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/__support/macros/config.h"
  11 #include "src/string/memory_utils/inline_memcpy.h"
  12 #include "src/string/string_utils.h"
  13
  14 #include "src/__support/common.h"
  15
  16 namespace LIBC_NAMESPACE_DECL {
  17
  18 // TODO: Add support for locales.
  19 LLVM_LIBC_FUNCTION(size_t, strxfrm,
  20                    (char *__restrict dest, const char *__restrict src,
  21                     size_t n)) {
  22   size_t len = internal::string_length(src);
  23   if (n > len)
  24     inline_memcpy(dest, src, len + 1);
  25   return len;
  26 }
  27
  28 } // namespace LIBC_NAMESPACE_DECL