SubtitleEdit/libse/SubtitleFormats/CaptionAssistant.cs

159 lines
5.8 KiB
C#

using System;
using System.Collections.Generic;
using System.Text;
using System.Xml;
namespace Nikse.SubtitleEdit.Core.SubtitleFormats
{
public class CaptionAssistant : SubtitleFormat
{
public override string Extension
{
get { return ".cac"; }
}
public override string Name
{
get { return "Caption Assistant"; }
}
public override bool IsTimeBased
{
get { return true; }
}
public override bool IsMine(List<string> lines, string fileName)
{
var subtitle = new Subtitle();
LoadSubtitle(subtitle, lines, fileName);
return subtitle.Paragraphs.Count > 0;
}
private static string ToTimeCode(TimeCode time)
{
return time.ToHHMMSSFF();
}
private static TimeCode DecodeTimeCode(string s)
{
var parts = s.Split(new[] { ':', ';' }, StringSplitOptions.RemoveEmptyEntries);
var hour = int.Parse(parts[0]);
var minutes = int.Parse(parts[1]);
var seconds = int.Parse(parts[2]);
var frames = int.Parse(parts[3]);
int milliseconds = (int)Math.Round(((TimeCode.BaseUnit / Configuration.Settings.General.CurrentFrameRate) * frames));
if (milliseconds > 999)
milliseconds = 999;
return new TimeCode(hour, minutes, seconds, milliseconds);
}
public override string ToText(Subtitle subtitle, string title)
{
string xmlStructure =
"<?xml version=\"1.0\" encoding=\"utf-8\" ?>" + Environment.NewLine +
"<CaptionAssistant><CaptionData></CaptionData></CaptionAssistant>";
var xml = new XmlDocument();
xml.LoadXml(xmlStructure);
xml.XmlResolver = null;
var cd = xml.DocumentElement.SelectSingleNode("CaptionData");
foreach (Paragraph p in subtitle.Paragraphs)
{
XmlNode paragraph = xml.CreateElement("CaptionDetail");
XmlAttribute start = xml.CreateAttribute("PositionIn");
start.InnerText = ToTimeCode(p.StartTime);
paragraph.Attributes.Append(start);
XmlAttribute end = xml.CreateAttribute("PositionOut");
end.InnerText = ToTimeCode(p.EndTime);
paragraph.Attributes.Append(end);
XmlAttribute text = xml.CreateAttribute("CaptionText");
text.InnerText = HtmlUtil.RemoveHtmlTags(p.Text, true);
paragraph.Attributes.Append(text);
XmlAttribute align = xml.CreateAttribute("Align");
if (p.Text.StartsWith("{\\an1}", StringComparison.Ordinal) || p.Text.StartsWith("{\\an4}", StringComparison.Ordinal) || p.Text.StartsWith("{\\an7}", StringComparison.Ordinal))
align.InnerText = "Left";
else if (p.Text.StartsWith("{\\an3}", StringComparison.Ordinal) || p.Text.StartsWith("{\\an6}", StringComparison.Ordinal) || p.Text.StartsWith("{\\an9}", StringComparison.Ordinal))
align.InnerText = "Right";
else
align.InnerText = "Center";
paragraph.Attributes.Append(align);
XmlAttribute captionType = xml.CreateAttribute("CaptionType");
captionType.InnerText = "608CC1";
paragraph.Attributes.Append(captionType);
cd.AppendChild(paragraph);
}
return ToUtf8XmlString(xml);
}
public override void LoadSubtitle(Subtitle subtitle, List<string> lines, string fileName)
{
_errorCount = 0;
var sb = new StringBuilder();
lines.ForEach(line => sb.AppendLine(line));
string allText = sb.ToString();
if (!allText.Contains("<CaptionAssistant>") || !allText.Contains("<CaptionData>"))
return;
var xml = new XmlDocument { XmlResolver = null };
try
{
xml.LoadXml(allText);
}
catch (Exception exception)
{
System.Diagnostics.Debug.WriteLine(exception.Message);
_errorCount = 1;
return;
}
if (xml.DocumentElement == null)
{
_errorCount = 1;
return;
}
foreach (XmlNode node in xml.DocumentElement.SelectNodes("CaptionData/CaptionDetail"))
{
try
{
if (node.Attributes != null)
{
string text = node.Attributes.GetNamedItem("CaptionText").InnerText.Trim();
if (node.Attributes.GetNamedItem("Align") != null)
{
string align = node.Attributes.GetNamedItem("Align").InnerText.Trim();
if (align.Equals("left", StringComparison.OrdinalIgnoreCase))
text = "{\\an1}" + text;
else if (align.Equals("right", StringComparison.OrdinalIgnoreCase))
text = "{\\an3}" + text;
}
string start = node.Attributes.GetNamedItem("PositionIn").InnerText;
string end = node.Attributes.GetNamedItem("PositionOut").InnerText;
subtitle.Paragraphs.Add(new Paragraph(DecodeTimeCode(start), DecodeTimeCode(end), text));
}
}
catch (Exception ex)
{
System.Diagnostics.Debug.WriteLine(ex.Message);
_errorCount++;
}
}
subtitle.Renumber();
}
}
}