libcruft-util/posix/dir.hpp
Danny Robson f6056153e3 rename root namespace from util to cruft
This places, at long last, the core library code into the same namespace
as the extended library code.
2018-08-05 14:42:02 +10:00

53 lines
1.2 KiB
C++

/*
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/.
*
* Copyright 2015 Danny Robson <danny@nerdcruft.net>
*/
#ifndef __UTIL_POSIX_DIR_HPP
#define __UTIL_POSIX_DIR_HPP
#include "except.hpp"
#include <cerrno>
#include <dirent.h>
#include <functional>
#include <experimental/filesystem>
namespace cruft::posix {
struct dir {
public:
explicit dir (const std::experimental::filesystem::path&);
~dir ();
operator DIR* (void);
// run a callback for each entry in the provided directory
template <typename FunctionT, typename ...Args>
void
scan (FunctionT &&func, Args&&...args)
{
rewind ();
for (dirent *cursor; errno = 0, cursor = readdir (m_handle); )
func (cursor->d_name, args...);
error::try_code ();
}
//entry begin (void) { rewind (); return { readdir (m_handle), m_handle }; }
//entry end (void) { return { nullptr, m_handle }; }
void rewind (void);
private:
DIR *m_handle;
};
}
#endif