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/*
* Tokenizer.h
*
* Created on: 28/02/2012
* Author: Arafat noureddine
*/
#ifndef TOKENIZER_H_
#define TOKENIZER_H_
#include <stdexcept>
#include <sstream>
#include <iostream>
#include <vector>
#include <string>
/////////////////////////////////////////////////////////////////////////////
/// \class Tokenizer
/// \brief String Tokenizer
///
/// \class Tokenizer
///
/////////////////////////////////////////////////////////////////////////////
class Tokenizer
{
public:
///\cond HIDDEN_SYMBOLS
typedef std::vector<std::string>::const_iterator iterator;
///\endcond
//----------------------------------------------------------------------------------------------------------
/// ctor : default string is "", default delimiter is " "
Tokenizer(const std::string& record = "", char delimiter = ' ')
{
/*std::cout << "Tokenizer::Tokenizer(\'" <<record<< "\' , \'"<<delimiter << "\')" << std::endl;*/
m_character_delimiter = delimiter;
assign(record);
}
//----------------------------------------------------------------------------------------------------------
/// copy ctor
Tokenizer(const Tokenizer& another)
{
/*std::cout << "Tokenizer::Tokenizer(const Tokenizer&)" << std::endl;*/
m_character_delimiter = another.m_character_delimiter;
m_vec_tokens = another.m_vec_tokens;
}
//----------------------------------------------------------------------------------------------------------
/// dtor
virtual ~Tokenizer()
{
/*std::cout << "Tokenizer::~Tokenizer()" << std::endl;*/;
}
//----------------------------------------------------------------------------------------------------------
/// affectation operator
Tokenizer& operator=(const Tokenizer &another)
{
/*std::cout << "Tokenizer& operator=(" << another << ")" << std::endl;*/
if(this != &another)
{
m_vec_tokens.clear();
m_character_delimiter = another.m_character_delimiter;
m_vec_tokens = another.m_vec_tokens;
}
return *this;
}
//----------------------------------------------------------------------------------------------------------
/// tokenize a new string
void assign(const std::string& record)
{
/*std::cout << "Tokenizer::setString("<<record<<")" << std::endl;*/
std::stringstream ss(record);
std::string field;
m_vec_tokens.clear();
while(getline(ss, field, m_character_delimiter))
m_vec_tokens.push_back(trim(field));
}
//----------------------------------------------------------------------------------------------------------
/// iterator allow browsing the list of each token
iterator begin() const
{
return m_vec_tokens.begin();
}
//----------------------------------------------------------------------------------------------------------
/// iterator allow browsing the list of each token
iterator end() const
{
return m_vec_tokens.end();
}
//----------------------------------------------------------------------------------------------------------
/// return a token at index
const std::string operator[](unsigned int index) const
{
/*std::cout << "const string Tokenizer::operator[](" << index << ")" << std::endl;*/
//if(index < 0)
// throw std::logic_error("Tokenizer() - index Overflow - index must be positive or null !");
if(index >= m_vec_tokens.size())
throw std::logic_error("Tokenizer() - index Overflow - index must be less than the size of available token !");
return m_vec_tokens.at(index);
}
//----------------------------------------------------------------------------------------------------------
/// return the number of available tokens
int count(void) const
{
return m_vec_tokens.size();
}
private:
/// remove (whitespace, tab) from the string
std::string trim(const std::string& field)
{
std::string::size_type start = field.find_first_not_of(" \t\v");
return field.substr(start, std::string::npos);
}
/// list of tokens
std::vector<std::string> m_vec_tokens;
/// delimiter character
char m_character_delimiter;
};
#endif /* TOKENIZER_H_ */