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1
5 package org.h2.value;
6
7 import java.text.Collator  ;
8 import java.util.Locale ;
9
10 import org.h2.util.StringUtils;
11
12 public class CompareMode {
13 public static final String OFF = "OFF";
14 private String name = OFF;
15 private Collator collator;
16
17 public CompareMode(Collator collator, String name) {
18 this.collator = collator;
19 if(name != null) {
20 this.name = name;
21 }
22 }
23
24 public int compareString(String a, String b, boolean ignoreCase) {
25 if(collator == null) {
26 if(ignoreCase) {
27 return a.compareToIgnoreCase(b);
28 }
29 return a.compareTo(b);
30 }
31 if(ignoreCase) {
32 a = a.toUpperCase();
34 b = b.toUpperCase();
35 }
36 int comp = collator.compare(a, b);
37 return comp;
38 }
39
40 public static String getName(Locale l) {
41 Locale english = Locale.ENGLISH;
42 String name = l.getDisplayLanguage(english) + ' ' + l.getDisplayCountry(english) + ' ' + l.getVariant();
43 name = StringUtils.toUpperEnglish(name.trim().replace(' ', '_'));
44 return name;
45 }
46
47 private static boolean compareLocaleNames(Locale locale, String name) {
48 return name.equalsIgnoreCase(locale.toString()) || name.equalsIgnoreCase(getName(locale));
49 }
50
51 public static Collator getCollator(String name) {
52 Collator result = null;
53 if(name.length() == 2) {
54 Locale locale = new Locale (name.toLowerCase());
55 if(compareLocaleNames(locale, name)) {
56 result = Collator.getInstance(locale);
57 }
58 } else if(name.length() == 5) {
59 int idx = name.indexOf('_');
60 if(idx >= 0) {
61 String language = name.substring(0, idx).toLowerCase();
62 String country = name.substring(idx + 1);
63 Locale locale = new Locale (language, country);
64 if(compareLocaleNames(locale, name)) {
65 result = Collator.getInstance(locale);
66 }
67 }
68 }
69 if(result == null) {
70 Locale [] locales = Collator.getAvailableLocales();
71 for(int i=0; i<locales.length; i++) {
72 Locale locale = locales[i];
73 if(compareLocaleNames(locale, name)) {
74 result = Collator.getInstance(locale);
75 break;
76 }
77 }
78 }
79 return result;
80 }
81
82 public String getName() {
83 return name;
84 }
85
86 }
87 |
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