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import baseLogger from './logger.js';
// definition http://translate.sourceforge.net/wiki/l10n/pluralforms
/* eslint-disable */
let sets = [
{ lngs: ['ach','ak','am','arn','br','fil','gun','ln','mfe','mg','mi','oc', 'pt', 'pt-BR',
'tg','ti','tr','uz','wa'], nr: [1,2], fc: 1 },
{ lngs: ['af','an','ast','az','bg','bn','ca','da','de','dev','el','en',
'eo','es','et','eu','fi','fo','fur','fy','gl','gu','ha','hi',
'hu','hy','ia','it','kn','ku','lb','mai','ml','mn','mr','nah','nap','nb',
'ne','nl','nn','no','nso','pa','pap','pms','ps','pt-PT','rm','sco',
'se','si','so','son','sq','sv','sw','ta','te','tk','ur','yo'], nr: [1,2], fc: 2 },
{ lngs: ['ay','bo','cgg','fa','id','ja','jbo','ka','kk','km','ko','ky','lo',
'ms','sah','su','th','tt','ug','vi','wo','zh'], nr: [1], fc: 3 },
{ lngs: ['be','bs', 'cnr', 'dz','hr','ru','sr','uk'], nr: [1,2,5], fc: 4 },
{ lngs: ['ar'], nr: [0,1,2,3,11,100], fc: 5 },
{ lngs: ['cs','sk'], nr: [1,2,5], fc: 6 },
{ lngs: ['csb','pl'], nr: [1,2,5], fc: 7 },
{ lngs: ['cy'], nr: [1,2,3,8], fc: 8 },
{ lngs: ['fr'], nr: [1,2], fc: 9 },
{ lngs: ['ga'], nr: [1,2,3,7,11], fc: 10 },
{ lngs: ['gd'], nr: [1,2,3,20], fc: 11 },
{ lngs: ['is'], nr: [1,2], fc: 12 },
{ lngs: ['jv'], nr: [0,1], fc: 13 },
{ lngs: ['kw'], nr: [1,2,3,4], fc: 14 },
{ lngs: ['lt'], nr: [1,2,10], fc: 15 },
{ lngs: ['lv'], nr: [1,2,0], fc: 16 },
{ lngs: ['mk'], nr: [1,2], fc: 17 },
{ lngs: ['mnk'], nr: [0,1,2], fc: 18 },
{ lngs: ['mt'], nr: [1,2,11,20], fc: 19 },
{ lngs: ['or'], nr: [2,1], fc: 2 },
{ lngs: ['ro'], nr: [1,2,20], fc: 20 },
{ lngs: ['sl'], nr: [5,1,2,3], fc: 21 },
{ lngs: ['he'], nr: [1,2,20,21], fc: 22 }
]
let _rulesPluralsTypes = {
1: function(n) {return Number(n > 1);},
2: function(n) {return Number(n != 1);},
3: function(n) {return 0;},
4: function(n) {return Number(n%10==1 && n%100!=11 ? 0 : n%10>=2 && n%10<=4 && (n%100<10 || n%100>=20) ? 1 : 2);},
5: function(n) {return Number(n==0 ? 0 : n==1 ? 1 : n==2 ? 2 : n%100>=3 && n%100<=10 ? 3 : n%100>=11 ? 4 : 5);},
6: function(n) {return Number((n==1) ? 0 : (n>=2 && n<=4) ? 1 : 2);},
7: function(n) {return Number(n==1 ? 0 : n%10>=2 && n%10<=4 && (n%100<10 || n%100>=20) ? 1 : 2);},
8: function(n) {return Number((n==1) ? 0 : (n==2) ? 1 : (n != 8 && n != 11) ? 2 : 3);},
9: function(n) {return Number(n >= 2);},
10: function(n) {return Number(n==1 ? 0 : n==2 ? 1 : n<7 ? 2 : n<11 ? 3 : 4) ;},
11: function(n) {return Number((n==1 || n==11) ? 0 : (n==2 || n==12) ? 1 : (n > 2 && n < 20) ? 2 : 3);},
12: function(n) {return Number(n%10!=1 || n%100==11);},
13: function(n) {return Number(n !== 0);},
14: function(n) {return Number((n==1) ? 0 : (n==2) ? 1 : (n == 3) ? 2 : 3);},
15: function(n) {return Number(n%10==1 && n%100!=11 ? 0 : n%10>=2 && (n%100<10 || n%100>=20) ? 1 : 2);},
