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// Common/C_FileIO.cpp
#include "C_FileIO.h"
#include <fcntl.h>
#ifdef _WIN32
#include <io.h>
#else
#include <unistd.h>
#endif
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);
}
}}}
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