source: XMLIO_V2/external/include/Poco/StringTokenizer.h @ 80

//
// StringTokenizer.h
//
// $Id: //poco/1.3/Foundation/include/Poco/StringTokenizer.h#2 $
//
// Library: Foundation
// Package: Core
// Module:  StringTokenizer
//
// Definition of the StringTokenizer class.
//
// Copyright (c) 2004-2006, Applied Informatics Software Engineering GmbH.
// and Contributors.
//
// Permission is hereby granted, free of charge, to any person or organization
// obtaining a copy of the software and accompanying documentation covered by
// this license (the "Software") to use, reproduce, display, distribute,
// execute, and transmit the Software, and to prepare derivative works of the
// Software, and to permit third-parties to whom the Software is furnished to
// do so, all subject to the following:
// 
// The copyright notices in the Software and this entire statement, including
// the above license grant, this restriction and the following disclaimer,
// must be included in all copies of the Software, in whole or in part, and
// all derivative works of the Software, unless such copies or derivative
// works are solely in the form of machine-executable object code generated by
// a source language processor.
// 
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE, TITLE AND NON-INFRINGEMENT. IN NO EVENT
// SHALL THE COPYRIGHT HOLDERS OR ANYONE DISTRIBUTING THE SOFTWARE BE LIABLE
// FOR ANY DAMAGES OR OTHER LIABILITY, WHETHER IN CONTRACT, TORT OR OTHERWISE,
// ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
// DEALINGS IN THE SOFTWARE.
//


#ifndef Foundation_StringTokenizer_INCLUDED
#define Foundation_StringTokenizer_INCLUDED


#include "Poco/Foundation.h"
#include "Poco/Exception.h"
#include <vector>
#include <cstddef>


namespace Poco {


class Foundation_API StringTokenizer
        /// A simple tokenizer that splits a string into
        /// tokens, which are separated by separator characters.
        /// An iterator is used to iterate over all tokens.
{
public:
        enum Options
        {
                TOK_IGNORE_EMPTY = 1, /// ignore empty tokens
                TOK_TRIM         = 2  /// remove leading and trailing whitespace from tokens
        };
        
        typedef std::vector<std::string>::const_iterator Iterator;
        
        StringTokenizer(const std::string& str, const std::string& separators, int options = 0);
                /// Splits the given string into tokens. The tokens are expected to be
                /// separated by one of the separator characters given in separators.
                /// Additionally, options can be specified:
                ///   * TOK_IGNORE_EMPTY: empty tokens are ignored
                ///   * TOK_TRIM: trailing and leading whitespace is removed from tokens.
                /// An empty token at the end of str is always ignored. For example,
                /// a StringTokenizer with the following arguments:
                ///     StringTokenizer(",ab,cd,", ",");
                /// will produce three tokens, "", "ab" and "cd".

        ~StringTokenizer();
                /// Destroys the tokenizer.
        
        Iterator begin() const;
        Iterator end() const;
        
        const std::string& operator [] (std::size_t index) const;
                /// Returns the index'th token.
                /// Throws a RangeException if the index is out of range.
                
        std::size_t count() const;
                /// Returns the number of tokens.

private:
        StringTokenizer(const StringTokenizer&);
        StringTokenizer& operator = (const StringTokenizer&);
        
        std::vector<std::string> _tokens;
};


//
// inlines
//


inline StringTokenizer::Iterator StringTokenizer::begin() const
{
        return _tokens.begin();
}


inline StringTokenizer::Iterator StringTokenizer::end() const
{
        return _tokens.end();
}


inline const std::string& StringTokenizer::operator [] (std::size_t index) const
{
        if (index >= _tokens.size()) throw RangeException();
        return _tokens[index];
}


inline std::size_t StringTokenizer::count() const
{
        return _tokens.size();
}


} // namespace Poco


#endif // Foundation_StringTokenizer_INCLUDED