std::filesystem::recursive_directory_iterator::disable_recursion_pending
From cppreference.com
| void disable_recursion_pending(); |
(since C++17) | |
Disables recursion to the currently referred subdirectory, if any.
The call modifies the pending recursion flag on the iterator in such a way that the next time increment is called, the iterator will advance within the current directory even if it is currently referring to a subdirectory that hasn't been visited.
The status of the pending recursion flag can be queried with recursion_pending(), which is false after this call. It is reset back to true after increment, and its initial value is also true.
The behavior is undefined if *this is the end iterator.
Parameters
(none)
Return value
(none)
Exceptions
May throw implementation-defined exceptions.
Example
Run this code
#include <cstdlib> #include <filesystem> #include <fstream> #include <iostream> #include <string> namespace fs = std::filesystem; int main() { fs::current_path(fs::temp_directory_path()); fs::create_directories("sandbox/a/b/c"); fs::create_directories("sandbox/a/b/d/e"); std::ofstream("sandbox/a/b/file1.txt"); fs::create_symlink("a", "sandbox/syma"); std::system("tree sandbox"); for (auto i = fs::recursive_directory_iterator("sandbox"); i != fs::recursive_directory_iterator(); ++i) { std::cout << std::string(i.depth() * 2, ' ') << *i; if (fs::is_symlink(i->symlink_status())) std::cout << " -> " << fs::read_symlink(*i); std::cout << '\n'; // do not descend into "b" if (i->path().filename() == "b") i.disable_recursion_pending(); } fs::remove_all("sandbox"); }
Possible output:
sandbox ├── a │ └── b │ ├── c │ ├── d │ │ └── e │ └── file1.txt └── syma -> a "sandbox/a" "sandbox/a/b" "sandbox/syma" -> "a"
See also
| checks whether the recursion is disabled for the current directory (public member function) | |
| advances to the next entry (public member function) |