sortix--sortix/sortix/directory.h

/******************************************************************************

	COPYRIGHT(C) JONAS 'SORTIE' TERMANSEN 2011.

	This file is part of Sortix.

	Sortix is free software: you can redistribute it and/or modify it under the
	terms of the GNU General Public License as published by the Free Software
	Foundation, either version 3 of the License, or (at your option) any later
	version.

	Sortix is distributed in the hope that it will be useful, but WITHOUT ANY
	WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
	FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
	details.

	You should have received a copy of the GNU General Public License along
	with Sortix. If not, see <http://www.gnu.org/licenses/>.

	directory.h
	A container for files and other directories.

******************************************************************************/

#ifndef SORTIX_DIRECTORY_H
#define SORTIX_DIRECTORY_H

#include "device.h"

namespace Sortix
{
	// Keep this up to date with <sys/readdirents.h>
	struct sortix_dirent
	{
		struct sortix_dirent* d_next;
		unsigned char d_type;
		size_t d_namelen;
		char d_name[];
	};

	class DevDirectory : public Device
	{
	public:
		typedef Device BaseClass;

	public:
		virtual void Rewind() = 0;

		// Precondition: available is at least sizeof(sortix_dirent).
		virtual int Read(sortix_dirent* dirent, size_t available) = 0;

	public:
		virtual bool IsType(unsigned type) { return type == Device::DIRECTORY; }

	};

	namespace Directory
	{
		void Init();
		char* MakeAbsolute(const char* wd, const char* rel);
	}
}

#endif