print_symlinks.js revision 1412:bfe6bd5d57bf 
1/*
2 * Copyright (c) 2015, 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
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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
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29 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
30 */
31
32// Print all symbolic links in user's home directory
33
34// JavaImporter and "with" to simulate "import" statements in Java.
35// See https://wiki.openjdk.java.net/display/Nashorn/Nashorn+extensions
36
37with (new JavaImporter(java.nio.file, java.lang)) {
38
39  var userDir = System.getProperty("user.dir")
40  var home = FileSystems.default.getPath(userDir);
41
42  // JS functions can be passed where Java lambdas are required.
43  // Also, using "Expression closure" extension here.
44  // See https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Operators/Expression_Closures
45
46  Files.walk(home).
47    filter(function(p) Files.isSymbolicLink(p)).
48    forEach(function(p)
49      print(p, '->', Files.readSymbolicLink(p)));
50}
51