Initial commit

engines/cine/msg.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 "common/debug.h"
+#include "common/endian.h"
+#include "common/textconsole.h"
+
+#include "cine/msg.h"
+#include "cine/various.h"
+
+namespace Cine {
+
+int16 loadMsg(char *pMsgName) {
+	uint32 sourceSize;
+
+	checkDataDisk(-1);
+	g_cine->_messageTable.clear();
+
+	int16 foundFileIdx = findFileInBundle(pMsgName);
+	if (foundFileIdx < 0) {
+		warning("loadMsg(\"%s\"): Could not find file in bundle.", pMsgName);
+		return -1;
+	}
+
+	byte *dataPtr = readBundleFile(foundFileIdx, &sourceSize);
+
+	setMouseCursor(MOUSE_CURSOR_DISK);
+
+	uint count = READ_BE_UINT16(dataPtr);
+	uint messageLenPos = 2;
+	uint messageDataPos = messageLenPos + 2 * count;
+
+	// Read in the messages
+	for (uint i = 0; i < count; i++) {
+		// Read message's length
+		uint messageLen = READ_BE_UINT16(dataPtr + messageLenPos);
+		messageLenPos += 2;
+
+		// Store the read message.
+		// This code works around input data that has empty strings residing outside the input
+		// buffer (e.g. message indices 58-254 in BATEAU.MSG in PROCS08 in Operation Stealth).
+		if (messageDataPos < sourceSize) {
+			g_cine->_messageTable.push_back((const char *)(dataPtr + messageDataPos));
+		} else {
+			if (messageLen > 0) { // Only warn about overflowing non-empty strings
+				warning("loadMsg(%s): message (%d. / %d) is overflowing the input buffer. Replacing it with an empty string", pMsgName, i + 1, count);
+			} else {
+				debugC(5, kCineDebugPart, "loadMsg(%s): empty message (%d. / %d) resides outside input buffer", pMsgName, i + 1, count);
+			}
+			// Message resides outside the input buffer so we replace it with an empty string
+			g_cine->_messageTable.push_back("");
+		}
+		// Jump to the next message
+		messageDataPos += messageLen;
+	}
+
+	free(dataPtr);
+	return 0;
+}
+
+} // End of namespace Cine