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1 package org.apache.slide.projector.processor.resolver;
2
3 import java.util.ArrayList  ;
4 import java.util.Collections ;
5 import java.util.List ;
6 import java.util.Locale ;
7 import java.util.StringTokenizer ;
8
9 import org.apache.slide.projector.Context;
10 import org.apache.slide.projector.descriptor.ParameterDescriptor;
11 import org.apache.slide.projector.descriptor.ResultEntryDescriptor;
12 import org.apache.slide.projector.descriptor.StringValueDescriptor;
13 import org.apache.slide.projector.i18n.DefaultMessage;
14 import org.apache.slide.projector.i18n.ParameterMessage;
15 import org.apache.slide.projector.processor.SimpleProcessor;
16 import org.apache.slide.projector.value.LocaleValue;
17 import org.apache.slide.projector.value.StringValue;
18 import org.apache.slide.projector.value.Value;
19
20
23 public class LocaleResolver extends SimpleProcessor {
24 private final static ParameterDescriptor parameterDescriptor = new ParameterDescriptor(INPUT, new ParameterMessage("localeResolver/locale"), new StringValueDescriptor(), new StringValue(Locale.getDefault().toString()));
25 private final static ResultEntryDescriptor resultEntryDescriptor = new ResultEntryDescriptor(SimpleProcessor.OUTPUT, new DefaultMessage("locale/result/output"), LocaleValue.CONTENT_TYPE, false);
26
27 public Value process(Value input, Context context) throws Exception {
28 List acceptedLanguages = new ArrayList ();
29 StringTokenizer tokenizer = new StringTokenizer (input.toString(), ",");
30 while ( tokenizer.hasMoreTokens() ) {
31 String localeToken = tokenizer.nextToken();
32 double q = 1.0;
33 int qIndex = localeToken.indexOf(";q=");
34 if ( qIndex > 0 ) {
35 q = Double.parseDouble(localeToken.substring(qIndex+3));
36 localeToken = localeToken.substring(0, qIndex);
37 }
38 acceptedLanguages.add(new AcceptedLanguage(q, new Locale (localeToken)));
40 }
41 Collections.sort(acceptedLanguages);
42 return new LocaleValue(((AcceptedLanguage)acceptedLanguages.get(0)).getLocale());
43 }
44
45 public ParameterDescriptor getParameterDescriptor() {
46 return parameterDescriptor;
47 }
48
49 public ResultEntryDescriptor getResultEntryDescriptor() {
50 return resultEntryDescriptor;
51 }
52
53 class AcceptedLanguage implements Comparable {
54 double q;
55 Locale locale;
56
57 public AcceptedLanguage(double q, Locale locale) {
58 this.q = q;
59 this.locale = locale;
60 }
61
62 public Locale getLocale() {
63 return locale;
64 }
65
66 public double getQ() {
67 return q;
68 }
69
70 public int compareTo(Object a) {
71 if ( ((AcceptedLanguage)a).getQ() < q ) return -1;
72 if ( ((AcceptedLanguage)a).getQ() > q ) return 1;
73 return 0;
74 }
75 }
76 } |
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