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56 lines
1.0 KiB
56 lines
1.0 KiB
'use strict'; |
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function preserveCamelCase(str) { |
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var isLastCharLower = false; |
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for (var i = 0; i < str.length; i++) { |
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var c = str.charAt(i); |
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if (isLastCharLower && (/[a-zA-Z]/).test(c) && c.toUpperCase() === c) { |
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str = str.substr(0, i) + '-' + str.substr(i); |
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isLastCharLower = false; |
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i++; |
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} else { |
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isLastCharLower = (c.toLowerCase() === c); |
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} |
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} |
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return str; |
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} |
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module.exports = function () { |
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var str = [].map.call(arguments, function (str) { |
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return str.trim(); |
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}).filter(function (str) { |
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return str.length; |
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}).join('-'); |
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if (!str.length) { |
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return ''; |
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} |
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if (str.length === 1) { |
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return str.toLowerCase(); |
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} |
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if (!(/[_.\- ]+/).test(str)) { |
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if (str === str.toUpperCase()) { |
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return str.toLowerCase(); |
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} |
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if (str[0] !== str[0].toLowerCase()) { |
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return str[0].toLowerCase() + str.slice(1); |
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} |
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return str; |
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} |
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str = preserveCamelCase(str); |
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return str |
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.replace(/^[_.\- ]+/, '') |
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.toLowerCase() |
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.replace(/[_.\- ]+(\w|$)/g, function (m, p1) { |
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return p1.toUpperCase(); |
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}); |
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};
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