1ff6fe39eSMichael Jones //===-- Implementation of sprintf -------------------------------*- C++ -*-===// 2ff6fe39eSMichael Jones // 3ff6fe39eSMichael Jones // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 4ff6fe39eSMichael Jones // See https://llvm.org/LICENSE.txt for license information. 5ff6fe39eSMichael Jones // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 6ff6fe39eSMichael Jones // 7ff6fe39eSMichael Jones //===----------------------------------------------------------------------===// 8ff6fe39eSMichael Jones 9ff6fe39eSMichael Jones #include "src/stdio/sprintf.h" 10ff6fe39eSMichael Jones 11b9f6c208SMichael Jones #include "src/__support/CPP/limits.h" 12ff6fe39eSMichael Jones #include "src/__support/arg_list.h" 13*5ff3ff33SPetr Hosek #include "src/__support/macros/config.h" 14ff6fe39eSMichael Jones #include "src/stdio/printf_core/printf_main.h" 15ff6fe39eSMichael Jones #include "src/stdio/printf_core/writer.h" 16ff6fe39eSMichael Jones 17ff6fe39eSMichael Jones #include <stdarg.h> 18ff6fe39eSMichael Jones 19*5ff3ff33SPetr Hosek namespace LIBC_NAMESPACE_DECL { 20ff6fe39eSMichael Jones 21ff6fe39eSMichael Jones LLVM_LIBC_FUNCTION(int, sprintf, 22ff6fe39eSMichael Jones (char *__restrict buffer, const char *__restrict format, 23ff6fe39eSMichael Jones ...)) { 24ff6fe39eSMichael Jones va_list vlist; 25ff6fe39eSMichael Jones va_start(vlist, format); 26ff6fe39eSMichael Jones internal::ArgList args(vlist); // This holder class allows for easier copying 279f1d905fSMichael Jones // and pointer semantics, as well as handling 28ff6fe39eSMichael Jones // destruction automatically. 29ff6fe39eSMichael Jones va_end(vlist); 30b9f6c208SMichael Jones 31b9f6c208SMichael Jones printf_core::WriteBuffer wb(buffer, cpp::numeric_limits<size_t>::max()); 32b9f6c208SMichael Jones printf_core::Writer writer(&wb); 33ff6fe39eSMichael Jones 34ff6fe39eSMichael Jones int ret_val = printf_core::printf_main(&writer, format, args); 35b9f6c208SMichael Jones wb.buff[wb.buff_cur] = '\0'; 36ff6fe39eSMichael Jones return ret_val; 37ff6fe39eSMichael Jones } 38ff6fe39eSMichael Jones 39*5ff3ff33SPetr Hosek } // namespace LIBC_NAMESPACE_DECL 40