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// © 2023 and later: Unicode, Inc. and others.
// License & terms of use: http://www.unicode.org/copyright.html
// Fuzzer for ICU PluralRules.
#include <cstring>
#include "fuzzer_utils.h"
#include "unicode/plurrule.h"
#include "unicode/locid.h"
void TestPluralRules(icu::PluralRules* pp, int32_t number, double dbl, UErrorCode& status) {
if (U_FAILURE(status)) {
return;
}
pp->select(number);
pp->select(dbl);
}
void TestPluralRulesWithLocale(
const icu::Locale& locale, int32_t number, double dbl, UPluralType type, UErrorCode& status) {
if (U_FAILURE(status)) {
return;
}
std::unique_ptr<icu::PluralRules> pp(icu::PluralRules::forLocale(locale, status));
TestPluralRules(pp.get(), number, dbl, status);
status = U_ZERO_ERROR;
pp.reset(icu::PluralRules::forLocale(locale, type, status));
TestPluralRules(pp.get(), number, dbl, status);
type = static_cast<UPluralType>(
static_cast<int>(type) % (static_cast<int>(UPLURAL_TYPE_COUNT)));
status = U_ZERO_ERROR;
pp.reset(icu::PluralRules::forLocale(locale, type, status));
TestPluralRules(pp.get(), number, dbl, status);
}
extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size) {
uint16_t rnd;
int32_t number;
double dbl;
UPluralType type;
if (size > 5000) {
size = 5000;
}
if (size < sizeof(rnd) + sizeof(number) + sizeof(dbl) + sizeof(type)) return 0;
icu::StringPiece fuzzData(reinterpret_cast<const char *>(data), size);
std::memcpy(&rnd, fuzzData.data(), sizeof(rnd));
icu::Locale locale = GetRandomLocale(rnd);
fuzzData.remove_prefix(sizeof(rnd));
std::memcpy(&number, fuzzData.data(), sizeof(number));
fuzzData.remove_prefix(sizeof(number));
std::memcpy(&dbl, fuzzData.data(), sizeof(dbl));
fuzzData.remove_prefix(sizeof(dbl));
std::memcpy(&type, fuzzData.data(), sizeof(type));
fuzzData.remove_prefix(sizeof(type));
size_t len = fuzzData.size() / sizeof(char16_t);
icu::UnicodeString text(false, reinterpret_cast<const char16_t*>(fuzzData.data()), len);
UErrorCode status = U_ZERO_ERROR;
std::unique_ptr<icu::PluralRules> pp(
icu::PluralRules::createRules(text, status));
TestPluralRules(pp.get(), number, dbl, status);
status = U_ZERO_ERROR;
TestPluralRulesWithLocale(locale, number, dbl, type, status);
std::string str(fuzzData.data(), fuzzData.size()); // ensure null-terminate
// by std::string c_str
icu::Locale locale2(str.c_str());
status = U_ZERO_ERROR;
TestPluralRulesWithLocale(locale2, number, dbl, type, status);
return EXIT_SUCCESS;
}
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