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XMLStringTokenizer.hpp

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00001 /*
00002  * The Apache Software License, Version 1.1
00003  *
00004  * Copyright (c) 2001 The Apache Software Foundation.  All rights
00005  * reserved.
00006  *
00007  * Redistribution and use in source and binary forms, with or without
00008  * modification, are permitted provided that the following conditions
00009  * are met:
00010  *
00011  * 1. Redistributions of source code must retain the above copyright
00012  *    notice, this list of conditions and the following disclaimer.
00013  *
00014  * 2. Redistributions in binary form must reproduce the above copyright
00015  *    notice, this list of conditions and the following disclaimer in
00016  *    the documentation and/or other materials provided with the
00017  *    distribution.
00018  *
00019  * 3. The end-user documentation included with the redistribution,
00020  *    if any, must include the following acknowledgment:
00021  *       "This product includes software developed by the
00022  *        Apache Software Foundation (http://www.apache.org/)."
00023  *    Alternately, this acknowledgment may appear in the software itself,
00024  *    if and wherever such third-party acknowledgments normally appear.
00025  *
00026  * 4. The names "Xerces" and "Apache Software Foundation" must
00027  *    not be used to endorse or promote products derived from this
00028  *    software without prior written permission. For written
00029  *    permission, please contact apache\@apache.org.
00030  *
00031  * 5. Products derived from this software may not be called "Apache",
00032  *    nor may "Apache" appear in their name, without prior written
00033  *    permission of the Apache Software Foundation.
00034  *
00035  * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
00036  * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
00037  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
00038  * DISCLAIMED.  IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
00039  * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
00040  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
00041  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
00042  * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
00043  * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
00044  * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
00045  * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
00046  * SUCH DAMAGE.
00047  * ====================================================================
00048  *
00049  * This software consists of voluntary contributions made by many
00050  * individuals on behalf of the Apache Software Foundation, and was
00051  * originally based on software copyright (c) 2001, International
00052  * Business Machines, Inc., http://www.ibm.com .  For more information
00053  * on the Apache Software Foundation, please see
00054  * <http://www.apache.org/>.
00055  */
00056 
00057 /*
00058  * $Id: XMLStringTokenizer.hpp,v 1.4 2003/05/16 03:11:22 knoaman Exp $
00059  */
00060 
00061 #if !defined(XMLSTRINGTOKENIZER_HPP)
00062 #define XMLSTRINGTOKENIZER_HPP
00063 
00064 #include <xercesc/util/RefArrayVectorOf.hpp>
00065 #include <xercesc/util/XMLString.hpp>
00066 
00067 XERCES_CPP_NAMESPACE_BEGIN
00068 
00081   class  XMLStringTokenizer :public XMemory
00082 {
00083 public:
00084     // -----------------------------------------------------------------------
00085     //  Public Constructors
00086     // -----------------------------------------------------------------------
00089 
00100     XMLStringTokenizer(const XMLCh* const srcStr,
00101                        MemoryManager* const manager = XMLPlatformUtils::fgMemoryManager);
00102 
00111     XMLStringTokenizer(const XMLCh* const srcStr
00112                        , const XMLCh* const delim
00113                        , MemoryManager* const manager = XMLPlatformUtils::fgMemoryManager);
00114 
00116 
00117     // -----------------------------------------------------------------------
00118     //  Public Destructor
00119     // -----------------------------------------------------------------------
00122 
00123     ~XMLStringTokenizer();
00124 
00126 
00127     // -----------------------------------------------------------------------
00128     // Management methods
00129     // -----------------------------------------------------------------------
00132 
00139     bool hasMoreTokens();
00140 
00149     int countTokens();
00150 
00157     XMLCh* nextToken();
00158 
00160 
00161 private:
00162     // -----------------------------------------------------------------------
00163     //  CleanUp methods
00164     // -----------------------------------------------------------------------
00165     void cleanUp();
00166 
00167     // -----------------------------------------------------------------------
00168     //  Helper methods
00169     // -----------------------------------------------------------------------
00170     bool isDelimeter(const XMLCh ch);
00171 
00172     // -----------------------------------------------------------------------
00173     //  Private data members
00174     //
00175     //  fOffset
00176     //      The current position in the parsed string.
00177     //
00178     //  fStringLen
00179     //      The length of the string parsed (for convenience).
00180     //
00181     //  fString
00182     //      The string to be parsed
00183     //
00184     //  fDelimeters
00185     //      A set of delimeter characters
00186     //
00187     //  fTokens
00188     //      A vector of the token strings
00189     // -----------------------------------------------------------------------
00190     int                 fOffset;
00191     int                 fStringLen;
00192     XMLCh*              fString;
00193     XMLCh*              fDelimeters;
00194     RefArrayVectorOf<XMLCh>* fTokens;
00195     MemoryManager*           fMemoryManager;
00196 };
00197 
00198 
00199 // ---------------------------------------------------------------------------
00200 //  XMLStringTokenizer: CleanUp methods
00201 // ---------------------------------------------------------------------------
00202 inline void XMLStringTokenizer::cleanUp() {
00203 
00204     fMemoryManager->deallocate(fString);//delete [] fString;
00205     fMemoryManager->deallocate(fDelimeters);//delete [] fDelimeters;
00206     delete fTokens;
00207 }
00208 
00209 // ---------------------------------------------------------------------------
00210 //  XMLStringTokenizer: Helper methods
00211 // ---------------------------------------------------------------------------
00212 inline bool XMLStringTokenizer::isDelimeter(const XMLCh ch) {
00213 
00214     return XMLString::indexOf(fDelimeters, ch) == -1 ? false : true;
00215 }
00216 
00217 
00218 // ---------------------------------------------------------------------------
00219 //  XMLStringTokenizer: Management methods
00220 // ---------------------------------------------------------------------------
00221 inline int XMLStringTokenizer::countTokens() {
00222 
00223     if (fStringLen == 0)
00224         return 0;
00225 
00226     int  tokCount = 0;
00227     bool inToken = false;
00228 
00229     for (int i= fOffset; i< fStringLen; i++) {
00230 
00231         if (isDelimeter(fString[i])) {
00232 
00233             if (inToken) {
00234                 inToken = false;
00235             }
00236 
00237             continue;
00238         }
00239 
00240         if (!inToken) {
00241 
00242             tokCount++;
00243             inToken = true;
00244         }
00245 
00246     } // end for
00247 
00248     return tokCount;
00249 }
00250 
00251 XERCES_CPP_NAMESPACE_END
00252 
00253 #endif
00254 


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