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40 lines
1.1 KiB
40 lines
1.1 KiB
var lowerCase = require('lower-case')
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var NON_WORD_REGEXP = require('./vendor/non-word-regexp')
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var CAMEL_CASE_REGEXP = require('./vendor/camel-case-regexp')
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var CAMEL_CASE_UPPER_REGEXP = require('./vendor/camel-case-upper-regexp')
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/**
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* Sentence case a string.
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*
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* @param {string} str
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* @param {string} locale
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* @param {string} replacement
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* @return {string}
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*/
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module.exports = function (str, locale, replacement) {
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if (str == null) {
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return ''
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}
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replacement = typeof replacement !== 'string' ? ' ' : replacement
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function replace (match, index, value) {
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if (index === 0 || index === (value.length - match.length)) {
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return ''
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}
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return replacement
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}
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str = String(str)
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// Support camel case ("camelCase" -> "camel Case").
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.replace(CAMEL_CASE_REGEXP, '$1 $2')
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// Support odd camel case ("CAMELCase" -> "CAMEL Case").
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.replace(CAMEL_CASE_UPPER_REGEXP, '$1 $2')
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// Remove all non-word characters and replace with a single space.
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.replace(NON_WORD_REGEXP, replace)
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// Lower case the entire string.
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return lowerCase(str, locale)
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}
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