diff --git a/src/xercesc/util/PlatformUtils.cpp b/src/xercesc/util/PlatformUtils.cpp
index 19374260cde729b5adcffbc2d52517a4411346b2..c8e9e972df93af2389ad1a82e42066df536301bd 100644
--- a/src/xercesc/util/PlatformUtils.cpp
+++ b/src/xercesc/util/PlatformUtils.cpp
@@ -56,8 +56,11 @@
 
 /*
  * $Log$
- * Revision 1.1  2002/02/01 22:22:11  peiyongz
- * Initial revision
+ * Revision 1.2  2002/07/18 20:05:31  knoaman
+ * Add a new feature to control strict IANA encoding name.
+ *
+ * Revision 1.1.1.1  2002/02/01 22:22:11  peiyongz
+ * sane_include
  *
  * Revision 1.16  2001/10/25 21:52:28  peiyongz
  * XMLDeleterFor related functions and data are removed.
@@ -358,3 +361,25 @@ bool XMLPlatformUtils::isNELRecognized() {
     return XMLReader::isNELRecognized();
 }
 
+// ---------------------------------------------------------------------------
+//  XMLPlatformUtils: IANA Encoding checking setting
+// ---------------------------------------------------------------------------
+void XMLPlatformUtils::strictIANAEncoding(const bool state) {
+
+    //Make sure initialize has been called
+    if (gInitFlag == 0) {
+        return;
+    }
+
+    fgTransService->strictIANAEncoding(state);
+}
+
+
+bool XMLPlatformUtils::isStrictIANAEncoding() {
+
+    if (gInitFlag)
+        return fgTransService->isStrictIANAEncoding();
+
+    return false;
+}
+
diff --git a/src/xercesc/util/PlatformUtils.hpp b/src/xercesc/util/PlatformUtils.hpp
index f728786403c3f810277de44232d5ba3347530098..a089aea770c10fb09ad6a0857d48e63cfe25e008 100644
--- a/src/xercesc/util/PlatformUtils.hpp
+++ b/src/xercesc/util/PlatformUtils.hpp
@@ -578,6 +578,26 @@ public :
     static bool isNELRecognized();
     //@}
 
+    /** @name Strict IANA Encoding Checking */
+    //@{
+	/**
+      * This function enables/disables strict IANA encoding names checking.
+      *
+      * The strict checking is disabled by default.
+      *
+      * @param state If true, a strict IANA encoding name check is performed,
+      *              otherwise, no checking.
+      *
+      */
+    static void strictIANAEncoding(const bool state);
+
+    /**
+      * Returns whether a strict IANA encoding name check is enabled or
+      * disabled.
+      */
+    static bool isStrictIANAEncoding();
+    //@}
+
 
 private :
     /** @name Private static methods */
diff --git a/src/xercesc/util/TransService.cpp b/src/xercesc/util/TransService.cpp
index 46f9a446226f3c85c780534aa289b19c47e9d299..07e0862c265ff84ebbef91141be3706de106a3db 100644
--- a/src/xercesc/util/TransService.cpp
+++ b/src/xercesc/util/TransService.cpp
@@ -74,6 +74,7 @@
 #include <xercesc/util/XMLUniDefs.hpp>
 #include <xercesc/util/XMLUni.hpp>
 #include <xercesc/util/TransENameMap.hpp>
+#include <xercesc/util/EncodingValidator.hpp>
 
 
 
@@ -137,7 +138,7 @@ static XMLCh                        gDisallowPre[] =
 {
         chLatin_I, chLatin_B, chLatin_M, chNull
 };
-
+static bool gStrictIANAEncoding = false;
 
 
 // ---------------------------------------------------------------------------
@@ -185,6 +186,18 @@ XMLTransService::makeNewTranscoderFor(  const   XMLCh* const            encoding
                                         ,       XMLTransService::Codes& resValue
                                         , const unsigned int            blockSize)
 {
+    //
+    // If strict IANA encoding flag is set, validate encoding name
+    //
+    if (gStrictIANAEncoding)
+    {
+        if (!EncodingValidator::instance()->isValidEncoding(encodingName))
+        {
+            resValue = XMLTransService::UnsupportedEncoding;               
+            return 0;
+        }
+    }
+
     //
     //  First try to find it in our list of mappings to intrinsically
     //  supported encodings. We have to upper case the passed encoding
@@ -522,3 +535,16 @@ void XMLTransService::initTransService()
     gMappings->put((void*)XMLUni::fgWin1252EncodingString, new ENameMapFor<XMLWin1252Transcoder>(XMLUni::fgWin1252EncodingString));
 
