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SubtitleEdit/libse/LanguageAutoDetect.cs

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Some line endings to CRLF
2016-02-08 21:11:03 +01:00
using System;
using System.Collections.Generic;
using System.IO;
using System.Text;
using System.Text.RegularExpressions;
namespace Nikse.SubtitleEdit.Core
{
public static class LanguageAutoDetect
{
private static int GetCount(string text, params string[] words)
{
var options = RegexOptions.CultureInvariant | RegexOptions.ExplicitCapture;
var pattern = "\\b(" + string.Join("|", words) + ")\\b";
return Regex.Matches(text, pattern, options).Count;
}
private static int GetCountContains(string text, params string[] words)
{
int count = 0;
for (int i = 0; i < words.Length; i++)
{
var regEx = new Regex(words[i]);
count += regEx.Matches(text).Count;
}
return count;
}
public static string AutoDetectGoogleLanguage(Encoding encoding)
{
switch (encoding.CodePage)
{
case 860:
return "pt"; // Portuguese
case 28599:
case 1254:
return "tr"; // Turkish
case 28598:
case 1255:
return "he"; // Hebrew
case 28596:
case 1256:
return "ar"; // Arabic
case 1258:
return "vi"; // Vietnamese
case 949:
case 1361:
case 20949:
case 51949:
case 50225:
return "ko"; // Korean
case 1253:
case 28597:
return "el"; // Greek
case 50220:
case 50221:
case 50222:
case 51932:
case 20932:
case 10001:
return "ja"; // Japanese
case 20000:
case 20002:
case 20936:
case 950:
case 52936:
case 54936:
case 51936:
return "zh"; // Chinese
default:
return null;
}
}
Synchronized AutoDetectLanguageName with AutoDetectGoogleLanguage (LanguageAutoDetect)
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private static readonly string[] AutoDetectWordsEnglish = { "we", "are", "and", "your?", "what", "[TW]hat's", "You're", "(any|some|every)thing", "money", "because" };
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private static readonly string[] AutoDetectWordsDanish = { "vi", "han", "og", "jeg", "var", "men", "gider", "bliver", "virkelig", "kommer", "tilbage", "Hej" };
private static readonly string[] AutoDetectWordsNorwegian = { "vi", "er", "og", "jeg", "var", "men" };
private static readonly string[] AutoDetectWordsSwedish = { "vi", "är", "och", "Jag", "inte", "för" };
private static readonly string[] AutoDetectWordsSpanish = { "qué", "eso", "muy", "estoy?", "ahora", "hay", "tú", "así", "cuando", "cómo", "él", "sólo", "quiero", "gracias", "puedo", "bueno", "soy", "hacer", "fue", "eres", "usted", "tienes", "puede",
"[Ss]eñor", "ese", "voy", "quién", "creo", "hola", "dónde", "sus", "verdad", "quieres", "mucho", "entonces", "estaba", "tiempo", "esa", "mejor", "hombre", "hace", "dios", "también", "están",
"siempre", "hasta", "ahí", "siento", "puedes" };
private static readonly string[] AutoDetectWordsItalian = { "Buongiorno", "Grazie", "Cosa", "quest[ao]", "quell[ao]", "tutt[io]", "[st]uo", "qualcosa", "ancora", "sono", "bene", "più", "andare", "essere", "venire", "abbiamo", "andiamo", "ragazzi",
"signore", "numero", "giorno", "propriamente", "sensitivo", "negativo", "davvero", "faccio", "voglio", "vuole", "perché", "allora", "niente", "anche", "stai", "detto", "fatto", "hanno",
"molto", "stato", "siamo", "così", "vuoi", "noi", "vero", "loro", "fare", "gli", "due" };
private static readonly string[] AutoDetectWordsFrench = { "pas", "[vn]ous", "ça", "une", "pour", "[mt]oi", "dans", "elle", "tout", "plus", "[bmt]on", "suis", "avec", "oui", "fait", "ils", "être", "faire", "comme", "était", "quoi", "ici", "veux",
