e8ccc9aa79
* Pull api-* packages into lerna repo * Bootstrap with hoist * Update jest alias config * Add api-jsonrpc * Pull in jsonrpc * Update badges * Don't hoist, use workspaces * .eslintrc to root * Cleanups, build from root * Shorthand commands * Update to @polkadot/dev 0.9.1 * Update description
34 lines
829 B
JavaScript
34 lines
829 B
JavaScript
// ISC, Copyright 2017 Jaco Greeff
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// @flow
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const { hexAddPrefix, hexHasPrefix, hexStripPrefix } = require('@polkadot/util/hex');
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const H64_ZERO: string = '00000000000000000000000000000000';
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const H128_ZERO: string = `${H64_ZERO}${H64_ZERO}`;
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const H256_ZERO: string = `${H128_ZERO}${H128_ZERO}`;
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// const H512_ZERO: string = `${H256_ZERO}${H256_ZERO}`;
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function leftHexPad (value: ?string, bitLength: number): string {
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const length = 2 * bitLength / 8;
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if (hexHasPrefix(value)) {
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value = hexStripPrefix(value);
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}
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return hexAddPrefix(`${H256_ZERO}${value || ''}`.slice(-length));
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}
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function formatH160 (value: ?string): string {
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return leftHexPad(value, 160);
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}
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function formatH256 (value: ?string): string {
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return leftHexPad(value, 256);
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}
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module.exports = {
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leftHexPad,
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formatH160,
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formatH256
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};
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