ScriptWrapper.java

package co.gem.round.coinop;

import co.gem.round.encoding.Hex;
import org.bitcoinj.script.Script;
import org.bitcoinj.script.ScriptBuilder;
import org.bitcoinj.script.ScriptOpCodes;

import java.util.StringTokenizer;

/**
 * Created by julian on 11/24/14.
 */
public class ScriptWrapper {
    public static Script parseScript(String script) {
        StringTokenizer tokenizer = new StringTokenizer(script);
        ScriptBuilder builder = new ScriptBuilder();
        while (tokenizer.hasMoreTokens()) {
            String token = tokenizer.nextToken();
            token = token.replace("OP_", "");
            Integer opCode = ScriptOpCodes.getOpCode(token);
            if (opCode != ScriptOpCodes.OP_INVALIDOPCODE) {
                builder.op(opCode);
                continue;
            }
            Integer smallNum = null;
            try {
                smallNum = Integer.parseInt(token);
                if (smallNum <= 16) {
                    builder.smallNum(smallNum);
                    continue;
                }
            } catch (NumberFormatException e) {

            }

            builder.data(Hex.decode(token));
        }
        return builder.build();
    }
}