// ReSharper restore UnusedMember.Local
private bool CreateCache(ILoadMonitor loader, IProgressStatus status, int percent)
{
var sm = loader.StreamManager;
BufferedStream stream = new BufferedStream(CreateStream(loader), 32 * 1024);
int version = 1;
string id = string.Empty, revision = string.Empty;
int size = ReadSize(stream);
int i;
if (size == 0)
{
version = 2;
size = ReadSize(stream);
const int countLibHeader = 256 - 8;
byte[] libHeader = new byte[countLibHeader];
if (stream.Read(libHeader, 0, libHeader.Length) != libHeader.Length)
{
throw new InvalidDataException(Resources.XHunterLibrary_CreateCache_Data_truncation_in_library_header_File_may_be_corrupted);
}
for (i = 0; i < libHeader.Length; i++)
{
if (libHeader[i] == 0)
{
break;
}
}
string header = Encoding.UTF8.GetString(libHeader, 0, i);
Match match = REGEX_HEADER.Match(header);
if (match.Success)
{
version = int.Parse(match.Groups[1].Value);
id = match.Groups[2].Value;
revision = match.Groups[3].Value;
}
}
var setLibKeys = new HashSet <LibKey>(size);
var libraryEntries = new List <XHunterSpectrumInfo>(size);
const int countHeader = ((int)SpectrumHeaders2.count) * sizeof(int);
byte[] specHeader = new byte[1024];
byte[] specSequence = new byte[1024];
i = 0;
while (stream.Read(specHeader, 0, countHeader) == countHeader)
{
int percentComplete = (i++ *percent / size);
if (status.PercentComplete != percentComplete)
{
// Check for cancellation after each integer change in percent loaded.
if (loader.IsCanceled)
{
loader.UpdateProgress(status.Cancel());
return(false);
}
// If not cancelled, update progress.
loader.UpdateProgress(status = status.ChangePercentComplete(percentComplete));
}
int charge = (version == 1
? GetInt32(specHeader, ((int)SpectrumHeaders1.charge))
: GetInt32(specHeader, ((int)SpectrumHeaders2.charge)));
float i2 = (version == 1
? GetSingle(specHeader, ((int)SpectrumHeaders1.i2))
: GetSingle(specHeader, ((int)SpectrumHeaders2.i2)));
int seqLength = (version == 1
? GetInt32(specHeader, ((int)SpectrumHeaders1.seq_len))
: GetInt32(specHeader, ((int)SpectrumHeaders2.seq_len)));
float expect = (version == 1 ? 0.001f : GetSingle(specHeader, (int)SpectrumHeaders2.expect));
// Read sequence information
ReadComplete(stream, specSequence, seqLength);
specSequence[seqLength] = 0;
short numPeaks = (short)ReadSize(stream);
// Save spectrum location
long location = stream.Position;
// Read over spectrum
int countPeaks = (sizeof(byte) + sizeof(float)) * numPeaks;
stream.Seek(countPeaks, SeekOrigin.Current); // Skip spectrum
// Read modifications
int numMods = ReadSize(stream);
string modifiedSequence = Encoding.UTF8.GetString(specSequence, 0, seqLength);
if (numMods > 0)
{
StringBuilder sb = new StringBuilder();
ReadComplete(stream, specHeader, (4 + sizeof(double)) * numMods);
int iLast = 0;
double modTotal = 0;
for (int j = 0; j < numMods; j++)
{
int iPos = GetInt32(specHeader, j * 3);
double mod = BitConverter.ToDouble(specHeader, (j * 3 + 1) * 4);
// X! Hunter allows multiple modifications on the same
// residue. So, they need to be totaled, and assigned to a
// single residue to allow them to match Skyline modification
// settings.
if (iPos > iLast)
{
if (modTotal != 0)
{
sb.Append(SequenceMassCalc.GetModDiffDescription(modTotal));
}
sb.Append(Encoding.UTF8.GetString(specSequence, iLast, iPos - iLast));
modTotal = 0;
}
modTotal += mod;
iLast = iPos;
}
if (modTotal != 0)
{
sb.Append(SequenceMassCalc.GetModDiffDescription(modTotal));
}
sb.Append(Encoding.UTF8.GetString(specSequence, iLast, seqLength - iLast));
modifiedSequence = sb.ToString();
}
// Skip over homologs (list of protein IDs and start positions from a FASTA
// file used to generate the library)
int numHomologs = ReadSize(stream);
for (int j = 0; j < numHomologs; j++)
{
stream.Seek(ReadSize(stream) + 4, SeekOrigin.Current);
}
// These libraries should not have duplicates, but just in case.
// Apparently, GPM libraries do contain redundancies, as we found
// when a revision lost this test.
var key = new LibKey(modifiedSequence, charge);
if (setLibKeys.Add(key))
{
libraryEntries.Add(new XHunterSpectrumInfo(key, i2, expect, numPeaks, location));
}
}
libraryEntries = FilterInvalidLibraryEntries(ref status, libraryEntries);
using (FileSaver fs = new FileSaver(CachePath, sm))
using (Stream outStream = sm.CreateStream(fs.SafeName, FileMode.Create, true))
{
foreach (var info in libraryEntries)
{
info.Key.Write(outStream);
PrimitiveArrays.WriteOneValue(outStream, info.Location);
PrimitiveArrays.WriteOneValue(outStream, info.ProcessedIntensity);
PrimitiveArrays.WriteOneValue(outStream, info.NumPeaks);
PrimitiveArrays.WriteOneValue(outStream, info.Expect);
}
byte[] revisionBytes = Encoding.UTF8.GetBytes(revision);
outStream.Write(revisionBytes, 0, revisionBytes.Length);
byte[] idBytes = Encoding.UTF8.GetBytes(id);
outStream.Write(idBytes, 0, idBytes.Length);
outStream.Write(BitConverter.GetBytes(revisionBytes.Length), 0, sizeof(int));
outStream.Write(BitConverter.GetBytes(idBytes.Length), 0, sizeof(int));
outStream.Write(BitConverter.GetBytes(FORMAT_VERSION_CACHE), 0, sizeof(int));
outStream.Write(BitConverter.GetBytes(libraryEntries.Count), 0, sizeof(int));
outStream.Write(BitConverter.GetBytes((long)0), 0, sizeof(long));
sm.Finish(outStream);
fs.Commit();
sm.SetCache(FilePath, CachePath);
}
loader.UpdateProgress(status.Complete());
return(true);
}