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51 lines
1.0 KiB
JavaScript
51 lines
1.0 KiB
JavaScript
6 years ago
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/*!
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* get-value <https://github.com/jonschlinkert/get-value>
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*
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* Copyright (c) 2014-2015, Jon Schlinkert.
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* Licensed under the MIT License.
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*/
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module.exports = function(obj, prop, a, b, c) {
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if (!isObject(obj) || !prop) {
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return obj;
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}
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prop = toString(prop);
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// allowing for multiple properties to be passed as
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// a string or array, but much faster (3-4x) than doing
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// `[].slice.call(arguments)`
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if (a) prop += '.' + toString(a);
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if (b) prop += '.' + toString(b);
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if (c) prop += '.' + toString(c);
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if (prop in obj) {
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return obj[prop];
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}
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var segs = prop.split('.');
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var len = segs.length;
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var i = -1;
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while (obj && (++i < len)) {
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var key = segs[i];
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while (key[key.length - 1] === '\\') {
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key = key.slice(0, -1) + '.' + segs[++i];
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}
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obj = obj[key];
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}
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return obj;
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};
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function isObject(val) {
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return val !== null && (typeof val === 'object' || typeof val === 'function');
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}
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function toString(val) {
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if (!val) return '';
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if (Array.isArray(val)) {
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return val.join('.');
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}
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return val;
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}
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