mirror of
https://github.com/SubtitleEdit/subtitleedit.git
synced 2024-10-27 14:32:35 +01:00
723 lines
39 KiB
C#
723 lines
39 KiB
C#
using System;
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using System.Collections.Generic;
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using System.IO;
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using System.Text;
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using System.Text.RegularExpressions;
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namespace Nikse.SubtitleEdit.Core
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{
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public static class LanguageAutoDetect
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{
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private static int GetCount(string text, params string[] words)
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{
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int count = 0;
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for (int i = 0; i < words.Length; i++)
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{
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count += Regex.Matches(text, "\\b" + words[i] + "\\b", (RegexOptions.CultureInvariant | RegexOptions.ExplicitCapture)).Count;
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}
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return count;
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}
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private static int GetCountContains(string text, params string[] words)
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{
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int count = 0;
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for (int i = 0; i < words.Length; i++)
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{
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var regEx = new Regex(words[i]);
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count += regEx.Matches(text).Count;
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}
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return count;
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}
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public static string AutoDetectGoogleLanguage(Encoding encoding)
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{
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switch (encoding.CodePage)
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{
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case 860:
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return "pt"; // Portuguese
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case 28599:
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case 1254:
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return "tr"; // Turkish
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case 28598:
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case 1255:
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return "he"; // Hebrew
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case 28596:
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case 1256:
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return "ar"; // Arabic
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case 1258:
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return "vi"; // Vietnamese
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case 949:
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case 1361:
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case 20949:
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case 51949:
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case 50225:
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return "ko"; // Korean
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case 1253:
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case 28597:
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return "el"; // Greek
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case 50220:
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case 50221:
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case 50222:
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case 51932:
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case 20932:
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case 10001:
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return "ja"; // Japanese
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case 20000:
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case 20002:
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case 20936:
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case 950:
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case 52936:
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case 54936:
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case 51936:
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return "zh"; // Chinese
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default:
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return null;
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}
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}
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private static readonly string[] AutoDetectWordsEnglish = { "we", "are", "and", "your?", "what" };
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private static readonly string[] AutoDetectWordsDanish = { "vi", "han", "og", "jeg", "var", "men", "gider", "bliver", "virkelig", "kommer", "tilbage", "Hej" };
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private static readonly string[] AutoDetectWordsNorwegian = { "vi", "er", "og", "jeg", "var", "men" };
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private static readonly string[] AutoDetectWordsSwedish = { "vi", "är", "och", "Jag", "inte", "för" };
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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",
