95 lines
2.2 KiB
CMake
95 lines
2.2 KiB
CMake
#
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# Use 'cmake -Dfilename=${tar_or_tgz_file} -Dtmp=${tmp_directory} -Ddirectory=${final_directory}
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# -P UntarFile.cmake' to call this script...
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#
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if(NOT DEFINED filename)
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message(FATAL_ERROR "error: required variable 'filename' not defined...")
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endif()
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if(NOT DEFINED tmp)
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message(FATAL_ERROR "error: required variable 'tmp' not defined...")
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endif()
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if(NOT DEFINED directory)
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message(FATAL_ERROR "error: required variable 'directory' not defined...")
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endif()
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if(NOT DEFINED args)
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if(filename MATCHES ".tar$")
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set(args xf)
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endif()
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if(filename MATCHES ".tgz$")
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set(args xfz)
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endif()
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if(filename MATCHES ".tar.gz$")
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set(args xfz)
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endif()
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endif()
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# Make file names absolute:
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#
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get_filename_component(filename "${filename}" ABSOLUTE)
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get_filename_component(tmp "${tmp}" ABSOLUTE)
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get_filename_component(directory "${directory}" ABSOLUTE)
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# Prepare a space for untarring:
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#
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#message(STATUS "info: creating empty subdir of '${tmp}'...")
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set(i 1)
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while(EXISTS "${tmp}/untar${i}")
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math(EXPR i "${i} + 1")
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endwhile()
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set(ut_dir "${tmp}/untar${i}")
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file(MAKE_DIRECTORY "${ut_dir}")
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# Untar it:
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#
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#message(STATUS "info: untarring '${filename}' in '${ut_dir}' with '${args}'...")
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execute_process(COMMAND ${CMAKE_COMMAND} -E tar ${args} ${filename}
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WORKING_DIRECTORY ${ut_dir}
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RESULT_VARIABLE rv)
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if(NOT rv EQUAL 0)
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message(FATAL_ERROR "error: untar of '${filename}' failed")
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endif()
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# Analyze what came out of the tar file:
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#
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file(GLOB contents "${ut_dir}/*")
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set(is_one_directory 0)
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list(LENGTH contents n)
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if(n EQUAL 1)
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if(IS_DIRECTORY "${contents}")
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set(is_one_directory 1)
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endif()
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endif()
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# Copy "the one" directory to the final directory:
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#
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if(is_one_directory EQUAL 1)
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#message(STATUS "info: (1) copying '${contents}' to '${directory}'...")
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execute_process(COMMAND ${CMAKE_COMMAND} -E copy_directory "${contents}" "${directory}"
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RESULT_VARIABLE rv)
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else()
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#message(STATUS "info: (more) copying '${ut_dir}' to '${directory}'...")
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execute_process(COMMAND ${CMAKE_COMMAND} -E copy_directory "${ut_dir}" "${directory}"
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RESULT_VARIABLE rv)
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endif()
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if(NOT rv EQUAL 0)
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message(FATAL_ERROR "error: copy_directory failed after untar in '${ut_dir}'")
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endif()
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# Clean up:
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#
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file(REMOVE_RECURSE "${ut_dir}")
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