# Checks the location of the XML Catalog

# Usage:

#   JH_PATH_XML_CATALOG([ACTION-IF-FOUND], [ACTION-IF-NOT-FOUND])

# Defines XMLCATALOG and XML_CATALOG_FILE substitutions

AC_DEFUN([JH_PATH_XML_CATALOG],

[

  # check for the presence of the XML catalog

  AC_ARG_WITH([xml-catalog],

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

                             [path to xml catalog to use]),,

              [with_xml_catalog=/etc/xml/catalog])

  jh_found_xmlcatalog=true

  XML_CATALOG_FILE="$with_xml_catalog"

  AC_SUBST([XML_CATALOG_FILE])

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

  if test -f "$XML_CATALOG_FILE"; then

    AC_MSG_RESULT([found])

  else

    jh_found_xmlcatalog=false

    AC_MSG_RESULT([not found])

  fi

  # check for the xmlcatalog program

  AC_PATH_PROG(XMLCATALOG, xmlcatalog, no)

  if test "x$XMLCATALOG" = xno; then

    jh_found_xmlcatalog=false

  fi

  if $jh_found_xmlcatalog; then

    ifelse([$1],,[:],[$1])

  else

    ifelse([$2],,[AC_MSG_ERROR([could not find XML catalog])],[$2])

  fi

])

# Checks if a particular URI appears in the XML catalog

# Usage:

#   JH_CHECK_XML_CATALOG(URI, [FRIENDLY-NAME], [ACTION-IF-FOUND], [ACTION-IF-NOT-FOUND])

AC_DEFUN([JH_CHECK_XML_CATALOG],

[

  AC_REQUIRE([JH_PATH_XML_CATALOG],[JH_PATH_XML_CATALOG(,[:])])dnl

  AC_MSG_CHECKING([for ifelse([$2],,[$1],[$2]) in XML catalog])

  if $jh_found_xmlcatalog && \

     AC_RUN_LOG([$XMLCATALOG --noout "$XML_CATALOG_FILE" "$1" >&2]); then

    AC_MSG_RESULT([found])

    ifelse([$3],,,[$3

])dnl

  else

    AC_MSG_RESULT([not found])

    ifelse([$4],,

       [AC_MSG_ERROR([could not find ifelse([$2],,[$1],[$2]) in XML catalog])],

       [$4])

  fi

])