blob: 205b58fb3390e9563385dd2ddae3b0dcf52a3762 [file] [log] [blame]
//===-- Implementation of sscanf --------------------------------*- C++ -*-===//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
#include "src/stdio/sscanf.h"
#include "src/__support/arg_list.h"
#include "src/stdio/scanf_core/reader.h"
#include "src/stdio/scanf_core/scanf_main.h"
#include "src/stdio/scanf_core/string_reader.h"
#include <stdarg.h>
#include <stdio.h>
namespace __llvm_libc {
(const char *__restrict buffer,
const char *__restrict format, ...)) {
va_list vlist;
va_start(vlist, format);
internal::ArgList args(vlist); // This holder class allows for easier copying
// and pointer semantics, as well as handling
// destruction automatically.
scanf_core::StringReader string_reader(buffer);
scanf_core::Reader reader(&string_reader);
int ret_val = scanf_core::scanf_main(&reader, format, args);
// This is done to avoid including stdio.h in the internals. On most systems
// EOF is -1, so this will be transformed into just "return ret_val".
return (ret_val == -1) ? EOF : ret_val;
} // namespace __llvm_libc