stringutils.cpp

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/***************************************************************************
*   Copyright (C) 2005-2019 by the FIFE team                              *
*   http://www.fifengine.net                                              *
*   This file is part of FIFE.                                            *
*                                                                         *
*   FIFE is free software; you can redistribute it and/or                 *
*   modify it under the terms of the GNU Lesser General Public            *
*   License as published by the Free Software Foundation; either          *
*   version 2.1 of the License, or (at your option) any later version.    *
*                                                                         *
*   This library is distributed in the hope that it will be useful,       *
*   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
*   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU     *
*   Lesser General Public License for more details.                       *
*                                                                         *
*   You should have received a copy of the GNU Lesser General Public      *
*   License along with this library; if not, write to the                 *
*   Free Software Foundation, Inc.,                                       *
*   51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA          *
***************************************************************************/

// Standard C++ library includes
#include <cstdio>

// FIFE includes
// These includes are split up in two parts, separated by one empty line
// First block: files included from the FIFE root src directory
// Second block: files included from the same folder
#include "stringutils.h"

namespace FIFE {
    int32_t makeInt32(const std::string& str) {
        int32_t ret;
        sscanf(str.c_str(), "%d", &ret);
        return ret;
    }

    IntVector tokenize(const std::string& str, char delim, char group) {
        IntVector tokens;
        if(str.empty()) {
            return tokens;
        }

        int curr = 0;
        int start = 0;

        start = curr = static_cast<int>(str.find_first_not_of(delim));

        while(str[curr]) {
            if(str[curr] == group) {
                curr = static_cast<int>(str.find_first_of(group, curr+1));
                if((size_t)curr == std::string::npos) {
                    return IntVector();
                }

                std::string token = str.substr(start+1, curr-start-1);
                tokens.push_back(makeInt32(token));
                start = curr + 1;
            } else if(str[curr] == delim) {
                if(str[curr-1] != delim && str[curr-1] != group) {
                    std::string token = str.substr(start, curr-start);
                    tokens.push_back(makeInt32(token));
                }
                start = curr + 1;
            }
            ++curr;
        }

        if(tokens.size() == 0) {
            tokens.push_back(makeInt32(str));
            return tokens;
        }

        if(str[curr-1] != delim && str[curr-1] != group) {
            std::string token = str.substr(start, curr - 1);
            tokens.push_back(makeInt32(token));
        }

        return tokens;
    }
}