--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/misc/libphysfs/lzma/CPP/7zip/UI/Common/OpenArchive.cpp	Mon Apr 10 12:06:43 2017 -0400
@@ -0,0 +1,461 @@
+// OpenArchive.cpp
+
+#include "StdAfx.h"
+
+#include "OpenArchive.h"
+
+#include "Common/Wildcard.h"
+
+#include "Windows/FileName.h"
+#include "Windows/FileDir.h"
+#include "Windows/Defs.h"
+#include "Windows/PropVariant.h"
+
+#include "../../Common/FileStreams.h"
+#include "../../Common/StreamUtils.h"
+
+#include "Common/StringConvert.h"
+
+#include "DefaultName.h"
+
+using namespace NWindows;
+
+HRESULT GetArchiveItemPath(IInArchive *archive, UInt32 index, UString &result)
+{
+  NCOM::CPropVariant prop;
+  RINOK(archive->GetProperty(index, kpidPath, &prop));
+  if(prop.vt == VT_BSTR)
+    result = prop.bstrVal;
+  else if (prop.vt == VT_EMPTY)
+    result.Empty();
+  else
+    return E_FAIL;
+  return S_OK;
+}
+
+HRESULT GetArchiveItemPath(IInArchive *archive, UInt32 index, const UString &defaultName, UString &result)
+{
+  RINOK(GetArchiveItemPath(archive, index, result));
+  if (result.IsEmpty())
+    result = defaultName;
+  return S_OK;
+}
+
+HRESULT GetArchiveItemFileTime(IInArchive *archive, UInt32 index, 
+    const FILETIME &defaultFileTime, FILETIME &fileTime)
+{
+  NCOM::CPropVariant prop;
+  RINOK(archive->GetProperty(index, kpidLastWriteTime, &prop));
+  if (prop.vt == VT_FILETIME)
+    fileTime = prop.filetime;
+  else if (prop.vt == VT_EMPTY)
+    fileTime = defaultFileTime;
+  else
+    return E_FAIL;
+  return S_OK;
+}
+
+HRESULT IsArchiveItemProp(IInArchive *archive, UInt32 index, PROPID propID, bool &result)
+{
+  NCOM::CPropVariant prop;
+  RINOK(archive->GetProperty(index, propID, &prop));
+  if(prop.vt == VT_BOOL)
+    result = VARIANT_BOOLToBool(prop.boolVal);
+  else if (prop.vt == VT_EMPTY)
+    result = false;
+  else
+    return E_FAIL;
+  return S_OK;
+}
+
+HRESULT IsArchiveItemFolder(IInArchive *archive, UInt32 index, bool &result)
+{
+  return IsArchiveItemProp(archive, index, kpidIsFolder, result);
+}
+
+HRESULT IsArchiveItemAnti(IInArchive *archive, UInt32 index, bool &result)
+{
+  return IsArchiveItemProp(archive, index, kpidIsAnti, result);
+}
+
+// Static-SFX (for Linux) can be big.
+const UInt64 kMaxCheckStartPosition = 1 << 22;
+
+HRESULT ReOpenArchive(IInArchive *archive, const UString &fileName, IArchiveOpenCallback *openArchiveCallback)
+{
+  CInFileStream *inStreamSpec = new CInFileStream;
+  CMyComPtr<IInStream> inStream(inStreamSpec);
+  inStreamSpec->Open(fileName);
+  return archive->Open(inStream, &kMaxCheckStartPosition, openArchiveCallback);
+}
+
+#ifndef _SFX
+static inline bool TestSignature(const Byte *p1, const Byte *p2, size_t size)
+{
+  for (size_t i = 0; i < size; i++)
+    if (p1[i] != p2[i])
+      return false;
+  return true;
+}
+#endif
+
+HRESULT OpenArchive(
+    CCodecs *codecs,
+    IInStream *inStream,
+    const UString &fileName, 
+    IInArchive **archiveResult, 
+    int &formatIndex,
+    UString &defaultItemName,
+    IArchiveOpenCallback *openArchiveCallback)
+{
+  *archiveResult = NULL;
+  UString extension;
+  {
+    int dotPos = fileName.ReverseFind(L'.');
+    if (dotPos >= 0)
+      extension = fileName.Mid(dotPos + 1);
+  }
+  CIntVector orderIndices;
+  int i;
+  int numFinded = 0;
+  for (i = 0; i < codecs->Formats.Size(); i++)
+    if (codecs->Formats[i].FindExtension(extension) >= 0)