"rien", "dit", "où", "votre", "pourquoi", "sont", "cette", "peux", "alors", "comment", "avez", "très", "même", "merci", "ont", "aussi", "chose", "voir", "allez", "tous", "ces", "deux" };
private static readonly string[] AutoDetectWordsPortuguese = { "[Nn]ão", "[Ee]ntão", "uma", "ele", "bem", "isso", "você", "sim", "meu", "muito", "estou", "ela", "fazer", "tem", "já", "minha", "tudo", "só", "tenho", "agora", "vou", "seu", "quem",
"há", "lhe", "quero", "nós", "coisa", "são", "ter", "dizer", "eles", "pode", "bom", "mesmo", "mim", "estava", "assim", "estão", "até", "quer", "temos", "acho", "obrigado", "também",
"tens", "deus", "quê", "ainda", "noite" };
Made last fix for Dutch more consistent - thx xylographe :)
2016-03-26 09:34:43 +01:00
private static readonly string[] AutoDetectWordsGerman = { "und", "auch", "sich", "bin", "hast", "möchte", "müssen", "weiß", "[Vv]ielleicht", "Warum", "jetzt" };
private static readonly string[] AutoDetectWordsDutch = { "van", "een", "[Hh]et", "m(ij|ij)", "z(ij|ij)n", "hebben", "alleen", "Waarom" };
Some line endings to CRLF
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private static readonly string[] AutoDetectWordsPolish = { "Czy", "ale", "ty", "siê", "jest", "mnie" };
private static readonly string[] AutoDetectWordsGreek = { "μου", "[Εε]ίναι", "αυτό", "Τόμπυ", "καλά", "Ενταξει", "πρεπει", "Λοιπον", "τιποτα", "ξερεις" };
private static readonly string[] AutoDetectWordsRussian = { "[Ээч]?то", "[Нн]е", "[ТтМмбв]ы", "Да", "[Нн]ет", "Он", "его", "тебя", "как", "меня", "Но", "всё", "мне", "вас", "знаю", "ещё", "за", "нас", "чтобы", "был" };
private static readonly string[] AutoDetectWordsUkrainian = { "[Нн]і", "[Пп]ривіт", "[Цц]е", "[Щщ]о", "[Йй]ого", "[Вв]ін", "[Яя]к", "[Гг]аразд", "[Яя]кщо", "[Мм]ені", "[Тт]вій", "[Її]х", "[Вв]ітаю", "[Дд]якую", "вже", "було", "був", "цього",
"нічого", "немає", "може", "знову", "бо", "щось", "щоб", "цим", "тобі", "хотів", "твоїх", "мої", "мій", "має", "їм", "йому", "дуже" };
private static readonly string[] AutoDetectWordsBulgarian = { "[Кк]акво", "тук", "може", "Как", "Ваше" };
private static readonly string[] AutoDetectWordsArabic = { "من", "هل", "لا", "فى", "لقد", "ما" };
private static readonly string[] AutoDetectWordsHebrew = { "אתה", "אולי", "הוא", "בסדר", "יודע", "טוב" };
private static readonly string[] AutoDetectWordsVietnamese = { "không", "[Tt]ôi", "anh", "đó", "ông" };
private static readonly string[] AutoDetectWordsHungarian = { "hogy", "lesz", "tudom", "vagy", "mondtam", "még" };
private static readonly string[] AutoDetectWordsTurkish = { "için", "Tamam", "Hayır", "benim", "daha", "deðil", "önce", "lazým", "çalýþýyor", "burada", "efendim" };
private static readonly string[] AutoDetectWordsCroatianAndSerbian = { "sam", "ali", "nije", "samo", "ovo", "kako", "dobro", "sve", "tako", "će", "mogu", "ću", "zašto", "nešto", "za" };
private static readonly string[] AutoDetectWordsCroatian = { "što", "ovdje", "gdje", "kamo", "tko", "prije", "uvijek", "vrijeme", "vidjeti", "netko",
"vidio", "nitko", "bok", "lijepo", "oprosti", "htio", "mjesto", "oprostite", "čovjek", "dolje",
"čovječe", "dvije", "dijete", "dio", "poslije", "događa", "vjerovati", "vjerojatno", "vjerujem", "točno",
"razumijem", "vidjela", "cijeli", "svijet", "obitelj", "volio", "sretan", "dovraga", "svijetu", "htjela",
"vidjeli", "negdje", "želio", "ponovno", "djevojka", "umrijeti", "čovjeka", "mjesta", "djeca", "osjećam",
"uopće", "djecu", "naprijed", "obitelji", "doista", "mjestu", "lijepa", "također", "riječ", "tijelo" };
