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62 lines
1.6 KiB
62 lines
1.6 KiB
#!/usr/bin/env bash
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set -eu
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unset -v opt OPTIND OPTARG version platform destdir
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version=
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platform=
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destdir=/usr/local
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usage() {
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case $# in
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[1-9]*) echo "$@" >&2;;
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esac
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cat <<- ENDEND
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usage: install_protoc.sh [-P platform] [-d destdir] -V version
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options:
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-V version protobuf version
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-P platform fetch and use given platform (default: autodetect)
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-d destdir install into the given dir (default: /usr/local)
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-h print this help
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ENDEND
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exit 64
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}
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while getopts :V:P:d:h opt
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do
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case "${opt}" in
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V) version="${OPTARG}";;
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P) platform="${OPTARG}";;
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d) destdir="${OPTARG}";;
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h) usage;;
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"?") usage "unrecognized option -${OPTARG}";;
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":") usage "missing argument for -${OPTARG}";;
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*) echo "unhandled option -${OPTARG}" >&2; exit 70;;
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esac
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done
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shift $((${OPTIND} - 1))
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case "${version}" in
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"") usage "protobuf version (-V) not specified";;
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esac
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case "${platform}" in
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"")
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platform=$(uname -s)
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case "${platform}" in
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Darwin) platform=osx;;
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Linux) platform=linux;;
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*) echo "unsupported OS name (${platform})" >&2; exit 69;;
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esac
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platform="${platform}-$(uname -m)"
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;;
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esac
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unset -v tmpdir
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trap 'case "${tmpdir-}" in ?*) rm -rf "${tmpdir}";; esac' EXIT
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tmpdir=$(mktemp -d)
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cd "${tmpdir}"
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unset -v filename url
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filename="protoc-${version}-${platform}.zip"
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url="https://github.com/protocolbuffers/protobuf/releases/download/v${version}/${filename}"
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echo "Downloading protoc v${version} for ${platform}..."
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curl -s -S -L -o "${filename}" "${url}"
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echo "Downloaded as ${filename}; unzipping into ${destdir}..."
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sudo unzip -o -d "${destdir}" "${filename}"
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echo "protoc v${version} has been installed in ${destdir}."
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sudo chmod +x "${destdir}/bin/protoc"
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exit 0
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