Add FindNaturalDocs
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# - Find NaturalDocs
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# This module finds if NaturalDocs is installed, and adds it as an external
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# dependency if it isn't. This code sets the following variables:
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#
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# NATURALDOCS_EXECUTABLE = full path to the naturaldocs binary
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find_program(NATURALDOCS_EXECUTABLE NAMES naturaldocs NaturalDocs)
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if(NATURALDOCS_EXECUTABLE)
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execute_process(COMMAND ${NATURALDOCS_EXECUTABLE} --help
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RESULT_VARIABLE res
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OUTPUT_VARIABLE var
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ERROR_VARIABLE var
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OUTPUT_STRIP_TRAILING_WHITESPACE
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ERROR_STRIP_TRAILING_WHITESPACE)
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if(res)
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if(${NaturalDocs_FIND_REQUIRED})
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message(FATAL_ERROR "Error executing naturaldocs --help")
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elseif(NOT NaturalDocs_FIND_QUIETLY)
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message(WARNING "Warning, could not run naturaldocs --help")
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endif()
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else()
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if(var MATCHES ".*Natural Docs, version [0-9]+\\.[0-9]+.*")
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string(REGEX REPLACE ".*Natural Docs, version ([0-9]+\\.[0-9]+).*"
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"\\1" NATURALDOCS_VERSION_STRING "${var}")
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else()
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if(NOT NaturalDocs_FIND_QUIETLY)
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message(WARNING "regex not supported: {$var}.")
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endif()
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endif()
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string( REGEX REPLACE "([0-9]+).*" "\\1" NATURALDOCS_VERSION_MAJOR "${NATURALDOCS_VERSION_STRING}" )
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string( REGEX REPLACE "[0-9]+\\.([0-9]+)" "\\1" NATURALDOCS_VERSION_MINOR "${NATURALDOCS_VERSION_STRING}" )
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set(NATURALDOCS_VERSION ${NATURALDOCS_VERSION_MAJOR}.${NATURALDOCS_VERSION_MINOR})
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endif()
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endif()
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mark_as_advanced(
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NATURALDOCS_EXECUTABLE
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)
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include(FindPackageHandleStandardArgs)
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find_package_handle_standard_args(NaturalDocs
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REQUIRED_VARS NATURALDOCS_EXECUTABLE
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VERSION_VAR NATURALDOCS_VERSION)
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