private static readonly string[] AutoDetectWordsSerbian = { "šta", "ovde", "gde", "ko", "pre", "uvek", "vreme", "videti", "neko",
"video", "niko", "ćao", "lepo", "izvini", "hteo", "mesto", "izvinite", "čovek", "dole",
"čoveče", "dve", "dete", "deo", "posle", "dešava", "verovati", "verovatno", "verujem", "tačno",
"razumem", "videla", "ceo", "svet", "porodica", "voleo", "srećan", "dođavola", "svetu", "htela",
"videli", "negde", "želeo", "ponovo", "devojka", "umreti", "čoveka", "mesta", "deca", "osećam",
"uopšte", "decu", "napred", "porodicu", "zaista", "mestu", "lepa", "takođe", "reč", "telo" };
private static readonly string[] AutoDetectWordsSerbianCyrillic = { "сам", "али", "није", "само", "ово", "како", "добро", "све", "тако", "ће", "могу", "ћу", "зашто", "нешто", "за", "шта", "овде" };
private static readonly string[] AutoDetectWordsIndonesian = { "yang", "tahu", "bisa", "akan", "tahun", "tapi", "dengan", "untuk", "rumah", "dalam", "sudah", "bertemu" };
private static readonly string[] AutoDetectWordsThai = { "โอ", "โรเบิร์ต", "วิตตอเรีย", "ดร", "คุณตำรวจ", "ราเชล", "ไม่", "เลดดิส", "พระเจ้า", "เท็ดดี้", "หัวหน้า", "แอนดรูว์" };
private static readonly string[] AutoDetectWordsKorean = { "그리고", "아니야", "하지만", "말이야", "그들은", "우리가" };
private static readonly string[] AutoDetectWordsFinnish = { "että", "kuin", "minä", "mitään", "Mutta", "siitä", "täällä", "poika", "Kiitos", "enää", "vielä", "tässä" };
private static readonly string[] AutoDetectWordsRomanian1 = { "pentru", "oamenii", "decât", "[Vv]reau", "[Ss]înt", "Asteaptã", "Fãrã", "aici", "domnule", "trãiascã", "niciodatã", "înseamnã", "vorbesti", "fãcut", "spune" };
private static readonly string[] AutoDetectWordsRomanian2 = { "pentru", "oamenii", "decat", "[Tt]rebuie", "[Aa]cum", "Poate", "vrea", "soare", "nevoie", "daca", "echilibrul", "vorbesti", "zeului", "atunci", "memoria", "soarele" };
private static string AutoDetectGoogleLanguage(string text, int bestCount)
{
int count = GetCount(text, AutoDetectWordsEnglish);
if (count > bestCount)
Fixed better detection of Dutch (could be detected as English due to the word "we")
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{
int dutchCount = GetCount(text, AutoDetectWordsDutch);
Synchronized AutoDetectLanguageName with AutoDetectGoogleLanguage (LanguageAutoDetect)
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if (dutchCount < count)
Made last fix for Dutch more consistent - thx xylographe :)
2016-03-26 09:34:43 +01:00
return "en";
Fixed better detection of Dutch (could be detected as English due to the word "we")
2016-03-25 21:36:18 +01:00
}
Some line endings to CRLF
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count = GetCount(text, AutoDetectWordsDanish);
if (count > bestCount)
{
int norwegianCount = GetCount(text, "ut", "deg", "meg", "merkelig", "mye", "spørre");
int dutchCount = GetCount(text, AutoDetectWordsDutch);
if (norwegianCount < 2 && dutchCount < count)
return "da";
}
count = GetCount(text, AutoDetectWordsNorwegian);
if (count > bestCount)
{
int danishCount = GetCount(text, "siger", "dig", "mig", "mærkelig", "tilbage", "spørge");
int dutchCount = GetCount(text, AutoDetectWordsDutch);
if (danishCount < 2 && dutchCount < count)
return "no";
}
count = GetCount(text, AutoDetectWordsSwedish);
if (count > bestCount)
return "sv";
count = GetCount(text, AutoDetectWordsSpanish);
if (count > bestCount)
{
int frenchCount = GetCount(text, "[Cc]'est", "pas", "vous", "pour", "suis", "Pourquoi", "maison", "souviens", "quelque"); // not spanish words
