74 lines
1.8 KiB
JavaScript
74 lines
1.8 KiB
JavaScript
var assert = require('assert')
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var base58check = require('./base58check')
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var networks = require('./networks')
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var Script = require('./script')
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function findScriptTypeByVersion(queryVersion) {
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for (var networkName in networks) {
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var network = networks[networkName]
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for (var versionName in network) {
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var version = network[versionName]
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if (version === queryVersion) {
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return versionName
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}
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}
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}
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}
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function Address(hash, version) {
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assert(Buffer.isBuffer(hash), 'Expected Buffer, got ' + hash)
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assert.strictEqual(hash.length, 20, 'Invalid hash length')
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assert.strictEqual(version & 0xFF, version, 'Invalid version byte')
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this.hash = hash
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this.version = version
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}
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// Import functions
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Address.fromBase58Check = function(string) {
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var decode = base58check.decode(string)
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return new Address(decode.payload, decode.version)
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}
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Address.fromScriptPubKey = function(script, network) {
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network = network || networks.bitcoin
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var type = script.getOutType()
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if (type === 'pubkeyhash') {
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return new Address(new Buffer(script.chunks[2]), network.pubKeyHash)
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}
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else if (type === 'scripthash') {
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return new Address(new Buffer(script.chunks[1]), network.scriptHash)
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}
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assert(false, type + ' has no matching Address')
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}
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// Export functions
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Address.prototype.toBase58Check = function () {
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return base58check.encode(this.hash, this.version)
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}
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Address.prototype.toScriptPubKey = function() {
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var scriptType = findScriptTypeByVersion(this.version)
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if (scriptType === 'pubKeyHash') {
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return Script.createPubKeyHashScriptPubKey(this.hash)
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}
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else if (scriptType === 'scriptHash') {
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return Script.createP2SHScriptPubKey(this.hash)
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}
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assert(false, this.toString() + ' has no matching script')
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}
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Address.prototype.toString = Address.prototype.toBase58Check
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module.exports = Address
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