samples/shell.js

changeset 3
da1e581c933b
child 7
5a1b0714df0e
     1.1 --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
     1.2 +++ b/samples/shell.js	Fri Dec 21 16:36:24 2012 -0400
     1.3 @@ -0,0 +1,78 @@
     1.4 +/*
     1.5 + * Copyright (c) 2010, 2012, Oracle and/or its affiliates. All rights reserved.
     1.6 + * 
     1.7 + * Redistribution and use in source and binary forms, with or without
     1.8 + * modification, are permitted provided that the following conditions
     1.9 + * are met:
    1.10 + * 
    1.11 + *   - Redistributions of source code must retain the above copyright
    1.12 + *     notice, this list of conditions and the following disclaimer.
    1.13 + * 
    1.14 + *   - Redistributions in binary form must reproduce the above copyright
    1.15 + *     notice, this list of conditions and the following disclaimer in the
    1.16 + *     documentation and/or other materials provided with the distribution.
    1.17 + * 
    1.18 + *   - Neither the name of Oracle nor the names of its
    1.19 + *     contributors may be used to endorse or promote products derived
    1.20 + *     from this software without specific prior written permission.
    1.21 + * 
    1.22 + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
    1.23 + * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
    1.24 + * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
    1.25 + * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR
    1.26 + * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
    1.27 + * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
    1.28 + * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
    1.29 + * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
    1.30 + * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
    1.31 + * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
    1.32 + * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
    1.33 + */
    1.34 +
    1.35 +/**
    1.36 + * This is a simple shell tool in JavaScript.
    1.37 + *
    1.38 + * Runs any operating system command using Java "exec". When "eval" command is
    1.39 + * used, evaluates argument(s) as JavaScript code.
    1.40 + */
    1.41 +
    1.42 +var imports = new JavaImporter(java.io, java.lang, java.util);
    1.43 +
    1.44 +function prompt() {
    1.45 +    java.lang.System.out.print(">");
    1.46 +}
    1.47 +
    1.48 +with (imports) {
    1.49 +    var reader = new BufferedReader(new InputStreamReader(System["in"]));
    1.50 +    var line = null;
    1.51 +    prompt();
    1.52 +    while ((line = reader.readLine()) != null) {
    1.53 +        if (line != "") {
    1.54 +            var args = line.split(" ");
    1.55 +            try {
    1.56 +                if (args[0] == "eval") {
    1.57 +                    var code = line.substring("eval".length);
    1.58 +                    var res = eval(code);
    1.59 +                    if (res != undefined) {
    1.60 +                        print(res);
    1.61 +                    }
    1.62 +                } else {
    1.63 +                    var argList = new ArrayList();
    1.64 +                    for (i in args) { argList.add(args[i]); }                
    1.65 +                    var procBuilder = new ProcessBuilder(argList);
    1.66 +                    procBuilder.redirectErrorStream();
    1.67 +                    var proc = procBuilder.start();
    1.68 +                    var out = new BufferedReader(new InputStreamReader(proc.getInputStream()));
    1.69 +                    var line = null;
    1.70 +                    while ((line = out.readLine()) != null) {
    1.71 +                        System.out.println(line);
    1.72 +                    }
    1.73 +                    proc.waitFor();
    1.74 +                }
    1.75 +            } catch (e) {
    1.76 +                print(e);
    1.77 +            }
    1.78 +        }
    1.79 +        prompt();
    1.80 +    }
    1.81 +}

mercurial