public AssDocument(string filePath, List <AssStyleOptions> styleOptions = null)
{
RegisterTagHandlers();
Dictionary <string, AssDocumentSection> fileSections = ReadDocument(filePath);
AssDocumentSection infoSection = fileSections["Script Info"];
VideoDimensions = new Size(infoSection.GetItemInt("PlayResX", 384), infoSection.GetItemInt("PlayResY", 288));
_styles = fileSections["V4+ Styles"].MapItems("Style", i => new AssStyle(i))
.ToDictionary(s => s.Name);
if (styleOptions != null)
{
_styleOptions = styleOptions.ToDictionary(o => o.Name);
}
foreach (AssDialogue dialogue in fileSections["Events"].MapItems("Dialogue", i => new AssDialogue(i)))
{
AssStyle style = GetStyle(dialogue.Style);
if (style == null)
{
throw new Exception($"Line \"{dialogue.Text}\" refers to style \"{dialogue.Style}\" which doesn't exist.");
}
AssStyleOptions options = GetStyleOptions(dialogue.Style);
List <AssLine> lines = ParseLine(dialogue, style, options);
Lines.AddRange(lines.SelectMany(ExpandLine));
}
foreach (AssLine line in Lines)
{
MergeIdenticallyFormattedSections(line);
line.NormalizeAlpha();
}
}
private List <AssLine> ParseLine(AssDialogue dialogue, AssStyle style, AssStyleOptions styleOptions)
{
AssLine line = new AssLine(dialogue.Start, dialogue.End)
{
AnchorPoint = style.AnchorPoint, KaraokeType = SimpleKaraokeType
};
AssTagContext context = new AssTagContext
{
Document = this,
InitialStyle = style,
InitialStyleOptions = styleOptions,
Style = style,
StyleOptions = styleOptions,
Line = line,
Section = new AssSection(null)
};
ApplyStyle(context.Section, style, styleOptions);
CreateTagSections(line, dialogue.Text, context);
CreateRubySections(line);
List <AssLine> lines = new List <AssLine> {
line
};
foreach (AssTagContext.PostProcessor postProcessor in context.PostProcessors)
{
List <AssLine> extraLines = postProcessor();
if (extraLines != null)
{
lines.AddRange(extraLines);
}
}
return(lines);
}
private void WriteLineMetadata(AssLine line, AssStyle style, StreamWriter writer)
{
string effects = !line.AndroidDarkTextHackAllowed ? EffectNames.NoAndroidDarkTextHack : string.Empty;
writer.Write($"Dialogue: 0,{line.Start:H:mm:ss.ff},{line.End:H:mm:ss.ff},{style.Name},,0,0,0,{effects},");
}
protected virtual void WriteLine(AssLine line, StreamWriter writer)
{
if (line.Sections.Count == 0)
{
return;
}
AssStyle style = GetStyleMatchingStructure((AssSection)line.Sections[0]);
WriteLineMetadata(line, style, writer);
AssSection prevSection = new AssSection();
AssStyle prevStyle = style;
ApplyStyle(prevSection, prevStyle);
AssLineContentBuilder lineContent = new AssLineContentBuilder();
AppendLineTags(line, style, lineContent);
RubyPart currentRubyPosition = RubyPart.None;
for (int i = 0; i < line.Sections.Count; i++)
{
AssSection section = (AssSection)line.Sections[i];
style = GetStyleMatchingStructure(section);
if (style != prevStyle || (currentRubyPosition != RubyPart.None && section.RubyPart == RubyPart.None))
{
lineContent.AppendTag("r", style);
currentRubyPosition = RubyPart.None;
prevSection = (AssSection)prevSection.Clone();
ApplyStyle(prevSection, style);
}
AppendSectionTags(section, prevSection, lineContent);
if (section.RubyPart == RubyPart.Text)
{
RubyPart rubyPart;
if (i + 4 > line.Sections.Count || ((rubyPart = line.Sections[i + 2].RubyPart) != RubyPart.RubyAbove && rubyPart != RubyPart.RubyBelow))
{
throw new InvalidDataException("Invalid ruby sequence");
}
if (rubyPart != currentRubyPosition)
{
lineContent.AppendTag("ytruby", rubyPart == RubyPart.RubyAbove ? 8 : 2);
currentRubyPosition = rubyPart;
}
lineContent.AppendText($"[{section.Text}/{line.Sections[i + 2].Text}]");
i += 3;
}
else
{
lineContent.AppendText(section.Text);
}
prevSection = section;
prevStyle = style;
}
writer.WriteLine(lineContent);
}
internal void ApplyStyle(AssSection section, AssStyle style)
{
ApplyStyle(section, style, GetStyleOptions(style.Name));
}
public AssStyleOptions GetStyleOptions(AssStyle style)
{
return(GetStyleOptions(style.Name));
}
private List <AssLine> ParseLine(AssDialogue dialogue, AssStyle style, AssStyleOptions styleOptions)
{
DateTime startTime = TimeUtil.SnapTimeToFrame(dialogue.Start.AddMilliseconds(32));
DateTime endTime = TimeUtil.SnapTimeToFrame(dialogue.End).AddMilliseconds(32);
AssLine line = new AssLine(startTime, endTime)
{
AnchorPoint = style.AnchorPoint
};
AssTagContext context = new AssTagContext
{
Document = this,
Dialogue = dialogue,
InitialStyle = style,
InitialStyleOptions = styleOptions,
Style = style,
StyleOptions = styleOptions,
Line = line,
Section = new AssSection(null)
};
ApplyStyle(context.Section, style, styleOptions);
string text = Regex.Replace(dialogue.Text, @"(?:\\N)+$", "");
int start = 0;
foreach (Match match in Regex.Matches(text, @"\{(?:\\(?<tag>fn|\d?[a-z]+)(?<arg>\([^\{\}\(\)]*\)|[^\{\}\(\)\\]*))+\}"))
{
int end = match.Index;
if (end > start)
{
context.Section.Text = text.Substring(start, end - start).Replace("\\N", "\r\n");
line.Sections.Add(context.Section);
context.Section = (AssSection)context.Section.Clone();
context.Section.Text = null;
context.Section.Duration = TimeSpan.Zero;
}
CaptureCollection tags = match.Groups["tag"].Captures;
CaptureCollection arguments = match.Groups["arg"].Captures;
for (int i = 0; i < tags.Count; i++)
{
if (_tagHandlers.TryGetValue(tags[i].Value, out AssTagHandlerBase handler))
{
handler.Handle(context, arguments[i].Value);
}
}
start = match.Index + match.Length;
}
if (start < text.Length)
{
context.Section.Text = text.Substring(start, text.Length - start).Replace("\\N", "\r\n");
line.Sections.Add(context.Section);
}
if (line.RubyPosition != RubyPosition.None)
{
CreateRubySections(line);
}
List <AssLine> lines = new List <AssLine> {
line
};
foreach (AssTagContext.PostProcessor postProcessor in context.PostProcessors)
{
List <AssLine> extraLines = postProcessor();
if (extraLines != null)
{
lines.AddRange(extraLines);
}
}
return(lines);
}