16: function(n) {return Number(n%10==1 && n%100!=11 ? 0 : n !== 0 ? 1 : 2);},
17: function(n) {return Number(n==1 || n%10==1 ? 0 : 1);},
18: function(n) {return Number(n==0 ? 0 : n==1 ? 1 : 2);},
19: function(n) {return Number(n==1 ? 0 : n==0 || ( n%100>1 && n%100<11) ? 1 : (n%100>10 && n%100<20 ) ? 2 : 3);},
20: function(n) {return Number(n==1 ? 0 : (n==0 || (n%100 > 0 && n%100 < 20)) ? 1 : 2);},
21: function(n) {return Number(n%100==1 ? 1 : n%100==2 ? 2 : n%100==3 || n%100==4 ? 3 : 0); },
22: function(n) {return Number(n==1 ? 0 : n==2 ? 1 : (n<0 || n>10) && n%10==0 ? 2 : 3); }
};
/* eslint-enable */
function createRules() {
const rules = {};
sets.forEach((set) => {
set.lngs.forEach((l) => {
rules[l] = {
numbers: set.nr,
plurals: _rulesPluralsTypes[set.fc]
};
});
});
return rules;
}
class PluralResolver {
constructor(languageUtils, options = {}) {
this.languageUtils = languageUtils;
this.options = options;
this.logger = baseLogger.create('pluralResolver');
this.rules = createRules();
}
addRule(lng, obj) {
this.rules[lng] = obj;
}
getRule(code) {
return this.rules[code] || this.rules[this.languageUtils.getLanguagePartFromCode(code)];
}
needsPlural(code) {
const rule = this.getRule(code);
return rule && rule.numbers.length > 1;
}
getPluralFormsOfKey(code, key) {
const ret = [];
const rule = this.getRule(code);
if (!rule) return ret;
rule.numbers.forEach((n) => {
const suffix = this.getSuffix(code, n);
ret.push(`${key}${suffix}`);
});
return ret;
}
getSuffix(code, count) {
const rule = this.getRule(code);
if (rule) {
// if (rule.numbers.length === 1) return ''; // only singular
const idx = rule.noAbs ? rule.plurals(count) : rule.plurals(Math.abs(count));
let suffix = rule.numbers[idx];
// special treatment for lngs only having singular and plural
if (this.options.simplifyPluralSuffix && rule.numbers.length === 2 && rule.numbers[0] === 1) {
if (suffix === 2) {
suffix = 'plural';
} else if (suffix === 1) {
suffix = '';
}
}
const returnSuffix = () => (
this.options.prepend && suffix.toString() ? this.options.prepend + suffix.toString() : suffix.toString()
);
// COMPATIBILITY JSON
// v1
if (this.options.compatibilityJSON === 'v1') {
if (suffix === 1) return '';
if (typeof suffix === 'number') return `_plural_${suffix.toString()}`;
return returnSuffix();
} else if (/* v2 */ this.options.compatibilityJSON === 'v2') {
return returnSuffix();
} else if (/* v3 - gettext index */ this.options.simplifyPluralSuffix && rule.numbers.length === 2 && rule.numbers[0] === 1) {
return returnSuffix();
}
return this.options.prepend && idx.toString() ? this.options.prepend + idx.toString() : idx.toString();
}
this.logger.warn(`no plural rule found for: ${code}`);
return '';
}
}
export default PluralResolver;
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