static bool ShouldReplaceWith(const VfsFile& previousFile, const VfsFile& newFile)
{
// 1) priority (override mods)
if(newFile.Priority() < previousFile.Priority())
return false;
if(newFile.Priority() > previousFile.Priority())
return true;
// 2) timestamp
{
const double howMuchNewer = difftime(newFile.MTime(), previousFile.MTime());
const double threshold = 2.0; // FAT timestamp resolution [seconds]
if(howMuchNewer > threshold) // newer
return true;
if(howMuchNewer < -threshold) // older
return false;
// else: "equal" (tolerating small differences due to FAT's low
// mtime resolution)
}
// 3) precedence (efficiency of file provider)
if(newFile.Loader()->Precedence() < previousFile.Loader()->Precedence())
return false;
return true;
}
std::wstring FileDescription(const VfsFile& file)
{
wchar_t timestamp[25];
const time_t mtime = file.MTime();
wcsftime(timestamp, ARRAY_SIZE(timestamp), L"%a %b %d %H:%M:%S %Y", localtime(&mtime));
wchar_t buf[200];
swprintf_s(buf, ARRAY_SIZE(buf), L"(%c; %6lu; %ls) %ls", file.Loader()->LocationCode(), (unsigned long)file.Size(), timestamp, file.Name().string().c_str());
return buf;
}
virtual Status GetFileInfo(const VfsPath& pathname, FileInfo* pfileInfo) const
{
ScopedLock s;
VfsDirectory* directory; VfsFile* file;
Status ret = vfs_Lookup(pathname, &m_rootDirectory, directory, &file);
if(!pfileInfo) // just indicate if the file exists without raising warnings.
return ret;
WARN_RETURN_STATUS_IF_ERR(ret);
*pfileInfo = FileInfo(file->Name(), file->Size(), file->MTime());
return INFO::OK;
}