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/__support/ctype_utils.h" 12 #include "src/__support/macros/config.h" 13 #include "src/stdio/scanf_core/converter_utils.h" 14 #include "src/stdio/scanf_core/core_structs.h" 15 #include "src/stdio/scanf_core/int_converter.h" 16 #include "src/stdio/scanf_core/reader.h" 17 18 #include <stddef.h> 19 20 namespace LIBC_NAMESPACE_DECL { 21 namespace scanf_core { 22 int convert_pointer(Reader *reader, const FormatSection &to_conv) { 23 static const char nullptr_string[] = "(nullptr)"; 24 25 // Check if it's exactly the nullptr string, if so then it's a nullptr. 26 char cur_char = reader->getc(); 27 size_t i = 0; 28 for (; i < (sizeof(nullptr_string) - 1) && 29 internal::tolower(cur_char) == nullptr_string[i]; 30 ++i) { 31 cur_char = reader->getc(); 32 } 33 if (i == (sizeof(nullptr_string) - 1)) { 34 *reinterpret_cast<void **>(to_conv.output_ptr) = nullptr; 35 return READ_OK; 36 } else if (i > 0) { 37 return MATCHING_FAILURE; 38 } 39 40 reader->ungetc(cur_char); 41 42 // Else treat it as a hex int 43 return convert_int(reader, to_conv); 44 } 45 } // namespace scanf_core 46 } // namespace LIBC_NAMESPACE_DECL 47