mirror of
https://github.com/SubtitleEdit/subtitleedit.git
synced 2024-10-27 14:32:35 +01:00
284 lines
11 KiB
C#
284 lines
11 KiB
C#
using System;
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using System.Collections.Generic;
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using System.Globalization;
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using System.Linq;
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using System.Text;
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using Nikse.SubtitleEdit.Core.Dictionaries;
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namespace Nikse.SubtitleEdit.Core
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{
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public class FixCasing
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{
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public bool FixNormal = true;
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public bool FixNormalOnlyAllUppercase = false;
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public bool FixMakeLowercase = false;
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public bool FixMakeUppercase = false;
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private readonly string _language;
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private readonly List<string> _names;
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public FixCasing(string language)
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{
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_language = language;
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var nameList = new NameList(Configuration.DictionariesDirectory, language, Configuration.Settings.WordLists.UseOnlineNames, Configuration.Settings.WordLists.NamesUrl);
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_names = nameList.GetAllNames();
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// Longer names must be first
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_names.Sort((s1, s2) => s2.Length.CompareTo(s1.Length));
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}
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public int NoOfLinesChanged { get; set; }
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public void Fix(Subtitle subtitle)
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{
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var subCulture = GetCultureInfoFromLanguage(_language);
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Paragraph last = null;
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foreach (Paragraph p in subtitle.Paragraphs)
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{
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if (last != null)
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{
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p.Text = Fix(p.Text, last.Text, _names, subCulture, p.StartTime.TotalMilliseconds - last.EndTime.TotalMilliseconds);
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}
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else
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{
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p.Text = Fix(p.Text, string.Empty, _names, subCulture, 10000);
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}
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// fix casing of English alone i to I
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if (FixNormal && _language.StartsWith("en", StringComparison.Ordinal))
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{
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p.Text = FixEnglishAloneILowerToUpper(p.Text);
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p.Text = FixCasingAfterTitles(p.Text);
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}
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if (FixNormal)
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{
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p.Text = FixStutter(p.Text);
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}
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last = p;
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}
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}
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private static CultureInfo GetCultureInfoFromLanguage(string language)
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{
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try
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{
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return CultureInfo.GetCultureInfo(language);
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}
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catch
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{
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return CultureInfo.CurrentUICulture;
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}
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}
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private static string FixEnglishAloneILowerToUpper(string input)
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{
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const string pre = " >¡¿♪♫([";
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const string post = " <!?.:;,♪♫)]";
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var text = input;
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if (text.StartsWith("I-i ", StringComparison.Ordinal))
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{
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text = text.Remove(0, 3).Insert(0, "I-I");
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}
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text = text.Replace(" i-i ", " I-I ");
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if (text.StartsWith("I-i-i ", StringComparison.Ordinal))
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{
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text = text.Remove(0, 5).Insert(0, "I-I-I");
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}
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text = text.Replace(" i-i-i ", " I-I-I ");
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if (text.StartsWith("I-if ", StringComparison.Ordinal))
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{
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text = text.Remove(0, 4).Insert(0, "I-If ");
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}
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for (var indexOfI = text.IndexOf('i'); indexOfI >= 0; indexOfI = text.IndexOf('i', indexOfI + 1))
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{
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if (indexOfI == 0 || pre.Contains(text[indexOfI - 1]))
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{
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if (text.Substring(indexOfI).StartsWith("i-i ", StringComparison.Ordinal))
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{
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text = text.Remove(indexOfI, 3).Insert(indexOfI, "I-I");
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}
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else if (text.Substring(indexOfI).StartsWith("i-if ", StringComparison.Ordinal))
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{
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text = text.Remove(indexOfI, 4).Insert(indexOfI, "I-If");
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}
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else if (indexOfI + 1 == text.Length || post.Contains(text[indexOfI + 1]))
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{
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text = text.Remove(indexOfI, 1).Insert(indexOfI, "I");
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}
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else if (indexOfI > 1 && indexOfI < text.Length - 2 && "\r\n".Contains(text[indexOfI + 1]) && text[indexOfI - 1] == ' ')
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{
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text = text.Remove(indexOfI, 1).Insert(indexOfI, "I");
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}
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}
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if (indexOfI > 1 && indexOfI < text.Length - 2 && "\r\n".Contains(text[indexOfI - 1]) && " .?!".Contains(text[indexOfI + 1]))
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{
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text = text.Remove(indexOfI, 1).Insert(indexOfI, "I");
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}
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else if (indexOfI > 1 && "\r\n ".Contains(text[indexOfI - 1]) && text.Substring(indexOfI).StartsWith("i-i ", StringComparison.Ordinal))
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{
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text = text.Remove(indexOfI, 3).Insert(indexOfI, "I-I");
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}
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else if (indexOfI >= 1 && indexOfI < text.Length - 2 && "“\"".Contains(text[indexOfI - 1]) && " .?!".Contains(text[indexOfI + 1]))
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{
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text = text.Remove(indexOfI, 1).Insert(indexOfI, "I");
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}
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else if (indexOfI > 2 && text.Substring(indexOfI - 2).StartsWith("I-i ", StringComparison.Ordinal))
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{
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text = text.Remove(indexOfI - 2, 3).Insert(indexOfI - 2, "I-I");
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}
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else if (indexOfI > 2 && text.Substring(indexOfI - 2).StartsWith("I-it's ", StringComparison.Ordinal))
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{
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text = text.Remove(indexOfI - 2, 3).Insert(indexOfI - 2, "I-I");
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}
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else if (text.Substring(indexOfI).StartsWith("i'll ", StringComparison.Ordinal))
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{
