void teCompressFile(const teString & from, const teString & to, u32 chunkSize, c8 * chunkInputBuffer, u32 chunkInputBufferSize, c8 * chunkOutputBuffer, u32 chunkOutputBufferSize, u1 highCompression, u1 localPath)
{
TE_ASSERT(chunkInputBufferSize >= chunkSize);
TE_ASSERT(chunkOutputBufferSize >= LZ4_compressBound(chunkSize));
teLZ4CompressionFunction compressionFunction = highCompression ? LZ4_compressHC : LZ4_compress;
IBuffer * fileInput = GetFileManager()->OpenFile(from, CFileBuffer::FWM_READ, localPath);
if(!fileInput)
return;
IBuffer * fileOutput = GetFileManager()->OpenFile(to, CFileBuffer::FWM_WRITE, localPath);
if(!fileOutput)
{
TE_SAFE_DROP(fileInput);
return;
}
fileInput->SetStreamMode(true);
fileOutput->SetStreamMode(true);
fileInput->Lock(BLT_READ);
fileInput->SetPosition(0);
fileOutput->Lock(BLT_WRITE);
fileOutput->SetPosition(0);
u32 magicNumber = ARCHIVE_MAGICNUMBER;
fileOutput->Write(&magicNumber, ARCHIVE_MAGICNUMBER_SIZE);
c8 * inBuffer = chunkInputBuffer;
c8 * outBuffer = chunkOutputBuffer;
u32 fileSize = 0;
while(true)
{
u32 inSize = teMin(chunkSize, fileInput->GetSize() - fileInput->GetPosition());
fileInput->Read(inBuffer, inSize);
fileSize += inSize;
if(!inSize)
break;
u32 outSize = compressionFunction(inBuffer, outBuffer + 4, inSize);
*(u32*)outBuffer = outSize;
fileOutput->Write(outBuffer, outSize + 4);
}
fileInput->Unlock();
fileOutput->Unlock();
TE_SAFE_DROP(fileInput);
TE_SAFE_DROP(fileOutput);
}
bool FileExists(const string &fName)
{
//this is so my RTPacker command line util will compile using this even though it doesn't use the filemanager
#if !defined(CLANLIB_1) && !defined(_CONSOLE)
if (GetFileManager())
{
return GetFileManager()->FileExists(fName, false);
}
#endif
FILE *fp = fopen( (fName).c_str(), "rb");
if (!fp)
{
//file not found
return NULL;
}
fclose(fp);
return true;
}
void teDecodeFile(const teString & from, const teString & to, u32 chunkSize, c8 * chunkInputBuffer, u32 chunkInputBufferSize, c8 * chunkOutputBuffer, u32 chunkOutputBufferSize, u1 localPath)
{
TE_ASSERT(chunkInputBufferSize >= LZ4_compressBound(chunkSize));
TE_ASSERT(chunkOutputBufferSize >= chunkSize);
IBuffer * fileInput = GetFileManager()->OpenFile(from, CFileBuffer::FWM_READ, localPath);
if(!fileInput)
return;
IBuffer * fileOutput = GetFileManager()->OpenFile(to, CFileBuffer::FWM_WRITE, localPath);
if(!fileOutput)
{
TE_SAFE_DROP(fileInput);
return;
}
fileInput->SetStreamMode(true);
fileOutput->SetStreamMode(true);
fileInput->Lock(BLT_READ);
fileInput->SetPosition(0);
u32 magicNumber = u32Max;
fileInput->Read(&magicNumber, ARCHIVE_MAGICNUMBER_SIZE);
TE_ASSERT(magicNumber == ARCHIVE_MAGICNUMBER);
fileOutput->Lock(BLT_WRITE);
fileOutput->SetPosition(0);
c8 * inBuffer = chunkInputBuffer;
c8 * outBuffer = chunkOutputBuffer;
while(true)
{
if((fileInput->GetSize() - fileInput->GetPosition()) < ARCHIVE_MAGICNUMBER_SIZE)
break;
u32 chunkSizeInFile;
fileInput->Read(&chunkSizeInFile, sizeof(u32));
if(chunkSizeInFile == ARCHIVE_MAGICNUMBER)
continue;
fileInput->Read(inBuffer, chunkSizeInFile);
s32 outputSize = LZ4_uncompress_unknownOutputSize(inBuffer, outBuffer, chunkSizeInFile, chunkSize);
if(outputSize < 0)
{
TE_LOG_ERR("lz4 decoding failed, corrupted input\n");
fileInput->Unlock();
fileOutput->Unlock();
TE_SAFE_DROP(fileInput);
TE_SAFE_DROP(fileOutput);
return;
}
fileOutput->Write(outBuffer, (u32)outputSize);
}
fileInput->Unlock();
fileOutput->Unlock();
TE_SAFE_DROP(fileInput);
TE_SAFE_DROP(fileOutput);
}
void FCDocument::SetFileUrl(const fstring& filename)
{
fileManager->PopRootFile();
fileUrl = GetFileManager()->GetCurrentUri().MakeAbsolute(filename);
fileManager->PushRootFile(fileUrl);
}
