Resolves: #i75731# check output stream and...

throw IOExceptioin if it is not intialized

(cherry picked from commit cf17f922)

Change-Id: I07f6def513ef54b736689bf22565645f0c313982

io/source/TextOutputStream/TextOutputStream.cxx

@@ -63,6 +63,7 @@ class OTextOutputStream : public TextOutputStreamHelper
     rtl_UnicodeToTextContext    mContextUnicode2Text;
 
     Sequence<sal_Int8> implConvert( const OUString& rSource );
+    void checkOutputStream() throw(IOException);
 
 public:
     OTextOutputStream();
@@ -163,6 +164,7 @@ Sequence<sal_Int8> OTextOutputStream::implConvert( const OUString& rSource )
 void OTextOutputStream::writeString( const OUString& aString )
     throw(IOException, RuntimeException)
 {
+    checkOutputStream();
     if( !mbEncodingInitialized )
     {
         OUString aUtf8Str("utf8");
@@ -194,22 +196,35 @@ void OTextOutputStream::setEncoding( const OUString& Encoding )
 void OTextOutputStream::writeBytes( const Sequence< sal_Int8 >& aData )
     throw(NotConnectedException, BufferSizeExceededException, IOException, RuntimeException)
 {
+    checkOutputStream();
     mxStream->writeBytes( aData );
 }
 
 void OTextOutputStream::flush(  )
     throw(NotConnectedException, BufferSizeExceededException, IOException, RuntimeException)
 {
+    checkOutputStream();
     mxStream->flush();
 }
 
 void OTextOutputStream::closeOutput(  )
     throw(NotConnectedException, BufferSizeExceededException, IOException, RuntimeException)
 {
+    checkOutputStream();
     mxStream->closeOutput();
 }
 
 
+void OTextOutputStream::checkOutputStream()
+    throw(IOException)
+{
+    if (! mxStream.is() )
+        throw IOException(
+            OUString("output stream is not initialized, you have to use setOutputStream first"),
+            Reference<XInterface>());
+}
+
+
 //===========================================================================
 // XActiveDataSource