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"[Ss]eñor", "ese", "voy", "quién", "creo", "hola", "dónde", "sus", "verdad", "quieres", "mucho", "entonces", "estaba", "tiempo", "esa", "mejor", "hombre", "hace", "dios", "también", "están",
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"siempre", "hasta", "ahí", "siento", "puedes" };
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private static readonly string[] AutoDetectWordsItalian = { "Cosa", "sono", "Grazie", "Buongiorno", "bene", "questo", "ragazzi", "propriamente", "numero", "hanno", "giorno", "faccio", "davvero", "negativo", "essere", "vuole", "sensitivo", "venire" };
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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",
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"rien", "dit", "où", "votre", "pourquoi", "sont", "cette", "peux", "alors", "comment", "avez", "très", "même", "merci", "ont", "aussi", "chose", "voir", "allez", "tous", "ces", "deux" };
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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",
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"há", "lhe", "quero", "nós", "coisa", "são", "ter", "dizer", "eles", "pode", "bom", "mesmo", "mim", "estava", "assim", "estão", "até", "quer", "temos", "acho", "obrigado", "também",
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"tens", "deus", "quê", "ainda", "noite" };
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private static readonly string[] AutoDetectWordsGerman = { "und", "auch", "sich", "bin", "hast", "möchte" };
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private static readonly string[] AutoDetectWordsDutch = { "van", "een", "[Hh]et", "m(ij|ij)", "z(ij|ij)n" };
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private static readonly string[] AutoDetectWordsPolish = { "Czy", "ale", "ty", "siê", "jest", "mnie" };
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private static readonly string[] AutoDetectWordsGreek = { "μου", "[Εε]ίναι", "αυτό", "Τόμπυ", "καλά", "Ενταξει", "πρεπει", "Λοιπον", "τιποτα", "ξερεις" };
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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" };
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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",
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"нічого", "немає", "може", "знову", "бо", "щось", "щоб", "цим", "тобі", "хотів", "твоїх", "мої", "мій", "має", "їм", "йому", "дуже" };
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private static readonly string[] AutoDetectWordsBulgarian = { "[Кк]акво", "тук", "може", "Как", "Ваше" };
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private static readonly string[] AutoDetectWordsArabic = { "من", "هل", "لا", "فى", "لقد", "ما" };
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private static readonly string[] AutoDetectWordsHebrew = { "אתה", "אולי", "הוא", "בסדר", "יודע", "טוב" };
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private static readonly string[] AutoDetectWordsVietnamese = { "không", "[Tt]ôi", "anh", "đó", "ông" };
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private static readonly string[] AutoDetectWordsHungarian = { "hogy", "lesz", "tudom", "vagy", "mondtam", "még" };
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private static readonly string[] AutoDetectWordsTurkish = { "için", "Tamam", "Hayır", "benim", "daha", "deðil", "önce", "lazým", "benim", "çalýþýyor", "burada", "efendim" };
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private static readonly string[] AutoDetectWordsCroatianAndSerbian = { "sam", "ali", "nije", "samo", "ovo", "kako", "dobro", "sve", "tako", "će", "mogu", "ću", "zašto", "nešto", "za" };
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private static readonly string[] AutoDetectWordsCroatian = { "što", "ovdje", "gdje", "kamo", "tko", "prije", "uvijek", "vrijeme", "vidjeti", "netko",
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"vidio", "nitko", "bok", "lijepo", "oprosti", "htio", "mjesto", "oprostite", "čovjek", "dolje",
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"čovječe", "dvije", "dijete", "dio", "poslije", "događa", "vjerovati", "vjerojatno", "vjerujem", "točno",
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"razumijem", "vidjela", "cijeli", "svijet", "obitelj", "volio", "sretan", "dovraga", "svijetu", "htjela",
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"vidjeli", "negdje", "želio", "ponovno", "djevojka", "umrijeti", "čovjeka", "mjesta", "djeca", "osjećam",
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"uopće", "djecu", "naprijed", "obitelji", "doista", "mjestu", "lijepa", "također", "riječ", "tijelo" };
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private static readonly string[] AutoDetectWordsSerbian = { "šta", "ovde", "gde", "ko", "pre", "uvek", "vreme", "videti", "neko",
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"video", "niko", "ćao", "lepo", "izvini", "hteo", "mesto", "izvinite", "čovek", "dole",
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"čoveče", "dve", "dete", "deo", "posle", "dešava", "verovati", "verovatno", "verujem", "tačno",
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"razumem", "videla", "ceo", "svet", "porodica", "voleo", "srećan", "dođavola", "svetu", "htela",
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"videli", "negde", "želeo", "ponovo", "devojka", "umreti", "čoveka", "mesta", "deca", "osećam",
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"uopšte", "decu", "napred", "porodicu", "zaista", "mestu", "lepa", "takođe", "reč", "telo" };
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private static readonly string[] AutoDetectWordsSerbianCyrillic = { "сам", "али", "није", "само", "ово", "како", "добро", "све", "тако", "ће", "могу", "ћу", "зашто", "нешто", "за", "шта", "овде" };
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private static readonly string[] AutoDetectWordsIndonesian = { "yang", "tahu", "bisa", "akan", "tahun", "tapi", "dengan", "untuk", "rumah", "dalam", "sudah", "bertemu" };
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private static readonly string[] AutoDetectWordsThai = { "โอ", "โรเบิร์ต", "วิตตอเรีย", "ดร", "คุณตำรวจ", "ราเชล", "ไม่", "เลดดิส", "พระเจ้า", "เท็ดดี้", "หัวหน้า", "แอนดรูว์" };
