// Device.cpp
// Device object for use in devfs
// Author: Josh Holtrop
// Date: 06/03/04
// Modified: 06/09/04

#include "Device.h"
#include "DeviceFolder.h"
#include "hos_defines.h"
#include "lang/string.h"


Device::Device()
{
	major = minor = permissions = type = 0;
}

Device::Device(string aname)
{
	major = minor = permissions = type = 0;
	name = aname;
}

//Types:
// l = link, call setLink()
// d = directory, automatically initializes a new DeviceFolder object
// b = block device
// c = char device
Device::Device(string aname, dword amajor, dword aminor, char atype, word apermissions)
{
	name = aname;
	permissions = apermissions;
	type = atype;
	switch (type)
	{
	case 'd':
		folder = new DeviceFolder();
		break;
	case 'l':
		break;
	case 'b':
	case 'c':
		major = amajor;
		minor = aminor;
		break;
	}
}
	
Device::~Device()
{
	switch (type)
	{
	case 'l':
		delete link;
		break;
	case 'd':
		delete (DeviceFolder *)folder;
		break;
	}
}

Device::Device(const Device & orig)
{
	name = orig.name;
	permissions = orig.permissions;
	type = orig.type;
	switch (type)
	{
	case 'b':
	case 'c':
	default:
		major = orig.major;
		minor = orig.minor;
		break;
	case 'l':
		link = new string(*orig.link);
		break;
	case 'd':
		folder = new DeviceFolder(*(DeviceFolder *)orig.folder);
		break;
	}
}

Device & Device::operator=(const Device & orig)
{
	if (&orig != this)
	{
		this->~Device();
		name = orig.name;
		permissions = orig.permissions;
		type = orig.type;
		switch (type)
		{
		case 'b':
		case 'c':
		default:
			major = orig.major;
			minor = orig.minor;
			break;
		case 'l':
			link = new string(*orig.link);
			break;
		case 'd':
			folder = new DeviceFolder(*(DeviceFolder *)orig.folder);
			break;
		}
	}
	return *this;
}

void Device::setLink(string alink)
{
	if (type == 'l')
		link = new string(alink);
}