| 1 | ;
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| 2 | Object.defineProperty(exports, "__esModule", { value: true });
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| 3 | exports.hexToBn = void 0;
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| 4 | const bn_js_1 = require("../bn/bn.js");
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| 5 | const stripPrefix_js_1 = require("./stripPrefix.js");
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| 6 | /**
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| 7 | * @name hexToBn
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| 8 | * @summary Creates a BN.js object from a hex string.
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| 9 | * @description
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| 10 | * `null` inputs returns a `BN(0)` result. Hex input values return the actual value converted to a BN. Anything that is not a hex string (including the `0x` prefix) throws an error.
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| 11 | * @param _value The value to convert
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| 12 | * @param _options Options to pass while converting
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| 13 | * @param _options.isLe Convert using Little Endian
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| 14 | * @param _options.isNegative Convert using two's complement
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| 15 | * @example
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| 16 | * <BR>
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| 17 | *
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| 18 | * ```javascript
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| 19 | * import { hexToBn } from '@polkadot/util';
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| 20 | *
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| 21 | * hexToBn('0x123480001f'); // => BN(0x123480001f)
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| 22 | * ```
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| 23 | */
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| 24 | function hexToBn(value, { isLe = false, isNegative = false } = {}) {
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| 25 | if (!value || value === '0x') {
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| 26 | return new bn_js_1.BN(0);
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| 27 | }
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| 28 | const stripped = (0, stripPrefix_js_1.hexStripPrefix)(value);
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| 29 | const bn = new bn_js_1.BN(stripped, 16, isLe ? 'le' : 'be');
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| 30 | // fromTwos takes as parameter the number of bits, which is the hex length
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| 31 | // multiplied by 4 (2 bytes being 8 bits)
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| 32 | return isNegative
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| 33 | ? bn.fromTwos(stripped.length * 4)
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| 34 | : bn;
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| 35 | }
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| 36 | exports.hexToBn = hexToBn;
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