.PHONY: all
all:
	@echo 'Try `cargo build` instead.'

.PHONY: authors
authors:
	echo 'Chrono is mainly written by Kang Seonghoon <public+rust@mearie.org>,' > AUTHORS.txt
	echo 'and also the following people (in ascending order):' >> AUTHORS.txt
	echo >> AUTHORS.txt
	git log --format='%aN <%aE>' | grep -v 'Kang Seonghoon' | sort -u >> AUTHORS.txt

.PHONY: readme
readme: README.md

README.md: src/lib.rs
	# really, really sorry for this mess.
	awk '/^# Chrono /{print "[Chrono][doc]",$$3}' $< > $@
	awk '/^# Chrono /{print "[Chrono][doc]",$$3}' $< | sed 's/./=/g' >> $@
	echo >> $@
	echo '[![Chrono on Travis CI][travis-image]][travis]' >> $@
	echo >> $@
	echo '[travis-image]: https://travis-ci.org/lifthrasiir/rust-chrono.png' >> $@
	echo '[travis]: https://travis-ci.org/lifthrasiir/rust-chrono' >> $@
	awk '/^# Chrono /,/^## /' $< | tail -n +2 | head -n -2 >> $@
	echo >> $@
	echo '[Complete Documentation][doc]' >> $@
	echo >> $@
	echo '[doc]: https://lifthrasiir.github.io/rust-chrono/' >> $@
	echo >> $@
	awk '/^## /,/^\*\/$$/' $< | grep -v '^# ' | head -n -2 >> $@