libc/src/stdio/fprintf.cpp

   1 //===-- Implementation of fprintf -------------------------------*- C++ -*-===//
   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/stdio/fprintf.h"
  10
  11 #include "src/__support/File/file.h"
  12 #include "src/__support/arg_list.h"
  13 #include "src/stdio/printf_core/vfprintf_internal.h"
  14
  15 #include <stdarg.h>
  16 #include <stdio.h>
  17
  18 namespace LIBC_NAMESPACE {
  19
  20 LLVM_LIBC_FUNCTION(int, fprintf,
  21                    (::FILE *__restrict stream, const char *__restrict format,
  22                     ...)) {
  23   va_list vlist;
  24   va_start(vlist, format);
  25   internal::ArgList args(vlist); // This holder class allows for easier copying
  26                                  // and pointer semantics, as well as handling
  27                                  // destruction automatically.
  28   va_end(vlist);
  29   int ret_val = printf_core::vfprintf_internal(stream, format, args);
  30   return ret_val;
  31 }
  32
  33 } // namespace LIBC_NAMESPACE