jdk8-mips64-public/nashorn: samples/find_max_lines.js@d0fba38a0705 (annotated)

samples/find_max_lines.js@d0fba38a0705 (annotated)

samples/find_max_lines.js

Tue, 22 Mar 2016 21:31:52 -0700

author: asaha
date: Tue, 22 Mar 2016 21:31:52 -0700
changeset 1810: d0fba38a0705
parent 1524: 3f4320a01539
permissions: -rw-r--r--

Added tag jdk8u92-b13 for changeset e2294411edbd

 /*
  * Copyright (c) 2015, Oracle and/or its affiliates. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  *
  *   - Redistributions of source code must retain the above copyright
  *     notice, this list of conditions and the following disclaimer.
  *
  *   - Redistributions in binary form must reproduce the above copyright
  *     notice, this list of conditions and the following disclaimer in the
  *     documentation and/or other materials provided with the distribution.
  *
  *   - Neither the name of Oracle nor the names of its
  *     contributors may be used to endorse or promote products derived
  *     from this software without specific prior written permission.
  *
  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
  * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
  * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR
  * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
  * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
  * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
  * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 // Find the file with maximum number of lines
 var Files = Java.type("java.nio.file.Files");
 var Integer = Java.type("java.lang.Integer");
 var Paths = Java.type("java.nio.file.Paths");
 var file = arguments.length == 0? "." : arguments[0];
 var ext = arguments.length > 1? arguments[1] : ".java";
 var path = Paths.get(file);
 // return number of lines in given Path (that represents a file)
 function lines(p) {
     var strm = Files.lines(p);
     try {
         return strm.count();
     } finally {
         strm.close();
     }
 }
 // walk files, map to file and lines, find the max
 var obj = Files.find(path, Integer.MAX_VALUE,
     function(p, a) !p.toFile().isDirectory() && p.toString().endsWith(ext)).
 map(function(p) ({ path : p, lines: lines(p) })).
 max(function(x, y) x.lines - y.lines).get();
 // print path and lines of the max line file
 print(obj.path, obj.lines);