1 /*
2 * Copyright (c) 2003, 2014, 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 4217441 4533872 4900935 8020037 8032012 8041791 8042589 8054307
27 @summary toLowerCase should lower-case Greek Sigma correctly depending
28 on the context (final/non-final). Also it should handle
29 Locale specific (lt, tr, and az) lowercasings and supplementary
30 characters correctly.
31 */
32
33 import java.util.Locale;
34
35 public class ToLowerCase {
36
37 public static void main(String[] args) {
38 Locale turkish = new Locale("tr", "TR");
39 Locale lt = new Locale("lt"); // Lithanian
40 Locale az = new Locale("az"); // Azeri
41
42 // Greek Sigma final/non-final tests
43 test("\u03A3", Locale.US, "\u03C3");
44 test("LAST\u03A3", Locale.US, "last\u03C2");
45 test("MID\u03A3DLE", Locale.US, "mid\u03C3dle");
46 test("WORD1 \u03A3 WORD3", Locale.US, "word1 \u03C3 word3");
47 test("WORD1 LAST\u03A3 WORD3", Locale.US, "word1 last\u03C2 word3");
48 test("WORD1 MID\u03A3DLE WORD3", Locale.US, "word1 mid\u03C3dle word3");
49 test("\u0399\u0395\u03a3\u03a5\u03a3 \u03a7\u03a1\u0399\u03a3\u03a4\u039f\u03a3", Locale.US,
50 "\u03b9\u03b5\u03c3\u03c5\u03c2 \u03c7\u03c1\u03b9\u03c3\u03c4\u03bf\u03c2"); // "IESUS XRISTOS"
51
52 // Explicit dot above for I's and J's whenever there are more accents above (Lithanian)
53 test("I", lt, "i");
54 test("I\u0300", lt, "i\u0307\u0300"); // "I" followed by COMBINING GRAVE ACCENT (cc==230)
55 test("I\u0316", lt, "i\u0316"); // "I" followed by COMBINING GRAVE ACCENT BELOW (cc!=230)
56 test("J", lt, "j");
57 test("J\u0300", lt, "j\u0307\u0300"); // "J" followed by COMBINING GRAVE ACCENT (cc==230)
58 test("J\u0316", lt, "j\u0316"); // "J" followed by COMBINING GRAVE ACCENT BELOW (cc!=230)
59 test("\u012E", lt, "\u012F");
60 test("\u012E\u0300", lt, "\u012F\u0307\u0300"); // "I (w/ OGONEK)" followed by COMBINING GRAVE ACCENT (cc==230)
61 test("\u012E\u0316", lt, "\u012F\u0316"); // "I (w/ OGONEK)" followed by COMBINING GRAVE ACCENT BELOW (cc!=230)
62 test("\u00CC", lt, "i\u0307\u0300");
63 test("\u00CD", lt, "i\u0307\u0301");
64 test("\u0128", lt, "i\u0307\u0303");
65 test("I\u0300", Locale.US, "i\u0300"); // "I" followed by COMBINING GRAVE ACCENT (cc==230)
66 test("J\u0300", Locale.US, "j\u0300"); // "J" followed by COMBINING GRAVE ACCENT (cc==230)
67 test("\u012E\u0300", Locale.US, "\u012F\u0300"); // "I (w/ OGONEK)" followed by COMBINING GRAVE ACCENT (cc==230)
68 test("\u00CC", Locale.US, "\u00EC");
69 test("\u00CD", Locale.US, "\u00ED");
70 test("\u0128", Locale.US, "\u0129");
71
72 // I-dot tests
73 test("\u0130", turkish, "i");
74 test("\u0130", az, "i");
75 test("\u0130", lt, "\u0069\u0307");
76 test("\u0130", Locale.US, "\u0069\u0307");
77 test("\u0130", Locale.JAPAN, "\u0069\u0307");
78 test("\u0130", Locale.ROOT, "\u0069\u0307");
79
80 // Remove dot_above in the sequence I + dot_above (Turkish and Azeri)
81 test("I\u0307", turkish, "i");
82 test("I\u0307", az, "i");
83 test("J\u0307", turkish, "j\u0307");
84 test("J\u0307", az, "j\u0307");
85
86 // Unless an I is before a dot_above, it turns into a dotless i (Turkish and Azeri)
87 test("I", turkish, "\u0131");
88 test("I", az, "\u0131");
89 test("I", Locale.US, "i");
90 test("IABC", turkish, "\u0131abc");
91 test("IABC", az, "\u0131abc");
92 test("IABC", Locale.US, "iabc");
93
94 // Supplementary character tests
95 //
96 // U+10400 ("\uD801\uDC00"): DESERET CAPITAL LETTER LONG I
97 // U+10401 ("\uD801\uDC01"): DESERET CAPITAL LETTER LONG E
98 // U+10402 ("\uD801\uDC02"): DESERET CAPITAL LETTER LONG A
99 // U+10428 ("\uD801\uDC28"): DESERET SMALL LETTER LONG I
