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# Try to find DocBook XSL stylesheet
# Once done, it will define:
#
#  DocBookXSL_FOUND - system has the required DocBook XML DTDs
#  DocBookXSL_DIR - the directory containing the stylesheets
#  used to process DocBook XML

# Copyright (c) 2010, Luigi Toscano, <luigi.toscano@tiscali.it>
#
# Redistribution and use is allowed according to the terms of the BSD license.
# For details see the accompanying COPYING-CMAKE-SCRIPTS file.

set (STYLESHEET_PATH_LIST
    share/xml/docbook/stylesheet/docbook-xsl
    share/xml/docbook/xsl-stylesheets
    share/sgml/docbook/xsl-stylesheets
    share/xml/docbook/stylesheet/nwalsh/current
    share/xml/docbook/stylesheet/nwalsh
    share/xsl/docbook
    share/xsl/docbook-xsl
)

find_path (DocBookXSL_DIR lib/lib.xsl
    PATHS ${CMAKE_SYSTEM_PREFIX_PATH}
    PATH_SUFFIXES ${STYLESHEET_PATH_LIST}
)

if (NOT DocBookXSL_DIR)
    # hacks for systems that put the version in the stylesheet dirs
    set (STYLESHEET_PATH_LIST)
    foreach (STYLESHEET_PREFIX_ITER ${CMAKE_SYSTEM_PREFIX_PATH})
        file(GLOB STYLESHEET_SUFFIX_ITER RELATIVE ${STYLESHEET_PREFIX_ITER}
            ${STYLESHEET_PREFIX_ITER}/share/xml/docbook/xsl-stylesheets-*
        )
        if (STYLESHEET_SUFFIX_ITER)
            list (APPEND STYLESHEET_PATH_LIST ${STYLESHEET_SUFFIX_ITER})
        endif ()
    endforeach ()

    find_path (DocBookXSL_DIR VERSION
        PATHS ${CMAKE_SYSTEM_PREFIX_PATH}
        PATH_SUFFIXES ${STYLESHEET_PATH_LIST}
    )
endif ()


include(FindPackageHandleStandardArgs)
find_package_handle_standard_args (DocBookXSL
                                   "Could NOT find DocBook XSL stylesheets"
                                   DocBookXSL_DIR)

mark_as_advanced (DocBookXSL_DIR)