如何获取程序运行的目录?

2022-01-30 00:00:00 c working-directory c++

是否有一种平台无关和文件系统无关的方法来获取使用 C/C++ 运行程序的目录的完整路径?不要与当前工作目录混淆.(请不要推荐库，除非它们是标准库，如 clib 或 STL.)

Is there a platform-agnostic and filesystem-agnostic method to obtain the full path of the directory from where a program is running using C/C++? Not to be confused with the current working directory. (Please don't suggest libraries unless they're standard ones like clib or STL.)

(如果没有与平台/文件系统无关的方法，也欢迎在 Windows 和 Linux 中针对特定文件系统工作的建议.)

(If there's no platform/filesystem-agnostic method, suggestions that work in Windows and Linux for specific filesystems are welcome too.)

推荐答案

获取执行应用的完整路径的代码如下:

Here's code to get the full path to the executing app:

窗户:

char pBuf[256];
size_t len = sizeof(pBuf); 
int bytes = GetModuleFileName(NULL, pBuf, len);
return bytes ? bytes : -1;

Linux:

int bytes = MIN(readlink("/proc/self/exe", pBuf, len), len - 1);
if(bytes >= 0)
    pBuf[bytes] = '';
return bytes;

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