84 lines
2.3 KiB
JavaScript
84 lines
2.3 KiB
JavaScript
'use strict';
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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 Script = require('./script');
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var Txin = function Txin(txidbuf, txoutnum, scriptvi, script, seqnum) {
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if (!(this instanceof Txin))
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return new Txin(txidbuf, txoutnum, scriptvi, script, seqnum);
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if (Buffer.isBuffer(txidbuf)) {
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if (txidbuf.length !== 32)
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throw new Error('txidbuf must be 32 bytes');
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this.txidbuf = txidbuf;
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this.txoutnum = txoutnum;
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this.scriptvi = scriptvi;
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this.script = script;
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this.seqnum = seqnum;
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} else if (txidbuf) {
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var obj = txidbuf;
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this.set(obj);
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}
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};
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Txin.prototype.set = function(obj) {
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this.txidbuf = obj.txidbuf || this.txidbuf;
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this.txoutnum = typeof obj.txoutnum !== 'undefined' ? obj.txoutnum : this.txoutnum;
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this.scriptvi = typeof obj.scriptvi !== 'undefined' ? obj.scriptvi : this.scriptvi;
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this.script = obj.script || this.script;
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this.seqnum = typeof obj.seqnum !== 'undefined' ? obj.seqnum : this.seqnum;
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return this;
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};
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Txin.prototype.fromJSON = function(json) {
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this.set({
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txidbuf: new Buffer(json.txidbuf, 'hex'),
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txoutnum: json.txoutnum,
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scriptvi: Varint().fromJSON(json.scriptvi),
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script: Script().fromJSON(json.script),
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seqnum: json.seqnum
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});
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return this;
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};
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Txin.prototype.toJSON = function() {
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return {
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txidbuf: this.txidbuf.toString('hex'),
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txoutnum: this.txoutnum,
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scriptvi: this.scriptvi.toJSON(),
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script: this.script.toJSON(),
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seqnum: this.seqnum
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};
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};
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Txin.prototype.fromBuffer = function(buf) {
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return this.fromBufferReader(BufferReader(buf));
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};
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Txin.prototype.fromBufferReader = function(br) {
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this.txidbuf = br.read(32);
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this.txoutnum = br.readUInt32LE();
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this.scriptvi = Varint(br.readVarintBuf());
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this.script = Script().fromBuffer(br.read(this.scriptvi.toNumber()));
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this.seqnum = br.readUInt32LE();
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return this;
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};
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Txin.prototype.toBuffer = function() {
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return this.toBufferWriter().concat();
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};
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Txin.prototype.toBufferWriter = function(bw) {
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if (!bw)
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bw = new BufferWriter();
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bw.write(this.txidbuf);
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bw.writeUInt32LE(this.txoutnum);
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bw.write(this.scriptvi.buf);
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bw.write(this.script.toBuffer());
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bw.writeUInt32LE(this.seqnum);
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return bw;
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};
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module.exports = Txin;
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