str_shorten
Version:
Shorten string by character length with word boundary supported
169 lines (168 loc) • 5.13 kB
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<a href="../index.html">all files</a> / <a href="index.html">dist-modules/</a> index.js
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<span class="cline-any cline-neutral"> </span></td><td class="text"><pre class="prettyprint lang-js">'use strict';
module.exports = function (str, maxChars, options) {
var _optionsDefault = {
wordBoundary: true,
chars: [' ', '-'],
endSymbols: '...'
};
var charRegx = /\s* \s*|\s*-\s*/;
var words = str.split(charRegx);
var retStr = '';
options = Object.assign(_optionsDefault, options);
function appendEndSymbols(strlen, maxChars, endSymbols) /* istanbul ignore next */{
return strlen > maxChars ? endSymbols : <span class="branch-1 cbranch-skip" title="branch not covered" >'';</span>
}
if (!maxChars || str.length <= maxChars) {
return str;
}
if (!options.wordBoundary) {
return str.substring(0, maxChars) + appendEndSymbols(str.length, maxChars, options.endSymbols);
}
for (var i = 0; i < words.length; i++) {
if ((retStr + ' ' + words[i]).length > maxChars) {
return str.substring(0, retStr.length) + appendEndSymbols(str.length, retStr.length, options.endSymbols);
} else {
retStr = i === 0 ? words[0] : retStr + (' ' + words[i]);
}
}
};</pre></td></tr>
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