64 lines
1.9 KiB
JavaScript
64 lines
1.9 KiB
JavaScript
// Copyright 2015, 2016 Parity Technologies (UK) Ltd.
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// This file is part of Parity.
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// Parity is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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// Parity is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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// You should have received a copy of the GNU General Public License
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// along with Parity. If not, see <http://www.gnu.org/licenses/>.
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import { range } from 'lodash';
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export function bytesToHex (bytes) {
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return '0x' + bytes.map((b) => ('0' + b.toString(16)).slice(-2)).join('');
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}
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export function hex2Ascii (_hex) {
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const hex = /^(?:0x)?(.*)$/.exec(_hex.toString())[1];
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let str = '';
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for (let i = 0; i < hex.length; i += 2) {
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str += String.fromCharCode(parseInt(hex.substr(i, 2), 16));
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}
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return str;
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}
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export function bytesToAscii (bytes) {
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return bytes.map((b) => String.fromCharCode(b % 512)).join('');
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}
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export function asciiToHex (string) {
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return '0x' + string.split('').map((s) => s.charCodeAt(0).toString(16)).join('');
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}
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export function padRight (input, length) {
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const value = toHex(input).substr(2, length * 2);
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return '0x' + value + range(length * 2 - value.length).map(() => '0').join('');
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}
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export function padLeft (input, length) {
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const value = toHex(input).substr(2, length * 2);
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return '0x' + range(length * 2 - value.length).map(() => '0').join('') + value;
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}
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export function toHex (str) {
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if (str && str.toString) {
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str = str.toString(16);
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}
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if (str && str.substr(0, 2) === '0x') {
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return str.toLowerCase();
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}
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return `0x${(str || '').toLowerCase()}`;
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}
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