intermediate changes

ref:cde9a383711a11544ce7e107a78147fb96cc4029

1 files changed, 53 insertions, 0 deletions

diff --git a/library/cpp/streams/bzip2/bzip2.h b/library/cpp/streams/bzip2/bzip2.h
new file mode 100644
index 00000000000..2322277ef6f
--- /dev/null
+++ b/library/cpp/streams/bzip2/bzip2.h
@@ -0,0 +1,53 @@
+#pragma once
+
+#include <util/stream/input.h>
+#include <util/stream/output.h>
+#include <util/generic/ptr.h>
+#include <util/generic/yexception.h>
+
+#define BZIP_BUF_LEN (8 * 1024)
+#define BZIP_COMPRESSION_LEVEL 6
+
+/**
+ * @addtogroup Streams_Archs
+ * @{
+ */
+
+class TBZipException: public yexception {
+};
+
+class TBZipDecompressError: public TBZipException {
+};
+
+class TBZipCompressError: public TBZipException {
+};
+
+class TBZipDecompress: public IInputStream {
+public:
+    TBZipDecompress(IInputStream* input, size_t bufLen = BZIP_BUF_LEN);
+    ~TBZipDecompress() override;
+
+private:
+    size_t DoRead(void* buf, size_t size) override;
+
+private:
+    class TImpl;
+    THolder<TImpl> Impl_;
+};
+
+class TBZipCompress: public IOutputStream {
+public:
+    TBZipCompress(IOutputStream* out, size_t compressionLevel = BZIP_COMPRESSION_LEVEL, size_t bufLen = BZIP_BUF_LEN);
+    ~TBZipCompress() override;
+
+private:
+    void DoWrite(const void* buf, size_t size) override;
+    void DoFlush() override;
+    void DoFinish() override;
+
+public:
+    class TImpl;
+    THolder<TImpl> Impl_;
+};
+
+/** @} */