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text = text.Remove(indexOfI, 1).Insert(indexOfI, "I");
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}
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else if (text.Substring(indexOfI).StartsWith("i've ", StringComparison.Ordinal))
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{
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text = text.Remove(indexOfI, 1).Insert(indexOfI, "I");
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}
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else if (text.Substring(indexOfI).StartsWith("i'm ", StringComparison.Ordinal))
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{
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text = text.Remove(indexOfI, 1).Insert(indexOfI, "I");
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}
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else if (text.Substring(indexOfI).StartsWith("i'd ", StringComparison.Ordinal))
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{
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text = text.Remove(indexOfI, 1).Insert(indexOfI, "I");
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}
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}
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return text;
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}
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private string FixCasingAfterTitles(string input)
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{
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var text = input;
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var titles = new[] { "Mrs.", "Miss.", "Mr.", "Ms.", "Dr." };
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var notChangeWords = new[] { "does", "has", "will", "is", "and", "for", "but", "or", "of" };
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for (int i = 0; i < text.Length - 4; i++)
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{
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var start = text.Substring(i);
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foreach (var title in titles)
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{
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if (start.StartsWith(title, StringComparison.OrdinalIgnoreCase))
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{
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var idx = i + title.Length;
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if (idx < text.Length - 2 && text[idx] == ' ')
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{
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idx++;
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var words = text.Substring(idx).Split(' ', '\r', '\n', ',', '"', '?', '!', '.', '\'');
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if (words.Length > 0 && !notChangeWords.Contains(words[0]))
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{
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var upper = text[idx].ToString().ToUpperInvariant();
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text = text.Remove(idx, 1).Insert(idx, upper);
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}
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}
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break;
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}
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}
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}
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return text;
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}
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public static string FixStutter(string text)
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{
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if (!text.Contains("-"))
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{
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return text;
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}
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var sb = new StringBuilder(text.Length);
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bool firstLetter = true;
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bool tagOn = false;
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var index = 0;
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while (index < text.Length)
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{
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var ch = text[index];
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if (ch == '<' || ch == '{')
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{
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tagOn = true;
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}
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else if (ch == '<' || ch == '}')
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{
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tagOn = false;
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}
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else if (ch == '.' || ch == '!' || ch == '?')
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{
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firstLetter = true;
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}
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else if (!tagOn && char.IsLetter(ch))
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{
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if (firstLetter && index < text.Length - 6 && char.IsUpper(text[index]) &&
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text[index + 1] == '-' && char.IsLower(text[index + 2]) && text[index] == char.ToUpperInvariant(text[index + 2]) &&
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text[index + 3] == '-' && char.IsLower(text[index + 4]) && text[index] == char.ToUpperInvariant(text[index + 4]) &&
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text[index + 5] != '-')
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{
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sb.Append(text[index]);
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sb.Append('-');
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sb.Append(text[index]);
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sb.Append('-');
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index += 4;
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}
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else if (firstLetter && index < text.Length - 4 && char.IsUpper(text[index]) &&
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text[index + 1] == '-' && char.IsLower(text[index + 2]) && text[index] == char.ToUpperInvariant(text[index + 2]) &&
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text[index + 3] != '-')
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{
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sb.Append(text[index]);
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sb.Append('-');
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index += 2;
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}
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firstLetter = false;
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}
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sb.Append(ch);
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index++;
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}
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return sb.ToString();
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}
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private string Fix(string original, string lastLine, List<string> nameList, CultureInfo subtitleCulture, double millisecondsFromLast)
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{
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var text = original;
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if (FixNormal)
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{
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if (FixNormalOnlyAllUppercase && text != text.ToUpper(subtitleCulture))
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{
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return text;
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}
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if (text.Length > 1)
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{
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// first all to lower
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text = text.ToLower(subtitleCulture).Trim();
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text = text.FixExtraSpaces();
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var st = new StrippableText(text);
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st.FixCasing(nameList, false, true, true, lastLine, millisecondsFromLast); // fix all casing but names (that's a seperate option)
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text = st.MergedString;
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}
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}
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else if (FixMakeUppercase)
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{
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var st = new StrippableText(text);
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text = st.Pre + st.StrippedText.ToUpper(subtitleCulture) + st.Post;
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text = HtmlUtil.FixUpperTags(text); // tags inside text
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}
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else if (FixMakeLowercase)
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{
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text = text.ToLower(subtitleCulture);
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}
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if (original != text)
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{
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NoOfLinesChanged++;
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}
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return text;
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}
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}
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}
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