mirror of
https://github.com/libretro/scummvm.git
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145 lines
3.4 KiB
C++
145 lines
3.4 KiB
C++
/* ScummVM - Graphic Adventure Engine
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*
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* ScummVM is the legal property of its developers, whose names
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* are too numerous to list here. Please refer to the COPYRIGHT
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* file distributed with this source distribution.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*
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*/
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/*
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* This code is based on Broken Sword 2.5 engine
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*
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* Copyright (c) Malte Thiesen, Daniel Queteschiner and Michael Elsdoerfer
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*
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* Licensed under GNU GPL v2
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*
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*/
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#include "common/textconsole.h"
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#include "sword25/kernel/inputpersistenceblock.h"
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namespace Sword25 {
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InputPersistenceBlock::InputPersistenceBlock(const void *data, uint dataLength, int version) :
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_data(static_cast<const byte *>(data), dataLength),
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_errorState(NONE),
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_version(version) {
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_iter = _data.begin();
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}
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InputPersistenceBlock::~InputPersistenceBlock() {
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if (_iter != _data.end())
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warning("Persistence block was not read to the end.");
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}
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void InputPersistenceBlock::read(int16 &value) {
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signed int v;
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read(v);
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value = static_cast<int16>(v);
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}
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void InputPersistenceBlock::read(signed int &value) {
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if (checkMarker(SINT_MARKER)) {
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value = (int32)READ_LE_UINT32(_iter);
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_iter += 4;
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} else {
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value = 0;
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}
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}
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void InputPersistenceBlock::read(uint &value) {
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if (checkMarker(UINT_MARKER)) {
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value = READ_LE_UINT32(_iter);
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_iter += 4;
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} else {
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value = 0;
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}
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}
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void InputPersistenceBlock::read(float &value) {
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if (checkMarker(FLOAT_MARKER)) {
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uint32 tmp[1];
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tmp[0] = READ_LE_UINT32(_iter);
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value = ((float *)tmp)[0];
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_iter += 4;
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} else {
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value = 0.0f;
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}
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}
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void InputPersistenceBlock::read(bool &value) {
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if (checkMarker(BOOL_MARKER)) {
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uint uintBool = READ_LE_UINT32(_iter);
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_iter += 4;
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value = uintBool != 0;
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} else {
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value = false;
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}
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}
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void InputPersistenceBlock::readString(Common::String &value) {
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value = "";
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if (checkMarker(STRING_MARKER)) {
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uint size;
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read(size);
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if (checkBlockSize(size)) {
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value = Common::String(reinterpret_cast<const char *>(&*_iter), size);
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_iter += size;
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}
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}
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}
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void InputPersistenceBlock::readByteArray(Common::Array<byte> &value) {
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if (checkMarker(BLOCK_MARKER)) {
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uint size;
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read(size);
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if (checkBlockSize(size)) {
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value = Common::Array<byte>(_iter, size);
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_iter += size;
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}
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}
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}
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bool InputPersistenceBlock::checkBlockSize(int size) {
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if (_data.end() - _iter >= size) {
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return true;
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} else {
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_errorState = END_OF_DATA;
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error("Unexpected end of persistence block.");
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return false;
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}
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}
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bool InputPersistenceBlock::checkMarker(byte marker) {
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if (!isGood() || !checkBlockSize(1))
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return false;
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if (*_iter++ == marker) {
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return true;
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} else {
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_errorState = OUT_OF_SYNC;
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error("Wrong type marker found in persistence block.");
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return false;
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}
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}
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} // End of namespace Sword25
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