+      orderIndices.Insert(numFinded++, i);
+    else
+      orderIndices.Add(i);
+  
+  #ifndef _SFX
+  if (numFinded != 1)
+  {
+    CIntVector orderIndices2;
+    CByteBuffer byteBuffer;
+    const UInt32 kBufferSize = (200 << 10);
+    byteBuffer.SetCapacity(kBufferSize);
+    Byte *buffer = byteBuffer;
+    RINOK(inStream->Seek(0, STREAM_SEEK_SET, NULL));
+    UInt32 processedSize;
+    RINOK(ReadStream(inStream, buffer, kBufferSize, &processedSize));
+    for (UInt32 pos = 0; pos < processedSize; pos++)
+    {
+      for (int i = 0; i < orderIndices.Size(); i++)
+      {
+        int index = orderIndices[i];
+        const CArcInfoEx &ai = codecs->Formats[index];
+        const CByteBuffer &sig = ai.StartSignature;
+        if (sig.GetCapacity() == 0)
+          continue;
+        if (pos + sig.GetCapacity() > processedSize)
+          continue;
+        if (TestSignature(buffer + pos, sig, sig.GetCapacity()))
+        {
+          orderIndices2.Add(index);
+          orderIndices.Delete(i--);
+        }
+      }
+    }
+    orderIndices2 += orderIndices;
+    orderIndices = orderIndices2;
+  }
+  else if (extension == L"000" || extension == L"001")
+  {
+    CByteBuffer byteBuffer;
+    const UInt32 kBufferSize = (1 << 10);
+    byteBuffer.SetCapacity(kBufferSize);
+    Byte *buffer = byteBuffer;
+    RINOK(inStream->Seek(0, STREAM_SEEK_SET, NULL));
+    UInt32 processedSize;
+    RINOK(ReadStream(inStream, buffer, kBufferSize, &processedSize));
+    if (processedSize >= 16)
+    {
+      Byte kRarHeader[] = {0x52 , 0x61, 0x72, 0x21, 0x1a, 0x07, 0x00};
+      if (TestSignature(buffer, kRarHeader, 7) && buffer[9] == 0x73 && (buffer[10] && 1) != 0)
+      {
+        for (int i = 0; i < orderIndices.Size(); i++)
+        {
+          int index = orderIndices[i];
+          const CArcInfoEx &ai = codecs->Formats[index];
+          if (ai.Name.CompareNoCase(L"rar") != 0)
+            continue;
+          orderIndices.Delete(i--);
+          orderIndices.Insert(0, index);
+          break;
+        }
+      }
+    }
+  }
+  #endif
+
+  HRESULT badResult = S_OK;
+  for(i = 0; i < orderIndices.Size(); i++)
+  {
+    inStream->Seek(0, STREAM_SEEK_SET, NULL);
+
+    CMyComPtr<IInArchive> archive;
+
+    formatIndex = orderIndices[i];
+    RINOK(codecs->CreateInArchive(formatIndex, archive));
+    if (!archive)
+      continue;
+
+    #ifdef EXTERNAL_CODECS
+    {
+      CMyComPtr<ISetCompressCodecsInfo> setCompressCodecsInfo;
+      archive.QueryInterface(IID_ISetCompressCodecsInfo, (void **)&setCompressCodecsInfo);
+      if (setCompressCodecsInfo)
+      {
+        RINOK(setCompressCodecsInfo->SetCompressCodecsInfo(codecs));
+      }
+    }
+    #endif
+
+    HRESULT result = archive->Open(inStream, &kMaxCheckStartPosition, openArchiveCallback);
+    if (result == S_FALSE)
+      continue;
+    if(result != S_OK)
+    {
+      badResult = result;
+      if(result == E_ABORT)
+        break;
+      continue;
+    }
+    *archiveResult = archive.Detach();
+    const CArcInfoEx &format = codecs->Formats[formatIndex];
+    if (format.Exts.Size() == 0)
+    {
+      defaultItemName = GetDefaultName2(fileName, L"", L"");
+    }
+    else
+    {
+      int subExtIndex = format.FindExtension(extension);
+      if (subExtIndex < 0)
+        subExtIndex = 0;
+      defaultItemName = GetDefaultName2(fileName, 
+          format.Exts[subExtIndex].Ext, 
