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js/rhino/org/mozilla/javascript/tools/shell/Environment.java
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119
js/rhino/org/mozilla/javascript/tools/shell/Environment.java
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/* -*- Mode: java; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
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*
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* The contents of this file are subject to the Netscape Public License
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* Version 1.0 (the "NPL"); you may not use this file except in
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* compliance with the NPL. You may obtain a copy of the NPL at
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* http://www.mozilla.org/NPL/
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*
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* Software distributed under the NPL is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL
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* for the specific language governing rights and limitations under the
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* NPL.
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*
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* The Initial Developer of this code under the NPL is Netscape
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* Communications Corporation. Portions created by Netscape are
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* Copyright (C) 1997-1999 Netscape Communications Corporation. All Rights
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* Reserved.
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*/
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/*
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Environment.java
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Wraps java.lang.System properties.
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by Patrick C. Beard <beard@netscape.com>
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*/
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package org.mozilla.javascript.tools.shell;
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import org.mozilla.javascript.Scriptable;
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import org.mozilla.javascript.ScriptRuntime;
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import org.mozilla.javascript.ScriptableObject;
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import java.util.Vector;
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import java.util.Enumeration;
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import java.util.Properties;
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/**
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* Environment, intended to be instantiated at global scope, provides
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* a natural way to access System properties from JavaScript.
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*
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* @author Patrick C. Beard
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*/
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public class Environment extends ScriptableObject {
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private Environment thePrototypeInstance = null;
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public static void defineClass(ScriptableObject scope) {
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try {
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ScriptableObject.defineClass(scope, Environment.class);
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} catch (Exception e) {
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throw new Error(e.getMessage());
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}
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}
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public String getClassName() {
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return "Environment";
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}
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public Environment() {
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if (thePrototypeInstance == null)
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thePrototypeInstance = this;
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}
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public Environment(ScriptableObject scope) {
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setParentScope(scope);
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Object ctor = ScriptRuntime.getTopLevelProp(scope, "Environment");
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if (ctor != null && ctor instanceof Scriptable) {
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Scriptable s = (Scriptable) ctor;
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setPrototype((Scriptable) s.get("prototype", s));
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}
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}
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public boolean has(String name, Scriptable start) {
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if (this == thePrototypeInstance)
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return super.has(name, start);
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return (System.getProperty(name) != null);
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}
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public Object get(String name, Scriptable start) {
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if (this == thePrototypeInstance)
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return super.get(name, start);
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String result = System.getProperty(name);
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if (result != null)
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return ScriptRuntime.toObject(getParentScope(), result);
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else
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return Scriptable.NOT_FOUND;
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}
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public void put(String name, Scriptable start, Object value) {
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if (this == thePrototypeInstance)
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super.put(name, start, value);
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else
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System.getProperties().put(name, ScriptRuntime.toString(value));
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}
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private Object[] collectIds() {
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Properties props = System.getProperties();
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Enumeration names = props.propertyNames();
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Vector keys = new Vector();
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while (names.hasMoreElements())
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keys.addElement(names.nextElement());
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Object[] ids = new Object[keys.size()];
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keys.copyInto(ids);
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return ids;
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}
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public Object[] getIds() {
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if (this == thePrototypeInstance)
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return super.getIds();
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return collectIds();
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}
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public Object[] getAllIds() {
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if (this == thePrototypeInstance)
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return super.getAllIds();
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return collectIds();
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}
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}
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@ -0,0 +1,119 @@
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/* -*- Mode: java; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
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*
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* The contents of this file are subject to the Netscape Public License
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* Version 1.0 (the "NPL"); you may not use this file except in
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* compliance with the NPL. You may obtain a copy of the NPL at
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* http://www.mozilla.org/NPL/
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*
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* Software distributed under the NPL is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL
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* for the specific language governing rights and limitations under the
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* NPL.
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*
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* The Initial Developer of this code under the NPL is Netscape
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* Communications Corporation. Portions created by Netscape are
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* Copyright (C) 1997-1999 Netscape Communications Corporation. All Rights
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* Reserved.
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*/
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/*
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Environment.java
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Wraps java.lang.System properties.
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by Patrick C. Beard <beard@netscape.com>
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*/
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package org.mozilla.javascript.tools.shell;
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import org.mozilla.javascript.Scriptable;
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import org.mozilla.javascript.ScriptRuntime;
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import org.mozilla.javascript.ScriptableObject;
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import java.util.Vector;
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import java.util.Enumeration;
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import java.util.Properties;
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/**
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* Environment, intended to be instantiated at global scope, provides
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* a natural way to access System properties from JavaScript.
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*
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* @author Patrick C. Beard
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*/
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public class Environment extends ScriptableObject {
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private Environment thePrototypeInstance = null;
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public static void defineClass(ScriptableObject scope) {
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try {
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ScriptableObject.defineClass(scope, Environment.class);
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} catch (Exception e) {
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throw new Error(e.getMessage());
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}
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}
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public String getClassName() {
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return "Environment";
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}
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public Environment() {
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if (thePrototypeInstance == null)
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thePrototypeInstance = this;
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}
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public Environment(ScriptableObject scope) {
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setParentScope(scope);
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Object ctor = ScriptRuntime.getTopLevelProp(scope, "Environment");
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if (ctor != null && ctor instanceof Scriptable) {
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Scriptable s = (Scriptable) ctor;
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setPrototype((Scriptable) s.get("prototype", s));
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}
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}
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public boolean has(String name, Scriptable start) {
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if (this == thePrototypeInstance)
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return super.has(name, start);
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return (System.getProperty(name) != null);
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}
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public Object get(String name, Scriptable start) {
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if (this == thePrototypeInstance)
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return super.get(name, start);
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String result = System.getProperty(name);
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if (result != null)
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return ScriptRuntime.toObject(getParentScope(), result);
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else
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return Scriptable.NOT_FOUND;
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}
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public void put(String name, Scriptable start, Object value) {
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if (this == thePrototypeInstance)
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super.put(name, start, value);
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else
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System.getProperties().put(name, ScriptRuntime.toString(value));
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}
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private Object[] collectIds() {
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Properties props = System.getProperties();
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Enumeration names = props.propertyNames();
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Vector keys = new Vector();
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while (names.hasMoreElements())
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keys.addElement(names.nextElement());
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Object[] ids = new Object[keys.size()];
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keys.copyInto(ids);
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return ids;
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}
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public Object[] getIds() {
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if (this == thePrototypeInstance)
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return super.getIds();
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return collectIds();
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}
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public Object[] getAllIds() {
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if (this == thePrototypeInstance)
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return super.getAllIds();
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return collectIds();
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}
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}
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