mirror of
https://github.com/SubtitleEdit/subtitleedit.git
synced 2024-11-22 11:12:36 +01:00
600 lines
23 KiB
C#
600 lines
23 KiB
C#
using Nikse.SubtitleEdit.Core.Enums;
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using Nikse.SubtitleEdit.Core.SubtitleFormats;
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using System;
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using System.Collections.Generic;
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using System.IO;
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using System.Linq;
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using System.Text;
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namespace Nikse.SubtitleEdit.Core
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{
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public class Subtitle
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{
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private List<Paragraph> _paragraphs;
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private readonly List<HistoryItem> _history;
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private SubtitleFormat _format;
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private bool _wasLoadedWithFrameNumbers;
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public string Header { get; set; }
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public string Footer { get; set; }
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public string FileName { get; set; }
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public const int MaximumHistoryItems = 100;
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public SubtitleFormat OriginalFormat
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{
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get
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{
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return _format;
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}
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}
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public List<HistoryItem> HistoryItems
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{
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get { return _history; }
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}
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public Subtitle()
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{
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_paragraphs = new List<Paragraph>();
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_history = new List<HistoryItem>();
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FileName = "Untitled";
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}
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public Subtitle(List<HistoryItem> historyItems)
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: this()
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{
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_history = historyItems;
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}
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/// <summary>
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/// Copy constructor (only paragraphs)
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/// </summary>
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/// <param name="subtitle">Subtitle to copy</param>
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/// <param name="generateNewId">Generate new ID (guid) for paragraphs</param>
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public Subtitle(Subtitle subtitle, bool generateNewId = true)
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: this()
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{
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if (subtitle == null)
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return;
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foreach (Paragraph p in subtitle.Paragraphs)
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{
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_paragraphs.Add(new Paragraph(p, generateNewId));
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}
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_wasLoadedWithFrameNumbers = subtitle.WasLoadedWithFrameNumbers;
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Header = subtitle.Header;
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Footer = subtitle.Footer;
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FileName = subtitle.FileName;
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}
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public List<Paragraph> Paragraphs
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{
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get
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{
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return _paragraphs;
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}
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}
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/// <summary>
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/// Get the paragraph of index, null if out of bounds
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/// </summary>
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/// <param name="index">Index of wanted paragraph</param>
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/// <returns>Paragraph, null if index is index is out of bounds</returns>
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public Paragraph GetParagraphOrDefault(int index)
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{
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if (_paragraphs == null || _paragraphs.Count <= index || index < 0)
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return null;
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return _paragraphs[index];
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}
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public Paragraph GetParagraphOrDefaultById(string id)
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{
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return _paragraphs.FirstOrDefault(p => p.ID == id);
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}
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public SubtitleFormat ReloadLoadSubtitle(List<string> lines, string fileName, SubtitleFormat format)
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{
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Paragraphs.Clear();
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if (format != null && format.IsMine(lines, fileName))
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{
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format.LoadSubtitle(this, lines, fileName);
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_format = format;
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return format;
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}
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foreach (SubtitleFormat subtitleFormat in SubtitleFormat.AllSubtitleFormats)
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{
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if (subtitleFormat.IsMine(lines, fileName))
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{
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subtitleFormat.LoadSubtitle(this, lines, fileName);
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_format = subtitleFormat;
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return subtitleFormat;
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}
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}
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return null;
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}
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public SubtitleFormat LoadSubtitle(string fileName, out Encoding encoding, Encoding useThisEncoding)
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{
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return LoadSubtitle(fileName, out encoding, useThisEncoding, false);
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}
