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@ -1,71 +1,391 @@
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using System;
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using System.Collections.Generic;
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using System.Globalization;
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using System.IO;
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using System.Linq;
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using System.Text.RegularExpressions;
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using System.Text;
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using System.Threading;
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namespace MediaBrowser.MediaEncoding.Subtitles
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{
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/// <summary>
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/// Credit to https://github.com/SubtitleEdit/subtitleedit/blob/a299dc4407a31796364cc6ad83f0d3786194ba22/src/Logic/SubtitleFormats/SubStationAlpha.cs
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/// </summary>
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public class SsaParser : ISubtitleParser
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{
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private readonly CultureInfo _usCulture = new CultureInfo("en-US");
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public SubtitleTrackInfo Parse(Stream stream, CancellationToken cancellationToken)
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{
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var trackInfo = new SubtitleTrackInfo();
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var eventIndex = 1;
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using (var reader = new StreamReader(stream))
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{
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bool eventsStarted = false;
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string[] format = "Marked, Start, End, Style, Name, MarginL, MarginR, MarginV, Effect, Text".Split(',');
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int indexLayer = 0;
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int indexStart = 1;
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int indexEnd = 2;
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int indexStyle = 3;
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int indexName = 4;
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int indexEffect = 8;
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int indexText = 9;
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int lineNumber = 0;
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var header = new StringBuilder();
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string line;
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while (reader.ReadLine() != "[Events]")
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{}
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var headers = ParseFieldHeaders(reader.ReadLine());
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while ((line = reader.ReadLine()) != null)
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{
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cancellationToken.ThrowIfCancellationRequested();
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if (string.IsNullOrWhiteSpace(line))
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lineNumber++;
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if (!eventsStarted)
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header.AppendLine(line);
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if (line.Trim().ToLower() == "[events]")
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{
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continue;
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eventsStarted = true;
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}
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if(line.StartsWith("["))
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break;
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if(string.IsNullOrEmpty(line))
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continue;
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var subEvent = new SubtitleTrackEvent { Id = eventIndex.ToString(_usCulture) };
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eventIndex++;
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var sections = line.Substring(10).Split(',');
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subEvent.StartPositionTicks = GetTicks(sections[headers["Start"]]);
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subEvent.EndPositionTicks = GetTicks(sections[headers["End"]]);
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subEvent.Text = string.Join(",", sections.Skip(headers["Text"]));
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subEvent.Text = Regex.Replace(subEvent.Text, @"\{(\\[\w]+\(?([\w\d]+,?)+\)?)+\}", string.Empty, RegexOptions.IgnoreCase);
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trackInfo.TrackEvents.Add(subEvent);
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}
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else if (!string.IsNullOrEmpty(line) && line.Trim().StartsWith(";"))
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{
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// skip comment lines
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}
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else if (eventsStarted && line.Trim().Length > 0)
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{
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string s = line.Trim().ToLower();
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if (s.StartsWith("format:"))
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{
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if (line.Length > 10)
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{
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format = line.ToLower().Substring(8).Split(',');
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for (int i = 0; i < format.Length; i++)
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{
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if (format[i].Trim().ToLower() == "layer")
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indexLayer = i;
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else if (format[i].Trim().ToLower() == "start")
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indexStart = i;
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else if (format[i].Trim().ToLower() == "end")
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indexEnd = i;
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else if (format[i].Trim().ToLower() == "text")
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indexText = i;
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else if (format[i].Trim().ToLower() == "effect")
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indexEffect = i;
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else if (format[i].Trim().ToLower() == "style")
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indexStyle = i;
