The Tor Browser: browser/components/translation/cld2/internal/compact_lang_det_hint

browser/components/translation/cld2/internal/compact_lang_det_hint_code.cc@6474c204b198 (annotated)

browser/components/translation/cld2/internal/compact_lang_det_hint_code.cc

Wed, 31 Dec 2014 06:09:35 +0100

author: Michael Schloh von Bennewitz <michael@schloh.com>
date: Wed, 31 Dec 2014 06:09:35 +0100
changeset 0: 6474c204b198
permissions: -rw-r--r--

Cloned upstream origin tor-browser at tor-browser-31.3.0esr-4.5-1-build1
revision ID fc1c9ff7c1b2defdbc039f12214767608f46423f for hacking purpose.

 // Copyright 2013 Google Inc. All Rights Reserved.
 //
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
 // You may obtain a copy of the License at
 //
 //     http://www.apache.org/licenses/LICENSE-2.0
 //
 // Unless required by applicable law or agreed to in writing, software
 // distributed under the License is distributed on an "AS IS" BASIS,
 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 // See the License for the specific language governing permissions and
 // limitations under the License.
 //
 // Author: dsites@google.com (Dick Sites)
 //
 #include "compact_lang_det_hint_code.h"
 #include <stdlib.h>     // for abs()
 #include <stdio.h>      // for sprintf()
 #include <string.h>     //
 #include "lang_script.h"
 #include "port.h"
 using namespace std;
 namespace CLD2 {
 static const int kCLDPriorEncodingWeight = 4;   // 100x more likely
 static const int kCLDPriorLanguageWeight = 8;   // 10000x more likely
 // Tables to map lang="..." language code lists to actual languages.
 // based on scraping and hand-edits, dsites June 2011
 // n = f(string, &a) gives list of n<=4 language pairs: primary, secondary
 // For close pairs like ms/id, more weight on TLD and lang=
 // Alternately, weaker boost but mark others of set as negative;
 // makes "neither" an easier result.
 // lang=en low weight 4
 // tld=lu boost lu maaybe 4. but lang= alwyas overcomes tld and encoding
 // (except maybe en)
 // TLD to separate, e.g., burundi from rwanda
 // Encoding lookup: OneLangProb array
 // TLD lookup:   tld OneLangProb pairs
 typedef struct {
   const char* const langtag;    // Lowercased, hyphen only lookup key
   const char* const langcode;   // Canonical language codes; two if ambiguous
   OneCLDLangPrior onelangprior1;
   OneCLDLangPrior onelangprior2;
 } LangTagLookup;
 typedef struct {
   const char* const tld;        // Lowercased, hyphen only lookup key
   OneCLDLangPrior onelangprior1;
   OneCLDLangPrior onelangprior2;
 } TLDLookup;
 #define W2 (2 << 10)            // 3**2 = 10x more likely
 #define W4 (4 << 10)            // 3**4 = 100x more likely
 #define W6 (6 << 10)            // 3**6 = 1000x more likely
 #define W8 (8 << 10)            // 3**8 = 10K x more likely
 #define W10 (10 << 10)          // 3**10 = 100K x more likely
 #define W12 (12 << 10)          // 3**12 = 1M x more likely
 // TODO: more about ba hr sr sr-ME and sl
 // Temporary state of affairs:
 //   BOSNIAN CROATIAN MONTENEGRIN SERBIAN detecting just CROATIAN SERBIAN
 // Eventually, we want to do all four, but it requires a CLD change to handle
 // up to six languages per quadgram.
 // Close pairs boost one of pair, demote other.
 //   Statistically close pairs:
 //   INDONESIAN/MALAY difficult to distinguish -- extra word-based lookups used
 //
 //   INDONESIAN MALAY coef=0.4698        Problematic w/o extra words
 //   TIBETAN DZONGKHA coef=0.4571
 //   CZECH SLOVAK coef=0.4273
 //   NORWEGIAN NORWEGIAN_N coef=0.4182
 //
 //   HINDI MARATHI coef=0.3795
 //   ZULU XHOSA coef=0.3716
 //
 //   DANISH NORWEGIAN coef=0.3672        Usually OK
 //   BIHARI HINDI coef=0.3668            Usually OK
 //   ICELANDIC FAROESE coef=0.3519       Usually OK
 //
 // Table to look up lang= tags longer than three characters
 // Overrides table below, which is truncated at first hyphen
 // In alphabetical order for binary search
 static const int kCLDTable1Size = 213;
 static const LangTagLookup kCLDLangTagsHintTable1[kCLDTable1Size] = {
   {"abkhazian", "ab", ABKHAZIAN + W10, 0},
   {"afar", "aa", AFAR + W10, 0},
   {"afrikaans", "af", AFRIKAANS + W10, 0},
   {"akan", "ak", AKAN + W10, 0},
   {"albanian", "sq", ALBANIAN + W10, 0},
   {"am-am", "hy", ARMENIAN + W10, 0},        // 1:2 Armenian, not ambiguous
   {"amharic", "am", AMHARIC + W10, 0},
   {"arabic", "ar", ARABIC + W10, 0},
   {"argentina", "es", SPANISH + W10, 0},
   {"armenian", "hy", ARMENIAN + W10, 0},
   {"assamese", "as", ASSAMESE + W10, 0},
   {"aymara", "ay", AYMARA + W10, 0},
   {"azerbaijani", "az", AZERBAIJANI + W10, 0},
   {"bangla", "bn", BENGALI + W10, 0},
   {"bashkir", "ba", BASHKIR + W10, 0},
   {"basque", "eu", BASQUE + W10, 0},
   {"belarusian", "be", BELARUSIAN + W10, 0},
   {"bengali", "bn", BENGALI + W10, 0},
   {"bihari", "bh", BIHARI + W10, HINDI - W4},
   {"bislama", "bi", BISLAMA + W10, 0},
   {"bosnian", "bs", BOSNIAN + W10, 0},      // Bosnian => Bosnian
   {"br-br", "pt", PORTUGUESE + W10, 0},     // 1:2 Portuguese, not ambiguous
   {"br-fr", "br", BRETON + W10, 0},         // 1:2 Breton, not ambiguous
   {"breton", "br", BRETON + W10, 0},
   {"bulgarian", "bg", BULGARIAN + W10, 0},
   {"burmese", "my", BURMESE + W10, 0},      // Myanmar
   {"catalan", "ca", CATALAN + W10, 0},
   {"cherokee", "chr", CHEROKEE + W10, 0},
   {"chichewa", "ny", NYANJA + W10, 0},
   {"chinese", "zh", CHINESE + W10, 0},
   {"chinese-t", "zhT", CHINESE_T + W10, 0},
   {"chineset", "zhT", CHINESE_T + W10, 0},
   {"corsican", "co", CORSICAN + W10, 0},
   {"cpf-hat", "ht", HAITIAN_CREOLE + W10, 0}, // Creole, French-based
   {"croatian", "hr", CROATIAN + W10, 0},
   {"czech", "cs", CZECH + W10, SLOVAK - W4},
   {"danish", "da", DANISH + W10, NORWEGIAN - W4},
   {"deutsch", "de", GERMAN + W10, 0},
   {"dhivehi", "dv", DHIVEHI + W10, 0},
   {"dutch", "nl", DUTCH + W10, 0},
   {"dzongkha", "dz", DZONGKHA + W10,  TIBETAN - W4},
   {"ell-gr", "el", GREEK + W10, 0},
   {"english", "en", ENGLISH + W4, 0},
   {"esperanto", "eo", ESPERANTO + W10, 0},
   {"estonian", "et", ESTONIAN + W10, 0},
   {"euc-jp", "ja", JAPANESE + W10, 0},       // Japanese encoding
   {"euc-kr", "ko", KOREAN + W10, 0},         // Korean encoding
   {"faroese", "fo", FAROESE + W10, ICELANDIC - W4},
   {"fijian", "fj", FIJIAN + W10, 0},
   {"finnish", "fi", FINNISH + W10, 0},
   {"fran", "fr", FRENCH + W10, 0},            // Truncated at non-ASCII
   {"francais", "fr", FRENCH + W10, 0},
   {"french", "fr", FRENCH + W10, 0},
   {"frisian", "fy", FRISIAN + W10, 0},
   {"ga-es", "gl", GALICIAN + W10, 0},         // 1:2 Galician, not ambiguous
   {"galician", "gl", GALICIAN + W10, 0},
   {"ganda", "lg", GANDA + W10, 0},
   {"georgian", "ka", GEORGIAN + W10, 0},
   {"german", "de", GERMAN + W10, 0},
   {"greek", "el", GREEK + W10, 0},
   {"greenlandic", "kl", GREENLANDIC + W10, 0},
   {"guarani", "gn", GUARANI + W10, 0},
   {"gujarati", "gu", GUJARATI + W10, 0},
   {"haitian_creole", "ht", HAITIAN_CREOLE + W10, 0},
   {"hausa", "ha", HAUSA + W10, 0},
   {"hawaiian", "haw", HAWAIIAN + W10, 0},
   {"hebrew", "iw", HEBREW + W10, 0},
   {"hindi", "hi", HINDI + W10, MARATHI - W4},
   {"hn-in", "hi", HINDI + W10, MARATHI - W4},
   {"hungarian", "hu", HUNGARIAN + W10, 0},
   {"icelandic", "is", ICELANDIC + W10, FAROESE - W4},
   {"igbo", "ig", IGBO + W10, 0},
   {"indonesian", "id", INDONESIAN + W10, MALAY - W4},
   {"interlingua", "ia", INTERLINGUA + W10, 0},
   {"interlingue", "ie", INTERLINGUE + W10, 0},
   // 1:2 iu-Cans ik-Latn
   {"inuktitut", "iu,ik", INUKTITUT + W10, INUPIAK + W10}, // 1:2
   {"inupiak", "ik,iu", INUPIAK + W10, INUKTITUT + W10},   // 1:2
   {"ir-ie", "ga", IRISH + W10, 0},          // Irish
   {"irish", "ga", IRISH + W10, 0},
   {"italian", "it", ITALIAN + W10, 0},
   {"ja-euc", "ja", JAPANESE + W10, 0},      // Japanese encoding
   {"jan-jp", "ja", JAPANESE + W10, 0},      // Japanese encoding
