Initial commit

engines/wintermute/base/file/base_save_thumb_file.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 based on WME Lite.
+ * http://dead-code.org/redir.php?target=wmelite
+ * Copyright (c) 2011 Jan Nedoma
+ */
+
+#include "engines/wintermute/base/base_persistence_manager.h"
+#include "engines/wintermute/base/file/base_save_thumb_file.h"
+#include "engines/wintermute/base/base.h"
+#include "common/memstream.h"
+
+namespace Wintermute {
+
+Common::SeekableReadStream *openThumbFile(const Common::String &filename) {
+	if (scumm_strnicmp(filename.c_str(), "savegame:", 9) != 0) {
+		return nullptr;
+	}
+
+	size_t filenameSize = strlen(filename.c_str()) - 9 + 1;
+	char *tempFilename = new char[filenameSize];
+	Common::strcpy_s(tempFilename, filenameSize, filename.c_str() + 9);
+	for (uint32 i = 0; i < strlen(tempFilename); i++) {
+		if (tempFilename[i] < '0' || tempFilename[i] > '9') {
+			tempFilename[i] = '\0';
+			break;
+		}
+	}
+
+	// get slot number from name
+	int slot = atoi(tempFilename);
+	delete[] tempFilename;
+
+	BasePersistenceManager *pm = new BasePersistenceManager();
+	if (!pm) {
+		return nullptr;
+	}
+
+	Common::String slotFilename = pm->getFilenameForSlot(slot);
+
+	if (DID_FAIL(pm->initLoad(slotFilename))) {
+		delete pm;
+		return nullptr;
+	}
+
+	if (pm->_thumbnailDataSize == 0) {
+		delete pm;
+		return nullptr;
+	}
+
+	uint32 size = pm->_thumbnailDataSize;
+	byte *data = (byte *)malloc(size);
+	memcpy(data, pm->_thumbnailData, size);
+	delete pm;
+
+	return new Common::MemoryReadStream(data, size, DisposeAfterUse::YES);
+}
+
+} // End of namespace Wintermute