111 lines
2.9 KiB
JavaScript
111 lines
2.9 KiB
JavaScript
'use strict';
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var Hash = require('./crypto/hash');
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var BufferReader = require('./encoding/bufferreader');
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var BufferWriter = require('./encoding/bufferwriter');
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var Varint = require('./encoding/varint');
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var Transaction = require('./transaction');
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var Blockheader = require('./blockheader');
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var Block = function Block(magicnum, blocksize, blockheader, txsvi, txs) {
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if (!(this instanceof Block))
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return new Block(magicnum, blocksize, blockheader, txsvi, txs);
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if (typeof magicnum === 'number') {
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this.set({
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magicnum: magicnum,
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blocksize: blocksize,
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blockheader: blockheader,
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txsvi: txsvi,
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txs: txs
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});
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} else if (Buffer.isBuffer(magicnum)) {
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var blockbuf = magicnum;
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this.fromBuffer(blockbuf);
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} else if (magicnum) {
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var obj = magicnum;
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}
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};
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Block.prototype.set = function(obj) {
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this.magicnum = typeof obj.magicnum !== 'undefined' ? obj.magicnum : this.magicnum;
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this.blocksize = typeof obj.blocksize !== 'undefined' ? obj.blocksize : this.blocksize;
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this.blockheader = obj.blockheader || this.blockheader;
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this.txsvi = obj.txsvi || this.txsvi;
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this.txs = obj.txs || this.txs;
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return this;
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};
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Block.prototype.fromJSON = function(json) {
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var txs = [];
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json.txs.forEach(function(tx) {
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txs.push(Transaction().fromJSON(tx));
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});
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this.set({
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magicnum: json.magicnum,
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blocksize: json.blocksize,
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blockheader: Blockheader().fromJSON(json.blockheader),
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txsvi: Varint().fromJSON(json.txsvi),
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txs: txs
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});
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return this;
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};
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Block.prototype.toJSON = function() {
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var txs = [];
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this.txs.forEach(function(tx) {
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txs.push(tx.toJSON());
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});
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return {
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magicnum: this.magicnum,
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blocksize: this.blocksize,
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blockheader: this.blockheader.toJSON(),
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txsvi: this.txsvi.toJSON(),
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txs: txs
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};
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};
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Block.prototype.fromBuffer = function(buf) {
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return this.fromBufferReader(BufferReader(buf));
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};
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Block.prototype.fromBufferReader = function(br) {
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this.magicnum = br.readUInt32LE();
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this.blocksize = br.readUInt32LE();
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this.blockheader = Blockheader().fromBufferReader(br);
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this.txsvi = Varint(br.readVarintBuf());
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var txslen = this.txsvi.toNumber();
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this.txs = [];
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for (var i = 0; i < txslen; i++) {
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this.txs.push(Transaction().fromBufferReader(br));
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}
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return this;
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};
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Block.prototype.toBuffer = function() {
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return this.toBufferWriter().concat();
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};
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Block.prototype.toBufferWriter = function(bw) {
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if (!bw)
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bw = new BufferWriter();
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bw.writeUInt32LE(this.magicnum);
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bw.writeUInt32LE(this.blocksize);
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bw.write(this.blockheader.toBuffer());
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bw.write(this.txsvi.buf);
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var txslen = this.txsvi.toNumber();
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for (var i = 0; i < txslen; i++) {
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this.txs[i].toBufferWriter(bw);
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}
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return bw;
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};
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Block.prototype.hash = function() {
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return Hash.sha256sha256(this.blockheader.toBuffer());
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};
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Block.prototype.id = function() {
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return BufferReader(this.hash()).reverse().read();
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};
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module.exports = Block;
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