libc/src/dirent/alphasort.cpp

//===----------------------------------------------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
///
/// \file
/// Implementation of the POSIX alphasort function.
///
//===----------------------------------------------------------------------===//

#include "src/dirent/alphasort.h"

#include "hdr/types/struct_dirent.h"
#include "src/__support/common.h"
#include "src/__support/macros/null_check.h"
#include "src/string/string_utils.h"

namespace LIBC_NAMESPACE_DECL {

LLVM_LIBC_FUNCTION(int, alphasort,
                   (const struct dirent **a, const struct dirent **b)) {
  LIBC_CRASH_ON_NULLPTR(a);
  LIBC_CRASH_ON_NULLPTR(b);
  return internal::strcoll((*a)->d_name, (*b)->d_name);
}

} // namespace LIBC_NAMESPACE_DECL