1 files changed, 53 insertions, 0 deletions
diff --git a/projects/icu/fuzzer_utils.h b/projects/icu/fuzzer_utils.h
new file mode 100644
index 00000000..d879bc39
--- /dev/null
+++ b/projects/icu/fuzzer_utils.h
@@ -0,0 +1,53 @@
+// Copyright 2016 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef FUZZER_UTILS_H_
+#define FUZZER_UTILS_H_
+
+#include <assert.h>
+#include <algorithm>
+#include <random>
+
+#include "unicode/locid.h"
+#include "unicode/uchar.h"
+
+struct IcuEnvironment {
+  IcuEnvironment() {
+    // nothing to initialize yet;
+  }
+};
+
+// Create RNG and seed it from data.
+std::mt19937_64 CreateRng(const uint8_t* data, size_t size) {
+  std::mt19937_64 rng;
+  std::string str = std::string(reinterpret_cast<const char*>(data), size);
+  std::size_t data_hash = std::hash<std::string>()(str);
+  rng.seed(data_hash);
+  return rng;
+}
+
+const icu::Locale& GetRandomLocale(std::mt19937_64* rng) {
+  int32_t num_locales = 0;
+  const icu::Locale* locales = icu::Locale::getAvailableLocales(num_locales);
+  assert(num_locales > 0);
+  return locales[(*rng)() % num_locales];
+}
+
+icu::UnicodeString UnicodeStringFromUtf8(const uint8_t* data, size_t size) {
+  return icu::UnicodeString::fromUTF8(
+      icu::StringPiece(reinterpret_cast<const char*>(data), size));
+}
+
+icu::UnicodeString UnicodeStringFromUtf32(const uint8_t* data, size_t size) {
+  std::vector<UChar32> uchars;
+  uchars.resize(size * sizeof(uint8_t) / (sizeof(UChar32)));
+  memcpy(uchars.data(), data, uchars.size() * sizeof(UChar32));
+  for (size_t i = 0; i < uchars.size(); ++i) {
+    uchars[i] = std::min(uchars[i], UCHAR_MAX_VALUE);
+  }
+
+  return icu::UnicodeString::fromUTF32(uchars.data(), uchars.size());
+}
+
+#endif  // FUZZER_UTILS_H_