[1573] | 1 | // OutputTarget.java |
---|
| 2 | // |
---|
| 3 | // (c) 1999-2001 PAL Development Core Team |
---|
| 4 | // |
---|
| 5 | // This package may be distributed under the |
---|
| 6 | // terms of the Lesser GNU General Public License (LGPL) |
---|
| 7 | |
---|
| 8 | |
---|
| 9 | package de.ugoe.cs.autoquest.tasktrees.alignment.pal.io; |
---|
| 10 | |
---|
| 11 | import java.io.BufferedWriter; |
---|
| 12 | import java.io.FileWriter; |
---|
| 13 | import java.io.IOException; |
---|
| 14 | import java.io.PrintWriter; |
---|
| 15 | import java.io.StringWriter; |
---|
| 16 | |
---|
| 17 | |
---|
| 18 | |
---|
| 19 | |
---|
| 20 | /** |
---|
| 21 | * convenience class to create output streams linked to |
---|
| 22 | * files, stdout, and strings |
---|
| 23 | * |
---|
| 24 | * @version $Id: OutputTarget.java,v 1.3 2001/07/13 14:39:13 korbinian Exp $ |
---|
| 25 | * |
---|
| 26 | * @author Korbinian Strimmer |
---|
| 27 | */ |
---|
| 28 | public class OutputTarget extends PrintWriter |
---|
| 29 | { |
---|
| 30 | // |
---|
| 31 | // Public stuff |
---|
| 32 | // |
---|
| 33 | |
---|
| 34 | /** |
---|
| 35 | * open file for writing |
---|
| 36 | * |
---|
| 37 | * @param name file name |
---|
| 38 | * |
---|
| 39 | * @return output stream |
---|
| 40 | */ |
---|
| 41 | public static OutputTarget openFile(String name) |
---|
| 42 | throws IOException |
---|
| 43 | { |
---|
| 44 | return new OutputTarget( |
---|
| 45 | new PrintWriter( |
---|
| 46 | new BufferedWriter( |
---|
| 47 | new FileWriter(name)))); |
---|
| 48 | } |
---|
| 49 | |
---|
| 50 | /** |
---|
| 51 | * open standard out |
---|
| 52 | * |
---|
| 53 | * @return output stream |
---|
| 54 | */ |
---|
| 55 | public static OutputTarget openStdOut() |
---|
| 56 | { |
---|
| 57 | return new OutputTarget(new PrintWriter(System.out)); |
---|
| 58 | } |
---|
| 59 | |
---|
| 60 | /** |
---|
| 61 | * "open" string to write into |
---|
| 62 | * |
---|
| 63 | * @return output stream |
---|
| 64 | */ |
---|
| 65 | public static OutputTarget openString() |
---|
| 66 | { |
---|
| 67 | StringWriter sw = new StringWriter(); |
---|
| 68 | |
---|
| 69 | return new OutputTarget(new PrintWriter(sw), sw); |
---|
| 70 | } |
---|
| 71 | |
---|
| 72 | /** |
---|
| 73 | * get string corresponding to current stream created by openString() |
---|
| 74 | * |
---|
| 75 | * @return string |
---|
| 76 | */ |
---|
| 77 | public String getString() |
---|
| 78 | { |
---|
| 79 | if (stringWriter == null) |
---|
| 80 | { |
---|
| 81 | return ""; |
---|
| 82 | } |
---|
| 83 | else |
---|
| 84 | { |
---|
| 85 | return stringWriter.toString(); |
---|
| 86 | } |
---|
| 87 | } |
---|
| 88 | |
---|
| 89 | |
---|
| 90 | // |
---|
| 91 | // Private stuff |
---|
| 92 | // |
---|
| 93 | |
---|
| 94 | private StringWriter stringWriter; |
---|
| 95 | |
---|
| 96 | // Private constructor |
---|
| 97 | private OutputTarget(PrintWriter out) |
---|
| 98 | { |
---|
| 99 | super(out); |
---|
| 100 | } |
---|
| 101 | |
---|
| 102 | private OutputTarget(PrintWriter out, StringWriter sw) |
---|
| 103 | { |
---|
| 104 | super(out); |
---|
| 105 | stringWriter = sw; |
---|
| 106 | } |
---|
| 107 | } |
---|