4.20

2025-12-14 10:11:38 -06:00 · 2005-05-30 00:00:00 +00:00
parent 8c1b5c7b7e
commit 3c510ba80b
926 changed files with 40559 additions and 23519 deletions
--- a/7zip/Compress/BZip2Original/BZip2Encoder.cpp
+++ b/7zip/Compress/BZip2Original/BZip2Encoder.cpp
@@ -0,0 +1,120 @@
+// BZip2Encoder.cpp
+
+#include "StdAfx.h"
+
+#include "BZip2Encoder.h"
+
+#include "../../../Common/Alloc.h"
+#include "Original/bzlib.h"
+
+namespace NCompress {
+namespace NBZip2 {
+
+static const UInt32 kBufferSize = (1 << 20);
+
+CEncoder::~CEncoder()
+{
+  BigFree(m_InBuffer);
+}
+
+struct CBZip2Compressor: public bz_stream
+{
+  int Init(int blockSize100k, int verbosity, int small) 
+    { return BZ2_bzCompressInit(this, blockSize100k, verbosity, small); }
+  int Compress(int action )  { return BZ2_bzCompress(this, action ); }
+  int End()  { return BZ2_bzCompressEnd(this); }
+  UInt64 GetTotalIn() const { return (UInt64(total_in_hi32) << 32) +  total_in_lo32; }
+  UInt64 GetTotalOut() const { return (UInt64(total_out_hi32) << 32) +  total_out_lo32; }
+};
+
+class CBZip2CompressorReleaser
+{
+  CBZip2Compressor *m_Compressor;
+public:
+  CBZip2CompressorReleaser(CBZip2Compressor *compressor): m_Compressor(compressor) {}
+  void Disable() { m_Compressor = NULL; }
+  ~CBZip2CompressorReleaser()  { if (m_Compressor != NULL) m_Compressor->End(); }
+};
+
+
+STDMETHODIMP CEncoder::Code(ISequentialInStream *inStream,
+    ISequentialOutStream *outStream, const UInt64 *inSize, const UInt64 *outSize,
+    ICompressProgressInfo *progress)
+{
+  if (m_InBuffer == 0)
+  {
+    m_InBuffer = (Byte *)BigAlloc(kBufferSize * 2);
+    if (m_InBuffer == 0)
+      return E_OUTOFMEMORY;
+  }
+  Byte *outBuffer = m_InBuffer + kBufferSize;
+
+  CBZip2Compressor bzStream;
+  bzStream.bzalloc = NULL;
+  bzStream.bzfree = NULL;
+  bzStream.opaque = NULL;
+
+  int result = bzStream.Init(9, 0, 0);
+  switch(result)
+  {
+    case BZ_OK:
+      break;
+    case BZ_MEM_ERROR:
+      return E_OUTOFMEMORY;
+    default:
+      return E_FAIL;
+  }
+  CBZip2CompressorReleaser releaser(&bzStream);
+  bzStream.avail_in = 0;
+  while (true)
+  {
+    if (bzStream.avail_in == 0)
+    {
+      bzStream.next_in = (char *)m_InBuffer;
+      UInt32 processedSize;
+      RINOK(inStream->Read(m_InBuffer, kBufferSize, &processedSize));
+      bzStream.avail_in = processedSize;
+    }
+
+    bzStream.next_out = (char *)outBuffer;
+    bzStream.avail_out = kBufferSize;
+    bool askFinish = (bzStream.avail_in == 0);
+    result = bzStream.Compress(askFinish ? BZ_FINISH : BZ_RUN);
+    UInt32 numBytesToWrite = kBufferSize - bzStream.avail_out;
+    if (numBytesToWrite > 0)
+    {
+      UInt32 processedSize;
+      RINOK(outStream->Write(outBuffer, numBytesToWrite, &processedSize));
+      if (numBytesToWrite != processedSize)
+        return E_FAIL;
+    }
+
+    if (result == BZ_STREAM_END)
+      break;
+    switch(result)
+    {
+      case BZ_RUN_OK:
+        if (!askFinish)
+          break;
+        return E_FAIL;
+      case BZ_FINISH_OK:
+        if (askFinish)
+          break;
+        return E_FAIL;
+      case BZ_MEM_ERROR:
+        return E_OUTOFMEMORY;
+      default:
+        return E_FAIL;
+    }
+    if (progress != NULL)
+    {
+      UInt64 totalIn = bzStream.GetTotalIn();
+      UInt64 totalOut = bzStream.GetTotalOut();
+      RINOK(progress->SetRatioInfo(&totalIn, &totalOut));
+    }
+  }
+  // result = bzStream.End();
+  return S_OK;
+}
+
+}}