convert include/svtools/rtfout.hxx from String to OUString

and remove dead function.

Change-Id: I0c2bf9409f747e98f9575c5861a8629435e27af4

include/svtools/rtfout.hxx

@@ -25,7 +25,9 @@
 
 #include <rtl/textenc.h>
 
-class String;
+namespace rtl {
+  class OUString;
+};
 class SvStream;
 
 class SVT_DLLPUBLIC RTFOutFuncs
@@ -41,10 +43,7 @@ public:
                     int *pUCMode,
                     rtl_TextEncoding eDestEnc = RTL_TEXTENCODING_MS_1252,
                     sal_Bool bWriteHelpFile = sal_False );
-    static SvStream& Out_String( SvStream&, const String&,
-                    rtl_TextEncoding eDestEnc = RTL_TEXTENCODING_MS_1252,
-                    sal_Bool bWriteHelpFile = sal_False );
-    static SvStream& Out_Fontname( SvStream&, const String&,
+    static SvStream& Out_String( SvStream&, const rtl::OUString&,
                     rtl_TextEncoding eDestEnc = RTL_TEXTENCODING_MS_1252,
                     sal_Bool bWriteHelpFile = sal_False );
 

svtools/source/svrtf/rtfout.cxx

@@ -156,12 +156,12 @@ SvStream& RTFOutFuncs::Out_Char(SvStream& rStream, sal_Unicode c,
     return rStream;
 }
 
-SvStream& RTFOutFuncs::Out_String( SvStream& rStream, const String& rStr,
+SvStream& RTFOutFuncs::Out_String( SvStream& rStream, const OUString& rStr,
     rtl_TextEncoding eDestEnc, sal_Bool bWriteHelpFile)
 {
     int nUCMode = 1;
-    for (xub_StrLen n = 0; n < rStr.Len(); ++n)
-        Out_Char(rStream, rStr.GetChar(n), &nUCMode, eDestEnc, bWriteHelpFile);
+    for (sal_Int32 n = 0; n < rStr.getLength(); ++n)
+        Out_Char(rStream, rStr[n], &nUCMode, eDestEnc, bWriteHelpFile);
     if (nUCMode != 1)
       rStream << "\\uc1"<< " "; // #i47831# add an additional whitespace, so that "document whitespaces" are not ignored.;
     return rStream;