enfiles = Hash::new
jafiles = Hash::new

Dir.open('.').each { |f|
	next if /^\./.match f
	next unless /\.r[db]$/.match f
	next if f == __FILE__
	en = f.sub(/\.r.$/, '-en.html')
	ja = f.sub(/\.r.$/, '-ja.html')
	enfiles[en] = f
	jafiles[ja] = f
}

mf = open('Makefile.new', 'w')
mf.print <<END_OF_PREAMBLE
#!/usr/bin/make -f

RD2HTML=rd2 -r rd/rd2html-lib --with-css=style.css --with-part=HTML:html
RD2JA=$(RD2HTML) --html-charset=EUC-JP --with-part=JA:rd --out-code=euc
RD2EN=$(RD2HTML) --html-charset=US-ASCII --with-part=EN:rd --out-code=euc

HTMS=#{enfiles.keys.join(' ')} #{jafiles.keys.join(' ')}

all: $(HTMS) Makefile

END_OF_PREAMBLE

enfiles.each_pair {|htm, rd|
	base = htm.sub(/\.html$/, '')
	mf.print "#{htm}: #{rd} Makefile\n\t$(RD2EN) -o #{base} #{rd}\n\n"
}

jafiles.each_pair {|htm, rd|
	base = htm.sub(/\.html$/, '')
	mf.print "#{htm}: #{rd} Makefile\n\t$(RD2JA) -o #{base} #{rd}\n\n"
}

mf.print <<END_OF_TRAILER

Makefile:
	ruby ./mkmf.rb

clean:
	-rm -f $(HTMS)

END_OF_TRAILER
mf.close

File.delete('Makefile') if File.exist?('Makefile')
File.rename('Makefile.new', 'Makefile')