mirror of
https://github.com/SubtitleEdit/subtitleedit.git
synced 2024-10-27 14:32:35 +01:00
429 lines
17 KiB
C#
429 lines
17 KiB
C#
using Nikse.SubtitleEdit.Core.Enums;
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using System;
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using System.Collections.Generic;
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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 DialogSplitMerge
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{
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public DialogType DialogStyle { get; set; }
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public ContinuationStyle ContinuationStyle { get; set; }
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public string TwoLetterLanguageCode { get; set; }
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public bool SkipLineEndingCheck { get; set; }
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private static char GetDashChar() => '-';
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private static char GetAlternateDashChar() => '‐'; // Unicode En Dash (\u2010)
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public string FixDashesAndSpaces(string input)
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{
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return FixSpaces(FixDashes(input));
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}
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public string FixSpaces(string input)
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{
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var lines = input.SplitToLines();
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if (!IsDialog(lines))
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{
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return input;
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}
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var sb = new StringBuilder();
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for (int i = 0; i < lines.Count; i++)
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{
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var l = lines[i];
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var pre = GetStartTags(l);
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l = l.Remove(0, pre.Length);
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switch (DialogStyle)
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{
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case DialogType.DashBothLinesWithSpace:
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if (l.TrimStart().StartsWith(GetDashChar()))
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{
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var rest = l.Remove(0, l.IndexOf(GetDashChar()) + 1);
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sb.AppendLine(pre + GetLineStartFromDashStyle(i) + rest.TrimStart());
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}
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else
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{
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sb.AppendLine(pre + l);
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}
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break;
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case DialogType.DashSecondLineWithSpace:
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if (i > 0 && l.TrimStart().StartsWith(GetDashChar()))
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{
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var rest = l.Remove(0, l.IndexOf(GetDashChar()) + 1);
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sb.AppendLine(pre + GetLineStartFromDashStyle(i) + rest.TrimStart());
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}
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else
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{
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sb.AppendLine(pre + l);
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}
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break;
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case DialogType.DashBothLinesWithoutSpace:
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if (l.TrimStart().StartsWith(GetDashChar()))
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{
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var rest = l.Remove(0, l.IndexOf(GetDashChar()) + 1);
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sb.AppendLine(pre + GetLineStartFromDashStyle(i) + rest.TrimStart());
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}
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else
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{
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sb.AppendLine(pre + l);
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}
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break;
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case DialogType.DashSecondLineWithoutSpace:
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if (i > 0 && l.TrimStart().StartsWith(GetDashChar()))
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{
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var rest = l.Remove(0, l.IndexOf(GetDashChar()) + 1);
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sb.AppendLine(pre + GetLineStartFromDashStyle(i) + rest.TrimStart());
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}
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else
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{
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sb.AppendLine(pre + l);
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}
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break;
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default:
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throw new ArgumentOutOfRangeException();
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}
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}
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return sb.ToString().TrimEnd();
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}
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public string AddSpaces(string input)
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{
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var lines = input.SplitToLines();
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if (!IsDialog(lines))
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{
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return input;
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}
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var sb = new StringBuilder();
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for (int i = 0; i < lines.Count; i++)
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{
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var l = lines[i];
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var pre = GetStartTags(l);
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l = l.Remove(0, pre.Length);
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switch (DialogStyle)
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{
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case DialogType.DashBothLinesWithSpace:
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if (l.TrimStart().StartsWith(GetDashChar()))
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{
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var rest = l.Remove(0, l.IndexOf(GetDashChar()) + 1);
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sb.AppendLine(pre + GetLineStartFromDashStyle(i) + rest.TrimStart());
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}
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else
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{
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sb.AppendLine(pre + l);
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}
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break;
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case DialogType.DashSecondLineWithSpace:
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if (i > 0 && l.TrimStart().StartsWith(GetDashChar()))
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{
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var rest = l.Remove(0, l.IndexOf(GetDashChar()) + 1);
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sb.AppendLine(pre + GetLineStartFromDashStyle(i) + rest.TrimStart());
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}
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else
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{
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sb.AppendLine(pre + l);
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}
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break;
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default:
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sb.AppendLine(pre + l);
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break;
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}
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}
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return sb.ToString().TrimEnd();
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}
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public string RemoveSpaces(string input)
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{
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var lines = input.SplitToLines();
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if (!IsDialog(lines))
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{
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return input;
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}
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var sb = new StringBuilder();
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for (int i = 0; i < lines.Count; i++)
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{
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var l = lines[i];
