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URL_ICANN=https://data.iana.org/TLD/tlds-alpha-by-domain.txt
build/top-level-domains.txt:
curl -o build/top-level-domains.txt $(URL_ICANN)
regexp.go: build/top-level-domains.txt
tail +2 build/top-level-domains.txt \
| perl -pe 'chomp if eof' \
| tr '[:upper:]' '[:lower:]' \
| tr '\n' '|' > build/regexp.go-part2
cat <(perl -pe 'chomp if eof' build/regexp.go-part1) \
<(perl -pe 'chomp if eof' build/regexp.go-part2) \
build/regexp.go-part3 \
> regexp.go
.PHONY: clean
clean:
rm -f parcels regexp.go go.sum
.PHONY: build
build: regexp.go
go build