ScriptBuilder (bitcoinj 0.13-SNAPSHOT API)

java.lang.Object
- org.bitcoinj.script.ScriptBuilder

```
public class ScriptBuilder
extends Object
```
Tools for the construction of commonly used script types. You don't normally need this as it's hidden behind convenience methods on Transaction, but they are useful when working with the protocol at a lower level.

Constructor Summary

Constructors
Constructor and Description
`ScriptBuilder()` Creates a fresh ScriptBuilder with an empty program.
`ScriptBuilder(Script template)` Creates a fresh ScriptBuilder with the given program as the starting point.

Method Summary

All Methods Static Methods Instance Methods Concrete Methods
Modifier and Type	Method and Description
`ScriptBuilder`	`addChunk(int index, ScriptChunk chunk)` Adds the given chunk at the given index in the program
`ScriptBuilder`	`addChunk(ScriptChunk chunk)` Adds the given chunk to the end of the program
`Script`	`build()` Creates a new immutable Script based on the state of the builder.
`static Script`	`createInputScript(TransactionSignature signature)` Creates a scriptSig that can redeem a pay-to-pubkey output.
`static Script`	`createInputScript(TransactionSignature signature, ECKey pubKey)` Creates a scriptSig that can redeem a pay-to-address output.
`static Script`	`createMultiSigInputScript(List<TransactionSignature> signatures)` Create a program that satisfies an OP_CHECKMULTISIG program.
`static Script`	`createMultiSigInputScript(TransactionSignature... signatures)` Create a program that satisfies an OP_CHECKMULTISIG program.
`static Script`	`createMultiSigInputScriptBytes(List<byte[]> signatures)` Create a program that satisfies an OP_CHECKMULTISIG program, using pre-encoded signatures.
`static Script`	`createMultiSigInputScriptBytes(List<byte[]> signatures, byte[] multisigProgramBytes)` Create a program that satisfies an OP_CHECKMULTISIG program, using pre-encoded signatures.
`static Script`	`createMultiSigOutputScript(int threshold, List<ECKey> pubkeys)` Creates a program that requires at least N of the given keys to sign, using OP_CHECKMULTISIG.
`static Script`	`createOpReturnScript(byte[] data)` Creates a script of the form OP_RETURN [data].
`static Script`	`createOutputScript(Address to)` Creates a scriptPubKey that encodes payment to the given address.
`static Script`	`createOutputScript(ECKey key)` Creates a scriptPubKey that encodes payment to the given raw public key.
`static Script`	`createP2SHMultiSigInputScript(List<TransactionSignature> signatures, Script multisigProgram)` Create a program that satisfies a pay-to-script hashed OP_CHECKMULTISIG program.
`static Script`	`createP2SHOutputScript(byte[] hash)` Creates a scriptPubKey that sends to the given script hash.
`static Script`	`createP2SHOutputScript(int threshold, List<ECKey> pubkeys)` Creates a P2SH output script with given public keys and threshold.
`static Script`	`createP2SHOutputScript(Script redeemScript)` Creates a scriptPubKey for the given redeem script.
`static Script`	`createRedeemScript(int threshold, List<ECKey> pubkeys)` Creates redeem script with given public keys and threshold.
`ScriptBuilder`	`data(byte[] data)` Adds a copy of the given byte array as a data element (i.e.
`ScriptBuilder`	`data(int index, byte[] data)` Adds a copy of the given byte array as a data element (i.e.
`ScriptBuilder`	`op(int opcode)` Adds the given opcode to the end of the program.
`ScriptBuilder`	`op(int index, int opcode)` Adds the given opcode to the given index in the program
`ScriptBuilder`	`smallNum(int num)` Adds the given number as a OP_N opcode to the end of the program.
`ScriptBuilder`	`smallNum(int index, int num)` Adds the given number as a OP_N opcode to the given index in the program.
`static Script`	`updateScriptWithSignature(Script scriptSig, byte[] signature, int targetIndex, int sigsPrefixCount, int sigsSuffixCount)` Returns a copy of the given scriptSig with the signature inserted in the given position.