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public SubtitleFormat LoadSubtitle(string fileName, out Encoding encoding, Encoding useThisEncoding, bool batchMode, double? sourceFrameRate = null)
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{
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FileName = fileName;
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_paragraphs = new List<Paragraph>();
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StreamReader sr;
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if (useThisEncoding != null)
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{
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try
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{
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sr = new StreamReader(fileName, useThisEncoding);
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}
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catch (Exception exception)
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{
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System.Diagnostics.Debug.WriteLine(exception.Message);
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encoding = Encoding.UTF8;
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return null;
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}
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}
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else
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{
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try
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{
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sr = new StreamReader(fileName, LanguageAutoDetect.GetEncodingFromFile(fileName), true);
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}
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catch
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{
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try
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{
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Stream fs = new FileStream(fileName, FileMode.Open, FileAccess.Read, FileShare.ReadWrite);
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sr = new StreamReader(fs);
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}
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catch (Exception exception)
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{
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System.Diagnostics.Debug.WriteLine(exception.Message);
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encoding = Encoding.UTF8;
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return null;
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}
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}
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}
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encoding = sr.CurrentEncoding;
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var lines = sr.ReadToEnd().SplitToLines().ToList();
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sr.Close();
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foreach (SubtitleFormat subtitleFormat in SubtitleFormat.AllSubtitleFormats)
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{
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if (subtitleFormat.IsMine(lines, fileName))
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{
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Header = null;
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subtitleFormat.BatchMode = batchMode;
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subtitleFormat.BatchSourceFrameRate = sourceFrameRate;
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subtitleFormat.LoadSubtitle(this, lines, fileName);
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_format = subtitleFormat;
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_wasLoadedWithFrameNumbers = _format.IsFrameBased;
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if (_wasLoadedWithFrameNumbers)
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CalculateTimeCodesFromFrameNumbers(Configuration.Settings.General.CurrentFrameRate);
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return subtitleFormat;
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}
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}
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if (useThisEncoding == null)
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return LoadSubtitle(fileName, out encoding, Encoding.Unicode);
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return null;
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}
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public void MakeHistoryForUndo(string description, SubtitleFormat subtitleFormat, DateTime fileModified, Subtitle original, string originalSubtitleFileName, int lineNumber, int linePosition, int linePositionAlternate)
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{
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// don't fill memory with history - use a max rollback points
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if (_history.Count > MaximumHistoryItems)
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_history.RemoveAt(0);
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_history.Add(new HistoryItem(_history.Count, this, description, FileName, fileModified, subtitleFormat.FriendlyName, original, originalSubtitleFileName, lineNumber, linePosition, linePositionAlternate));
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}
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public bool CanUndo
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{
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get
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{
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return _history.Count > 0;
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}
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}
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public string UndoHistory(int index, out string subtitleFormatFriendlyName, out DateTime fileModified, out Subtitle originalSubtitle, out string originalSubtitleFileName)
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{
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_paragraphs.Clear();
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foreach (Paragraph p in _history[index].Subtitle.Paragraphs)
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_paragraphs.Add(new Paragraph(p));
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subtitleFormatFriendlyName = _history[index].SubtitleFormatFriendlyName;
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FileName = _history[index].FileName;
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fileModified = _history[index].FileModified;
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originalSubtitle = new Subtitle(_history[index].OriginalSubtitle);
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originalSubtitleFileName = _history[index].OriginalSubtitleFileName;
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return FileName;
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}
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/// <summary>
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/// Creates subtitle as text in it'snative format
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/// </summary>
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/// <param name="format">Format to output</param>
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/// <returns>Native format as text string</returns>
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public string ToText(SubtitleFormat format)
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{
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return format.ToText(this, Path.GetFileNameWithoutExtension(FileName));
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}
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public void AddTimeToAllParagraphs(TimeSpan time)
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{
