jdk8-mips64-public/nashorn: samples/shell.js@2f1b9f4daec1

8080087: Nashorn $ENV.PWD is originally undefined
Summary: On Windows, the PWD environment variable does not exist and cannot be imported in scripting mode, so it is set explicitly.
Reviewed-by: lagergren, sundar

     1 /*

     2  * Copyright (c) 2014, Oracle and/or its affiliates. All rights reserved.

     3  *

     4  * Redistribution and use in source and binary forms, with or without

     5  * modification, are permitted provided that the following conditions

     6  * are met:

     7  *

     8  *   - Redistributions of source code must retain the above copyright

     9  *     notice, this list of conditions and the following disclaimer.

    10  *

    11  *   - Redistributions in binary form must reproduce the above copyright

    12  *     notice, this list of conditions and the following disclaimer in the

    13  *     documentation and/or other materials provided with the distribution.

    14  *

    15  *   - Neither the name of Oracle nor the names of its

    16  *     contributors may be used to endorse or promote products derived

    17  *     from this software without specific prior written permission.

    18  *

    19  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS

    20  * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,

    21  * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR

    22  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR

    23  * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,

    24  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,

    25  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR

    26  * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF

    27  * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING

    28  * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS

    29  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

    30  */

    32 // Usage: jjs shell.js

    34 /* This is a simple shell tool in JavaScript.

    35  *

    36  * Runs any operating system command using Java "exec". When "eval" command is

    37  * used, evaluates argument(s) as JavaScript code.

    38  */

    40 (function() {

    41     // Java classes used

    42     var Arrays = Java.type("java.util.Arrays");

    43     var BufferedReader = Java.type("java.io.BufferedReader");

    44     var InputStreamReader = Java.type("java.io.InputStreamReader");

    45     var ProcessBuilder = Java.type("java.lang.ProcessBuilder");

    46     var System = Java.type("java.lang.System");

    48     // print prompt

    49     function prompt() {

    50         System.out.print("> ");

    51     }

    53     var reader = new BufferedReader(new InputStreamReader(System.in));

    54     prompt();

    55     // read and evaluate each line from stdin

    56     reader.lines().forEach(function(line) {

    57         if (! line.isEmpty()) {

    58             var args = line.split(' ');

    59             try {

    60                 // special 'eval' command to evaluate JS code

    61                 if (args[0] == 'eval') {

    62                     var code = line.substring('eval'.length);

    63                     var res = eval(code);

    64                     if (res != undefined) {

    65                         print(res);

    66                     }

    67                 } else {

    68                     // build child process and start it!

    69                     new ProcessBuilder(Arrays.asList(args))

    70                         .inheritIO()

    71                         .start()

    72                         .waitFor();

    73                 }

    74             } catch (e) {

    75                 // print exception, if any

    76                 print(e);

    77             }

    78         }

    79         prompt();

    80     })

    81 })()

Mercurial > jdk8-mips64-public > nashorn / file revision

samples/shell.js@2f1b9f4daec1

samples/shell.js