Compressor.h

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// Copyright 2024 libsese
//
// 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.
 
#pragma once
 
#include "sese/convert/ZlibConfig.h"
#include "sese/io/OutputStream.h"
 
namespace sese {
 
class Compressor {
public:
    using OutputStream = sese::io::OutputStream;
 
    explicit Compressor(CompressionType type, size_t level, size_t buffer_size = ZLIB_CHUNK_SIZE);
 
    virtual ~Compressor();
 
    void input(const void *input, unsigned int input_size);
 
    int deflate(OutputStream *out);
 
    int reset();
 
    [[nodiscard]] size_t getTotalIn() const;
 
    [[nodiscard]] size_t getTotalOut() const;
 
private:
    void *stream;
    size_t cap = 0;
    size_t length = 0;
    size_t read = 0;
    unsigned char *buffer;
};
} // namespace sese