   {"japanese", "ja", JAPANESE + W10, 0},
   {"javanese", "jw", JAVANESE + W10, 0},
   {"kannada", "kn", KANNADA + W10, 0},
   {"kashmiri", "ks", KASHMIRI + W10, 0},
   {"kazakh", "kk", KAZAKH + W10, 0},
   {"khasi", "kha", KHASI + W10, 0},
   {"khmer", "km", KHMER + W10, 0},
   {"kinyarwanda", "rw", KINYARWANDA + W10, 0},
   {"klingon", "tlh", X_KLINGON + W10, 0},
   {"korean", "ko", KOREAN + W10, 0},
   {"kurdish", "ku", KURDISH + W10, 0},
   {"kyrgyz", "ky", KYRGYZ + W10, 0},
   {"laothian", "lo", LAOTHIAN + W10, 0},
   {"latin", "la", LATIN + W10, 0},
   {"latvian", "lv", LATVIAN + W10, 0},
   {"limbu", "sit", LIMBU + W10, 0},
   {"lingala", "ln", LINGALA + W10, 0},
   {"lithuanian", "lt", LITHUANIAN + W10, 0},
   {"luxembourgish", "lb", LUXEMBOURGISH + W10, 0},
   {"macedonian", "mk", MACEDONIAN + W10, 0},
   {"malagasy", "mg", MALAGASY + W10, 0},
   {"malay", "ms", MALAY + W10, INDONESIAN - W4},
   {"malayalam", "ml", MALAYALAM + W10, 0},
   {"maltese", "mt", MALTESE + W10, 0},
   {"manx", "gv", MANX + W10, 0},
   {"maori", "mi", MAORI + W10, 0},
   {"marathi", "mr", MARATHI + W10, HINDI - W4},
   {"mauritian_creole", "mfe", MAURITIAN_CREOLE + W10, 0},
   {"moldavian", "mo", ROMANIAN + W10, 0},
   {"mongolian", "mn", MONGOLIAN + W10, 0},
   {"montenegrin", "sr-me", MONTENEGRIN + W10, 0},
   {"myanmar", "my", BURMESE + W10, 0},      // Myanmar
   {"nauru", "na", NAURU + W10, 0},
   {"ndebele", "nr", NDEBELE + W10, 0},
   {"nepali", "ne", NEPALI + W10, 0},
   {"no-bok", "no", NORWEGIAN + W10, NORWEGIAN_N - W4},       // Bokmaal
   {"no-bokmaal", "no", NORWEGIAN + W10, NORWEGIAN_N - W4},
   {"no-nb", "no", NORWEGIAN + W10, NORWEGIAN_N - W4},        // Bokmaal
   {"no-no", "no", NORWEGIAN + W10, NORWEGIAN_N - W4},
   {"no-nyn", "nn", NORWEGIAN_N + W10, NORWEGIAN - W4},       // Nynorsk
   {"no-nynorsk", "nn", NORWEGIAN_N + W10, NORWEGIAN - W4},
   {"norwegian", "no", NORWEGIAN + W10, NORWEGIAN_N - W4},
   {"norwegian_n", "nn", NORWEGIAN_N + W10, NORWEGIAN - W4},
   {"nyanja", "ny", NYANJA + W10, 0},
   {"occitan", "oc", OCCITAN + W10, 0},
   {"oriya", "or", ORIYA + W10, 0},
   {"oromo", "om", OROMO + W10, 0},
   {"parsi", "fa", PERSIAN + W10, 0},
   {"pashto", "ps", PASHTO + W10, 0},
   {"pedi", "nso", PEDI + W10, 0},
   {"persian", "fa", PERSIAN + W10, 0},
   {"polish", "pl", POLISH + W10, 0},
   {"polska", "pl", POLISH + W10, 0},
   {"polski", "pl", POLISH + W10, 0},
   {"portugu", "pt", PORTUGUESE + W10, 0},     // Truncated at non-ASCII
   {"portuguese", "pt", PORTUGUESE + W10, 0},
   {"punjabi", "pa", PUNJABI + W10, 0},
   {"quechua", "qu", QUECHUA + W10, 0},
   {"rhaeto_romance", "rm", RHAETO_ROMANCE + W10, 0},
   {"romanian", "ro", ROMANIAN + W10, 0},
   {"rundi", "rn", RUNDI + W10, 0},
   {"russian", "ru", RUSSIAN + W10, 0},
   {"samoan", "sm", SAMOAN + W10, 0},
   {"sango", "sg", SANGO + W10, 0},
   {"sanskrit", "sa", SANSKRIT + W10, 0},
   {"scots", "sco", SCOTS + W10, ENGLISH - W4},
   {"scots_gaelic", "gd", SCOTS_GAELIC + W10, 0},
   {"serbian", "sr", SERBIAN + W10, 0},
   {"seselwa", "crs", SESELWA + W10, 0},
   {"sesotho", "st", SESOTHO + W10, 0},
   {"shift-jis", "ja", JAPANESE + W10, 0},   // Japanese encoding
   {"shift-js", "ja", JAPANESE + W10, 0},    // Japanese encoding
   {"shona", "sn", SHONA + W10, 0},
   {"si-lk", "si", SINHALESE + W10, 0},      // 1:2 Sri Lanka, not ambiguous
   {"si-si", "sl", SLOVENIAN + W10, 0},      // 1:2 Slovenia, not ambiguous
   {"si-sl", "sl", SLOVENIAN + W10, 0},      // 1:2 Slovenia, not ambiguous
   {"sindhi", "sd", SINDHI + W10, 0},
   {"sinhalese", "si", SINHALESE + W10, 0},
   {"siswant", "ss", SISWANT + W10, 0},
   {"sit-np", "sit", LIMBU + W10, 0},
   {"slovak", "sk", SLOVAK + W10, CZECH - W4},
   {"slovenian", "sl", SLOVENIAN + W10, 0},
   {"somali", "so", SOMALI + W10, 0},
   {"spanish", "es", SPANISH + W10, 0},
   {"sr-me", "sr-me", MONTENEGRIN + W10, 0}, // Montenegrin => Montenegrin
   {"sundanese", "su", SUNDANESE + W10, 0},
   {"suomi", "fi", FINNISH + W10, 0},        // Finnish
   {"swahili", "sw", SWAHILI + W10, 0},
   {"swedish", "sv", SWEDISH + W10, 0},
   {"syriac", "syr", SYRIAC + W10, 0},
   {"tagalog", "tl", TAGALOG + W10, 0},
   {"tajik", "tg", TAJIK + W10, 0},
   {"tamil", "ta", TAMIL + W10, 0},
   {"tatar", "tt", TATAR + W10, 0},
   {"tb-tb", "bo", TIBETAN + W10, DZONGKHA - W4},        // Tibet
   {"tchinese", "zhT", CHINESE_T + W10, 0},
   {"telugu", "te", TELUGU + W10, 0},
   {"thai", "th", THAI + W10, 0},
   {"tibetan", "bo", TIBETAN + W10, DZONGKHA - W4},
   {"tigrinya", "ti", TIGRINYA + W10, 0},
   {"tonga", "to", TONGA + W10, 0},
   {"tsonga", "ts", TSONGA + W10, 0},
   {"tswana", "tn", TSWANA + W10, 0},
   {"tt-ru", "tt", TATAR + W10, 0},
   {"tur-tr", "tr", TURKISH + W10, 0},
   {"turkish", "tr", TURKISH + W10, 0},
   {"turkmen", "tk", TURKMEN + W10, 0},
   {"uighur", "ug", UIGHUR + W10, 0},
   {"ukrainian", "uk", UKRAINIAN + W10, 0},
   {"urdu", "ur", URDU + W10, 0},
   {"uzbek", "uz", UZBEK + W10, 0},
   {"venda", "ve", VENDA + W10, 0},
   {"vietnam", "vi", VIETNAMESE + W10, 0},
   {"vietnamese", "vi", VIETNAMESE + W10, 0},
   {"volapuk", "vo", VOLAPUK + W10, 0},
   {"welsh", "cy", WELSH + W10, 0},
   {"wolof", "wo", WOLOF + W10, 0},
   {"xhosa", "xh", XHOSA + W10, ZULU - W4},
   {"yiddish", "yi", YIDDISH + W10, 0},
   {"yoruba", "yo", YORUBA + W10, 0},
   {"zh-classical", "zhT", CHINESE_T + W10, 0},
   {"zh-cn", "zh", CHINESE + W10, 0},
   {"zh-hans", "zh", CHINESE + W10, 0},
   {"zh-hant", "zhT", CHINESE_T + W10, 0},
   {"zh-hk", "zhT", CHINESE_T + W10, 0},
   {"zh-min-nan", "zhT", CHINESE_T + W10, 0}, // Min Nan => ChineseT
   {"zh-sg", "zhT", CHINESE_T + W10, 0},
   {"zh-tw", "zhT", CHINESE_T + W10, 0},
   {"zh-yue", "zh", CHINESE + W10, 0},       // Yue (Cantonese) => Chinese
   {"zhuang", "za", ZHUANG + W10, 0},
   {"zulu", "zu", ZULU + W10, XHOSA - W4},
 };
 // Table to look up lang= tags of two/three characters after truncate at hyphen
 // In alphabetical order for binary search
 static const int kCLDTable2Size = 257;
 static const LangTagLookup kCLDLangTagsHintTable2[kCLDTable2Size] = {
   {"aa", "aa", AFAR + W10, 0},
   {"ab", "ab", ABKHAZIAN + W10, 0},
   {"af", "af", AFRIKAANS + W10, 0},
   {"ak", "ak", AKAN + W10, 0},
   {"al", "sq", ALBANIAN + W10, 0},          // Albania
   {"am", "am,hy", AMHARIC + W10, ARMENIAN + W10},  // 1:2 Amharic Armenian
   {"ar", "ar", ARABIC + W10, 0},
   {"ara", "ar", ARABIC + W10, 0},
   {"arm", "hy", ARMENIAN + W10, 0},         // Armenia
   {"arz", "ar", ARABIC + W10, 0},           // Egyptian Arabic
   {"as", "as", ASSAMESE + W10, 0},
   {"at", "de", GERMAN + W10, 0},            // Austria
   {"au", "de", GERMAN + W10, 0},            // Austria
   {"ay", "ay", AYMARA + W10, 0},
   {"az", "az", AZERBAIJANI + W10, 0},
   {"aze", "az", AZERBAIJANI + W10, 0},
   {"ba", "ba,bs", BASHKIR + W10, BOSNIAN + W10},  // 1:2  Bashkir Bosnia
   {"be", "be", BELARUSIAN + W10, 0},
   {"bel", "be", BELARUSIAN + W10, 0},
   {"bg", "bg", BULGARIAN + W10, 0},
   {"bh", "bh", BIHARI + W10, HINDI - W4},
   {"bi", "bi", BISLAMA + W10, 0},
   {"big", "zhT", CHINESE_T + W10, 0},        // Big5 encoding
   {"bm", "ms", MALAY + W10, INDONESIAN - W4},             // Bahasa Malaysia
   {"bn", "bn", BENGALI + W10, 0},
   {"bo", "bo", TIBETAN + W10, DZONGKHA - W4},
   // 1:2 Breton, Brazil country code, both Latn .br TLD enough for pt to win
   {"br", "br,pt", BRETON + W10, PORTUGUESE + W8}, // 1:2 Breton, Brazil
   {"bs", "bs", BOSNIAN + W10, 0},           // Bosnian => Bosnian
   {"ca", "ca", CATALAN + W10, 0},
   {"cat", "ca", CATALAN + W10, 0},
   {"ch", "de,fr", GERMAN + W10, FRENCH + W10},    // 1:2 Switzerland
   {"chn", "zh", CHINESE + W10, 0},
   {"chr", "chr", CHEROKEE + W10, 0},
   {"ckb", "ku", KURDISH + W10, 0},          // Central Kurdish
   {"cn", "zh,zhT", CHINESE + W6, CHINESE_T + W4},   // Ambiguous, so weaker.