int portugueseCount = GetCount(text, "[NnCc]ão", "Então", "h?ouve", "pessoal", "rapariga", "tivesse", "fizeste",
"jantar", "conheço", "atenção", "foste", "milhões", "devias", "ganhar", "raios"); // not spanish words
if (frenchCount < 2 && portugueseCount < 2)
return "es";
}
count = GetCount(text, AutoDetectWordsItalian);
if (count > bestCount)
{
int frenchCount = GetCount(text, "[Cc]'est", "pas", "vous", "pour", "suis", "Pourquoi", "maison", "souviens", "quelque"); // not italian words
if (frenchCount < 2)
return "it";
}
count = GetCount(text, AutoDetectWordsFrench);
if (count > bestCount)
{
int romanianCount = GetCount(text, "[Vv]reau", "[Ss]înt", "[Aa]cum", "pentru", "domnule", "aici");
if (romanianCount < 5)
return "fr";
}
count = GetCount(text, AutoDetectWordsPortuguese);
if (count > bestCount)
return "pt"; // Portuguese
count = GetCount(text, AutoDetectWordsGerman);
if (count > bestCount)
return "de";
count = GetCount(text, AutoDetectWordsDutch);
if (count > bestCount)
return "nl";
count = GetCount(text, AutoDetectWordsPolish);
if (count > bestCount)
return "pl";
count = GetCount(text, AutoDetectWordsGreek);
if (count > bestCount)
return "el"; // Greek
count = GetCount(text, AutoDetectWordsRussian);
if (count > bestCount)
return "ru"; // Russian
count = GetCount(text, AutoDetectWordsUkrainian);
if (count > bestCount)
return "uk"; // Ukrainian
count = GetCount(text, AutoDetectWordsBulgarian);
if (count > bestCount)
return "bg"; // Bulgarian
count = GetCount(text, AutoDetectWordsArabic);
if (count > bestCount)
{
int hebrewCount = GetCount(text, AutoDetectWordsHebrew);
if (hebrewCount < count)
return "ar"; // Arabic
}
count = GetCount(text, AutoDetectWordsHebrew);
if (count > bestCount)
return "he"; // Hebrew
count = GetCount(text, AutoDetectWordsCroatianAndSerbian);
if (count > bestCount)
{
int croatianCount = GetCount(text, AutoDetectWordsCroatian);
int serbianCount = GetCount(text, AutoDetectWordsSerbian);
if (croatianCount > serbianCount)
return "hr"; // Croatian
return "sr"; // Serbian
}
count = GetCount(text, AutoDetectWordsVietnamese);
if (count > bestCount)
return "vi"; // Vietnamese
count = GetCount(text, AutoDetectWordsHungarian);
if (count > bestCount)
return "hu"; // Hungarian
count = GetCount(text, AutoDetectWordsTurkish);
if (count > bestCount)
return "tr"; // Turkish
count = GetCount(text, AutoDetectWordsIndonesian);
if (count > bestCount)
return "id"; // Indonesian
count = GetCount(text, AutoDetectWordsThai);
if (count > 10 || count > bestCount)
return "th"; // Thai
count = GetCount(text, AutoDetectWordsKorean);
if (count > 10 || count > bestCount)
return "ko"; // Korean
count = GetCount(text, AutoDetectWordsFinnish);
if (count > bestCount)
return "fi"; // Finnish
count = GetCount(text, AutoDetectWordsRomanian1);
if (count <= bestCount)
count = GetCount(text, AutoDetectWordsRomanian2);
if (count > bestCount)
return "ro"; // Romanian
count = GetCountContains(text, "シ", "ュ", "シン", "シ", "ン", "ユ");
count += GetCountContains(text, "イ", "ン", "チ", "ェ", "ク", "ハ");
count += GetCountContains(text, "シ", "ュ", "う", "シ", "ン", "サ");
count += GetCountContains(text, "シ", "ュ", "シ", "ン", "だ", "う");
if (count > bestCount * 2)
return "ja"; // Japanese - not tested...
count = GetCountContains(text, "是", "是早", "吧", "的", "爱", "上好");
count += GetCountContains(text, "的", "啊", "好", "好", "亲", "的");
count += GetCountContains(text, "谢", "走", "吧", "晚", "上", "好");
count += GetCountContains(text, "来", "卡", "拉", "吐", "滚", "他");
if (count > bestCount * 2)
return "zh"; // Chinese (simplified) - not tested...
