1 files changed, 250 insertions, 0 deletions
diff --git a/other-licenses/7zstub/src/CPP/7zip/Common/CWrappers.cpp b/other-licenses/7zstub/src/CPP/7zip/Common/CWrappers.cpp
new file mode 100644
index 000000000..e726dadc2
--- /dev/null
+++ b/other-licenses/7zstub/src/CPP/7zip/Common/CWrappers.cpp
@@ -0,0 +1,250 @@
+// CWrappers.h
+
+#include "StdAfx.h"
+
+#include "../../../C/Alloc.h"
+
+#include "CWrappers.h"
+
+#include "StreamUtils.h"
+
+SRes HRESULT_To_SRes(HRESULT res, SRes defaultRes) throw()
+{
+  switch (res)
+  {
+    case S_OK: return SZ_OK;
+    case E_OUTOFMEMORY: return SZ_ERROR_MEM;
+    case E_INVALIDARG: return SZ_ERROR_PARAM;
+    case E_ABORT: return SZ_ERROR_PROGRESS;
+    case S_FALSE: return SZ_ERROR_DATA;
+    case E_NOTIMPL: return SZ_ERROR_UNSUPPORTED;
+  }
+  return defaultRes;
+}
+
+
+HRESULT SResToHRESULT(SRes res) throw()
+{
+  switch (res)
+  {
+    case SZ_OK: return S_OK;
+    
+    case SZ_ERROR_DATA:
+    case SZ_ERROR_CRC:
+    case SZ_ERROR_INPUT_EOF:
+      return S_FALSE;
+    
+    case SZ_ERROR_MEM: return E_OUTOFMEMORY;
+    case SZ_ERROR_PARAM: return E_INVALIDARG;
+    case SZ_ERROR_PROGRESS: return E_ABORT;
+    case SZ_ERROR_UNSUPPORTED: return E_NOTIMPL;
+    // case SZ_ERROR_OUTPUT_EOF:
+    // case SZ_ERROR_READ:
+    // case SZ_ERROR_WRITE:
+    // case SZ_ERROR_THREAD:
+    // case SZ_ERROR_ARCHIVE:
+    // case SZ_ERROR_NO_ARCHIVE:
+    // return E_FAIL;
+  }
+  if (res < 0)
+    return res;
+  return E_FAIL;
+}
+
+
+#define PROGRESS_UNKNOWN_VALUE ((UInt64)(Int64)-1)
+
+#define CONVERT_PR_VAL(x) (x == PROGRESS_UNKNOWN_VALUE ? NULL : &x)
+
+
+static SRes CompressProgress(const ICompressProgress *pp, UInt64 inSize, UInt64 outSize) throw()
+{
+  CCompressProgressWrap *p = CONTAINER_FROM_VTBL(pp, CCompressProgressWrap, vt);
+  p->Res = p->Progress->SetRatioInfo(CONVERT_PR_VAL(inSize), CONVERT_PR_VAL(outSize));
+  return HRESULT_To_SRes(p->Res, SZ_ERROR_PROGRESS);
+}
+
+void CCompressProgressWrap::Init(ICompressProgressInfo *progress) throw()
+{
+  vt.Progress = CompressProgress;
+  Progress = progress;
+  Res = SZ_OK;
+}
+
+static const UInt32 kStreamStepSize = (UInt32)1 << 31;
+
+static SRes MyRead(const ISeqInStream *pp, void *data, size_t *size) throw()
+{
+  CSeqInStreamWrap *p = CONTAINER_FROM_VTBL(pp, CSeqInStreamWrap, vt);
+  UInt32 curSize = ((*size < kStreamStepSize) ? (UInt32)*size : kStreamStepSize);
+  p->Res = (p->Stream->Read(data, curSize, &curSize));
+  *size = curSize;
+  p->Processed += curSize;
+  if (p->Res == S_OK)
+    return SZ_OK;
+  return HRESULT_To_SRes(p->Res, SZ_ERROR_READ);
+}
+
+static size_t MyWrite(const ISeqOutStream *pp, const void *data, size_t size) throw()
+{
+  CSeqOutStreamWrap *p = CONTAINER_FROM_VTBL(pp, CSeqOutStreamWrap, vt);
+  if (p->Stream)
+  {
+    p->Res = WriteStream(p->Stream, data, size);
+    if (p->Res != 0)
+      return 0;
+  }
+  else
+    p->Res = S_OK;
+  p->Processed += size;
+  return size;
+}
+
+
+void CSeqInStreamWrap::Init(ISequentialInStream *stream) throw()
+{
+  vt.Read = MyRead;
+  Stream = stream;
+  Processed = 0;
+  Res = S_OK;
+}
+
