/* 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"
#include <string.h>

PR_IMPLEMENT(char*)
PL_strcpy(char* dest, const char* src)
{
    if (((char*)0 == dest) || ((const char*)0 == src)) {
        return (char*)0;
    }

    return strcpy(dest, src);
}

PR_IMPLEMENT(char*)
PL_strncpy(char* dest, const char* src, PRUint32 max)
{
    char* rv;

    if ((char*)0 == dest) {
        return (char*)0;
    }
    if ((const char*)0 == src) {
        return (char*)0;
    }

    for (rv = dest; max && ((*dest = *src) != 0); dest++, src++, max--)
        ;

#ifdef JLRU
    /* XXX I (wtc) think the -- and ++ operators should be postfix. */
    while (--max) {
        *++dest = '\0';
    }
#endif /* JLRU */

    return rv;
}

PR_IMPLEMENT(char*)
PL_strncpyz(char* dest, const char* src, PRUint32 max)
{
    char* rv;

    if ((char*)0 == dest) {
        return (char*)0;
    }
    if ((const char*)0 == src) {
        return (char*)0;
    }
    if (0 == max) {
        return (char*)0;
    }

    for (rv = dest, max--; max && ((*dest = *src) != 0); dest++, src++, max--)
        ;

    *dest = '\0';

    return rv;
}