libc/src/string/strxfrm.cpp

   1 //===-- Implementation of strxfrm -----------------------------------------===//
   2 //
   3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
   4 // See https://llvm.org/LICENSE.txt for license information.
   5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
   6 //
   7 //===----------------------------------------------------------------------===//
   8
   9 #include "src/string/strxfrm.h"
  10 #include "src/string/memory_utils/inline_memcpy.h"
  11 #include "src/string/string_utils.h"
  12
  13 #include "src/__support/common.h"
  14
  15 namespace LIBC_NAMESPACE {
  16
  17 // TODO: Add support for locales.
  18 LLVM_LIBC_FUNCTION(size_t, strxfrm,
  19                    (char *__restrict dest, const char *__restrict src,
  20                     size_t n)) {
  21   size_t len = internal::string_length(src);
  22   if (n > len)
  23     inline_memcpy(dest, src, len + 1);
  24   return len;
  25 }
  26
  27 } // namespace LIBC_NAMESPACE