20e2318b9f
Since v3.13, CMake has supported math(... OUTPUT_FORMAT <format>) and 0x prefixes on numbers, which together provides the same functionality as to_hex() and from_hex() that we've previously maintained. Users should switch to using math() instead, and our functions are now marked as deprecated. Signed-off-by: Attie Grande <attie.grande@argentum-systems.co.uk>
65 lines
1.9 KiB
CMake
65 lines
1.9 KiB
CMake
# SPDX-License-Identifier: Apache-2.0
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# This code was deprecated after Zephyr v3.5.0
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message(DEPRECATION "The to_hex() and from_hex() functions are deprecated. Please "
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"use CMake's math(... OUTPUT_FORMAT <format>) instead.")
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# from https://gist.github.com/korzo89/71a6de0f388f7cf8b349101b0134060c
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function(from_hex HEX DEC)
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string(SUBSTRING "${HEX}" 2 -1 HEX)
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string(TOUPPER "${HEX}" HEX)
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set(_res 0)
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string(LENGTH "${HEX}" _strlen)
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while(_strlen GREATER 0)
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math(EXPR _res "${_res} * 16")
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string(SUBSTRING "${HEX}" 0 1 NIBBLE)
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string(SUBSTRING "${HEX}" 1 -1 HEX)
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if(NIBBLE STREQUAL "A")
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math(EXPR _res "${_res} + 10")
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elseif(NIBBLE STREQUAL "B")
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math(EXPR _res "${_res} + 11")
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elseif(NIBBLE STREQUAL "C")
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math(EXPR _res "${_res} + 12")
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elseif(NIBBLE STREQUAL "D")
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math(EXPR _res "${_res} + 13")
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elseif(NIBBLE STREQUAL "E")
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math(EXPR _res "${_res} + 14")
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elseif(NIBBLE STREQUAL "F")
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math(EXPR _res "${_res} + 15")
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else()
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math(EXPR _res "${_res} + ${NIBBLE}")
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endif()
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string(LENGTH "${HEX}" _strlen)
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endwhile()
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set(${DEC} ${_res} PARENT_SCOPE)
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endfunction()
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function(to_hex DEC HEX)
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if(DEC EQUAL 0)
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set(${HEX} "0x0" PARENT_SCOPE)
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return()
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endif()
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while(DEC GREATER 0)
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math(EXPR _val "${DEC} % 16")
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math(EXPR DEC "${DEC} / 16")
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if(_val EQUAL 10)
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set(_val "A")
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elseif(_val EQUAL 11)
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set(_val "B")
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elseif(_val EQUAL 12)
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set(_val "C")
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elseif(_val EQUAL 13)
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set(_val "D")
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elseif(_val EQUAL 14)
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set(_val "E")
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elseif(_val EQUAL 15)
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set(_val "F")
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endif()
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set(_res "${_val}${_res}")
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endwhile()
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set(${HEX} "0x${_res}" PARENT_SCOPE)
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endfunction()
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