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/__support/macros/config.h" |
14 | #include "src/stdio/printf_core/printf_main.h" |
15 | #include "src/stdio/printf_core/writer.h" |
16 | |
17 | #include <stdarg.h> |
18 | |
19 | namespace LIBC_NAMESPACE_DECL { |
20 | |
21 | LLVM_LIBC_FUNCTION(int, vsprintf, |
22 | (char *__restrict buffer, const char *__restrict format, |
23 | va_list vlist)) { |
24 | internal::ArgList args(vlist); // This holder class allows for easier copying |
25 | // and pointer semantics, as well as handling |
26 | // destruction automatically. |
27 | |
28 | printf_core::WriteBuffer<printf_core::Mode< |
29 | printf_core::WriteMode::FILL_BUFF_AND_DROP_OVERFLOW>::value> |
30 | wb(buffer, cpp::numeric_limits<size_t>::max()); |
31 | printf_core::Writer writer(wb); |
32 | |
33 | int ret_val = printf_core::printf_main(&writer, format, args); |
34 | wb.buff[wb.buff_cur] = '\0'; |
35 | return ret_val; |
36 | } |
37 | |
38 | } // namespace LIBC_NAMESPACE_DECL |
39 | |