libcruft-util/posix/dir.hpp

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/*
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* 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/.
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*
* Copyright 2015 Danny Robson <danny@nerdcruft.net>
*/
#ifndef __UTIL_POSIX_DIR_HPP
#define __UTIL_POSIX_DIR_HPP
#include "except.hpp"
#include <cerrno>
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#include <dirent.h>
#include <functional>
#include <filesystem>
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namespace cruft::posix {
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struct dir {
public:
explicit dir (const std::filesystem::path&);
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~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 ();
}
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//entry begin (void) { rewind (); return { readdir (m_handle), m_handle }; }
//entry end (void) { return { nullptr, m_handle }; }
void rewind (void);
private:
DIR *m_handle;
};
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}
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#endif