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diff --git a/util/stringutils.h b/util/stringutils.h
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+// stringutils.h
+
+/*    Copyright 2010 10gen Inc.
+ *
+ *    Licensed under the Apache License, Version 2.0 (the "License");
+ *    you may not use this file except in compliance with the License.
+ *    You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *    Unless required by applicable law or agreed to in writing, software
+ *    distributed under the License is distributed on an "AS IS" BASIS,
+ *    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *    See the License for the specific language governing permissions and
+ *    limitations under the License.
+ */
+
+#ifndef UTIL_STRING_UTILS_HEADER
+#define UTIL_STRING_UTILS_HEADER
+
+namespace mongo {
+
+    void splitStringDelim( const string& str , vector<string>* res , char delim );
+
+    void joinStringDelim( const vector<string>& strs , string* res , char delim );
+
+    inline string tolowerString( const string& input ){
+        string::size_type sz = input.size();
+        
+        boost::scoped_array<char> line(new char[sz+1]);
+        char * copy = line.get();
+        
+        for ( string::size_type i=0; i<sz; i++ ){
+            char c = input[i];
+            copy[i] = (char)tolower( (int)c );
+        }
+        copy[sz] = 0;
+        return string(copy);
+    }
+   
+} // namespace mongo
+
+#endif // UTIL_STRING_UTILS_HEADER