make-unizip

#! /usr/bin/env bash

# ===========================================================================
#
# Copyright (c) 2021 Unvanquished Developers
#
# Permission is hereby granted, free of charge, to any person obtaining a copy
# of this software and associated documentation files (the "Software"), to deal
# in the Software without restriction, including without limitation the rights
# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
# copies of the Software, and to permit persons to whom the Software is
# furnished to do so, subject to the following conditions:
#
# The above copyright notice and this permission notice shall be included in all
# copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
# SOFTWARE.
#
# ===========================================================================

set -eu

if [ $# != 1 ] || [ ! -d "$1" ]
then
	echo "Usage: $0 <release_dir>"
	echo 'Creates a partial universal zip with whatever components have been built'
	exit 1
fi

release_dir="$(sed -E 's!/+!/!g; s!(.)/$!\1!' <<< "$1")" # 7z chokes on extra slashes
version='0' # TODO
work_dir="${release_dir}/unizip_staging"

release_basename="unvanquished_${version}"
release_zip="${release_basename}.zip"
symbols_basename="symbols_${version}"
symbols_zip="symbols_${version}.zip"

content_dir="${work_dir}/${release_basename}"

extractSymbols () {
	local archive="$1"
	if symbol_archive=$(7z l "${archive}" | grep -oE 'symbols.*\.7z|unvanquished_.*/symbols_.*\.zip')
	then
		echo "extracting ${symbol_archive}"
		mkdir -p "${work_dir}/symbols"
		7z x -o"${work_dir}" "${archive}" "${symbol_archive}" >/dev/null
		7z x -o"${work_dir}/symbols" "${work_dir}/${symbol_archive}" >/dev/null
		echo "deleting ${symbol_archive} from ${archive}"
		7z d "${archive}" "${symbol_archive}" >/dev/null
	fi
}

if [ -d "${work_dir}" ]
then
	rm -rv "${work_dir}"
fi

mkdir -v "${work_dir}"
mkdir -v "${content_dir}"

# If there is already a supposedly incomplete release zip, for example
# an unvanquished_0.zip containing linux-amd64.zip, windows-i386.zip
# and windows-amd64.zip, and a lone macos-amd64.zip build next to it,
# extend unvanquished_0.zip with macos-amd64.zip.
if [ -f "${release_dir}/${release_zip}" ]
then
	extractSymbols "${release_dir}/${release_zip}"

	7z x -o"${work_dir}" "${release_dir}/${release_zip}" >/dev/null
fi

if cp --preserve=timestamps "$0" "${work_dir}/timestamp-test"
then
	alias cp='cp --preserve=timestamps'
fi

cp -v "$(dirname $0)/unizip-readme.txt" "${content_dir}/README.txt"

# Prepare pkg/
mkdir -pv "${content_dir}/pkg"
for dpk in $(find "${release_dir}" ! -path "${work_dir}/*" -name '*.dpk')
do
	dest="${content_dir}/pkg/$(basename "${dpk}")"
	cp -v "${dpk}" "${dest}"
	extractSymbols "${dest}"
done

(
	cd "${content_dir}/pkg"
	if ls *.dpk >/dev/null 2>&1
	then
		md5sum --binary -- *.dpk > md5sums
	else
		touch md5sums
	fi
)

# Prepare <os>-<arch>.zip
for os_zip in $(find "${release_dir}" ! -path "${work_dir}/*" -name '*.zip' | grep -E '/(windows|macos|linux)-[^/]*$')
do
	dest="${content_dir}/$(basename "${os_zip}")"
	cp -v "${os_zip}" "${dest}"
	extractSymbols "${dest}"
done

# Compress symbols
(
	if [ -d "${work_dir}/symbols" ]
	then
		cd "${work_dir}/symbols"
		7z a -tzip -mx=9 "../${release_basename}/symbols_${version}.zip" .
	fi
)

# Create (partial) universal zip
(
	cd "${work_dir}"
	if [ -f "../unvanquished_${version}.zip" ]
	then
		rm -v "../unvanquished_${version}.zip"
	fi
	# Even though almost all the contents are compressed already, it still saves some...
	7z a -tzip -mx=9 "../${release_zip}" "${release_basename}"
)

rm -rv "${work_dir}"