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);