1 /*
2  * Copyright (C) 2019 The Android Open Source Project
3  *
4  * Licensed under the Apache License, Version 2.0 (the "License");
5  * you may not use this file except in compliance with the License.
6  * You may obtain a copy of the License at
7  *
8  *      http://www.apache.org/licenses/LICENSE-2.0
9  *
10  * Unless required by applicable law or agreed to in writing, software
11  * distributed under the License is distributed on an "AS IS" BASIS,
12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13  * See the License for the specific language governing permissions and
14  * limitations under the License.
15  */
16 #define FUZZ_LOG_TAG "util"
17 #include "util.h"
18 
19 #include <android-base/logging.h>
20 
21 #include <iomanip>
22 #include <sstream>
23 
hexString(const void * bytes,size_t len)24 std::string hexString(const void* bytes, size_t len) {
25     if (bytes == nullptr) return "<null>";
26 
27     const uint8_t* bytes8 = static_cast<const uint8_t*>(bytes);
28     char chars[] = "0123456789abcdef";
29     std::string result;
30     result.resize(len * 2);
31 
32     for (size_t i = 0; i < len; i++) {
33         result[2 * i] = chars[bytes8[i] >> 4];
34         result[2 * i + 1] = chars[bytes8[i] & 0xf];
35     }
36 
37     return result;
38 }
hexString(const std::vector<uint8_t> & bytes)39 std::string hexString(const std::vector<uint8_t>& bytes) {
40     return hexString(bytes.data(), bytes.size());
41 }
42