php to c++: working with a filesystem
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This section covers the C++ equivalest of more or less the php function in the File System Related Extensions / Filesystem:
http://php.net/manual/en/book.filesystem.php
What is the C++ equivalent of the following PHP functions?
is_dir()
<pre>
#include <boost/filesystem/operations.hpp>
#include "boost/filesystem/path.hpp"
#include <iostream>
namespace fs = boost::filesystem;
using std::cout;
int main( int argc, char *argv[]) {
if (argc < 2) {
cout << "\nUsage: run.is_dir [path] \n\n";
return 1;
}
if (fs::is_directory(argv[1]))
//if (fs::is_directory("/usr"))
cout << "OK\n";
else
cout << "Not ok!\n";
return 0;
}
</pre>is_readable()
1) POSIX (Linux) solution: use the function access().
See man 2 access (have the manpages-dev package installed).
2) Cross-platform solution: try to open the file for reading (with std::ifstream) and see if you get an error message. Or for directories, use boost::filesystem::directory_iterator.