// Copyright 2016 The Fuchsia Authors
// Copyright (c) 2008 Travis Geiselbrecht
//
// Use of this source code is governed by a MIT-style
// license that can be found in the LICENSE file or at
// https://opensource.org/licenses/MIT

#include <ctype.h>
#include <string.h>

int strnicmp(char const *s1, char const *s2, size_t len) {
  unsigned char c1 = '\0';
  unsigned char c2 = '\0';

  if (len > 0) {
    do {
      c1 = *s1;
      c2 = *s2;
      s1++;
      s2++;
      if (!c1)
        break;
      if (!c2)
        break;
      if (c1 == c2)
        continue;
      c1 = tolower(c1);
      c2 = tolower(c2);
      if (c1 != c2)
        break;
    } while (--len);
  }
  return (int)c1 - (int)c2;
}
#pragma weak strncasecmp = strnicmp