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implemented SRT Parser

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Luis Miguel Almánzar
2014-05-10 22:29:34 -04:00
parent 4e710ec0a4
commit f2237b858a
4 changed files with 212 additions and 6 deletions
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56
MediaBrowser.MediaEncoding/Subtitles/SrtParser.cs
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@@ -1,17 +1,61 @@
using System;
using System.Collections.Generic;
using System.Globalization;
using System.IO;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Text.RegularExpressions;
namespace MediaBrowser.MediaEncoding.Subtitles
{
public class SrtParser : ISubtitleParser
{
public SubtitleTrackInfo Parse(Stream stream)
{
throw new NotImplementedException();
private readonly CultureInfo _usCulture = new CultureInfo("en-US");
public SubtitleTrackInfo Parse(Stream stream) {
var trackInfo = new SubtitleTrackInfo();
using ( var reader = new StreamReader(stream))
{
string line;
while ((line = reader.ReadLine()) != null)
{
if (string.IsNullOrWhiteSpace(line))
{
continue;
}
var subEvent = new SubtitleTrackEvent {Id = line};
line = reader.ReadLine();
var time = Regex.Split(line, @"[\t ]*-->[\t ]*");
subEvent.StartPositionTicks = GetTicks(time[0]);
var endTime = time[1];
var idx = endTime.IndexOf(" ", StringComparison.Ordinal);
if (idx > 0)
endTime = endTime.Substring(0, idx);
subEvent.EndPositionTicks = GetTicks(endTime);
var multiline = new List<string>();
while ((line = reader.ReadLine()) != null)
{
if (string.IsNullOrEmpty(line))
{
break;
}
multiline.Add(line);
}
subEvent.Text = string.Join(@"\N", multiline);
subEvent.Text = Regex.Replace(subEvent.Text, "\\{(\\\\[\\w]+\\(?([\\w\\d]+,?)+\\)?)+\\}", string.Empty, RegexOptions.IgnoreCase);
subEvent.Text = Regex.Replace(subEvent.Text, "<", "&lt;", RegexOptions.IgnoreCase);
subEvent.Text = Regex.Replace(subEvent.Text, ">", "&gt;", RegexOptions.IgnoreCase);
subEvent.Text = Regex.Replace(subEvent.Text, "&lt;(\\/?(font|b|u|i|s))((\\s+(\\w|\\w[\\w\\-]*\\w)(\\s*=\\s*(?:\\\".*?\\\"|'.*?'|[^'\\\">\\s]+))?)+\\s*|\\s*)(\\/?)&gt;", "<$1$3$7>", RegexOptions.IgnoreCase);
subEvent.Text = Regex.Replace(subEvent.Text, @"\\N", "<br />",RegexOptions.IgnoreCase);
trackInfo.TrackEvents.Add(subEvent);
}
}
return trackInfo;
}
long GetTicks(string time) {
TimeSpan span;
return TimeSpan.TryParseExact(time, @"hh\:mm\:ss\.fff", _usCulture, out span)
? span.Ticks
: (TimeSpan.TryParseExact(time, @"hh\:mm\:ss\,fff", _usCulture, out span)
? span.Ticks : 0);
}
}
}