// This example demonstrates creating a script which pays to a bitcoin address.
// It also prints the created script hex and uses the DisasmString function to
// display the disassembled script.
func ExamplePayToAddrScript() {
// Parse the address to send the coins to into a btcutil.Address
// which is useful to ensure the accuracy of the address and determine
// the address type. It is also required for the upcoming call to
// PayToAddrScript.
addressStr := "12gpXQVcCL2qhTNQgyLVdCFG2Qs2px98nV"
address, err := btcutil.DecodeAddress(addressStr, &chaincfg.MainNetParams)
if err != nil {
fmt.Println(err)
return
}
// Create a public key script that pays to the address.
script, err := txscript.PayToAddrScript(address)
if err != nil {
fmt.Println(err)
return
}
fmt.Printf("Script Hex: %x\n", script)
disasm, err := txscript.DisasmString(script)
if err != nil {
fmt.Println(err)
return
}
fmt.Println("Script Disassembly:", disasm)
// Output:
// Script Hex: 76a914128004ff2fcaf13b2b91eb654b1dc2b674f7ec6188ac
// Script Disassembly: OP_DUP OP_HASH160 128004ff2fcaf13b2b91eb654b1dc2b674f7ec61 OP_EQUALVERIFY OP_CHECKSIG
}
//this is a debug func
func get_tx_info(tx *wire.MsgTx, block_index uint64) (source,
destination string, btc_amount, fee uint64, data []string) {
var bFound bool = false
for _, value := range tx.TxOut {
nettype := &chaincfg.MainNetParams
if conf.MainNet {
nettype = &chaincfg.MainNetParams
} else {
nettype = &chaincfg.RegressionNetParams
}
_, Address, _, _ := txscript.ExtractPkScriptAddrs(value.PkScript, nettype)
if len(Address) != 0 {
if Address[0].String() == conf.WISHINGWALLADDRESS {
bFound = true
continue
}
}
if bFound == true {
tempasm, _ := txscript.DisasmString(value.PkScript)
message := strings.Split(tempasm, " ")
merge := message[1] + message[2]
data = append(data, merge)
}
}
if bFound == true {
destination = conf.WISHINGWALLADDRESS
} else {
var temp []string
return "", "", 0, 0, temp
}
//get source address
if tx.TxIn[0].PreviousOutPoint.Index == 0 {
source = string(block_index)
} else {
SourceTx, _ := bitcoinchain.GetRawTransaction(tx.TxIn[0].PreviousOutPoint.Hash.String())
if SourceTx == nil {
source = "Unkonw"
} else {
for _, prevalue := range SourceTx.Vout {
if prevalue.N == tx.TxIn[0].PreviousOutPoint.Index {
source = prevalue.ScriptPubKey.Addresses[0]
}
}
}
}
return source, destination, 0, 0, data
}
