Re: [CMake] Check if a variable contains valid number
Am 2016-03-29 09:03, schrieb Lloyd: Hi, How can I check if the user supplied value is a valid positive integer or not? I have tried the following, but it is not entering the if condition, what might be wrong? Is there a better solution? SET(MY_NUMBER "100" CACHE STRING " Please enter the number") string(REGEX MATCH "^[1-9][0-9]*$" MY_NUMBER ${MY_NUMBER}) if(MY_NUMBER) #This area is not getting executed, whats wrong here endif() Have you tried this: if (MY_NUMBER MATCHES "^[0-9]+$") Greetings, Eike -- -- Powered by www.kitware.com Please keep messages on-topic and check the CMake FAQ at: http://www.cmake.org/Wiki/CMake_FAQ Kitware offers various services to support the CMake community. For more information on each offering, please visit: CMake Support: http://cmake.org/cmake/help/support.html CMake Consulting: http://cmake.org/cmake/help/consulting.html CMake Training Courses: http://cmake.org/cmake/help/training.html Visit other Kitware open-source projects at http://www.kitware.com/opensource/opensource.html Follow this link to subscribe/unsubscribe: http://public.kitware.com/mailman/listinfo/cmake
[CMake] Check if a variable contains valid number
Hi, How can I check if the user supplied value is a valid positive integer or not? I have tried the following, but it is not entering the if condition, what might be wrong? Is there a better solution? SET(MY_NUMBER "100" CACHE STRING " Please enter the number") string(REGEX MATCH "^[1-9][0-9]*$" MY_NUMBER ${MY_NUMBER}) if(MY_NUMBER) #This area is not getting executed, whats wrong here endif() Thanks, Lloyd -- Powered by www.kitware.com Please keep messages on-topic and check the CMake FAQ at: http://www.cmake.org/Wiki/CMake_FAQ Kitware offers various services to support the CMake community. For more information on each offering, please visit: CMake Support: http://cmake.org/cmake/help/support.html CMake Consulting: http://cmake.org/cmake/help/consulting.html CMake Training Courses: http://cmake.org/cmake/help/training.html Visit other Kitware open-source projects at http://www.kitware.com/opensource/opensource.html Follow this link to subscribe/unsubscribe: http://public.kitware.com/mailman/listinfo/cmake