rt/emul/compact/src/main/java/java/lang/System.java
author Jaroslav Tulach <jaroslav.tulach@apidesign.org>
Mon, 30 Sep 2013 17:11:18 +0200
branchjavac
changeset 1328 1d1d70f6828b
parent 1322 1bf52dbf783e
child 1361 1b333e5804f5
permissions -rw-r--r--
Make sure os.name property is defined
     1 /**
     2  * Back 2 Browser Bytecode Translator
     3  * Copyright (C) 2012 Jaroslav Tulach <jaroslav.tulach@apidesign.org>
     4  *
     5  * This program is free software: you can redistribute it and/or modify
     6  * it under the terms of the GNU General Public License as published by
     7  * the Free Software Foundation, version 2 of the License.
     8  *
     9  * This program is distributed in the hope that it will be useful,
    10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
    11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    12  * GNU General Public License for more details.
    13  *
    14  * You should have received a copy of the GNU General Public License
    15  * along with this program. Look for COPYING file in the top folder.
    16  * If not, see http://opensource.org/licenses/GPL-2.0.
    17  */
    18 package java.lang;
    19 
    20 import java.io.ByteArrayInputStream;
    21 import java.io.ByteArrayOutputStream;
    22 import java.io.InputStream;
    23 import java.io.PrintStream;
    24 import org.apidesign.bck2brwsr.core.JavaScriptBody;
    25 
    26 /** Poor man's re-implementation of most important System methods.
    27  *
    28  * @author Jaroslav Tulach <jtulach@netbeans.org>
    29  */
    30 public class System {
    31     private System() {
    32     }
    33     
    34     public static void arraycopy(Object value, int srcBegin, Object dst, int dstBegin, int count) {
    35         org.apidesign.bck2brwsr.emul.lang.System.arraycopy(value, srcBegin, dst, dstBegin, count);
    36     }
    37     
    38     public static long currentTimeMillis() {
    39         return org.apidesign.bck2brwsr.emul.lang.System.currentTimeMillis();
    40     }
    41     
    42     public static int identityHashCode(Object obj) {
    43         return obj.defaultHashCode();
    44     }
    45 
    46     public static String getProperty(String name) {
    47         if ("os.name".equals(name)) {
    48             return userAgent();
    49         }
    50         return null;
    51     }
    52     
    53     @JavaScriptBody(args = {}, body = "return navigator.userAgent;")
    54     private static native String userAgent();
    55     
    56     public static String getProperty(String key, String def) {
    57         return def;
    58     }
    59     
    60     /**
    61      * Returns the system-dependent line separator string.  It always
    62      * returns the same value - the initial value of the {@linkplain
    63      * #getProperty(String) system property} {@code line.separator}.
    64      *
    65      * <p>On UNIX systems, it returns {@code "\n"}; on Microsoft
    66      * Windows systems it returns {@code "\r\n"}.
    67      */
    68     public static String lineSeparator() {
    69         return "\n";
    70     }
    71 
    72     @JavaScriptBody(args = { "exitCode" }, body = "window.close();")
    73     public static void exit(int exitCode) {
    74     }
    75     
    76     public final static InputStream in;
    77 
    78     public final static PrintStream out;
    79 
    80     public final static PrintStream err;
    81     
    82     static {
    83         in = new ByteArrayInputStream(new byte[0]);
    84         out = err = new PrintStream(new ByteArrayOutputStream());
    85     }
    86     
    87 }