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Constructor Detail
  - ScriptBuilder
```
public ScriptBuilder()
```
    Creates a fresh ScriptBuilder with an empty program.
  - ScriptBuilder
```
public ScriptBuilder(Script template)
```
    Creates a fresh ScriptBuilder with the given program as the starting point.
- Method Detail
  - addChunk
```
public ScriptBuilder addChunk(ScriptChunk chunk)
```
    Adds the given chunk to the end of the program
  - addChunk
```
public ScriptBuilder addChunk(int index,
                              ScriptChunk chunk)
```
    Adds the given chunk at the given index in the program
  - op
```
public ScriptBuilder op(int opcode)
```
    Adds the given opcode to the end of the program.
  - op
```
public ScriptBuilder op(int index,
                        int opcode)
```
    Adds the given opcode to the given index in the program
  - data
```
public ScriptBuilder data(byte[] data)
```
    Adds a copy of the given byte array as a data element (i.e. PUSHDATA) at the end of the program.
  - data
```
public ScriptBuilder data(int index,
                          byte[] data)
```
    Adds a copy of the given byte array as a data element (i.e. PUSHDATA) at the given index in the program.
  - smallNum
```
public ScriptBuilder smallNum(int num)
```
    Adds the given number as a OP_N opcode to the end of the program.
  - smallNum
```
public ScriptBuilder smallNum(int index,
                              int num)
```
    Adds the given number as a OP_N opcode to the given index in the program.
  - build
```
public Script build()
```
    Creates a new immutable Script based on the state of the builder.
  - createOutputScript
```
public static Script createOutputScript(Address to)
```
    Creates a scriptPubKey that encodes payment to the given address.
  - createOutputScript
```
public static Script createOutputScript(ECKey key)
```
    Creates a scriptPubKey that encodes payment to the given raw public key.
  - createInputScript
```
public static Script createInputScript(@Nullable
                                       TransactionSignature signature,
                                       ECKey pubKey)
```
    Creates a scriptSig that can redeem a pay-to-address output. If given signature is null, incomplete scriptSig will be created with OP_0 instead of signature
  - createInputScript
```
public static Script createInputScript(@Nullable
                                       TransactionSignature signature)
```
    Creates a scriptSig that can redeem a pay-to-pubkey output. If given signature is null, incomplete scriptSig will be created with OP_0 instead of signature
  - createMultiSigOutputScript
```
public static Script createMultiSigOutputScript(int threshold,
                                                List<ECKey> pubkeys)
```
    Creates a program that requires at least N of the given keys to sign, using OP_CHECKMULTISIG.
  - createMultiSigInputScript
```
public static Script createMultiSigInputScript(List<TransactionSignature> signatures)
```
    Create a program that satisfies an OP_CHECKMULTISIG program.
  - createMultiSigInputScript
```
public static Script createMultiSigInputScript(TransactionSignature... signatures)
```
    Create a program that satisfies an OP_CHECKMULTISIG program.
  - createMultiSigInputScriptBytes
```
public static Script createMultiSigInputScriptBytes(List<byte[]> signatures)
```
    Create a program that satisfies an OP_CHECKMULTISIG program, using pre-encoded signatures.
  - createP2SHMultiSigInputScript
```
public static Script createP2SHMultiSigInputScript(@Nullable
                                                   List<TransactionSignature> signatures,
                                                   Script multisigProgram)
```
    Create a program that satisfies a pay-to-script hashed OP_CHECKMULTISIG program. If given signature list is null, incomplete scriptSig will be created with OP_0 instead of signatures
  - createMultiSigInputScriptBytes
```
public static Script createMultiSigInputScriptBytes(List<byte[]> signatures,
                                                    @Nullable
                                                    byte[] multisigProgramBytes)
```
    Create a program that satisfies an OP_CHECKMULTISIG program, using pre-encoded signatures. Optionally, appends the script program bytes if spending a P2SH output.
  - updateScriptWithSignature
```
public static Script updateScriptWithSignature(Script scriptSig,
                                               byte[] signature,
                                               int targetIndex,
                                               int sigsPrefixCount,
                                               int sigsSuffixCount)
```
    Returns a copy of the given scriptSig with the signature inserted in the given position. This function assumes that any missing sigs have OP_0 placeholders. If given scriptSig already has all the signatures in place, IllegalArgumentException will be thrown.
    
    Parameters:
    
    targetIndex - where to insert the signature
    
    sigsPrefixCount - how many items to copy verbatim (e.g. initial OP_0 for multisig)
    
    sigsSuffixCount - how many items to copy verbatim at end (e.g. redeemScript for P2SH)
  - createP2SHOutputScript
```
public static Script createP2SHOutputScript(byte[] hash)
```
    Creates a scriptPubKey that sends to the given script hash. Read BIP 16 to learn more about this kind of script.
  - createP2SHOutputScript
```
public static Script createP2SHOutputScript(Script redeemScript)
```
    Creates a scriptPubKey for the given redeem script.
  - createP2SHOutputScript
```
public static Script createP2SHOutputScript(int threshold,
                                            List<ECKey> pubkeys)
```
    Creates a P2SH output script with given public keys and threshold. Given public keys will be placed in redeem script in the lexicographical sorting order.
  - createRedeemScript
```
public static Script createRedeemScript(int threshold,
                                        List<ECKey> pubkeys)
```
    Creates redeem script with given public keys and threshold. Given public keys will be placed in redeem script in the lexicographical sorting order.
  - createOpReturnScript
```
public static Script createOpReturnScript(byte[] data)
```
    Creates a script of the form OP_RETURN [data]. This feature allows you to attach a small piece of data (like a hash of something stored elsewhere) to a zero valued output which can never be spent and thus does not pollute the ledger.

Class ScriptBuilder

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Constructor Detail

ScriptBuilder

ScriptBuilder

Method Detail

addChunk

addChunk

op

op

data

data

smallNum

smallNum

build

createOutputScript

createOutputScript

createInputScript

createInputScript

createMultiSigOutputScript

createMultiSigInputScript

createMultiSigInputScript

createMultiSigInputScriptBytes

createP2SHMultiSigInputScript

createMultiSigInputScriptBytes

updateScriptWithSignature

createP2SHOutputScript

createP2SHOutputScript

createP2SHOutputScript

createRedeemScript

createOpReturnScript