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source/third_party/rocketmq-client-cpp-2.2.0-source-release/libs/signature/include/base64.h

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+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You 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.
+ */
+
+#ifndef BASE64_H
+#define BASE64_H
+
+/* Get size_t. */
+#include <stddef.h>
+
+/* Get bool. */
+#include <stdbool.h>
+
+#ifdef __cplusplus
+namespace rocketmqSignature {
+#endif
+
+/* This uses that the expression (n+(k-1))/k means the smallest
+   integer >= n/k, i.e., the ceiling of n/k.  */
+#define BASE64_LENGTH(inlen) ((((inlen) + 2) / 3) * 4)
+
+extern bool isbase64(char ch);
+
+extern void base64_encode(const char* in, size_t inlen, char* out, size_t outlen);
+
+extern size_t base64_encode_alloc(const char* in, size_t inlen, char** out);
+
+extern bool base64_decode(const char* in, size_t inlen, char* out, size_t* outlen);
+
+extern bool base64_decode_alloc(const char* in, size_t inlen, char** out, size_t* outlen);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* BASE64_H */