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36 lines
820 B
36 lines
820 B
10 years ago
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'use strict';
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var _ = require('lodash');
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/**
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* Determines whether a string contains only hexadecimal values
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*
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* @param {string} value
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* @return {boolean} true if the string is the hexa representation of a number
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*/
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var isHexa = function isHexa(value) {
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if (!_.isString(value)) {
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return false;
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}
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return /^[0-9a-fA-F]+$/.test(value);
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};
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module.exports = {
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/**
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* Test if an argument is a valid JSON object. If it is, returns a truthy
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* value (the json object decoded), so no double JSON.parse call is necessary
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*
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* @param {string} arg
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* @return {Object|boolean} false if the argument is not a JSON string.
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*/
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isValidJson: function isValidJson(arg) {
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try {
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return JSON.parse(arg);
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} catch (e) {
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return false;
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}
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},
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isHexa: isHexa,
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isHexaString: isHexa
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};
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