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// © 2019 and later: Unicode, Inc. and others.
// License & terms of use: http://www.unicode.org/copyright.html
// Fuzzer for ICU Locales.
#include <algorithm>
#include <cstddef>
#include <cstdint>
#include <cstdlib>
#include <string>
#include <vector>
#include "unicode/locid.h"
namespace {
void ConsumeNBytes(const uint8_t** data, size_t* size, size_t N) {
*data += N;
*size -= N;
}
uint8_t ConsumeUint8(const uint8_t** data, size_t* size) {
uint8_t tmp = 0;
if (*size >= 1) {
tmp = (*data)[0];
ConsumeNBytes(data, size, 1);
}
return tmp;
}
std::string ConsumeSubstring(const uint8_t** data, size_t* size) {
const size_t request_size = ConsumeUint8(data, size);
const char* substring_start = reinterpret_cast<const char*>(*data);
const size_t substring_size = std::min(*size, request_size);
ConsumeNBytes(data, size, substring_size);
return std::string(substring_start, substring_size);
}
} // namespace
extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size) {
const std::string language = ConsumeSubstring(&data, &size);
const std::string country = ConsumeSubstring(&data, &size);
const std::string variant = ConsumeSubstring(&data, &size);
const std::string kv_pairs = ConsumeSubstring(&data, &size);
icu::Locale locale(language.c_str(), country.c_str(), variant.c_str(),
kv_pairs.c_str());
return EXIT_SUCCESS;
}
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