94 lines
2.3 KiB
C++
94 lines
2.3 KiB
C++
/*
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* This file is part of the Owl Positioning System (OwlPS) project.
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* It is subject to the copyright notice and license terms in the
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* COPYRIGHT.t2t file found in the top-level directory of this
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* distribution and at
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* https://code.lm7.fr/mcy/owlps/src/master/COPYRIGHT.t2t
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* No part of the OwlPS Project, including this file, may be copied,
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* modified, propagated, or distributed except according to the terms
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* contained in the COPYRIGHT.t2t file; the COPYRIGHT.t2t file must be
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* distributed along with this file, either separately or by replacing
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* this notice by the COPYRIGHT.t2t file's contents.
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*/
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#ifndef _OWLPS_POSITIONING_CSVREADER_HH_
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#define _OWLPS_POSITIONING_CSVREADER_HH_
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class Point3D ;
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#include "timestamp.hh"
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#include <boost/tokenizer.hpp>
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#include <boost/lexical_cast.hpp>
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/// Processes CSV strings, allowing to read them field by field
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class CSVStringReader
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{
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protected:
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const char separator ;
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std::string str ;
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boost::tokenizer<boost::escaped_list_separator<char> > *current_token ;
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boost::tokenizer<boost::escaped_list_separator<char> >::const_iterator
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token_iterator ;
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unsigned int current_field_nb ;
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void print_error_cast(void) const ;
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public:
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explicit CSVStringReader(const char _separator = ';'):
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separator(_separator), current_token(nullptr), current_field_nb(0) {}
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CSVStringReader(const std::string &_str, const char _separator = ';') ;
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virtual ~CSVStringReader(void) ;
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/** @name Accessors */
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//@{
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/// Set a new string to process
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void set_str(const std::string &_str) ;
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//@}
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/** @name Operations */
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//@{
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/// Reads the next field of the current line
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template<class T> bool read_field(T &field) ;
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/// Reads the next field that should be a Timestamp
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bool read_timestamp(Timestamp &t) ;
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/// Reads the next 3 fields that should form a Point3D
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bool read_point3d(Point3D &p) ;
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//@}
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} ;
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/* *** Operations *** */
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template<class T>
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inline bool CSVStringReader::read_field(T &field)
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{
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if (token_iterator == current_token->end())
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return false ;
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++current_field_nb ;
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try
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{
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field = boost::lexical_cast<T>(*token_iterator) ;
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}
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catch (boost::bad_lexical_cast &e)
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{
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print_error_cast() ;
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return false ;
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}
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++token_iterator ;
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return true ;
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}
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#endif // _OWLPS_POSITIONING_CSVREADER_HH_
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