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Diffstat (limited to 'ui/app/util.js')
| -rw-r--r-- | ui/app/util.js | 326 |
1 files changed, 0 insertions, 326 deletions
diff --git a/ui/app/util.js b/ui/app/util.js deleted file mode 100644 index 3237e5feb..000000000 --- a/ui/app/util.js +++ /dev/null @@ -1,326 +0,0 @@ -const abi = require('human-standard-token-abi') -const ethUtil = require('ethereumjs-util') -const hexToBn = require('../../app/scripts/lib/hex-to-bn') -import { DateTime } from 'luxon' - -const MIN_GAS_PRICE_GWEI_BN = new ethUtil.BN(1) -const GWEI_FACTOR = new ethUtil.BN(1e9) -const MIN_GAS_PRICE_BN = MIN_GAS_PRICE_GWEI_BN.mul(GWEI_FACTOR) - -// formatData :: ( date: <Unix Timestamp> ) -> String -function formatDate (date, format = 'M/d/y \'at\' T') { - return DateTime.fromMillis(date).toFormat(format) -} - -var valueTable = { - wei: '1000000000000000000', - kwei: '1000000000000000', - mwei: '1000000000000', - gwei: '1000000000', - szabo: '1000000', - finney: '1000', - ether: '1', - kether: '0.001', - mether: '0.000001', - gether: '0.000000001', - tether: '0.000000000001', -} -var bnTable = {} -for (var currency in valueTable) { - bnTable[currency] = new ethUtil.BN(valueTable[currency], 10) -} - -module.exports = { - valuesFor: valuesFor, - addressSummary: addressSummary, - miniAddressSummary: miniAddressSummary, - isAllOneCase: isAllOneCase, - isValidAddress: isValidAddress, - isValidENSAddress, - numericBalance: numericBalance, - parseBalance: parseBalance, - formatBalance: formatBalance, - generateBalanceObject: generateBalanceObject, - dataSize: dataSize, - readableDate: readableDate, - normalizeToWei: normalizeToWei, - normalizeEthStringToWei: normalizeEthStringToWei, - normalizeNumberToWei: normalizeNumberToWei, - valueTable: valueTable, - bnTable: bnTable, - isHex: isHex, - formatDate, - bnMultiplyByFraction, - getTxFeeBn, - shortenBalance, - getContractAtAddress, - exportAsFile: exportAsFile, - isInvalidChecksumAddress, - allNull, - getTokenAddressFromTokenObject, - checksumAddress, - addressSlicer, - isEthNetwork, -} - -function isEthNetwork (netId) { - if (!netId || netId === '1' || netId === '3' || netId === '4' || netId === '42' || netId === '5777') { - return true - } - - return false -} - -function valuesFor (obj) { - if (!obj) return [] - return Object.keys(obj) - .map(function (key) { return obj[key] }) -} - -function addressSummary (address, firstSegLength = 10, lastSegLength = 4, includeHex = true) { - if (!address) return '' - let checked = checksumAddress(address) - if (!includeHex) { - checked = ethUtil.stripHexPrefix(checked) - } - return checked ? checked.slice(0, firstSegLength) + '...' + checked.slice(checked.length - lastSegLength) : '...' -} - -function miniAddressSummary (address) { - if (!address) return '' - var checked = checksumAddress(address) - return checked ? checked.slice(0, 4) + '...' + checked.slice(-4) : '...' -} - -function isValidAddress (address, network) { - var prefixed = ethUtil.addHexPrefix(address) - if (address === '0x0000000000000000000000000000000000000000') return false - return (isAllOneCase(prefixed) && ethUtil.isValidAddress(prefixed)) || ethUtil.isValidChecksumAddress(prefixed) -} - -function isValidENSAddress (address) { - return address.match(/^.{7,}\.(eth|test)$/) -} - -function isInvalidChecksumAddress (address) { - var prefixed = ethUtil.addHexPrefix(address) - if (address === '0x0000000000000000000000000000000000000000') return false - return !isAllOneCase(prefixed) && !ethUtil.isValidChecksumAddress(prefixed) && ethUtil.isValidAddress(prefixed) -} - -function isAllOneCase (address) { - if (!address) return true - var lower = address.toLowerCase() - var upper = address.toUpperCase() - return address === lower || address === upper -} - -// Takes wei Hex, returns wei BN, even if input is null -function numericBalance (balance) { - if (!balance) return new ethUtil.BN(0, 16) - var stripped = ethUtil.stripHexPrefix(balance) - return new ethUtil.BN(stripped, 16) -} - -// Takes hex, returns [beforeDecimal, afterDecimal] -function parseBalance (balance) { - var beforeDecimal, afterDecimal - const wei = numericBalance(balance) - var weiString = wei.toString() - const trailingZeros = /0+$/ - - beforeDecimal = weiString.length > 18 ? weiString.slice(0, weiString.length - 18) : '0' - afterDecimal = ('000000000000000000' + wei).slice(-18).replace(trailingZeros, '') - if (afterDecimal === '') { afterDecimal = '0' } - return [beforeDecimal, afterDecimal] -} - -// Takes wei hex, returns an object with three properties. -// Its "formatted" property is what we generally use to render values. -function formatBalance (balance, decimalsToKeep, needsParse = true, ticker = 'ETH') { - var parsed = needsParse ? parseBalance(balance) : balance.split('.') - var beforeDecimal = parsed[0] - var afterDecimal = parsed[1] - var formatted = 'None' - if (decimalsToKeep === undefined) { - if (beforeDecimal === '0') { - if (afterDecimal !== '0') { - var sigFigs = afterDecimal.match(/^0*(.