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}
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}
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}
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else if (!string.IsNullOrEmpty(s))
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{
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string text = string.Empty;
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string start = string.Empty;
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string end = string.Empty;
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string style = string.Empty;
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string layer = string.Empty;
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string effect = string.Empty;
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string name = string.Empty;
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string[] splittedLine;
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if (s.StartsWith("dialogue:"))
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splittedLine = line.Substring(10).Split(',');
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else
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splittedLine = line.Split(',');
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for (int i = 0; i < splittedLine.Length; i++)
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{
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if (i == indexStart)
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start = splittedLine[i].Trim();
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else if (i == indexEnd)
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end = splittedLine[i].Trim();
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else if (i == indexLayer)
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layer = splittedLine[i];
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else if (i == indexEffect)
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effect = splittedLine[i];
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else if (i == indexText)
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text = splittedLine[i];
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else if (i == indexStyle)
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style = splittedLine[i];
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else if (i == indexName)
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name = splittedLine[i];
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else if (i > indexText)
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text += "," + splittedLine[i];
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}
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try
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{
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var p = new SubtitleTrackEvent();
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p.StartPositionTicks = GetTimeCodeFromString(start);
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p.EndPositionTicks = GetTimeCodeFromString(end);
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p.Text = GetFormattedText(text);
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trackInfo.TrackEvents.Add(p);
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}
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catch
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{
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}
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}
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}
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}
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//if (header.Length > 0)
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//subtitle.Header = header.ToString();
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//subtitle.Renumber(1);
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}
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return trackInfo;
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}
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long GetTicks(string time)
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private static long GetTimeCodeFromString(string time)
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{
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// h:mm:ss.cc
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string[] timeCode = time.Split(':', '.');
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return new TimeSpan(0, int.Parse(timeCode[0]),
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int.Parse(timeCode[1]),
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int.Parse(timeCode[2]),
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int.Parse(timeCode[3]) * 10).Ticks;
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}
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public static string GetFormattedText(string text)
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{
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text = text.Replace("\\N", Environment.NewLine).Replace("\\n", Environment.NewLine);
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bool italic = false;
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for (int i = 0; i < 10; i++) // just look ten times...
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{
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if (text.Contains(@"{\fn"))
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{
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int start = text.IndexOf(@"{\fn");
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int end = text.IndexOf('}', start);
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if (end > 0 && !text.Substring(start).StartsWith("{\\fn}"))
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{
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string fontName = text.Substring(start + 4, end - (start + 4));
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string extraTags = string.Empty;
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CheckAndAddSubTags(ref fontName, ref extraTags, out italic);
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text = text.Remove(start, end - start + 1);
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if (italic)
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text = text.Insert(start, "<font face=\"" + fontName + "\"" + extraTags + "><i>");
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else
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text = text.Insert(start, "<font face=\"" + fontName + "\"" + extraTags + ">");
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int indexOfEndTag = text.IndexOf("{\\fn}", start);
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if (indexOfEndTag > 0)
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text = text.Remove(indexOfEndTag, "{\\fn}".Length).Insert(indexOfEndTag, "</font>");
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else
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text += "</font>";
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}
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}
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if (text.Contains(@"{\fs"))
