*.}";
echo " $channel = {";
echo " version = \"$version\";";
echo " sha256 = \"$main\";";
if [ "x${deb#*[a-z0-9].[a-z0-9]}" != "x$deb" ];
then
echo " sha256bin32 = \"$deb32\";";
echo " sha256bin64 = \"$deb64\";";
fi;
echo " };";
done;
}
cd "$(dirname "$0")";
omaha="$(curl -s "$channels_url")";
versions="$(echo "$omaha" | sed -nr -e 's/^linux,([^,]+,[^,]+).*$/\1/p')";
channel_exprs="$(get_channel_exprs "$versions")";
cat > "$base_path/sources.nix" <<-EOF
# This file is autogenerated from update.sh in the parent directory.
{
$channel_exprs
}
EOF