commit-release

#!/bin/sh

set -eu

dir=$1
version=$2
date=$3

if [ ! "$dir" ]; then
	echo "usage: $0 dir [date]" >&2
	exit 2
fi

echo dir=$dir
echo date=$date

download_and_extract() {
	_name=$1 &&
	_version=$2 &&
	if [ "$_version" = "`cat $dir/$_name/.version`" ]; then return; fi &&
	_file=$_name-$_version.tar.gz &&
	_url=https://github.com/apple-oss-distributions/$_name/archive/$_file &&
	# Keep the most recent items in cache
	(cd cache && ls -t | tail -n +1000 | xargs -I {} rm -- {}) &&
	# tar considers empty files to be valid, so check with gzip
	if ! gzip -t cache/$_file; then
		echo downloading $_url
		_status=`curl -sL -D - -o cache/$_file $_url | \
			awk '/^HTTP/{s=$2}END{print s}'`
		if [ "$_status" = 404 ]; then
			return 4
		elif [ "$_status" != 200 ]; then
			return 1
		fi
	fi &&
	_dirname=`tar -tf cache/$_file | head -n 1 | cut -f 1 -d '/'` &&
	gzip -t cache/$_file &&
	tar -C $dir -xzf cache/$_file &&
	# If directory lacks write permission, add it to allow removing files.
	# If file size greater than 100MB (GitHub limit), remove it.
	# Else if file lacks read permission, add it so git can read the file.
	find $dir/$_dirname -type d ! -perm -u+w -exec chmod +w {} + -o \
		-type f \( -size +204800 -exec rm -f {} + -o \
			! -perm -u+r -exec chmod +r {} + \) &&
	if [ -d "$dir/$_name" ]; then rm -rf $dir/$_name; fi &&
	mv $dir/$_dirname $dir/$_name &&
	echo $_version > $dir/$_name/.version || return 1
}

echo .version > $dir/.git/info/exclude
mkdir -p cache
if [ "$date" ]; then
	export GIT_AUTHOR_DATE="${date}T00:00Z"
	export GIT_COMMITTER_DATE="${date}T00:00Z"
fi

read comment name

echo name=$name
echo version=$version

names=
echo $comment $name > $dir/release.txt
while read _name _version; do
	if [ ! "$_name" ]; then continue; fi
	echo name=$_name version=$_version
	if [ "$names" ]; then
		names="$names|$_name"
	else
		names=$_name
	fi
	printf "%s\t%s\n" "$_name" "$_version" >> $dir/release.txt
	download_and_extract $_name $_version &&
	_status=$? || _status=$?
	if [ "$_status" = 4 ]; then
		echo skipping
	elif [ "$_status" != 0 ]; then
		exit 1
	fi
done
removed=`printf "%s\n" $dir/*/ | grep -E -v "$dir/($names)/" || true`
# macOS 10.0.1 - 10.0.3 are missing most things so ignore them
# Same with some Developer Tools versions
if
	[ "$removed" ] &&
	[ "$name" != "Mac OS X 10.0.1" ] &&
	[ "$name" != "Mac OS X 10.0.2" ] &&
	[ "$name" != "Mac OS X 10.0.3" ] &&
	[ "$name" != "Developer Tools 2.1" ] &&
	[ "$name" != "Developer Tools 3.0" ] &&
	[ "$name" != "Developer Tools 3.2" ]
then
	echo REMOVING "$removed"
	rm -rf $removed
fi
git -C $dir add .
git -C $dir lfs ls-files -n | xargs -E '' -I {} git -C $dir rm -f -- {}
git -C $dir commit -m $version
git -C $dir tag $version
if [ "${PUSH_RELEASE-}" ]; then
	git -C $dir push && git -C $dir push --tags
fi