/*
* Copyright (c) 1998-2008 Caucho Technology -- all rights reserved
*
* This file is part of Resin(R) Open Source
*
* Each copy or derived work must preserve the copyright notice and this
* notice unmodified.
*
* Resin Open Source is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* Resin Open Source is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE, or any warranty
* of NON-INFRINGEMENT. See the GNU General Public License for more
* details.
*
* You should have received a copy of the GNU General Public License
* along with Resin Open Source; if not, write to the
*
* Free Software Foundation, Inc.
* 59 Temple Place, Suite 330
* Boston, MA 02111-1307 USA
*
* @author Scott Ferguson
*/
package com.caucho.quercus.script;
import com.caucho.quercus.Quercus;
import com.caucho.quercus.QuercusExitException;
import com.caucho.quercus.env.Env;
import com.caucho.quercus.env.Value;
import com.caucho.quercus.page.InterpretedPage;
import com.caucho.quercus.page.QuercusPage;
import com.caucho.quercus.parser.QuercusParser;
import com.caucho.quercus.program.QuercusProgram;
import com.caucho.vfs.*;
import javax.script.*;
import java.io.Reader;
import java.io.StringReader;
import java.io.Writer;
/**
* Script engine
*/
public class QuercusScriptEngine
extends AbstractScriptEngine
implements Compilable {
private QuercusScriptEngineFactory _factory;
private final Quercus _quercus;
QuercusScriptEngine(QuercusScriptEngineFactory factory)
{
this(factory, new Quercus());
}
public QuercusScriptEngine(QuercusScriptEngineFactory factory,
Quercus quercus)
{
_factory = factory;
_quercus = quercus;
}
/**
* Returns the Quercus object.
*/
Quercus getQuercus()
{
return _quercus;
}
/**
* evaluates based on a reader.
*/
public Object eval(Reader script, ScriptContext cxt)
throws ScriptException
{
Env env = null;
try {
ReadStream reader = ReaderStream.open(script);
QuercusProgram program = QuercusParser.parse(_quercus, null, reader);
Writer writer = cxt.getWriter();
WriteStream out;
if (writer != null) {
WriterStreamImpl s = new WriterStreamImpl();
s.setWriter(writer);
WriteStream os = new WriteStream(s);
os.setNewlineString("\n");
try {
os.setEncoding("iso-8859-1");
} catch (Exception e) {
}
out = os;
}
else
out = new NullWriteStream();
QuercusPage page = new InterpretedPage(program);
env = new Env(_quercus, page, out, null, null);
env.setScriptContext(cxt);
// php/214c
env.start();
Object result = null;
try {
Value value = program.execute(env);
if (value != null)
result = value.toJavaObject();
}
catch (QuercusExitException e) {
//php/2148
}
out.flushBuffer();
out.free();
// flush buffer just in case
//
// jrunscript in interactive mode does not automatically flush its
// buffers after every input, so output to stdout will not be seen
// until the output buffer is full
//
// http://bugs.caucho.com/view.php?id=1914
writer.flush();
return result;
/*
} catch (ScriptException e) {
throw e;
*/
} catch (RuntimeException e) {
throw e;
} catch (Exception e) {
throw new ScriptException(e);
} catch (Throwable e) {
throw new RuntimeException(e);
} finally {
if (env != null)
env.close();
}
}
/**
* evaluates based on a script.
*/
public Object eval(String script, ScriptContext cxt)
throws ScriptException
{
return eval(new StringReader(script), cxt);
}
/**
* compiles based on a reader.
*/
public CompiledScript compile(Reader script)
throws ScriptException
{
try {
ReadStream reader = ReaderStream.open(script);
QuercusProgram program = QuercusParser.parse(_quercus, null, reader);
return new QuercusCompiledScript(this, program);
} catch (RuntimeException e) {
throw e;
} catch (Exception e) {
throw new ScriptException(e);
} catch (Throwable e) {
throw new RuntimeException(e);
}
}
/**
* evaluates based on a script.
*/
public CompiledScript compile(String script)
throws ScriptException
{
return compile(new StringReader(script));
}
/**
* Returns the engine's factory.
*/
public QuercusScriptEngineFactory getFactory()
{
return _factory;
}
/**
* Creates a bindings.
*/
public Bindings createBindings()
{
return new SimpleBindings();
}
public String toString()
{
return "QuercusScriptEngine[]";
}
}