+          format.Exts[subExtIndex].AddExt);
+    }
+    return S_OK;
+  }
+  if (badResult != S_OK)
+    return badResult;
+  return S_FALSE;
+}
+
+HRESULT OpenArchive(
+    CCodecs *codecs,
+    const UString &filePath, 
+    IInArchive **archiveResult, 
+    int &formatIndex,
+    UString &defaultItemName,
+    IArchiveOpenCallback *openArchiveCallback)
+{
+  CInFileStream *inStreamSpec = new CInFileStream;
+  CMyComPtr<IInStream> inStream(inStreamSpec);
+  if (!inStreamSpec->Open(filePath))
+    return GetLastError();
+  return OpenArchive(codecs, inStream, ExtractFileNameFromPath(filePath),
+    archiveResult, formatIndex,
+    defaultItemName, openArchiveCallback);
+}
+
+static void MakeDefaultName(UString &name)
+{
+  int dotPos = name.ReverseFind(L'.');
+  if (dotPos < 0)
+    return;
+  UString ext = name.Mid(dotPos + 1);
+  if (ext.IsEmpty())
+    return;
+  for (int pos = 0; pos < ext.Length(); pos++)
+    if (ext[pos] < L'0' || ext[pos] > L'9')
+      return;
+  name = name.Left(dotPos);
+}
+
+HRESULT OpenArchive(
+    CCodecs *codecs,
+    const UString &fileName, 
+    IInArchive **archive0, 
+    IInArchive **archive1, 
+    int &formatIndex0,
+    int &formatIndex1,
+    UString &defaultItemName0,
+    UString &defaultItemName1,
+    IArchiveOpenCallback *openArchiveCallback)
+{
+  HRESULT result = OpenArchive(codecs, fileName, 
+      archive0, formatIndex0, defaultItemName0, openArchiveCallback);
+  RINOK(result);
+  CMyComPtr<IInArchiveGetStream> getStream;
+  result = (*archive0)->QueryInterface(IID_IInArchiveGetStream, (void **)&getStream);
+  if (result != S_OK || getStream == 0)
+    return S_OK;
+
+  CMyComPtr<ISequentialInStream> subSeqStream;
+  result = getStream->GetStream(0, &subSeqStream);
+  if (result != S_OK)
+    return S_OK;
+
+  CMyComPtr<IInStream> subStream;
+  if (subSeqStream.QueryInterface(IID_IInStream, &subStream) != S_OK)
+    return S_OK;
+  if (!subStream)
+    return S_OK;
+
+  UInt32 numItems;
+  RINOK((*archive0)->GetNumberOfItems(&numItems));
+  if (numItems < 1)
+    return S_OK;
+
+  UString subPath;
+  RINOK(GetArchiveItemPath(*archive0, 0, subPath))
+  if (subPath.IsEmpty())
+  {
+    MakeDefaultName(defaultItemName0);
+    subPath = defaultItemName0;
+    const CArcInfoEx &format = codecs->Formats[formatIndex0];
+    if (format.Name.CompareNoCase(L"7z") == 0)
+    {
+      if (subPath.Right(3).CompareNoCase(L".7z") != 0)
+        subPath += L".7z";
+    }
+  }
+  else
+    subPath = ExtractFileNameFromPath(subPath);
+
+  CMyComPtr<IArchiveOpenSetSubArchiveName> setSubArchiveName;
+  openArchiveCallback->QueryInterface(IID_IArchiveOpenSetSubArchiveName, (void **)&setSubArchiveName);
+  if (setSubArchiveName)
+    setSubArchiveName->SetSubArchiveName(subPath);
+
+  result = OpenArchive(codecs, subStream, subPath,
+      archive1, formatIndex1, defaultItemName1, openArchiveCallback);
+  return S_OK;
+}
+
+static void SetCallback(const UString &archiveName,
+    IOpenCallbackUI *openCallbackUI, CMyComPtr<IArchiveOpenCallback> &openCallback)
+{
+  COpenCallbackImp *openCallbackSpec = new COpenCallbackImp;
+  openCallback = openCallbackSpec;
+  openCallbackSpec->Callback = openCallbackUI;
+
+  UString fullName;
+  int fileNamePartStartIndex;
+  NFile::NDirectory::MyGetFullPathName(archiveName, fullName, fileNamePartStartIndex);
+  openCallbackSpec->Init(
+      fullName.Left(fileNamePartStartIndex), 
