package/*: use bitcoin-ops, pushdata-bitcoin packages

package.json

@@ -53,12 +53,14 @@
   "dependencies": {
     "bigi": "^1.4.0",
     "bip66": "^1.1.0",
+    "bitcoin-ops": "^1.3.0",
     "bs58check": "^1.0.5",
     "buffer-reverse": "^1.0.0",
     "create-hash": "^1.1.0",
     "create-hmac": "^1.1.3",
     "ecurve": "^1.0.0",
     "merkle-lib": "^1.0.0",
+    "pushdata-bitcoin": "^1.0.1",
     "randombytes": "^2.0.1",
     "typeforce": "^1.8.7",
     "varuint-bitcoin": "^1.0.4",

src/bufferutils.js

@@ -1,50 +1,6 @@
-var opcodes = require('./opcodes.json')
+var pushdata = require('pushdata-bitcoin')
 var varuint = require('varuint-bitcoin')
 
-function pushDataSize (i) {
-  return i < opcodes.OP_PUSHDATA1 ? 1
-  : i <= 0xff ? 2
-  : i <= 0xffff ? 3
-  : 5
-}
-
-function readPushDataInt (buffer, offset) {
-  var opcode = buffer.readUInt8(offset)
-  var number, size
-
-  // ~6 bit
-  if (opcode < opcodes.OP_PUSHDATA1) {
-    number = opcode
-    size = 1
-
-  // 8 bit
-  } else if (opcode === opcodes.OP_PUSHDATA1) {
-    if (offset + 2 > buffer.length) return null
-    number = buffer.readUInt8(offset + 1)
-    size = 2
-
-  // 16 bit
-  } else if (opcode === opcodes.OP_PUSHDATA2) {
-    if (offset + 3 > buffer.length) return null
-    number = buffer.readUInt16LE(offset + 1)
-    size = 3
-
-  // 32 bit
-  } else {
-    if (offset + 5 > buffer.length) return null
-    if (opcode !== opcodes.OP_PUSHDATA4) throw new Error('Unexpected opcode')
-
-    number = buffer.readUInt32LE(offset + 1)
-    size = 5
-  }
-
-  return {
-    opcode: opcode,
-    number: number,
-    size: size
-  }
-}
-
 // https://github.com/feross/buffer/blob/master/index.js#L1127
 function verifuint (value, max) {
   if (typeof value !== 'number') throw new Error('cannot write a non-number as a number')
@@ -63,32 +19,6 @@ function readUInt64LE (buffer, offset) {
   return b + a
 }
 
-function writePushDataInt (buffer, number, offset) {
-  var size = pushDataSize(number)
-
-  // ~6 bit
-  if (size === 1) {
-    buffer.writeUInt8(number, offset)
-
-  // 8 bit
-  } else if (size === 2) {
-    buffer.writeUInt8(opcodes.OP_PUSHDATA1, offset)
-    buffer.writeUInt8(number, offset + 1)
-
-  // 16 bit
-  } else if (size === 3) {
-    buffer.writeUInt8(opcodes.OP_PUSHDATA2, offset)
-    buffer.writeUInt16LE(number, offset + 1)
-
-  // 32 bit
-  } else {
-    buffer.writeUInt8(opcodes.OP_PUSHDATA4, offset)
-    buffer.writeUInt32LE(number, offset + 1)
-  }
-
-  return size
-}
-
 function writeUInt64LE (buffer, value, offset) {
   verifuint(value, 0x001fffffffffffff)
 
@@ -114,13 +44,13 @@ function writeVarInt (buffer, number, offset) {
 }
 
 module.exports = {
-  pushDataSize: pushDataSize,
+  pushDataSize: pushdata.encodingLength,
-  readPushDataInt: readPushDataInt,
+  readPushDataInt: pushdata.decode,
   readUInt64LE: readUInt64LE,
   readVarInt: readVarInt,
   varIntBuffer: varuint.encode,
   varIntSize: varuint.encodingLength,
-  writePushDataInt: writePushDataInt,
+  writePushDataInt: pushdata.encode,
   writeUInt64LE: writeUInt64LE,
   writeVarInt: writeVarInt
 }

src/index.js

@@ -10,6 +10,6 @@ module.exports = {
   bufferutils: require('./bufferutils'),
   crypto: require('./crypto'),
   networks: require('./networks'),
-  opcodes: require('./opcodes.json'),
+  opcodes: require('bitcoin-ops'),
   script: require('./script')
 }