                                                 // Offset by 2 so that TLD=tw or
                                                 // enc=big5 will put zhT ahead
   {"co", "co", CORSICAN + W10, 0},
   {"cro", "hr", CROATIAN + W10, 0},          // Croatia
   {"crs", "crs", SESELWA + W10, 0},
   {"cs", "cs", CZECH + W10, SLOVAK - W4},
   {"ct", "ca", CATALAN + W10, 0},
   {"cy", "cy", WELSH + W10, 0},
   {"cym", "cy", WELSH + W10, 0},
   {"cz", "cs", CZECH + W10, SLOVAK - W4},
   {"da", "da", DANISH + W10, NORWEGIAN - W4},
   {"dan", "da", DANISH + W10, NORWEGIAN - W4},
   {"de", "de", GERMAN + W10, 0},
   {"deu", "de", GERMAN + W10, 0},
   {"div", "dv", DHIVEHI + W10, 0},
   {"dk", "da", DANISH + W10, NORWEGIAN - W4},            // Denmark
   {"dut", "nl", DUTCH + W10, 0},            // Dutch
   {"dv", "dv", DHIVEHI + W10, 0},
   {"dz", "dz", DZONGKHA + W10, TIBETAN - W4},
   {"ee", "et", ESTONIAN + W10, 0},          // Estonia
   {"eg", "ar", ARABIC + W10, 0},            // Egypt
   {"el", "el", GREEK + W10, 0},
   {"en", "en", ENGLISH + W4, 0},
   {"eng", "en", ENGLISH + W4, 0},
   {"eo", "eo", ESPERANTO + W10, 0},
   {"er", "ur", URDU + W10, 0},              // "Erdu"
   {"es", "es", SPANISH + W10, 0},
   {"esp", "es", SPANISH + W10, 0},
   {"est", "et", ESTONIAN + W10, 0},
   {"et", "et", ESTONIAN + W10, 0},
   {"eu", "eu", BASQUE + W10, 0},
   {"fa", "fa", PERSIAN + W10, 0},
   {"far", "fa", PERSIAN + W10, 0},
   {"fi", "fi", FINNISH + W10, 0},
   {"fil", "tl", TAGALOG + W10, 0},          // Philippines
   {"fj", "fj", FIJIAN + W10, 0},
   {"fo", "fo", FAROESE + W10, ICELANDIC - W4},
   {"fr", "fr", FRENCH + W10, 0},
   {"fra", "fr", FRENCH + W10, 0},
   {"fre", "fr", FRENCH + W10, 0},
   {"fy", "fy", FRISIAN + W10, 0},
   {"ga", "ga,gl", IRISH + W10, GALICIAN + W10},       // 1:2 Irish, Galician
   {"gae", "gd,ga", SCOTS_GAELIC + W10, IRISH + W10},  // 1:2 Gaelic, either
   {"gal", "gl", GALICIAN + W10, 0},
   {"gb", "zh", CHINESE + W10, 0},           // GB2312 encoding
   {"gbk", "zh", CHINESE + W10, 0},          // GBK encoding
   {"gd", "gd", SCOTS_GAELIC + W10, 0},
   {"ge", "ka", GEORGIAN + W10, 0},          // Georgia
   {"geo", "ka", GEORGIAN + W10, 0},
   {"ger", "de", GERMAN + W10, 0},
   {"gl", "gl", GALICIAN + W10, 0},          // Also Greenland; hard to confuse
   {"gn", "gn", GUARANI + W10, 0},
   {"gr", "el", GREEK + W10, 0},             // Greece
   {"gu", "gu", GUJARATI + W10, 0},
   {"gv", "gv", MANX + W10, 0},
   {"ha", "ha", HAUSA + W10, 0},
   {"hat", "ht", HAITIAN_CREOLE + W10, 0},   // Haiti
   {"haw", "haw", HAWAIIAN + W10, 0},
   {"hb", "iw", HEBREW + W10, 0},
   {"he", "iw", HEBREW + W10, 0},
   {"heb", "iw", HEBREW + W10, 0},
   {"hi", "hi", HINDI + W10, MARATHI - W4},
   {"hk", "zhT", CHINESE_T + W10, 0},          // Hong Kong
   {"hr", "hr", CROATIAN + W10, 0},
   {"ht", "ht", HAITIAN_CREOLE + W10, 0},
   {"hu", "hu", HUNGARIAN + W10, 0},
   {"hun", "hu", HUNGARIAN + W10, 0},
   {"hy", "hy", ARMENIAN + W10, 0},
   {"ia", "ia", INTERLINGUA + W10, 0},
   {"ice", "is", ICELANDIC + W10, FAROESE - W4},        // Iceland
   {"id", "id", INDONESIAN + W10, MALAY - W4},
   {"ids", "id", INDONESIAN + W10, MALAY - W4},
   {"ie", "ie", INTERLINGUE + W10, 0},
   {"ig", "ig", IGBO + W10, 0},
   // 1:2 iu-Cans ik-Latn
   {"ik", "ik,iu", INUPIAK + W10, INUKTITUT + W10},        // 1:2
   {"in", "id", INDONESIAN + W10, MALAY - W4},
   {"ind", "id", INDONESIAN + W10, MALAY - W4},       // Indonesia
   {"inu", "iu,ik", INUKTITUT + W10, INUPIAK + W10},       // 1:2
   {"is", "is", ICELANDIC + W10, FAROESE - W4},
   {"it", "it", ITALIAN + W10, 0},
   {"ita", "it", ITALIAN + W10, 0},
   {"iu", "iu,ik", INUKTITUT + W10, INUPIAK + W10},        // 1:2
   {"iw", "iw", HEBREW + W10, 0},
   {"ja", "ja", JAPANESE + W10, 0},
   {"jp", "ja", JAPANESE + W10, 0},          // Japan
   {"jpn", "ja", JAPANESE + W10, 0},
   {"jv", "jw", JAVANESE + W10, 0},
   {"jw", "jw", JAVANESE + W10, 0},
   {"ka", "ka", GEORGIAN + W10, 0},
   {"kc", "qu", QUECHUA + W10, 0},           // (K)Quechua
   {"kg", "ky", KYRGYZ + W10, 0},            // Kyrgyzstan
   {"kh", "km", KHMER + W10, 0},             // Country code Khmer (Cambodia)
   {"kha", "kha", KHASI + W10, 0},
   {"kk", "kk", KAZAKH + W10, 0},            // Kazakh
   {"kl", "kl", GREENLANDIC + W10, 0},
   {"km", "km", KHMER + W10, 0},
   {"kn", "kn", KANNADA + W10, 0},
   {"ko", "ko", KOREAN + W10, 0},
   {"kor", "ko", KOREAN + W10, 0},
   {"kr", "ko", KOREAN + W10, 0},            // Country code Korea
   {"ks", "ks", KASHMIRI + W10, 0},
   {"ksc", "ko", KOREAN + W10, 0},           // KSC encoding
   {"ku", "ku", KURDISH + W10, 0},
   {"ky", "ky", KYRGYZ + W10, 0},
   {"kz", "kk", KAZAKH + W10, 0},            // Kazakhstan
   {"la", "la", LATIN + W10, 0},
   {"lao", "lo", LAOTHIAN + W10, 0},         // Laos
   {"lb", "lb", LUXEMBOURGISH + W10, 0},
   {"lg", "lg", GANDA + W10, 0},
   {"lit", "lt", LITHUANIAN + W10, 0},
   {"ln", "ln", LINGALA + W10, 0},
   {"lo", "lo", LAOTHIAN + W10, 0},
   {"lt", "lt", LITHUANIAN + W10, 0},
   {"ltu", "lt", LITHUANIAN + W10, 0},
   {"lv", "lv", LATVIAN + W10, 0},
   {"mfe", "mfe", MAURITIAN_CREOLE + W10, 0},
   {"mg", "mg", MALAGASY + W10, 0},
   {"mi", "mi", MAORI + W10, 0},
   {"mk", "mk", MACEDONIAN + W10, 0},
   {"ml", "ml", MALAYALAM + W10, 0},
   {"mn", "mn", MONGOLIAN + W10, 0},
   {"mo", "mo", ROMANIAN + W10, 0},
   {"mon", "mn", MONGOLIAN + W10, 0},        // Mongolian
   {"mr", "mr", MARATHI + W10, HINDI - W4},
   {"ms", "ms", MALAY + W10, INDONESIAN - W4},
   {"mt", "mt", MALTESE + W10, 0},
   {"mx", "es", SPANISH + W10, 0},           // Mexico
   {"my", "my,ms", BURMESE + W10, MALAY + W10}, // Myanmar, Malaysia
   {"na", "na", NAURU + W10, 0},
   {"nb", "no", NORWEGIAN + W10, NORWEGIAN_N - W4},
   {"ne", "ne", NEPALI + W10, 0},
   {"nl", "nl", DUTCH + W10, 0},
   {"nn", "nn", NORWEGIAN_N + W10, NORWEGIAN - W4},
   {"no", "no", NORWEGIAN + W10, NORWEGIAN_N - W4},
   {"nr", "nr", NDEBELE + W10, 0},