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var pre = GetStartTags(l);
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l = l.Remove(0, pre.Length);
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switch (DialogStyle)
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{
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case DialogType.DashBothLinesWithSpace:
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case DialogType.DashSecondLineWithSpace:
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sb.AppendLine(pre + l);
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break;
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case DialogType.DashBothLinesWithoutSpace:
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if (l.TrimStart().StartsWith(GetDashChar()))
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{
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var rest = l.Remove(0, l.IndexOf(GetDashChar()) + 1);
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sb.AppendLine(pre + GetLineStartFromDashStyle(i) + rest.TrimStart());
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}
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else
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{
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sb.AppendLine(pre + l);
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}
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break;
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case DialogType.DashSecondLineWithoutSpace:
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if (i > 0 && l.TrimStart().StartsWith(GetDashChar()))
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{
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var rest = l.Remove(0, l.IndexOf(GetDashChar()) + 1);
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sb.AppendLine(pre + GetLineStartFromDashStyle(i) + rest.TrimStart());
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}
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else
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{
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sb.AppendLine(pre + l);
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}
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break;
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default:
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throw new ArgumentOutOfRangeException();
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}
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}
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return sb.ToString().TrimEnd();
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}
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public string FixDashes(string input)
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{
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var lines = input.SplitToLines();
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if (!IsDialog(lines))
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{
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return input;
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}
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var isDialogThreeLinesTwoOne = lines.Count == 3 && IsDialogThreeLinesTwoOne(lines[0], lines[1], lines[2]);
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var isDialogThreeLinesOneTwo = lines.Count == 3 && IsDialogThreeLinesOneTwo(lines[0], lines[1], lines[2]);
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var sb = new StringBuilder();
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for (int i = 0; i < lines.Count; i++)
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{
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var l = lines[i];
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var pre = GetStartTags(l);
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l = l.Remove(0, pre.Length);
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switch (DialogStyle)
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{
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case DialogType.DashBothLinesWithSpace:
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if (isDialogThreeLinesTwoOne && i == 1 || isDialogThreeLinesOneTwo && i == 2)
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{
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sb.AppendLine(pre + l);
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}
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else if (!l.TrimStart().StartsWith(GetDashChar()))
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{
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sb.AppendLine(pre + GetLineStartFromDashStyle(i) + l.TrimStart().TrimStart(GetAlternateDashChar()));
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}
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else
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{
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sb.AppendLine(pre + l);
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}
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break;
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case DialogType.DashSecondLineWithSpace:
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if (i > 0 && !l.TrimStart().StartsWith(GetDashChar()))
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{
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if (isDialogThreeLinesTwoOne && i == 1 || isDialogThreeLinesOneTwo && i == 2)
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{
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sb.AppendLine(pre + l);
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}
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else
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{
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sb.AppendLine(pre + GetLineStartFromDashStyle(i) + l.TrimStart().TrimStart(GetAlternateDashChar()));
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}
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}
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else if (i == 0 && l.TrimStart().StartsWith(GetDashChar()))
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{
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sb.AppendLine(pre + GetLineStartFromDashStyle(i) + l.Remove(0, l.IndexOf(GetDashChar()) + 1).TrimStart());
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}
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else
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{
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sb.AppendLine(pre + l);
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}
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break;
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case DialogType.DashBothLinesWithoutSpace:
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if (isDialogThreeLinesTwoOne && i == 1 || isDialogThreeLinesOneTwo && i == 2)
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{
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sb.AppendLine(pre + l);
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}
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else if (!l.TrimStart().StartsWith(GetDashChar()))
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{
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sb.AppendLine(pre + GetLineStartFromDashStyle(i) + l.TrimStart().TrimStart(GetAlternateDashChar()));
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}
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else
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{
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sb.AppendLine(pre + l);
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}
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break;
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case DialogType.DashSecondLineWithoutSpace:
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if (i > 0 && !l.TrimStart().StartsWith(GetDashChar()))
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{
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if (isDialogThreeLinesTwoOne && i == 1 || isDialogThreeLinesOneTwo && i == 2)
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{
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sb.AppendLine(pre + l);
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}
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else
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{
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sb.AppendLine(pre + GetLineStartFromDashStyle(i) + l.TrimStart().TrimStart(GetAlternateDashChar()));
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}
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}
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else if (i == 0 && l.TrimStart().StartsWith(GetDashChar()))
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{
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sb.AppendLine(pre + GetLineStartFromDashStyle(i) + l.Remove(0, l.IndexOf(GetDashChar()) + 1).TrimStart().TrimStart(GetAlternateDashChar()));
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}
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else
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{
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sb.AppendLine(pre + l);
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}
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break;
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default:
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throw new ArgumentOutOfRangeException();
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}
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}
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return sb.ToString().TrimEnd();
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}
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public string InsertStartDash(string input, int lineIndex)
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{
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var pre = GetStartTags(input);
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var s = input.Remove(0, pre.Length);
