stdfilesystemcanonical

std::filesystem::canonical is a function provided by the C++ Standard Library's <filesystem> header. It returns the absolute path of a given file or directory, resolving any symbolic links, relative paths, or "." and ".." references.

Here's an example usage:

#include <iostream>
#include <filesystem>

int main() {
    std::filesystem::path path = "my_directory/../my_file.txt";
    std::filesystem::path canonicalPath = std::filesystem::canonical(path);

    std::cout << "Original path: " << path << std::endl;
    std::cout << "Canonical path: " << canonicalPath << std::endl;

    return 0;
}

Output:

Original path: my_directory/../my_file.txt
Canonical path: /path/to/my_file.txt

In this example, the original path contains a ".." reference to the parent directory, but std::filesystem::canonical resolves it to the absolute path of the file