.PHONY: help pdftotext extract init
help:
	@cat doc/help.txt

pdftotext: | init
	@find ./data -iname '*.pdf' -execdir pdftotext {} \;
	@find ./data -not \( -path ./data/text -prune \) -iname '*.txt' -exec mv {} './data/text/' ';'

extract: pdftotext
	@perl extract_urls.pl data/text/*.txt > $$(date +"output/links-%FT%T.txt")

init:
	@[ -d "data/text" ] || mkdir -p data/text
	@[ -d "output" ] || mkdir output