| 1 | //===-- Implementation of vsprintf ------------------------------*- 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/vsprintf.h" |
| 10 | |
| 11 | #include "src/__support/CPP/limits.h" |
| 12 | #include "src/__support/arg_list.h" |
| 13 | #include "src/stdio/printf_core/printf_main.h" |
| 14 | #include "src/stdio/printf_core/writer.h" |
| 15 | |
| 16 | #include <stdarg.h> |
| 17 | |
| 18 | namespace LIBC_NAMESPACE { |
| 19 | |
| 20 | LLVM_LIBC_FUNCTION(int, vsprintf, |
| 21 | (char *__restrict buffer, const char *__restrict format, |
| 22 | va_list vlist)) { |
| 23 | internal::ArgList args(vlist); // This holder class allows for easier copying |
| 24 | // and pointer semantics, as well as handling |
| 25 | // destruction automatically. |
| 26 | |
| 27 | printf_core::WriteBuffer wb(buffer, cpp::numeric_limits<size_t>::max()); |
| 28 | printf_core::Writer writer(&wb); |
| 29 | |
| 30 | int ret_val = printf_core::printf_main(writer: &writer, str: format, args); |
| 31 | wb.buff[wb.buff_cur] = '\0'; |
| 32 | return ret_val; |
| 33 | } |
| 34 | |
| 35 | } // namespace LIBC_NAMESPACE |
| 36 |