99 lines
2.7 KiB
Bash
Executable file
99 lines
2.7 KiB
Bash
Executable file
#!/usr/bin/env bash
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set -Eeuo pipefail
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fileSizeThresholdMB='2'
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: "${BASHBREW_CACHE:=$HOME/.cache/bashbrew}"
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export BASHBREW_CACHE BASHBREW_ARCH=
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if [ ! -d "$BASHBREW_CACHE/git" ]; then
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# initialize the "bashbrew cache"
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bashbrew --arch amd64 from --uniq --apply-constraints hello-world:linux > /dev/null
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fi
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_git() {
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git -C "$BASHBREW_CACHE/git" "$@"
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}
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if [ "$#" -eq 0 ]; then
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set -- '--all'
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fi
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imgs="$(bashbrew list --repos "$@" | sort -u)"
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for img in $imgs; do
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IFS=$'\n'
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commits=( $(
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bashbrew cat --format '
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{{- range $e := .Entries -}}
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{{- range $a := .Architectures -}}
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{{- /* force `git fetch` */ -}}
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{{- $froms := $.ArchDockerFroms $a $e -}}
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{{- $e.ArchGitCommit $a -}}
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{{- "\n" -}}
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{{- end -}}
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{{- end -}}
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' "$img" | sort -u
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) )
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unset IFS
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declare -A naughtyCommits=() naughtyTopCommits=() seenCommits=()
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for topCommit in "${commits[@]}"; do
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IFS=$'\n'
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potentiallyNaughtyGlobs=( '**.tar**' )
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potentiallyNaughtyCommits=( $(_git log --diff-filter=DMT --format='format:%H' "$topCommit" -- "${potentiallyNaughtyGlobs[@]}") )
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unset IFS
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# bash 4.3 sucks (https://stackoverflow.com/a/7577209/433558)
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[ "${#potentiallyNaughtyCommits[@]}" -gt 0 ] || continue
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for commit in "${potentiallyNaughtyCommits[@]}"; do
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[ -z "${seenCommits[$commit]:-}" ] || break
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seenCommits[$commit]=1
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IFS=$'\n'
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binaryFiles=( $(
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_git diff-tree --no-commit-id -r --numstat --diff-filter=DMT "$commit" -- "${potentiallyNaughtyGlobs[@]}" \
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| grep '^-' \
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| cut -d$'\t' -f3- \
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|| :
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) )
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unset IFS
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# bash 4.3 sucks (https://stackoverflow.com/a/7577209/433558)
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[ "${#binaryFiles[@]}" -gt 0 ] || continue
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naughtyReasons=()
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for file in "${binaryFiles[@]}"; do
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fileSize="$(_git ls-tree -r --long "$commit" -- "$file" | awk '{ print $4 }')"
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fileSizeMB="$(( fileSize / 1024 / 1024 ))"
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if [ "$fileSizeMB" -gt "$fileSizeThresholdMB" ]; then
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naughtyReasons+=( "modified binary file (larger than ${fileSizeThresholdMB}MB): $file (${fileSizeMB}MB)" )
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fi
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done
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if [ "${#naughtyReasons[@]}" -gt 0 ]; then
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IFS=$'\n'
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naughtyCommits[$commit]="${naughtyReasons[*]}"
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unset IFS
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naughtyTopCommits[$commit]="$topCommit"
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fi
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done
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done
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if [ "${#naughtyCommits[@]}" -gt 0 ]; then
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echo " - $img:"
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for naughtyCommit in "${!naughtyCommits[@]}"; do
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naughtyReasons="${naughtyCommits[$naughtyCommit]}"
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naughtyTopCommit="${naughtyTopCommits[$naughtyCommit]}"
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if [ "$naughtyTopCommit" != "$naughtyCommit" ]; then
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#commitsBetween="$(_git rev-list --count "$naughtyCommit...$naughtyTopCommit")"
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naughtyCommit+=" (in history of $naughtyTopCommit)"
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fi
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echo " - commit $naughtyCommit:"
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sed -e 's/^/ - /' <<<"$naughtyReasons"
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done
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echo
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fi
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done
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