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Implement global serialize() and deserialize() functions

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hns 2005-03-16 11:48:42 +00:00
parent 4527bda2b5
commit 628cadcf49
1 changed files with 47 additions and 1 deletions
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48
src/helma/scripting/rhino/GlobalObject.java
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@ -23,6 +23,7 @@ import helma.util.HtmlEncoder;
import helma.util.MimePart;
import helma.util.XmlUtils;
import org.mozilla.javascript.*;
import org.mozilla.javascript.serialize.*;
import java.util.*;
import java.net.HttpURLConnection;
@ -65,7 +66,8 @@ public class GlobalObject extends ImporterTopLevel implements PropertyRecorder {
"authenticate", "createSkin", "format", "encode",
"encodeXml", "encodeForm", "stripTags", "formatParagraphs",
"getXmlDocument", "getHtmlDocument", "seal",
"getDBConnection", "getURL", "write", "writeln"
"getDBConnection", "getURL", "write", "writeln",
"serialize", "deserialize"
};
defineFunctionProperties(globalFuncs, GlobalObject.class, 0);
@ -507,6 +509,50 @@ public class GlobalObject extends ImporterTopLevel implements PropertyRecorder {
return str;
}
public static void serialize(Context cx, Scriptable thisObj,
Object[] args, Function funObj)
throws IOException
{
if (args.length < 2) {
throw Context.reportRuntimeError(
"Expected an object to serialize and a filename to write " +
"the serialization to");
}
Object obj = args[0];
String filename = cx.toString(args[1]);
FileOutputStream fos = new FileOutputStream(filename);
Scriptable scope = ScriptableObject.getTopLevelScope(thisObj).getPrototype();
// use a ScriptableOutputStream that unwraps Wrappers
ScriptableOutputStream out = new ScriptableOutputStream(fos, scope) {
protected Object replaceObject(Object obj) throws IOException {
if (obj instanceof Wrapper)
obj = ((Wrapper) obj).unwrap();
return super.replaceObject(obj);
}
};
out.writeObject(obj);
out.close();
}
public static Object deserialize(Context cx, Scriptable thisObj,
Object[] args, Function funObj)
throws IOException, ClassNotFoundException
{
if (args.length < 1) {
throw Context.reportRuntimeError(
"Expected a filename to read the serialization from");
}
String filename = cx.toString(args[0]);
FileInputStream fis = new FileInputStream(filename);
Scriptable scope = ScriptableObject.getTopLevelScope(thisObj).getPrototype();
ObjectInputStream in = new ScriptableInputStream(fis, scope);
Object deserialized = in.readObject();
in.close();
return cx.toObject(deserialized, scope);
}
private static String toString(Object obj) {
if (obj == null || obj == Undefined.instance) {
// Note: we might return "" here in order