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private static readonly string[] AutoDetectWordsKorean = { "그리고", "아니야", "하지만", "말이야", "그들은", "우리가" };
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private static readonly string[] AutoDetectWordsFinnish = { "että", "kuin", "minä", "mitään", "Mutta", "siitä", "täällä", "poika", "Kiitos", "enää", "vielä", "tässä" };
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private static readonly string[] AutoDetectWordsRomanian1 = { "pentru", "oamenii", "decât", "[Vv]reau", "[Ss]înt", "Asteaptã", "Fãrã", "aici", "domnule", "trãiascã", "niciodatã", "înseamnã", "vorbesti", "fãcut", "spune" };
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private static readonly string[] AutoDetectWordsRomanian2 = { "pentru", "oamenii", "decat", "[Tt]rebuie", "[Aa]cum", "Poate", "vrea", "soare", "nevoie", "daca", "echilibrul", "vorbesti", "zeului", "atunci", "memoria", "soarele" };
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private static string AutoDetectGoogleLanguage(string text, int bestCount)
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{
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int count = GetCount(text, AutoDetectWordsEnglish);
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if (count > bestCount)
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return "en";
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count = GetCount(text, AutoDetectWordsDanish);
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if (count > bestCount)
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{
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int norwegianCount = GetCount(text, "ut", "deg", "meg", "merkelig", "mye", "spørre");
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int dutchCount = GetCount(text, AutoDetectWordsDutch);
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if (norwegianCount < 2 && dutchCount < count)
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return "da";
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}
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count = GetCount(text, AutoDetectWordsNorwegian);
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if (count > bestCount)
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{
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int danishCount = GetCount(text, "siger", "dig", "mig", "mærkelig", "tilbage", "spørge");
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int dutchCount = GetCount(text, AutoDetectWordsDutch);
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if (danishCount < 2 && dutchCount < count)
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return "no";
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}
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count = GetCount(text, AutoDetectWordsSwedish);
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if (count > bestCount)
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return "sv";
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count = GetCount(text, AutoDetectWordsSpanish);
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if (count > bestCount)
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{
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int frenchCount = GetCount(text, "[Cc]'est", "pas", "vous", "pour", "suis", "Pourquoi", "maison", "souviens", "quelque"); // not spanish words
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int portugueseCount = GetCount(text, "[NnCc]ão", "Então", "h?ouve", "pessoal", "rapariga", "tivesse", "fizeste",
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"jantar", "conheço", "atenção", "foste", "milhões", "devias", "ganhar", "raios"); // not spanish words
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if (frenchCount < 2 && portugueseCount < 2)
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return "es";
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}
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count = GetCount(text, AutoDetectWordsItalian);
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if (count > bestCount)
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{
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int frenchCount = GetCount(text, "[Cc]'est", "pas", "vous", "pour", "suis", "Pourquoi", "maison", "souviens", "quelque"); // not italian words
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if (frenchCount < 2)
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return "it";
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}
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count = GetCount(text, AutoDetectWordsFrench);
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if (count > bestCount)
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{
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int romanianCount = GetCount(text, "[Vv]reau", "[Ss]înt", "[Aa]cum", "pentru", "domnule", "aici");
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if (romanianCount < 5)
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return "fr";
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}
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count = GetCount(text, AutoDetectWordsPortuguese);
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if (count > bestCount)
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return "pt"; // Portuguese
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count = GetCount(text, AutoDetectWordsGerman);
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if (count > bestCount)
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return "de";
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count = GetCount(text, AutoDetectWordsDutch);
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if (count > bestCount)
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return "nl";
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count = GetCount(text, AutoDetectWordsPolish);
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if (count > bestCount)