+void CSeqOutStreamWrap::Init(ISequentialOutStream *stream) throw()
+{
+  vt.Write = MyWrite;
+  Stream = stream;
+  Res = SZ_OK;
+  Processed = 0;
+}
+
+
+static SRes InStreamWrap_Read(const ISeekInStream *pp, void *data, size_t *size) throw()
+{
+  CSeekInStreamWrap *p = CONTAINER_FROM_VTBL(pp, CSeekInStreamWrap, vt);
+  UInt32 curSize = ((*size < kStreamStepSize) ? (UInt32)*size : kStreamStepSize);
+  p->Res = p->Stream->Read(data, curSize, &curSize);
+  *size = curSize;
+  return (p->Res == S_OK) ? SZ_OK : SZ_ERROR_READ;
+}
+
+static SRes InStreamWrap_Seek(const ISeekInStream *pp, Int64 *offset, ESzSeek origin) throw()
+{
+  CSeekInStreamWrap *p = CONTAINER_FROM_VTBL(pp, CSeekInStreamWrap, vt);
+  UInt32 moveMethod;
+  switch (origin)
+  {
+    case SZ_SEEK_SET: moveMethod = STREAM_SEEK_SET; break;
+    case SZ_SEEK_CUR: moveMethod = STREAM_SEEK_CUR; break;
+    case SZ_SEEK_END: moveMethod = STREAM_SEEK_END; break;
+    default: return SZ_ERROR_PARAM;
+  }
+  UInt64 newPosition;
+  p->Res = p->Stream->Seek(*offset, moveMethod, &newPosition);
+  *offset = (Int64)newPosition;
+  return (p->Res == S_OK) ? SZ_OK : SZ_ERROR_READ;
+}
+
+void CSeekInStreamWrap::Init(IInStream *stream) throw()
+{
+  Stream = stream;
+  vt.Read = InStreamWrap_Read;
+  vt.Seek = InStreamWrap_Seek;
+  Res = S_OK;
+}
+
+
+/* ---------- CByteInBufWrap ---------- */
+
+void CByteInBufWrap::Free() throw()
+{
+  ::MidFree(Buf);
+  Buf = 0;
+}
+
+bool CByteInBufWrap::Alloc(UInt32 size) throw()
+{
+  if (Buf == 0 || size != Size)
+  {
+    Free();
+    Lim = Cur = Buf = (Byte *)::MidAlloc((size_t)size);
+    Size = size;
+  }
+  return (Buf != 0);
+}
+
+Byte CByteInBufWrap::ReadByteFromNewBlock() throw()
+{
+  if (Res == S_OK)
+  {
+    UInt32 avail;
+    Processed += (Cur - Buf);
+    Res = Stream->Read(Buf, Size, &avail);
+    Cur = Buf;
+    Lim = Buf + avail;
+    if (avail != 0)
+      return *Cur++;
+  }
+  Extra = true;
+  return 0;
+}
+
+static Byte Wrap_ReadByte(const IByteIn *pp) throw()
+{
+  CByteInBufWrap *p = CONTAINER_FROM_VTBL_CLS(pp, CByteInBufWrap, vt);
+  if (p->Cur != p->Lim)
+    return *p->Cur++;
+  return p->ReadByteFromNewBlock();
+}
+
+CByteInBufWrap::CByteInBufWrap(): Buf(0)
+{
+  vt.Read = Wrap_ReadByte;
+}
+
+
+/* ---------- CByteOutBufWrap ---------- */
+
+void CByteOutBufWrap::Free() throw()
+{
+  ::MidFree(Buf);
+  Buf = 0;
+}
+
+bool CByteOutBufWrap::Alloc(size_t size) throw()
+{
+  if (Buf == 0 || size != Size)
+  {
+    Free();
+    Buf = (Byte *)::MidAlloc(size);
+    Size = size;
+  }
+  return (Buf != 0);
+}
+
+HRESULT CByteOutBufWrap::Flush() throw()
+{
+  if (Res == S_OK)
+  {
+    size_t size = (Cur - Buf);
+    Res = WriteStream(Stream, Buf, size);
+    if (Res == S_OK)
+      Processed += size;
+    Cur = Buf;
+  }
+  return Res;
+}
+
+static void Wrap_WriteByte(const IByteOut *pp, Byte b) throw()
+{
+  CByteOutBufWrap *p = CONTAINER_FROM_VTBL_CLS(pp, CByteOutBufWrap, vt);
+  Byte *dest = p->Cur;
+  *dest = b;
+  p->Cur = ++dest;
+  if (dest == p->Lim)
+    p->Flush();
+}
+
+CByteOutBufWrap::CByteOutBufWrap() throw(): Buf(0)
+{
+  vt.Write = Wrap_WriteByte;
+}