Thu, 31 Aug 2017 15:30:47 +0800
merge
aoqi@0 | 1 | /* |
aoqi@0 | 2 | * Copyright (c) 2014, Oracle and/or its affiliates. All rights reserved. |
aoqi@0 | 3 | * |
aoqi@0 | 4 | * Redistribution and use in source and binary forms, with or without |
aoqi@0 | 5 | * modification, are permitted provided that the following conditions |
aoqi@0 | 6 | * are met: |
aoqi@0 | 7 | * |
aoqi@0 | 8 | * - Redistributions of source code must retain the above copyright |
aoqi@0 | 9 | * notice, this list of conditions and the following disclaimer. |
aoqi@0 | 10 | * |
aoqi@0 | 11 | * - Redistributions in binary form must reproduce the above copyright |
aoqi@0 | 12 | * notice, this list of conditions and the following disclaimer in the |
aoqi@0 | 13 | * documentation and/or other materials provided with the distribution. |
aoqi@0 | 14 | * |
aoqi@0 | 15 | * - Neither the name of Oracle nor the names of its |
aoqi@0 | 16 | * contributors may be used to endorse or promote products derived |
aoqi@0 | 17 | * from this software without specific prior written permission. |
aoqi@0 | 18 | * |
aoqi@0 | 19 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS |
aoqi@0 | 20 | * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, |
aoqi@0 | 21 | * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
aoqi@0 | 22 | * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR |
aoqi@0 | 23 | * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, |
aoqi@0 | 24 | * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, |
aoqi@0 | 25 | * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR |
aoqi@0 | 26 | * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF |
aoqi@0 | 27 | * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING |
aoqi@0 | 28 | * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS |
aoqi@0 | 29 | * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
aoqi@0 | 30 | */ |
aoqi@0 | 31 | |
aoqi@0 | 32 | // Usage: jjs uniq.js |
aoqi@0 | 33 | // or: jjs uniq.js -- <file> |
aoqi@0 | 34 | |
aoqi@0 | 35 | // omit repeated lines and print unique lines |
aoqi@0 | 36 | |
aoqi@0 | 37 | var BufferedReader = Java.type("java.io.BufferedReader"); |
aoqi@0 | 38 | var FileReader = Java.type("java.io.FileReader"); |
aoqi@0 | 39 | var InputStreamReader = Java.type("java.io.InputStreamReader"); |
aoqi@0 | 40 | var System = Java.type("java.lang.System"); |
aoqi@0 | 41 | |
aoqi@0 | 42 | // use object as set - but insertion order preserved |
aoqi@0 | 43 | var uniqueLines = {}; |
aoqi@0 | 44 | var reader = arguments.length > 0 ? |
aoqi@0 | 45 | new FileReader(arguments[0]) : |
aoqi@0 | 46 | new InputStreamReader(System.in); |
aoqi@0 | 47 | reader = new BufferedReader(reader); |
aoqi@0 | 48 | |
aoqi@0 | 49 | // add unique lines |
aoqi@0 | 50 | reader.lines().forEach(function(line) { |
aoqi@0 | 51 | uniqueLines[line] = true; |
aoqi@0 | 52 | }) |
aoqi@0 | 53 | |
aoqi@0 | 54 | for (line in uniqueLines) { |
aoqi@0 | 55 | print(line); |
aoqi@0 | 56 | } |