SHELL=/bin/bash

SGMLS = \
	dvbapi.sgml \
	intro.xml \
	frontend.xml \
	isdbt.xml \
	demux.xml \
	video.xml \
	audio.xml \
	ca.xml \
	net.xml \
	kdapi.xml \
	examples.xml \
	fdl-appendix.xml \
	entities.xml \

PDFPICS = \
	dvbstb.pdf \

GIFPICS = \
	dvbstb.png \

# Some Jade warnings for authors.
WARN =
#WARN = -w all -w duplicate -w net

# Stylesheet customization.
	# docbook/db2 syntax
CUSTOM_HTML = --dsl custom.dsl\#html
CUSTOM_PRINT = --dsl custom.dsl\#print
	# xmlto syntax
CUSTOM_HTML_XMLTO = -m custom.xsl
CUSTOM_PRINT_XMLTO = -m custom.xsl

all: html-single

html: html-build.stamp

html-single: html-single-build.stamp

pdf: pdf-build.stamp

man: man-build.stamp

man_install: man-build.stamp
	install -d /usr/local/man/man2
	install -b man/* /usr/local/man/man2

.PHONY: links

$(SGMLS): links
$(PDFPICS): links
$(GIFPICS): links

links::
	ln -sf ../../linux/Documentation/DocBook/dvb/* .
	ln -sf ../../linux/Documentation/DocBook/v4l/fdl-appendix.xml .

entities.xml: Makefile $(SGMLS)
	echo "<!-- Generated file! Do not edit. -->" >$@
	echo -e "\n<!-- Subsections -->" >>$@
	for file in $(SGMLS) ; do \
	  entity=`echo "$$file" | sed 's/.xml//;s/\./-/g'` ; \
	  if ! echo "$$file" | \
	    grep -q -E -e '^(func|vidioc|pixfmt)-' ; then \
	      echo "<!ENTITY sub-$$entity SYSTEM \"$$file\">" >>$@ ; \
	 fi ; \
	done

# Jade can auto-generate a list-of-tables, which includes all structs,
# but we only want data types, all types, and sorted please.
indices.xml: Makefile $(SGMLS)
	echo "<!-- Generated file! Do not edit. -->" >$@
	echo -e "\n<index><title>List of Types</title>" >>$@
	for ident in $(TYPES) ; do \
	  id=`echo $$ident | tr _ -` ; \
	  echo "<indexentry><primaryie><link" \
	    "linkend='$$id'>$$ident</link></primaryie></indexentry>" >>$@ ; \
	done
	for ident in $(ENUMS) ; do \
	  echo "<indexentry><primaryie>enum&nbsp;<link" \
	    "linkend='$$id'>$$ident</link></primaryie></indexentry>" >>$@ ; \
	done
	for ident in $(STRUCTS) ; do \
	  id=`echo $$ident | tr _ -` ; \
	  echo "<indexentry><primaryie>struct&nbsp;<link" \
	    "linkend='$$id'>$$ident</link></primaryie></indexentry>" >>$@ ; \
	done
	echo "</index>" >>$@

# HTML version.
html-build.stamp: Makefile $(SGMLS) $(GIFPICS)
	rm -rf dvbapi
	if which xmlto >/dev/null ; then \
	  xmlto xhtml $(WARN) $(CUSTOM_HTML_XMLTO) -o dvbapi dvbapi.sgml ; \
	elif which docbook2html >/dev/null ; then \
	  export DCL="--dcl `find /usr/share/sgml -name xml.dcl |head -1`"; \
	  docbook2html $(WARN) $$DCL $(CUSTOM_HTML) --output dvbapi dvbapi.sgml ; \
	else \
	  export DCL="--dcl `find /usr/share/sgml -name xml.dcl |head -1`"; \
	  db2html $(WARN) $$DCL $(CUSTOM_HTML) --output dvbapi dvbapi.sgml ; \
	fi
	cp $(GIFPICS) dvbapi/
	cd dvbapi ; \
	test -e index.html || ln -s book1.htm index.html ; \
	test -e capture-example.html || \
	  ln -s `grep -l getopt_long *.htm` capture-example.html
	chmod a+rX -R dvbapi
	touch html-build.stamp

# For online version. When you have a dial-up connection a single file
# is more convenient than clicking through dozens of pages.
html-single-build.stamp: Makefile $(SGMLS) $(GIFPICS)
	rm -rf dvbapi-single
	if which xmlto >/dev/null ; then \
	  xmlto html-nochunks $(WARN) $(CUSTOM_HTML_XMLTO) -o dvbapi-single dvbapi.sgml ; \
	elif which docbook2html >/dev/null ; then \
	  export DCL="--dcl `find /usr/share/sgml -name xml.dcl |head -1`"; \
	  docbook2html $$DCL $(WARN) $(CUSTOM_HTML) --nochunks \
	    --output dvbapi-single dvbapi.sgml ; \
	else \
	  export DCL="--dcl `find /usr/share/sgml -name xml.dcl |head -1`"; \
	  db2html $$DCL $(WARN) $(CUSTOM_HTML) --nochunks \
	    --output dvbapi-single dvbapi.sgml ; \
	fi
	cp $(GIFPICS) dvbapi-single/
	chmod a+rX -R dvbapi-single
	touch html-single-build.stamp

# For printing.
pdf-build.stamp: Makefile $(SGMLS) $(PDFPICS)
	if which db2pdf >/dev/null ; then \
	  export DCL="--dcl `find /usr/share/sgml -name xml.dcl|head -1`"; \
	  db2pdf $$DCL $(WARN) $(CUSTOM_PRINT) dvbapi.sgml ; \
	elif which xmlto >/dev/null ; then \
	  xmlto pdf $(WARN) $(CUSTOM_HTML_XMLTO) -o dvbapi-single dvbapi.sgml ; \
	else \
	  export DCL="--dcl `find /usr/share/sgml -name xml.dcl |head -1`"; \
	  docbook2pdf $$DCL $(WARN) $(CUSTOM_PRINT) dvbapi.sgml ; \
	fi
	touch pdf-build.stamp


# For man
man-build.stamp: Makefile $(SGMLS) $(PDFPICS)
	xmlto man $(WARN) $(CUSTOM_HTML_XMLTO) -o man dvbapi.sgml

distclean clean:
	rm -f *.stamp
	rm -f indices.xml entities.xml
	find . -type l -exec rm '{}' \;