41 lines
989 B
JavaScript
41 lines
989 B
JavaScript
'use strict';
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var _ = require('lodash');
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module.exports = {
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isValidJson: function isValidJson(arg) {
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try {
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JSON.parse(arg);
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return true;
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} catch (e) {
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return false;
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}
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},
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emptyBuffer: function emptyBuffer(bytes) {
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var result = new Buffer(bytes);
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for (var i = 0; i < bytes; i++) {
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result.write('\0', i);
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}
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},
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integerAsBuffer: function integerAsBuffer(integer) {
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var bytes = [];
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bytes.push((integer >> 24) & 0xff);
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bytes.push((integer >> 16) & 0xff);
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bytes.push((integer >> 8) & 0xff);
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bytes.push(integer & 0xff);
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return new Buffer(bytes);
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},
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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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integerFromBuffer: function integerFromBuffer(buffer) {
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return buffer[0] << 24 | buffer[1] << 16 | buffer[2] << 8 | buffer[3];
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},
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bufferToHex: function bufferToHex(buffer) {
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return buffer.toString('hex');
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}
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};
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