return string.Empty;
}
public static string AutoDetectGoogleLanguage(Subtitle subtitle)
{
string languageId = AutoDetectGoogleLanguageOrNull(subtitle);
if (languageId == null)
languageId = "en";
return languageId;
}
public static string AutoDetectGoogleLanguageOrNull(Subtitle subtitle)
{
[Subtitle] - Add helper method to get all text from Subtitle
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string languageId = AutoDetectGoogleLanguage(subtitle.GetAllTexts(), subtitle.Paragraphs.Count / 14);
Some line endings to CRLF
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if (string.IsNullOrEmpty(languageId))
languageId = null;
return languageId;
}
public static string AutoDetectLanguageName(string languageName, Subtitle subtitle)
{
if (string.IsNullOrEmpty(languageName))
languageName = "en_US";
int bestCount = subtitle.Paragraphs.Count / 14;
[Subtitle] - Add helper method to get all text from Subtitle
2016-03-23 22:52:24 +01:00
string text = subtitle.GetAllTexts();
Some line endings to CRLF
2016-02-08 21:11:03 +01:00
List<string> dictionaryNames = Utilities.GetDictionaryLanguages();
bool containsEnGb = false;
bool containsEnUs = false;
bool containsHrHr = false;
bool containsSrLatn = false;
foreach (string name in dictionaryNames)
{
if (name.Contains("[en_GB]"))
containsEnGb = true;
if (name.Contains("[en_US]"))
containsEnUs = true;
if (name.Contains("[hr_HR]"))
containsHrHr = true;
if (name.Contains("[sr-Latn]"))
containsSrLatn = true;
}
foreach (string name in dictionaryNames)
{
string shortName = string.Empty;
int start = name.IndexOf('[');
int end = name.IndexOf(']');
if (start > 0 && end > start)
{
start++;
shortName = name.Substring(start, end - start);
}
int count;
switch (shortName)
{
case "da_DK":
count = GetCount(text, AutoDetectWordsDanish);
if (count > bestCount)
{
int norwegianCount = GetCount(text, "ut", "deg", "meg", "merkelig", "mye", "spørre");
int dutchCount = GetCount(text, AutoDetectWordsDutch);
if (norwegianCount < 2 && dutchCount < count)
languageName = shortName;
}
break;
case "nb_NO":
count = GetCount(text, AutoDetectWordsNorwegian);
if (count > bestCount)
{
int danishCount = GetCount(text, "siger", "dig", "mig", "mærkelig", "tilbage", "spørge");
int dutchCount = GetCount(text, AutoDetectWordsDutch);
if (danishCount < 2 && dutchCount < count)
languageName = shortName;
}
break;
case "sv_SE":
count = GetCount(text, AutoDetectWordsSwedish);
if (count > bestCount)
languageName = shortName;
break;
case "en_US":
count = GetCount(text, AutoDetectWordsEnglish);
if (count > bestCount)
{
Synchronized AutoDetectLanguageName with AutoDetectGoogleLanguage (LanguageAutoDetect)
2016-04-13 20:56:17 +02:00
int dutchCount = GetCount(text, AutoDetectWordsDutch);
if (dutchCount < count)
Some line endings to CRLF
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{
Synchronized AutoDetectLanguageName with AutoDetectGoogleLanguage (LanguageAutoDetect)
2016-04-13 20:56:17 +02:00
languageName = shortName;
if (containsEnGb)
{
int usCount = GetCount(text, "color", "flavor", "honor", "humor", "neighbor", "honor");
int gbCount = GetCount(text, "colour", "flavour", "honour", "humour", "neighbour", "honour");
if (gbCount > usCount)
languageName = "en_GB";
}
Some line endings to CRLF
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}
}
break;
case "en_GB":
count = GetCount(text, AutoDetectWordsEnglish);
if (count > bestCount)
{
Synchronized AutoDetectLanguageName with AutoDetectGoogleLanguage (LanguageAutoDetect)
2016-04-13 20:56:17 +02:00
int dutchCount = GetCount(text, AutoDetectWordsDutch);
if (dutchCount < count)
Some line endings to CRLF
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{
Synchronized AutoDetectLanguageName with AutoDetectGoogleLanguage (LanguageAutoDetect)
2016-04-13 20:56:17 +02:00
languageName = shortName;
if (containsEnUs)
{
int usCount = GetCount(text, "color", "flavor", "honor", "humor", "neighbor", "honor");
