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-rwxr-xr-xCPP/7zip/Common/CWrappers.cpp226
1 files changed, 226 insertions, 0 deletions
diff --git a/CPP/7zip/Common/CWrappers.cpp b/CPP/7zip/Common/CWrappers.cpp
new file mode 100755
index 0000000..66b8449
--- /dev/null
+++ b/CPP/7zip/Common/CWrappers.cpp
@@ -0,0 +1,226 @@
+// CWrappers.h
+
+#include "StdAfx.h"
+
+#include "../../../C/Alloc.h"
+
+#include "CWrappers.h"
+
+#include "StreamUtils.h"
+
+#define PROGRESS_UNKNOWN_VALUE ((UInt64)(Int64)-1)
+
+#define CONVERT_PR_VAL(x) (x == PROGRESS_UNKNOWN_VALUE ? NULL : &x)
+
+static SRes CompressProgress(void *pp, UInt64 inSize, UInt64 outSize)
+{
+ CCompressProgressWrap *p = (CCompressProgressWrap *)pp;
+ p->Res = p->Progress->SetRatioInfo(CONVERT_PR_VAL(inSize), CONVERT_PR_VAL(outSize));
+ return (SRes)p->Res;
+}
+
+CCompressProgressWrap::CCompressProgressWrap(ICompressProgressInfo *progress)
+{
+ p.Progress = CompressProgress;
+ Progress = progress;
+ Res = SZ_OK;
+}
+
+static const UInt32 kStreamStepSize = (UInt32)1 << 31;
+
+SRes HRESULT_To_SRes(HRESULT res, SRes defaultRes)
+{
+ 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;
+ }
+ return defaultRes;
+}
+
+static SRes MyRead(void *object, void *data, size_t *size)
+{
+ CSeqInStreamWrap *p = (CSeqInStreamWrap *)object;
+ UInt32 curSize = ((*size < kStreamStepSize) ? (UInt32)*size : kStreamStepSize);
+ p->Res = (p->Stream->Read(data, curSize, &curSize));
+ *size = curSize;
+ if (p->Res == S_OK)
+ return SZ_OK;
+ return HRESULT_To_SRes(p->Res, SZ_ERROR_READ);
+}
+
+static size_t MyWrite(void *object, const void *data, size_t size)
+{
+ CSeqOutStreamWrap *p = (CSeqOutStreamWrap *)object;
+ 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;
+}
+
+CSeqInStreamWrap::CSeqInStreamWrap(ISequentialInStream *stream)
+{
+ p.Read = MyRead;
+ Stream = stream;
+}
+
+CSeqOutStreamWrap::CSeqOutStreamWrap(ISequentialOutStream *stream)
+{
+ p.Write = MyWrite;
+ Stream = stream;
+ Res = SZ_OK;
+ Processed = 0;
+}
+
+HRESULT SResToHRESULT(SRes res)
+{
+ switch(res)
+ {
+ case SZ_OK: return S_OK;
+ case SZ_ERROR_MEM: return E_OUTOFMEMORY;
+ case SZ_ERROR_PARAM: return E_INVALIDARG;
+ case SZ_ERROR_PROGRESS: return E_ABORT;
+ case SZ_ERROR_DATA: return S_FALSE;
+ }
+ return E_FAIL;
+}
+
+static SRes InStreamWrap_Read(void *pp, void *data, size_t *size)
+{
+ CSeekInStreamWrap *p = (CSeekInStreamWrap *)pp;
+ 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(void *pp, Int64 *offset, ESzSeek origin)
+{
+ CSeekInStreamWrap *p = (CSeekInStreamWrap *)pp;
+ 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;
+}
+
+CSeekInStreamWrap::CSeekInStreamWrap(IInStream *stream)
+{
+ Stream = stream;
+ p.Read = InStreamWrap_Read;
+ p.Seek = InStreamWrap_Seek;
+ Res = S_OK;
+}
+
+
+/* ---------- CByteInBufWrap ---------- */
+
+void CByteInBufWrap::Free()
+{
+ ::MidFree(Buf);
+ Buf = 0;
+}
+
+bool CByteInBufWrap::Alloc(UInt32 size)
+{
+ if (Buf == 0 || size != Size)
+ {
+ Free();
+ Lim = Cur = Buf = (Byte *)::MidAlloc((size_t)size);
+ Size = size;
+ }
+ return (Buf != 0);
+}
+
+Byte CByteInBufWrap::ReadByteFromNewBlock()
+{
+ 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(void *pp)
+{
+ CByteInBufWrap *p = (CByteInBufWrap *)pp;
+ if (p->Cur != p->Lim)
+ return *p->Cur++;
+ return p->ReadByteFromNewBlock();
+}
+
+CByteInBufWrap::CByteInBufWrap(): Buf(0)
+{
+ p.Read = Wrap_ReadByte;
+}
+
+
+/* ---------- CByteOutBufWrap ---------- */
+
+void CByteOutBufWrap::Free()
+{
+ ::MidFree(Buf);
+ Buf = 0;
+}
+
+bool CByteOutBufWrap::Alloc(size_t size)
+{
+ if (Buf == 0 || size != Size)
+ {
+ Free();
+ Buf = (Byte *)::MidAlloc(size);
+ Size = size;
+ }
+ return (Buf != 0);
+}
+
+HRESULT CByteOutBufWrap::Flush()
+{
+ 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(void *pp, Byte b)
+{
+ CByteOutBufWrap *p = (CByteOutBufWrap *)pp;
+ Byte *dest = p->Cur;
+ *dest = b;
+ p->Cur = ++dest;
+ if (dest == p->Lim)
+ p->Flush();
+}
+
+CByteOutBufWrap::CByteOutBufWrap(): Buf(0)
+{
+ p.Write = Wrap_WriteByte;
+}