+      fullName.Mid(fileNamePartStartIndex));
+}
+
+HRESULT MyOpenArchive(
+    CCodecs *codecs, 
+    const UString &archiveName,
+    IInArchive **archive, UString &defaultItemName, IOpenCallbackUI *openCallbackUI)
+{
+  CMyComPtr<IArchiveOpenCallback> openCallback;
+  SetCallback(archiveName, openCallbackUI, openCallback);
+  int formatInfo;
+  return OpenArchive(codecs, archiveName, archive, formatInfo, defaultItemName, openCallback);
+}
+
+HRESULT MyOpenArchive(
+    CCodecs *codecs,
+    const UString &archiveName,
+    IInArchive **archive0,
+    IInArchive **archive1,
+    UString &defaultItemName0,
+    UString &defaultItemName1,
+    UStringVector &volumePaths,
+    UInt64 &volumesSize,
+    IOpenCallbackUI *openCallbackUI)
+{
+  volumesSize = 0;
+  COpenCallbackImp *openCallbackSpec = new COpenCallbackImp;
+  CMyComPtr<IArchiveOpenCallback> openCallback = openCallbackSpec;
+  openCallbackSpec->Callback = openCallbackUI;
+
+  UString fullName;
+  int fileNamePartStartIndex;
+  NFile::NDirectory::MyGetFullPathName(archiveName, fullName, fileNamePartStartIndex);
+  UString prefix = fullName.Left(fileNamePartStartIndex);
+  UString name = fullName.Mid(fileNamePartStartIndex);
+  openCallbackSpec->Init(prefix, name);
+
+  int formatIndex0, formatIndex1;
+  RINOK(OpenArchive(codecs, archiveName,
+      archive0, 
+      archive1, 
+      formatIndex0, 
+      formatIndex1, 
+      defaultItemName0,
+      defaultItemName1,
+      openCallback));
+  volumePaths.Add(prefix + name);
+  for (int i = 0; i < openCallbackSpec->FileNames.Size(); i++)
+    volumePaths.Add(prefix + openCallbackSpec->FileNames[i]);
+  volumesSize = openCallbackSpec->TotalSize;
+  return S_OK;
+}
+
+HRESULT CArchiveLink::Close()
+{
+  if (Archive1 != 0)
+    RINOK(Archive1->Close());
+  if (Archive0 != 0)
+    RINOK(Archive0->Close());
+  IsOpen = false;
+  return S_OK;
+}
+
+void CArchiveLink::Release()
+{
+  IsOpen = false;
+  Archive1.Release();
+  Archive0.Release();
+}
+
+HRESULT OpenArchive(
+    CCodecs *codecs,
+    const UString &archiveName,
+    CArchiveLink &archiveLink,
+    IArchiveOpenCallback *openCallback)
+{
+  HRESULT res = OpenArchive(codecs, archiveName, 
+    &archiveLink.Archive0, &archiveLink.Archive1, 
+    archiveLink.FormatIndex0, archiveLink.FormatIndex1, 
+    archiveLink.DefaultItemName0, archiveLink.DefaultItemName1, 
+    openCallback);
+  archiveLink.IsOpen = (res == S_OK);
+  return res;
+}
+
+HRESULT MyOpenArchive(CCodecs *codecs,
+    const UString &archiveName, 
+    CArchiveLink &archiveLink,
+    IOpenCallbackUI *openCallbackUI)
+{
+  HRESULT res = MyOpenArchive(codecs, archiveName,
+    &archiveLink.Archive0, &archiveLink.Archive1, 
+    archiveLink.DefaultItemName0, archiveLink.DefaultItemName1, 
+    archiveLink.VolumePaths,
+    archiveLink.VolumesSize,
+    openCallbackUI);
+  archiveLink.IsOpen = (res == S_OK);
+  return res;
+}
+
+HRESULT ReOpenArchive(CCodecs *codecs, CArchiveLink &archiveLink, const UString &fileName)
+{
+  if (archiveLink.GetNumLevels() > 1)
+    return E_NOTIMPL;
+
+  if (archiveLink.GetNumLevels() == 0)
+    return MyOpenArchive(codecs, fileName, archiveLink, 0);
+
+  CMyComPtr<IArchiveOpenCallback> openCallback;
+  SetCallback(fileName, NULL, openCallback);
+
+  HRESULT res = ReOpenArchive(archiveLink.GetArchive(), fileName, openCallback);
+  archiveLink.IsOpen = (res == S_OK);
+  return res;
+}