{2})/) // default: grabs 2 most significant digits - if (sigFigs) { afterDecimal = sigFigs[0] } - formatted = '0.' + afterDecimal + ` ${ticker}` - } - } else { - formatted = beforeDecimal + '.' + afterDecimal.slice(0, 3) + ` ${ticker}` - } - } else { - afterDecimal += Array(decimalsToKeep).join('0') - formatted = beforeDecimal + '.' + afterDecimal.slice(0, decimalsToKeep) + ` ${ticker}` - } - return formatted -} - - -function generateBalanceObject (formattedBalance, decimalsToKeep = 1) { - var balance = formattedBalance.split(' ')[0] - var label = formattedBalance.split(' ')[1] - var beforeDecimal = balance.split('.')[0] - var afterDecimal = balance.split('.')[1] - var shortBalance = shortenBalance(balance, decimalsToKeep) - - if (beforeDecimal === '0' && afterDecimal.substr(0, 5) === '00000') { - // eslint-disable-next-line eqeqeq - if (afterDecimal == 0) { - balance = '0' - } else { - balance = '<1.0e-5' - } - } else if (beforeDecimal !== '0') { - balance = `${beforeDecimal}.${afterDecimal.slice(0, decimalsToKeep)}` - } - - return { balance, label, shortBalance } -} - -function shortenBalance (balance, decimalsToKeep = 1) { - var truncatedValue - var convertedBalance = parseFloat(balance) - if (convertedBalance > 1000000) { - truncatedValue = (balance / 1000000).toFixed(decimalsToKeep) - return `${truncatedValue}m` - } else if (convertedBalance > 1000) { - truncatedValue = (balance / 1000).toFixed(decimalsToKeep) - return `${truncatedValue}k` - } else if (convertedBalance === 0) { - return '0' - } else if (convertedBalance < 0.001) { - return '<0.001' - } else if (convertedBalance < 1) { - var stringBalance = convertedBalance.toString() - if (stringBalance.split('.')[1].length > 3) { - return convertedBalance.toFixed(3) - } else { - return stringBalance - } - } else { - return convertedBalance.toFixed(decimalsToKeep) - } -} - -function dataSize (data) { - var size = data ? ethUtil.stripHexPrefix(data).length : 0 - return size + ' bytes' -} - -// Takes a BN and an ethereum currency name, -// returns a BN in wei -function normalizeToWei (amount, currency) { - try { - return amount.mul(bnTable.wei).div(bnTable[currency]) - } catch (e) {} - return amount -} - -function normalizeEthStringToWei (str) { - const parts = str.split('.') - let eth = new ethUtil.BN(parts[0], 10).mul(bnTable.wei) - if (parts[1]) { - var decimal = parts[1] - while (decimal.length < 18) { - decimal += '0' - } - if (decimal.length > 18) { - decimal = decimal.slice(0, 18) - } - const decimalBN = new ethUtil.BN(decimal, 10) - eth = eth.add(decimalBN) - } - return eth -} - -var multiple = new ethUtil.BN('10000', 10) -function normalizeNumberToWei (n, currency) { - var enlarged = n * 10000 - var amount = new ethUtil.BN(String(enlarged), 10) - return normalizeToWei(amount, currency).div(multiple) -} - -function readableDate (ms) { - var date = new Date(ms) - var month = date.getMonth() - var day = date.getDate() - var year = date.getFullYear() - var hours = date.getHours() - var minutes = '0' + date.getMinutes() - var seconds = '0' + date.getSeconds() - - var dateStr = `${month}/${day}/${year}` - var time = `${hours}:${minutes.substr(-2)}:${seconds.substr(-2)}` - return `${dateStr} ${time}` -} - -function isHex (str) { - return Boolean(str.match(/^(0x)?[0-9a-fA-F]+$/)) -} - -function bnMultiplyByFraction (targetBN, numerator, denominator) { - const numBN = new ethUtil.BN(numerator) - const denomBN = new ethUtil.BN(denominator) - return targetBN.mul(numBN).div(denomBN) -} - -function getTxFeeBn (gas, gasPrice = MIN_GAS_PRICE_BN.toString(16), blockGasLimit) { - const gasBn = hexToBn(gas) - const gasPriceBn = hexToBn(gasPrice) - const txFeeBn = gasBn.mul(gasPriceBn) - - return txFeeBn.toString(16) -} - -function getContractAtAddress (tokenAddress) { - return global.eth.contract(abi).at(tokenAddress) -} - -function exportAsFile (filename, data, type = 'text/csv') { - // source: https://stackoverflow.com/a/33542499 by Ludovic Feltz - const blob = new Blob([data], {type}) - if (window.navigator.msSaveOrOpenBlob) { - window.navigator.msSaveBlob(blob, filename) - } else { - const elem = window.document.createElement('a') - elem.target = '_blank' - elem.href = window.URL.createObjectURL(blob) - elem.download = filename - document.body.appendChild(elem) - elem.click() - document.body.removeChild(elem) - } -} - -function allNull (obj) { - return Object.entries(obj).every(([key, value]) => value === null) -} - -function getTokenAddressFromTokenObject (token) { - return Object.values(token)[0].address.toLowerCase() -} - -/** - * Safely checksumms a potentially-null address - * - * @param {String} [address] - address to checksum - * @param {String} [network] - network id - * @returns {String} - checksummed address - * - */ -function checksumAddress (address, network) { - const checksummed = address ? ethUtil.toChecksumAddress(address) : '' - return checksummed -} - -function addressSlicer (address = '') { - if (address.length < 11) { - return address - } - - return `${address.slice(0, 6)}...${address.slice(-4)}` -} |