Initial commit

engines/kyra/gui/gui.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/>.
+ *
+ */
+
+
+#include "kyra/gui/gui.h"
+#include "kyra/kyra_v1.h"
+#include "kyra/engine/util.h"
+
+#include "common/savefile.h"
+#include "common/system.h"
+
+
+namespace Kyra {
+
+GUI::GUI(KyraEngine_v1 *kyra) : _vm(kyra), _screen(kyra ? kyra->screen() : nullptr) {
+	_saveSlotsListUpdateNeeded = true;
+	_savegameListSize = 0;
+	_savegameList = nullptr;
+}
+
+GUI::~GUI() {
+	if (_savegameList) {
+		for (int i = 0; i < _savegameListSize; i++)
+			delete[] _savegameList[i];
+		delete[] _savegameList;
+		_savegameList = nullptr;
+	}
+}
+
+void GUI::updateSaveFileList(Common::String targetName, bool excludeQuickSaves) {
+	Common::String pattern = targetName + ".###";
+	Common::StringArray saveFileList = _vm->_saveFileMan->listSavefiles(pattern);
+	_saveSlots.clear();
+
+	for (Common::StringArray::const_iterator i = saveFileList.begin(); i != saveFileList.end(); ++i) {
+		// The last 3 digits of the filename correspond to the save slot.
+		const int slotNum = atoi(i->c_str() + i->size() - 3);
+		if (excludeQuickSaves && slotNum >= 990)
+			continue;
+		_saveSlots.push_back(slotNum);
+	}
+
+	if (_saveSlots.begin() == _saveSlots.end())
+		return;
+
+	sortSaveSlots();
+}
+
+void GUI::sortSaveSlots() {
+	Common::sort(_saveSlots.begin(), _saveSlots.end(), Common::Less<int>());
+	if (_saveSlots.size() > 2)
+		Common::sort(_saveSlots.begin() + 1, _saveSlots.end(), Common::Greater<int>());
+}
+
+int GUI::getNextSavegameSlot() {
+	Common::InSaveFile *in;
+
+	int start = _vm->game() == GI_LOL ? 0 : 1;
+
+	for (int i = start; i < 990; i++) {
+		if ((in = _vm->_saveFileMan->openForLoading(_vm->getSavegameFilename(i))))
+			delete in;
+		else
+			return i;
+	}
+	warning("Didn't save: Ran out of saveGame filenames");
+	return 0;
+}
+
+void GUI::updateSaveSlotsList(Common::String targetName, bool force) {
+	if (!_saveSlotsListUpdateNeeded && !force)
+		return;
+
+	_saveSlotsListUpdateNeeded = false;
+
+	if (_savegameList) {
+		for (int i = 0; i < _savegameListSize; i++)
+			delete[] _savegameList[i];
+		delete[] _savegameList;
+	}
+
+	updateSaveFileList(targetName, true);
+	int numSaves = _savegameListSize = _saveSlots.size();
+	bool allowEmptySlots = (_vm->game() == GI_EOB1 || _vm->game() == GI_EOB2);
+
+	if (_savegameListSize) {
+		if (allowEmptySlots)
+			_savegameListSize = 990;
+
+		KyraEngine_v1::SaveHeader header;
+		Common::InSaveFile *in;
+
+		_savegameList = new char*[_savegameListSize]();
+
+		for (int i = 0; i < numSaves; i++) {
+			in = _vm->openSaveForReading(_vm->getSavegameFilename(targetName, _saveSlots[i]).c_str(), header, targetName == _vm->_targetName);
+			char **listEntry = &_savegameList[allowEmptySlots ? _saveSlots[i] : i];
+			if (in) {
+				uint buffSize = header.description.size() + 1;
+				*listEntry = new char[buffSize];
+				Common::strlcpy(*listEntry, header.description.c_str(), buffSize);
+				// Ingame auto-generated Japanese EOB SegaCD savegame descriptions have a special 1-byte encoding that
+				// does not survive this conversion. And the rest of the characters in these descriptions do not require it.
+				if (!(_vm->gameFlags().platform == Common::kPlatformSegaCD && _vm->gameFlags().lang == Common::JA_JPN && Common::String(*listEntry).contains('\r')))
+					Util::convertString_GUItoKYRA(*listEntry, buffSize,
+								      _vm->gameFlags().lang == Common::ZH_TWN ? Common::CodePage::kBig5 : Common::CodePage::kDos850);
+				delete in;
+			} else {
+				*listEntry = nullptr;
+				error("GUI::updateSavegameList(): Unexpected missing save file for slot: %d.", _saveSlots[i]);
+			}
+		}
+
+	} else {
+		_savegameList = nullptr;
+	}
+}
+
+} // End of namespace Kyra