Collate::Locale - Online Linux Manual PageSection : 3
Updated : 2021-08-23
Source : perl v5.34.0
Note : User Contributed Perl Documentation

NAMEUnicode::Collate::Locale − Linguistic tailoring for DUCET via Unicode::Collate

SYNOPSIS​ use Unicode::Collate::Locale; ​ ​ #construct ​ $Collator = Unicode::Collate::Locale−> ​ new(locale => $locale_name, %tailoring); ​ ​ #sort ​ @sorted = $Collator−>sort(@not_sorted); ​ ​ #compare ​ $result = $Collator−>cmp($a, $b); # returns 1, 0, or −1. Note: Strings in @not_sorted, $a and $b are interpreted according to Perl's Unicode support. See perlunicode, perluniintro, perlunitut, perlunifaq, utf8. Otherwise you can use preprocess (cf. Unicode::Collate) or should decode them before.

DESCRIPTIONThis module provides linguistic tailoring for it taking advantage of Unicode::Collate.

ConstructorThe new method returns a collator object. A parameter list for the constructor is a hash, which can include a special key locale and its value (case-insensitive) standing for a Unicode base language code (two or three-letter). For example, Unicode::Collate::Locale−>new(locale => 'ES') returns a collator tailored for Spanish. $locale_name may be suffixed with a Unicode script code (four-letter), a Unicode region (territory) code, a Unicode language variant code. These codes are case-insensitive, and separated with '_' or '−'. E.g. en_US for English in USA,az_Cyrl for Azerbaijani in the Cyrillic script, ​es_ES_traditional for Spanish in Spain (Traditional). If $locale_name is not available, fallback is selected in the following order: ​ 1. language with a variant code ​ 2. language with a script code ​ 3. language with a region code ​ 4. language ​ 5. default Tailoring tags provided by Unicode::Collate are allowed as long as they are not used for locale support. Esp. the table tag is always untailorable, since it is reserved for DUCET. However entry is allowed, even if it is used for locale support, to add or override mappings. E.g. a collator for Spanish, which ignores diacritics and case difference (i.e. level 1), with reversed case ordering and no normalization. ​ Unicode::Collate::Locale−>new( ​ level => 1, ​ locale => 'es', ​ upper_before_lower => 1, ​ normalization => undef ​ ) Overriding a behavior already tailored by locale is disallowed if such a tailoring is passed to new(). ​ Unicode::Collate::Locale−>new( ​ locale => 'da', ​ upper_before_lower => 0, # causes error as reserved by 'da' ​ ) However change() inherited from Unicode::Collate allows such a tailoring that is reserved by locale. Examples: ​ new(locale => 'fr_ca')>change(backwards => undef) ​ new(locale => 'da')>change(upper_before_lower => 0) ​ new(locale => 'ja')>change(overrideCJK => undef)

MethodsUnicode::Collate::Locale is a subclass of Unicode::Collate and methods other than new are inherited from Unicode::Collate. Here is a list of additional methods: $Collator−>getlocale Returns a language code accepted and used actually on collation. If linguistic tailoring is not provided for a language code you passed (intensionally for some languages, or due to the incomplete implementation), this method returns a string 'default' meaning no special tailoring. $Collator−>locale_version (Since Unicode::Collate::Locale 0.87) Returns the version number (perhaps /\d\.\d\d/) of the locale, as that of Locale/*.pl. Note: Locale/*.pl that a collator uses should be identified by a combination of return values from getlocale and locale_version.