src/opcodes.json

@@ -1,130 +0,0 @@
-{
-  "OP_FALSE": 0,
-  "OP_0": 0,
-  "OP_PUSHDATA1": 76,
-  "OP_PUSHDATA2": 77,
-  "OP_PUSHDATA4": 78,
-  "OP_1NEGATE": 79,
-  "OP_RESERVED": 80,
-  "OP_1": 81,
-  "OP_TRUE": 81,
-  "OP_2": 82,
-  "OP_3": 83,
-  "OP_4": 84,
-  "OP_5": 85,
-  "OP_6": 86,
-  "OP_7": 87,
-  "OP_8": 88,
-  "OP_9": 89,
-  "OP_10": 90,
-  "OP_11": 91,
-  "OP_12": 92,
-  "OP_13": 93,
-  "OP_14": 94,
-  "OP_15": 95,
-  "OP_16": 96,
-
-  "OP_NOP": 97,
-  "OP_VER": 98,
-  "OP_IF": 99,
-  "OP_NOTIF": 100,
-  "OP_VERIF": 101,
-  "OP_VERNOTIF": 102,
-  "OP_ELSE": 103,
-  "OP_ENDIF": 104,
-  "OP_VERIFY": 105,
-  "OP_RETURN": 106,
-
-  "OP_TOALTSTACK": 107,
-  "OP_FROMALTSTACK": 108,
-  "OP_2DROP": 109,
-  "OP_2DUP": 110,
-  "OP_3DUP": 111,
-  "OP_2OVER": 112,
-  "OP_2ROT": 113,
-  "OP_2SWAP": 114,
-  "OP_IFDUP": 115,
-  "OP_DEPTH": 116,
-  "OP_DROP": 117,
-  "OP_DUP": 118,
-  "OP_NIP": 119,
-  "OP_OVER": 120,
-  "OP_PICK": 121,
-  "OP_ROLL": 122,
-  "OP_ROT": 123,
-  "OP_SWAP": 124,
-  "OP_TUCK": 125,
-
-  "OP_CAT": 126,
-  "OP_SUBSTR": 127,
-  "OP_LEFT": 128,
-  "OP_RIGHT": 129,
-  "OP_SIZE": 130,
-
-  "OP_INVERT": 131,
-  "OP_AND": 132,
-  "OP_OR": 133,
-  "OP_XOR": 134,
-  "OP_EQUAL": 135,
-  "OP_EQUALVERIFY": 136,
-  "OP_RESERVED1": 137,
-  "OP_RESERVED2": 138,
-
-  "OP_1ADD": 139,
-  "OP_1SUB": 140,
-  "OP_2MUL": 141,
-  "OP_2DIV": 142,
-  "OP_NEGATE": 143,
-  "OP_ABS": 144,
-  "OP_NOT": 145,
-  "OP_0NOTEQUAL": 146,
-  "OP_ADD": 147,
-  "OP_SUB": 148,
-  "OP_MUL": 149,
-  "OP_DIV": 150,
-  "OP_MOD": 151,
-  "OP_LSHIFT": 152,
-  "OP_RSHIFT": 153,
-
-  "OP_BOOLAND": 154,
-  "OP_BOOLOR": 155,
-  "OP_NUMEQUAL": 156,
-  "OP_NUMEQUALVERIFY": 157,
-  "OP_NUMNOTEQUAL": 158,
-  "OP_LESSTHAN": 159,
-  "OP_GREATERTHAN": 160,
-  "OP_LESSTHANOREQUAL": 161,
-  "OP_GREATERTHANOREQUAL": 162,
-  "OP_MIN": 163,
-  "OP_MAX": 164,
-
-  "OP_WITHIN": 165,
-
-  "OP_RIPEMD160": 166,
-  "OP_SHA1": 167,
-  "OP_SHA256": 168,
-  "OP_HASH160": 169,
-  "OP_HASH256": 170,
-  "OP_CODESEPARATOR": 171,
-  "OP_CHECKSIG": 172,
-  "OP_CHECKSIGVERIFY": 173,
-  "OP_CHECKMULTISIG": 174,
-  "OP_CHECKMULTISIGVERIFY": 175,
-
-  "OP_NOP1": 176,
-  "OP_NOP2": 177,
-  "OP_CHECKLOCKTIMEVERIFY": 177,
-
-  "OP_NOP3": 178,
-  "OP_NOP4": 179,
-  "OP_NOP5": 180,
-  "OP_NOP6": 181,
-  "OP_NOP7": 182,
-  "OP_NOP8": 183,
-  "OP_NOP9": 184,
-  "OP_NOP10": 185,
-
-  "OP_PUBKEYHASH": 253,
-  "OP_PUBKEY": 254,
-  "OP_INVALIDOPCODE": 255
-}

src/script.js

@@ -1,17 +1,11 @@
 var bip66 = require('bip66')
-var bufferutils = require('./bufferutils')
+var pushdata = require('pushdata-bitcoin')
 var typeforce = require('typeforce')
 var types = require('./types')
 var scriptNumber = require('./script_number')
-var OPS = require('./opcodes.json')
+
-var REVERSE_OPS = (function () {
+var OPS = require('bitcoin-ops')
-  var result = {}
+var REVERSE_OPS = require('bitcoin-ops/map')
-  for (var op in OPS) {
-    var code = OPS[op]
-    result[code] = op
-  }
-  return result
-})()
 var OP_INT_BASE = OPS.OP_RESERVED // OP_1 - 1
 
 function isOPInt (value) {
@@ -43,7 +37,7 @@ function compile (chunks) {
         return accum + 1
       }
 
