intermediate changes

ref:cde9a383711a11544ce7e107a78147fb96cc4029

1 files changed, 37 insertions, 0 deletions

diff --git a/library/cpp/streams/lzma/lzma.h b/library/cpp/streams/lzma/lzma.h
new file mode 100644
index 0000000000..ca1e06e9ef
--- /dev/null
+++ b/library/cpp/streams/lzma/lzma.h
@@ -0,0 +1,37 @@
+#pragma once
+
+#include <util/stream/input.h>
+#include <util/stream/output.h>
+#include <util/stream/zerocopy.h>
+
+#include <util/generic/ptr.h>
+
+class TLzmaCompress: public IOutputStream {
+public:
+    TLzmaCompress(IOutputStream* slave, size_t level = 7);
+    ~TLzmaCompress() override;
+
+private:
+    void DoWrite(const void* buf, size_t len) override;
+    void DoFinish() override;
+
+private:
+    class TImpl;
+    THolder<TImpl> Impl_;
+};
+
+class TLzmaDecompress: public IInputStream {
+public:
+    TLzmaDecompress(IInputStream* slave);
+    TLzmaDecompress(IZeroCopyInput* input);
+    ~TLzmaDecompress() override;
+
+private:
+    size_t DoRead(void* buf, size_t len) override;
+
+private:
+    class TImpl;
+    class TImplStream;
+    class TImplZeroCopy;
+    THolder<TImpl> Impl_;
+};