A list of tailorable locales​ locale name description ​ −−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−− ​ af Afrikaans ​ ar Arabic ​ as Assamese ​ az Azerbaijani (Azeri) ​ be Belarusian ​ bn Bengali ​ bs Bosnian (tailored as Croatian) ​ bs_Cyrl Bosnian in Cyrillic (tailored as Serbian) ​ ca Catalan ​ cs Czech ​ cu Church Slavic ​ cy Welsh ​ da Danish ​ de_ _phonebook German (umlaut as 'ae', 'oe', 'ue') ​ de_AT_phonebook Austrian German (umlaut primary greater) ​ dsb Lower Sorbian ​ ee Ewe ​ eo Esperanto ​ es Spanish ​ es_ _traditional Spanish ('ch' and 'll' as a grapheme) ​ et Estonian ​ fa Persian ​ fi Finnish (v and w are primary equal) ​ fi_ _phonebook Finnish (v and w as separate characters) ​ fil Filipino ​ fo Faroese ​ fr_CA Canadian French ​ gu Gujarati ​ ha Hausa ​ haw Hawaiian ​ he Hebrew ​ hi Hindi ​ hr Croatian ​ hu Hungarian ​ hy Armenian ​ ig Igbo ​ is Icelandic ​ ja Japanese [1] ​ kk Kazakh ​ kl Kalaallisut ​ kn Kannada ​ ko Korean [2] ​ kok Konkani ​ lkt Lakota ​ ln Lingala ​ lt Lithuanian ​ lv Latvian ​ mk Macedonian ​ ml Malayalam ​ mr Marathi ​ mt Maltese ​ nb Norwegian Bokmal ​ nn Norwegian Nynorsk ​ nso Northern Sotho ​ om Oromo ​ or Oriya ​ pa Punjabi ​ pl Polish ​ ro Romanian ​ sa Sanskrit ​ se Northern Sami ​ si Sinhala ​ si_ _dictionary Sinhala (U+0DA5 = U+0DA2,0DCA,0DA4) ​ sk Slovak ​ sl Slovenian ​ sq Albanian ​ sr Serbian ​ sr_Latn Serbian in Latin (tailored as Croatian) ​ sv Swedish (v and w are primary equal) ​ sv_ _reformed Swedish (v and w as separate characters) ​ ta Tamil ​ te Telugu ​ th Thai ​ tn Tswana ​ to Tonga ​ tr Turkish ​ ug_Cyrl Uyghur in Cyrillic ​ uk Ukrainian ​ ur Urdu ​ vi Vietnamese ​ vo Volapu"k ​ wae Walser ​ wo Wolof ​ yo Yoruba ​ zh Chinese ​ zh_ _big5han Chinese (ideographs: big5 order) ​ zh_ _gb2312han Chinese (ideographs: GB−2312 order) ​ zh_ _pinyin Chinese (ideographs: pinyin order) [3] ​ zh_ _stroke Chinese (ideographs: stroke order) [3] ​ zh_ _zhuyin Chinese (ideographs: zhuyin order) [3] ​ −−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−− Locales according to the default UCA rules include am (Amharic) without [reorder Ethi], bg (Bulgarian) without [reorder Cyrl], chr (Cherokee) without [reorder Cher], de (German), en (English), fr (French), ga (Irish), id (Indonesian), it (Italian), ka (Georgian) without [reorder Geor], mn (Mongolian) without [reorder Cyrl Mong], ms (Malay), nl (Dutch), pt (Portuguese), ru (Russian) without [reorder Cyrl], sw (Swahili), zu (Zulu). Note [1] ja: Ideographs are sorted in JIS X 0208 order. Fullwidth and halfwidth forms are identical to their regular form. The difference between hiragana and katakana is at the 4th level, the comparison also requires (variable => 'Non−ignorable'), and then katakana_before_hiragana has no effect. [2] ko: Plenty of ideographs are sorted by their reading. Such an ideograph is primary (level 1) equal to, and secondary (level 2) greater than, the corresponding hangul syllable. [3] zh_ _pinyin, zh_ _stroke and zh_ _zhuyin: implemented alt='short', where a smaller number of ideographs are tailored.

A list of variant codes and their aliases​ variant code alias ​ −−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−− ​ dictionary dict ​ phonebook phone phonebk ​ reformed reform ​ traditional trad ​ −−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−− ​ big5han big5 ​ gb2312han gb2312 ​ pinyin ​ stroke ​ zhuyin ​ −−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−− Note: 'pinyin' is Han in Latin, 'zhuyin' is Han in Bopomofo.

INSTALLInstallation of Unicode::Collate::Locale requires Collate/Locale.pm, ​Collate/Locale/*.pm, Collate/CJK/*.pm and Collate/allkeys.txt. On building, Unicode::Collate::Locale doesn't require any of data/*.txt, gendata/*, and mklocale. Tests for Unicode::Collate::Locale are named t/loc_*.t.

CAVEATTailoring is not maximum Even if a certain letter is tailored, its equivalent would not always tailored as well as it. For example, even though W is tailored, fullwidth W (U+FF37), W with acute (U+1E82), etc. are not tailored. The result may depend on whether source strings are normalized or not, and whether decomposed or composed. Thus (normalization => undef) is less preferred. Collation reordering is not supported The order of any groups including scripts is not changed.

