/*
 * This file is part of MPlayer.
 *
 * MPlayer is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * MPlayer 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 General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License along
 * with MPlayer; if not, write to the Free Software Foundation, Inc.,
 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
 */

/**
 * @file
 * @brief Parser helpers
 */

#include <stdlib.h>
#include <string.h>

#include "cut.h"

/**
 * @brief Extract a part of a string delimited by a separator character.
 *
 * @param in string to be analyzed
 * @param out pointer suitable to store the extracted part
 * @param sep separator character
 * @param num number of separator characters to be skipped before extraction starts
 * @param maxout maximum length of extracted part (including the trailing null byte)
 */
void cutItemString(char *in, char *out, char sep, int num, size_t maxout)
{
    int n;
    unsigned int i, c;

    for (c = 0, n = 0, i = 0; in[i]; i++) {
        if (in[i] == sep)
            n++;
        if (n >= num && in[i] != sep && c + 1 < maxout)
            out[c++] = in[i];
        if (n >= num && in[i + 1] == sep)
            break;
    }

    if (c < maxout)
        out[c] = 0;
}

/**
 * @brief Extract a numeric part of a string delimited by a separator character.
 *
 * @param in string to be analyzed
 * @param sep separator character
 * @param num number of separator characters to be skipped before extraction starts
 *
 * @return extracted number (numeric part)
 */
int cutItemToInt(char *in, char sep, int num)
{
    char tmp[64];

    cutItem(in, tmp, sep, num);

    return atoi(tmp);
}