   {"nso", "nso", PEDI + W10, 0},
   {"ny", "ny", NYANJA + W10, 0},
   {"oc", "oc", OCCITAN + W10, 0},
   {"om", "om", OROMO + W10, 0},
   {"or", "or", ORIYA + W10, 0},
   {"pa", "pa,ps", PUNJABI + W10, PASHTO + W10},   // 1:2 pa-Guru ps-Arab
   {"per", "fa", PERSIAN + W10, 0},
   {"ph", "tl", TAGALOG + W10, 0},           // Philippines
   {"pk", "ur", URDU + W10, 0},              // Pakistan
   {"pl", "pl", POLISH + W10, 0},
   {"pnb", "pa", PUNJABI + W10, 0},          // Western Punjabi
   {"pol", "pl", POLISH + W10, 0},
   {"por", "pt", PORTUGUESE + W10, 0},
   {"ps", "ps", PASHTO + W10, 0},
   {"pt", "pt", PORTUGUESE + W10, 0},
   {"ptg", "pt", PORTUGUESE + W10, 0},
   {"qc", "fr", FRENCH + W10, 0},            // Quebec "country" code
   {"qu", "qu", QUECHUA + W10, 0},
   {"rm", "rm", RHAETO_ROMANCE + W10, 0},
   {"rn", "rn", RUNDI + W10, 0},
   {"ro", "ro", ROMANIAN + W10, 0},
   {"rs", "sr", SERBIAN + W10, 0},           // Serbia country code
   {"ru", "ru", RUSSIAN + W10, 0},
   {"rus", "ru", RUSSIAN + W10, 0},
   {"rw", "rw", KINYARWANDA + W10, 0},
   {"sa", "sa", SANSKRIT + W10, 0},
   {"sco", "sco", SCOTS + W10, ENGLISH - W4},
   {"sd", "sd", SINDHI + W10, 0},
   {"se", "sv", SWEDISH + W10, 0},
   {"sg", "sg", SANGO + W10, 0},
   {"si", "si,sl", SINHALESE + W10, SLOVENIAN + W10},  // 1:2 Sinhalese, Slovinia
   {"sk", "sk", SLOVAK + W10, CZECH - W4},
   {"sl", "sl", SLOVENIAN + W10, 0},
   {"slo", "sl", SLOVENIAN + W10, 0},
   {"sm", "sm", SAMOAN + W10, 0},
   {"sn", "sn", SHONA + W10, 0},
   {"so", "so", SOMALI + W10, 0},
   {"sp", "es", SPANISH + W10, 0},
   {"sq", "sq", ALBANIAN + W10, 0},
   {"sr", "sr", SERBIAN + W10, 0},
   {"srb", "sr", SERBIAN + W10, 0},
   {"srl", "sr", SERBIAN + W10, 0},          // Serbian Latin
   {"srp", "sr", SERBIAN + W10, 0},
   {"ss", "ss", SISWANT + W10, 0},
   {"st", "st", SESOTHO + W10, 0},
   {"su", "su", SUNDANESE + W10, 0},
   {"sv", "sv", SWEDISH + W10, 0},
   {"sve", "sv", SWEDISH + W10, 0},
   {"sw", "sw", SWAHILI + W10, 0},
   {"swe", "sv", SWEDISH + W10, 0},
   {"sy", "syr", SYRIAC + W10, 0},
   {"syr", "syr", SYRIAC + W10, 0},
   {"ta", "ta", TAMIL + W10, 0},
   {"te", "te", TELUGU + W10, 0},
   {"tg", "tg", TAJIK + W10, 0},
   {"th", "th", THAI + W10, 0},
   {"ti", "ti,bo", TIGRINYA + W10, TIBETAN + W10},    // 1:2 Tigrinya, Tibet
   {"tj", "tg", TAJIK + W10, 0},             // Tajikistan
   {"tk", "tk", TURKMEN + W10, 0},
   {"tl", "tl", TAGALOG + W10, 0},
   {"tlh", "tlh", X_KLINGON + W10, 0},
   {"tn", "tn", TSWANA + W10, 0},
   {"to", "to", TONGA + W10, 0},
   {"tr", "tr", TURKISH + W10, 0},
   {"ts", "ts", TSONGA + W10, 0},
   {"tt", "tt", TATAR + W10, 0},
   {"tw", "ak,zhT", AKAN + W10, CHINESE_T + W10},   // 1:2 Twi => Akan, Taiwan
   {"twi", "ak", AKAN + W10, 0},             // Twi => Akan
   {"ua", "uk", UKRAINIAN + W10, 0},         // Ukraine
   {"ug", "ug", UIGHUR + W10, 0},
   {"uk", "uk", UKRAINIAN + W10, 0},
   {"ur", "ur", URDU + W10, 0},
   {"uz", "uz", UZBEK + W10, 0},
   {"va", "ca", CATALAN + W10, 0},           // Valencia => Catalan
   {"val", "ca", CATALAN + W10, 0},          // Valencia => Catalan
   {"ve", "ve", VENDA + W10, 0},
   {"vi", "vi", VIETNAMESE + W10, 0},
   {"vie", "vi", VIETNAMESE + W10, 0},
   {"vn", "vi", VIETNAMESE + W10, 0},
   {"vo", "vo", VOLAPUK + W10, 0},
   {"wo", "wo", WOLOF + W10, 0},
   {"xh", "xh", XHOSA + W10, ZULU - W4},
   {"xho", "xh", XHOSA + W10, ZULU - W4},
   {"yi", "yi", YIDDISH + W10, 0},
   {"yo", "yo", YORUBA + W10, 0},
   {"za", "za", ZHUANG + W10, 0},
   {"zh", "zh", CHINESE + W10, 0},
   {"zht", "zhT", CHINESE_T + W10, 0},
   {"zu", "zu", ZULU + W10, XHOSA - W4},
 };
 // Possibly map to tl:
 // -LangTags tl-Latn /7val.com/ ,bcl 2 Central Bicolano
 // -LangTags tl-Latn /7val.com/ ,ceb 6 Cebuano
 // -LangTags tl-Latn /7val.com/ ,war 1 Waray
 // Table to look up country TLD (no general TLD)
 // In alphabetical order for binary search
 static const int kCLDTable3Size = 181;
 static const TLDLookup kCLDTLDHintTable[kCLDTable3Size] = {
   {"ac", JAPANESE + W2, 0},
   {"ad", CATALAN + W4, 0},
   {"ae", ARABIC + W4, 0},
   {"af", PASHTO + W4, PERSIAN + W4},
   {"ag", GERMAN + W2, 0},                // meager
   // {"ai", 0, 0},                          // meager
   {"al", ALBANIAN + W4, 0},
   {"am", ARMENIAN + W4, 0},
   {"an", DUTCH + W4, 0},                 // meager
   {"ao", PORTUGUESE + W4, 0},
   // {"aq", 0, 0},                          // meager
   {"ar", SPANISH + W4, 0},
   // {"as", 0, 0},
   {"at", GERMAN + W4, 0},
   {"au", ENGLISH + W2, 0},
   {"aw", DUTCH + W4, 0},
   {"ax", SWEDISH + W4, 0},
   {"az", AZERBAIJANI + W4, 0},
   {"ba", BOSNIAN + W8, CROATIAN - W4},
   // {"bb", 0, 0},
   {"bd", BENGALI + W4, 0},
   {"be", DUTCH + W4, FRENCH + W4},
   {"bf", FRENCH + W4, 0},
   {"bg", BULGARIAN + W4, 0},
   {"bh", ARABIC + W4, 0},
   {"bi", RUNDI + W4, FRENCH + W4},
   {"bj", FRENCH + W4, 0},
   {"bm", ENGLISH + W2, 0},
   {"bn", MALAY + W4, INDONESIAN - W4},
   {"bo", SPANISH + W4, AYMARA + W2},   // and GUARANI QUECHUA
   {"br", PORTUGUESE + W4, 0},
   // {"bs", 0, 0},
   {"bt", DZONGKHA + W10, TIBETAN - W10},      // Strong presumption of Dzongha
   {"bw", TSWANA + W4, 0},
   {"by", BELARUSIAN + W4, 0},
   // {"bz", 0, 0},
   {"ca", FRENCH + W4, ENGLISH + W2},
   {"cat", CATALAN + W4, 0},
   {"cc", 0, 0},
   {"cd", FRENCH + W4, 0},
   {"cf", FRENCH + W4, 0},
   {"cg", FRENCH + W4, 0},
   {"ch", GERMAN + W4, FRENCH + W4},
   {"ci", FRENCH + W4, 0},
   // {"ck", 0, 0},
   {"cl", SPANISH + W4, 0},
   {"cm", FRENCH + W4, 0},
   {"cn", CHINESE + W4, 0},
   {"co", SPANISH + W4, 0},
   {"cr", SPANISH + W4, 0},
   {"cu", SPANISH + W4, 0},
   {"cv", PORTUGUESE + W4, 0},
   // {"cx", 0, 0},
   {"cy", GREEK + W4, TURKISH + W4},
   {"cz", CZECH + W4, SLOVAK - W4},
   {"de", GERMAN + W4, 0},
   {"dj", 0, 0},
   {"dk", DANISH + W4, NORWEGIAN - W4},
   {"dm", 0, 0},
   {"do", SPANISH + W4, 0},
   {"dz", FRENCH + W4, ARABIC + W4},
