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When doing successive matches, track the input start and current search start positions separately to prevent the `^` anchor from matching in the middle of the string. Add policy CMP0186 to provide compatibility. Issue: #26629 Fixes: #16899
91 lines
2.1 KiB
CMake
91 lines
2.1 KiB
CMake
function(check_output name expected)
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set(output "${${name}}")
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if(NOT output STREQUAL expected)
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message(FATAL_ERROR "\"string(REGEX)\" set ${name} to \"${output}\", expected \"${expected}\"")
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endif()
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endfunction()
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# OLD
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cmake_policy(SET CMP0186 OLD)
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string(REGEX MATCHALL "^0" out "0000")
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check_output(out "0;0;0;0")
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string(REGEX MATCHALL "^0+" out "0000")
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check_output(out "0000")
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string(REGEX MATCHALL "^(0|a)" out "0000" )
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check_output(out "0;0;0;0")
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string(REGEX MATCHALL "^(0|a)" out "aaaa")
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check_output(out "a;a;a;a")
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string(REGEX MATCHALL "^(0|a)" out "a0a0")
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check_output(out "a;0;a;0")
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string(REGEX MATCHALL "(^|a)0" out "00a0")
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check_output(out "0;0;a0")
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string(REGEX REPLACE "^0" "" out "0000")
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check_output(out "")
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string(REGEX REPLACE "^0" "x" out "0000")
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check_output(out "xxxx")
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string(REGEX REPLACE "^0+" "x" out "0000")
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check_output(out "x")
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string(REGEX REPLACE "^(0|a)" "x" out "0000")
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check_output(out "xxxx")
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string(REGEX REPLACE "^(0|a)" "x" out "aaaa")
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check_output(out "xxxx")
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string(REGEX REPLACE "^(0|a)" "x" out "a0a0")
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check_output(out "xxxx")
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string(REGEX REPLACE "(^|a)0" "x" out "00a0")
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check_output(out "xxx")
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# NEW, same cases as above
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cmake_policy(SET CMP0186 NEW)
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string(REGEX MATCHALL "^0" out "0000")
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check_output(out "0")
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string(REGEX MATCHALL "^0+" out "0000")
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check_output(out "0000")
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string(REGEX MATCHALL "^(0|a)" out "0000")
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check_output(out "0")
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string(REGEX MATCHALL "^(0|a)" out "aaaa")
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check_output(out "a")
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string(REGEX MATCHALL "^(0|a)" out "a0a0")
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check_output(out "a")
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string(REGEX MATCHALL "(^|a)0" out "00a0")
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check_output(out "0;a0")
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string(REGEX REPLACE "^0" "" out "0000")
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check_output(out "000")
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string(REGEX REPLACE "^0" "x" out "0000")
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check_output(out "x000")
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string(REGEX REPLACE "^0+" "x" out "0000")
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check_output(out "x")
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string(REGEX REPLACE "^(0|a)" "x" out "0000")
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check_output(out "x000")
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string(REGEX REPLACE "^(0|a)" "x" out "aaaa")
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check_output(out "xaaa")
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string(REGEX REPLACE "^(0|a)" "x" out "a0a0")
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check_output(out "x0a0")
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string(REGEX REPLACE "(^|a)0" "x" out "00a0")
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check_output(out "x0x")
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