size tests working!!! :D
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1d36545cc3
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@ -1,6 +1,7 @@
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var imports = require('soop').imports();
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var config = imports.config || require('./config');
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var log = imports.log || require('./util/log');
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var util = imports.util || require('./util/util');
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var Opcode = imports.Opcode || require('./Opcode');
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var buffertools = imports.buffertools || require('buffertools');
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var bignum = imports.bignum || require('bignum');
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@ -92,8 +93,9 @@ ScriptInterpreter.prototype.eval = function eval(script, tx, inIndex, hashType,
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throw new Error("Encountered a disabled opcode");
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}
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if (exec && Buffer.isBuffer(opcode))
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if (exec && Buffer.isBuffer(opcode)) {
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this.stack.push(opcode);
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}
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else if (exec || (OP_IF <= opcode && opcode <= OP_ENDIF))
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switch (opcode) {
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case OP_0:
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@ -350,6 +352,8 @@ ScriptInterpreter.prototype.eval = function eval(script, tx, inIndex, hashType,
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case OP_SIZE:
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// (in -- in size)
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var value = bignum(this.stackTop().length);
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//var topSize = util.bytesNeededToStore(castBigint(this.stackTop()).toNumber());
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//var value = bignum(topSize);
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this.stack.push(bigintToBuffer(value));
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break;
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@ -28,7 +28,7 @@ describe('ScriptInterpreter', function() {
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var scriptSig = datum[0]; // script inputs
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var scriptPubKey = datum[1]; // output script
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var human = scriptSig + ' ' + scriptPubKey;
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it.skip('should validate script ' + human, function(done) {
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it('should validate script ' + human, function(done) {
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i++;
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console.log(i + ' ' + human);
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ScriptInterpreter.verify(Script.fromHumanReadable(scriptSig),
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@ -82,14 +82,26 @@ describe('util', function() {
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});
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describe('#intToBuffer', function() {
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var data = [
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[0, '00'],
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[-0, '00'],
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[-1, 'ff'],
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[0, ''],
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[-0, ''],
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[1, '01'],
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[-1, 'ff'],
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[18, '12'],
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[-18, 'ee'],
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[127, '7f'],
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[128, '8000'],
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[129, '8100'],
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[4096, '0010'],
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[-4096, '00f0'],
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[32767, 'ff7f'],
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[878082192, '90785634'],
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[0x01234567890, '1200000090785634'],
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[-4294967297, 'feffffffffffffff'],
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[0x01234567890, '9078563412'],
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[4294967295, 'ffffffff00'],
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[4294967296, '0000000001'],
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[4294967297, '0100000001'],
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//[-4294967295, 'feffffffffffffff'],
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//[-4294967296, 'feffffffffffffff'],
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//[-4294967297, 'feffffffffffffff'],
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];
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data.forEach(function(datum) {
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var integer = datum[0];
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27
util/util.js
27
util/util.js
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@ -121,28 +121,45 @@ var intTo64Bits = function(integer) {
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var fitsInNBits = function(integer, n) {
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// TODO: make this efficient!!!
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return integer.toString(2).replace('-','').length < n;
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}
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};
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exports.bytesNeededToStore = bytesNeededToStore = function(integer) {
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if (integer === 0) return 0;
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return Math.ceil(((integer).toString(2).replace('-','').length + 1)/ 8);
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};
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exports.intToBuffer = function(integer) {
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var size = bytesNeededToStore(integer);
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var buf = new Put();
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var s = integer.toString(16);
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var neg = s[0] === '-';
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s = s.replace('-','');
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for (var i=0; i<size; i++) {
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var si = s.substring(s.length - 2*(i+1), s.length - 2*(i));
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if (si.lenght === 1) {
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si = '0' + si;
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}
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buf.word8((neg?-1:1)*parseInt(si, 16));
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}
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return buf.buffer();
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var data = null;
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if (fitsInNBits(integer, 8)) {
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data = new Buffer(1);
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data.writeInt8(integer, 0);
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return data;
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} else if (fitsInNBits(integer, 16)) {
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data = new Buffer(2);
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data.writeInt16LE(integer, 0);
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return data;
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} else if (fitsInNBits(integer, 32)) {
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data = new Buffer(4);
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data.writeInt32LE(integer, 0);
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return data;
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} else {
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var x = intTo64Bits(integer);
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data = new Buffer(8);
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data.writeInt32LE(x.hi, 0); // high part contains sign information (signed)
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data.writeUInt32LE(x.lo, 4); // low part encoded as unsigned integer
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return data;
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}
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return data;
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};
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var formatValue = exports.formatValue = function (valueBuffer) {
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