int gbCount = GetCount(text, "colour", "flavour", "honour", "humour", "neighbour", "honour");
if (gbCount < usCount)
languageName = "en_US";
}
Some line endings to CRLF
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}
}
break;
case "es_ES":
count = GetCount(text, AutoDetectWordsSpanish);
if (count > bestCount)
{
int frenchCount = GetCount(text, "[Cc]'est", "pas", "vous", "pour", "suis", "Pourquoi", "maison", "souviens", "quelque"); // not spanish words
int portugueseCount = GetCount(text, "[NnCc]ão", "Então", "h?ouve", "pessoal", "rapariga", "tivesse", "fizeste",
"jantar", "conheço", "atenção", "foste", "milhões", "devias", "ganhar", "raios"); // not spanish words
if (frenchCount < 2 && portugueseCount < 2)
languageName = shortName;
}
break;
case "it_IT":
count = GetCount(text, AutoDetectWordsItalian);
if (count > bestCount)
{
int frenchCount = GetCount(text, "[Cc]'est", "pas", "vous", "pour", "suis", "Pourquoi", "maison", "souviens", "quelque"); // not italian words
int spanishCount = GetCount(text, "Hola", "nada", "Vamos", "pasa", "los", "como"); // not italian words
if (frenchCount < 2 && spanishCount < 2)
languageName = shortName;
}
break;
case "fr_FR":
count = GetCount(text, AutoDetectWordsFrench);
if (count > bestCount)
{
int romanianCount = GetCount(text, "[Vv]reau", "[Ss]înt", "[Aa]cum", "pentru", "domnule", "aici");
int spanishCount = GetCount(text, "Hola", "nada", "Vamos", "pasa", "los", "como"); // not french words
int italianCount = GetCount(text, AutoDetectWordsItalian);
if (romanianCount < 5 && spanishCount < 2 && italianCount < 2)
languageName = shortName;
}
break;
case "de_DE":
count = GetCount(text, AutoDetectWordsGerman);
if (count > bestCount)
languageName = shortName;
break;
case "nl_NL":
count = GetCount(text, AutoDetectWordsDutch);
if (count > bestCount)
languageName = shortName;
break;
case "pl_PL":
count = GetCount(text, AutoDetectWordsPolish);
if (count > bestCount)
languageName = shortName;
break;
case "el_GR":
count = GetCount(text, AutoDetectWordsGreek);
if (count > bestCount)
languageName = shortName;
break;
case "ru_RU":
count = GetCount(text, AutoDetectWordsRussian);
if (count > bestCount)
languageName = shortName;
break;
case "uk_UA":
count = GetCount(text, AutoDetectWordsUkrainian);
if (count > bestCount)
languageName = shortName;
break;
case "ro_RO":
count = GetCount(text, AutoDetectWordsRomanian1);
if (count <= bestCount)
count = GetCount(text, AutoDetectWordsRomanian2);
if (count > bestCount)
languageName = shortName;
break;
case "hr_HR": // Croatian
count = GetCount(text, AutoDetectWordsCroatianAndSerbian);
if (count > bestCount)
{
languageName = shortName;
if (containsSrLatn)
{
int croatianCount = GetCount(text, AutoDetectWordsCroatian);
int serbianCount = GetCount(text, AutoDetectWordsSerbian);
if (serbianCount > croatianCount)
languageName = "sr-Latn";
}
}
break;
case "sr-Latn": // Serbian (Latin)
count = GetCount(text, AutoDetectWordsCroatianAndSerbian);
if (count > bestCount)
{
languageName = shortName;
if (containsHrHr)
{
int croatianCount = GetCount(text, AutoDetectWordsCroatian);
int serbianCount = GetCount(text, AutoDetectWordsSerbian);
if (serbianCount < croatianCount)
languageName = "hr_HR";
}
}
break;
case "sr": // Serbian (Cyrillic)
count = GetCount(text, AutoDetectWordsSerbianCyrillic);
if (count > bestCount)
languageName = shortName;
break;
case "pt_PT": // Portuguese
count = GetCount(text, AutoDetectWordsPortuguese);
if (count > bestCount)
languageName = shortName;
break;
case "pt_BR": // Portuguese (Brasil)
count = GetCount(text, AutoDetectWordsPortuguese);
if (count > bestCount)
languageName = shortName;
break;
case "hu_HU": // Hungarian
count = GetCount(text, AutoDetectWordsHungarian);
if (count > bestCount)
languageName = shortName;
break;
}
}
return languageName;
}
public static Encoding DetectAnsiEncoding(byte[] buffer)
{
if (Utilities.IsRunningOnMono())
return Encoding.Default;
try
{
Encoding encoding = DetectEncoding.EncodingTools.DetectInputCodepage(buffer);
