[SOLVED] After Reading a *.lst file(multiple lines with different filenames along with its path),How to find specific filename with its path in CMAKE?

Issue

Lets Consider a lst file "txt_filelist.lst" which has different text files mentioned with different path's, Now After reading the "txt_filelist.lst" file how to identify a specific text file along with its path in CMAKE?

txt_filelist.lst File:

variants\EXX\application\a2l\target_ecu\srcxx_xx_xx\CRCa2lCfgEXX_srcxx_xx_xx.txt
variants\EXX\application\a2l\target_src\srcxx_xx_xx\CRCa2lCfgEXX_srcxx_xx_xx_1.txt
variants\EXX\application\a2l\target\srcxx_xx_xx\CRCa2lCfgEXX_srcxx_xx_xx_2.txt
variants\EXX\application\a2l\target_base\srcxx_xx_xx\CRCa2lCfgEXX_srcxx_xx_xx_3.txt

After reading the lst file txt_filelist.lst How can I first identify the CRCa2lCfgEXX_srcxx_xx_xx.txt in the lst and then secondly How can I fetch its entire path as variants\EXX\application\a2l\target_ecu\srcxx_xx_xx\CRCa2lCfgEXX_srcxx_xx_xx.txt in CMAKE?

Thanks in Advance..!!!

Solution

You can use file(STRINGS) to read the lines of the file to a list variable. get_filename_component can be used to separate file names according to your needs. Using file(TO_NATIVE_PATH) may be necessary, if you use get_filename_component in a way that yields a path containing separators, but most tools should be able to work with forward slashes, even on Windows:

file(STRINGS txt_filelist.lst FILE_LINES LENGTH_MINIMUM 1)

message("=========================")
foreach(LINE IN LISTS FILE_LINES)
    get_filename_component(FILE_NAME "${LINE}" NAME)
    get_filename_component(FILE_DIR "${LINE}" DIRECTORY)
    file(TO_NATIVE_PATH "${LINE}" FILE_PATH_NATIVE)
    message(
"------------------------
LINE             = '${LINE}'
FILE_NAME        = '${FILE_NAME}'   
FILE_DIR         = '${FILE_DIR}'    
FILE_PATH_NATIVE = '${FILE_PATH_NATIVE}'    
"
    )
endforeach()
message("=========================")

Note: The LENGTH_MINIMUM 1 option is there to ignore empty lines. This may not be necessary depending on the input you get.

Answered By - fabian

Answer Checked By - Cary Denson (WPSolving Admin)