1 /*

     2  * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved.

     3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

     4  *

     5  * This code is free software; you can redistribute it and/or modify it

     6  * under the terms of the GNU General Public License version 2 only, as

     7  * published by the Free Software Foundation.  Oracle designates this

     8  * particular file as subject to the "Classpath" exception as provided

     9  * by Oracle in the LICENSE file that accompanied this code.

    10  *

    11  * This code is distributed in the hope that it will be useful, but WITHOUT

    12  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

    13  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

    14  * version 2 for more details (a copy is included in the LICENSE file that

    15  * accompanied this code).

    16  *

    17  * You should have received a copy of the GNU General Public License version

    18  * 2 along with this work; if not, write to the Free Software Foundation,

    19  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

    20  *

    21  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

    22  * or visit www.oracle.com if you need additional information or have any

    23  * questions.

    24  */

    25 

    26 package com.sun.script.javascript;

    27 import javax.script.*;

    28 import java.util.*;

    29 import sun.org.mozilla.javascript.internal.*;

    30 import com.sun.script.util.*;

    31 

    32 /**

    33  * Factory to create RhinoScriptEngine

    34  *

    35  * @author Mike Grogan

    36  * @since 1.6

    37  */

    38 public class RhinoScriptEngineFactory extends ScriptEngineFactoryBase {

    39 

    40     public RhinoScriptEngineFactory() {

    41     }

    42 

    43     public List<String> getExtensions() {

    44         return extensions;

    45     }

    46 

    47     public List<String> getMimeTypes() {

    48         return mimeTypes;

    49     }

    50 

    51     public List<String> getNames() {

    52         return names;

    53     }

    54 

    55     public Object getParameter(String key) {

    56         if (key.equals(ScriptEngine.NAME)) {

    57             return "javascript";

    58         } else if (key.equals(ScriptEngine.ENGINE)) {

    59             return "Mozilla Rhino";

    60         } else if (key.equals(ScriptEngine.ENGINE_VERSION)) {

    61             return "1.7 release 3 PRERELEASE";

    62         } else if (key.equals(ScriptEngine.LANGUAGE)) {

    63             return "ECMAScript";

    64         } else if (key.equals(ScriptEngine.LANGUAGE_VERSION)) {

    65             return "1.8";

    66         } else if (key.equals("THREADING")) {

    67             return "MULTITHREADED";

    68         } else {

    69             throw new IllegalArgumentException("Invalid key");

    70         }

    71     }

    72 

    73     public ScriptEngine getScriptEngine() {

    74         RhinoScriptEngine ret = new RhinoScriptEngine();

    75         ret.setEngineFactory(this);

    76         return ret;

    77     }

    78 

    79     public String getMethodCallSyntax(String obj, String method, String... args) {

    80 

    81         String ret = obj + "." + method + "(";

    82         int len = args.length;

    83         if (len == 0) {

    84             ret += ")";

    85             return ret;

    86         }

    87 

    88         for (int i = 0; i < len; i++) {

    89             ret += args[i];

    90             if (i != len - 1) {

    91                 ret += ",";

    92             } else {

    93                 ret += ")";

    94             }

    95         }

    96         return ret;

    97     }

    98 

    99     public String getOutputStatement(String toDisplay) {

   100         StringBuffer buf = new StringBuffer();

   101         int len = toDisplay.length();

   102         buf.append("print(\"");

   103         for (int i = 0; i < len; i++) {

   104             char ch = toDisplay.charAt(i);

   105             switch (ch) {

   106             case '"':

   107                 buf.append("\\\"");

   108                 break;

   109             case '\\':

   110                 buf.append("\\\\");

   111                 break;

   112             default:

   113                 buf.append(ch);

   114                 break;

   115             }

   116         }

   117         buf.append("\")");

   118         return buf.toString();

   119     }

   120 

   121     public String getProgram(String... statements) {

   122         int len = statements.length;

   123         String ret = "";

   124         for (int i = 0; i < len; i++) {

   125             ret += statements[i] + ";";

   126         }

   127 

   128         return ret;

   129     }

   130 

   131     /*

   132     public static void main(String[] args) {

   133         RhinoScriptEngineFactory fact = new RhinoScriptEngineFactory();

   134         System.out.println(fact.getParameter(ScriptEngine.ENGINE_VERSION));

   135     }

   136     */

   137 

   138     private static List<String> names;

   139     private static List<String> mimeTypes;

   140     private static List<String> extensions;

   141 

   142     static {

   143         names = new ArrayList<String>(6);

   144         names.add("js");

   145         names.add("rhino");

   146         names.add("JavaScript");

   147         names.add("javascript");

   148         names.add("ECMAScript");

   149         names.add("ecmascript");

   150         names = Collections.unmodifiableList(names);

   151 

   152         mimeTypes = new ArrayList<String>(4);

   153         mimeTypes.add("application/javascript");

   154         mimeTypes.add("application/ecmascript");

   155         mimeTypes.add("text/javascript");

   156         mimeTypes.add("text/ecmascript");

   157         mimeTypes = Collections.unmodifiableList(mimeTypes);

   158 

   159         extensions = new ArrayList<String>(1);

   160         extensions.add("js");

   161         extensions = Collections.unmodifiableList(extensions);

   162     }

   163 }