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.\" ========================================================================
.\"
.IX Title "Unicode::Collate::Locale 3"
.TH Unicode::Collate::Locale 3 "2019-10-24" "perl v5.30.2" "Perl Programmers Reference Guide"
.\" For nroff, turn off justification. Always turn off hyphenation; it makes
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.nh
.SH "NAME"
Unicode::Collate::Locale \- Linguistic tailoring for DUCET via Unicode::Collate
.SH "SYNOPSIS"
.IX Header "SYNOPSIS"
.Vb 1
\& 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, $b); # returns 1, 0, or \-1.
.Ve
.PP
\&\fBNote:\fR Strings in \f(CW@not_sorted\fR, \f(CW$a\fR and \f(CW$b\fR are interpreted
according to Perl's Unicode support. See perlunicode,
perluniintro, perlunitut, perlunifaq, utf8.
Otherwise you can use \f(CW\*(C`preprocess\*(C'\fR (cf. \f(CW\*(C`Unicode::Collate\*(C'\fR)
or should decode them before.
.SH "DESCRIPTION"
.IX Header "DESCRIPTION"
This module provides linguistic tailoring for it
taking advantage of \f(CW\*(C`Unicode::Collate\*(C'\fR.
.SS "Constructor"
.IX Subsection "Constructor"
The \f(CW\*(C`new\*(C'\fR method returns a collator object.
.PP
A parameter list for the constructor is a hash, which can include
a special key \f(CW\*(C`locale\*(C'\fR and its value (case-insensitive) standing
for a Unicode base language code (two or three-letter).
For example, \f(CW\*(C`Unicode::Collate::Locale\->new(locale => \*(AqES\*(Aq)\*(C'\fR
returns a collator tailored for Spanish.
.PP
\&\f(CW$locale_name\fR 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 \f(CW\*(Aq_\*(Aq\fR or \f(CW\*(Aq\-\*(Aq\fR.
E.g. \f(CW\*(C`en_US\*(C'\fR for English in \s-1USA,\s0
\&\f(CW\*(C`az_Cyrl\*(C'\fR for Azerbaijani in the Cyrillic script,
\&\f(CW\*(C`es_ES_traditional\*(C'\fR for Spanish in Spain (Traditional).
.PP
If \f(CW$locale_name\fR is not available,
fallback is selected in the following order:
.PP
.Vb 5
\& 1. language with a variant code
\& 2. language with a script code
\& 3. language with a region code
\& 4. language
\& 5. default
.Ve
.PP
Tailoring tags provided by \f(CW\*(C`Unicode::Collate\*(C'\fR are allowed as long as
they are not used for \f(CW\*(C`locale\*(C'\fR support. Esp. the \f(CW\*(C`table\*(C'\fR tag
is always untailorable, since it is reserved for \s-1DUCET.\s0
.PP
However \f(CW\*(C`entry\*(C'\fR is allowed, even if it is used for \f(CW\*(C`locale\*(C'\fR support,
to add or override mappings.
.PP
E.g. a collator for Spanish, which ignores diacritics and case difference
(i.e. level 1), with reversed case ordering and no normalization.
.PP
.Vb 6
\& Unicode::Collate::Locale\->new(
\& level => 1,
\& locale => \*(Aqes\*(Aq,
\& upper_before_lower => 1,
\& normalization => undef
\& )
.Ve
.PP
Overriding a behavior already tailored by \f(CW\*(C`locale\*(C'\fR is disallowed
if such a tailoring is passed to \f(CW\*(C`new()\*(C'\fR.
.PP
.Vb 4
\& Unicode::Collate::Locale\->new(
\& locale => \*(Aqda\*(Aq,
\& upper_before_lower => 0, # causes error as reserved by \*(Aqda\*(Aq
\& )
.Ve
.PP
However \f(CW\*(C`change()\*(C'\fR inherited from \f(CW\*(C`Unicode::Collate\*(C'\fR allows
such a tailoring that is reserved by \f(CW\*(C`locale\*(C'\fR. Examples:
.PP
.Vb 3
\& new(locale => \*(Aqfr_ca\*(Aq)\->change(backwards => undef)
\& new(locale => \*(Aqda\*(Aq)\->change(upper_before_lower => 0)
\& new(locale => \*(Aqja\*(Aq)\->change(overrideCJK => undef)
.Ve
.SS "Methods"
.IX Subsection "Methods"
\&\f(CW\*(C`Unicode::Collate::Locale\*(C'\fR is a subclass of \f(CW\*(C`Unicode::Collate\*(C'\fR
and methods other than \f(CW\*(C`new\*(C'\fR are inherited from \f(CW\*(C`Unicode::Collate\*(C'\fR.
.PP
Here is a list of additional methods:
.ie n .IP """$Collator\->getlocale""" 4
.el .IP "\f(CW$Collator\->getlocale\fR" 4
.IX Item "$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 \f(CW\*(Aqdefault\*(Aq\fR meaning no special tailoring.
.ie n .IP """$Collator\->locale_version""" 4
.el .IP "\f(CW$Collator\->locale_version\fR" 4
.IX Item "$Collator->locale_version"
(Since Unicode::Collate::Locale 0.87)
Returns the version number (perhaps \f(CW\*(C`/\ed\e.\ed\ed/\*(C'\fR) of the locale, as that
of \fILocale/*.pl\fR.
.Sp
\&\fBNote:\fR \fILocale/*.pl\fR that a collator uses should be identified by
a combination of return values from \f(CW\*(C`getlocale\*(C'\fR and \f(CW\*(C`locale_version\*(C'\fR.
