private Script parseScriptString(String string) throws Exception {
String[] words = string.split("[ \\t\\n]");
UnsafeByteArrayOutputStream out = new UnsafeByteArrayOutputStream();
for (String w : words) {
if (w.equals("")) continue;
if (w.matches("^-?[0-9]*$")) {
// Number
long val = Long.parseLong(w);
if (val >= -1 && val <= 16) out.write(Script.encodeToOpN((int) val));
else
Script.writeBytes(
out, Utils.reverseBytes(Utils.encodeMPI(BigInteger.valueOf(val), false)));
} else if (w.matches("^0x[0-9a-fA-F]*$")) {
// Raw hex data, inserted NOT pushed onto stack:
out.write(Hex.decode(w.substring(2)));
} else if (w.length() >= 2 && w.startsWith("'") && w.endsWith("'")) {
// Single-quoted string, pushed as data. NOTE: this is poor-man's
// parsing, spaces/tabs/newlines in single-quoted strings won't work.
Script.writeBytes(out, w.substring(1, w.length() - 1).getBytes(Charset.forName("UTF-8")));
} else if (ScriptOpCodes.getOpCode(w) != OP_INVALIDOPCODE) {
// opcode, e.g. OP_ADD or OP_1:
out.write(ScriptOpCodes.getOpCode(w));
} else if (w.startsWith("OP_")
&& ScriptOpCodes.getOpCode(w.substring(3)) != OP_INVALIDOPCODE) {
// opcode, e.g. OP_ADD or OP_1:
out.write(ScriptOpCodes.getOpCode(w.substring(3)));
} else {
throw new RuntimeException("Invalid Data");
}
}
return new Script(out.toByteArray());
}
