I am trying to replace forwardslashes with backslashes. To do that i have the following line of code:
STRING(REGEX REPLACE "/" "\\" SourceGroup ${SourceGroupPath} )
SourceGroupPath = A/File/Path. SourceGroup is the variable to set the result to.
The problem i am having is with, the "\\\\" part to the code. I have tried several ways to getting to use the backslash literal like "\\\\" and using unicode but nothing seems to work.
The error i get in CMake is:
CMake Error at CMakeLists.txt:41 (STRING): string sub-command REGEX, mode REPLACE: replace-expression ends in a backslash.
Can someone please help me out?
Thanks,
Wouter
The reason is that in a CMake string literal, the backslash is an escape character (just like in C, Java or JavaScript) and in regex, the backslash is an escape character as well .
So to represent a regex as a string literal, you need double escaping. (That's why many "higher level" languages have regex literal notation, BTW.)
The string literal "\\\\"
represents the in-memory string "\\"
and that's an invalid regex, hence the "ends in a backslash" error.
The string literal "\\\\\\\\"
represents "\\\\"
in memory which is a valid regex (representing a single backslash).
这是一种更简单的方法:
file(TO_NATIVE_PATH ${MYPATH} MYPATH)
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