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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 1.1 2001/06/11 15:15:46 knoaman Exp $
00059  */
00060 
00061 #if !defined(XMLSTRINGTOKENIZER_HPP)
00062 #define XMLSTRINGTOKENIZER_HPP
00063 
00064 #include <util/RefVectorOf.hpp>
00065 #include <util/XMLString.hpp>
00066 
00077 
00078 
00079 class  XMLStringTokenizer
00080 {
00081 public:
00082     // -----------------------------------------------------------------------
00083     //  Public Constructors
00084     // -----------------------------------------------------------------------
00087 
00098     XMLStringTokenizer(const XMLCh* const srcStr);
00099 
00108     XMLStringTokenizer(const XMLCh* const srcStr, const XMLCh* const delim);
00109 
00111 
00112     // -----------------------------------------------------------------------
00113     //  Public Destructor
00114     // -----------------------------------------------------------------------
00117 
00118     ~XMLStringTokenizer();
00119 
00121 
00122     // -----------------------------------------------------------------------
00123     // Management methods
00124     // -----------------------------------------------------------------------
00127 
00134     bool hasMoreTokens();
00135 
00144     int countTokens();
00145 
00152     XMLCh* nextToken();
00153 
00155 
00156 private:
00157     // -----------------------------------------------------------------------
00158     //  CleanUp methods
00159     // -----------------------------------------------------------------------
00160     void cleanUp();
00161 
00162     // -----------------------------------------------------------------------
00163     //  Helper methods
00164     // -----------------------------------------------------------------------
00165     bool isDelimeter(const XMLCh ch);
00166 
00167     // -----------------------------------------------------------------------
00168     //  Private data members
00169     //
00170     //  fOffset
00171     //      The current position in the parsed string.
00172     //
00173     //  fStringLen
00174     //      The length of the string parsed (for convenience).
00175     //
00176     //  fString
00177     //      The string to be parsed
00178     //
00179     //  fDelimeters
00180     //      A set of delimeter characters
00181     //
00182     //  fTokens
00183     //      A vector of the token strings
00184     // -----------------------------------------------------------------------
00185     int                 fOffset;
00186     int                 fStringLen;
00187     XMLCh*              fString;
00188     XMLCh*              fDelimeters;
00189     RefVectorOf<XMLCh>* fTokens;
00190 };
00191 
00192 
00193 // ---------------------------------------------------------------------------
00194 //  XMLStringTokenizer: CleanUp methods
00195 // ---------------------------------------------------------------------------
00196 inline void XMLStringTokenizer::cleanUp() {
00197 
00198     delete [] fString;
00199     delete [] fDelimeters;
00200     delete fTokens;
00201 }
00202 
00203 // ---------------------------------------------------------------------------
00204 //  XMLStringTokenizer: Helper methods
00205 // ---------------------------------------------------------------------------
00206 inline bool XMLStringTokenizer::isDelimeter(const XMLCh ch) {
00207 
00208     return XMLString::indexOf(fDelimeters, ch) == -1 ? false : true;
00209 }
00210 
00211 
00212 // ---------------------------------------------------------------------------
00213 //  XMLStringTokenizer: Management methods
00214 // ---------------------------------------------------------------------------
00215 inline int XMLStringTokenizer::countTokens() {
00216 
00217     if (fStringLen == 0)
00218         return 0;
00219 
00220     int  tokCount = 0;
00221     bool inToken = false;
00222 
00223     for (int i= fOffset; i< fStringLen; i++) {
00224 
00225         if (isDelimeter(fString[i])) {
00226 
00227             if (inToken) {
00228                 inToken = false;
00229             }
00230 
00231             continue;
00232         }
00233 
00234         if (!inToken) {
00235 
00236             tokCount++;
00237             inToken = true;
00238         }
00239 
00240     } // end for
00241 
00242     return tokCount;
00243 }
00244 
00245 #endif
00246 
00250 


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