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foreach (Paragraph p in Paragraphs)
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{
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p.StartTime.AddTime(time);
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p.EndTime.AddTime(time);
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}
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}
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/// <summary>
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/// Calculate the time codes from frame number/frame rate
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/// </summary>
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/// <param name="frameRate">Number of frames per second</param>
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/// <returns>True if times could be calculated</returns>
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public bool CalculateTimeCodesFromFrameNumbers(double frameRate)
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{
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if (_format == null || _format.IsTimeBased)
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return false;
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foreach (Paragraph p in Paragraphs)
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{
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p.CalculateTimeCodesFromFrameNumbers(frameRate);
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}
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return true;
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}
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/// <summary>
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/// Calculate the frame numbers from time codes/frame rate
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/// </summary>
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/// <param name="frameRate"></param>
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/// <returns></returns>
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public bool CalculateFrameNumbersFromTimeCodes(double frameRate)
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{
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if (_format == null || _format.IsFrameBased)
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return false;
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foreach (Paragraph p in Paragraphs)
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{
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p.CalculateFrameNumbersFromTimeCodes(frameRate);
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}
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FixEqualOrJustOverlappingFrameNumbers();
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return true;
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}
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public void CalculateFrameNumbersFromTimeCodesNoCheck(double frameRate)
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{
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foreach (Paragraph p in Paragraphs)
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p.CalculateFrameNumbersFromTimeCodes(frameRate);
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FixEqualOrJustOverlappingFrameNumbers();
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}
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private void FixEqualOrJustOverlappingFrameNumbers()
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{
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for (int i = 0; i < Paragraphs.Count - 1; i++)
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{
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Paragraph p = Paragraphs[i];
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Paragraph next = GetParagraphOrDefault(i + 1);
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if (next != null && (p.EndFrame == next.StartFrame || p.EndFrame == next.StartFrame + 1))
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p.EndFrame = next.StartFrame - 1;
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}
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}
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public void ChangeFrameRate(double oldFrameRate, double newFrameRate)
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{
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foreach (Paragraph p in Paragraphs)
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{
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p.StartTime.TotalMilliseconds = (p.StartTime.TotalMilliseconds * oldFrameRate / newFrameRate);
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p.EndTime.TotalMilliseconds = (p.EndTime.TotalMilliseconds * oldFrameRate / newFrameRate);
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p.CalculateFrameNumbersFromTimeCodes(newFrameRate);
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}
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}
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public bool WasLoadedWithFrameNumbers
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{
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get
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{
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return _wasLoadedWithFrameNumbers;
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}
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set
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{
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_wasLoadedWithFrameNumbers = value;
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}
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}
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public void AdjustDisplayTimeUsingPercent(double percent, List<int> selectedIndexes)
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{
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for (int i = 0; i < _paragraphs.Count; i++)
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{
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if (selectedIndexes == null || selectedIndexes.Contains(i))
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{
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double nextStartMilliseconds = double.MaxValue;
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if (i + 1 < _paragraphs.Count)
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nextStartMilliseconds = _paragraphs[i + 1].StartTime.TotalMilliseconds;
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double newEndMilliseconds = _paragraphs[i].EndTime.TotalMilliseconds;
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newEndMilliseconds = _paragraphs[i].StartTime.TotalMilliseconds + (((newEndMilliseconds - _paragraphs[i].StartTime.TotalMilliseconds) * percent) / 100);
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if (newEndMilliseconds > nextStartMilliseconds)
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newEndMilliseconds = nextStartMilliseconds - 1;
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_paragraphs[i].EndTime.TotalMilliseconds = newEndMilliseconds;
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}
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}
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}
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public void AdjustDisplayTimeUsingSeconds(double seconds, List<int> selectedIndexes)
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{
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for (int i = 0; i < _paragraphs.Count; i++)
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{
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if (selectedIndexes == null || selectedIndexes.Contains(i))
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{
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double nextStartMilliseconds = double.MaxValue;
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if (i + 1 < _paragraphs.Count)
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nextStartMilliseconds = _paragraphs[i + 1].StartTime.TotalMilliseconds;
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double newEndMilliseconds = _paragraphs[i].EndTime.TotalMilliseconds + (seconds * TimeCode.BaseUnit);
