How to increase portability of 7z.exe [closed] - c++

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I am working on a program that needs to unzip .zip files. After trying several different methods to do this, the only one I could find that worked for all my needs is 7z.exe. It works great as I'm developing since I can just hardcode the location of the executable into the code. However, if anyone else tries to use it, that part won't work. Is there any way to allow them to access this? Thanks!

Answer 1

I suggest you use a compression library (have a look at libarchive: http://www.libarchive.org). If you can't do that, you should ship 7z.exe and its dependencies with your application, putting them in a fixed relative location to your main executable.
Then you get your main executable absolute path using GetModuleFileName, strip and combine with the relative path using PathCchCombine:
char filename[MAX_PATH];
GetModuleFileName(NULL,filename,(sizeof(filename))/(sizeof char));
PathCchRemoveFileSpec(filename,(sizeof(filename))/(sizeof char));
PathCchCombine(filename,(sizeof(filename))/(sizeof char),filename,"./7zip/7zip.exe");
//the absolute path of 7z.exe is now in filename
Documentation for GetModuleFileName:
http://msdn.microsoft.com/en-us/library/windows/desktop/ms683197(v=vs.85).aspx
PathCchRemoveFileSpec:
http://msdn.microsoft.com/en-us/library/hh707092(v=vs.85).aspx
and for PathCchCombine:
http://msdn.microsoft.com/en-us/library/hh707085(v=vs.85).aspx