Encoding greekEncoding = Encoding.GetEncoding(1253); // Greek
if (GetCount(greekEncoding.GetString(buffer), AutoDetectWordsGreek) > 5)
return greekEncoding;
Encoding russianEncoding = Encoding.GetEncoding(1251); // Cyrillic
if (GetCount(russianEncoding.GetString(buffer), "что", "быть", "весь", "этот", "один", "такой") > 5) // Russian
return russianEncoding;
if (GetCount(russianEncoding.GetString(buffer), "Какво", "тук", "може", "Как", "Ваше", "какво") > 5) // Bulgarian
return russianEncoding;
russianEncoding = Encoding.GetEncoding(28595); // Russian
if (GetCount(russianEncoding.GetString(buffer), "что", "быть", "весь", "этот", "один", "такой") > 5) // Russian
return russianEncoding;
Encoding thaiEncoding = Encoding.GetEncoding(874); // Thai
if (GetCount(thaiEncoding.GetString(buffer), "โอ", "โรเบิร์ต", "วิตตอเรีย", "ดร", "คุณตำรวจ", "ราเชล", "ไม่", "เลดดิส", "พระเจ้า", "เท็ดดี้", "หัวหน้า", "แอนดรูว์") > 5)
return thaiEncoding;
Encoding arabicEncoding = Encoding.GetEncoding(28596); // Arabic
Encoding hewbrewEncoding = Encoding.GetEncoding(28598); // Hebrew
if (GetCount(arabicEncoding.GetString(buffer), AutoDetectWordsArabic) > 5)
{
if (GetCount(hewbrewEncoding.GetString(buffer), AutoDetectWordsHebrew) > 10)
return hewbrewEncoding;
return arabicEncoding;
}
if (GetCount(hewbrewEncoding.GetString(buffer), AutoDetectWordsHebrew) > 5)
return hewbrewEncoding;
return encoding;
}
catch
{
return Encoding.Default;
}
}
public static Encoding GetEncodingFromFile(string fileName)
{
var encoding = Encoding.Default;
try
{
Replaced Encoding.GetEncodings with Configuration.AvailableEncodings
2016-05-19 17:09:15 +02:00
foreach (var enc in Configuration.AvailableEncodings)
Some line endings to CRLF
2016-02-08 21:11:03 +01:00
{
Use TextEncodingListItem and related UiUtil methods DefaultEncoding switches from Encoding.EncodingName to platform and locale independent IANA registered name (Encoding.WebName).
2016-05-20 00:46:02 +02:00
if (enc.WebName == Configuration.Settings.General.DefaultEncoding && enc.WebName != Encoding.Unicode.WebName && enc.WebName != Encoding.UTF8.WebName)
Some line endings to CRLF
2016-02-08 21:11:03 +01:00
{
Replaced Encoding.GetEncodings with Configuration.AvailableEncodings
2016-05-19 17:09:15 +02:00
encoding = enc;
Some line endings to CRLF
2016-02-08 21:11:03 +01:00
break;
}
}
using (var file = new FileStream(fileName, FileMode.Open, FileAccess.Read, FileShare.ReadWrite))
{
var bom = new byte[12]; // Get the byte-order mark, if there is one
file.Position = 0;
file.Read(bom, 0, bom.Length);
if (bom[0] == 0xef && bom[1] == 0xbb && bom[2] == 0xbf)
encoding = Encoding.UTF8;
Some fixes for utf32 (reading never actually worked...)
2016-05-21 09:47:24 +02:00
else if (bom[0] == 0xff && bom[1] == 0xfe && bom[2] == 0 && bom[3] == 0)
encoding = Encoding.GetEncoding(12000); // UTF-32 (LE)
Some line endings to CRLF
2016-02-08 21:11:03 +01:00
else if (bom[0] == 0xff && bom[1] == 0xfe)
encoding = Encoding.Unicode;
else if (bom[0] == 0xfe && bom[1] == 0xff) // utf-16 and ucs-2
encoding = Encoding.BigEndianUnicode;
else if (bom[0] == 0 && bom[1] == 0 && bom[2] == 0xfe && bom[3] == 0xff) // ucs-4
Some fixes for utf32 (reading never actually worked...)
2016-05-21 09:47:24 +02:00
encoding = Encoding.GetEncoding(12001); // UTF-32 (BE)
Some line endings to CRLF
2016-02-08 21:11:03 +01:00
else if (bom[0] == 0x2b && bom[1] == 0x2f && bom[2] == 0x76 && (bom[3] == 0x38 || bom[3] == 0x39 || bom[3] == 0x2b || bom[3] == 0x2f)) // utf-7
encoding = Encoding.UTF7;
else if (file.Length > bom.Length)
{
long length = file.Length;
if (length > 500000)
length = 500000;
file.Position = 0;
var buffer = new byte[length];
file.Read(buffer, 0, buffer.Length);
bool couldBeUtf8;
if (IsUtf8(buffer, out couldBeUtf8))
{
encoding = Encoding.UTF8;
}
Use TextEncodingListItem and related UiUtil methods DefaultEncoding switches from Encoding.EncodingName to platform and locale independent IANA registered name (Encoding.WebName).