100 // U+10429 ("\uD801\uDC29"): DESERET SMALL LETTER LONG E
101 // U+1042A ("\uD801\uDC2A"): DESERET SMALL LETTER LONG A
102 //
103 // valid code point tests:
104 test("\uD801\uDC00\uD801\uDC01\uD801\uDC02", Locale.US, "\uD801\uDC28\uD801\uDC29\uD801\uDC2A");
105 test("\uD801\uDC00A\uD801\uDC01B\uD801\uDC02C", Locale.US, "\uD801\uDC28a\uD801\uDC29b\uD801\uDC2Ac");
106 // invalid code point tests:
107 test("\uD800\uD800\uD801A\uDC00\uDC00\uDC00B", Locale.US, "\uD800\uD800\uD801a\uDC00\uDC00\uDC00b");
108
109 // lower/uppercase + surrogates
110 test("a\uD801\uDC1c", Locale.ROOT, "a\uD801\uDC44");
111 test("A\uD801\uDC1c", Locale.ROOT, "a\uD801\uDC44");
112 test("a\uD801\uDC00\uD801\uDC01\uD801\uDC02", Locale.US, "a\uD801\uDC28\uD801\uDC29\uD801\uDC2A");
113 test("A\uD801\uDC00\uD801\uDC01\uD801\uDC02", Locale.US, "a\uD801\uDC28\uD801\uDC29\uD801\uDC2A");
114
115 // test bmp + supp1
116 StringBuilder src = new StringBuilder(0x20000);
117 StringBuilder exp = new StringBuilder(0x20000);
118 for (int cp = 0; cp < 0x20000; cp++) {
119 if (cp >= Character.MIN_HIGH_SURROGATE && cp <= Character.MAX_HIGH_SURROGATE) {
120 continue;
121 }
122 if (cp == 0x0130) {
123 // Although UnicodeData.txt has the lower case char as \u0069, it should be
124 // handled with the rules in SpecialCasing.txt, i.e., \u0069\u0307 in
125 // non Turkic locales.
126 continue;
127 }
128 int lowerCase = Character.toLowerCase(cp);
129 if (lowerCase == -1) { //Character.ERROR
130 continue;
131 }
132 src.appendCodePoint(cp);
133 exp.appendCodePoint(lowerCase);
134 }
135 test(src.toString(), Locale.US, exp.toString());
136
137 // test latin1
138 src = new StringBuilder(0x100);
139 exp = new StringBuilder(0x100);
140 for (int cp = 0; cp < 0x100; cp++) {
141 int lowerCase = Character.toLowerCase(cp);
142 if (lowerCase == -1) { //Character.ERROR
143 continue;
144 }
145 src.appendCodePoint(cp);
146 exp.appendCodePoint(lowerCase);
147 }
148 test(src.toString(), Locale.US, exp.toString());
149
150 // test non-latin1 -> latin1
151 src = new StringBuilder(0x100).append("abc");
152 exp = new StringBuilder(0x100).append("abc");
153 for (int cp = 0x100; cp < 0x10000; cp++) {
154 int lowerCase = Character.toLowerCase(cp);
155 if (lowerCase < 0x100 && cp != '\u0130') {
156 src.appendCodePoint(cp);
157 exp.appendCodePoint(lowerCase);
158 }
159 }
160 test(src.toString(), Locale.US, exp.toString());
161 }
162
163 static void test(String in, Locale locale, String expected) {
164 test0(in, locale,expected);
165 for (String[] ss : new String[][] {
166 new String[] {"abc", "abc"},
167 new String[] {"aBc", "abc"},
168 new String[] {"ABC", "abc"},
169 new String[] {"ab\u4e00", "ab\u4e00"},
170 new String[] {"aB\u4e00", "ab\u4e00"},
171 new String[] {"AB\u4e00", "ab\u4e00"},
172 new String[] {"ab\uD800\uDC00", "ab\uD800\uDC00"},
173 new String[] {"aB\uD800\uDC00", "ab\uD800\uDC00"},
174 new String[] {"AB\uD800\uDC00", "ab\uD800\uDC00"},
175 new String[] {"ab\uD801\uDC1C", "ab\uD801\uDC44"},
176 new String[] {"aB\uD801\uDC1C", "ab\uD801\uDC44"},
177 new String[] {"AB\uD801\uDC1C", "ab\uD801\uDC44"},
178
179 }) {
180 test0(ss[0] + " " + in, locale, ss[1] + " " + expected);
181 test0(in + " " + ss[0], locale, expected + " " + ss[1]);
182 }
183 }
184
185 static void test0(String in, Locale locale, String expected) {
186 String result = in.toLowerCase(locale);
187 if (!result.equals(expected)) {
188 System.err.println("input: " + in + ", locale: " + locale +
189 ", expected: " + expected + ", actual: " + result);
190 throw new RuntimeException();
191 }
192 }
193 }