1dnl Checks if a particular URI appears in the XML catalog
2dnl Usage:
3dnl	JH_CHECK_XML_CATALOG(URI, [FRIENDLY-NAME], [ACTION-IF-FOUND], [ACTION-IF-NOT-FOUND])
4AC_DEFUN([JH_CHECK_XML_CATALOG],
5[
6	AC_REQUIRE([JH_PATH_XML_CATALOG],[JH_PATH_XML_CATALOG(,[:])])dnl
7	AC_MSG_CHECKING([for ifelse([$2],,[$1],[$2]) in XML catalog])
8	if $jh_found_xmlcatalog && \
9		AC_RUN_LOG([$XMLCATALOG --noout "$XML_CATALOG_FILE" "$1" >&2]); then
10		AC_MSG_RESULT([found])
11		ifelse([$3],,,[$3])
12	else
13		AC_MSG_RESULT([not found])
14		ifelse([$4],,[AC_MSG_ERROR([could not find ifelse([$2],,[$1],[$2]) in XML catalog])],[$4])
15	fi
16])
17