Es++ Class: StringTokenizerT

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Source code

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 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR 
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 *
 *  StringTokenizerT.h
 *
 *****************************************************************************/


#pragma once

//#include <es++/Analyzer.h>
#include <es++/StringT.h>
#include <es++/StringBufferT.h>

namespace Es {


template <class T> class StringTokenizerT :public Object {
  int    num;
  const T*  string;
  T   separator[5];

private:
  void defaultSeparator()
  {
    this->num = 0;
    this->separator[num++] = (T)' ';
    this->separator[num++] = (T)'\t';
    this->separator[num++] = (T)',';
  }

public:

  StringTokenizerT()
    :num(0), string(NULL)
  {
    defaultSeparator();
  }


public:
  StringTokenizerT(const T* str)
    :num(0), string(str)
  {
    defaultSeparator();
  }

public:
  StringTokenizerT(const StringT<T>& str) 
    :num(0), string((const T*)str)
  {
    defaultSeparator();
  }

public:
  StringTokenizerT(const StringBufferT<T>& buffer) 
    :num(0), string((const T*)buffer)
  {
    defaultSeparator();
  }

public:
  bool addSeparator(T s)
  {
    bool rc = false;
    if(num < SizeOf(separator)) {
      separator[num++] = s;
      rc = true;
    }
    return rc;
  }

public:
  bool hasMoreToken()
  {
    bool rc = false;
    if (string != NULL && *string != (T)0) {
      rc = true;
    }
    return rc;
  }

public:
  void clearSeparator()
  {
    num = 0;
  }

public:
  bool isSeparator(T s)
  {
    bool rc = false;
    for(int i = 0; i< num; i++) {
      if(separator[i] == s) {
        rc = true;
        break;
      }
    }
    return rc;
  }

public:
  const T* getToken(StringT<T>& token)
  {
    if (string != NULL) {
      StringBufferT<T> buffer;
      string = getToken(buffer);
      token = buffer.getBuffer();
    }
    return string;
  }

public:
  const T* getToken(StringBufferT<T>& buffer)
  {
    int quotation = 0;
    const T* p = this->string;
  
    if(p == NULL || *p == (T)0) {
      return NULL;
    }

    while(*p !=(T)0 && isSeparator(*p) == true) {    
      p++;
    }

    while(*p != (T)0) {
      if(*p == (T)'"' && *(p+1) == (T)'"') {
        p += 2;
        break;
      }

      if(*p == (T)'"') {
        p++;  
        quotation++;
      }
    
      if(isSeparator(*p) == true && quotation == 2) {
        break;
      }
    
      if(isSeparator(*p) == true && quotation == 0) {
        break;
      }
      buffer.append(*p++);
    }
    return p;
  }

public:
  const T* getToken(T* token, int size)
  {
    if (this->string != NULL) {
      if (token !=NULL && size>0) {
        this->string = getToken(this->string, token, size);
      }
    }
    return string;
  }

public:
  const T* getToken(const T* p, T* first, int size)
  {
    if (p == NULL || first == NULL || size<1) {
      return NULL;
    }

    if(*p == ZERO) {
      return NULL;
    }

    while(*p !=ZERO && isSeparator(*p) == true) {    
      p++;
    }

    int len = 1;

    int quotation = 0;

    while(*p != (T)ZERO) {
      if(*p == (T)'"' && *(p+1) == (T)'"') {
        p += 2;
        break;
      }
      if(*p == (T)'"') {
        p++;  
        quotation++;
      }
    
      if(isSeparator(*p) == true && quotation == 2) {
        break;
      }
      if(isSeparator(*p) == true && quotation == 0) {
        break;
      }
  
      if(len < size) {
        *first++ = *p++;
        len++;
      }
      else {
        break;
      }
    }
    *first = ZERO;
    return p;
  }

};

}




Last modified: 27 July 2017

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