tokenizer.h

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00001 // Copyright (C) 1999-2005 Open Source Telecom Corporation.
00002 //
00003 // This program is free software; you can redistribute it and/or modify
00004 // it under the terms of the GNU General Public License as published by
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00007 //
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00009 // but WITHOUT ANY WARRANTY; without even the implied warranty of
00010 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
00011 // GNU General Public License for more details.
00012 //
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00015 // Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
00016 //
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00021 // file does not by itself cause the resulting executable to be covered by
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00023 // invalidate any other reasons why the executable file might be covered by
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00025 //
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00027 // Common C++.  If you copy code from other releases into a copy of GNU
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00037 
00043 #ifndef CCXX_TOKENIZER_H_
00044 #define CCXX_TOKENIZER_H_
00045 
00046 #ifndef CCXX_MISSING_H_
00047 #include <cc++/missing.h>
00048 #endif
00049 
00050 #ifndef CCXX_THREAD_H_
00051 #include <cc++/thread.h>
00052 #endif
00053 
00054 #ifdef  CCXX_NAMESPACES
00055 namespace ost {
00056 #endif
00057 
00101 class __EXPORT StringTokenizer {
00102 public:
00108         static const char * const SPACE;
00109 
00119         // maybe move more global ?
00120         class NoSuchElementException { };
00121 
00126         class __EXPORT iterator {
00127                 friend class StringTokenizer;  // access our private constructors
00128         private:
00129                 const StringTokenizer *myTok; // my StringTokenizer
00130                 const char *start;      // start of current token
00131                 const char *tokEnd;     // end of current token (->nxDelimiter)
00132                 const char *endp;       // one before next token
00133                 char *token;            // allocated token, if requested
00134 
00135                 // for initialization of the itEnd iterator
00136                 iterator(const StringTokenizer &tok, const char *end)
00137                         : myTok(&tok),tokEnd(0),endp(end),token(0) {}
00138 
00139                 iterator(const StringTokenizer &tok)
00140                         : myTok(&tok),tokEnd(0),endp(myTok->str-1),token(0) {
00141                         ++(*this); // init first token.
00142                 }
00143 
00144         public:
00145                 iterator() : myTok(0),start(0),tokEnd(0),endp(0),token(0) {}
00146 
00147                 // see also: comment in implementation of operator++
00148                 virtual ~iterator() 
00149                         { if (token) *token='\0'; delete [] token; }
00150 
00154                 // everything, but not responsible for the allocated token.
00155                 iterator(const iterator& i) :
00156                         myTok(i.myTok),start(i.start),tokEnd(i.tokEnd),
00157                         endp(i.endp),token(0) {}
00158 
00162                 // everything, but not responsible for the allocated token.
00163                 iterator &operator = (const iterator &i) 
00164                 {
00165                         myTok = i.myTok;
00166                         start = i.start; endp = i.endp; tokEnd = i.tokEnd;
00167                         if ( token )
00168                                 delete [] token;
00169                         token = 0;
00170                         return *this;
00171                 }
00172 
00176                 iterator &operator ++ () THROWS (NoSuchElementException);
00177 
00186                 const char*  operator *  () THROWS (NoSuchElementException);
00187 
00194                 inline char nextDelimiter() const 
00195                         {return (tokEnd) ? *tokEnd : '\0';}
00196 
00201                 // only compare the end-position. speed.
00202                 inline bool operator == (const iterator &other) const 
00203                         {return (endp == other.endp);}
00204 
00209                 // only compare the end position. speed.
00210                 inline bool operator != (const iterator &other) const 
00211                         {return (endp != other.endp);}
00212         };
00213 private:
00214         friend class StringTokenizer::iterator;
00215         const char *str;
00216         const char *delim;
00217         bool skipAll, trim;
00218         iterator itEnd;
00219 
00220 public:
00259         StringTokenizer (const char *str,
00260                          const char *delim,
00261                          bool skipAllDelim = false,
00262                          bool trim = false);
00263 
00273         StringTokenizer (const char *s);
00274 
00278         iterator begin() const 
00279                 {return iterator(*this);}
00280 
00285         void setDelimiters (const char *d) 
00286                 {delim = d;}
00287 
00292         iterator begin(const char *d) 
00293         {
00294                 delim = d;
00295                 return iterator(*this);
00296         }
00297 
00301         const iterator& end() const 
00302                 {return itEnd;}
00303 };
00304 
00305 #ifdef  CCXX_NAMESPACES
00306 }
00307 #endif
00308 
00309 #endif
00310 

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