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if (newEndMilliseconds > nextStartMilliseconds)
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newEndMilliseconds = nextStartMilliseconds - 1;
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if (seconds < 0)
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{
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if (_paragraphs[i].StartTime.TotalMilliseconds + 100 > newEndMilliseconds)
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_paragraphs[i].EndTime.TotalMilliseconds = _paragraphs[i].StartTime.TotalMilliseconds + 100;
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else
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_paragraphs[i].EndTime.TotalMilliseconds = newEndMilliseconds;
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}
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else
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{
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_paragraphs[i].EndTime.TotalMilliseconds = newEndMilliseconds;
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}
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}
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}
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}
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public void RecalculateDisplayTimes(double maxCharactersPerSecond, List<int> selectedIndexes)
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{
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for (int i = 0; i < _paragraphs.Count; i++)
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{
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if (selectedIndexes == null || selectedIndexes.Contains(i))
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{
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Paragraph p = _paragraphs[i];
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double duration = Utilities.GetOptimalDisplayMilliseconds(p.Text);
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p.EndTime.TotalMilliseconds = p.StartTime.TotalMilliseconds + duration;
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while (Utilities.GetCharactersPerSecond(p) > maxCharactersPerSecond)
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{
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duration++;
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p.EndTime.TotalMilliseconds = p.StartTime.TotalMilliseconds + duration;
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}
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Paragraph next = GetParagraphOrDefault(i + 1);
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if (next != null && p.StartTime.TotalMilliseconds + duration + Configuration.Settings.General.MinimumMillisecondsBetweenLines > next.StartTime.TotalMilliseconds)
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{
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p.EndTime.TotalMilliseconds = next.StartTime.TotalMilliseconds - Configuration.Settings.General.MinimumMillisecondsBetweenLines;
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if (p.Duration.TotalMilliseconds <= 0)
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p.EndTime.TotalMilliseconds = p.StartTime.TotalMilliseconds + 1;
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}
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}
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}
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}
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public void Renumber(int startNumber = 1)
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{
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foreach (Paragraph p in _paragraphs)
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{
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p.Number = startNumber++;
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}
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}
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public int GetIndex(Paragraph p)
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{
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if (p == null)
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return -1;
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int index = _paragraphs.IndexOf(p);
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if (index >= 0)
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return index;
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for (int i = 0; i < _paragraphs.Count; i++)
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{
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if (p.ID == _paragraphs[i].ID)
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return i;
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if (i < _paragraphs.Count - 1 && p.ID == _paragraphs[i + 1].ID)
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return i + 1;
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if (Math.Abs(p.StartTime.TotalMilliseconds - _paragraphs[i].StartTime.TotalMilliseconds) < 0.1 &&
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Math.Abs(p.EndTime.TotalMilliseconds - _paragraphs[i].EndTime.TotalMilliseconds) < 0.1)
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return i;
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if (p.Number == _paragraphs[i].Number && (Math.Abs(p.StartTime.TotalMilliseconds - _paragraphs[i].StartTime.TotalMilliseconds) < 0.1 ||
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Math.Abs(p.EndTime.TotalMilliseconds - _paragraphs[i].EndTime.TotalMilliseconds) < 0.1))
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return i;
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if (p.Text == _paragraphs[i].Text && (Math.Abs(p.StartTime.TotalMilliseconds - _paragraphs[i].StartTime.TotalMilliseconds) < 0.1 ||
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Math.Abs(p.EndTime.TotalMilliseconds - _paragraphs[i].EndTime.TotalMilliseconds) < 0.1))
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return i;
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}
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return -1;
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}
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/// <summary>
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/// Get paragraph index by time in seconds
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/// </summary>
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public int GetIndex(double seconds)
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{
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var totalMilliseconds = seconds * TimeCode.BaseUnit;
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for (int i = 0; i < Paragraphs.Count; i++)
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{
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var p = Paragraphs[i];
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if (totalMilliseconds >= p.StartTime.TotalMilliseconds && totalMilliseconds <= p.EndTime.TotalMilliseconds)
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{
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return i;
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}
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}
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return -1;
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}
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public Paragraph GetFirstAlike(Paragraph p)
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{
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foreach (Paragraph item in _paragraphs)
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{
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if (Math.Abs(p.StartTime.TotalMilliseconds - item.StartTime.TotalMilliseconds) < 0.1 &&
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Math.Abs(p.EndTime.TotalMilliseconds - item.EndTime.TotalMilliseconds) < 0.1 &&
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p.Text == item.Text)
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return item;
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}
