1 //===-- Starting point for printf -------------------------------*- 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 #ifndef LLVM_LIBC_SRC_STDIO_PRINTF_CORE_PRINTF_MAIN_H 10 #define LLVM_LIBC_SRC_STDIO_PRINTF_CORE_PRINTF_MAIN_H 11 12 #include "src/__support/arg_list.h" 13 #include "src/__support/macros/config.h" 14 #include "src/stdio/printf_core/converter.h" 15 #include "src/stdio/printf_core/core_structs.h" 16 #include "src/stdio/printf_core/parser.h" 17 #include "src/stdio/printf_core/writer.h" 18 19 #include <stddef.h> 20 21 namespace LIBC_NAMESPACE_DECL { 22 namespace printf_core { 23 24 template <WriteMode write_mode> printf_main(Writer<write_mode> * writer,const char * __restrict str,internal::ArgList & args)25int printf_main(Writer<write_mode> *writer, const char *__restrict str, 26 internal::ArgList &args) { 27 Parser<internal::ArgList> parser(str, args); 28 int result = 0; 29 for (FormatSection cur_section = parser.get_next_section(); 30 !cur_section.raw_string.empty(); 31 cur_section = parser.get_next_section()) { 32 if (cur_section.has_conv) 33 result = convert(writer, cur_section); 34 else 35 result = writer->write(cur_section.raw_string); 36 37 if (result < 0) 38 return result; 39 } 40 41 return writer->get_chars_written(); 42 } 43 44 } // namespace printf_core 45 } // namespace LIBC_NAMESPACE_DECL 46 47 #endif // LLVM_LIBC_SRC_STDIO_PRINTF_CORE_PRINTF_MAIN_H 48