docker-qemu/versions.sh
2020-08-27 16:34:48 -07:00

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#!/usr/bin/env bash
set -Eeuo pipefail
cd "$(dirname "$(readlink -f "$BASH_SOURCE")")"
versions=( "$@" )
if [ ${#versions[@]} -eq 0 ]; then
versions=( */ )
json='{}'
else
json="$(< versions.json)"
fi
versions=( "${versions[@]%/}" )
# https://download.qemu.org/?C=M;O=D
urls="$(
wget -qO- 'https://www.qemu.org/download/' \
| grep -oE 'https://download[.]qemu[.]org/qemu-([^"]+)[.]tar[.]xz' \
| sort -ruV
)"
for version in "${versions[@]}"; do
rcGrepV='-v'
rcVersion="${version%-rc}"
if [ "$rcVersion" != "$version" ]; then
rcGrepV=
fi
url="$(
grep -E "qemu-$rcVersion([.-])" <<<"$urls" \
| grep $rcGrepV -E -- '-rc' \
| head -1
)"
fullVersion="${url##*/qemu-}"
fullVersion="${fullVersion%%.tar.*}"
echo "$version: $fullVersion"
export version fullVersion url
json="$(jq <<<"$json" '
.[env.version] = {
version: env.fullVersion,
url: env.url,
}
')"
done
jq <<<"$json" -S . > versions.json