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/*
* Copyright 2009-2011 The VOTCA Development Team (http://www.votca.org)
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*/
#ifndef _tools_H
#define _tools_H
#include <string>
#include <vector>
#include <boost/tokenizer.hpp>
#include <boost/lexical_cast.hpp>
namespace votca { namespace tools {
/**
* \brief break string into words
*
* This class wraps boost::tokenizer to break a string into words. A list of
* delimeters can be freely choosen.
*/
class Tokenizer
{
public:
typedef boost::tokenizer<boost::char_separator<char> >::iterator
iterator;
/**
* \brief startup tokenization
* @param str string to break up
* @param separators list of separators
*
* After initialization,the words can be accessed using the iterator
* interface or directly transferred to a vector ToVector of ConvertToVector.
*/
Tokenizer(const std::string &str, const char *separators) {
_str = str;
boost::char_separator<char> sep(separators);
tok = new boost::tokenizer<boost::char_separator<char> >(_str, sep);
//boost::escaped_list_separator<char> sep(" ", separators, "\"");
//tok = new boost::tokenizer<boost::escaped_list_separator<char> >(str, sep);
}
~Tokenizer() {
delete tok;
}
/**
* \brief iterator to first element
* @return begin iterator
*/
iterator begin() { return tok->begin(); }
/**
* \brief end iterator
* @return end iterator
*/
iterator end() { return tok->end(); }
/**
* \brief store all words in a vector of strings.
* @param v storage vector
*
* This class appends all words to a vector of strings.
*/
void ToVector(std::vector<std::string> &v) {
for(iterator iter=begin(); iter!=end(); ++iter)
v.push_back(*iter);
}
/**
* \brief store all words in a vector with type conversion.
* @param v storage vector
*
* This class appends all words to a vector of arbitrary type (e.g. double)
* and also does type conversion.
*/
template < typename T >
void ConvertToVector(std::vector<T> &v){
std::vector<std::string> tmp;
ToVector(tmp);
v.resize(tmp.size());
typename std::vector<T>::iterator viter = v.begin();
typename std::vector<std::string>::iterator iter;
for(iter = tmp.begin(); iter!=tmp.end(); ++iter, ++viter)
*viter = boost::lexical_cast<T, std::string>(*iter);
}
private:
boost::tokenizer< boost::char_separator<char> > *tok;
std::string _str;
};
int wildcmp(const char *wild, const char *string);
}}
#endif /* _tools_H */
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