2016-05-20 00:46:02 +02:00
else if (couldBeUtf8 && Configuration.Settings.General.DefaultEncoding == Encoding.UTF8.WebName)
Some line endings to CRLF
2016-02-08 21:11:03 +01:00
{ // keep utf-8 encoding if it's default
encoding = Encoding.UTF8;
}
else if (couldBeUtf8 && fileName.EndsWith(".xml", StringComparison.OrdinalIgnoreCase) && Encoding.Default.GetString(buffer).ToLower().Replace('\'', '"').Contains("encoding=\"utf-8\""))
{ // keep utf-8 encoding for xml files with utf-8 in header (without any utf-8 encoded characters, but with only allowed utf-8 characters)
encoding = Encoding.UTF8;
}
else if (Configuration.Settings.General.AutoGuessAnsiEncoding)
{
encoding = DetectAnsiEncoding(buffer);
Encoding greekEncoding = Encoding.GetEncoding(1253); // Greek
if (GetCount(greekEncoding.GetString(buffer), AutoDetectWordsGreek) > 5)
return greekEncoding;
Encoding russianEncoding = Encoding.GetEncoding(1251); // Cyrillic
if (GetCount(russianEncoding.GetString(buffer), "что", "быть", "весь", "этот", "один", "такой") > 5) // Russian
return russianEncoding;
if (GetCount(russianEncoding.GetString(buffer), "Какво", "тук", "може", "Как", "Ваше", "какво") > 5) // Bulgarian
return russianEncoding;
russianEncoding = Encoding.GetEncoding(28595); // Russian
if (GetCount(russianEncoding.GetString(buffer), "что", "быть", "весь", "этот", "один", "такой") > 5)
return russianEncoding;
Encoding thaiEncoding = Encoding.GetEncoding(874); // Thai
if (GetCount(thaiEncoding.GetString(buffer), "โอ", "โรเบิร์ต", "วิตตอเรีย", "ดร", "คุณตำรวจ", "ราเชล", "ไม่", "เลดดิส", "พระเจ้า", "เท็ดดี้", "หัวหน้า", "แอนดรูว์") > 5)
return thaiEncoding;
Encoding arabicEncoding = Encoding.GetEncoding(28596); // Arabic
Encoding hewbrewEncoding = Encoding.GetEncoding(28598); // Hebrew
if (GetCount(arabicEncoding.GetString(buffer), AutoDetectWordsArabic) > 5)
{
if (GetCount(hewbrewEncoding.GetString(buffer), AutoDetectWordsHebrew) > 10)
return hewbrewEncoding;
return arabicEncoding;
}
if (GetCount(hewbrewEncoding.GetString(buffer), AutoDetectWordsHebrew) > 5)
return hewbrewEncoding;
Encoding romanianEncoding = Encoding.GetEncoding(1250); // Romanian
if (GetCount(romanianEncoding.GetString(buffer), "să", "şi", "văzut", "regulă", "găsit", "viaţă") > 99)
return romanianEncoding;
Encoding koreanEncoding = Encoding.GetEncoding(949); // Korean
if (GetCount(koreanEncoding.GetString(buffer), "그리고", "아니야", "하지만", "말이야", "그들은", "우리가") > 5)
return koreanEncoding;
}
}
}
}
catch
{
Keep last spell check language if language is the same (eg if en_GB was last language, the en_GB will be used even if en_US is detected) - thx hello_hello :)
2016-03-31 21:55:19 +02:00
// ignored
Some line endings to CRLF
2016-02-08 21:11:03 +01:00
}
return encoding;
}
/// <summary>
/// Will try to determine if buffer is utf-8 encoded or not.
/// If any non-utf8 sequences are found then false is returned, if no utf8 multibytes sequences are found then false is returned.
/// </summary>
private static bool IsUtf8(byte[] buffer, out bool couldBeUtf8)
{
couldBeUtf8 = false;
int utf8Count = 0;
int i = 0;
while (i < buffer.Length - 3)
{
byte b = buffer[i];
if (b > 127)
{
if (b >= 194 && b <= 223 && buffer[i + 1] >= 128 && buffer[i + 1] <= 191)
{ // 2-byte sequence
utf8Count++;
i++;
}
else if (b >= 224 && b <= 239 && buffer[i + 1] >= 128 && buffer[i + 1] <= 191 &&
buffer[i + 2] >= 128 && buffer[i + 2] <= 191)
{ // 3-byte sequence
utf8Count++;
i += 2;
}
else if (b >= 240 && b <= 244 && buffer[i + 1] >= 128 && buffer[i + 1] <= 191 &&
buffer[i + 2] >= 128 && buffer[i + 2] <= 191 &&
buffer[i + 3] >= 128 && buffer[i + 3] <= 191)
{ // 4-byte sequence
utf8Count++;
i += 3;
}
else
{
return false;
}
}
i++;
}
couldBeUtf8 = true;
if (utf8Count == 0)
return false; // not utf-8 (no characters utf-8 encoded...)
return true;
}
}
}
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