/*
 * Copyright (c) 2011-2014, 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
 * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */
#include "NaiveTokenizer.h"
#include <cstring>

char* NaiveTokenizer::getNextToken(char** line)
{
    const char *quotes = "'\""; // single or double quotes
    char separator[2] = " ";
    char first[2];

    if (*line == NULL || (*line)[0] == '\0') {
        return NULL;
    }

    // Copy the first character into its own new string
    first[0] = (*line)[0];
    first[1] = '\0';

    // Check if the first character is a quote
    if (strstr(quotes, first) != NULL) {
        // If so, move forward and set the separator to that quote
        (*line)++;
        strncpy(separator, first, sizeof(separator));
    }
    // If it is not, get the next space-delimited token
    // First, move the cursor forward if the first character is a space
    // This effectively ignores multiple spaces in a row
    else if (strstr(separator, first) != NULL) {
        (*line)++;
        return NaiveTokenizer::getNextToken(line);
    }

    return strsep(line, separator);
}