Keep only base/extractor.[cc|h].

third_party/lzma/v4_65/files/CPP/Windows/FileIO.cpp

-// Windows/FileIO.cpp
-
-#include "StdAfx.h"
-
-#include "FileIO.h"
-#include "Defs.h"
-#ifdef WIN_LONG_PATH
-#include "../Common/MyString.h"
-#endif
-#ifndef _UNICODE
-#include "../Common/StringConvert.h"
-#endif
-
-#ifndef _UNICODE
-extern bool g_IsNT;
-#endif
-
-namespace NWindows {
-namespace NFile {
-
-#if defined(WIN_LONG_PATH) && defined(_UNICODE)
-#define WIN_LONG_PATH2
-#endif
-
-#ifdef WIN_LONG_PATH
-bool GetLongPathBase(LPCWSTR s, UString &res)
-{
-  res.Empty();
-  int len = MyStringLen(s);
-  wchar_t c = s[0];
-  if (len < 1 || c == L'\\' || c == L'.' && (len == 1 || len == 2 && s[1] == L'.'))
-    return true;
-  UString curDir;
-  bool isAbs = false;
-  if (len > 3)
-    isAbs = (s[1] == L':' && s[2] == L'\\' && (c >= L'a' && c <= L'z' || c >= L'A' && c <= L'Z'));
-
-  if (!isAbs)
-    {
-      DWORD needLength = ::GetCurrentDirectoryW(MAX_PATH + 1, curDir.GetBuffer(MAX_PATH + 1));
-      curDir.ReleaseBuffer();
-      if (needLength == 0 || needLength > MAX_PATH)
-        return false;
-      if (curDir[curDir.Length() - 1] != L'\\')
-        curDir += L'\\';
-    }
-  res = UString(L"\\\\?\\") + curDir + s;
-  return true;
-}
-
-bool GetLongPath(LPCWSTR path, UString &longPath)
-{
-  if (GetLongPathBase(path, longPath))
-    return !longPath.IsEmpty();
-  return false;
-}
-#endif
-
-namespace NIO {
-
-CFileBase::~CFileBase() { Close(); }
-
-bool CFileBase::Create(LPCTSTR fileName, DWORD desiredAccess,
-    DWORD shareMode, DWORD creationDisposition, DWORD flagsAndAttributes)
-{
-  if (!Close())
-    return false;
-  _handle = ::CreateFile(fileName, desiredAccess, shareMode,
-      (LPSECURITY_ATTRIBUTES)NULL, creationDisposition,
-      flagsAndAttributes, (HANDLE)NULL);
-  #ifdef WIN_LONG_PATH2
-  if (_handle == INVALID_HANDLE_VALUE)
-  {
-    UString longPath;
-    if (GetLongPath(fileName, longPath))
-      _handle = ::CreateFileW(longPath, desiredAccess, shareMode,
-        (LPSECURITY_ATTRIBUTES)NULL, creationDisposition,
-        flagsAndAttributes, (HANDLE)NULL);
-  }
-  #endif
-  return (_handle != INVALID_HANDLE_VALUE);
-}
-
-#ifndef _UNICODE
-bool CFileBase::Create(LPCWSTR fileName, DWORD desiredAccess,
-    DWORD shareMode, DWORD creationDisposition, DWORD flagsAndAttributes)
-{
-  if (!g_IsNT)
-    return Create(UnicodeStringToMultiByte(fileName, ::AreFileApisANSI() ? CP_ACP : CP_OEMCP),
-      desiredAccess, shareMode, creationDisposition, flagsAndAttributes);
-  if (!Close())
-    return false;
-  _handle = ::CreateFileW(fileName, desiredAccess, shareMode,
-    (LPSECURITY_ATTRIBUTES)NULL, creationDisposition,
-    flagsAndAttributes, (HANDLE)NULL);
-  #ifdef WIN_LONG_PATH
-  if (_handle == INVALID_HANDLE_VALUE)
-  {
-    UString longPath;
-    if (GetLongPath(fileName, longPath))
-      _handle = ::CreateFileW(longPath, desiredAccess, shareMode,
-        (LPSECURITY_ATTRIBUTES)NULL, creationDisposition,
-        flagsAndAttributes, (HANDLE)NULL);
-  }
-  #endif
-  return (_handle != INVALID_HANDLE_VALUE);
-}
-#endif
-
-bool CFileBase::Close()
-{
-  if (_handle == INVALID_HANDLE_VALUE)
-    return true;
-  if (!::CloseHandle(_handle))
-    return false;
-  _handle = INVALID_HANDLE_VALUE;
-  return true;
-}
-
-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.CTime = winFileInfo.ftCreationTime;
-  fileInfo.ATime = winFileInfo.ftLastAccessTime;
-  fileInfo.MTime = 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::OpenShared(LPCTSTR fileName, bool shareForWrite)
-{ return Open(fileName, FILE_SHARE_READ | (shareForWrite ? FILE_SHARE_WRITE : 0), OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL); }
-
-bool CInFile::Open(LPCTSTR fileName)
-  { return OpenShared(fileName, false); }
-
-#ifndef _UNICODE
-bool CInFile::Open(LPCWSTR fileName, DWORD shareMode, DWORD creationDisposition, DWORD flagsAndAttributes)
-  { return Create(fileName, GENERIC_READ, shareMode, creationDisposition, flagsAndAttributes); }
-
-bool CInFile::OpenShared(LPCWSTR fileName, bool shareForWrite)
-{ return Open(fileName, FILE_SHARE_READ | (shareForWrite ? FILE_SHARE_WRITE : 0), OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL); }
-
-bool CInFile::Open(LPCWSTR fileName)
-  { return OpenShared(fileName, false); }
-#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).
-
-// Probably in some version of Windows there are problems with other sizes:
-// for 32 MB (maybe also for 16 MB).
-// And message can be "Network connection was lost"
-
-static UInt32 kChunkSizeMax = (1 << 22);
-
-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 *cTime, const FILETIME *aTime, const FILETIME *mTime)
-  { return BOOLToBool(::SetFileTime(_handle, cTime, aTime, mTime)); }
-
-bool COutFile::SetMTime(const FILETIME *mTime) {  return SetTime(NULL, NULL, mTime); }
-
-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();
-}
-
-}}}