How can I change the value of __FILE__?

This is a discussion on How can I change the value of __FILE__? within the C++ Programming forums, part of the General Programming Boards category; Hi, Currently (using VC++ 6.0) when I print out __FILE__ I get something like: Code: C:\blah\blah\blah\file.cpp but I'd like it ...

  1. #1
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    How can I change the value of __FILE__?

    Hi,
    Currently (using VC++ 6.0) when I print out __FILE__ I get something like:
    Code:
    C:\blah\blah\blah\file.cpp
    but I'd like it to display a relative file path which starts below the first directory:
    Code:
    \blah\blah\file.cpp
    Is that possible in VC++ 6.0? If so, how?

  2. #2
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    Quote Originally Posted by cpjust View Post
    Hi,
    Currently (using VC++ 6.0) when I print out __FILE__ I get something like:
    Code:
    C:\blah\blah\blah\file.cpp
    but I'd like it to display a relative file path which starts below the first directory:
    Code:
    \blah\blah\file.cpp
    Is that possible in VC++ 6.0? If so, how?
    Couldn't you just save the output from __FILE__ into a string and then backtrack through the string until you encounter the third backslash, then just throw away the rest?
    How I need a drink, alcoholic in nature, after the heavy lectures involving quantum mechanics.

  3. #3
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    7. It is easier to write an incorrect program than understand a correct one.
    40. There are two ways to write error-free programs; only the third one works.*

  4. #4
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    Yea, I'd say the chop suggested above would do;

    Code:
     //string getDrivePath {C:\blah\blah\blah\file.cpp}
     string::size_type loc= getDrivePath.find_first_of("\\");
     getDrivePath.erase(loc-1);

  5. #5
    and the hat of sweating
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    Quote Originally Posted by Neo1 View Post
    Couldn't you just save the output from __FILE__ into a string and then backtrack through the string until you encounter the third backslash, then just throw away the rest?
    That would make for a much less elegant solution and would require knowledge of the relative path position of each .cpp file so I would know where to chop it off.
    When I pull the files out of Visual Source Safe, I might put them into C:\VSS_root\ but someone else might put them into Z:\SomeStupidName\VSS\Root\

    Quote Originally Posted by Dave_Sinkula View Post
    I see absolute paths when I look at the properties for each file in File View (although I'm not sure why since every developer has their own VSS root directory on their machine). I'm guessing that's what I should turn into relative paths?

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