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51 lines
1.6 KiB
51 lines
1.6 KiB
"use strict";
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Object.defineProperty(exports, "__esModule", { value: true });
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const networks_1 = require("../networks");
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const bscript = require("../script");
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const lazy = require("./lazy");
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const typef = require('typeforce');
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const OPS = bscript.OPS;
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function stacksEqual(a, b) {
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if (a.length !== b.length)
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return false;
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return a.every((x, i) => {
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return x.equals(b[i]);
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});
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}
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// output: OP_RETURN ...
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function p2data(a, opts) {
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if (!a.data && !a.output)
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throw new TypeError('Not enough data');
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opts = Object.assign({ validate: true }, opts || {});
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typef({
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network: typef.maybe(typef.Object),
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output: typef.maybe(typef.Buffer),
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data: typef.maybe(typef.arrayOf(typef.Buffer)),
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}, a);
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const network = a.network || networks_1.bitcoin;
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const o = { network };
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lazy.prop(o, 'output', () => {
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if (!a.data)
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return;
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return bscript.compile([OPS.OP_RETURN].concat(a.data));
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});
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lazy.prop(o, 'data', () => {
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if (!a.output)
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return;
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return bscript.decompile(a.output).slice(1);
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});
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// extended validation
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if (opts.validate) {
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if (a.output) {
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const chunks = bscript.decompile(a.output);
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if (chunks[0] !== OPS.OP_RETURN)
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throw new TypeError('Output is invalid');
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if (!chunks.slice(1).every(typef.Buffer))
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throw new TypeError('Output is invalid');
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if (a.data && !stacksEqual(a.data, o.data))
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throw new TypeError('Data mismatch');
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}
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}
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return Object.assign(o, a);
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}
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exports.p2data = p2data;
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