mirror of https://github.com/google/oss-fuzz.git
54 lines
1.5 KiB
C++
54 lines
1.5 KiB
C++
// Copyright 2016 The Chromium Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#ifndef FUZZER_UTILS_H_
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#define FUZZER_UTILS_H_
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#include <assert.h>
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#include <algorithm>
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#include <random>
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#include "unicode/locid.h"
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#include "unicode/uchar.h"
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struct IcuEnvironment {
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IcuEnvironment() {
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// nothing to initialize yet;
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}
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};
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// Create RNG and seed it from data.
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std::mt19937_64 CreateRng(const uint8_t* data, size_t size) {
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std::mt19937_64 rng;
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std::string str = std::string(reinterpret_cast<const char*>(data), size);
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std::size_t data_hash = std::hash<std::string>()(str);
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rng.seed(data_hash);
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return rng;
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}
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const icu::Locale& GetRandomLocale(std::mt19937_64* rng) {
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int32_t num_locales = 0;
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const icu::Locale* locales = icu::Locale::getAvailableLocales(num_locales);
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assert(num_locales > 0);
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return locales[(*rng)() % num_locales];
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}
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icu::UnicodeString UnicodeStringFromUtf8(const uint8_t* data, size_t size) {
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return icu::UnicodeString::fromUTF8(
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icu::StringPiece(reinterpret_cast<const char*>(data), size));
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}
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icu::UnicodeString UnicodeStringFromUtf32(const uint8_t* data, size_t size) {
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std::vector<UChar32> uchars;
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uchars.resize(size * sizeof(uint8_t) / (sizeof(UChar32)));
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memcpy(uchars.data(), data, uchars.size() * sizeof(UChar32));
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for (size_t i = 0; i < uchars.size(); ++i) {
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uchars[i] = std::min(uchars[i], UCHAR_MAX_VALUE);
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}
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return icu::UnicodeString::fromUTF32(uchars.data(), uchars.size());
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}
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#endif // FUZZER_UTILS_H_
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