   {"ec", SPANISH + W4, 0},
   {"ee", ESTONIAN + W4, 0},
   {"eg", ARABIC + W4, 0},
   {"er", AFAR + W4, 0},
   {"es", SPANISH + W4, 0},
   {"et", AMHARIC + W4, AFAR + W4},
   {"fi", FINNISH + W4, 0},
   {"fj", FIJIAN + W4, 0},
   // {"fk", 0, 0},
   // {"fm", 0, 0},
   {"fo", FAROESE + W4, ICELANDIC - W4},
   {"fr", FRENCH + W4, 0},
   {"ga", FRENCH + W4, 0},
   {"gd", 0, 0},
   {"ge", GEORGIAN + W4, 0},
   {"gf", FRENCH + W4, 0},
   // {"gg", 0, 0},
   // {"gh", 0, 0},
   // {"gi", 0, 0},
   {"gl", GREENLANDIC + W4, DANISH + W4},
   // {"gm", 0, 0},
   {"gn", FRENCH + W4, 0},
   // {"gp", 0, 0},
   // {"gq", 0, 0},
   {"gr", GREEK + W4, 0},
   // {"gs", 0, 0},
   {"gt", SPANISH + W4, 0},
   // {"gu", 0, 0},
   // {"gy", 0, 0},
   {"hk", CHINESE_T + W4, 0},
   // {"hm", 0, 0},
   {"hn", SPANISH + W4, 0},
   {"hr", CROATIAN + W8, BOSNIAN - W4},
   {"ht", HAITIAN_CREOLE + W4, FRENCH + W4},
   {"hu", HUNGARIAN + W4, 0},
   {"id", INDONESIAN + W4, MALAY - W4},
   {"ie", IRISH + W4, 0},
   {"il", HEBREW + W4, 0},
   {"im", MANX + W4, 0},
   // {"in", 0, 0},
   // {"io", 0, 0},
   {"iq", ARABIC + W4, 0},
   {"ir", PERSIAN + W4, 0},
   {"is", ICELANDIC + W4, FAROESE - W4},
   {"it", ITALIAN + W4, 0},
   // {"je", 0, 0},
   // {"jm", 0, 0},
   {"jo", ARABIC + W4, 0},
   {"jp", JAPANESE + W4, 0},
   // {"ke", 0, 0},
   {"kg", KYRGYZ + W4, 0},
   {"kh", KHMER + W4, 0},
   // {"ki", 0, 0},
   {"km", FRENCH + W4, 0},
   // {"kn", 0, 0},
   {"kp", KOREAN + W4, 0},
   {"kr", KOREAN + W4, 0},
   {"kw", ARABIC + W4, 0},
   // {"ky", 0, 0},
   {"kz", KAZAKH + W4, 0},
   {"la", LAOTHIAN + W4, 0},
   {"lb", ARABIC + W4, FRENCH + W4},
   // {"lc", 0, 0},
   {"li", GERMAN + W4, 0},
   {"lk", SINHALESE + W4, 0},
   // {"lr", 0, 0},
   {"ls", SESOTHO + W4, 0},
   {"lt", LITHUANIAN + W4, 0},
   {"lu", LUXEMBOURGISH + W4},
   {"lv", LATVIAN + W4, 0},
   {"ly", ARABIC + W4, 0},
   {"ma", FRENCH + W4, 0},
   {"mc", FRENCH + W4, 0},
   {"md", ROMANIAN + W4, 0},
   {"me", MONTENEGRIN + W8, SERBIAN - W4},
   {"mg", FRENCH + W4, 0},
   {"mk", MACEDONIAN + W4, 0},
   {"ml", FRENCH + W4, 0},
   {"mm", BURMESE + W4, 0},
   {"mn", MONGOLIAN + W4, 0},
   {"mo", CHINESE_T + W4, PORTUGUESE + W4},
   // {"mp", 0, 0},
   {"mq", FRENCH + W4, 0},
   {"mr", FRENCH + W4, ARABIC + W4},
   // {"ms", 0, 0},
   {"mt", MALTESE + W4, 0},
   // {"mu", 0, 0},
   {"mv", DHIVEHI + W4, 0},
   // {"mw", 0, 0},
   {"mx", SPANISH + W4, 0},
   {"my", MALAY + W4, INDONESIAN - W4},
   {"mz", PORTUGUESE + W4, 0},
   {"na", 0, 0},            // Namibia
   {"nc", FRENCH + W4, 0},
   {"ne", FRENCH + W4, 0},
   {"nf", FRENCH + W4, 0},
   // {"ng", 0, 0},
   {"ni", SPANISH + W4, 0},
   {"nl", DUTCH + W4, 0},
   {"no", NORWEGIAN + W4, NORWEGIAN_N + W2},
   {"np", NEPALI + W4, 0},
   {"nr", NAURU + W4, 0},
   {"nu", SWEDISH + W4, 0},
   {"nz", MAORI + W4, ENGLISH + W2},
   {"om", ARABIC + W4, 0},
   {"pa", SPANISH + W4, 0},
   {"pe", SPANISH + W4, QUECHUA + W2},   // also AYMARA
   {"pf", FRENCH + W4, 0},
   // {"pg", 0, 0},
   {"ph", TAGALOG + W4, 0},
   {"pk", URDU + W4, 0},
   {"pl", POLISH + W4, 0},
   // {"pn", 0, 0},
   {"pr", SPANISH + W4, 0},
   {"ps", ARABIC + W4, 0},
   {"pt", PORTUGUESE + W4, 0},
   {"py", SPANISH + W4, GUARANI + W2},
   {"qa", ARABIC + W4, 0},
   {"re", FRENCH + W4, 0},
   {"ro", ROMANIAN + W4, 0},
   {"rs", SERBIAN + W8, MONTENEGRIN - W4},
   {"ru", RUSSIAN + W4, 0},
   {"rw", KINYARWANDA + W4, FRENCH + W2},
   {"sa", ARABIC + W4, 0},
   // {"sb", 0, 0},
   {"sc", SESELWA + W4, 0},
   {"sd", ARABIC + W4, 0},
   {"se", SWEDISH + W4, 0},
   // {"sg", 0, 0},
   // {"sh", 0, 0},
   {"si", SLOVENIAN + W4, 0},
   {"sk", SLOVAK + W4, CZECH - W4},
   // {"sl", 0, 0},
   {"sm", ITALIAN + W4, 0},
   {"sn", FRENCH + W4, 0},
   // {"sr", 0, 0},
   {"ss", ARABIC + W4, 0},     // Presumed South Sudan TLD. dsites 2011.07.07
   // {"st", 0, 0},
   {"su", RUSSIAN + W4, 0},
   {"sv", SPANISH + W4, 0},
   {"sy", ARABIC + W4, 0},
   // {"sz", 0, 0},
   // {"tc", 0, 0},
   {"td", FRENCH + W4, 0},
   // {"tf", 0, 0},
   {"tg", FRENCH + W4, 0},
   {"th", THAI + W4, 0},
                               // Tibet has no country code (see .cn)
   {"tj", TAJIK + W4, 0},
   // {"tk", 0, 0},
   // {"tl", 0, 0},
   {"tm", TURKISH + W4, 0},
   {"tn", FRENCH + W4, ARABIC + W4},
   // {"to", 0, 0},
   {"tp", JAPANESE + W4, 0},
   {"tr", TURKISH + W4, 0},
   // {"tt", 0, 0},
   // {"tv", 0, 0},
   {"tw", CHINESE_T + W4, 0},
   {"tz", SWAHILI + W4, AKAN + W4},
   {"ua", UKRAINIAN + W4, 0},
   {"ug", GANDA + W4, 0},
   {"uk", ENGLISH + W2, 0},
   {"us", ENGLISH + W2, 0},
   {"uy", SPANISH + W4, 0},
   {"uz", UZBEK + W4, 0},
   {"va", ITALIAN + W4, LATIN + W2},
   // {"vc", 0, 0},
   {"ve", SPANISH + W4, 0},
   // {"vg", 0, 0},
   // {"vi", 0, 0},
   {"vn", VIETNAMESE + W4, 0},
   // {"vu", 0, 0},
   {"wf", FRENCH + W4, 0},
   // {"ws", 0, 0},
   {"ye", ARABIC + W4, 0},
   {"za", AFRIKAANS + W4, 0},
   // {"zm", 0, 0},
   // {"zw", 0, 0},
 };
 #undef W2
 #undef W4
 #undef W6
 #undef W8
 #undef W10
 #undef W12
 inline void SetCLDPriorWeight(int w, OneCLDLangPrior* olp) {
   *olp = (*olp & 0x3ff) + (w << 10);
 }
 inline void SetCLDPriorLang(Language lang, OneCLDLangPrior* olp) {
   *olp = (*olp & ~0x3ff) + lang;
 }
 OneCLDLangPrior PackCLDPriorLangWeight(Language lang, int w) {
   return (w << 10) + lang;
 }
 inline int MaxInt(int a, int b) {
   return (a >= b) ? a : b;
 }
 // Merge in another language prior, taking max if already there
 void MergeCLDLangPriorsMax(OneCLDLangPrior olp, CLDLangPriors* lps) {
   if (olp == 0) {return;}
   Language target_lang = GetCLDPriorLang(olp);
   for (int i = 0; i < lps->n; ++i) {
     if (GetCLDPriorLang(lps->prior[i]) == target_lang) {
       int new_weight = MaxInt(GetCLDPriorWeight(lps->prior[i]),
                               GetCLDPriorWeight(olp));
       SetCLDPriorWeight(new_weight, &lps->prior[i]);
       return;
     }
   }
   // Not found; add it if room
   if (lps->n >= kMaxOneCLDLangPrior) {return;}