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{
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int start = text.IndexOf(@"{\fs");
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int end = text.IndexOf('}', start);
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if (end > 0 && !text.Substring(start).StartsWith("{\\fs}"))
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{
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string fontSize = text.Substring(start + 4, end - (start + 4));
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string extraTags = string.Empty;
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CheckAndAddSubTags(ref fontSize, ref extraTags, out italic);
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if (IsInteger(fontSize))
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{
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text = text.Remove(start, end - start + 1);
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if (italic)
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text = text.Insert(start, "<font size=\"" + fontSize + "\"" + extraTags + "><i>");
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else
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text = text.Insert(start, "<font size=\"" + fontSize + "\"" + extraTags + ">");
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int indexOfEndTag = text.IndexOf("{\\fs}", start);
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if (indexOfEndTag > 0)
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text = text.Remove(indexOfEndTag, "{\\fs}".Length).Insert(indexOfEndTag, "</font>");
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else
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text += "</font>";
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}
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}
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}
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if (text.Contains(@"{\c"))
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{
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int start = text.IndexOf(@"{\c");
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int end = text.IndexOf('}', start);
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if (end > 0 && !text.Substring(start).StartsWith("{\\c}"))
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{
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string color = text.Substring(start + 4, end - (start + 4));
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string extraTags = string.Empty;
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CheckAndAddSubTags(ref color, ref extraTags, out italic);
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color = color.Replace("&", string.Empty).TrimStart('H');
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color = color.PadLeft(6, '0');
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// switch to rrggbb from bbggrr
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color = "#" + color.Remove(color.Length - 6) + color.Substring(color.Length - 2, 2) + color.Substring(color.Length - 4, 2) + color.Substring(color.Length - 6, 2);
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color = color.ToLower();
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text = text.Remove(start, end - start + 1);
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if (italic)
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text = text.Insert(start, "<font color=\"" + color + "\"" + extraTags + "><i>");
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else
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text = text.Insert(start, "<font color=\"" + color + "\"" + extraTags + ">");
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int indexOfEndTag = text.IndexOf("{\\c}", start);
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if (indexOfEndTag > 0)
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text = text.Remove(indexOfEndTag, "{\\c}".Length).Insert(indexOfEndTag, "</font>");
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else
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text += "</font>";
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}
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}
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if (text.Contains(@"{\1c")) // "1" specifices primary color
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{
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int start = text.IndexOf(@"{\1c");
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int end = text.IndexOf('}', start);
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if (end > 0 && !text.Substring(start).StartsWith("{\\1c}"))
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{
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string color = text.Substring(start + 5, end - (start + 5));
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string extraTags = string.Empty;
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CheckAndAddSubTags(ref color, ref extraTags, out italic);
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color = color.Replace("&", string.Empty).TrimStart('H');
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color = color.PadLeft(6, '0');
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// switch to rrggbb from bbggrr
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color = "#" + color.Remove(color.Length - 6) + color.Substring(color.Length - 2, 2) + color.Substring(color.Length - 4, 2) + color.Substring(color.Length - 6, 2);
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color = color.ToLower();
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text = text.Remove(start, end - start + 1);
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if (italic)
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text = text.Insert(start, "<font color=\"" + color + "\"" + extraTags + "><i>");
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else
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text = text.Insert(start, "<font color=\"" + color + "\"" + extraTags + ">");
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text += "</font>";
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}
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}
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}
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text = text.Replace(@"{\i1}", "<i>");
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text = text.Replace(@"{\i0}", "</i>");
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text = text.Replace(@"{\i}", "</i>");
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if (CountTagInText(text, "<i>") > CountTagInText(text, "</i>"))
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text += "</i>";
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text = text.Replace(@"{\u1}", "<u>");
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text = text.Replace(@"{\u0}", "</u>");
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text = text.Replace(@"{\u}", "</u>");
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if (CountTagInText(text, "<u>") > CountTagInText(text, "</u>"))
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text += "</u>";
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text = text.Replace(@"{\b1}", "<b>");
