Initial commit

engines/gob/save/saveload_geisha.cpp

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+/* ScummVM - Graphic Adventure Engine
+ *
+ * ScummVM is the legal property of its developers, whose names
+ * are too numerous to list here. Please refer to the COPYRIGHT
+ * file distributed with this source distribution.
+ *
+ * This program 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.
+ *
+ * This program 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 this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ *
+ * This file is dual-licensed.
+ * In addition to the GPLv3 license mentioned above, this code is also
+ * licensed under LGPL 2.1. See LICENSES/COPYING.LGPL file for the
+ * full text of the license.
+ *
+ */
+
+#include "gob/save/saveload.h"
+#include "gob/save/saveconverter.h"
+#include "gob/inter.h"
+#include "gob/variables.h"
+
+namespace Gob {
+
+SaveLoad_Geisha::SaveFile SaveLoad_Geisha::_saveFiles[] = {
+	{"save.inf", kSaveModeSave, nullptr, "savegame"},
+};
+
+
+SaveLoad_Geisha::GameHandler::File::File(GobEngine *vm, const Common::String &base) :
+	SlotFileIndexed(vm, SaveLoad_Geisha::kSlotCount, base, "s") {
+
+}
+
+SaveLoad_Geisha::GameHandler::File::~File() {
+}
+
+int SaveLoad_Geisha::GameHandler::File::getSlot(int32 offset) const {
+	return 0;
+}
+
+int SaveLoad_Geisha::GameHandler::File::getSlotRemainder(int32 offset) const {
+	return 0;
+}
+
+
+SaveLoad_Geisha::GameHandler::GameHandler(GobEngine *vm, const Common::String &target) :
+	SaveHandler(vm), _file(vm, target) {
+
+}
+
+SaveLoad_Geisha::GameHandler::~GameHandler() {
+}
+
+int32 SaveLoad_Geisha::GameHandler::getSize() {
+	if (_file.getSlotMax() == 0)
+		return -1;
+
+	return SaveLoad_Geisha::kSaveFileSize;
+}
+
+bool SaveLoad_Geisha::GameHandler::load(int16 dataVar, int32 size, int32 offset) {
+	if ((size != 0) || (offset != 0)) {
+		warning("Invalid loading procedure: %d, %d, %d", dataVar, size, offset);
+		return false;
+	}
+
+	memset(_vm->_inter->_variables->getAddressOff8(dataVar), 0, SaveLoad_Geisha::kSaveFileSize);
+
+	for (uint32 slot = 0; slot < SaveLoad_Geisha::kSlotCount;
+	     slot++, dataVar += SaveLoad_Geisha::kSlotSize) {
+
+		if (!_file.exists(slot))
+			continue;
+
+		Common::String slotFile = _file.build(slot);
+		if (slotFile.empty())
+			return false;
+
+		SaveReader reader(2, slot, slotFile);
+		if (!reader.load()) {
+			warning("Save slot %d contains corrupted save", slot);
+			continue;
+		}
+
+		SavePartInfo info(20, (uint32) _vm->getGameType(), 0,
+				_vm->getEndianness(), _vm->_inter->_variables->getSize());
+		SavePartVars vars(_vm, SaveLoad_Geisha::kSlotSize);
+
+		if (!reader.readPart(0, &info) || !reader.readPart(1, &vars)) {
+			warning("Save slot %d contains corrupted save", slot);
+			continue;
+		}
+
+			if (!vars.writeInto(dataVar, 0, SaveLoad_Geisha::kSlotSize)) {
+			warning("Save slot %d contains corrupted save", slot);
+			continue;
+		}
+	}
+
+	return true;
+}
+
+bool SaveLoad_Geisha::GameHandler::save(int16 dataVar, int32 size, int32 offset) {
+	if (((uint32)size != SaveLoad_Geisha::kSaveFileSize) || (offset != 0)) {
+		warning("Invalid saving procedure: %d, %d, %d", dataVar, size, offset);
+		return false;
+	}
+
+	for (uint32 slot = 0; slot < SaveLoad_Geisha::kSlotCount;
+	     slot++, dataVar += SaveLoad_Geisha::kSlotSize) {
+
+		const byte *slotData = _vm->_inter->_variables->getAddressOff8(dataVar);
+
+		// Check of the slot's data is empty
+		bool empty = true;
+		for (uint32 j = 0; j < SaveLoad_Geisha::kSlotSize; j++) {
+			if (slotData[j] != 0) {
+				empty = false;
+				break;
+			}
+		}
+
+		// Don't save empty slots
+		if (empty)
+			continue;
+
+		Common::String slotFile = _file.build(slot);
+		if (slotFile.empty())
+			return false;
+
+		SaveWriter writer(2, slot, slotFile);
+
+		SavePartInfo info(20, (uint32) _vm->getGameType(), 0,
+				_vm->getEndianness(), _vm->_inter->_variables->getSize());
+		SavePartVars vars(_vm, SaveLoad_Geisha::kSlotSize);
+
+		info.setDesc(Common::String::format("Geisha, slot %d", slot).c_str());
+		if (!vars.readFrom(dataVar, 0, SaveLoad_Geisha::kSlotSize))
+			return false;
+
+		if (!writer.writePart(0, &info))
+			return false;
+		if (!writer.writePart(1, &vars))
+			return false;
+	}
+
+	return true;
+}
+
+
+SaveLoad_Geisha::SaveLoad_Geisha(GobEngine *vm, const char *targetName) :
+		SaveLoad(vm) {
+
+	_saveFiles[0].handler = new GameHandler(vm, targetName);
+}
+
+SaveLoad_Geisha::~SaveLoad_Geisha() {
+	for (int i = 0; i < ARRAYSIZE(_saveFiles); i++)
+		delete _saveFiles[i].handler;
+}
+
+const SaveLoad_Geisha::SaveFile *SaveLoad_Geisha::getSaveFile(const char *fileName) const {
+	fileName = stripPath(fileName);
+
+	for (int i = 0; i < ARRAYSIZE(_saveFiles); i++)
+		if (!scumm_stricmp(fileName, _saveFiles[i].sourceName))
+			return &_saveFiles[i];
+
+	return nullptr;
+}
+
+SaveLoad_Geisha::SaveFile *SaveLoad_Geisha::getSaveFile(const char *fileName) {
+	fileName = stripPath(fileName);
+
+	for (int i = 0; i < ARRAYSIZE(_saveFiles); i++)
+		if (!scumm_stricmp(fileName, _saveFiles[i].sourceName))
+			return &_saveFiles[i];
+
+	return nullptr;
+}
+
+SaveHandler *SaveLoad_Geisha::getHandler(const char *fileName) const {
+	const SaveFile *saveFile = getSaveFile(fileName);
+
+	if (saveFile)
+		return saveFile->handler;
+
+	return nullptr;
+}
+
+const char *SaveLoad_Geisha::getDescription(const char *fileName) const {
+	const SaveFile *saveFile = getSaveFile(fileName);
+
+	if (saveFile)
+		return saveFile->description;
+
+	return nullptr;
+}
+
+SaveLoad::SaveMode SaveLoad_Geisha::getSaveMode(const char *fileName) const {
+	const SaveFile *saveFile = getSaveFile(fileName);
+
+	if (saveFile)
+		return saveFile->mode;
+
+	return kSaveModeNone;
+}
+
+} // End of namespace Gob