| //===-- Implementation of sprintf -------------------------------*- C++ -*-===// |
| // |
| // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
| // See https://llvm.org/LICENSE.txt for license information. |
| // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
| // |
| //===----------------------------------------------------------------------===// |
| |
| #include "src/stdio/sprintf.h" |
| |
| #include "src/__support/arg_list.h" |
| #include "src/stdio/printf_core/printf_main.h" |
| #include "src/stdio/printf_core/string_writer.h" |
| #include "src/stdio/printf_core/writer.h" |
| |
| #include <stdarg.h> |
| |
| namespace __llvm_libc { |
| |
| LLVM_LIBC_FUNCTION(int, sprintf, |
| (char *__restrict buffer, const char *__restrict format, |
| ...)) { |
| va_list vlist; |
| va_start(vlist, format); |
| internal::ArgList args(vlist); // This holder class allows for easier copying |
| // and pointer semantics, as well as handling |
| // destruction automatically. |
| va_end(vlist); |
| printf_core::StringWriter str_writer(buffer); |
| printf_core::Writer writer(reinterpret_cast<void *>(&str_writer), |
| printf_core::StringWriter::write_str, |
| printf_core::StringWriter::write_chars, |
| printf_core::StringWriter::write_char); |
| |
| int ret_val = printf_core::printf_main(&writer, format, args); |
| str_writer.terminate(); |
| return ret_val; |
| } |
| |
| } // namespace __llvm_libc |