###
### To be included in your makefile; set the following variables:
###
### INPUT       = name of the file to be input to xml2rfc
###
### XML2RFC_DIR = path to the version of xml2rfc you want to use
###
### TOHTML      = xml2rfc | xslt
###         	   selects which tool is used to produce the html version.
###
### The following variables are also substituted into the document if you 
### set up the input document to use them.  The full draft name is substituted
### into the rfc docName attribute if you set it to docName="DOCNAME"
###
###
### DRAFTNAME   = the name of the document: draft-ietf-next-great-standard
###               default: draft-$(shell whoami)-$(INPUT)
###
### VERSION 	 = the version number to generate at the end of the name.
###         	   Defaults to a '+' followed by the subversion revision,
###         	   so that it can be left out when working on drafts, then just
###         	   before you submit, run 'make VERSION=<nn>' to generate the 
###         	   versions to submit (these should probably be checked in).
###
### DAY         = default to the current date, but may be overridden 
### MONTH         These are substituted into the date element of the front
### YEAR          if it is set to '<date month="MONTH" day="DAY" year="YEAR" />'
###
###############################################################################

ifeq (,$(DRAFTNAME))
DRAFTNAME:=draft-$(shell whoami)-$(INPUT)
endif

ifeq (,$(VERSION))
SVN_VERSION:=$(shell svnversion . | sed s/:/_/ )
DOCNAME=$(DRAFTNAME)+$(SVN_VERSION)
else
DOCNAME=$(DRAFTNAME)-$(VERSION)
endif

ifeq ($(DOCNAME),$(INPUT))
	DOCNAME=OUTPUT-$(OUTNAME)
endif

OUTPUTS = \
	$(DOCNAME).txt \
	$(DOCNAME).html
# Not really a format I need any more
#	$(DOCNAME).nr

all: $(OUTPUTS)

MONTH?=$(shell date +%B)
DAY?=$(shell date +%d)
YEAR?=$(shell date +%Y)

$(DOCNAME).xml: $(INPUT) .FORCE
	perl -p \
		-e 'm/^<rfc / && s/docName="DOCNAME"/docName="$(DOCNAME)"/;' \
		-e 'm/<date / && s/month="MONTH"/month="$(MONTH)"/;' \
		-e 'm/<date / && s/day="DAY"/day="$(DAY)"/;' \
		-e 'm/<date / && s/year="YEAR"/year="$(YEAR)"/;' \
	$(INPUT) > $(DOCNAME).new
	diff $(DOCNAME).new $(DOCNAME).xml > /dev/null 2>&1 \
	&& rm -f $(DOCNAME).new \
	|| mv $(DOCNAME).new $(DOCNAME).xml

xmlcheck: $(DOCNAME).xml
	xsltproc --path $(XML2RFC_DIR)/rfc2629xslt rfc2629.xslt $< > /dev/null

txt: $(DOCNAME).txt
html: $(DOCNAME).html

clean:
	rm -f $(OUTPUTS) $(DOCNAME).xml

$(DOCNAME).txt: $(DOCNAME).xml
	$(XML2RFC_DIR)/xml2rfc.tcl $(DOCNAME).xml $@

$(DOCNAME).nr: $(DOCNAME).xml
	$(XML2RFC_DIR)/xml2rfc.tcl $(DOCNAME).xml $@

TOHTML?=xml2rfc

$(DOCNAME).html: $(DOCNAME).xml
ifeq ($(TOHTML),xml2rfc)
		$(XML2RFC_DIR)/xml2rfc.tcl $(DOCNAME).xml $@
else 
ifeq ($(TOHTML),xml2rfc)
	   xsltproc --path $(XML2RFC_DIR)/rfc2629xslt rfc2629.xslt $< > /dev/null
else
		@echo "Unknown TOHTML value '$(TOHTML)'; should be 'xml2rfc|xslt'"
endif
endif

##
## Escaping xml files
##
xml_entity_escape=perl -pe 's/&/&amp;/g; s/</&lt;/g; s/>/&gt;/g; s/\"/&quot;/g;'

%.esc: %.xsd
	$(xml_entity_escape) < $< > $@

%.esc: %.xml
	$(xml_entity_escape) < $< > $@

PHONY: .FORCE
.FORCE: