/* 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;
}