1*b8f134faSJoseph Huber //===-- Implementation of vfscanf -------------------------------*- C++ -*-===// 2*b8f134faSJoseph Huber // 3*b8f134faSJoseph Huber // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 4*b8f134faSJoseph Huber // See https://llvm.org/LICENSE.txt for license information. 5*b8f134faSJoseph Huber // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 6*b8f134faSJoseph Huber // 7*b8f134faSJoseph Huber //===----------------------------------------------------------------------===// 8*b8f134faSJoseph Huber 9*b8f134faSJoseph Huber #include "src/stdio/vfscanf.h" 10*b8f134faSJoseph Huber 11*b8f134faSJoseph Huber #include "src/__support/File/file.h" 12*b8f134faSJoseph Huber #include "src/__support/arg_list.h" 13*b8f134faSJoseph Huber #include "src/__support/macros/config.h" 14*b8f134faSJoseph Huber #include "src/stdio/scanf_core/vfscanf_internal.h" 15*b8f134faSJoseph Huber 16*b8f134faSJoseph Huber #include "hdr/types/FILE.h" 17*b8f134faSJoseph Huber #include <stdarg.h> 18*b8f134faSJoseph Huber 19*b8f134faSJoseph Huber namespace LIBC_NAMESPACE_DECL { 20*b8f134faSJoseph Huber 21*b8f134faSJoseph Huber LLVM_LIBC_FUNCTION(int, vfscanf, 22*b8f134faSJoseph Huber (::FILE *__restrict stream, const char *__restrict format, 23*b8f134faSJoseph Huber va_list vlist)) { 24*b8f134faSJoseph Huber internal::ArgList args(vlist); // This holder class allows for easier copying 25*b8f134faSJoseph Huber // and pointer semantics, as well as handling 26*b8f134faSJoseph Huber // destruction automatically. 27*b8f134faSJoseph Huber va_end(vlist); 28*b8f134faSJoseph Huber int ret_val = scanf_core::vfscanf_internal(stream, format, args); 29*b8f134faSJoseph Huber // This is done to avoid including stdio.h in the internals. On most systems 30*b8f134faSJoseph Huber // EOF is -1, so this will be transformed into just "return ret_val". 31*b8f134faSJoseph Huber return (ret_val == -1) ? EOF : ret_val; 32*b8f134faSJoseph Huber } 33*b8f134faSJoseph Huber 34*b8f134faSJoseph Huber } // namespace LIBC_NAMESPACE_DECL 35