/* Copyright (c) 2013-2014 Jeffrey Pfau
 *
 * 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/. */
#include "VFileDevice.h"

#include <mgba-util/vfs.h>

using namespace QGBA;

VFileDevice::VFileDevice(VFile* vf, QObject* parent)
	: QIODevice(parent)
	, m_vf(vf)
{
	// TODO: Correct mode
	if (vf) {
		setOpenMode(QIODevice::ReadWrite);
	}
}

void VFileDevice::close() {
	if (!m_vf) {
		return;
	}
	QIODevice::close();
	m_vf->close(m_vf);
	m_vf = nullptr;
}

bool VFileDevice::resize(qint64 sz) {
	m_vf->truncate(m_vf, sz);
	return true;
}

bool VFileDevice::seek(qint64 pos) {
	QIODevice::seek(pos);
	return m_vf->seek(m_vf, pos, SEEK_SET) == pos;
}

VFileDevice& VFileDevice::operator=(VFile* vf) {
	close();
	m_vf = vf;
	setOpenMode(QIODevice::ReadWrite);
	return *this;
}

qint64 VFileDevice::readData(char* data, qint64 maxSize) {
	return m_vf->read(m_vf, data, maxSize);
}

qint64 VFileDevice::writeData(const char* data, qint64 maxSize) {
	return m_vf->write(m_vf, data, maxSize);
}

qint64 VFileDevice::size() const {
	return m_vf->size(m_vf);
}

VFile* VFileDevice::open(const QString& path, int mode) {
	return VFileOpen(path.toUtf8().constData(), mode);
}

VDir* VFileDevice::openDir(const QString& path) {
	return VDirOpen(path.toUtf8().constData());
}
VDir* VFileDevice::openArchive(const QString& path) {
	return VDirOpenArchive(path.toUtf8().constData());
}