private static WebVTTDocument ParseDocument(StringReader reader, TimeSpan timeOffset)
{
var blockReader = new BlockDocumentReader(reader);
if (!blockReader.ReadBlock().StartsWith(bodyIdentifier)) throw new Exception("Invalid WebVTT start identifier");
var result = new WebVTTDocument();
WebVTTCue previousCue = null;
while (true)
{
var block = blockReader.ReadBlock();
if (block == null) break;
else if (!block.StartsWith(noteIdentifier)) // ignore comments
{
// cue found
var cue = ParseCue(block, timeOffset);
if (previousCue != null && cue.Begin < previousCue.Begin) throw new Exception("Invalid WebVTT cue start time");
if (cue.End <= cue.Begin) throw new Exception("Invalid WebVTT cue end time");
result.Cues.Add(cue);
previousCue = cue;
}
}
return result;
}
private static WebVTTDocument ParseDocument(StringReader reader, TimeSpan timeOffset)
{
var blockReader = new BlockDocumentReader(reader);
if (!blockReader.ReadBlock().StartsWith(bodyIdentifier))
{
throw new Exception("Invalid WebVTT start identifier");
}
var result = new WebVTTDocument();
WebVTTCue previousCue = null;
while (true)
{
var block = blockReader.ReadBlock();
if (block == null)
{
break;
}
else if (!block.StartsWith(noteIdentifier)) // ignore comments
{
// cue found
var cue = ParseCue(block, timeOffset);
if (previousCue != null && cue.Begin < previousCue.Begin)
{
throw new Exception("Invalid WebVTT cue start time");
}
if (cue.End <= cue.Begin)
{
throw new Exception("Invalid WebVTT cue end time");
}
result.Cues.Add(cue);
previousCue = cue;
}
}
return(result);
}