Clean project structure.

src/base/compression/ZlibEncoder.h

@@ -0,0 +1,59 @@
+#pragma once
+
+#include "AbstractEncoder.h"
+
+#include "DeflateElements.h"
+
+#include <memory>
+#include <vector>
+
+class AbstractChecksumCalculator;
+
+class ZlibEncoder : public AbstractEncoder
+{
+public:
+
+    enum class CompressionMethod : unsigned char
+    {
+        DEFLATE = 8,
+    };
+
+    enum class CompressionLevel : unsigned char
+    {
+        FASTEST,
+        FAST,
+        DEFAULT,
+        MAX_COMPRESSION
+    };
+
+    ZlibEncoder(BitStream* inputStream, BitStream* outputStream);
+    ~ZlibEncoder();
+
+    void setWindowSize(unsigned size);
+    void setDeflateCompressionMethod(Deflate::CompressionMethod method)
+    {
+        mDeflateCompressionMethod = method;
+    }
+
+    bool encode() override;
+    bool decode() override;
+
+    std::string getData() const;
+    std::string toString(CompressionLevel level) const;
+    std::string toString(CompressionMethod method) const;
+
+private:
+    void parseCompressionMethod(unsigned char method);
+    void parseExtraFlags(unsigned char extraFlags, unsigned char compression_byte);
+
+    CompressionMethod mCompressionMethod{CompressionMethod::DEFLATE};
+    Deflate::CompressionMethod mDeflateCompressionMethod{Deflate::CompressionMethod::NONE};
+    unsigned mWindowSize{32768}; // Window size, n in 2^(n+8) bytes
+
+    unsigned char mFlagCheck{0};
+    bool mUseDictionary{false};
+    CompressionLevel mFlagLevel{CompressionLevel::DEFAULT};
+
+    std::unique_ptr<AbstractChecksumCalculator> mChecksumCalculator;
+    std::unique_ptr<AbstractEncoder> mWorkingEncoder;
+};