   lps->prior[lps->n++] = olp;
 }
 // Merge in another language prior, boosting 10x if already there
 void MergeCLDLangPriorsBoost(OneCLDLangPrior olp, CLDLangPriors* lps) {
   if (olp == 0) {return;}
   Language target_lang = GetCLDPriorLang(olp);
   for (int i = 0; i < lps->n; ++i) {
     if (GetCLDPriorLang(lps->prior[i]) == target_lang) {
       int new_weight = GetCLDPriorWeight(lps->prior[i]) + 2;
       SetCLDPriorWeight(new_weight, &lps->prior[i]);
       return;
     }
   }
   // Not found; add it if room
   if (lps->n >= kMaxOneCLDLangPrior) {return;}
   lps->prior[lps->n++] = olp;
 }
 // Trim language priors to no more than max_entries, keeping largest abs weights
 void TrimCLDLangPriors(int max_entries, CLDLangPriors* lps) {
   if (lps->n <= max_entries) {return;}
   // Insertion sort in-place by abs(weight)
   for (int i = 0; i < lps->n; ++i) {
     OneCLDLangPrior temp_olp = lps->prior[i];
     int w = abs(GetCLDPriorWeight(temp_olp));
     int kk = i;
     for (; kk > 0; --kk) {
       if (abs(GetCLDPriorWeight(lps->prior[kk - 1])) < w) {
         // Move down and continue
         lps->prior[kk] = lps->prior[kk - 1];
       } else {
         // abs(weight[kk - 1]) >= w, time to stop
         break;
       }
     }
     lps->prior[kk] = temp_olp;
   }
   lps->n = max_entries;
 }
 int CountCommas(const string& langtags) {
   int commas = 0;
   for (int i = 0; i < static_cast<int>(langtags.size()); ++i) {
     if (langtags[i] == ',') {++commas;}
   }
   return commas;
 }
 // Binary lookup on language tag
 const LangTagLookup* DoLangTagLookup(const char* key,
                                      const LangTagLookup* tbl, int tbl_size) {
   // Key is always in range [lo..hi)
   int lo = 0;
   int hi = tbl_size;
   while (lo < hi) {
     int mid = (lo + hi) >> 1;
     int comp = strcmp(tbl[mid].langtag, key);
     if (comp < 0) {
       lo = mid + 1;
     } else if (comp > 0) {
       hi = mid;
     } else {
       return &tbl[mid];
     }
   }
   return NULL;
 }
 // Binary lookup on tld
 const TLDLookup* DoTLDLookup(const char* key,
                              const TLDLookup* tbl, int tbl_size) {
   // Key is always in range [lo..hi)
   int lo = 0;
   int hi = tbl_size;
   while (lo < hi) {
     int mid = (lo + hi) >> 1;
     int comp = strcmp(tbl[mid].tld, key);
     if (comp < 0) {
       lo = mid + 1;
     } else if (comp > 0) {
       hi = mid;
     } else {
       return &tbl[mid];
     }
   }
   return NULL;
 }
 // Trim language tag string to canonical form for each language
 // Input is from GetLangTagsFromHtml(), already lowercased
 string TrimCLDLangTagsHint(const string& langtags) {
   string retval;
   if (langtags.empty()) {return retval;}
   int commas = CountCommas(langtags);
   if (commas > 4) {return retval;}       // Ignore if too many language tags
   char temp[20];
   int pos = 0;
   while (pos < static_cast<int>(langtags.size())) {
     int comma = langtags.find(',', pos);
     if (comma == string::npos) {comma = langtags.size();} // fake trailing comma
     int len = comma - pos;
     if (len <= 16) {
       // Short enough to use
       memcpy(temp, &langtags[pos], len);
       temp[len] = '\0';
       const LangTagLookup* entry = DoLangTagLookup(temp,
                                                    kCLDLangTagsHintTable1,
                                                    kCLDTable1Size);
       if (entry != NULL) {
         // First table hit
         retval.append(entry->langcode);     // may be "code1,code2"
         retval.append(1, ',');
       } else {
         // Try second table with language code truncated at first hyphen
         char* hyphen = strchr(temp, '-');
         if (hyphen != NULL) {*hyphen = '\0';}
         len = strlen(temp);
         if (len <= 3) {                 // Short enough to use
           entry = DoLangTagLookup(temp,
                                   kCLDLangTagsHintTable2,
                                   kCLDTable2Size);
           if (entry != NULL) {
             // Second table hit
             retval.append(entry->langcode);     // may be "code1,code2"
             retval.append(1, ',');
           }
         }
       }
     }
     pos = comma + 1;
   }
   // Remove trainling comma, if any
   if (!retval.empty()) {retval.resize(retval.size() - 1);}
   return retval;
 }
 //==============================================================================
 // Little state machine to scan insides of language attribute quoted-string.
 // Each language code is lowercased and copied to the output string. Underscore
 // is mapped to minus. Space, tab, and comma are all mapped to comma, and
 // multiple consecutive commas are removed.
 // Each language code in the output list will be followed by a single comma.
 // There are three states, and we start in state 1:
 // State 0: After a letter.
 //  Copy all letters/minus[0], copy comma[1]; all others copy comma and skip [2]
 // State 1: Just after a comma.
 //  Copy letter [0], Ignore subsequent commas[1]. minus and all others skip [2]
 // State 2: Skipping.
 //  All characters except comma skip and stay in [2]. comma goes to [1]
 // The thing that is copied is kLangCodeRemap[c] when going to state 0,
 // and always comma when going to state 1 or 2. The design depends on copying
 // a comma at the *beginning* of skipping, and in state 2 never doing a copy.
 // We pack all this into 8 bits:
 //    +--+---+---+
 //    |78|654|321|
 //    +--+---+---+
 //
 // Shift byte right by 3*state, giving [0] 321, [1] 654, [2] .78
 // where . is always zero
 // Of these 3 bits, low two are next state ss, high bit is copy bit C.
 // If C=1 and ss == 0, copy kLangCodeRemap[c], else copy a comma
 #define SKIP0 0
 #define SKIP1 1
 #define SKIP2 2
 #define COPY0 4   // copy kLangCodeRemap[c]
 #define COPY1 5   // copy ','
 #define COPY2 6   // copy ','
 // These combined actions pack three states into one byte.
 // Ninth bit must be zero, so all state 2 values must be skips.
