[CMake] Problem with regular expression

[Michael Hertling]

On 07/15/2011 10:10 AM, Sven Klomp wrote:
> Hi,
> 
> I'm using cmake 2.8.3 and have a problem using regular expressions:
> 
> STRING(REGEX REPLACE
>       "^(Input:[0-9]+:)([^/].*)$"
>       "_Start_\\1_Middle_\\2_End_"
>       TESTVARIABLE
>       "Input:1:filename1 \nInput:104:filename2 \n"
>       )
> MESSAGE("${TESTVARIABLE}")
> 
> The expected output is:
> _Start_Input:1:_Middle_filename1_End_
> _Start_Input:104:_Middle_filename2_End_
> 
> However, the actual output is:
> _Start_Input:1:_Middle_filename1
> Input:104:filename2
> _End_
> 
> It seems that . matches also the newline, altough
> http://www.cmake.org/cmake/help/syntax.html
> says ist shouldn't!

Obviously, that's not true:

STRING(REGEX REPLACE "." "X" VAR "\n")
MESSAGE("VAR: ${VAR}")

yields:

VAR: X

> How can I get the expected result?

STRING(REGEX REPLACE
      "(Input:[0-9]+:)([^/][^\n]*)"
      "_Start_\\1_Middle_\\2_End_"
      TESTVARIABLE
      "Input:1:filename1 \nInput:104:filename2 \n"
      )

Regards,

Michael