 }
+
+// ---------------------------------------------------------------------------
+//  XLMTransService: IANA encoding setting
+// ---------------------------------------------------------------------------
+void XMLTransService::strictIANAEncoding(const bool newState)
+{
+    gStrictIANAEncoding = newState;
+}
+
+bool XMLTransService::isStrictIANAEncoding()
+{
+    return gStrictIANAEncoding;
+}
diff --git a/src/xercesc/util/TransService.hpp b/src/xercesc/util/TransService.hpp
index 5224f26c5041e3b14280388bb4b7f71573f1b8cf..cee2973cf07f3538b995429dd60f99835477647c 100644
--- a/src/xercesc/util/TransService.hpp
+++ b/src/xercesc/util/TransService.hpp
@@ -56,6 +56,9 @@
 
 /*
  * $Log$
+ * Revision 1.3  2002/07/18 20:05:31  knoaman
+ * Add a new feature to control strict IANA encoding name.
+ *
  * Revision 1.2  2002/04/09 15:44:00  knoaman
  * Add lower case string support.
  *
@@ -253,6 +256,12 @@ private :
     XMLTransService(const XMLTransService&);
     void operator=(const XMLTransService&);
 
+    // -----------------------------------------------------------------------
+    //  Hidden method to enable/disable strict IANA encoding check
+    //  Caller: XMLPlatformUtils
+    // -----------------------------------------------------------------------
+    void strictIANAEncoding(const bool newState);
+    bool isStrictIANAEncoding();
 
     // -----------------------------------------------------------------------
     //  Hidden init method for platform utils to call
diff --git a/src/xercesc/util/XMLUni.cpp b/src/xercesc/util/XMLUni.cpp
index 711e208ca3860c5bafc9f307d88ecd20174bd28b..656745562326215073f9f45ae6fcc0e0b344eab1 100644
--- a/src/xercesc/util/XMLUni.cpp
+++ b/src/xercesc/util/XMLUni.cpp
@@ -1031,6 +1031,21 @@ const XMLCh XMLUni::fgXercesUseCachedGrammarInParse[] =
     ,   chLatin_s, chLatin_e, chNull
 };
 
+//Xerces: http://apache.org/xml/features/validation/strict-IANAEncoding
+const XMLCh XMLUni::fgXercesStrictIANAEncoding[] =
+{
+        chLatin_h, chLatin_t, chLatin_t, chLatin_p, chColon, chForwardSlash
+    ,   chForwardSlash, chLatin_a, chLatin_p, chLatin_a, chLatin_c, chLatin_h
+    ,   chLatin_e, chPeriod, chLatin_o, chLatin_r, chLatin_g, chForwardSlash
+    ,   chLatin_x, chLatin_m, chLatin_l, chForwardSlash, chLatin_f, chLatin_e
+    ,   chLatin_a, chLatin_t, chLatin_u, chLatin_r, chLatin_e, chLatin_s
+    ,   chForwardSlash, chLatin_v, chLatin_a, chLatin_l, chLatin_i, chLatin_d
+    ,   chLatin_a, chLatin_t, chLatin_i, chLatin_o, chLatin_n, chForwardSlash
+    ,   chLatin_s, chLatin_t, chLatin_r, chLatin_i, chLatin_c, chLatin_t, chDash
+    ,   chLatin_I, chLatin_A, chLatin_N, chLatin_A, chLatin_E, chLatin_n, chLatin_c
+    ,   chLatin_o, chLatin_d, chLatin_i, chLatin_n, chLatin_g, chNull
+};
+
 
 //Introduced in DOM Level 3
 const XMLCh XMLUni::fgDOMCanonicalForm[] =
diff --git a/src/xercesc/util/XMLUni.hpp b/src/xercesc/util/XMLUni.hpp
index b9bcf8e1479c37c8f682e4f4d33f35784109b7c4..558cd1c3bb9e3820b175563a4a2ef8b5eca8e5af 100644
--- a/src/xercesc/util/XMLUni.hpp
+++ b/src/xercesc/util/XMLUni.hpp
@@ -230,6 +230,7 @@ public :
     static const XMLCh fgXercesUserAdoptsDOMDocument[];
     static const XMLCh fgXercesCacheGrammarFromParse[];
     static const XMLCh fgXercesUseCachedGrammarInParse[];
+    static const XMLCh fgXercesStrictIANAEncoding[];
 
     // SAX2 features/properties names
     static const XMLCh fgSAX2CoreValidation[];