Add m-esr52 at 52.6.0

1 files changed, 245 insertions, 0 deletions

diff --git a/other-licenses/7zstub/src/Windows/FileIO.cpp b/other-licenses/7zstub/src/Windows/FileIO.cpp
new file mode 100644
index 000000000..20b5fc159
--- /dev/null
+++ b/other-licenses/7zstub/src/Windows/FileIO.cpp
@@ -0,0 +1,245 @@
+// Windows/FileIO.cpp

+

+#include "StdAfx.h"

+

+#include "FileIO.h"

+#include "Defs.h"

+#ifndef _UNICODE

+#include "../Common/StringConvert.h"

+#endif

+

+#ifndef _UNICODE

+extern bool g_IsNT;

+#endif

+

+namespace NWindows {

+namespace NFile {

+namespace NIO {

+

+CFileBase::~CFileBase() { Close(); }

+

+bool CFileBase::Create(LPCTSTR fileName, DWORD desiredAccess,

+    DWORD shareMode, DWORD creationDisposition, DWORD flagsAndAttributes)

+{

+  Close();

+  _handle = ::CreateFile(fileName, desiredAccess, shareMode, 

+      (LPSECURITY_ATTRIBUTES)NULL, creationDisposition, 

+      flagsAndAttributes, (HANDLE) NULL);

+  return (_fileIsOpen = (_handle != INVALID_HANDLE_VALUE));

+}

+

+#ifndef _UNICODE

+bool CFileBase::Create(LPCWSTR fileName, DWORD desiredAccess,

+    DWORD shareMode, DWORD creationDisposition, DWORD flagsAndAttributes)

+{

+  if (g_IsNT)

+  {

+    Close();

+    _handle = ::CreateFileW(fileName, desiredAccess, shareMode, 

+      (LPSECURITY_ATTRIBUTES)NULL, creationDisposition, 

+      flagsAndAttributes, (HANDLE) NULL);

+    return (_fileIsOpen = (_handle != INVALID_HANDLE_VALUE));

+  }

+  return Create(UnicodeStringToMultiByte(fileName, ::AreFileApisANSI() ? CP_ACP : CP_OEMCP), 

+    desiredAccess, shareMode, creationDisposition, flagsAndAttributes);

+}

+#endif

+

+bool CFileBase::Close()

+{

+  if(!_fileIsOpen)

+    return true;

+  bool result = BOOLToBool(::CloseHandle(_handle));

+  _fileIsOpen = !result;

+  return result;

+}

+

+bool CFileBase::GetPosition(UInt64 &position) const

+{

+  return Seek(0, FILE_CURRENT, position);

+}

+

+bool CFileBase::GetLength(UInt64 &length) const

+{

+  DWORD sizeHigh;

+  DWORD sizeLow = ::GetFileSize(_handle, &sizeHigh);

+  if(sizeLow == 0xFFFFFFFF)

+    if(::GetLastError() != NO_ERROR)

+      return false;

+  length = (((UInt64)sizeHigh) << 32) + sizeLow;

+  return true;

+}

+

+bool CFileBase::Seek(Int64 distanceToMove, DWORD moveMethod, UInt64 &newPosition) const

+{

+  LARGE_INTEGER value;

+  value.QuadPart = distanceToMove;

+  value.LowPart = ::SetFilePointer(_handle, value.LowPart, &value.HighPart, moveMethod);

+  if (value.LowPart == 0xFFFFFFFF)

+    if(::GetLastError() != NO_ERROR) 

+      return false;

+  newPosition = value.QuadPart;

+  return true;

+}

+

+bool CFileBase::Seek(UInt64 position, UInt64 &newPosition)

+{

+  return Seek(position, FILE_BEGIN, newPosition);

+}

+

+bool CFileBase::SeekToBegin()

+{

+  UInt64 newPosition;

+  return Seek(0, newPosition);

+}

+

+bool CFileBase::SeekToEnd(UInt64 &newPosition)

+{

+  return Seek(0, FILE_END, newPosition);

+}

+

+bool CFileBase::GetFileInformation(CByHandleFileInfo &fileInfo) const

+{

+  BY_HANDLE_FILE_INFORMATION winFileInfo;

+  if(!::GetFileInformationByHandle(_handle, &winFileInfo))

+    return false;

+  fileInfo.Attributes = winFileInfo.dwFileAttributes;

+  fileInfo.CreationTime = winFileInfo.ftCreationTime;

+  fileInfo.LastAccessTime = winFileInfo.ftLastAccessTime;

+  fileInfo.LastWriteTime = winFileInfo.ftLastWriteTime;

+  fileInfo.VolumeSerialNumber = winFileInfo.dwFileAttributes; 

+  fileInfo.Size = (((UInt64)winFileInfo.nFileSizeHigh) << 32) +  winFileInfo.nFileSizeLow;

+  fileInfo.NumberOfLinks = winFileInfo.nNumberOfLinks;

+  fileInfo.FileIndex = (((UInt64)winFileInfo.nFileIndexHigh) << 32) + winFileInfo.nFileIndexLow;

+  return true;

+}

+

+/////////////////////////

+// CInFile

+

+bool CInFile::Open(LPCTSTR fileName, DWORD shareMode, DWORD creationDisposition, DWORD flagsAndAttributes)

