boost filesystem

Reply to boost filesystem on Thu, 18 Jan 2007 21:09:48 GMT

cpp1 — Thu, 18 Jan 2007 21:09:48 GMT

wie kann ich mit boost filesystem eine filesystem struktur - baum erzeugen?
bis zu einer tiefe von 5, mit jeweils 4 aesten...

zb     \Projects\root 
                          /  \     \   \
                         /    \     \   \
                        /      \     \    foo_14
                      foo_11 foo_12 foo_13
                      / \ 
                     /   \
                    /     \
                  foo_21
                  /
                 /
                /
              foo_31

Reply to boost filesystem on Thu, 18 Jan 2007 21:21:12 GMT

cpp1 — Thu, 18 Jan 2007 21:21:12 GMT

ich hab probleme mit der rekusion...scheint ne endlosschleife zu sein...

void createDirectory(const string &dir_name)
{
	fs::path dir_path(dir_name, fs::native);
	cout << "createDirectory " << dir_path.string() << endl;
	fs::create_directory( dir_path );
}
int createTree(const string &path_current)
{
	static int depth_curr = 0;

	depth_curr++;

	if(depth_curr < 5) {
		for(unsigned int i = 0; i < 4; i++) {
			createDirectory(path_current + "/foo");
		}

		typedef fs::directory_iterator dit; 
		dit di_end; 

		for (dit it = dit(p); it != di_end; ++it) {
			// subdirectory
			if( fs::is_directory( *it ) ) {
				createTree( (*it).string() );
			}
		}
	}
	else {
		return depth_curr--;
	}
}

Reply to boost filesystem on Thu, 18 Jan 2007 21:37:12 GMT

cpp1 — Thu, 18 Jan 2007 21:37:12 GMT

void createDirectory(const string &dir_name)
	{
		fs::path dir_path(dir_name, fs::native);
		cout << "createDirectory " << dir_path.string() << endl;
		fs::create_directory( dir_path );
	}
	int createTree(const string &path_current)
	{
		static int depth_curr = 0;

		depth_curr++;

		if(depth_curr < 6) {
			for(unsigned int i = 0; i < 5; i++) {
				stringstream s;
				s << i;
				createDirectory(path_current + "/foo" + s.str());
			}

			typedef fs::directory_iterator dit; 
			dit di_end; 
			fs::path p(path_current, fs::native);

			for (dit it = dit(p); it != di_end; ++it) {
				// subdirectory
				if( fs::is_directory( *it ) ) {
					depth_curr = createTree( (*it).string() );
				}
			}
		}
		else {
			return depth_curr--;
		}
	}

folgender code erstellt mir nur folgende struktur:

createDirectory c:/test_dir/foo1
createDirectory c:/test_dir/foo2
createDirectory c:/test_dir/foo3
createDirectory c:/test_dir/foo4
createDirectory c:/test_dir/foo0/foo0
createDirectory c:/test_dir/foo0/foo1
createDirectory c:/test_dir/foo0/foo2
createDirectory c:/test_dir/foo0/foo3
createDirectory c:/test_dir/foo0/foo4
createDirectory c:/test_dir/foo0/foo0/foo0
createDirectory c:/test_dir/foo0/foo0/foo1
createDirectory c:/test_dir/foo0/foo0/foo2
createDirectory c:/test_dir/foo0/foo0/foo3
createDirectory c:/test_dir/foo0/foo0/foo4
createDirectory c:/test_dir/foo0/foo0/foo0/foo0
createDirectory c:/test_dir/foo0/foo0/foo0/foo1
createDirectory c:/test_dir/foo0/foo0/foo0/foo2
createDirectory c:/test_dir/foo0/foo0/foo0/foo3
createDirectory c:/test_dir/foo0/foo0/foo0/foo4
createDirectory c:/test_dir/foo0/foo0/foo0/foo0/foo0
createDirectory c:/test_dir/foo0/foo0/foo0/foo0/foo1
createDirectory c:/test_dir/foo0/foo0/foo0/foo0/foo2
createDirectory c:/test_dir/foo0/foo0/foo0/foo0/foo3
createDirectory c:/test_dir/foo0/foo0/foo0/foo0/foo4

Reply to boost filesystem on Thu, 18 Jan 2007 22:20:09 GMT

hustbaer — Thu, 18 Jan 2007 22:20:09 GMT

Ersetze doch bitte "depth_curr" duch ein Parameter, dann sollte auch automatisch der dumme Fehler (du decrementierst depth_curr nicht wenn du den "if" Zweig nimmst) verschwinden.

Also so inetwa...

void foo(int levels_to_recurse)
{
    make_foo_stuff();
    if(levels_to_recurse > 0)
        foo(levels_to_recurse - 1);
}