69 lines
1.8 KiB
Java
69 lines
1.8 KiB
Java
|
/*
|
||
|
* Copyright (c) 2011 Tony Garnock-Jones. All rights reserved.
|
||
|
*/
|
||
|
|
||
|
package hop;
|
||
|
|
||
|
import java.io.ByteArrayOutputStream;
|
||
|
import java.io.IOException;
|
||
|
import java.io.OutputStream;
|
||
|
import java.util.List;
|
||
|
|
||
|
/**
|
||
|
*/
|
||
|
public class SexpWriter {
|
||
|
public OutputStream _output;
|
||
|
|
||
|
public SexpWriter(OutputStream output) {
|
||
|
_output = output;
|
||
|
}
|
||
|
|
||
|
public static void writeSimpleString(OutputStream stream, byte[] buf) throws IOException {
|
||
|
stream.write(Integer.toString(buf.length).getBytes());
|
||
|
stream.write(':');
|
||
|
stream.write(buf);
|
||
|
}
|
||
|
|
||
|
public void write(Object x) throws IOException {
|
||
|
if (x instanceof String) {
|
||
|
writeSimpleString(_output, ((String) x).getBytes());
|
||
|
return;
|
||
|
}
|
||
|
if (x instanceof byte[]) {
|
||
|
writeSimpleString(_output, ((byte[]) x));
|
||
|
return;
|
||
|
}
|
||
|
if (x instanceof SexpBytes) {
|
||
|
((SexpBytes) x).writeTo(_output);
|
||
|
return;
|
||
|
}
|
||
|
if (x instanceof List) {
|
||
|
_output.write('(');
|
||
|
for (Object v : ((List<Object>) x)) {
|
||
|
write(v);
|
||
|
}
|
||
|
_output.write(')');
|
||
|
return;
|
||
|
}
|
||
|
if (x == null) {
|
||
|
_output.write("0:".getBytes());
|
||
|
return;
|
||
|
}
|
||
|
throw new SexpSyntaxError("Unsupported sexp object type");
|
||
|
}
|
||
|
|
||
|
public static void write(OutputStream output, Object x) throws IOException {
|
||
|
new SexpWriter(output).write(x);
|
||
|
}
|
||
|
|
||
|
public static String writeString(Object x) {
|
||
|
try {
|
||
|
ByteArrayOutputStream o = new ByteArrayOutputStream();
|
||
|
write(o, x);
|
||
|
return new String(o.toByteArray());
|
||
|
} catch (IOException ioe) {
|
||
|
return x.toString();
|
||
|
}
|
||
|
}
|
||
|
}
|