141 lines
3.5 KiB
Bash
Executable File
141 lines
3.5 KiB
Bash
Executable File
#!/usr/bin/env bash
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set -Eeuo pipefail
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gitHubUrl='https://github.com/docker-library/busybox'
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rawGitUrl="$gitHubUrl/raw"
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self="$(basename "$BASH_SOURCE")"
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cd "$(dirname "$(readlink -f "$BASH_SOURCE")")"
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if [ "$#" -eq 0 ]; then
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versions="$(jq -r 'keys | map(@sh) | join(" ")' versions.json)"
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eval "set -- $versions"
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fi
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archMaps=( $(
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git ls-remote --heads "${gitHubUrl}.git" \
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| awk -F '[\t/]' '$4 ~ /^dist-/ { gsub(/^dist-/, "", $4); print $4 "=" $1 }' \
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| sort
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) )
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arches=()
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declare -A archCommits=()
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for archMap in "${archMaps[@]}"; do
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arch="${archMap%%=*}"
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commit="${archMap#${arch}=}"
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arches+=( "$arch" )
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archCommits[$arch]="$commit"
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done
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selfCommit="$(git log --format='format:%H' -1)"
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cat <<-EOH
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# this file is generated via $gitHubUrl/blob/$selfCommit/$self
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Maintainers: Tianon Gravi <admwiggin@gmail.com> (@tianon),
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Joseph Ferguson <yosifkit@gmail.com> (@yosifkit),
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Jérôme Petazzoni <jerome.petazzoni@gmail.com> (@jpetazzo)
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GitRepo: $gitHubUrl.git
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GitCommit: $selfCommit
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EOH
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for arch in "${arches[@]}"; do
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commit="${archCommits[$arch]}"
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cat <<-EOA
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# $gitHubUrl/tree/dist-${arch}
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${arch}-GitFetch: refs/heads/dist-${arch}
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${arch}-GitCommit: $commit
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EOA
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done
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# prints "$2$1$3$1...$N"
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join() {
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local sep="$1"; shift
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local out; printf -v out "${sep//%/%%}%s" "$@"
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echo "${out#$sep}"
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}
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# if stable is 1.32.1 and unstable is 1.33.0, we want busybox:1.33 to point to unstable but busybox:1 (and busybox:latest) to point to stable
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# since stable always comes first, we'll just let it take all the tags it calculates, and use this to remove any overlap when we process unstable :)
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declare -A usedTags=()
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_tags() {
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local tag first=
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for tag; do
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[ -z "${usedTags[$tag]:-}" ] || continue
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usedTags[$tag]=1
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if [ -z "$first" ]; then
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echo
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echo -n 'Tags: '
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first=1
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else
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echo -n ', '
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fi
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echo -n "$tag"
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done
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if [ -z "$first" ]; then
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return 1
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fi
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echo
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return 0
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}
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allVersions=()
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for version; do
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export version
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variants="$(jq -r '.[env.version].variants | map(@sh) | join(" ")' versions.json)"
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eval "variants=( $variants )"
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fullVersion="$(jq -r '.[env.version].version' versions.json)"
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allVersions+=( "$fullVersion" )
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latestVersion="$(xargs -n1 <<<"${allVersions[*]}" | sort -V | tail -1)"
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if [ "$latestVersion" != "$fullVersion" ]; then
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# if "unstable" is older than "stable" (1.32.0 unstable vs 1.32.1 stable, for example), skip unstable
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continue
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fi
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versionAliases=()
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while [ "${fullVersion%.*}" != "$fullVersion" ]; do
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versionAliases+=( $fullVersion )
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fullVersion="${fullVersion%.*}"
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done
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versionAliases+=(
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$fullVersion
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$version # "stable", "unstable"
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latest
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)
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declare -A archLatestDir=()
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for variant in "${variants[@]}"; do
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dir="$version/$variant"
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variantAliases=( "${versionAliases[@]/%/-$variant}" )
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variantAliases=( "${variantAliases[@]//latest-/}" )
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variantArches=()
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for arch in "${arches[@]}"; do
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archCommit="${archCommits[$arch]}"
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if wget --quiet --spider -O /dev/null -o /dev/null "$rawGitUrl/$archCommit/$dir/busybox.tar.xz"; then
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variantArches+=( "$arch" )
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: "${archLatestDir[$arch]:=$dir}" # record the first supported directory per architecture for "latest" and friends
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fi
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done
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if _tags "${variantAliases[@]}"; then
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cat <<-EOE
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Architectures: $(join ', ' "${variantArches[@]}")
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Directory: $dir
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EOE
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fi
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done
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if _tags "${versionAliases[@]}"; then
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cat <<-EOE
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Architectures: $(join ', ' "${arches[@]}")
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EOE
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for arch in "${arches[@]}"; do
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archDir="${archLatestDir[$arch]}"
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cat <<-EOA
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${arch}-Directory: $archDir
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EOA
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done
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fi
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done
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