/* This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

#include "plstr.h"

PR_IMPLEMENT(char*)
PL_strtok_r(char* s1, const char* s2, char** lasts)
{
    const char* sepp;
    int c, sc;
    char* tok;

    if (s1 == NULL) {
        if (*lasts == NULL) {
            return NULL;
        }

        s1 = *lasts;
    }

    for (; (c = *s1) != 0; s1++) {
        for (sepp = s2; (sc = *sepp) != 0; sepp++) {
            if (c == sc) {
                break;
            }
        }
        if (sc == 0) {
            break;
        }
    }

    if (c == 0) {
        *lasts = NULL;
        return NULL;
    }

    tok = s1++;

    for (; (c = *s1) != 0; s1++) {
        for (sepp = s2; (sc = *sepp) != 0; sepp++) {
            if (c == sc) {
                *s1++ = '\0';
                *lasts = s1;
                return tok;
            }
        }
    }
    *lasts = NULL;
    return tok;
}