private static object[] ProcessParameter(object parameter)
{
if (parameter == null)
{
return new object[] { string.Empty }
}
;
var bytes = parameter as byte[];
if (bytes != null)
{
return(bytes.OfType <object>().ToArray());
}
var s = parameter as string;
if (s != null)
{
parameter = CsvUtilities.EscapeString(s);
}
return(new[] { parameter });
}
#endregion
}
private static Record ReadRecord(
StreamReader streamReader,
int lineNumber,
MidiFileCsvConversionSettings settings)
{
var line = Enumerable.Range(0, int.MaxValue)
.Select(i => new
{
LineNumber = lineNumber + i,
Line = streamReader.ReadLine()?.Trim()
})
.FirstOrDefault(l => l.Line != string.Empty);
if (string.IsNullOrEmpty(line.Line))
{
return(null);
}
var lineNumberOffset = 0;
var parts = CsvUtilities.SplitCsvValues(line.Line, settings.CsvDelimiter, () =>
{
var nextLine = streamReader.ReadLine();
if (nextLine != null)
{
lineNumberOffset++;
}
return(nextLine);
});
if (parts.Length < 3)
{
ThrowBadFormat(line.LineNumber, "Missing required parameters.");
}
int parsedTrackNumber;
var trackNumber = int.TryParse(parts[0], out parsedTrackNumber)
? (int?)parsedTrackNumber
: null;
ITimeSpan time = null;
TimeSpanUtilities.TryParse(parts[1], settings.TimeType, out time);
var recordType = parts[2];
if (string.IsNullOrEmpty(recordType))
{
ThrowBadFormat(line.LineNumber, "Record type isn't specified.");
}
var parameters = parts.Skip(3).ToArray();
lineNumber = line.LineNumber + lineNumberOffset;
return(new Record(line.LineNumber, trackNumber, time, recordType, parameters));
}
private static void WriteRecord(
StreamWriter streamWriter,
int?trackNumber,
long?time,
string type,
MidiFileCsvConversionSettings settings,
TempoMap tempoMap,
params object[] parameters)
{
var convertedTime = time == null
? null
: TimeConverter.ConvertTo(time.Value, settings.TimeType, tempoMap);
var processedParameters = parameters.SelectMany(ProcessParameter);
streamWriter.WriteLine(CsvUtilities.MergeCsvValues(
settings.CsvDelimiter,
new object[] { trackNumber, convertedTime, type }.Concat(processedParameters)));
}
