Add HE72+ specific version of convertMessageToString(), to reduce filtering and since special codes aren't used.

svn-id: r23814

1 files changed, 43 insertions, 10 deletions

diff --git a/engines/scumm/string.cpp b/engines/scumm/string.cpp
index 19b51b6147..1a00a7b03d 100644
--- a/engines/scumm/string.cpp
+++ b/engines/scumm/string.cpp
@@ -792,13 +792,11 @@ void ScummEngine::drawString(int a, const byte *msg) {
 	_string[a].xpos = _charset->_str.right + 8;	// Indy3: Fixes Grail Diary text positioning
 }
 
-int ScummEngine::convertMessageToString(const byte *msg, byte *dst, int dstSize) {
+int ScummEngine_v72he::convertMessageToString(const byte *msg, byte *dst, int dstSize) {
 	uint num = 0;
-	uint32 val;
 	byte chr;
 	const byte *src;
 	byte *end;
-	byte transBuf[384];
 
 	assert(dst);
 	end = dst + dstSize;
@@ -808,13 +806,7 @@ int ScummEngine::convertMessageToString(const byte *msg, byte *dst, int dstSize)
 		return 0;
 	}
 
-	if (_game.version >= 7) {
-		translateText(msg, transBuf);
-		src = transBuf;
-	} else {
-		src = msg;
-	}
-
+	src = msg;
 	num = 0;
 
 	while (1) {
@@ -834,6 +826,47 @@ int ScummEngine::convertMessageToString(const byte *msg, byte *dst, int dstSize)
 
 		if (chr == 0)
 			break;
+
+		*dst++ = chr;
+
+		// Check for a buffer overflow
+		if (dst >= end)
+			error("convertMessageToString: buffer overflow!");
+	}
+	*dst = 0;
+
+	return dstSize - (end - dst);
+}
+
+int ScummEngine::convertMessageToString(const byte *msg, byte *dst, int dstSize) {
+	uint num = 0;
+	uint32 val;
+	byte chr;
+	const byte *src;
+	byte *end;
+	byte transBuf[384];
+
+	assert(dst);
+	end = dst + dstSize;
+
+	if (msg == NULL) {
+		debug(0, "Bad message in convertMessageToString, ignoring");
+		return 0;
+	}
+
+	if (_game.version >= 7) {
+		translateText(msg, transBuf);
+		src = transBuf;
+	} else {
+		src = msg;
+	}
+
+	num = 0;
+
+	while (1) {
+		chr = src[num++];
+		if (chr == 0)
+			break;
 		if (chr == 0xFF) {
 			chr = src[num++];