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return "pl";
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count = GetCount(text, AutoDetectWordsGreek);
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if (count > bestCount)
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return "el"; // Greek
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count = GetCount(text, AutoDetectWordsRussian);
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if (count > bestCount)
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return "ru"; // Russian
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count = GetCount(text, AutoDetectWordsUkrainian);
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if (count > bestCount)
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return "uk"; // Ukrainian
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count = GetCount(text, AutoDetectWordsBulgarian);
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if (count > bestCount)
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return "bg"; // Bulgarian
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count = GetCount(text, AutoDetectWordsArabic);
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if (count > bestCount)
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{
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int hebrewCount = GetCount(text, AutoDetectWordsHebrew);
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if (hebrewCount < count)
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return "ar"; // Arabic
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}
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count = GetCount(text, AutoDetectWordsHebrew);
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if (count > bestCount)
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return "he"; // Hebrew
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count = GetCount(text, AutoDetectWordsCroatianAndSerbian);
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if (count > bestCount)
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{
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int croatianCount = GetCount(text, AutoDetectWordsCroatian);
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int serbianCount = GetCount(text, AutoDetectWordsSerbian);
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if (croatianCount > serbianCount)
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return "hr"; // Croatian
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return "sr"; // Serbian
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}
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count = GetCount(text, AutoDetectWordsVietnamese);
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if (count > bestCount)
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return "vi"; // Vietnamese
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count = GetCount(text, AutoDetectWordsHungarian);
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if (count > bestCount)
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return "hu"; // Hungarian
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count = GetCount(text, AutoDetectWordsTurkish);
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if (count > bestCount)
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return "tr"; // Turkish
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count = GetCount(text, AutoDetectWordsIndonesian);
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if (count > bestCount)
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return "id"; // Indonesian
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count = GetCount(text, AutoDetectWordsThai);
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if (count > 10 || count > bestCount)
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return "th"; // Thai
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count = GetCount(text, AutoDetectWordsKorean);
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if (count > 10 || count > bestCount)
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return "ko"; // Korean
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count = GetCount(text, AutoDetectWordsFinnish);
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if (count > bestCount)
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return "fi"; // Finnish
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count = GetCount(text, AutoDetectWordsRomanian1);
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if (count <= bestCount)
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count = GetCount(text, AutoDetectWordsRomanian2);
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if (count > bestCount)
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return "ro"; // Romanian
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count = GetCountContains(text, "シ", "ュ", "シン", "シ", "ン", "ユ");
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count += GetCountContains(text, "イ", "ン", "チ", "ェ", "ク", "ハ");
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count += GetCountContains(text, "シ", "ュ", "う", "シ", "ン", "サ");
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count += GetCountContains(text, "シ", "ュ", "シ", "ン", "だ", "う");
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if (count > bestCount * 2)
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return "ja"; // Japanese - not tested...
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count = GetCountContains(text, "是", "是早", "吧", "的", "爱", "上好");
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count += GetCountContains(text, "的", "啊", "好", "好", "亲", "的");
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count += GetCountContains(text, "谢", "走", "吧", "晚", "上", "好");
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count += GetCountContains(text, "来", "卡", "拉", "吐", "滚", "他");
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if (count > bestCount * 2)
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return "zh"; // Chinese (simplified) - not tested...
