//============================================================================
// 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);
}
//============================================================================
// 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);
}
