1 // Copyright 2017 The Chromium Authors 2 // Use of this source code is governed by a BSD-style license that can be 3 // found in the LICENSE file. 4 5 #ifndef NET_BASE_HEX_UTILS_H_ 6 #define NET_BASE_HEX_UTILS_H_ 7 8 #include <string> 9 #include <string_view> 10 11 #include "net/base/net_export.h" 12 13 namespace net { 14 15 // Use base::HexEncode() for encoding to hex representation. 16 17 // Decode a hex representation like "666f6f" to a string like "foo". Crashes on 18 // invalid input in debug builds, therefore it must only be used on sanitized 19 // input (like a constant literal). If validity of input needs to be checked or 20 // partial decoding is desired, use base::HexStringToString() instead. 21 NET_EXPORT_PRIVATE std::string HexDecode(std::string_view hex); 22 23 // Return a std::string containing hex and ASCII representations of the binary 24 // buffer |input|, with offsets at the beginning of each line, in the style of 25 // hexdump. Non-printable characters will be shown as '.' in the ASCII output. 26 // Example output: 27 // "0x0000: 0090 69bd 5400 000d 610f 0189 0800 4500 ..i.T...a.....E.\n" 28 // "0x0010: 001c fb98 4000 4001 7e18 d8ef 2301 455d ....@.@.~...#.E]\n" 29 // "0x0020: 7fe2 0800 6bcb 0bc6 806e ....k....n\n" 30 NET_EXPORT_PRIVATE std::string HexDump(std::string_view input); 31 32 } // namespace net 33 34 #endif // NET_BASE_HEX_UTILS_H_ 35