.SS "A list of tailorable locales"
.IX Subsection "A list of tailorable locales"
.Vb 10
\& 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 \*(Aqae\*(Aq, \*(Aqoe\*(Aq, \*(Aque\*(Aq)
\& de_AT_phonebook Austrian German (umlaut primary greater)
\& dsb Lower Sorbian
\& ee Ewe
\& eo Esperanto
\& es Spanish
\& es_\|_traditional Spanish (\*(Aqch\*(Aq and \*(Aqll\*(Aq 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]
\& \-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-
.Ve
.PP
Locales according to the default \s-1UCA\s0 rules include
am (Amharic) without \f(CW\*(C`[reorder Ethi]\*(C'\fR,
bg (Bulgarian) without \f(CW\*(C`[reorder Cyrl]\*(C'\fR,
chr (Cherokee) without \f(CW\*(C`[reorder Cher]\*(C'\fR,
de (German),
en (English),
fr (French),
ga (Irish),
id (Indonesian),
it (Italian),
ka (Georgian) without \f(CW\*(C`[reorder Geor]\*(C'\fR,
mn (Mongolian) without \f(CW\*(C`[reorder Cyrl Mong]\*(C'\fR,
ms (Malay),
nl (Dutch),
pt (Portuguese),
ru (Russian) without \f(CW\*(C`[reorder Cyrl]\*(C'\fR,
sw (Swahili),
zu (Zulu).
.PP
\&\fBNote\fR
.PP
[1] ja: Ideographs are sorted in \s-1JIS X 0208\s0 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 \f(CW\*(C`(variable => \*(AqNon\-ignorable\*(Aq)\*(C'\fR,
and then \f(CW\*(C`katakana_before_hiragana\*(C'\fR has no effect.
.PP
[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.
.PP
[3] zh_\|_pinyin, zh_\|_stroke and zh_\|_zhuyin: implemented alt='short',
where a smaller number of ideographs are tailored.
.SS "A list of variant codes and their aliases"
.IX Subsection "A list of variant codes and their aliases"
.Vb 10
\& variant code alias
\& \-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-
\& dictionary dict
\& phonebook phone phonebk
\& reformed reform
\& traditional trad
\& \-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-
\& big5han big5
\& gb2312han gb2312
\& pinyin
\& stroke
\& zhuyin
\& \-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-
.Ve
.PP
Note: 'pinyin' is Han in Latin, 'zhuyin' is Han in Bopomofo.
.SH "INSTALL"
.IX Header "INSTALL"
Installation of \f(CW\*(C`Unicode::Collate::Locale\*(C'\fR requires \fICollate/Locale.pm\fR,
\&\fICollate/Locale/*.pm\fR, \fICollate/CJK/*.pm\fR and \fICollate/allkeys.txt\fR.
On building, \f(CW\*(C`Unicode::Collate::Locale\*(C'\fR doesn't require
any of \fIdata/*.txt\fR, \fIgendata/*\fR, and \fImklocale\fR.
Tests for \f(CW\*(C`Unicode::Collate::Locale\*(C'\fR are named \fIt/loc_*.t\fR.
.SH "CAVEAT"
.IX Header "CAVEAT"
.IP "Tailoring is not maximum" 4
.IX Item "Tailoring 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 (\f(CW\*(C`U+FF37\*(C'\fR), W with acute (\f(CW\*(C`U+1E82\*(C'\fR), etc. are not
tailored. The result may depend on whether source strings are
normalized or not, and whether decomposed or composed.
Thus \f(CW\*(C`(normalization => undef)\*(C'\fR is less preferred.
.IP "Collation reordering is not supported" 4
.IX Item "Collation reordering is not supported"
The order of any groups including scripts is not changed.
.SS "Reference"
.IX Subsection "Reference"
.Vb 10
\& 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=\*(Aqpinyin\*(Aq alt=\*(Aqshort\*(Aq)
\& zh_\|_stroke 22.1 = 1.9.1 (type=\*(Aqstroke\*(Aq alt=\*(Aqshort\*(Aq)
\& zh_\|_zhuyin 22.1 = 22 (type=\*(Aqzhuyin\*(Aq alt=\*(Aqshort\*(Aq)
\& \-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-
.Ve
.PP
[*] http://www.unicode.org/repos/cldr/tags/latest/seed/collation/
.SH "AUTHOR"
.IX Header "AUTHOR"
The Unicode::Collate::Locale module for perl was written
by \s-1SADAHIRO\s0 Tomoyuki, <SADAHIRO@cpan.org>.
This module is Copyright(C) 2004\-2018, \s-1SADAHIRO\s0 Tomoyuki. Japan.
All rights reserved.
.PP
This module is free software; you can redistribute it and/or
modify it under the same terms as Perl itself.
.SH "SEE ALSO"
.IX Header "SEE ALSO"
.IP "Unicode Collation Algorithm \- \s-1UTS\s0 #10" 4
.IX Item "Unicode Collation Algorithm - UTS #10"
<http://www.unicode.org/reports/tr10/>
.IP "The Default Unicode Collation Element Table (\s-1DUCET\s0)" 4
.IX Item "The Default Unicode Collation Element Table (DUCET)"
<http://www.unicode.org/Public/UCA/latest/allkeys.txt>
.IP "Unicode Locale Data Markup Language (\s-1LDML\s0) \- \s-1UTS\s0 #35" 4
.IX Item "Unicode Locale Data Markup Language (LDML) - UTS #35"
<http://www.unicode.org/reports/tr35/>
.IP "\s-1CLDR\s0 \- Unicode Common Locale Data Repository" 4
.IX Item "CLDR - Unicode Common Locale Data Repository"
<http://cldr.unicode.org/>
.IP "Unicode::Collate" 4
.IX Item "Unicode::Collate"
.PD 0
.IP "Unicode::Normalize" 4
.IX Item "Unicode::Normalize"