git clean stale archives

go-clean-archives.sh

#!/bin/bash

eval "$(go env)"

function clean_gopath() {
	gopath="$1"
	pkgpath="$gopath/pkg/${GOHOSTOS}_$GOHOSTARCH"
	if [[ ! -e "$pkgpath" ]]; then
		return
	fi
	while IFS='' read a; do
		pkg="${a%.a}"
		if [[ ! -e "$gopath/src/$pkg" ]]; then
			continue
		fi
		find "$gopath/src/$pkg" -maxdepth 1 \( -path "$gopath/src/$pkg" -o \( -name '*.go' \! -name '*_test.go' \) \) -newer "$pkgpath/$a" \( -exec rm "$pkgpath/$a" \; -o -true \) -quit &
	done < <(find "$pkgpath" -name '*.a' -printf '%P\n')
	wait
}

declare -A checked
IFS=: read -d '' -a gopaths < <(printf "%s" "$GOPATH")
for gopath in "${gopaths[@]}"; do
	if [[ -n "${checked[$gopath]}" ]]; then
		continue
	fi
	checked["$gopath"]=1
	clean_gopath "$gopath" &
done
wait