Esempio n. 1
0
//============================================================================
//		NFileUtilities::SetFileData : Set a file to data.
//----------------------------------------------------------------------------
NStatus NFileUtilities::SetFileData(const NFile &theFile, const NData &theData)
{	uint64_t		theSize, numWritten;
	NFile			mutableFile;
	NStatus			theErr;



	// Get the state we need
	mutableFile = theFile;
	theSize     = theData.GetSize();



	// Open the file
	theErr = mutableFile.Open(kNPermissionUpdate, true);
	if (theErr != kNoErr)
		return(theErr);



	// Write the data
	theErr  = mutableFile.SetSize(0);
	theErr |= mutableFile.Write(theSize, theData.GetData(), numWritten);

	NN_ASSERT_NOERR(theErr);
	NN_ASSERT(numWritten == theSize);



	// Clean up
	mutableFile.Close();
	
	return(theErr);
}
Esempio n. 2
0
//============================================================================
//		NFileUtilities::GetFileData : Get a file as data.
//----------------------------------------------------------------------------
NData NFileUtilities::GetFileData(const NFile &theFile)
{	uint64_t		theSize, numRead;
	NFile			mutableFile;
	NData			theData;
	NStatus			theErr;



	// Get the state we need
	mutableFile = theFile;
	theSize     = mutableFile.GetSize();
	NN_ASSERT( ((int64_t) theSize) <= kInt32Max);



	// Resize the buffer
	if (!theData.SetSize((NIndex) theSize))
		return(theData);



	// Open the file
	theErr = mutableFile.Open();
	if (theErr != kNoErr)
		{
		theData.Clear();
		return(theData);
		}



	// Read the data
	theErr = mutableFile.Read(theSize, theData.GetData(), numRead);
	theData.SetSize((NIndex) numRead);

	NN_ASSERT_NOERR(theErr);
	NN_ASSERT(numRead == theSize);
	NN_ASSERT(((int64_t) numRead) <= kInt32Max);



	// Clean up
	mutableFile.Close();

	return(theData);
}