dnl Copyright (c) 2018-2020 Petr Vorel <pvorel@suse.cz>

dnl Find docbook manpage stylesheet

AC_DEFUN([EVMCTL_MANPAGE_DOCBOOK_XSL], [

	DOCBOOK_XSL_URI="http://docbook.sourceforge.net/release/xsl/current"

	DOCBOOK_XSL_PATH="manpages/docbook.xsl"

	AC_PATH_PROGS(XMLCATALOG, xmlcatalog)

	AC_ARG_WITH([xml-catalog],

		AC_HELP_STRING([--with-xml-catalog=CATALOG],

				[path to xml catalog to use]),,

				[with_xml_catalog=/etc/xml/catalog])

	XML_CATALOG_FILE="$with_xml_catalog"

	AC_SUBST([XML_CATALOG_FILE])

	if test "x${XMLCATALOG}" = "x"; then

		AC_MSG_WARN([xmlcatalog not found, cannot search for $DOCBOOK_XSL_PATH])

	else

		AC_MSG_CHECKING([for XML catalog ($XML_CATALOG_FILE)])

		if test -f "$XML_CATALOG_FILE"; then

			have_xmlcatalog_file=yes

			AC_MSG_RESULT([found])

		else

			AC_MSG_RESULT([not found, cannot search for $DOCBOOK_XSL_PATH])

		fi

	fi

	if test "x${XMLCATALOG}" != "x" -a "x$have_xmlcatalog_file" = "xyes"; then

		MANPAGE_DOCBOOK_XSL=$(${XMLCATALOG} ${XML_CATALOG_FILE} ${DOCBOOK_XSL_URI}/${DOCBOOK_XSL_PATH} | sed 's|^file:/\+|/|')

	fi

	if test "x${MANPAGE_DOCBOOK_XSL}" = "x"; then

		MANPAGE_DOCBOOK_XSL="/usr/share/xml/docbook/stylesheet/docbook-xsl/manpages/docbook.xsl"

		AC_MSG_WARN([trying a default path for $DOCBOOK_XSL_PATH])

	fi

	if test -f "$MANPAGE_DOCBOOK_XSL"; then

		have_doc=yes

		AC_MSG_NOTICE([using $MANPAGE_DOCBOOK_XSL for generating doc])

	else

		AC_MSG_WARN([$DOCBOOK_XSL_PATH not found, generating doc will be skipped])

		MANPAGE_DOCBOOK_XSL=

		have_doc=no

	fi

	AM_CONDITIONAL(MANPAGE_DOCBOOK_XSL, test "x$have_doc" = xyes)

	AC_SUBST(MANPAGE_DOCBOOK_XSL)

])