| J. Duke | 319a3b9 | 2007-12-01 00:00:00 +0000 | [diff] [blame^] | 1 | /* |
| 2 | * Copyright 1997 Sun Microsystems, Inc. All Rights Reserved. |
| 3 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| 4 | * |
| 5 | * This code is free software; you can redistribute it and/or modify it |
| 6 | * under the terms of the GNU General Public License version 2 only, as |
| 7 | * published by the Free Software Foundation. |
| 8 | * |
| 9 | * This code is distributed in the hope that it will be useful, but WITHOUT |
| 10 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| 11 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| 12 | * version 2 for more details (a copy is included in the LICENSE file that |
| 13 | * accompanied this code). |
| 14 | * |
| 15 | * You should have received a copy of the GNU General Public License version |
| 16 | * 2 along with this work; if not, write to the Free Software Foundation, |
| 17 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| 18 | * |
| 19 | * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, |
| 20 | * CA 95054 USA or visit www.sun.com if you need additional information or |
| 21 | * have any questions. |
| 22 | */ |
| 23 | |
| 24 | /**/ |
| 25 | |
| 26 | |
| 27 | public class LineGenerator { |
| 28 | |
| 29 | IntGenerator ig; |
| 30 | StringGenerator sg; |
| 31 | int limit; |
| 32 | |
| 33 | public LineGenerator(IntGenerator ig, StringGenerator sg, int limit) { |
| 34 | this.ig = ig; |
| 35 | this.sg = sg; |
| 36 | this.limit = limit; |
| 37 | } |
| 38 | |
| 39 | public LineGenerator(IntGenerator ig) { |
| 40 | this.ig = ig; |
| 41 | this.sg = new StringGenerator(ig); |
| 42 | this.limit = -1; |
| 43 | } |
| 44 | |
| 45 | private char prevTerminator = 0; |
| 46 | private int count = 0; |
| 47 | public String lineTerminator; |
| 48 | |
| 49 | public String next() { |
| 50 | if ((count >= limit) && (limit >= 0)) |
| 51 | return null; |
| 52 | |
| 53 | String l = sg.next(); |
| 54 | |
| 55 | /* Avoid "\r\n" sequences |
| 56 | in which the '\n' terminates a blank line */ |
| 57 | int len = l.length(); |
| 58 | int t; |
| 59 | do |
| 60 | t = ig.next(2); |
| 61 | while ((prevTerminator == '\r') && (len == 0) && (t == 0)); |
| 62 | |
| 63 | String ts; |
| 64 | switch (t) { |
| 65 | case 0: |
| 66 | ts = "\n"; |
| 67 | prevTerminator = '\n'; |
| 68 | break; |
| 69 | case 1: |
| 70 | ts = "\r"; |
| 71 | prevTerminator = '\r'; |
| 72 | break; |
| 73 | case 2: |
| 74 | default: |
| 75 | ts = "\r\n"; |
| 76 | prevTerminator = '\n'; |
| 77 | break; |
| 78 | } |
| 79 | |
| 80 | count++; |
| 81 | lineTerminator = ts; |
| 82 | return l; |
| 83 | } |
| 84 | } |