+  { return Create(fileName, GENERIC_READ, shareMode, creationDisposition, flagsAndAttributes); }

+

+bool CInFile::Open(LPCTSTR fileName)

+  { return Open(fileName, FILE_SHARE_READ, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL); }

+

+#ifndef _UNICODE

+bool CInFile::Open(LPCWSTR fileName, DWORD shareMode, DWORD creationDisposition, DWORD flagsAndAttributes)

+  { return Create(fileName, GENERIC_READ, shareMode, creationDisposition, flagsAndAttributes); }

+

+bool CInFile::Open(LPCWSTR fileName)

+  { return Open(fileName, FILE_SHARE_READ, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL); }

+#endif

+

+// ReadFile and WriteFile functions in Windows have BUG:

+// If you Read or Write 64MB or more (probably min_failure_size = 64MB - 32KB + 1) 

+// from/to Network file, it returns ERROR_NO_SYSTEM_RESOURCES 

+// (Insufficient system resources exist to complete the requested service).

+

+static UInt32 kChunkSizeMax = (1 << 24);

+

+bool CInFile::ReadPart(void *data, UInt32 size, UInt32 &processedSize)

+{

+  if (size > kChunkSizeMax)

+    size = kChunkSizeMax;

+  DWORD processedLoc = 0;

+  bool res = BOOLToBool(::ReadFile(_handle, data, size, &processedLoc, NULL));

+  processedSize = (UInt32)processedLoc;

+  return res;

+}

+

+bool CInFile::Read(void *data, UInt32 size, UInt32 &processedSize)

+{

+  processedSize = 0;

+  do

+  {

+    UInt32 processedLoc = 0;

+    bool res = ReadPart(data, size, processedLoc);

+    processedSize += processedLoc;

+    if (!res)

+      return false;

+    if (processedLoc == 0)

+      return true;

+    data = (void *)((unsigned char *)data + processedLoc);

+    size -= processedLoc;

+  }

+  while (size > 0);

+  return true;

+}

+

+/////////////////////////

+// COutFile

+

+bool COutFile::Open(LPCTSTR fileName, DWORD shareMode, DWORD creationDisposition, DWORD flagsAndAttributes)

+  { return CFileBase::Create(fileName, GENERIC_WRITE, shareMode, creationDisposition, flagsAndAttributes); }

+

+static inline DWORD GetCreationDisposition(bool createAlways)

+  { return createAlways? CREATE_ALWAYS: CREATE_NEW; }

+

+bool COutFile::Open(LPCTSTR fileName, DWORD creationDisposition)

+  { return Open(fileName, FILE_SHARE_READ, creationDisposition, FILE_ATTRIBUTE_NORMAL); }

+

+bool COutFile::Create(LPCTSTR fileName, bool createAlways)

+  { return Open(fileName, GetCreationDisposition(createAlways)); }

+

+#ifndef _UNICODE

+

+bool COutFile::Open(LPCWSTR fileName, DWORD shareMode, DWORD creationDisposition, DWORD flagsAndAttributes)

+  { return CFileBase::Create(fileName, GENERIC_WRITE, shareMode,      creationDisposition, flagsAndAttributes); }

+

+bool COutFile::Open(LPCWSTR fileName, DWORD creationDisposition)

+  { return Open(fileName, FILE_SHARE_READ,  creationDisposition, FILE_ATTRIBUTE_NORMAL); }

+

+bool COutFile::Create(LPCWSTR fileName, bool createAlways)

+  { return Open(fileName, GetCreationDisposition(createAlways)); }

+

+#endif

+

+bool COutFile::SetTime(const FILETIME *creationTime, const FILETIME *lastAccessTime, const FILETIME *lastWriteTime)

+  { return BOOLToBool(::SetFileTime(_handle, creationTime, lastAccessTime, lastWriteTime)); }

+

+bool COutFile::SetLastWriteTime(const FILETIME *lastWriteTime)

+  {  return SetTime(NULL, NULL, lastWriteTime); }

+

+bool COutFile::WritePart(const void *data, UInt32 size, UInt32 &processedSize)

+{

+  if (size > kChunkSizeMax)

+    size = kChunkSizeMax;

+  DWORD processedLoc = 0;

+  bool res = BOOLToBool(::WriteFile(_handle, data, size, &processedLoc, NULL));

+  processedSize = (UInt32)processedLoc;

+  return res;

+}

+

+bool COutFile::Write(const void *data, UInt32 size, UInt32 &processedSize)

+{

+  processedSize = 0;

+  do

+  {

+    UInt32 processedLoc = 0;

+    bool res = WritePart(data, size, processedLoc);

+    processedSize += processedLoc;

+    if (!res)

+      return false;

+    if (processedLoc == 0)

+      return true;

+    data = (const void *)((const unsigned char *)data + processedLoc);

+    size -= processedLoc;

+  }

+  while (size > 0);

+  return true;

+}

+

+bool COutFile::SetEndOfFile() { return BOOLToBool(::SetEndOfFile(_handle)); }

+

+bool COutFile::SetLength(UInt64 length)

+{

+  UInt64 newPosition;

+  if(!Seek(length, newPosition))

+    return false;

+  if(newPosition != length)

+    return false;

+  return SetEndOfFile();

+}

+

+}}}