 //              state[2]       state[1]      state[0]
 #define LTR   ((SKIP2 << 6) + (COPY0 << 3) + COPY0)
 #define MINUS ((SKIP2 << 6) + (COPY2 << 3) + COPY0)
 #define COMMA ((SKIP1 << 6) + (SKIP1 << 3) + COPY1)
 #define Bad   ((SKIP2 << 6) + (COPY2 << 3) + COPY2)
 // Treat as letter: a-z,  A-Z
 // Treat as minus:  2D minus,  5F underscore
 // Treat as comma:  09 tab,  20 space,  2C comma
 static const unsigned char kLangCodeAction[256] = {
   Bad,Bad,Bad,Bad,Bad,Bad,Bad,Bad,  Bad,COMMA,Bad,Bad,Bad,Bad,Bad,Bad,
   Bad,Bad,Bad,Bad,Bad,Bad,Bad,Bad,  Bad,Bad,Bad,Bad,Bad,Bad,Bad,Bad,
   COMMA,Bad,Bad,Bad,Bad,Bad,Bad,Bad,  Bad,Bad,Bad,Bad,COMMA,MINUS,Bad,Bad,
   Bad,Bad,Bad,Bad,Bad,Bad,Bad,Bad,  Bad,Bad,Bad,Bad,Bad,Bad,Bad,Bad,
   Bad,LTR,LTR,LTR,LTR,LTR,LTR,LTR,  LTR,LTR,LTR,LTR,LTR,LTR,LTR,LTR,
   LTR,LTR,LTR,LTR,LTR,LTR,LTR,LTR,  LTR,LTR,LTR,Bad,Bad,Bad,Bad,MINUS,
   Bad,LTR,LTR,LTR,LTR,LTR,LTR,LTR,  LTR,LTR,LTR,LTR,LTR,LTR,LTR,LTR,
   LTR,LTR,LTR,LTR,LTR,LTR,LTR,LTR,  LTR,LTR,LTR,Bad,Bad,Bad,Bad,Bad,
   Bad,Bad,Bad,Bad,Bad,Bad,Bad,Bad,  Bad,Bad,Bad,Bad,Bad,Bad,Bad,Bad,
   Bad,Bad,Bad,Bad,Bad,Bad,Bad,Bad,  Bad,Bad,Bad,Bad,Bad,Bad,Bad,Bad,
   Bad,Bad,Bad,Bad,Bad,Bad,Bad,Bad,  Bad,Bad,Bad,Bad,Bad,Bad,Bad,Bad,
   Bad,Bad,Bad,Bad,Bad,Bad,Bad,Bad,  Bad,Bad,Bad,Bad,Bad,Bad,Bad,Bad,
   Bad,Bad,Bad,Bad,Bad,Bad,Bad,Bad,  Bad,Bad,Bad,Bad,Bad,Bad,Bad,Bad,
   Bad,Bad,Bad,Bad,Bad,Bad,Bad,Bad,  Bad,Bad,Bad,Bad,Bad,Bad,Bad,Bad,
   Bad,Bad,Bad,Bad,Bad,Bad,Bad,Bad,  Bad,Bad,Bad,Bad,Bad,Bad,Bad,Bad,
   Bad,Bad,Bad,Bad,Bad,Bad,Bad,Bad,  Bad,Bad,Bad,Bad,Bad,Bad,Bad,Bad,
 };
 // This does lowercasing, maps underscore to minus, and maps tab/space to comma
 static const unsigned char kLangCodeRemap[256] = {
 ,0,0,0,0,0,0,0,  0,',',0,0,0,0,0,0,          // 09 tab
 ,0,0,0,0,0,0,0,  0,0,0,0,0,0,0,0,
   ',',0,0,0,0,0,0,0,  0,0,0,0,',','-',0,0,      // 20 space 2C comma 2D minus
 ,0,0,0,0,0,0,0,  0,0,0,0,0,0,0,0,
 ,'a','b','c','d','e','f','g',  'h','i','j','k','l','m','n','o',
   'p','q','r','s','t','u','v','w',  'x','y','z',0,0,0,0,'-',  // 5F underscore
 ,'a','b','c','d','e','f','g',  'h','i','j','k','l','m','n','o',
   'p','q','r','s','t','u','v','w',  'x','y','z',0,0,0,0,0,
 ,0,0,0,0,0,0,0,  0,0,0,0,0,0,0,0,
 ,0,0,0,0,0,0,0,  0,0,0,0,0,0,0,0,
 ,0,0,0,0,0,0,0,  0,0,0,0,0,0,0,0,
 ,0,0,0,0,0,0,0,  0,0,0,0,0,0,0,0,
 ,0,0,0,0,0,0,0,  0,0,0,0,0,0,0,0,
 ,0,0,0,0,0,0,0,  0,0,0,0,0,0,0,0,
 ,0,0,0,0,0,0,0,  0,0,0,0,0,0,0,0,
 ,0,0,0,0,0,0,0,  0,0,0,0,0,0,0,0,
 };
 #undef LTR
 #undef MINUS
 #undef COMMA
 #undef Bad
 #undef SKIP0
 #undef SKIP1
 #undef SKIP2
 #undef COPY0
 #undef COPY1
 #undef COPY2
 // Find opening '<' for HTML tag
 // Note: this is all somewhat insensitive to mismatched quotes
 int32 FindTagStart(const char* utf8_body, int32 pos, int32 max_pos) {
   int i = pos;
   // Advance i by 4 if none of the next 4 bytes are '<'
   for (i = pos; i < (max_pos - 3); i += 4) {
     // Fast check for any <
     const char* p = &utf8_body[i];
     uint32 s0123 = UNALIGNED_LOAD32(p);
     uint32 temp = s0123 ^ 0x3c3c3c3c;    // <<<<
     if (((temp - 0x01010101) & (~temp & 0x80808080)) != 0) {
       // At least one byte is '<'
       break;
     }
   }
   // Continue, advancing i by 1
   for (; i < max_pos; ++i) {
     if (utf8_body[i] == '<') {return i;}
   }
   return -1;
 }
 // Find closing '>' for HTML tag. Also stop on < and & (simplistic parsing)
 int32 FindTagEnd(const char* utf8_body, int32 pos, int32 max_pos) {
   // Always outside quotes
   for (int i = pos; i < max_pos; ++i) {
     char c = utf8_body[i];
     if (c == '>') {return i;}
     if (c == '<') {return i - 1;}
     if (c == '&') {return i - 1;}
   }
   return -1;              // nothing found
 }
 // Find opening quote or apostrophe, skipping spaces
 // Note: this is all somewhat insensitive to mismatched quotes
 int32 FindQuoteStart(const char* utf8_body, int32 pos, int32 max_pos) {
   for (int i = pos; i < max_pos; ++i) {
     char c = utf8_body[i];
     if (c == '"') {return i;}
     if (c == '\'') {return i;}
     if (c != ' ') {return -1;}
   }
   return -1;
 }
 // Find closing quot/apos. Also stop on = > < and & (simplistic parsing)
 int32 FindQuoteEnd(const char* utf8_body, int32 pos, int32 max_pos) {
   // Always outside quotes
   for (int i = pos; i < max_pos; ++i) {
     char c = utf8_body[i];
     if (c == '"') {return i;}
     if (c == '\'') {return i;}
     if (c == '>') {return i - 1;}
     if (c == '=') {return i - 1;}
     if (c == '<') {return i - 1;}
     if (c == '&') {return i - 1;}
   }
   return -1;              // nothing found
 }
 int32 FindEqualSign(const char* utf8_body, int32 pos, int32 max_pos) {
   // Outside quotes/apostrophes loop
   for (int i = pos; i < max_pos; ++i) {
     char c = utf8_body[i];
     if (c == '=') {       // Found bare equal sign inside tag
       return i;
     } else if (c == '"') {
       // Inside quotes loop
       int j;
       for (j = i + 1; j < max_pos; ++j) {
         if (utf8_body[j] == '"') {
           break;
         } else if (utf8_body[j] == '\\') {
           ++j;
         }
       }
       i = j;
     } else if (c == '\'') {
       // Inside apostrophes loop
       int j;
       for (j = i + 1; j < max_pos; ++j) {
         if (utf8_body[j] == '\'') {
           break;
         } else if (utf8_body[j] == '\\') {
           ++j;
         }
       }
       i = j;
     }
   }
   return -1;              // nothing found
 }
 // Scan backwards for case-insensitive string s in [min_pos..pos)
 // Bytes of s must already be lowercase, i.e. in [20..3f] or [60..7f]
 // Cheap lowercase. Control codes will masquerade as 20..3f
 bool FindBefore(const char* utf8_body,
                  int32 min_pos, int32 pos, const char* s) {
   int len = strlen(s);
   if ((pos - min_pos) < len) {return false;}     // Too small to fit s
   // Skip trailing spaces
   int i = pos;
   while ((i > (min_pos + len)) && (utf8_body[i - 1] == ' ')) {--i;}
   i -= len;
   if (i < min_pos) {return false;}   // pos - min_pos < len, so s can't be found
   const char* p = &utf8_body[i];
   for (int j = 0; j < len; ++j) {
     if ((p[j] | 0x20) != s[j])  {return false;}    // Unequal byte
   }
   return true;                                     // All bytes equal at i
 }
 // Scan forwards for case-insensitive string s in [pos..max_pos)
 // Bytes of s must already be lowercase, i.e. in [20..3f] or [60..7f]
 // Cheap lowercase. Control codes will masquerade as 20..3f
 // Allows but does not require quoted/apostrophe string
 bool FindAfter(const char* utf8_body,
                  int32 pos, int32 max_pos, const char* s) {
   int len = strlen(s);
   if ((max_pos - pos) < len) {return false;}     // Too small to fit s
   // Skip leading spaces, quote, apostrophe
   int i = pos;
   while (i < (max_pos - len)) {
     unsigned char c = utf8_body[i];
     if ((c == ' ') || (c == '"') || (c == '\'')) {++i;}
     else {break;}
   }
   const char* p = &utf8_body[i];
   for (int j = 0; j < len; ++j) {
     if ((p[j] | 0x20) != s[j])  {return false;}    // Unequal byte
   }
   return true;                                     // All bytes equal
 }
 // Copy attribute value in [pos..max_pos)
 // pos is just after an opening quote/apostrophe and max_pos is the ending one
 // String must all be on a single line.
