1*ff6fe39eSMichael Jones //===-- Implementation of sprintf -------------------------------*- C++ -*-===//
2*ff6fe39eSMichael Jones //
3*ff6fe39eSMichael Jones // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4*ff6fe39eSMichael Jones // See https://llvm.org/LICENSE.txt for license information.
5*ff6fe39eSMichael Jones // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6*ff6fe39eSMichael Jones //
7*ff6fe39eSMichael Jones //===----------------------------------------------------------------------===//
8*ff6fe39eSMichael Jones 
9*ff6fe39eSMichael Jones #include "src/stdio/sprintf.h"
10*ff6fe39eSMichael Jones 
11*ff6fe39eSMichael Jones #include "src/__support/arg_list.h"
12*ff6fe39eSMichael Jones #include "src/stdio/printf_core/printf_main.h"
13*ff6fe39eSMichael Jones #include "src/stdio/printf_core/string_writer.h"
14*ff6fe39eSMichael Jones #include "src/stdio/printf_core/writer.h"
15*ff6fe39eSMichael Jones 
16*ff6fe39eSMichael Jones #include <stdarg.h>
17*ff6fe39eSMichael Jones 
18*ff6fe39eSMichael Jones namespace __llvm_libc {
19*ff6fe39eSMichael Jones 
20*ff6fe39eSMichael Jones LLVM_LIBC_FUNCTION(int, sprintf,
21*ff6fe39eSMichael Jones                    (char *__restrict buffer, const char *__restrict format,
22*ff6fe39eSMichael Jones                     ...)) {
23*ff6fe39eSMichael Jones   va_list vlist;
24*ff6fe39eSMichael Jones   va_start(vlist, format);
25*ff6fe39eSMichael Jones   internal::ArgList args(vlist); // This holder class allows for easier copying
26*ff6fe39eSMichael Jones                                  // and pointer semantics, as well as handing
27*ff6fe39eSMichael Jones                                  // destruction automatically.
28*ff6fe39eSMichael Jones   va_end(vlist);
29*ff6fe39eSMichael Jones   printf_core::StringWriter str_writer(buffer);
30*ff6fe39eSMichael Jones   printf_core::Writer writer(reinterpret_cast<void *>(&str_writer),
31*ff6fe39eSMichael Jones                              printf_core::write_to_string);
32*ff6fe39eSMichael Jones 
33*ff6fe39eSMichael Jones   int ret_val = printf_core::printf_main(&writer, format, args);
34*ff6fe39eSMichael Jones   str_writer.terminate();
35*ff6fe39eSMichael Jones   return ret_val;
36*ff6fe39eSMichael Jones }
37*ff6fe39eSMichael Jones 
38*ff6fe39eSMichael Jones } // namespace __llvm_libc
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