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 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 */ 31 32 // Find the file with maximum number of lines 33 34 var Files = Java.type("java.nio.file.Files"); 35 var Integer = Java.type("java.lang.Integer"); 36 var Paths = Java.type("java.nio.file.Paths"); 37 38 var file = arguments.length == 0? "." : arguments[0]; 39 var ext = arguments.length > 1? arguments[1] : ".java"; 40 var path = Paths.get(file); 41 42 // return number of lines in given Path (that represents a file) 43 function lines(p) { 44 var strm = Files.lines(p); 45 try { 46 return strm.count(); 47 } finally { 48 strm.close(); 49 } 50 } 51 52 // walk files, map to file and lines, find the max 53 var obj = Files.find(path, Integer.MAX_VALUE, 54 function(p, a) !p.toFile().isDirectory() && p.toString().endsWith(ext)). 55 map(function(p) ({ path : p, lines: lines(p) })). 56 max(function(x, y) x.lines - y.lines).get(); 57 58 // print path and lines of the max line file 59 print(obj.path, obj.lines);