 // Return slightly-normalized language list, empty or ending in comma
 // Does lowercasing and removes excess punctuation/space
 string CopyOneQuotedString(const char* utf8_body,
                          int32 pos, int32 max_pos) {
   string s;
   int state = 1;        // Front is logically just after a comma
   for (int i = pos; i < max_pos; ++i) {
     unsigned char c = utf8_body[i];
     int e = kLangCodeAction[c] >> (3 * state);
     state = e & 3;      // Update to next state
     if ((e & 4) != 0) {
       // Copy a remapped byte if going to state 0, else copy a comma
       if (state == 0) {
         s.append(1, kLangCodeRemap[c]);
       } else {
         s.append(1, ',');
       }
     }
   }
   // Add final comma if needed
   if (state == 0) {
     s.append(1, ',');
   }
   return s;
 }
 // Find and copy attribute value: quoted string in [pos..max_pos)
 // Return slightly-normalized language list, empty or ending in comma
 string CopyQuotedString(const char* utf8_body,
                          int32 pos, int32 max_pos) {
   int32 start_quote = FindQuoteStart(utf8_body, pos, max_pos);
   if (start_quote < 0) {return string("");}
   int32 end_quote = FindQuoteEnd(utf8_body, start_quote + 1, max_pos);
   if (end_quote < 0) {return string("");}
   return CopyOneQuotedString(utf8_body, start_quote + 1, end_quote);
 }
 // Add hints to vector of langpriors
 // Input is from GetLangTagsFromHtml(), already lowercased
 void SetCLDLangTagsHint(const string& langtags, CLDLangPriors* langpriors) {
   if (langtags.empty()) {return;}
   int commas = CountCommas(langtags);
   if (commas > 4) {return;}       // Ignore if too many language tags
   char temp[20];
   int pos = 0;
   while (pos < static_cast<int>(langtags.size())) {
     int comma = langtags.find(',', pos);
     if (comma == string::npos) {comma = langtags.size();} // fake trailing comma
     int len = comma - pos;
     if (len <= 16) {
       // Short enough to use
       memcpy(temp, &langtags[pos], len);
       temp[len] = '\0';
       const LangTagLookup* entry = DoLangTagLookup(temp,
                                                    kCLDLangTagsHintTable1,
                                                    kCLDTable1Size);
       if (entry != NULL) {
         // First table hit
         MergeCLDLangPriorsMax(entry->onelangprior1, langpriors);
         MergeCLDLangPriorsMax(entry->onelangprior2, langpriors);
       } else {
         // Try second table with language code truncated at first hyphen
         char* hyphen = strchr(temp, '-');
         if (hyphen != NULL) {*hyphen = '\0';}
         len = strlen(temp);
         if (len <= 3) {                 // Short enough to use
           entry = DoLangTagLookup(temp,
                                   kCLDLangTagsHintTable2,
                                   kCLDTable2Size);
           if (entry != NULL) {
             // Second table hit
             MergeCLDLangPriorsMax(entry->onelangprior1, langpriors);
             MergeCLDLangPriorsMax(entry->onelangprior2, langpriors);
           }
         }
       }
     }
     pos = comma + 1;
   }
 }
 // Add hints to vector of langpriors
 // Input is string after HTTP header Content-Language:
 void SetCLDContentLangHint(const char* contentlang, CLDLangPriors* langpriors) {
   string langtags = CopyOneQuotedString(contentlang, 0, strlen(contentlang));
   SetCLDLangTagsHint(langtags, langpriors);
 }
 // Add hints to vector of langpriors
 // Input is last element of hostname (no dot), e.g. from GetTLD()
 void SetCLDTLDHint(const char* tld, CLDLangPriors* langpriors) {
   int len = strlen(tld);
   if (len > 3) {return;}        // Ignore if more than three letters
   char local_tld[4];
   strncpy(local_tld, tld, 4);
   local_tld[3] = '\0';          // Safety move
   // Lowercase
   for (int i = 0; i < len; ++i) {local_tld[i] |= 0x20;}
   const TLDLookup* entry = DoTLDLookup(local_tld,
                                        kCLDTLDHintTable,
                                        kCLDTable3Size);
   if (entry != NULL) {
     // Table hit
     MergeCLDLangPriorsBoost(entry->onelangprior1, langpriors);
     MergeCLDLangPriorsBoost(entry->onelangprior2, langpriors);
   }
 }
 // Add hints to vector of langpriors
 // Input is from DetectEncoding()
 void SetCLDEncodingHint(Encoding enc, CLDLangPriors* langpriors) {
   OneCLDLangPrior olp;
   switch (enc) {
   case CHINESE_GB:
   case GBK:
   case GB18030:
   case ISO_2022_CN:
   case HZ_GB_2312:
     olp = PackCLDPriorLangWeight(CHINESE, kCLDPriorEncodingWeight);
     MergeCLDLangPriorsBoost(olp, langpriors);
     break;
   case CHINESE_BIG5:
   case CHINESE_BIG5_CP950:
   case BIG5_HKSCS:
     olp = PackCLDPriorLangWeight(CHINESE_T, kCLDPriorEncodingWeight);
     MergeCLDLangPriorsBoost(olp, langpriors);
     break;
   case JAPANESE_EUC_JP:
   case JAPANESE_SHIFT_JIS:
   case JAPANESE_CP932:
   case JAPANESE_JIS:          // ISO-2022-JP
     olp = PackCLDPriorLangWeight(JAPANESE, kCLDPriorEncodingWeight);
     MergeCLDLangPriorsBoost(olp, langpriors);
     break;
   case KOREAN_EUC_KR:
   case ISO_2022_KR:
     olp = PackCLDPriorLangWeight(KOREAN, kCLDPriorEncodingWeight);
     MergeCLDLangPriorsBoost(olp, langpriors);
     break;
   default:
     break;
   }
 }
 // Add hints to vector of langpriors
 // Input is from random source
 void SetCLDLanguageHint(Language lang, CLDLangPriors* langpriors) {
   OneCLDLangPrior olp = PackCLDPriorLangWeight(lang, kCLDPriorLanguageWeight);
   MergeCLDLangPriorsBoost(olp, langpriors);
 }
 // Make printable string of priors
 string DumpCLDLangPriors(const CLDLangPriors* langpriors) {
   string retval;
   for (int i = 0; i < langpriors->n; ++i) {
     char temp[64];
     sprintf(temp, "%s.%d ",
              LanguageCode(GetCLDPriorLang(langpriors->prior[i])),
              GetCLDPriorWeight(langpriors->prior[i]));
     retval.append(temp);
   }
   return retval;
 }
 // Look for
 //  <html lang="en">
 //  <doc xml:lang="en">
 //  <html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en-US">
 //  <meta http-equiv="content-language" content="en-GB" />
 //  <meta name="language" content="Srpski">
 //  <meta name="DC.language" scheme="RFCOMMA766" content="en">
 //  <SPAN id="msg1" class="info" lang='en'>
 //
 // Do not trigger on
 //  <!-- lang=french ...-->
 //  <font lang=postscript ...>
 //  <link href="index.fr.html" hreflang="fr-FR" xml:lang="fr-FR" />
 //  <META name="Author" lang="fr" content="Arnaud Le Hors">
 //
 // Stop fairly quickly on mismatched quotes
 //
 // Allowed language characters
 //  a-z A-Z -_ , space\t
 // Think about: GB2312, big5, shift-jis, euc-jp, ksc euc-kr
 //  zh-hans zh-TW cmn-Hani zh_cn.gb18030_CN zh-min-nan zh-yue
 //  de-x-mtfrom-en  zh-tw-x-mtfrom-en  (machine translation)
 // GB2312 => gb
 // Big5 => big
 // zh_CN.gb18030_C => zh-cn
 //
 // Remove duplicates and extra spaces as we go
 // Lowercase as we go.
 // Get language tag hints from HTML body
 // Normalize: remove spaces and make lowercase comma list
 string GetLangTagsFromHtml(const char* utf8_body, int32 utf8_body_len,
                            int32 max_scan_bytes) {
   string retval;
   if (max_scan_bytes > utf8_body_len) {
     max_scan_bytes = utf8_body_len;
   }
   int32 k = 0;
   while (k < max_scan_bytes) {
     int32 start_tag = FindTagStart(utf8_body, k, max_scan_bytes);
     if (start_tag < 0) {break;}
     int32 end_tag = FindTagEnd(utf8_body, start_tag + 1, max_scan_bytes);
     // FindTagEnd exits on < > &
     if (end_tag < 0) {break;}
     // Skip <!--...>
     // Skip <font ...>
     // Skip <script ...>
     // Skip <link ...>
     // Skip <img ...>
     // Skip <a ...>
     if (FindAfter(utf8_body, start_tag + 1, end_tag, "!--") ||
         FindAfter(utf8_body, start_tag + 1, end_tag, "font ") ||
         FindAfter(utf8_body, start_tag + 1, end_tag, "script ") ||
         FindAfter(utf8_body, start_tag + 1, end_tag, "link ") ||
         FindAfter(utf8_body, start_tag + 1, end_tag, "img ") ||
         FindAfter(utf8_body, start_tag + 1, end_tag, "a ")) {
       k = end_tag + 1;
       continue;
     }
     // Remember <meta ...>
     bool in_meta = false;
     if (FindAfter(utf8_body, start_tag + 1, end_tag, "meta ")) {
       in_meta = true;
     }
     // Scan for each equal sign inside tag
     bool content_is_lang = false;
     int32 kk = start_tag + 1;
     int32 equal_sign;
     while ((equal_sign = FindEqualSign(utf8_body, kk, end_tag)) >= 0) {
       // eq exits on < > &
       // Look inside a meta tag
       // <meta ... http-equiv="content-language" ...>
       // <meta ... name="language" ...>
       // <meta ... name="dc.language" ...>
       if (in_meta) {
         if (FindBefore(utf8_body, kk, equal_sign, " http-equiv") &&
             FindAfter(utf8_body, equal_sign + 1, end_tag,
                       "content-language ")) {
           content_is_lang = true;
         } else if (FindBefore(utf8_body, kk, equal_sign, " name") &&
                    (FindAfter(utf8_body, equal_sign + 1, end_tag,
                               "dc.language ") ||
                     FindAfter(utf8_body, equal_sign + 1, end_tag,
                               "language "))) {
           content_is_lang = true;
         }
       }
       // Look inside any tag
       // <meta ... content="lang-list" ...>
       // <... lang="lang-list" ...>
       // <... xml:lang="lang-list" ...>
       if ((content_is_lang && FindBefore(utf8_body, kk, equal_sign,
                                          " content")) ||
           FindBefore(utf8_body, kk, equal_sign, " lang") ||
           FindBefore(utf8_body, kk, equal_sign, ":lang")) {
         string temp = CopyQuotedString(utf8_body, equal_sign + 1, end_tag);
         // Append new lang tag(s) if not a duplicate
         if (!temp.empty() && (retval.find(temp) == string::npos)) {
           retval.append(temp);
         }
       }
       kk = equal_sign + 1;
     }
     k = end_tag + 1;
   }
   // Strip last comma
   if (retval.size() > 1) {
     retval.erase(retval.size() - 1);
   }
   return retval;
 }
 }       // End namespace CLD2
 //==============================================================================

The Tor Browser / annotate

browser/components/translation/cld2/internal/compact_lang_det_hint_code.cc@6474c204b198 (annotated)

browser/components/translation/cld2/internal/compact_lang_det_hint_code.cc