1 files changed, 57 insertions, 0 deletions
diff --git a/src/libs/7zip/unix/CPP/7zip/Compress/BitlEncoder.h b/src/libs/7zip/unix/CPP/7zip/Compress/BitlEncoder.h
new file mode 100644
index 000000000..7de575456
--- /dev/null
+++ b/src/libs/7zip/unix/CPP/7zip/Compress/BitlEncoder.h
@@ -0,0 +1,57 @@
+// BitlEncoder.h -- the Least Significant Bit of byte is First
+
+#ifndef __BITL_ENCODER_H
+#define __BITL_ENCODER_H
+
+#include "../Common/OutBuffer.h"
+
+class CBitlEncoder
+{
+  COutBuffer m_Stream;
+  unsigned m_BitPos;
+  Byte m_CurByte;
+public:
+  bool Create(UInt32 bufferSize) { return m_Stream.Create(bufferSize); }
+  void SetStream(ISequentialOutStream *outStream) { m_Stream.SetStream(outStream); }
+  void ReleaseStream() { m_Stream.ReleaseStream(); }
+  UInt32 GetBitPosition() const { return (8 - m_BitPos); }
+  UInt64 GetProcessedSize() const { return m_Stream.GetProcessedSize() + (8 - m_BitPos + 7) /8; }
+  void Init()
+  {
+    m_Stream.Init();
+    m_BitPos = 8;
+    m_CurByte = 0;
+  }
+  HRESULT Flush()
+  {
+    FlushByte();
+    return m_Stream.Flush();
+  }
+  void FlushByte()
+  {
+    if (m_BitPos < 8)
+      m_Stream.WriteByte(m_CurByte);
+    m_BitPos = 8;
+    m_CurByte = 0;
+  }
+  void WriteBits(UInt32 value, unsigned numBits)
+  {
+    while (numBits > 0)
+    {
+      if (numBits < m_BitPos)
+      {
+        m_CurByte |= (value & ((1 << numBits) - 1)) << (8 - m_BitPos);
+        m_BitPos -= numBits;
+        return;
+      }
+      numBits -= m_BitPos;
+      m_Stream.WriteByte((Byte)(m_CurByte | (value << (8 - m_BitPos))));
+      value >>= m_BitPos;
+      m_BitPos = 8;
+      m_CurByte = 0;
+    }
+  }
+  void WriteByte(Byte b) { m_Stream.WriteByte(b);}
+};
+
+#endif