void ReadEntry(const VfsPath& pathname, const FileInfo& fileInfo, PIArchiveFile archiveFile)
{
if (pathname == L"metadata.json" && m_Metadata)
{
std::string buffer;
buffer.resize(fileInfo.Size());
WARN_IF_ERR(archiveFile->Load("", DummySharedPtr((u8*)buffer.data()), buffer.size()));
*m_Metadata = m_ScriptInterface.ParseJSON(buffer);
}
else if (pathname == L"simulation.dat" && m_SavedState)
{
m_SavedState->resize(fileInfo.Size());
WARN_IF_ERR(archiveFile->Load("", DummySharedPtr((u8*)m_SavedState->data()), m_SavedState->size()));
}
}
// write the specified texture to disk.
// note: <t> cannot be made const because the image may have to be
// transformed to write it out in the format determined by <fn>'s extension.
Status tex_write(Tex* t, const VfsPath& filename)
{
DynArray da;
RETURN_STATUS_IF_ERR(t->encode(filename.Extension(), &da));
// write to disk
Status ret = INFO::OK;
{
shared_ptr<u8> file = DummySharedPtr(da.base);
const ssize_t bytes_written = g_VFS->CreateFile(filename, file, da.pos);
if(bytes_written > 0)
ENSURE(bytes_written == (ssize_t)da.pos);
else
ret = (Status)bytes_written;
}
(void)da_free(&da);
return ret;
}
virtual Status LoadFile(const VfsPath& pathname, shared_ptr<u8>& fileContents, size_t& size)
{
ScopedLock s;
const bool isCacheHit = m_fileCache.Retrieve(pathname, fileContents, size);
if(!isCacheHit)
{
VfsDirectory* directory; VfsFile* file;
// per 2010-05-01 meeting, this shouldn't raise 'scary error
// dialogs', which might fail to display the culprit pathname
// instead, callers should log the error, including pathname.
RETURN_STATUS_IF_ERR(vfs_Lookup(pathname, &m_rootDirectory, directory, &file));
fileContents = DummySharedPtr((u8*)0);
size = file->Size();
if(size != 0) // (the file cache can't handle zero-length allocations)
{
if(size < m_cacheSize/2) // (avoid evicting lots of previous data)
fileContents = m_fileCache.Reserve(size);
if(fileContents)
{
RETURN_STATUS_IF_ERR(file->Loader()->Load(file->Name(), fileContents, file->Size()));
m_fileCache.Add(pathname, fileContents, size);
}
else
{
RETURN_STATUS_IF_ERR(AllocateAligned(fileContents, size, maxSectorSize));
RETURN_STATUS_IF_ERR(file->Loader()->Load(file->Name(), fileContents, file->Size()));
}
}
}
stats_io_user_request(size);
stats_cache(isCacheHit? CR_HIT : CR_MISS, size);
m_trace->NotifyLoad(pathname, size);
return INFO::OK;
}