# --- utilities ---

TESTDATE = -d 'November 17, 2014'
POD2MAN = pod2man
POD2MANARGS = -c 'General Commands Manual' -r 'OpenBSD ports'
GROFF = groff -Tascii -P -c
MANDOC = mandoc -Tascii
DIFF = diff -u
POD2MDOC = ../../pod2mdoc

# --- lists ---

PREMANS = ${TARGETS:S/$/.preman/}
MANS = ${TARGETS:S/$/.man/}
GROFFMANS = ${TARGETS:S/$/.groff_man/}
MANDOCMANS = ${TARGETS:S/$/.mandoc_man/}
MANDOCMANMS = ${TARGETS:S/$/.mandoc_manm/}
DIFFMANS = ${TARGETS:S/$/.diff_man/}
MDOCS = ${TARGETS:S/$/.mdoc/}
GROFFMDOCS = ${TARGETS:S/$/.groff_mdoc/}
MANDOCMDOCS = ${TARGETS:S/$/.mandoc_mdoc/}
DIFFMDOCS = ${TARGETS:S/$/.diff_mdoc/}
DIFFS = ${TARGETS:S/$/.diff/}

# --- production targets ---

all: manall mdoc groffmdoc mandocmdoc diffmdoc maindiff

clean: mdoc-clean groffmdoc-clean mandocmdoc-clean
	rm -f *.part *.core

mdoc: ${MDOCS}

mdoc-clean:
	rm -f ${MDOCS}

groffmdoc: ${GROFFMDOCS}

groffmdoc-clean:
	rm -f ${GROFFMDOCS}

mandocmdoc: ${MANDOCMDOCS}

mandocmdoc-clean:
	rm -f ${MANDOCMDOCS}

diffmdoc: ${DIFFMDOCS}

maindiff: ${DIFFS}

# --- maintainer targets ---

manall: man groffman mandocman mandocmanm diffman

allclean: clean preman-clean man-clean \
	  groffman-clean mandocman-clean mandocmanm-clean

preman: ${PREMANS}

preman-clean:
	rm -f ${PREMANS}

man: ${MANS}

man-clean:
	rm -f ${MANS}

groffman: ${GROFFMANS}

groffman-clean:
	rm -f ${GROFFMANS}

mandocman: ${MANDOCMANS}

mandocman-clean:
	rm -f ${MANDOCMANS}

mandocmanm: ${MANDOCMANMS}

mandocmanm-clean:
	rm -f ${MANDOCMANMS}

diffman: ${DIFFMANS}

.for t in ${TARGETS}
${t}.diff_man: ${t}.groff_man ${t}.mandoc_man
	${DIFF} $?
${t}.diff_mdoc: ${t}.groff_mdoc ${t}.mandoc_mdoc
	${DIFF} $?
${t}.diff: ${t}.mandoc_manm ${t}.mandoc_mdoc
	${DIFF} $?
${t}:${t}.diff
.endfor

# --- suffix rules ---

.SUFFIXES: .pod .preman .man .groff_man .mandoc_man .mandoc_manm .diff_man
.SUFFIXES: .mdoc .groff_mdoc .mandoc_mdoc

.pod.preman:
	-${POD2MAN} ${POD2MANARGS} ${TESTDATE} $< > $@

.preman.man:
	../p2m_postproc.pl < $< > $@.part
	@mv $@.part $@

.man.groff_man:
	${GROFF} -man $< > $@.part
	@mv $@.part $@

.man.mandoc_man:
	${MANDOC} -man $< > $@.part
	@mv $@.part $@

.man.mandoc_manm:
	${MANDOC} -man -Omdoc $< > $@.part
	@mv $@.part $@

.pod.mdoc:
	${POD2MDOC} ${TESTDATE} $< > $@.part
	@mv $@.part $@

.mdoc.groff_mdoc:
	${GROFF} -mdoc $< > $@.part
	@mv $@.part $@

.mdoc.mandoc_mdoc:
	${MANDOC} -mdoc -Ios='OpenBSD ports' $< > $@.part
	@mv $@.part $@