Unicode::Collate::Locale - Linguistic tailoring for DUCET via Unicode::Collate
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. Seeperlunicode,perluniintro,perlunitut,perlunifaq,utf8. Otherwise you can usepreprocess (cf.Unicode::Collate) or should decode them before.
This module provides linguistic tailoring for it taking advantage ofUnicode::Collate.
Thenew method returns a collator object.
A parameter list for the constructor is a hash, which can include a special keylocale 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 code2. language with a script code3. language with a region code4. language5. defaultTailoring tags provided byUnicode::Collate are allowed as long as they are not used forlocale support. Esp. thetable tag is always untailorable, since it is reserved for DUCET.
Howeverentry is allowed, even if it is used forlocale 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 bylocale is disallowed if such a tailoring is passed tonew().
Unicode::Collate::Locale->new( locale => 'da', upper_before_lower => 0, # causes error as reserved by 'da')Howeverchange() inherited fromUnicode::Collate allows such a tailoring that is reserved bylocale. Examples:
new(locale => 'fr_ca')->change(backwards => undef)new(locale => 'da')->change(upper_before_lower => 0)new(locale => 'ja')->change(overrideCJK => undef)Unicode::Collate::Locale is a subclass ofUnicode::Collate and methods other thannew are inherited fromUnicode::Collate.
Here is a list of additional methods:
$Collator->getlocaleReturns 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 ofLocale/*.pl.
Note:Locale/*.pl that a collator uses should be identified by a combination of return values fromgetlocale andlocale_version.
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 thenkatakana_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.
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.
Installation ofUnicode::Collate::Locale requiresCollate/Locale.pm,Collate/Locale/*.pm,Collate/CJK/*.pm andCollate/allkeys.txt. On building,Unicode::Collate::Locale doesn't require any ofdata/*.txt,gendata/*, andmklocale. Tests forUnicode::Collate::Locale are namedt/loc_*.t.
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.
The order of any groups including scripts is not changed.
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/
The 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.
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