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return string.Empty;
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}
|
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public static string AutoDetectGoogleLanguage(Subtitle subtitle)
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{
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string languageId = AutoDetectGoogleLanguageOrNull(subtitle);
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if (languageId == null)
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languageId = "en";
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return languageId;
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}
|
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public static string AutoDetectGoogleLanguageOrNull(Subtitle subtitle)
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{
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var sb = new StringBuilder();
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foreach (Paragraph p in subtitle.Paragraphs)
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sb.AppendLine(p.Text);
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string languageId = AutoDetectGoogleLanguage(sb.ToString(), subtitle.Paragraphs.Count / 14);
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if (string.IsNullOrEmpty(languageId))
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languageId = null;
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return languageId;
|
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}
|
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|
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public static string AutoDetectLanguageName(string languageName, Subtitle subtitle)
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{
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if (string.IsNullOrEmpty(languageName))
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languageName = "en_US";
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int bestCount = subtitle.Paragraphs.Count / 14;
|
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var sb = new StringBuilder();
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foreach (Paragraph p in subtitle.Paragraphs)
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sb.AppendLine(p.Text);
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string text = sb.ToString();
|
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|
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List<string> dictionaryNames = Utilities.GetDictionaryLanguages();
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bool containsEnGb = false;
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bool containsEnUs = false;
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bool containsHrHr = false;
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bool containsSrLatn = false;
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foreach (string name in dictionaryNames)
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{
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if (name.Contains("[en_GB]"))
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containsEnGb = true;
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if (name.Contains("[en_US]"))
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containsEnUs = true;
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if (name.Contains("[hr_HR]"))
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containsHrHr = true;
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if (name.Contains("[sr-Latn]"))
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containsSrLatn = true;
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}
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|
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foreach (string name in dictionaryNames)
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{
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string shortName = string.Empty;
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int start = name.IndexOf('[');
|
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int end = name.IndexOf(']');
|
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if (start > 0 && end > start)
|
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{
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start++;
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shortName = name.Substring(start, end - start);
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}
|
||
|
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int count;
|
||
switch (shortName)
|
||
{
|
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case "da_DK":
|
||
count = GetCount(text, AutoDetectWordsDanish);
|
||
if (count > bestCount)
|
||
{
|
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int norwegianCount = GetCount(text, "ut", "deg", "meg", "merkelig", "mye", "spørre");
|
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int dutchCount = GetCount(text, AutoDetectWordsDutch);
|
||
if (norwegianCount < 2 && dutchCount < count)
|
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languageName = shortName;
|
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}
|
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break;
|
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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)
|
||
{
|
||
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";
|
||
}
|
||
}
|
||
break;
|
||
case "en_GB":
|
||
count = GetCount(text, AutoDetectWordsEnglish);
|
||
if (count > bestCount)
|
||
{
|
||
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";
|
||
}
|
||
}
|
||
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") + GetCount(thaiEncoding.GetString(buffer), "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), "من", "هل", "لا", "فى", "لقد", "ما") > 5)
|
||
{
|
||
if (GetCount(hewbrewEncoding.GetString(buffer), "אולי", "אולי", "אולי", "אולי", "טוב", "טוב") > 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
|
||
{
|
||
foreach (EncodingInfo ei in Encoding.GetEncodings())
|
||
{
|
||
if (ei.CodePage + ": " + ei.DisplayName == Configuration.Settings.General.DefaultEncoding &&
|
||
ei.Name != Encoding.UTF8.BodyName &&
|
||
ei.Name != Encoding.Unicode.BodyName)
|
||
{
|
||
encoding = ei.GetEncoding();
|
||
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;
|
||
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
|
||
encoding = Encoding.UTF32;
|
||
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;
|
||
}
|
||
else if (couldBeUtf8 && Configuration.Settings.General.DefaultEncoding == Encoding.UTF8.BodyName)
|
||
{ // 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") + GetCount(thaiEncoding.GetString(buffer), "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), "من", "هل", "لا", "فى", "لقد", "ما") > 5)
|
||
{
|
||
if (GetCount(hewbrewEncoding.GetString(buffer), "אולי", "אולי", "אולי", "אולי", "טוב", "טוב") > 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
|
||
{
|
||
}
|
||
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;
|
||
}
|
||
|
||
}
|
||
}
|