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text = text.Replace(@"{\b0}", "</b>");
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text = text.Replace(@"{\b}", "</b>");
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if (CountTagInText(text, "<b>") > CountTagInText(text, "</b>"))
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text += "</b>";
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return text;
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}
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private static bool IsInteger(string s)
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{
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TimeSpan span;
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return TimeSpan.TryParseExact(time, @"h\:mm\:ss\.ff", _usCulture, out span)
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? span.Ticks: 0;
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int i;
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if (int.TryParse(s, out i))
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return true;
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return false;
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}
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private Dictionary<string,int> ParseFieldHeaders(string line) {
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var fields = line.Substring(8).Split(',').Select(x=>x.Trim()).ToList();
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private static int CountTagInText(string text, string tag)
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{
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int count = 0;
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int index = text.IndexOf(tag);
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while (index >= 0)
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{
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count++;
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if (index == text.Length)
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return count;
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index = text.IndexOf(tag, index + 1);
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}
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return count;
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}
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private static void CheckAndAddSubTags(ref string tagName, ref string extraTags, out bool italic)
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{
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italic = false;
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int indexOfSPlit = tagName.IndexOf(@"\");
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if (indexOfSPlit > 0)
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{
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string rest = tagName.Substring(indexOfSPlit).TrimStart('\\');
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tagName = tagName.Remove(indexOfSPlit);
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for (int i = 0; i < 10; i++)
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{
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if (rest.StartsWith("fs") && rest.Length > 2)
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{
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indexOfSPlit = rest.IndexOf(@"\");
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string fontSize = rest;
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if (indexOfSPlit > 0)
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{
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fontSize = rest.Substring(0, indexOfSPlit);
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rest = rest.Substring(indexOfSPlit).TrimStart('\\');
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}
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else
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{
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rest = string.Empty;
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}
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extraTags += " size=\"" + fontSize.Substring(2) + "\"";
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}
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else if (rest.StartsWith("fn") && rest.Length > 2)
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{
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indexOfSPlit = rest.IndexOf(@"\");
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string fontName = rest;
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if (indexOfSPlit > 0)
|
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{
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fontName = rest.Substring(0, indexOfSPlit);
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rest = rest.Substring(indexOfSPlit).TrimStart('\\');
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}
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else
|
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|
|
{
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rest = string.Empty;
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|
}
|
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|
extraTags += " face=\"" + fontName.Substring(2) + "\"";
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|
|
}
|
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|
else if (rest.StartsWith("c") && rest.Length > 2)
|
|
|
|
|
{
|
|
|
|
|
indexOfSPlit = rest.IndexOf(@"\");
|
|
|
|
|
string fontColor = rest;
|
|
|
|
|
if (indexOfSPlit > 0)
|
|
|
|
|
{
|
|
|
|
|
fontColor = rest.Substring(0, indexOfSPlit);
|
|
|
|
|
rest = rest.Substring(indexOfSPlit).TrimStart('\\');
|
|
|
|
|
}
|
|
|
|
|
else
|
|
|
|
|
{
|
|
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|
|
rest = string.Empty;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
string color = fontColor.Substring(2);
|
|
|
|
|
color = color.Replace("&", string.Empty).TrimStart('H');
|
|
|
|
|
color = color.PadLeft(6, '0');
|
|
|
|
|
// switch to rrggbb from bbggrr
|
|
|
|
|
color = "#" + color.Remove(color.Length - 6) + color.Substring(color.Length - 2, 2) + color.Substring(color.Length - 4, 2) + color.Substring(color.Length - 6, 2);
|
|
|
|
|
color = color.ToLower();
|
|
|
|
|
|
|
|
|
|
var result = new Dictionary<string, int> {
|
|
|
|
|
{"Start", fields.IndexOf("Start")},
|
|
|
|
|
{"End", fields.IndexOf("End")},
|
|
|
|
|
{"Text", fields.IndexOf("Text")}
|
|
|
|
|
};
|
|
|
|
|
return result;
|
|
|
|
|
extraTags += " color=\"" + color + "\"";
|
|
|
|
|
}
|
|
|
|
|
else if (rest.StartsWith("i1") && rest.Length > 1)
|
|
|
|
|
{
|
|
|
|
|
indexOfSPlit = rest.IndexOf(@"\");
|
|
|
|
|
italic = true;
|
|
|
|
|
if (indexOfSPlit > 0)
|
|
|
|
|
{
|
|
|
|
|
rest = rest.Substring(indexOfSPlit).TrimStart('\\');
|
|
|
|
|
}
|
|
|
|
|
else
|
|
|
|
|
{
|
|
|
|
|
rest = string.Empty;
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
else if (rest.Length > 0 && rest.Contains("\\"))
|
|
|
|
|
{
|
|
|
|
|
indexOfSPlit = rest.IndexOf(@"\");
|
|
|
|
|
rest = rest.Substring(indexOfSPlit).TrimStart('\\');
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
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|
|
Luke Pulverenti
10 years ago