Fix substring indexing and whitespace.

Fixes an off-by-one and off-by-initial-offset error,
not clearing the stream between loops,
and a few other edge conditions.

Sources/Plasma/FeatureLib/pfLocalizationMgr/pfLocalizedString.cpp

@@ -84,16 +84,20 @@ void pfLocalizedString::IParameterize(const plString & inString)
         if (nextToken != -1)
         {
             // Check it's not escaped.
-		    if ((nextToken > 0) && (remainder.CharAt(nextToken-1) != '\\'))
+            if ((nextToken == 0) || ((nextToken > 0) && (remainder.CharAt(nextToken-1) != '\\')))
             {
-			    // Check if it has an end.
+                // Check if it has an end (ignoring any terminators we need to cross a space to find).
                 int endToken = remainder.Substr(nextToken).Find("s");
-			    if (endToken != -1)
+                if ((endToken != -1) && (remainder.Substr(nextToken, endToken).Find(" ") == -1))
                 {
-                    // Store existing block.
-                    newText << remainder;
+                    // Store existing block if it contains anything.
+                    newText << remainder.Substr(0, nextToken);
                     curTextBlock.fText = newText.GetString().Replace("\\\\", "\\");
+                    if (!curTextBlock.fText.IsEmpty())
+                    {
                         fText.push_back(curTextBlock);
+                        newText.Truncate();
+                    }
 
                     if (endToken == nextToken + 1)
                     {
@@ -107,7 +111,7 @@ void pfLocalizedString::IParameterize(const plString & inString)
                     {
                         // Store indexed param block.
                         curTextBlock.fIsParam = true;
-                        curTextBlock.fParamIndex = remainder.Substr(nextToken, endToken-1).ToInt(10) - 1; // args start at 1
+                        curTextBlock.fParamIndex = remainder.Substr(nextToken + 1, endToken - 1).ToInt(10) - 1; // args start at 1
                         curTextBlock.fText = "";
                         fText.push_back(curTextBlock);
                     }
@@ -115,8 +119,16 @@ void pfLocalizedString::IParameterize(const plString & inString)
                     curTextBlock.fParamIndex = 0;
                     fNumArguments++;
 
-                    // Continue using the remaining string.
-                    remainder = remainder.Substr(endToken+1);
+                    // Continue, using the remaining string.
+                    remainder = remainder.Substr(nextToken + endToken + 1);
+                }
+                else
+                {
+                    // We have an unescaped but unterminated %.
+                    // For now, let's just pretend it was escaped;
+                    // This way they'll show up visibly in-game and will be reported.
+                    newText << "%";
+                    remainder = remainder.Substr(nextToken + 1);
                 }
             }
             else
@@ -132,7 +144,11 @@ void pfLocalizedString::IParameterize(const plString & inString)
             newText << remainder;
             remainder = "";
             curTextBlock.fText = newText.GetString().Replace("\\\\", "\\");
+            if (!curTextBlock.fText.IsEmpty())
+            {
                 fText.push_back(curTextBlock);
+                newText.Truncate();
+            }
         }
     }
 }
@@ -159,7 +175,7 @@ void pfLocalizedString::IUpdatePlainText()
         if (curTextBlock.fIsParam)
         {
             // Fill in parameter value.
-            ss << plString::Format("%%%ds", curTextBlock.fParamIndex + 1);
+            ss << "%%" << curTextBlock.fParamIndex + 1 << "s";
         }
         else
         {
@@ -192,8 +208,7 @@ void pfLocalizedString::IUpdateXML()
         if (curTextBlock.fIsParam)
         {
             // Fill in parameter value.
-            plString paramStr = plString::Format("%%%ds", curTextBlock.fParamIndex + 1);
-            ss << paramStr;
+            ss << "%%" << curTextBlock.fParamIndex + 1 << "s";
         }
         else
         {