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string: Add REGEX QUOTE sub-command

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Add a command to generate a regular expression that matches an
input string literally by escaping special characters.

Fixes: #18580
This commit is contained in:
Timo Röhling
2025-09-17 22:26:55 +02:00
committed by Brad King
parent a3ccb05430
commit d94d79a909
4 changed files with 61 additions and 0 deletions
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13
Tests/StringFileTest/CMakeLists.txt
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@@ -115,6 +115,19 @@ if(NOT "${CMAKE_MATCH_2}" STREQUAL "")
message(SEND_ERROR "CMAKE_MATCH_2 wrong: \"${CMAKE_MATCH_2}\", expected empty string")
endif()
set(regex_quote "ab|c+12?3[x-z]$(y)\\t\\r\\n.cma*ke^[:alpha:]")
string(REGEX QUOTE regex_quote_output "${regex_quote}")
if(NOT regex_quote MATCHES "^${regex_quote_output}$")
message(SEND_ERROR "string(REGEX QUOTE) problem: \"${regex_quote}\" does not match against \"^${regex_quote_output}$\"")
endif()
string(REPLACE "." "a" nomatch_regex_quote "${regex_quote}")
if(nomatch_regex_quote MATCHES "^${regex_quote_output}$")
message(SEND_ERROR "string(REGEX QUOTE) problem: \"${nomatch_regex_quote}\" matches against \"^${regex_quote_output}$\"")
endif()
string(REGEX QUOTE multi_regex_quote ${regex_quote} ${regex_quote})
if(NOT "${regex_quote}${regex_quote}" MATCHES "^${multi_regex_quote}$")
message(SEND_ERROR "string(REGEX QUOTE) problem: \"${regex_quote}${regex_quote}\" does not match against \"^${multi_regex_quote}$\"")
endif()
string(STRIP "
ST1