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if (string.IsNullOrEmpty(s))
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{
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return input;
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}
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if (s.StartsWith(GetDashChar()))
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{
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s = s.TrimStart(GetDashChar());
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}
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return pre + GetLineStartFromDashStyle(lineIndex) + s.TrimStart();
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}
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public static string RemoveStartDash(string input)
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{
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var pre = GetStartTags(input);
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var s = input.Remove(0, pre.Length);
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if (!s.TrimStart().StartsWith(GetDashChar()) && !s.TrimStart().StartsWith(GetAlternateDashChar()))
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{
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return input;
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}
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return pre + s.TrimStart().TrimStart(GetDashChar(), GetAlternateDashChar()).TrimStart();
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}
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public static DialogType GetDialogStyleFromIndex(int index)
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{
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switch (index)
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{
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case 1:
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return DialogType.DashBothLinesWithoutSpace;
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case 2:
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return DialogType.DashSecondLineWithSpace;
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case 3:
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return DialogType.DashSecondLineWithoutSpace;
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default:
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return DialogType.DashBothLinesWithSpace;
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}
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}
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private static string GetStartTags(string input)
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{
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var pre = new StringBuilder();
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var s = input;
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if (s.StartsWith("{\\") && s.Contains('}'))
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{
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pre.Append(s.Substring(0, s.IndexOf('}') + 1));
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s = s.Remove(0, pre.Length);
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}
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while (s.StartsWith("<") && s.Contains('>'))
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{
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var htmlPre = s.Substring(0, s.IndexOf('>') + 1);
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s = s.Remove(0, htmlPre.Length);
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pre.Append(htmlPre);
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}
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return pre.ToString();
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}
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public bool IsDialog(List<string> lines)
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{
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if (lines.Count < 2 || lines.Count > 3)
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{
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return false;
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}
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var l0 = HtmlUtil.RemoveHtmlTags(lines[0]);
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var l1 = HtmlUtil.RemoveHtmlTags(lines[1], true);
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var noLineEnding = SkipLineEndingCheck || LanguageAutoDetect.IsLanguageWithoutPeriods(TwoLetterLanguageCode);
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if (lines.Count == 2 && (l0.HasSentenceEnding(TwoLetterLanguageCode) || noLineEnding) && (l1.TrimStart().StartsWith(GetDashChar()) || l1.TrimStart().StartsWith(GetAlternateDashChar())))
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{
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return true;
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}
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if (lines.Count == 3)
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{
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var l2 = HtmlUtil.RemoveHtmlTags(lines[2], true);
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// - I'm fine today, but I would have
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// been better if I had a some candy.
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// - How are you?
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if (IsDialogThreeLinesTwoOne(l0, l1, l2))
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{
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return true;
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}
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// - How are you?
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// - I'm fine today, but I would have
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// been better if I had a some candy.
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if (IsDialogThreeLinesOneTwo(l0, l1, l2))
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{
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return true;
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}
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if ((l0.HasSentenceEnding(TwoLetterLanguageCode) || noLineEnding) &&
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(l1.TrimStart().StartsWith(GetDashChar()) || l1.TrimStart().StartsWith(GetAlternateDashChar())) &&
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(l1.HasSentenceEnding(TwoLetterLanguageCode) || noLineEnding) &&
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(l2.TrimStart().StartsWith(GetDashChar()) || l2.TrimStart().StartsWith(GetAlternateDashChar())))
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{
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return true;
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}
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}
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return false;
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}
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private bool IsDialogThreeLinesOneTwo(string l0, string l1, string l2)
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{
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return l0.HasSentenceEnding(TwoLetterLanguageCode) &&
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(l1.TrimStart().StartsWith(GetDashChar()) || l1.TrimStart().StartsWith(GetAlternateDashChar())) &&
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!l1.HasSentenceEnding(TwoLetterLanguageCode) &&
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!(l2.TrimStart().StartsWith(GetDashChar()) || l2.TrimStart().StartsWith(GetAlternateDashChar()));
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}
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private bool IsDialogThreeLinesTwoOne(string l0, string l1, string l2)
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{
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return !l0.HasSentenceEnding(TwoLetterLanguageCode) &&
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l1.HasSentenceEnding(TwoLetterLanguageCode) &&
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!(l1.TrimStart().StartsWith(GetDashChar()) || l1.TrimStart().StartsWith(GetAlternateDashChar())) &&
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(l2.TrimStart().StartsWith(GetDashChar())) || l2.TrimStart().StartsWith(GetAlternateDashChar());
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}
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private string GetLineStartFromDashStyle(int lineIndex)
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{
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switch (DialogStyle)
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{
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case DialogType.DashBothLinesWithSpace:
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return GetDashChar() + " ";
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case DialogType.DashBothLinesWithoutSpace:
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return GetDashChar().ToString();
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case DialogType.DashSecondLineWithSpace:
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return lineIndex == 0 ? string.Empty : GetDashChar() + " ";
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case DialogType.DashSecondLineWithoutSpace:
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return lineIndex == 0 ? string.Empty : GetDashChar().ToString();
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default:
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return string.Empty;
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}
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}
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}
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}
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