mirror of https://github.com/jkjoy/sunpeiwen.git
51 lines
1.5 KiB
JavaScript
51 lines
1.5 KiB
JavaScript
/*
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* To Title Case 2.1 – http://individed.com/code/to-title-case/
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* Copyright © 2008–2013 David Gouch. Licensed under the MIT License.
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*
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* modifications by @rvagg Apr-2014
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*/
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//String.prototype.toTitleCase = function(){
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var smallWords = /^(a|an|and|as|at|but|by|en|for|if|in|nor|of|on|or|per|the|to|vs?\.?|via)$/i;
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module.exports = function toTitleCase(str){
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return titleCase(str, smallWords)
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}
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module.exports.toTitleCase = module.exports
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var laxWords = require('./articles').concat(require('./prepositions')).concat(require('./conjunctions'))
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.concat(smallWords.source.replace(/(^\^\(|\)\$$)/g, '').split('|'))
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.concat(['is']) // a personal preference
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, laxWordsRe = new RegExp('^(' + laxWords.join('|') + ')$', 'i')
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module.exports.toLaxTitleCase = function toLaxTitleCase(str){
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return titleCase(str, laxWordsRe)
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}
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function titleCase (str, smallWords) {
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if (!str)
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return str
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return str.replace(/[A-Za-z0-9\u00C0-\u00FF]+[^\s-]*/g, function(match, index, title){
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if (index > 0 && index + match.length !== title.length &&
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match.search(smallWords) > -1 && title.charAt(index - 2) !== ':' &&
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(title.charAt(index + match.length) !== '-' || title.charAt(index - 1) === '-') &&
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title.charAt(index - 1).search(/[^\s-]/) < 0) {
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return match.toLowerCase();
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}
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if (match.substr(1).search(/[A-Z]|\../) > -1) {
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return match;
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}
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return match.charAt(0).toUpperCase() + match.substr(1);
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});
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}
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