-      return accum + bufferutils.pushDataSize(chunk.length) + chunk.length
+      return accum + pushdata.encodingLength(chunk.length) + chunk.length
     }
 
     // opcode
@@ -70,7 +64,7 @@ function compile (chunks) {
         return
       }
 
-      offset += bufferutils.writePushDataInt(buffer, chunk.length, offset)
+      offset += pushdata.encode(buffer, chunk.length, offset)
 
       chunk.copy(buffer, offset)
       offset += chunk.length
@@ -100,7 +94,7 @@ function decompile (buffer) {
 
     // data chunk
     if ((opcode > OPS.OP_0) && (opcode <= OPS.OP_PUSHDATA4)) {
-      var d = bufferutils.readPushDataInt(buffer, i)
+      var d = pushdata.decode(buffer, i)
 
       // did reading a pushDataInt fail? empty script
       if (d === null) return []

src/templates/multisig/input.js

@@ -2,7 +2,7 @@
 
 var bscript = require('../../script')
 var typeforce = require('typeforce')
-var OPS = require('../../opcodes.json')
+var OPS = require('bitcoin-ops')
 
 function partialSignature (value) {
   return value === OPS.OP_0 || bscript.isCanonicalSignature(value)

src/templates/multisig/output.js

@@ -3,7 +3,7 @@
 var bscript = require('../../script')
 var types = require('../../types')
 var typeforce = require('typeforce')
-var OPS = require('../../opcodes.json')
+var OPS = require('bitcoin-ops')
 var OP_INT_BASE = OPS.OP_RESERVED // OP_1 - 1
 
 function check (script, allowIncomplete) {

src/templates/nulldata.js

@@ -3,7 +3,7 @@
 var bscript = require('../script')
 var types = require('../types')
 var typeforce = require('typeforce')
-var OPS = require('../opcodes.json')
+var OPS = require('bitcoin-ops')
 
 function check (script) {
   var buffer = bscript.compile(script)

src/templates/pubkey/output.js

@@ -2,7 +2,7 @@
 
 var bscript = require('../../script')
 var typeforce = require('typeforce')
-var OPS = require('../../opcodes.json')
+var OPS = require('bitcoin-ops')
 
 function check (script) {
   var chunks = bscript.decompile(script)

src/templates/pubkeyhash/output.js

@@ -3,7 +3,7 @@
 var bscript = require('../../script')
 var types = require('../../types')
 var typeforce = require('typeforce')
-var OPS = require('../../opcodes.json')
+var OPS = require('bitcoin-ops')
 
 function check (script) {
   var buffer = bscript.compile(script)

src/templates/scripthash/output.js

@@ -3,7 +3,7 @@
 var bscript = require('../../script')
 var types = require('../../types')
 var typeforce = require('typeforce')
-var OPS = require('../../opcodes.json')
+var OPS = require('bitcoin-ops')
 
 function check (script) {
   var buffer = bscript.compile(script)

src/templates/witnesspubkeyhash/output.js

@@ -3,7 +3,7 @@
 var bscript = require('../../script')
 var types = require('../../types')
 var typeforce = require('typeforce')
-var OPS = require('../../opcodes.json')
+var OPS = require('bitcoin-ops')
 
 function check (script) {
   var buffer = bscript.compile(script)

src/templates/witnessscripthash/output.js

@@ -3,7 +3,7 @@
 var bscript = require('../../script')
 var types = require('../../types')
 var typeforce = require('typeforce')
-var OPS = require('../../opcodes.json')
+var OPS = require('bitcoin-ops')
 
 function check (script) {
   var buffer = bscript.compile(script)

src/transaction.js

@@ -2,7 +2,7 @@ var bcrypto = require('./crypto')
 var bscript = require('./script')
 var bufferutils = require('./bufferutils')
 var bufferReverse = require('buffer-reverse')
-var opcodes = require('./opcodes.json')
+var opcodes = require('bitcoin-ops')
 var typeforce = require('typeforce')
 var types = require('./types')
 

src/transaction_builder.js

@@ -3,7 +3,7 @@ var bcrypto = require('./crypto')
 var bscript = require('./script')
 var bufferReverse = require('buffer-reverse')
 var networks = require('./networks')
-var ops = require('./opcodes.json')
+var ops = require('bitcoin-ops')
 var typeforce = require('typeforce')
 var types = require('./types')
 var scriptTypes = bscript.types

test/templates.js

@@ -3,7 +3,7 @@
 var assert = require('assert')
 var bcrypto = require('../src/crypto')
 var bscript = require('../src/script')
-var ops = require('../src/opcodes')
+var ops = require('bitcoin-ops')
 
 var fixtures = require('./fixtures/templates.json')
 

test/transaction_builder.js

@@ -3,7 +3,7 @@
 var assert = require('assert')
 var baddress = require('../src/address')
 var bscript = require('../src/script')
-var ops = require('../src/opcodes')
+var ops = require('bitcoin-ops')
 
 var BigInteger = require('bigi')
 var ECPair = require('../src/ecpair')