35 lines
1.3 KiB
C++
35 lines
1.3 KiB
C++
//===-- Implementation of vfscanf -------------------------------*- C++ -*-===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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#include "src/stdio/vfscanf.h"
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#include "src/__support/File/file.h"
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#include "src/__support/arg_list.h"
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#include "src/__support/macros/config.h"
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#include "src/stdio/scanf_core/vfscanf_internal.h"
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#include "hdr/types/FILE.h"
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#include <stdarg.h>
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namespace LIBC_NAMESPACE_DECL {
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LLVM_LIBC_FUNCTION(int, vfscanf,
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(::FILE *__restrict stream, const char *__restrict format,
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va_list vlist)) {
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internal::ArgList args(vlist); // This holder class allows for easier copying
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// and pointer semantics, as well as handling
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// destruction automatically.
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va_end(vlist);
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int ret_val = scanf_core::vfscanf_internal(stream, format, args);
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// This is done to avoid including stdio.h in the internals. On most systems
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// EOF is -1, so this will be transformed into just "return ret_val".
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return (ret_val == -1) ? EOF : ret_val;
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}
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} // namespace LIBC_NAMESPACE_DECL
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