82 lines
2.4 KiB
Java
82 lines
2.4 KiB
Java
// Copyright 2011, 2012 Tony Garnock-Jones <tonygarnockjones@gmail.com>.
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//
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// This file is part of Hop.
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//
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// Hop is free software: you can redistribute it and/or modify it
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// under the terms of the GNU General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// Hop is distributed in the hope that it will be useful, but WITHOUT
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// ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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// or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public
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// License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with Hop. If not, see <http://www.gnu.org/licenses/>.
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//
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package hop;
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import java.io.ByteArrayOutputStream;
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import java.io.IOException;
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import java.io.OutputStream;
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import java.util.List;
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/**
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*/
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public class SexpWriter {
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public OutputStream _output;
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public SexpWriter(OutputStream output) {
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_output = output;
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}
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public static void writeSimpleString(OutputStream stream, byte[] buf) throws IOException {
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stream.write(Integer.toString(buf.length).getBytes());
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stream.write(':');
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stream.write(buf);
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}
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public void write(Object x) throws IOException {
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if (x instanceof String) {
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writeSimpleString(_output, ((String) x).getBytes());
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return;
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}
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if (x instanceof byte[]) {
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writeSimpleString(_output, ((byte[]) x));
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return;
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}
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if (x instanceof SexpBytes) {
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((SexpBytes) x).writeTo(_output);
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return;
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}
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if (x instanceof List) {
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_output.write('(');
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for (Object v : ((List<Object>) x)) {
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write(v);
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}
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_output.write(')');
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return;
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}
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if (x == null) {
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_output.write("0:".getBytes());
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return;
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}
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throw new SexpSyntaxError("Unsupported sexp object type");
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}
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public static void write(OutputStream output, Object x) throws IOException {
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new SexpWriter(output).write(x);
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}
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public static String writeString(Object x) {
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try {
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ByteArrayOutputStream o = new ByteArrayOutputStream();
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write(o, x);
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return new String(o.toByteArray());
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} catch (IOException ioe) {
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return x.toString();
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}
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}
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}
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