Reference​ locale based CLDR or other reference ​ −−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−− ​ af 30 = 1.8.1 ​ ar 30 = 28 ("compat" wo [reorder Arab]) = 1.9.0 ​ as 30 = 28 (without [reorder Beng..]) = 23 ​ az 30 = 24 ("standard" wo [reorder Latn Cyrl]) ​ be 30 = 28 (without [reorder Cyrl]) ​ bn 30 = 28 ("standard" wo [reorder Beng..]) = 2.0.1 ​ bs 30 = 28 (type="standard": [import hr]) ​ bs_Cyrl 30 = 28 (type="standard": [import sr]) ​ ca 30 = 23 (alt="proposed" type="standard") ​ cs 30 = 1.8.1 (type="standard") ​ cu 34 = 30 (without [reorder Cyrl]) ​ cy 30 = 1.8.1 ​ da 22.1 = 1.8.1 (type="standard") ​ de_ _phonebook 30 = 2.0 (type="phonebook") ​ de_AT_phonebook 30 = 27 (type="phonebook") ​ dsb 30 = 26 ​ ee 30 = 21 ​ eo 30 = 1.8.1 ​ es 30 = 1.9.0 (type="standard") ​ es_ _traditional 30 = 1.8.1 (type="traditional") ​ et 30 = 26 ​ fa 22.1 = 1.8.1 ​ fi 22.1 = 1.8.1 (type="standard" alt="proposed") ​ fi_ _phonebook 22.1 = 1.8.1 (type="phonebook") ​ fil 30 = 1.9.0 (type="standard") = 1.8.1 ​ fo 22.1 = 1.8.1 (alt="proposed" type="standard") ​ fr_CA 30 = 1.9.0 ​ gu 30 = 28 ("standard" wo [reorder Gujr..]) = 1.9.0 ​ ha 30 = 1.9.0 ​ haw 30 = 24 ​ he 30 = 28 (without [reorder Hebr]) = 23 ​ hi 30 = 28 (without [reorder Deva..]) = 1.9.0 ​ hr 30 = 28 ("standard" wo [reorder Latn Cyrl]) = 1.9.0 ​ hu 22.1 = 1.8.1 (alt="proposed" type="standard") ​ hy 30 = 28 (without [reorder Armn]) = 1.8.1 ​ ig 30 = 1.8.1 ​ is 22.1 = 1.8.1 (type="standard") ​ ja 22.1 = 1.8.1 (type="standard") ​ kk 30 = 28 (without [reorder Cyrl]) ​ kl 22.1 = 1.8.1 (type="standard") ​ kn 30 = 28 ("standard" wo [reorder Knda..]) = 1.9.0 ​ ko 22.1 = 1.8.1 (type="standard") ​ kok 30 = 28 (without [reorder Deva..]) = 1.8.1 ​ lkt 30 = 25 ​ ln 30 = 2.0 (type="standard") = 1.8.1 ​ lt 22.1 = 1.9.0 ​ lv 22.1 = 1.9.0 (type="standard") = 1.8.1 ​ mk 30 = 28 (without [reorder Cyrl]) ​ ml 22.1 = 1.9.0 ​ mr 30 = 28 (without [reorder Deva..]) = 1.8.1 ​ mt 22.1 = 1.9.0 ​ nb 22.1 = 2.0 (type="standard") ​ nn 22.1 = 2.0 (type="standard") ​ nso [*] 26 = 1.8.1 ​ om 22.1 = 1.8.1 ​ or 30 = 28 (without [reorder Orya..]) = 1.9.0 ​ pa 22.1 = 1.8.1 ​ pl 30 = 1.8.1 ​ ro 30 = 1.9.0 (type="standard") ​ sa [*] 1.9.1 = 1.8.1 (type="standard" alt="proposed") ​ se 22.1 = 1.8.1 (type="standard") ​ si 30 = 28 ("standard" wo [reorder Sinh..]) = 1.9.0 ​ si_ _dictionary 30 = 28 ("dictionary" wo [reorder Sinh..]) = 1.9.0 ​ sk 22.1 = 1.9.0 (type="standard") ​ sl 22.1 = 1.8.1 (type="standard" alt="proposed") ​ sq 22.1 = 1.8.1 (alt="proposed" type="standard") ​ sr 30 = 28 (without [reorder Cyrl]) ​ sr_Latn 30 = 28 (type="standard": [import hr]) ​ sv 22.1 = 1.9.0 (type="standard") ​ sv_ _reformed 22.1 = 1.8.1 (type="reformed") ​ ta 22.1 = 1.9.0 ​ te 30 = 28 (without [reorder Telu..]) = 1.9.0 ​ th 22.1 = 22 ​ tn [*] 26 = 1.8.1 ​ to 22.1 = 22 ​ tr 22.1 = 1.8.1 (type="standard") ​ uk 30 = 28 (without [reorder Cyrl]) ​ ug_Cyrl https://en.wikipedia.org/wiki/Uyghur_Cyrillic_alphabet ​ ur 22.1 = 1.9.0 ​ vi 22.1 = 1.8.1 ​ vo 30 = 25 ​ wae 30 = 2.0 ​ wo [*] 1.9.1 = 1.8.1 ​ yo 30 = 1.8.1 ​ zh 22.1 = 1.8.1 (type="standard") ​ zh_ _big5han 22.1 = 1.8.1 (type="big5han") ​ zh_ _gb2312han 22.1 = 1.8.1 (type="gb2312han") ​ zh_ _pinyin 22.1 = 2.0 (type='pinyin' alt='short') ​ zh_ _stroke 22.1 = 1.9.1 (type='stroke' alt='short') ​ zh_ _zhuyin 22.1 = 22 (type='zhuyin' alt='short') ​ −−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−− [*] http://www.unicode.org/repos/cldr/tags/latest/seed/collation/

AUTHORThe Unicode::Collate::Locale module for perl was written by SADAHIRO Tomoyuki, <SADAHIRO@cpan.org>. This module is Copyright(C) 2004−2020, SADAHIRO Tomoyuki. Japan. All rights reserved. This module is free software; you can redistribute it and/or modify it under the same terms as Perl itself.

SEE ALSOUnicode Collation Algorithm − UTS #10 <http://www.unicode.org/reports/tr10/> The Default Unicode Collation Element Table (DUCET) <http://www.unicode.org/Public/UCA/latest/allkeys.txt> Unicode Locale Data Markup Language (LDML)UTS #35 <http://www.unicode.org/reports/tr35/> CLDR − Unicode Common Locale Data Repository <http://cldr.unicode.org/> Unicode::Collate Unicode::Normalize 
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