./gem-install-libv8-darwin-21.sh 7.3.492.27.1

gem-install-libv8-darwin-21.sh

#!/bin/bash
# filename: gem-install-libv8-darwin-20.sh

set -e
set -u
set -o pipefail

libv8_version="${1:-"8.4.255.0"}"
from='19'
to='21'

gem_home="$(ruby -e 'puts Gem.dir')"
ruby_platform="$(ruby -e 'puts Gem.platforms.select { |p| Gem::Platform === p && p.os =~ /darwin/ }')"
ruby_platform_prefix="${ruby_platform%-*}"

# case "${ruby_platform}" in
#     *universal*)
#         ruby_platform_prefix="x86_64-darwin"
#         ;;
# esac

ruby_platform_from="${ruby_platform_prefix}-${from}"
ruby_platform_to="${ruby_platform_prefix}-${to}"

echo " *** detecting"

echo "${gem_home}"
echo "${ruby_platform}"
echo "${ruby_platform_prefix}"

echo "libv8 ${libv8_version}: ${ruby_platform_from} => ${ruby_platform_to}"

echo " *** downloading"

test -f "/tmp/libv8-${libv8_version}-${ruby_platform_from}.gem" \
    || curl --fail --output "/tmp/libv8-${libv8_version}-${ruby_platform_from}.gem" "https://rubygems.org/downloads/libv8-${libv8_version}-${ruby_platform_from}.gem" \
    || curl --fail --output "/tmp/libv8-${libv8_version}-${ruby_platform_from}.gem" "https://rubygems.org/downloads/libv8-${libv8_version}-${ruby_platform_prefix}${from}.gem"

echo " *** cleaning"

rm -rfv "${gem_home}/specifications/libv8-${libv8_version}-"{"${ruby_platform_from}","${ruby_platform_to}"}".gemspec"
rm -rfv "${gem_home}/doc/libv8-${libv8_version}-"{"${ruby_platform_from}","${ruby_platform_to}"}
rm -rfv "${gem_home}/gems/libv8-${libv8_version}-"{"${ruby_platform_from}","${ruby_platform_to}"}
rm -rfv "${gem_home}/cache/libv8-${libv8_version}-"{"${ruby_platform_from}","${ruby_platform_to}"}".gem"

echo " *** installing"

gem install "/tmp/libv8-${libv8_version}-${ruby_platform_from}.gem" -- --with-system-v8

echo " *** patching"

mv -v "${gem_home}/specifications/libv8-${libv8_version}-"{"${ruby_platform_from}","${ruby_platform_to}"}".gemspec"
mv -v "${gem_home}/doc/libv8-${libv8_version}-"{"${ruby_platform_from}","${ruby_platform_to}"}
mv -v "${gem_home}/gems/libv8-${libv8_version}-"{"${ruby_platform_from}","${ruby_platform_to}"}
mv -v "${gem_home}/cache/libv8-${libv8_version}-"{"${ruby_platform_from}","${ruby_platform_to}"}".gem"

sed -i~ \
    -e "s/${ruby_platform_prefix}-${from}/${ruby_platform_to}/" \
    -e "s/${ruby_platform_prefix}${from}/${ruby_platform_to}/" \
    "${gem_home}/specifications/libv8-${libv8_version}-${ruby_platform_to}.gemspec"
rm "${gem_home}/specifications/libv8-${libv8_version}-${ruby_platform_to}.gemspec~"

echo " *** result"

find "${gem_home}"/*/"libv8-${libv8_version}-${ruby_platform_to}"
grep --text "${ruby_platform_to}" "${gem_home}/specifications/libv8-${libv8_version}-${ruby_platform_to}.gemspec"