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

third_party/lzma/v4_65/files/CPP/Common/C_FileIO.cpp

-// Common/C_FileIO.h
-
-#include "C_FileIO.h"
-
-#include <fcntl.h>
-#include <unistd.h>
-
-namespace NC {
-namespace NFile {
-namespace NIO {
-
-bool CFileBase::OpenBinary(const char *name, int flags)
-{
-  #ifdef O_BINARY
-  flags |= O_BINARY;
-  #endif
-  Close();
-  _handle = ::open(name, flags, 0666);
-  return _handle != -1;
-}
-
-bool CFileBase::Close()
-{
-  if (_handle == -1)
-    return true;
-  if (close(_handle) != 0)
-    return false;
-  _handle = -1;
-  return true;
-}
-
-bool CFileBase::GetLength(UInt64 &length) const
-{
-  off_t curPos = Seek(0, SEEK_CUR);
-  off_t lengthTemp = Seek(0, SEEK_END);
-  Seek(curPos, SEEK_SET);
-  length = (UInt64)lengthTemp;
-  return true;
-}
-
-off_t CFileBase::Seek(off_t distanceToMove, int moveMethod) const
-{
-  return ::lseek(_handle, distanceToMove, moveMethod);
-}
-
-/////////////////////////
-// CInFile
-
-bool CInFile::Open(const char *name)
-{
-  return CFileBase::OpenBinary(name, O_RDONLY);
-}
-
-bool CInFile::OpenShared(const char *name, bool)
-{
-  return Open(name);
-}
-
-ssize_t CInFile::Read(void *data, size_t size)
-{
-  return read(_handle, data, size);
-}
-
-/////////////////////////
-// COutFile
-
-bool COutFile::Create(const char *name, bool createAlways)
-{
-  if (createAlways)
-  {
-    Close();
-    _handle = ::creat(name, 0666);
-    return _handle != -1;
-  }
-  return OpenBinary(name, O_CREAT | O_EXCL | O_WRONLY);
-}
-
-bool COutFile::Open(const char *name, DWORD creationDisposition)
-{
-  return Create(name, false);
-}
-
-ssize_t COutFile::Write(const void *data, size_t size)
-{
-  return write(_handle, data, size);
-}
-
-}}}