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return null;
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}
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public int RemoveEmptyLines()
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{
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int count = _paragraphs.Count;
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if (count > 0)
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{
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int firstNumber = _paragraphs[0].Number;
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for (int i = _paragraphs.Count - 1; i >= 0; i--)
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{
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Paragraph p = _paragraphs[i];
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if (string.IsNullOrWhiteSpace(p.Text))
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_paragraphs.RemoveAt(i);
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}
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if (count != _paragraphs.Count)
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Renumber(firstNumber);
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}
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return count - _paragraphs.Count;
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}
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/// <summary>
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/// Removes paragrahs by a list of indices
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/// </summary>
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/// <param name="indices">Indices of pargraphs/lines to delete</param>
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/// <returns>Number of lines deleted</returns>
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public int RemoveParagraphsByIndices(IEnumerable<int> indices)
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{
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int count = 0;
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foreach (var index in indices.OrderByDescending(p => p))
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{
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if (index >= 0 && index < _paragraphs.Count)
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{
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_paragraphs.RemoveAt(index);
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count++;
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}
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}
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return count;
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}
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/// <summary>
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/// Removes paragrahs by a list of IDs
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/// </summary>
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/// <param name="ids">IDs of pargraphs/lines to delete</param>
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/// <returns>Number of lines deleted</returns>
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public int RemoveParagraphsByIds(IEnumerable<string> ids)
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{
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int beforeCount = _paragraphs.Count;
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_paragraphs = _paragraphs.Where(p => !ids.Contains(p.ID)).ToList();
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return beforeCount - _paragraphs.Count;
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}
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/// <summary>
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/// Sort subtitle paragraphs
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/// </summary>
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/// <param name="sortCriteria">Paragraph sort criteria</param>
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public void Sort(SubtitleSortCriteria sortCriteria)
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{
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switch (sortCriteria)
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{
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case SubtitleSortCriteria.Number:
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_paragraphs.Sort((p1, p2) => p1.Number.CompareTo(p2.Number));
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break;
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case SubtitleSortCriteria.StartTime:
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_paragraphs.Sort((p1, p2) => p1.StartTime.TotalMilliseconds.CompareTo(p2.StartTime.TotalMilliseconds));
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break;
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case SubtitleSortCriteria.EndTime:
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_paragraphs.Sort((p1, p2) => p1.EndTime.TotalMilliseconds.CompareTo(p2.EndTime.TotalMilliseconds));
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break;
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case SubtitleSortCriteria.Duration:
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_paragraphs.Sort((p1, p2) => p1.Duration.TotalMilliseconds.CompareTo(p2.Duration.TotalMilliseconds));
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break;
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case SubtitleSortCriteria.Text:
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_paragraphs.Sort((p1, p2) => string.Compare(p1.Text, p2.Text, StringComparison.Ordinal));
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break;
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case SubtitleSortCriteria.TextMaxLineLength:
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_paragraphs.Sort((p1, p2) => Utilities.GetMaxLineLength(p1.Text).CompareTo(Utilities.GetMaxLineLength(p2.Text)));
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break;
|
|
case SubtitleSortCriteria.TextTotalLength:
|
|
_paragraphs.Sort((p1, p2) => p1.Text.Length.CompareTo(p2.Text.Length));
|
|
break;
|
|
case SubtitleSortCriteria.TextNumberOfLines:
|
|
_paragraphs.Sort((p1, p2) => p1.NumberOfLines.CompareTo(p2.NumberOfLines));
|
|
break;
|
|
case SubtitleSortCriteria.TextCharactersPerSeconds:
|
|
_paragraphs.Sort((p1, p2) => Utilities.GetCharactersPerSecond(p1).CompareTo(Utilities.GetCharactersPerSecond(p2)));
|
|
break;
|
|
case SubtitleSortCriteria.WordsPerMinute:
|
|
_paragraphs.Sort((p1, p2) => p1.WordsPerMinute.CompareTo(p2.WordsPerMinute));
|
|
break;
|
|
case SubtitleSortCriteria.Style:
|
|
_paragraphs.Sort((p1, p2) => string.Compare(p1.Extra, p2.Extra, StringComparison.Ordinal));
|
|
break;
|
|
}
|
|
}
|
|
|
|
public void InsertParagraphInCorrectTimeOrder(Paragraph newParagraph)
|
|
{
|
|
for (int i = 0; i < Paragraphs.Count; i++)
|
|
{
|
|
Paragraph p = Paragraphs[i];
|
|
if (newParagraph.StartTime.TotalMilliseconds < p.StartTime.TotalMilliseconds)
|
|
{
|
|
Paragraphs.Insert(i, newParagraph);
|
|
return;
|
|
}
|
|
}
|
|
Paragraphs.Add(newParagraph);
|
|
}
|
|
|
|
/// <summary>
|
|
/// Fast hash code for subtitle (only includes start + end + text)
|
|
/// </summary>
|
|
/// <returns>Hash value that can be used for quick compare</returns>
|
|
public string GetFastHashCode()
|
|
{
|
|
var sb = new StringBuilder(Paragraphs.Count * 50);
|
|
if (Header != null)
|
|
sb.Append(Header.Trim());
|
|
for (int i = 0; i < Paragraphs.Count; i++)
|
|
{
|
|
var p = Paragraphs[i];
|
|
sb.Append(p.StartTime.TotalMilliseconds.GetHashCode());
|
|
sb.Append(p.EndTime.TotalMilliseconds.GetHashCode());
|
|
sb.Append(p.Text);
|
|
}
|
|
return sb.ToString().TrimEnd();
|
|
}
|
|
|
|
/// <summary>
|
|
/// Concatenates all the Paragraph its Text property from Paragraphs, using the default line terminator between each Text.
|
|
/// </summary>
|
|
/// <returns>Contatenated Text property of all Paragraph present in Paragraphs property.</returns>
|
|
public string GetAllTexts()
|
|
{
|
|
var sb = new StringBuilder();
|
|
foreach (Paragraph p in Paragraphs)
|
|
{
|
|
sb.AppendLine(p.Text);
|
|
}
|
|
return sb.ToString();
|
|
}
|
|
}
|
|
}
|