+/*
+ * Copyright 2016 Facebook, Inc.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <folly/portability/String.h>
+
+#if !FOLLY_HAVE_MEMRCHR || defined(_WIN32) || defined(__APPLE__)
+extern "C" void* memrchr(const void* s, int c, size_t n) {
+ for (auto p = ((const char*)s) + n - 1; p >= (const char*)s; p--) {
+ if (*p == (char)c) {
+ return (void*)p;
+ }
+ }
+ return nullptr;
+}
+#endif
+
+#ifdef _WIN32
+#include <stdlib.h>
+
+extern "C" {
+char* strndup(const char* a, size_t len) {
+ auto neededLen = strlen(a);
+ if (neededLen > len) {
+ neededLen = len - 1;
+ }
+ char* buf = (char*)malloc((neededLen + 1) * sizeof(char));
+ memcpy(buf, a, neededLen);
+ buf[neededLen] = '\0';
+ return buf;
+}
+
+char* strtok_r(char* str, char const* delim, char** ctx) {
+ return strtok_s(str, delim, ctx);
+}
+}
+#endif