1//===-- Int type specifier converters for scanf -----------------*- 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/scanf_core/ptr_converter.h"
10
11#include "src/stdio/scanf_core/converter_utils.h"
12#include "src/stdio/scanf_core/core_structs.h"
13#include "src/stdio/scanf_core/int_converter.h"
14#include "src/stdio/scanf_core/reader.h"
15
16#include <stddef.h>
17
18namespace LIBC_NAMESPACE {
19namespace scanf_core {
20int convert_pointer(Reader *reader, const FormatSection &to_conv) {
21 static const char nullptr_string[] = "(nullptr)";
22
23 // Check if it's exactly the nullptr string, if so then it's a nullptr.
24 char cur_char = reader->getc();
25 size_t i = 0;
26 for (; i < sizeof(nullptr_string) && to_lower(a: cur_char) == nullptr_string[i];
27 ++i) {
28 cur_char = reader->getc();
29 }
30 if (i == (sizeof(nullptr_string) - 1)) {
31 *reinterpret_cast<void **>(to_conv.output_ptr) = nullptr;
32 return READ_OK;
33 } else if (i > 0) {
34 return MATCHING_FAILURE;
35 }
36
37 reader->ungetc(c: cur_char);
38
39 // Else treat it as a hex int
40 return convert_int(reader, to_conv);
41}
42} // namespace scanf_core
43} // namespace LIBC_NAMESPACE
44

source code of libc/src/stdio/scanf_core/ptr_converter.cpp