TARGETS=doc/pseudo.pdf doc/fig/readmefig.svg

LATEX=latexmk -norc -pdf -auxdir=build -outdir=build
FIGS=build/hilitefig.pdf build/pausefig.pdf build/kwfig.pdf
TESTS=build/pseudotest.pdf build/beamertest.pdf

all: $(TARGETS)

doc/pseudo.pdf: build/pseudo.pdf
	mkdir -p $(@D) && cp $< $@

build/pseudo.pdf: doc/pseudo.tex build/pseudo.bib $(FIGS) $(TESTS) README.md pseudo.sty
	$(LATEX) $<

build/pseudo.bib: doc/pseudo.bib
	mkdir -p $(@D) && cp $< $@

build/hilitefig.pdf: doc/fig/hilitefig.tex pseudo.sty
	$(LATEX) $<

build/pausefig.pdf: doc/fig/pausefig.tex pseudo.sty
	$(LATEX) $<

build/kwfig.pdf: doc/fig/kwfig.tex pseudo.sty
	$(LATEX) $<

build/pseudotest.pdf: test/pseudotest.tex pseudo.sty
	$(LATEX) $<

build/beamertest.pdf: test/beamertest.tex pseudo.sty
	$(LATEX) $<

# When the revision number is computed in branches other than master, a squashed
# merge is assumed.
pseudo.sty:	VERSION LICENSE doc/pseudo.tex
	VERSION="$$(cat VERSION)"; \
	PREVTAG="$$(git describe --tags --abbrev=0 master)"; \
	COMMITS="$$(git rev-list --count master ^$$PREVTAG)"; \
	COMMITS="$$(expr $$COMMITS + 1)"; \
	REVISION=""; \
	if git diff --quiet VERSION && git diff --cached --quiet VERSION; then \
	    REVISION=".$$COMMITS"; \
	fi; \
	A="1"; \
	cat LICENSE | sed -e "s/^/% /" | sed -e "s/^% \$$/%/" > pseudo.sty; \
	echo "%" >> pseudo.sty; \
	cat doc/pseudo.tex | sed -n \
		-e "/\\begin{source}/,/\\end{source}/{" \
		-e "/\\begin{source}/b" \
		-e "/\\end{source}/b" \
		-e "s/_@@/__pseudo/g" \
		-e "s/@@/__pseudo/g" \
		-e "s/VERSION/$$VERSION/g" \
		-e "s/REVISION/$$REVISION/g" \
		-e "s/DATE/$$(date +"%Y\/%m\/%d")/g" \
		-e "s/[ ]*%.*\$$//" \
		-e "/^\$$/d" \
		-e "p" \
		-e "}" >> pseudo.sty

build/readmecode.tex: doc/fig/readmecode.tex
	mkdir -p $(@D) && cp $< $@

build/readmefig.pdf: doc/fig/readmefig.tex build/readmecode.tex
	$(LATEX) $<

doc/fig/readmefig.svg: build/readmefig.pdf
	pdf2svg $< $@
	sed -i.bak -E '/<svg /s/(width|height)="([0-9.]+)"/\1="\2pt"/g' $@ && rm $@.bak

doc/fig/readmecode.tex: README.md
	cat $< | sed -n -e "/\\begin{pseudo}\\*$$/,/\\end{pseudo}/p" > $@