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// © 2023 and later: Unicode, Inc. and others.
// License & terms of use: http://www.unicode.org/copyright.html
// Fuzzer for ICU Calendar.
#include <cstring>
#include "fuzzer_utils.h"
#include "unicode/datefmt.h"
#include "unicode/locid.h"
extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size) {
uint16_t rnd;
uint8_t rnd2;
UDate date;
icu::DateFormat::EStyle styles[] = {
icu::DateFormat::EStyle::kNone,
icu::DateFormat::EStyle::kFull,
icu::DateFormat::EStyle::kLong,
icu::DateFormat::EStyle::kMedium,
icu::DateFormat::EStyle::kShort,
icu::DateFormat::EStyle::kDateOffset,
icu::DateFormat::EStyle::kDateTime,
icu::DateFormat::EStyle::kDateTimeOffset,
icu::DateFormat::EStyle::kRelative,
icu::DateFormat::EStyle::kFullRelative,
icu::DateFormat::EStyle::kLongRelative,
icu::DateFormat::EStyle::kMediumRelative,
icu::DateFormat::EStyle::kShortRelative,
};
int32_t numStyles = sizeof(styles) / sizeof(icu::DateFormat::EStyle);
icu::DateFormat::EStyle dateStyle;
icu::DateFormat::EStyle timeStyle;
if (size < sizeof(rnd) + sizeof(date) + 2*sizeof(rnd2) +
sizeof(dateStyle) + sizeof(timeStyle) ) {
return 0;
}
icu::StringPiece fuzzData(reinterpret_cast<const char *>(data), size);
std::memcpy(&rnd, fuzzData.data(), sizeof(rnd));
fuzzData.remove_prefix(sizeof(rnd));
icu::Locale locale = GetRandomLocale(rnd);
std::memcpy(&dateStyle, fuzzData.data(), sizeof(dateStyle));
fuzzData.remove_prefix(sizeof(dateStyle));
std::memcpy(&timeStyle, fuzzData.data(), sizeof(timeStyle));
fuzzData.remove_prefix(sizeof(timeStyle));
std::memcpy(&rnd2, fuzzData.data(), sizeof(rnd2));
icu::DateFormat::EStyle dateStyle2 = styles[rnd2 % numStyles];
fuzzData.remove_prefix(sizeof(rnd2));
std::memcpy(&rnd2, fuzzData.data(), sizeof(rnd2));
icu::DateFormat::EStyle timeStyle2 = styles[rnd2 % numStyles];
fuzzData.remove_prefix(sizeof(rnd2));
std::memcpy(&date, fuzzData.data(), sizeof(date));
fuzzData.remove_prefix(sizeof(date));
std::unique_ptr<icu::DateFormat> df(
icu::DateFormat::createDateTimeInstance(dateStyle, timeStyle, locale));
icu::UnicodeString appendTo;
df->format(date, appendTo);
df.reset(
icu::DateFormat::createDateTimeInstance(dateStyle2, timeStyle2, locale));
appendTo.remove();
df->format(date, appendTo);
icu::UnicodeString skeleton = icu::UnicodeString::fromUTF8(fuzzData);
UErrorCode status = U_ZERO_ERROR;
appendTo.remove();
df.reset(icu::DateFormat::createInstanceForSkeleton(skeleton, status));
if (U_SUCCESS(status)) {
df->format(date, appendTo);
}
status = U_ZERO_ERROR;
appendTo.remove();
df.reset(icu::DateFormat::createInstanceForSkeleton(skeleton, locale, status));
if (U_SUCCESS(status)) {
df->format(date, appendTo);
}
std::string str(fuzzData.data(), fuzzData.size());
icu::Locale locale2(str.c_str());
df.reset(
icu::DateFormat::createDateTimeInstance(dateStyle, timeStyle, locale2));
df.reset(
icu::DateFormat::createDateTimeInstance(dateStyle2, timeStyle2, locale2));
return EXIT_SUCCESS;
}
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