1/* 2 * Copyright (c) 2004, Oracle and/or its affiliates. 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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 */ 23 24/* 25 * @test 26 * @bug 4965770 4992540 5030716 27 */ 28 29import java.nio.CharBuffer; 30import java.util.Formatter; 31import java.util.Formattable; 32import java.util.Locale; 33import static java.util.FormattableFlags.*; 34 35public class StockName implements Formattable { 36 private String symbol, companyName, frenchCompanyName; 37 38 public StockName(String symbol, String companyName, 39 String frenchCompanyName) 40 { 41 this.symbol = symbol; 42 this.companyName = companyName; 43 this.frenchCompanyName = frenchCompanyName; 44 } 45 46 public void formatTo(Formatter fmt, int f, int width, int precision) { 47 StringBuilder sb = new StringBuilder(); 48 49 // decide form of name 50 String name = companyName; 51 if (fmt.locale().equals(Locale.FRANCE)) 52 name = frenchCompanyName; 53 boolean alternate = (f & ALTERNATE) == ALTERNATE; 54 boolean usesymbol = alternate || (precision != -1 && precision < 10); 55 String out = (usesymbol ? symbol : name); 56 57 // apply precision 58 if (precision == -1 || out.length() < precision) { 59 // write it all 60 sb.append(out); 61 } else { 62 sb.append(out.substring(0, precision - 1)).append('*'); 63 } 64 65 // apply width and justification 66 int len = sb.length(); 67 if (len < width) 68 for (int i = 0; i < width - len; i++) 69 if ((f & LEFT_JUSTIFY) == LEFT_JUSTIFY) 70 sb.append(' '); 71 else 72 sb.insert(0, ' '); 73 74 fmt.format(sb.toString()); 75 } 76 77 public String toString() { 78 return String.format("%s - %s", symbol, companyName); 79 } 80 81 public static void main(String [] args) { 82 StockName sn = new StockName("HUGE", "Huge Fruit, Inc.", 83 "Fruit Titanesque, Inc."); 84 CharBuffer cb = CharBuffer.allocate(128); 85 Formatter fmt = new Formatter(cb); 86 87 fmt.format("%s", sn); // -> "Huge Fruit, Inc." 88 test(cb, "Huge Fruit, Inc."); 89 90 fmt.format("%s", sn.toString()); // -> "HUGE - Huge Fruit, Inc." 91 test(cb, "HUGE - Huge Fruit, Inc."); 92 93 fmt.format("%#s", sn); // -> "HUGE" 94 test(cb, "HUGE"); 95 96 fmt.format("%-10.8s", sn); // -> "HUGE " 97 test(cb, "HUGE "); 98 99 fmt.format("%.12s", sn); // -> "Huge Fruit,*" 100 test(cb, "Huge Fruit,*"); 101 102 fmt.format(Locale.FRANCE, "%25s", sn); 103 // -> " Fruit Titanesque, Inc." 104 test(cb, " Fruit Titanesque, Inc."); 105 } 106 107 private static void test(CharBuffer cb, String exp) { 108 cb.limit(cb.position()); 109 cb.rewind(); 110 if (!cb.toString().equals(exp)) 111 throw new RuntimeException("expect: '" + exp + "'; got: '" 112 + cb.toString() + "'"); 113 cb.clear(); 114 } 115} 116