112 lines
2.8 KiB
Bash
Executable File
112 lines
2.8 KiB
Bash
Executable File
#!/bin/bash
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set -Eeuo pipefail
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self="$(basename "$BASH_SOURCE")"
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cd "$(dirname "$(readlink -f "$BASH_SOURCE")")"
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gitHubUrl='https://github.com/docker-library/busybox'
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rawGitUrl="$gitHubUrl/raw"
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# prefer uclibc, but if it's unavailable use glibc if possible since it's got less "edge case" behavior, especially around DNS
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variants=(
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uclibc
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glibc
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musl
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)
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# (order here determines "preference" for representing "latest")
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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#$sep}"
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}
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# pre-flight sanity checks
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fullVersion=
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for variant in "${variants[@]}"; do
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[ -f "$variant/Dockerfile.builder" ]
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oldVersion="$fullVersion"
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fullVersion="$(awk '$1 == "ENV" && $2 == "BUSYBOX_VERSION" { print $3; exit }' "$variant/Dockerfile.builder")"
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[ -n "$fullVersion" ]
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[ "$fullVersion" = "${oldVersion:-$fullVersion}" ]
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done
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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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$fullVersion
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latest
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)
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declare -A archLatest=()
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for variant in "${variants[@]}"; do
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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/$variant/busybox.tar.xz"; then
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variantArches+=( "$arch" )
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if [ -z "${archLatest[$arch]:-}" ]; then
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archLatest[$arch]="$variant"
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fi
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fi
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done
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echo
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cat <<-EOE
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Tags: $(join ', ' "${variantAliases[@]}")
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Architectures: $(join ', ' "${variantArches[@]}")
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Directory: $variant
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EOE
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done
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echo
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cat <<-EOE
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Tags: $(join ', ' "${versionAliases[@]}")
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Architectures: $(join ', ' "${arches[@]}")
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EOE
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for arch in "${arches[@]}"; do
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archVariant="${archLatest[$arch]}"
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cat <<-EOA
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${arch}-Directory: $archVariant
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EOA
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done
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