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/* MIT License
*
* Copyright (c) 1998 Massachusetts Institute of Technology
* Copyright (c) The c-ares project and its contributors
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice (including the next
* paragraph) shall be included in all copies or substantial portions of the
* Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*
* SPDX-License-Identifier: MIT
*/
#include "ares_setup.h"
#include "ares_strcasecmp.h"
#ifndef HAVE_STRCASECMP
int ares_strcasecmp(const char *a, const char *b)
{
# if defined(HAVE_STRCMPI)
return strcmpi(a, b);
# elif defined(HAVE_STRICMP)
return stricmp(a, b);
# else
size_t i;
for (i = 0; i < (size_t)-1; i++) {
int c1 = ISUPPER(a[i]) ? tolower(a[i]) : a[i];
int c2 = ISUPPER(b[i]) ? tolower(b[i]) : b[i];
if (c1 != c2) {
return c1 - c2;
}
if (!c1) {
break;
}
}
return 0;
# endif
}
#endif
#ifndef HAVE_STRNCASECMP
int ares_strncasecmp(const char *a, const char *b, size_t n)
{
# if defined(HAVE_STRNCMPI)
return strncmpi(a, b, n);
# elif defined(HAVE_STRNICMP)
return strnicmp(a, b, n);
# else
size_t i;
for (i = 0; i < n; i++) {
int c1 = ISUPPER(a[i]) ? tolower(a[i]) : a[i];
int c2 = ISUPPER(b[i]) ? tolower(b[i]) : b[i];
if (c1 != c2) {
return c1 - c2;
}
if (!c1) {
break;
}
}
return 0;
# endif
}
#endif
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