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