3.13

7zip/Archive/Zip/ZipIn.h

@@ -0,0 +1,84 @@
+// Archive/ZipIn.h
+
+#pragma once
+
+#ifndef __ZIP_IN_H
+#define __ZIP_IN_H
+
+#include "Common/MyCom.h"
+#include "../../IStream.h"
+
+#include "ZipHeader.h"
+#include "ZipItemEx.h"
+
+namespace NArchive {
+namespace NZip {
+  
+class CInArchiveException
+{
+public:
+  enum CCauseType
+  {
+    kUnexpectedEndOfArchive = 0,
+    kArchiceHeaderCRCError,
+    kFileHeaderCRCError,
+    kIncorrectArchive,
+    kDataDescroptorsAreNotSupported,
+    kMultiVolumeArchiveAreNotSupported,
+    kReadStreamError,
+    kSeekStreamError
+  } 
+  Cause;
+  CInArchiveException(CCauseType cause): Cause(cause) {}
+};
+
+class CInArchiveInfo
+{
+public:
+  UINT64 StartPosition;
+  UINT64 CommentPosition;
+  UINT16 CommentSize;
+  bool IsCommented() const { return (CommentSize != 0); };
+};
+
+class CProgressVirt
+{
+public:
+  STDMETHOD(SetCompleted)(const UINT64 *numFiles) PURE;
+};
+
+class CInArchive
+{
+  CMyComPtr<IInStream> m_Stream;
+  UINT32 m_Signature;
+  UINT64 m_StreamStartPosition;
+  UINT64 m_Position;
+  CInArchiveInfo m_ArchiveInfo;
+  AString m_NameBuffer;
+  
+  bool FindAndReadMarker(const UINT64 *searchHeaderSizeLimit);
+  bool ReadSignature(UINT32 &signature);
+  AString ReadFileName(UINT32 nameSize);
+  
+  HRESULT ReadBytes(void *data, UINT32 size, UINT32 *processedSize);
+  bool ReadBytesAndTestSize(void *data, UINT32 size);
+  void SafeReadBytes(void *data, UINT32 size);
+  
+  void IncreasePositionValue(UINT64 addValue);
+  void IncreaseRealPosition(UINT64 addValue);
+  void ThrowIncorrectArchiveException();
+ 
+public:
+  HRESULT ReadHeaders(CObjectVector<CItemEx> &items, CProgressVirt *progress);
+  bool Open(IInStream *inStream, const UINT64 *searchHeaderSizeLimit);
+  void Close();
+  void GetArchiveInfo(CInArchiveInfo &archiveInfo) const;
+  void DirectGetBytes(void *data, UINT32 num);
+  bool SeekInArchive(UINT64 position);
+  ISequentialInStream *CreateLimitedStream(UINT64 position, UINT64 size);
+  IInStream* CreateStream();
+};
+  
+}}
+  
+#endif