1//===-- Implementation of vfscanf -------------------------------*- 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/vfscanf.h"
10
11#include "src/__support/File/file.h"
12#include "src/__support/arg_list.h"
13#include "src/__support/macros/config.h"
14#include "src/stdio/scanf_core/vfscanf_internal.h"
15
16#include "hdr/types/FILE.h"
17#include <stdarg.h>
18
19namespace LIBC_NAMESPACE_DECL {
20
21LLVM_LIBC_FUNCTION(int, vfscanf,
22 (::FILE *__restrict stream, 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 va_end(vlist);
28 int ret_val = scanf_core::vfscanf_internal(stream, format, args);
29 // This is done to avoid including stdio.h in the internals. On most systems
30 // EOF is -1, so this will be transformed into just "return ret_val".
31 return (ret_val == -1) ? EOF : ret_val;
32}
33
34} // namespace LIBC_NAMESPACE_DECL
35

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source code of libc/src/stdio/generic/vfscanf.cpp