SubtitleEdit/libse/SubtitleFormats/UleadSubtitleFormat.cs

139 lines
4.5 KiB
C#

using System;
using System.Collections.Generic;
using System.Text;
using System.Text.RegularExpressions;
namespace Nikse.SubtitleEdit.Core.SubtitleFormats
{
public class UleadSubtitleFormat : SubtitleFormat
{
private static readonly Regex regexTimeCodes = new Regex(@"^#\d+ \d\d;\d\d;\d\d;\d\d \d\d;\d\d;\d\d;\d\d", RegexOptions.Compiled);
public override string Extension
{
get { return ".txt"; }
}
public override string Name
{
get { return "Ulead subtitle format"; }
}
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 > _errorCount;
}
public override string ToText(Subtitle subtitle, string title)
{
const string Header = @"#Ulead subtitle format
#Subtitle stream attribute begin
#FR:25.00
#Subtitle stream attribute end
#Subtitle text begin";
const string Footer = @"#Subtitle text end
#Subtitle text attribute begin
#/R:1,{0} /FP:8 /FS:24
#Subtitle text attribute end";
var sb = new StringBuilder();
sb.AppendLine(Header);
int index = 0;
const string writeFormat = "#{0} {1} {2}";
foreach (Paragraph p in subtitle.Paragraphs)
{
//#3 00;04;26;04 00;04;27;05
//How much in there? -
//Three...
sb.AppendLine(string.Format(writeFormat, index, EncodeTimeCode(p.StartTime), EncodeTimeCode(p.EndTime)));
sb.AppendLine(HtmlUtil.RemoveHtmlTags(p.Text, true));
index++;
}
sb.AppendLine(string.Format(Footer, subtitle.Paragraphs.Count));
return sb.ToString();
}
private static string EncodeTimeCode(TimeCode time)
{
//00;04;27;05
int frames = time.Milliseconds / (1000 / 25);
return string.Format("{0:00};{1:00};{2:00};{3:00}", time.Hours, time.Minutes, time.Seconds, frames);
}
public override void LoadSubtitle(Subtitle subtitle, List<string> lines, string fileName)
{
//#3 00;04;26;04 00;04;27;05
//How much in there? -
//Three...
Paragraph p = null;
subtitle.Paragraphs.Clear();
_errorCount = 0;
char[] splitChar = { ' ' };
foreach (string l2 in lines)
{
string line = l2.TrimEnd('ഀ');
if (line.StartsWith('#') && regexTimeCodes.IsMatch(line))
{
string[] parts = line.Split(splitChar, StringSplitOptions.RemoveEmptyEntries);
if (parts.Length >= 3)
{
string start = parts[1];
string end = parts[2];
try
{
p = new Paragraph(DecodeTimeCode(start), DecodeTimeCode(end), string.Empty);
subtitle.Paragraphs.Add(p);
}
catch
{
_errorCount++;
}
}
}
else if (string.IsNullOrWhiteSpace(line) || line.StartsWith('#'))
{
// skip these lines
}
else if (p != null)
{
if (string.IsNullOrEmpty(p.Text))
p.Text = line.TrimEnd();
else
p.Text = p.Text + Environment.NewLine + line.TrimEnd();
}
else
{
_errorCount++;
}
}
subtitle.Renumber();
}
private static TimeCode DecodeTimeCode(string time)
{
//00;04;26;04
var hour = int.Parse(time.Substring(0, 2));
var minutes = int.Parse(time.Substring(3, 2));
var seconds = int.Parse(time.Substring(6, 2));
var frames = int.Parse(time.Substring(9, 2));
int milliseconds = (int)(1000 / 25.0 * frames);
if (milliseconds > 999)
milliseconds = 999;
return new TimeCode(hour, minutes, seconds, milliseconds);
}
}
}