std::filesystem::recursive_directory_iterator::disable_recursion_pending
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
#include <cstdlib>
#include <fstream>
#include <iostream>
#include <string>
#include <filesystem>
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) |
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