upstream/utility/Tokenizer.h

/*
 * Copyright (c) 2015, Intel Corporation
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without modification,
 * are permitted provided that the following conditions are met:
 *
 * 1. Redistributions of source code must retain the above copyright notice, this
 * list of conditions and the following disclaimer.
 *
 * 2. Redistributions in binary form must reproduce the above copyright notice,
 * this list of conditions and the following disclaimer in the documentation and/or
 * other materials provided with the distribution.
 *
 * 3. Neither the name of the copyright holder nor the names of its contributors
 * may be used to endorse or promote products derived from this software without
 * specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR
 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
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 */
#pragma once

#include "NonCopyable.hpp"

#include <string>
#include <vector>

/** Tokenizer class
 *
 * Must be initialized with a string to be tokenized and, optionally, a string
 * of delimiters (@see Tokenizer::defaultDelimiters).
 */
class Tokenizer : private utility::NonCopyable
{
public:
    /** Constructs a Tokenizer
     *
     * @param[in] input The string to be tokenized
     * @param[in] delimiters A string containing all the token delimiters
     *            (hence, each delimiter can only be a single character)
     * @param[in] mergeDelimiters If true, consecutive delimiters are considered
     *            as one; leading and trailing delimiters are also ignored.
     *            If false, consecutive delimiters produce empty tokens
     */
    Tokenizer(const std::string &input, const std::string &delimiters = defaultDelimiters,
              bool mergeDelimiters = true);
    ~Tokenizer(){};

    /** Return a vector of all tokens
     */
    std::vector<std::string> split();

    /** Default list of delimiters (" \n\r\t\v\f") */
    static const std::string defaultDelimiters;

private:
    const std::string _input;      //< string to be tokenized
    const std::string _delimiters; //< token delimiters
    const bool _mergeDelimiters;   //< whether subsequent delimiters should be merged
};