void LogFileImpl::createFile()
{
std::wstring upath;
FileImpl::convertPath(_path, upath);
_hFile = CreateFileW(upath.c_str(), GENERIC_WRITE, FILE_SHARE_READ, NULL, OPEN_ALWAYS, FILE_ATTRIBUTE_NORMAL, NULL);
if (_hFile == INVALID_HANDLE_VALUE) throw OpenFileException(_path);
SetFilePointer(_hFile, 0, 0, FILE_END);
// There seems to be a strange "optimization" in the Windows NTFS
// filesystem that causes it to reuse directory entries of deleted
// files. Example:
// 1. create a file named "test.dat"
// note the file's creation date
// 2. delete the file "test.dat"
// 3. wait a few seconds
// 4. create a file named "test.dat"
// the new file will have the same creation
// date as the old one.
// We work around this bug by taking the file's
// modification date as a reference when the
// file is empty.
if (sizeImpl() == 0)
_creationDate = File(_path).getLastModified();
else
_creationDate = File(_path).created();
}
LogFileImpl::LogFileImpl(const std::string& path):
_path(path),
_str(_path, std::ios::app)
{
if (sizeImpl() == 0)
_creationDate = File(path).getLastModified();
else
_creationDate = File(path).created();
}
LogFileImpl::LogFileImpl(const std::string& path): _path(path), _hFile(INVALID_HANDLE_VALUE)
{
File file(path);
if (file.exists())
{
if (0 == sizeImpl())
_creationDate = file.getLastModified();
else
_creationDate = file.created();
}
}